How to use scroll method in taiko

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node-scroll-info-coverage.js

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1/*2YUI 3.7.3 (build 5687)3Copyright 2012 Yahoo! Inc. All rights reserved.4Licensed under the BSD License.5http://yuilibrary.com/license/6*/7if (typeof _yuitest_coverage == "undefined"){8 _yuitest_coverage = {};9 _yuitest_coverline = function(src, line){10 var coverage = _yuitest_coverage[src];11 if (!coverage.lines[line]){12 coverage.calledLines++;13 }14 coverage.lines[line]++;15 };16 _yuitest_coverfunc = function(src, name, line){17 var coverage = _yuitest_coverage[src],18 funcId = name + ":" + line;19 if (!coverage.functions[funcId]){20 coverage.calledFunctions++;21 }22 coverage.functions[funcId]++;23 };24}25_yuitest_coverage["build/node-scroll-info/node-scroll-info.js"] = {26 lines: {},27 functions: {},28 coveredLines: 0,29 calledLines: 0,30 coveredFunctions: 0,31 calledFunctions: 0,32 path: "build/node-scroll-info/node-scroll-info.js",33 code: []34};35_yuitest_coverage["build/node-scroll-info/node-scroll-info.js"].code=["YUI.add('node-scroll-info', function (Y, NAME) {","","/**","Provides the ScrollInfo Node plugin, which exposes convenient events and methods","related to scrolling.","","@module node-scroll-info","@since 3.7.0","**/","","/**","Provides convenient events and methods related to scrolling. This could be used,","for example, to implement infinite scrolling, or to lazy-load content based on","the current scroll position.","","### Example",""," var body = Y.one('body');",""," body.plug(Y.Plugin.ScrollInfo);",""," body.scrollInfo.on('scrollToBottom', function (e) {"," // Load more content when the user scrolls to the bottom of the page."," });","","@class Plugin.ScrollInfo","@extends Plugin.Base","@since 3.7.0","**/","","/**","Fired when the user scrolls within the host node.","","This event (like all scroll events exposed by ScrollInfo) is throttled and fired","only after the number of milliseconds specified by the `scrollDelay` attribute","have passed in order to prevent thrashing.","","This event passes along the event facade for the standard DOM `scroll` event and","mixes in the following additional properties.","","@event scroll","@param {Boolean} atBottom Whether the current scroll position is at the bottom"," of the scrollable region.","@param {Boolean} atLeft Whether the current scroll position is at the extreme"," left of the scrollable region.","@param {Boolean} atRight Whether the current scroll position is at the extreme"," right of the scrollable region.","@param {Boolean} atTop Whether the current scroll position is at the top of the"," scrollable region.","@param {Boolean} isScrollDown `true` if the user scrolled down.","@param {Boolean} isScrollLeft `true` if the user scrolled left.","@param {Boolean} isScrollRight `true` if the user scrolled right.","@param {Boolean} isScrollUp `true` if the user scrolled up.","@param {Number} scrollBottom Y value of the bottom-most onscreen pixel of the"," scrollable region.","@param {Number} scrollHeight Total height in pixels of the scrollable region,"," including offscreen pixels.","@param {Number} scrollLeft X value of the left-most onscreen pixel of the"," scrollable region.","@param {Number} scrollRight X value of the right-most onscreen pixel of the"," scrollable region.","@param {Number} scrollTop Y value of the top-most onscreen pixel of the"," scrollable region.","@param {Number} scrollWidth Total width in pixels of the scrollable region,"," including offscreen pixels.","@see scrollDelay","@see scrollMargin","**/","var EVT_SCROLL = 'scroll',",""," /**"," Fired when the user scrolls down within the host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollDown"," @see scroll"," **/"," EVT_SCROLL_DOWN = 'scrollDown',",""," /**"," Fired when the user scrolls left within the host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollLeft"," @see scroll"," **/"," EVT_SCROLL_LEFT = 'scrollLeft',",""," /**"," Fired when the user scrolls right within the host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollRight"," @see scroll"," **/"," EVT_SCROLL_RIGHT = 'scrollRight',",""," /**"," Fired when the user scrolls up within the host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollUp"," @see scroll"," **/"," EVT_SCROLL_UP = 'scrollUp',",""," /**"," Fired when the user scrolls to the bottom of the scrollable region within"," the host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollToBottom"," @see scroll"," **/"," EVT_SCROLL_TO_BOTTOM = 'scrollToBottom',",""," /**"," Fired when the user scrolls to the extreme left of the scrollable region"," within the host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollToLeft"," @see scroll"," **/"," EVT_SCROLL_TO_LEFT = 'scrollToLeft',",""," /**"," Fired when the user scrolls to the extreme right of the scrollable region"," within the host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollToRight"," @see scroll"," **/"," EVT_SCROLL_TO_RIGHT = 'scrollToRight',",""," /**"," Fired when the user scrolls to the top of the scrollable region within the"," host node.",""," This event provides the same event facade as the `scroll` event. See that"," event for details.",""," @event scrollToTop"," @see scroll"," **/"," EVT_SCROLL_TO_TOP = 'scrollToTop';","","Y.Plugin.ScrollInfo = Y.Base.create('scrollInfoPlugin', Y.Plugin.Base, [], {"," // -- Lifecycle Methods ----------------------------------------------------"," initializer: function (config) {"," // Cache for quicker lookups in the critical path."," this._host = config.host;"," this._hostIsBody = this._host.get('nodeName').toLowerCase() === 'body';"," this._scrollDelay = this.get('scrollDelay');"," this._scrollMargin = this.get('scrollMargin');"," this._scrollNode = this._getScrollNode();",""," this.refreshDimensions();",""," this._lastScroll = this.getScrollInfo();",""," this._bind();"," },",""," destructor: function () {"," (new Y.EventHandle(this._events)).detach();"," delete this._events;"," },",""," // -- Public Methods -------------------------------------------------------",""," /**"," Returns a NodeList containing all offscreen nodes inside the host node that"," match the given CSS selector. An offscreen node is any node that is entirely"," outside the visible (onscreen) region of the host node based on the current"," scroll location.",""," @method getOffscreenNodes"," @param {String} [selector] CSS selector. If omitted, all offscreen nodes"," will be returned."," @param {Number} [margin] Additional margin in pixels beyond the actual"," onscreen region that should be considered \"onscreen\" for the purposes of"," this query. Defaults to the value of the `scrollMargin` attribute."," @return {NodeList} Offscreen nodes matching _selector_."," @see scrollMargin"," **/"," getOffscreenNodes: function (selector, margin) {"," if (typeof margin === 'undefined') {"," margin = this._scrollMargin;"," }",""," var lastScroll = this._lastScroll,"," nodes = this._host.all(selector || '*'),",""," scrollBottom = lastScroll.scrollBottom + margin,"," scrollLeft = lastScroll.scrollLeft - margin,"," scrollRight = lastScroll.scrollRight + margin,"," scrollTop = lastScroll.scrollTop - margin,",""," self = this;",""," return nodes.filter(function (el) {"," var xy = Y.DOM.getXY(el),"," elLeft = xy[0] - self._left,"," elTop = xy[1] - self._top,"," elBottom, elRight;",""," // Check whether the element's top left point is within the"," // viewport. This is the least expensive check."," if (elLeft >= scrollLeft && elLeft < scrollRight &&"," elTop >= scrollTop && elTop < scrollBottom) {",""," return false;"," }",""," // Check whether the element's bottom right point is within the"," // viewport. This check is more expensive since we have to get the"," // element's height and width."," elBottom = elTop + el.offsetHeight;"," elRight = elLeft + el.offsetWidth;",""," if (elRight < scrollRight && elRight >= scrollLeft &&"," elBottom < scrollBottom && elBottom >= scrollTop) {",""," return false;"," }",""," // If we get here, the element isn't within the viewport."," return true;"," });"," },",""," /**"," Returns a NodeList containing all onscreen nodes inside the host node that"," match the given CSS selector. An onscreen node is any node that is fully or"," partially within the visible (onscreen) region of the host node based on the"," current scroll location.",""," @method getOnscreenNodes"," @param {String} [selector] CSS selector. If omitted, all onscreen nodes will"," be returned."," @param {Number} [margin] Additional margin in pixels beyond the actual"," onscreen region that should be considered \"onscreen\" for the purposes of"," this query. Defaults to the value of the `scrollMargin` attribute."," @return {NodeList} Onscreen nodes matching _selector_."," @see scrollMargin"," **/"," getOnscreenNodes: function (selector, margin) {"," if (typeof margin === 'undefined') {"," margin = this._scrollMargin;"," }",""," var lastScroll = this._lastScroll,"," nodes = this._host.all(selector || '*'),",""," scrollBottom = lastScroll.scrollBottom + margin,"," scrollLeft = lastScroll.scrollLeft - margin,"," scrollRight = lastScroll.scrollRight + margin,"," scrollTop = lastScroll.scrollTop - margin,",""," self = this;",""," return nodes.filter(function (el) {"," var xy = Y.DOM.getXY(el),"," elLeft = xy[0] - self._left,"," elTop = xy[1] - self._top,"," elBottom, elRight;",""," // Check whether the element's top left point is within the"," // viewport. This is the least expensive check."," if (elLeft >= scrollLeft && elLeft < scrollRight &&"," elTop >= scrollTop && elTop < scrollBottom) {",""," return true;"," }",""," // Check whether the element's bottom right point is within the"," // viewport. This check is more expensive since we have to get the"," // element's height and width."," elBottom = elTop + el.offsetHeight;"," elRight = elLeft + el.offsetWidth;",""," if (elRight < scrollRight && elRight >= scrollLeft &&"," elBottom < scrollBottom && elBottom >= scrollTop) {",""," return true;"," }",""," // If we get here, the element isn't within the viewport."," return false;"," });"," },",""," /**"," Returns an object hash containing information about the current scroll"," position of the host node. This is the same information that's mixed into"," the event facade of the `scroll` event and other scroll-related events.",""," @method getScrollInfo"," @return {Object} Object hash containing information about the current scroll"," position. See the `scroll` event for details on what properties this"," object contains."," @see scroll"," **/"," getScrollInfo: function () {"," var domNode = this._scrollNode,"," lastScroll = this._lastScroll,"," margin = this._scrollMargin,",""," scrollLeft = domNode.scrollLeft,"," scrollHeight = domNode.scrollHeight,"," scrollTop = domNode.scrollTop,"," scrollWidth = domNode.scrollWidth,",""," scrollBottom = scrollTop + this._height,"," scrollRight = scrollLeft + this._width;",""," return {"," atBottom: scrollBottom > (scrollHeight - margin),"," atLeft : scrollLeft < margin,"," atRight : scrollRight > (scrollWidth - margin),"," atTop : scrollTop < margin,",""," isScrollDown : lastScroll && scrollTop > lastScroll.scrollTop,"," isScrollLeft : lastScroll && scrollLeft < lastScroll.scrollLeft,"," isScrollRight: lastScroll && scrollLeft > lastScroll.scrollLeft,"," isScrollUp : lastScroll && scrollTop < lastScroll.scrollTop,",""," scrollBottom: scrollBottom,"," scrollHeight: scrollHeight,"," scrollLeft : scrollLeft,"," scrollRight : scrollRight,"," scrollTop : scrollTop,"," scrollWidth : scrollWidth"," };"," },",""," /**"," Refreshes cached position, height, and width dimensions for the host node."," If the host node is the body, then the viewport height and width will be"," used.",""," This info is cached to improve performance during scroll events, since it's"," expensive to touch the DOM for these values. Dimensions are automatically"," refreshed whenever the browser is resized, but if you change the dimensions"," or position of the host node in JS, you may need to call"," `refreshDimensions()` manually to cache the new dimensions.",""," @method refreshDimensions"," **/"," refreshDimensions: function () {"," // WebKit only returns reliable scroll info on the body, and only"," // returns reliable height/width info on the documentElement, so we"," // have to special-case it (see the other special case in"," // _getScrollNode())."," //"," // On iOS devices, documentElement.clientHeight/Width aren't reliable,"," // but window.innerHeight/Width are. And no, dom-screen's viewport size"," // methods don't account for this, which is why we do it here.",""," var hostIsBody = this._hostIsBody,"," iosHack = hostIsBody && Y.UA.ios,"," win = Y.config.win,"," el;",""," if (hostIsBody && Y.UA.webkit) {"," el = Y.config.doc.documentElement;"," } else {"," el = this._scrollNode;"," }",""," this._height = iosHack ? win.innerHeight : el.clientHeight;"," this._left = el.offsetLeft;"," this._top = el.offsetTop;"," this._width = iosHack ? win.innerWidth : el.clientWidth;"," },",""," // -- Protected Methods ----------------------------------------------------",""," /**"," Binds event handlers.",""," @method _bind"," @protected"," **/"," _bind: function () {"," var winNode = Y.one('win');",""," this._events = ["," this.after({"," scrollDelayChange : this._afterScrollDelayChange,"," scrollMarginChange: this._afterScrollMarginChange"," }),",""," winNode.on('windowresize', this._afterResize, this),",""," // If we're attached to the body, listen for the scroll event on the"," // window, since <body> doesn't have a scroll event."," (this._hostIsBody ? winNode : this._host).after("," 'scroll', this._afterScroll, this)"," ];"," },",""," /**"," Returns the DOM node that should be used to lookup scroll coordinates. In"," some browsers, the `<body>` element doesn't return scroll coordinates, and"," the documentElement must be used instead; this method takes care of"," determining which node should be used.",""," @method _getScrollNode"," @return {HTMLElement} DOM node."," @protected"," **/"," _getScrollNode: function () {"," // WebKit returns scroll coordinates on the body element, but other"," // browsers don't, so we have to use the documentElement."," return this._hostIsBody && !Y.UA.webkit ? Y.config.doc.documentElement :"," Y.Node.getDOMNode(this._host);"," },",""," /**"," Mixes detailed scroll information into the given DOM `scroll` event facade"," and fires appropriate local events.",""," @method _triggerScroll"," @param {EventFacade} e Event facade from the DOM `scroll` event."," @protected"," **/"," _triggerScroll: function (e) {"," var info = this.getScrollInfo(),"," facade = Y.merge(e, info),"," lastScroll = this._lastScroll;",""," this._lastScroll = info;",""," this.fire(EVT_SCROLL, facade);",""," if (info.isScrollLeft) {"," this.fire(EVT_SCROLL_LEFT, facade);"," } else if (info.isScrollRight) {"," this.fire(EVT_SCROLL_RIGHT, facade);"," }",""," if (info.isScrollUp) {"," this.fire(EVT_SCROLL_UP, facade);"," } else if (info.isScrollDown) {"," this.fire(EVT_SCROLL_DOWN, facade);"," }",""," if (info.atBottom && (!lastScroll.atBottom ||"," info.scrollHeight > lastScroll.scrollHeight)) {",""," this.fire(EVT_SCROLL_TO_BOTTOM, facade);"," }",""," if (info.atLeft && !lastScroll.atLeft) {"," this.fire(EVT_SCROLL_TO_LEFT, facade);"," }",""," if (info.atRight && (!lastScroll.atRight ||"," info.scrollWidth > lastScroll.scrollWidth)) {",""," this.fire(EVT_SCROLL_TO_RIGHT, facade);"," }",""," if (info.atTop && !lastScroll.atTop) {"," this.fire(EVT_SCROLL_TO_TOP, facade);"," }"," },",""," // -- Protected Event Handlers ---------------------------------------------",""," /**"," Handles browser resize events.",""," @method _afterResize"," @param {EventFacade} e"," @protected"," **/"," _afterResize: function (e) {"," this.refreshDimensions();"," },",""," /**"," Handles DOM `scroll` events.",""," @method _afterScroll"," @param {EventFacade} e"," @protected"," **/"," _afterScroll: function (e) {"," var self = this;",""," clearTimeout(this._scrollTimeout);",""," this._scrollTimeout = setTimeout(function () {"," self._triggerScroll(e);"," }, this._scrollDelay);"," },",""," /**"," Caches the `scrollDelay` value after that attribute changes to allow"," quicker lookups in critical path code.",""," @method _afterScrollDelayChange"," @param {EventFacade} e"," @protected"," **/"," _afterScrollDelayChange: function (e) {"," this._scrollDelay = e.newVal;"," },",""," /**"," Caches the `scrollMargin` value after that attribute changes to allow"," quicker lookups in critical path code.",""," @method _afterScrollMarginChange"," @param {EventFacade} e"," @protected"," **/"," _afterScrollMarginChange: function (e) {"," this._scrollMargin = e.newVal;"," }","}, {"," NS: 'scrollInfo',",""," ATTRS: {"," /**"," Number of milliseconds to wait after a native `scroll` event before"," firing local scroll events. If another native scroll event occurs during"," this time, previous events will be ignored. This ensures that we don't"," fire thousands of events when the user is scrolling quickly.",""," @attribute scrollDelay"," @type Number"," @default 50"," **/"," scrollDelay: {"," value: 50"," },",""," /**"," Additional margin in pixels beyond the onscreen region of the host node"," that should be considered \"onscreen\".",""," For example, if set to 50, then a `scrollToBottom` event would be fired"," when the user scrolls to within 50 pixels of the bottom of the"," scrollable region, even if they don't actually scroll completely to the"," very bottom pixel.",""," This margin also applies to the `getOffscreenNodes()` and"," `getOnscreenNodes()` methods by default.",""," @attribute scrollMargin"," @type Number"," @default 50"," **/"," scrollMargin: {"," value: 50"," }"," }","});","","","}, '3.7.3', {\"requires\": [\"base-build\", \"dom-screen\", \"event-resize\", \"node-pluginhost\", \"plugin\"]});"];36_yuitest_coverage["build/node-scroll-info/node-scroll-info.js"].lines = {"1":0,"69":0,"163":0,"167":0,"168":0,"169":0,"170":0,"171":0,"173":0,"175":0,"177":0,"181":0,"182":0,"203":0,"204":0,"207":0,"217":0,"218":0,"225":0,"228":0,"234":0,"235":0,"237":0,"240":0,"244":0,"264":0,"265":0,"268":0,"278":0,"279":0,"286":0,"289":0,"295":0,"296":0,"298":0,"301":0,"305":0,"321":0,"333":0,"376":0,"381":0,"382":0,"384":0,"387":0,"388":0,"389":0,"390":0,"402":0,"404":0,"432":0,"445":0,"449":0,"451":0,"453":0,"454":0,"455":0,"456":0,"459":0,"460":0,"461":0,"462":0,"465":0,"468":0,"471":0,"472":0,"475":0,"478":0,"481":0,"482":0,"496":0,"507":0,"509":0,"511":0,"512":0,"525":0,"537":0};37_yuitest_coverage["build/node-scroll-info/node-scroll-info.js"].functions = {"initializer:165":0,"destructor:180":0,"(anonymous 2):217":0,"getOffscreenNodes:202":0,"(anonymous 3):278":0,"getOnscreenNodes:263":0,"getScrollInfo:320":0,"refreshDimensions:366":0,"_bind:401":0,"_getScrollNode:429":0,"_triggerScroll:444":0,"_afterResize:495":0,"(anonymous 4):511":0,"_afterScroll:506":0,"_afterScrollDelayChange:524":0,"_afterScrollMarginChange:536":0,"(anonymous 1):1":0};38_yuitest_coverage["build/node-scroll-info/node-scroll-info.js"].coveredLines = 76;39_yuitest_coverage["build/node-scroll-info/node-scroll-info.js"].coveredFunctions = 17;40_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 1);41YUI.add('node-scroll-info', function (Y, NAME) {42/**43Provides the ScrollInfo Node plugin, which exposes convenient events and methods44related to scrolling.45@module node-scroll-info46@since 3.7.047**/48/**49Provides convenient events and methods related to scrolling. This could be used,50for example, to implement infinite scrolling, or to lazy-load content based on51the current scroll position.52### Example53 var body = Y.one('body');54 body.plug(Y.Plugin.ScrollInfo);55 body.scrollInfo.on('scrollToBottom', function (e) {56 // Load more content when the user scrolls to the bottom of the page.57 });58@class Plugin.ScrollInfo59@extends Plugin.Base60@since 3.7.061**/62/**63Fired when the user scrolls within the host node.64This event (like all scroll events exposed by ScrollInfo) is throttled and fired65only after the number of milliseconds specified by the `scrollDelay` attribute66have passed in order to prevent thrashing.67This event passes along the event facade for the standard DOM `scroll` event and68mixes in the following additional properties.69@event scroll70@param {Boolean} atBottom Whether the current scroll position is at the bottom71 of the scrollable region.72@param {Boolean} atLeft Whether the current scroll position is at the extreme73 left of the scrollable region.74@param {Boolean} atRight Whether the current scroll position is at the extreme75 right of the scrollable region.76@param {Boolean} atTop Whether the current scroll position is at the top of the77 scrollable region.78@param {Boolean} isScrollDown `true` if the user scrolled down.79@param {Boolean} isScrollLeft `true` if the user scrolled left.80@param {Boolean} isScrollRight `true` if the user scrolled right.81@param {Boolean} isScrollUp `true` if the user scrolled up.82@param {Number} scrollBottom Y value of the bottom-most onscreen pixel of the83 scrollable region.84@param {Number} scrollHeight Total height in pixels of the scrollable region,85 including offscreen pixels.86@param {Number} scrollLeft X value of the left-most onscreen pixel of the87 scrollable region.88@param {Number} scrollRight X value of the right-most onscreen pixel of the89 scrollable region.90@param {Number} scrollTop Y value of the top-most onscreen pixel of the91 scrollable region.92@param {Number} scrollWidth Total width in pixels of the scrollable region,93 including offscreen pixels.94@see scrollDelay95@see scrollMargin96**/97_yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "(anonymous 1)", 1);98_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 69);99var EVT_SCROLL = 'scroll',100 /**101 Fired when the user scrolls down within the host node.102 This event provides the same event facade as the `scroll` event. See that103 event for details.104 @event scrollDown105 @see scroll106 **/107 EVT_SCROLL_DOWN = 'scrollDown',108 /**109 Fired when the user scrolls left within the host node.110 This event provides the same event facade as the `scroll` event. See that111 event for details.112 @event scrollLeft113 @see scroll114 **/115 EVT_SCROLL_LEFT = 'scrollLeft',116 /**117 Fired when the user scrolls right within the host node.118 This event provides the same event facade as the `scroll` event. See that119 event for details.120 @event scrollRight121 @see scroll122 **/123 EVT_SCROLL_RIGHT = 'scrollRight',124 /**125 Fired when the user scrolls up within the host node.126 This event provides the same event facade as the `scroll` event. See that127 event for details.128 @event scrollUp129 @see scroll130 **/131 EVT_SCROLL_UP = 'scrollUp',132 /**133 Fired when the user scrolls to the bottom of the scrollable region within134 the host node.135 This event provides the same event facade as the `scroll` event. See that136 event for details.137 @event scrollToBottom138 @see scroll139 **/140 EVT_SCROLL_TO_BOTTOM = 'scrollToBottom',141 /**142 Fired when the user scrolls to the extreme left of the scrollable region143 within the host node.144 This event provides the same event facade as the `scroll` event. See that145 event for details.146 @event scrollToLeft147 @see scroll148 **/149 EVT_SCROLL_TO_LEFT = 'scrollToLeft',150 /**151 Fired when the user scrolls to the extreme right of the scrollable region152 within the host node.153 This event provides the same event facade as the `scroll` event. See that154 event for details.155 @event scrollToRight156 @see scroll157 **/158 EVT_SCROLL_TO_RIGHT = 'scrollToRight',159 /**160 Fired when the user scrolls to the top of the scrollable region within the161 host node.162 This event provides the same event facade as the `scroll` event. See that163 event for details.164 @event scrollToTop165 @see scroll166 **/167 EVT_SCROLL_TO_TOP = 'scrollToTop';168_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 163);169Y.Plugin.ScrollInfo = Y.Base.create('scrollInfoPlugin', Y.Plugin.Base, [], {170 // -- Lifecycle Methods ----------------------------------------------------171 initializer: function (config) {172 // Cache for quicker lookups in the critical path.173 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "initializer", 165);174_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 167);175this._host = config.host;176 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 168);177this._hostIsBody = this._host.get('nodeName').toLowerCase() === 'body';178 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 169);179this._scrollDelay = this.get('scrollDelay');180 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 170);181this._scrollMargin = this.get('scrollMargin');182 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 171);183this._scrollNode = this._getScrollNode();184 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 173);185this.refreshDimensions();186 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 175);187this._lastScroll = this.getScrollInfo();188 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 177);189this._bind();190 },191 destructor: function () {192 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "destructor", 180);193_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 181);194(new Y.EventHandle(this._events)).detach();195 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 182);196delete this._events;197 },198 // -- Public Methods -------------------------------------------------------199 /**200 Returns a NodeList containing all offscreen nodes inside the host node that201 match the given CSS selector. An offscreen node is any node that is entirely202 outside the visible (onscreen) region of the host node based on the current203 scroll location.204 @method getOffscreenNodes205 @param {String} [selector] CSS selector. If omitted, all offscreen nodes206 will be returned.207 @param {Number} [margin] Additional margin in pixels beyond the actual208 onscreen region that should be considered "onscreen" for the purposes of209 this query. Defaults to the value of the `scrollMargin` attribute.210 @return {NodeList} Offscreen nodes matching _selector_.211 @see scrollMargin212 **/213 getOffscreenNodes: function (selector, margin) {214 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "getOffscreenNodes", 202);215_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 203);216if (typeof margin === 'undefined') {217 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 204);218margin = this._scrollMargin;219 }220 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 207);221var lastScroll = this._lastScroll,222 nodes = this._host.all(selector || '*'),223 scrollBottom = lastScroll.scrollBottom + margin,224 scrollLeft = lastScroll.scrollLeft - margin,225 scrollRight = lastScroll.scrollRight + margin,226 scrollTop = lastScroll.scrollTop - margin,227 self = this;228 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 217);229return nodes.filter(function (el) {230 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "(anonymous 2)", 217);231_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 218);232var xy = Y.DOM.getXY(el),233 elLeft = xy[0] - self._left,234 elTop = xy[1] - self._top,235 elBottom, elRight;236 // Check whether the element's top left point is within the237 // viewport. This is the least expensive check.238 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 225);239if (elLeft >= scrollLeft && elLeft < scrollRight &&240 elTop >= scrollTop && elTop < scrollBottom) {241 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 228);242return false;243 }244 // Check whether the element's bottom right point is within the245 // viewport. This check is more expensive since we have to get the246 // element's height and width.247 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 234);248elBottom = elTop + el.offsetHeight;249 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 235);250elRight = elLeft + el.offsetWidth;251 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 237);252if (elRight < scrollRight && elRight >= scrollLeft &&253 elBottom < scrollBottom && elBottom >= scrollTop) {254 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 240);255return false;256 }257 // If we get here, the element isn't within the viewport.258 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 244);259return true;260 });261 },262 /**263 Returns a NodeList containing all onscreen nodes inside the host node that264 match the given CSS selector. An onscreen node is any node that is fully or265 partially within the visible (onscreen) region of the host node based on the266 current scroll location.267 @method getOnscreenNodes268 @param {String} [selector] CSS selector. If omitted, all onscreen nodes will269 be returned.270 @param {Number} [margin] Additional margin in pixels beyond the actual271 onscreen region that should be considered "onscreen" for the purposes of272 this query. Defaults to the value of the `scrollMargin` attribute.273 @return {NodeList} Onscreen nodes matching _selector_.274 @see scrollMargin275 **/276 getOnscreenNodes: function (selector, margin) {277 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "getOnscreenNodes", 263);278_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 264);279if (typeof margin === 'undefined') {280 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 265);281margin = this._scrollMargin;282 }283 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 268);284var lastScroll = this._lastScroll,285 nodes = this._host.all(selector || '*'),286 scrollBottom = lastScroll.scrollBottom + margin,287 scrollLeft = lastScroll.scrollLeft - margin,288 scrollRight = lastScroll.scrollRight + margin,289 scrollTop = lastScroll.scrollTop - margin,290 self = this;291 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 278);292return nodes.filter(function (el) {293 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "(anonymous 3)", 278);294_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 279);295var xy = Y.DOM.getXY(el),296 elLeft = xy[0] - self._left,297 elTop = xy[1] - self._top,298 elBottom, elRight;299 // Check whether the element's top left point is within the300 // viewport. This is the least expensive check.301 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 286);302if (elLeft >= scrollLeft && elLeft < scrollRight &&303 elTop >= scrollTop && elTop < scrollBottom) {304 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 289);305return true;306 }307 // Check whether the element's bottom right point is within the308 // viewport. This check is more expensive since we have to get the309 // element's height and width.310 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 295);311elBottom = elTop + el.offsetHeight;312 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 296);313elRight = elLeft + el.offsetWidth;314 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 298);315if (elRight < scrollRight && elRight >= scrollLeft &&316 elBottom < scrollBottom && elBottom >= scrollTop) {317 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 301);318return true;319 }320 // If we get here, the element isn't within the viewport.321 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 305);322return false;323 });324 },325 /**326 Returns an object hash containing information about the current scroll327 position of the host node. This is the same information that's mixed into328 the event facade of the `scroll` event and other scroll-related events.329 @method getScrollInfo330 @return {Object} Object hash containing information about the current scroll331 position. See the `scroll` event for details on what properties this332 object contains.333 @see scroll334 **/335 getScrollInfo: function () {336 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "getScrollInfo", 320);337_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 321);338var domNode = this._scrollNode,339 lastScroll = this._lastScroll,340 margin = this._scrollMargin,341 scrollLeft = domNode.scrollLeft,342 scrollHeight = domNode.scrollHeight,343 scrollTop = domNode.scrollTop,344 scrollWidth = domNode.scrollWidth,345 scrollBottom = scrollTop + this._height,346 scrollRight = scrollLeft + this._width;347 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 333);348return {349 atBottom: scrollBottom > (scrollHeight - margin),350 atLeft : scrollLeft < margin,351 atRight : scrollRight > (scrollWidth - margin),352 atTop : scrollTop < margin,353 isScrollDown : lastScroll && scrollTop > lastScroll.scrollTop,354 isScrollLeft : lastScroll && scrollLeft < lastScroll.scrollLeft,355 isScrollRight: lastScroll && scrollLeft > lastScroll.scrollLeft,356 isScrollUp : lastScroll && scrollTop < lastScroll.scrollTop,357 scrollBottom: scrollBottom,358 scrollHeight: scrollHeight,359 scrollLeft : scrollLeft,360 scrollRight : scrollRight,361 scrollTop : scrollTop,362 scrollWidth : scrollWidth363 };364 },365 /**366 Refreshes cached position, height, and width dimensions for the host node.367 If the host node is the body, then the viewport height and width will be368 used.369 This info is cached to improve performance during scroll events, since it's370 expensive to touch the DOM for these values. Dimensions are automatically371 refreshed whenever the browser is resized, but if you change the dimensions372 or position of the host node in JS, you may need to call373 `refreshDimensions()` manually to cache the new dimensions.374 @method refreshDimensions375 **/376 refreshDimensions: function () {377 // WebKit only returns reliable scroll info on the body, and only378 // returns reliable height/width info on the documentElement, so we379 // have to special-case it (see the other special case in380 // _getScrollNode()).381 //382 // On iOS devices, documentElement.clientHeight/Width aren't reliable,383 // but window.innerHeight/Width are. And no, dom-screen's viewport size384 // methods don't account for this, which is why we do it here.385 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "refreshDimensions", 366);386_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 376);387var hostIsBody = this._hostIsBody,388 iosHack = hostIsBody && Y.UA.ios,389 win = Y.config.win,390 el;391 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 381);392if (hostIsBody && Y.UA.webkit) {393 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 382);394el = Y.config.doc.documentElement;395 } else {396 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 384);397el = this._scrollNode;398 }399 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 387);400this._height = iosHack ? win.innerHeight : el.clientHeight;401 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 388);402this._left = el.offsetLeft;403 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 389);404this._top = el.offsetTop;405 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 390);406this._width = iosHack ? win.innerWidth : el.clientWidth;407 },408 // -- Protected Methods ----------------------------------------------------409 /**410 Binds event handlers.411 @method _bind412 @protected413 **/414 _bind: function () {415 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "_bind", 401);416_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 402);417var winNode = Y.one('win');418 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 404);419this._events = [420 this.after({421 scrollDelayChange : this._afterScrollDelayChange,422 scrollMarginChange: this._afterScrollMarginChange423 }),424 winNode.on('windowresize', this._afterResize, this),425 // If we're attached to the body, listen for the scroll event on the426 // window, since <body> doesn't have a scroll event.427 (this._hostIsBody ? winNode : this._host).after(428 'scroll', this._afterScroll, this)429 ];430 },431 /**432 Returns the DOM node that should be used to lookup scroll coordinates. In433 some browsers, the `<body>` element doesn't return scroll coordinates, and434 the documentElement must be used instead; this method takes care of435 determining which node should be used.436 @method _getScrollNode437 @return {HTMLElement} DOM node.438 @protected439 **/440 _getScrollNode: function () {441 // WebKit returns scroll coordinates on the body element, but other442 // browsers don't, so we have to use the documentElement.443 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "_getScrollNode", 429);444_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 432);445return this._hostIsBody && !Y.UA.webkit ? Y.config.doc.documentElement :446 Y.Node.getDOMNode(this._host);447 },448 /**449 Mixes detailed scroll information into the given DOM `scroll` event facade450 and fires appropriate local events.451 @method _triggerScroll452 @param {EventFacade} e Event facade from the DOM `scroll` event.453 @protected454 **/455 _triggerScroll: function (e) {456 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "_triggerScroll", 444);457_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 445);458var info = this.getScrollInfo(),459 facade = Y.merge(e, info),460 lastScroll = this._lastScroll;461 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 449);462this._lastScroll = info;463 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 451);464this.fire(EVT_SCROLL, facade);465 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 453);466if (info.isScrollLeft) {467 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 454);468this.fire(EVT_SCROLL_LEFT, facade);469 } else {_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 455);470if (info.isScrollRight) {471 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 456);472this.fire(EVT_SCROLL_RIGHT, facade);473 }}474 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 459);475if (info.isScrollUp) {476 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 460);477this.fire(EVT_SCROLL_UP, facade);478 } else {_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 461);479if (info.isScrollDown) {480 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 462);481this.fire(EVT_SCROLL_DOWN, facade);482 }}483 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 465);484if (info.atBottom && (!lastScroll.atBottom ||485 info.scrollHeight > lastScroll.scrollHeight)) {486 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 468);487this.fire(EVT_SCROLL_TO_BOTTOM, facade);488 }489 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 471);490if (info.atLeft && !lastScroll.atLeft) {491 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 472);492this.fire(EVT_SCROLL_TO_LEFT, facade);493 }494 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 475);495if (info.atRight && (!lastScroll.atRight ||496 info.scrollWidth > lastScroll.scrollWidth)) {497 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 478);498this.fire(EVT_SCROLL_TO_RIGHT, facade);499 }500 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 481);501if (info.atTop && !lastScroll.atTop) {502 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 482);503this.fire(EVT_SCROLL_TO_TOP, facade);504 }505 },506 // -- Protected Event Handlers ---------------------------------------------507 /**508 Handles browser resize events.509 @method _afterResize510 @param {EventFacade} e511 @protected512 **/513 _afterResize: function (e) {514 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "_afterResize", 495);515_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 496);516this.refreshDimensions();517 },518 /**519 Handles DOM `scroll` events.520 @method _afterScroll521 @param {EventFacade} e522 @protected523 **/524 _afterScroll: function (e) {525 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "_afterScroll", 506);526_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 507);527var self = this;528 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 509);529clearTimeout(this._scrollTimeout);530 _yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 511);531this._scrollTimeout = setTimeout(function () {532 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "(anonymous 4)", 511);533_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 512);534self._triggerScroll(e);535 }, this._scrollDelay);536 },537 /**538 Caches the `scrollDelay` value after that attribute changes to allow539 quicker lookups in critical path code.540 @method _afterScrollDelayChange541 @param {EventFacade} e542 @protected543 **/544 _afterScrollDelayChange: function (e) {545 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "_afterScrollDelayChange", 524);546_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 525);547this._scrollDelay = e.newVal;548 },549 /**550 Caches the `scrollMargin` value after that attribute changes to allow551 quicker lookups in critical path code.552 @method _afterScrollMarginChange553 @param {EventFacade} e554 @protected555 **/556 _afterScrollMarginChange: function (e) {557 _yuitest_coverfunc("build/node-scroll-info/node-scroll-info.js", "_afterScrollMarginChange", 536);558_yuitest_coverline("build/node-scroll-info/node-scroll-info.js", 537);559this._scrollMargin = e.newVal;560 }561}, {562 NS: 'scrollInfo',563 ATTRS: {564 /**565 Number of milliseconds to wait after a native `scroll` event before566 firing local scroll events. If another native scroll event occurs during567 this time, previous events will be ignored. This ensures that we don't568 fire thousands of events when the user is scrolling quickly.569 @attribute scrollDelay570 @type Number571 @default 50572 **/573 scrollDelay: {574 value: 50575 },576 /**577 Additional margin in pixels beyond the onscreen region of the host node578 that should be considered "onscreen".579 For example, if set to 50, then a `scrollToBottom` event would be fired580 when the user scrolls to within 50 pixels of the bottom of the581 scrollable region, even if they don't actually scroll completely to the582 very bottom pixel.583 This margin also applies to the `getOffscreenNodes()` and584 `getOnscreenNodes()` methods by default.585 @attribute scrollMargin586 @type Number587 @default 50588 **/589 scrollMargin: {590 value: 50591 }592 }593});...

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ScrollPanel.js

Source:ScrollPanel.js Github

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1// ScrollPanel.js2var scrollPanels = new Array();3var scrollResizeTimer = null;4var scrollGlobalPosition = 0;5// Initialize the scroll panel variables6function scrollPanelInit(scrollContainer, forceReload) {7 if (!(scrollContainer in scrollPanels)) {8 return;9 }10 var scrollPanel = scrollPanels[scrollContainer];11 var isVerticalLayout = scrollPanel.IsVerticalLayout;12 var isRTL = scrollPanel.IsRTL;13 if (forceReload) {14 // Renew the scroll panel variables15 scrollPanel.Container = null;16 scrollPanel.ScrollAreaContainer = null;17 scrollPanel.LastItem = null;18 scrollPanel.ItemWidth = null;19 scrollPanel.ItemHeight = null;20 }21 // Load the scroll panel element variables22 if (scrollPanel.Container === null) {23 scrollPanel.Container = $cmsj('#' + scrollContainer);24 }25 // Do not proceed when the scroll panel is hidden26 if (!scrollPanel.Container.is(':visible')) {27 return;28 }29 if (scrollPanel.ScrollAreaContainer === null) {30 scrollPanel.ScrollAreaContainer = $cmsj('#' + scrollPanel.InnerContainerId + ':first', scrollPanel.Container);31 }32 if (scrollPanel.SeparatorItem === null) {33 if (scrollPanel.ItemSeparatorClass.length > 0) {34 scrollPanel.SeparatorItem = $cmsj('.' + scrollPanel.ItemSeparatorClass + ':first', scrollPanel.ScrollAreaContainer);35 }36 }37 if (scrollPanel.LastItem === null) {38 // Setup the last item variable (and its related variables) when the default step is not defined39 if (scrollPanel.ItemClass.length > 0) {40 var items = $cmsj('.' + scrollPanel.ItemClass, scrollPanel.Container);41 var itemsVisible = items;42 if (items.first().parent().is(":visible")) {43 // Filter out invisible items (Web part toolbar)44 itemsVisible = items.filter(":visible");45 }46 var lastItem = itemsVisible.last();47 scrollPanel.LastItem = lastItem;48 if (!spIsAbsuluteOrFixed(scrollPanel.Container.parent())) {49 scrollPanel.ScrollAreaContainer.height(scrollPanel.Container.outerHeight());50 }51 if (scrollPanel.ItemWidth === null) {52 // Calculate the ItemWidht according to the rendered items if their class is defined53 var separatorWidth = 0;54 if (scrollPanel.SeparatorItem != null) {55 separatorWidth = scrollPanel.SeparatorItem.outerWidth();56 }57 scrollPanel.ItemWidth = lastItem.outerWidth() + spTryParseInt(lastItem.css("margin-left"), 0) + spTryParseInt(lastItem.css("margin-right"), 0) + separatorWidth;58 }59 if (scrollPanel.ItemHeight === null) {60 // Calculate the ItemHeight according to the rendered items if their class is defined61 var separatorHeight = 0;62 if (scrollPanel.SeparatorItem != null) {63 separatorHeight = scrollPanel.SeparatorItem.outerHeight();64 }65 scrollPanel.ItemHeight = lastItem.outerHeight() + spTryParseInt(lastItem.css("margin-top"), 0) + spTryParseInt(lastItem.css("margin-bottom"), 0) + separatorHeight;66 }67 // Expand the scroll area div in order to accommodate all the rendered web part items and ensure its scrolling capabilities68 if (scrollPanel.AdjustScrollAreaSize && !spIsAbsuluteOrFixed(scrollPanel.Container.parent())) {69 if (!isVerticalLayout) {70 if ((items.length * scrollPanel.ItemWidth) > scrollPanel.ScrollStep) {71 scrollPanel.ScrollAreaContainer.width((scrollPanel.ItemWidth * items.length) + scrollPanel.Container.outerWidth());72 }73 }74 else {75 if ((items.length * scrollPanel.ItemHeight) > scrollPanel.ScrollStep) {76 scrollPanel.ScrollAreaContainer.height((scrollPanel.ItemHeight * items.length) + scrollPanel.Container.outerHeight());77 }78 }79 }80 }81 else {82 // Calculate the ItemWidth/Height as a total width/height of the rendered content of the scroll panel (i.e. <UL> -> <LI> structure without css class)83 if ((scrollPanel.ItemWidth === null) || (scrollPanel.ItemHeight === null)) {84 scrollPanel.ItemWidth = scrollPanel.ScrollAreaContainer.outerWidth();85 scrollPanel.ItemHeight = scrollPanel.ScrollAreaContainer.outerHeight();86 }87 }88 }89 // Check whether to slide to the beginning (top/left) when the displayed area is out of boundaries90 if ((scrollPanel.ItemClass.length > 0)) {91 if (!isVerticalLayout) {92 var lastItemLeft = 0;93 if (scrollPanel.LastItem.length > 0) {94 lastItemLeft = scrollPanel.LastItem.position().left;95 }96 if ((scrollPanel.LastItem.length == 0)97 || (!isRTL && (lastItemLeft < 0) && (lastItemLeft + scrollPanel.LastItem.width() < 0))98 || (isRTL && (lastItemLeft > scrollPanel.Container.position().left + scrollPanel.Container.width()))) {99 var bodyElem = $cmsj('body');100 if (bodyElem.hasClass('Chrome') && isRTL) {101 scrollPanel.Container.scrollLeft(scrollPanel.ScrollAreaContainer.outerWidth());102 }103 else {104 scrollPanel.Container.scrollLeft(0);105 }106 spScrollBack(scrollContainer);107 }108 }109 else {110 if ((scrollPanel.LastItem.length == 0) || (scrollPanel.LastItem.position().top < 0)) {111 scrollPanel.Container.scrollTop(0);112 spScrollBack(scrollContainer);113 }114 }115 }116 // Setup the scroll step and set the forward button visibility117 spSetupForwardScroll(scrollContainer, forceReload);118 // Display/Hide the back scroller119 var backScrollerVisible = false;120 if (!isVerticalLayout) {121 if (!isRTL) {122 backScrollerVisible = (scrollPanel.Container.scrollLeft() > 0);123 }124 else {125 // RTL126 var originalScrollLeft = scrollPanel.Container.scrollLeft();127 // Display the back scroller if it is possible to scroll back by 1px128 var scrollOnePixelForward = (scrollPanel.ForwardScrollStep > 0) ? 1 : -1;129 scrollPanel.Container.scrollLeft(originalScrollLeft - scrollOnePixelForward);130 backScrollerVisible = (scrollPanel.Container.scrollLeft() != originalScrollLeft);131 // Restore the original scroll position132 scrollPanel.Container.scrollLeft(originalScrollLeft);133 }134 }135 else {136 backScrollerVisible = (scrollPanel.Container.scrollTop() > 0);137 }138 if (backScrollerVisible) {139 scrollPanel.BackwardScroller.fadeIn();140 }141 else {142 scrollPanel.BackwardScroller.fadeOut();143 }144 if (forceReload) {145 // Append mouse wheel event on menu146 scrollPanel.Container.mousewheel(function (event, delta) {147 if (delta > 0) { spScrollBack(scrollContainer); }148 else { spScrollForward(scrollContainer); }149 return false;150 });151 // Disable selection of the scroll buttons152 scrollPanel.ForwardScroller.spDisableSelection();153 scrollPanel.BackwardScroller.spDisableSelection();154 }155}156// Setup the scroll step and set the forward button visibility157function spSetupForwardScroll(scrollContainer, forceReload) {158 var scrollPanel = scrollPanels[scrollContainer];159 var isVerticalLayout = scrollPanel.IsVerticalLayout;160 var isRTL = scrollPanel.IsRTL;161 var forwardScrollerFadeIn = (scrollPanel.ItemClass.length == 0);162 var lastItem = scrollPanel.LastItem;163 if (lastItem == null) {164 lastItem = scrollPanel.ScrollAreaContainer.children().last();165 }166 var lastItemVisible = true;167 // Set the lastItemVisible variable only when the whole scroll panel is visible168 if (lastItem.parent().is(":visible")) {169 lastItemVisible = lastItem.is(':visible');170 }171 // Display the last item in order to indicate whether the forward scroll button should be displayed172 if (!lastItemVisible) {173 lastItem.show();174 }175 var containerPosition = scrollPanel.Container.position();176 var containerLeft = containerPosition.left;177 var containerTop = containerPosition.top;178 var docScroll = { x: 0, y: 0 };179 var containerParent = scrollPanel.Container.parent();180 // Get scroll container position for absolute/fixed context menus181 if (spIsAbsuluteOrFixed(containerParent)) {182 var parentContainerPosition = containerParent.offset();183 var parentContainerBorderLeft = parseInt(containerParent.css('border-left-width'), 10);184 var parentContainerBorderTop = parseInt(containerParent.css('border-top-width'), 10);185 containerLeft = parentContainerPosition.left + parentContainerBorderLeft;186 containerTop = parentContainerPosition.top + parentContainerBorderTop;187 // Take in account document scrolling for absolute positioning188 docScroll.x = document.body.scrollLeft || document.documentElement.scrollLeft;189 docScroll.y = document.body.scrollTop || document.documentElement.scrollTop;190 }191 // Decide whether the forward scroller should be displayed192 if (lastItem.length > 0) {193 if (!isVerticalLayout) {194 if (!isRTL) {195 forwardScrollerFadeIn = (lastItem.position().left + lastItem.width() - docScroll.x) > (containerLeft + scrollPanel.Container.width() - spTryParseInt(scrollPanel.ScrollAreaContainer.css('margin-right'), 0));196 }197 else {198 forwardScrollerFadeIn = (lastItem.position().left - docScroll.x) < (containerLeft + spTryParseInt(scrollPanel.ScrollAreaContainer.css('margin-left'), 0));199 }200 }201 else {202 var lastItemMargin = spTryParseInt(lastItem.css('margin-top'), 10);203 forwardScrollerFadeIn = (lastItem.offset().top + scrollPanel.ItemHeight - docScroll.y) > (containerTop + scrollPanel.Container.height() + lastItemMargin - spTryParseInt(scrollPanel.ScrollAreaContainer.css('margin-bottom'), 0));204 }205 }206 // Hide the last item if it was originally hidden207 if (!lastItemVisible) {208 lastItem.hide();209 }210 if (forceReload) {211 scrollPanel.ForwardScrollStep = scrollPanel.ScrollStep;212 // Revert the scroll step for RTL213 if (!scrollPanel.IsVerticalLayout && scrollPanel.IsRTL) {214 // ScrollLeft() in RTL - different behavior for different browsers:215 // | FF | IE | Chrome/Safari |216 // No scroll: | 0 | 0 | scrollAreaWidth (example: 4000)217 // After 300px forward scroll: | -300 | 300 | scrollAreaWidth - 300 (example: 3700)218 // Revert the forward scroll step219 scrollPanel.ForwardScrollStep = (-1) * scrollPanel.ScrollStep;220 var bodyElem = $cmsj('body');221 // Keep the positive step size for IE8/9 bug in RTL222 if (bodyElem.hasClass('IE8') || bodyElem.hasClass('IE9')) {223 scrollPanel.ForwardScrollStep = scrollPanel.ScrollStep;224 }225 }226 }227 if (scrollPanel.Container.is(':visible')) {228 // Display/Hide the forward scroller229 if (forwardScrollerFadeIn) {230 // Set the flag indicating whether the forward scroll is enabled231 scrollPanel.ForwardScrollEnabled = true;232 scrollPanel.ForwardScroller.fadeIn();233 }234 else {235 // Set the flag indicating whether the forward scroll is enabled236 scrollPanel.ForwardScrollEnabled = false;237 scrollPanel.ForwardScroller.fadeOut();238 }239 }240}241// Scroll back by predefined step242function spScrollBack(scrollContainer) {243 var scrollPanel = scrollPanels[scrollContainer];244 if (!scrollPanel.IsVerticalLayout) {245 if (scrollPanel.Container.scrollLeft() != 0) {246 var scroll = scrollPanel.Container.scrollLeft() - scrollPanel.ForwardScrollStep;247 scrollGlobalPosition = scroll;248 scrollPanel.Container.stop().animate({ scrollLeft: scroll }, 300, function () { scrollPanelInit(scrollContainer, false) });249 }250 }251 else {252 if (scrollPanel.Container.scrollTop() != 0) {253 var scroll = scrollPanel.Container.scrollTop() - scrollPanel.ForwardScrollStep;254 scrollGlobalPosition = scroll;255 scrollPanel.Container.stop().animate({ scrollTop: scroll }, 300, function () { scrollPanelInit(scrollContainer, false) });256 }257 }258}259// Scroll to the stored position manually260function spScrollSetPosition(scrollContainer) {261 window.setTimeout(function () {262 var scrollPanel = scrollPanels[scrollContainer];263 if (!scrollPanel.IsVerticalLayout) {264 var bodyElement = $cmsj('body');265 if (bodyElement.hasClass('Chrome') && scrollPanel.IsRTL) {266 var width = scrollPanel.ScrollAreaContainer.outerWidth();267 scrollPanel.Container.scrollLeft(width - scrollPanel.ForwardScrollStep);268 }269 else {270 scrollPanel.Container.scrollLeft(scrollGlobalPosition);271 }272 }273 else {274 scrollPanel.Container.scrollTop(scrollGlobalPosition);275 }276 scrollPanelInit(scrollContainer, false);277 }, 1);278}279// Scroll forward by predefined step280function spScrollForward(scrollContainer) {281 var scrollPanel = scrollPanels[scrollContainer];282 // Enable.disable forward scrolling according to the visibility of the last item283 spSetupForwardScroll(scrollContainer, false);284 if (!scrollPanel.IsVerticalLayout) {285 if (scrollPanel.ForwardScrollEnabled) {286 var scroll = scrollPanel.Container.scrollLeft() + scrollPanel.ForwardScrollStep;287 scrollGlobalPosition = scroll;288 scrollPanel.Container.stop().animate({ scrollLeft: scroll }, 300, function () { scrollPanelInit(scrollContainer, false) });289 }290 }291 else {292 if (scrollPanel.ForwardScrollEnabled) {293 var scroll = scrollPanel.Container.scrollTop() + scrollPanel.ForwardScrollStep;294 scrollGlobalPosition = scroll;295 scrollPanel.Container.stop().animate({ scrollTop: scroll }, 300, function () { scrollPanelInit(scrollContainer, false) });296 }297 }298 // Raise the external OnForwardScroll event299 if (scrollPanel.OnForwardScroll != null) {300 scrollPanel.OnForwardScroll(scrollPanel);301 }302}303// Convert the input string to int. Use defaultValue when the input string is not a number.304function spTryParseInt(str, defaultValue) {305 var retValue = defaultValue;306 if ((typeof (str) != 'undefined') && (str != null) && (str.length > 0)) {307 retValue = parseInt(str, 10);308 if (isNaN(retValue)) {309 retValue = defaultValue;310 }311 }312 return retValue;313}314// Disable selection extender315$cmsj.fn.extend({316 spDisableSelection: function () {317 return this.each(function () {318 this.onselectstart = function () { return false; };319 this.unselectable = "on";320 $cmsj(this)321 .css('user-select', 'none')322 .css('-o-user-select', 'none')323 .css('-moz-user-select', 'none')324 .css('-khtml-user-select', 'none')325 .css('-webkit-user-select', 'none');326 });327 }328});329// Reload all the scrollable panels330$cmsj(window).resize(function () {331 clearTimeout(scrollResizeTimer);332 scrollResizeTimer = setTimeout(function () { spRefreshScrollButtons(); }, 200);333});334// Refresh scroll panel button positions and set container height335function spRefreshScrollButtons() {336 for (var panel in scrollPanels) {337 var scrollPanel = scrollPanels[panel];338 // Proceed only real scroll panels (omit other jQuery system objects)339 if (typeof (scrollPanel.ScrollStep) === 'undefined') {340 continue;341 }342 if (scrollPanel.IsVerticalLayout && window.CKEDITOR) {343 // Refresh scroll panel button positions due to CKToolbar on the page344 // Get forward scroll position345 var forwardScrollerPosition = scrollPanel.ForwardScroller.position().top;346 if (!scrollPanel.ForwardScroller.is(":visible")) {347 scrollPanel.ForwardScroller.show();348 forwardScrollerPosition = scrollPanel.ForwardScroller.position().top;349 scrollPanel.ForwardScroller.hide();350 }351 // Set the container height according to the displayed area (context menus)352 if (!spIsAbsuluteOrFixed(scrollPanel.Container.parent())) {353 scrollPanel.Container.height(forwardScrollerPosition + scrollPanel.ForwardScroller.outerHeight() - scrollPanel.Container.position().top);354 }355 // Move the back scroll button to the corrected top position356 scrollPanel.BackwardScroller.css("top", scrollPanel.Container.position().top);357 }358 // Reload panel properties359 scrollPanelInit(panel, true);360 }361}362// Indicates whether the given object has absolute or fixed position (is context menu)363function spIsAbsuluteOrFixed(jObj) {364 var position = jObj.css('position');365 return ((position == 'absolute') || (position == 'fixed'));...

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jquery.lazyscrollloading.js

Source:jquery.lazyscrollloading.js Github

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1/**2 * @preserve jQuery Lazy Scroll Loading Plugin %Revision%3 * 4 * http://plugins.jquery.com/jQueryLazyScrollLoading/5 * https://code.google.com/p/jquerylazyscrollloading/6 * 7 * Apache License 2.0 - http://www.apache.org/licenses/LICENSE-2.08 * 9 * @author Dreamltf10 * @date %BuiltDate%11 * 12 * Depends: jquery.js (1.2+)13 */14(function($) {15 /* static variables */16 var PLUGIN_NAMESPACE = "LazyScrollLoading";17 var PLUGIN_LAZYIMAGE_ATTR = "data-lazyimg";18 /* default options */19 var defaultOptions = {20 "isDefaultLazyImageMode" : false,21 "lazyItemSelector" : null,22 "delay" : 500,23 "resetScrollBarPositionAfterEventTriggered" : true,24 /* callback function */25 "onCreate" : null,26 "onScroll" : null,27 "onLazyItemFirstVisible" : null,28 "onLazyItemVisible" : null,29 "onLazyItemInvisible" : null,30 "onScrollVertically" : null,31 "onScrollHorizontally" : null,32 "onScrollUp" : null,33 "onScrollDown" : null,34 "onScrollLeft" : null,35 "onScrollRight" : null,36 "onScrollToTop" : null,37 "onScrollToBottom" : null,38 "onScrollToLeftmost" : null,39 "onScrollToRightmost" : null40 };41 /* others variables */42 var userAgentStr = navigator.userAgent.toLowerCase();43 var isIE = /msie/.test(userAgentStr);44 var IEVersion = (isIE ? parseFloat((userAgentStr.match(/.*(?:rv|ie)[\/: ](.+?)([ \);]|$)/) || [])[1]) : -1);45 var scrollBarSize = 16;46 /**47 * Public Method48 */49 $.extend($.fn, {50 /**51 * Public : Main method52 * 53 * @param options54 * Object55 * @return jQuery56 */57 "lazyScrollLoading" : function(options) {58 options = $.extend({}, defaultOptions, options);59 /* correct options */60 if (options.isDefaultLazyImageMode && options.lazyItemSelector == null) {61 options.lazyItemSelector = "img[" + PLUGIN_LAZYIMAGE_ATTR + "]:not([src])";62 }63 /* starting */64 return this.each(function() {65 var $container = $(this);66 /* destroy */67 $container.destroyLazyScrollLoading();68 /* prepare options */69 $container.data("options." + PLUGIN_NAMESPACE, options);70 /* initialize */71 initializeLazyScrollLoading($container, options);72 /* trigger event */73 if (options.onCreate != null) {74 options.onCreate.apply($container[0]);75 }76 });77 },78 /**79 * Public : Get container's options80 * 81 * @return Object82 */83 "getLazyScrollLoadingOptions" : function() {84 return this.data("options." + PLUGIN_NAMESPACE);85 },86 /**87 * Public : Get container's scroll history88 * 89 * @return Object90 */91 "getLazyScrollLoadingScrollHistory" : function() {92 return this.data("scrollHistory." + PLUGIN_NAMESPACE);93 },94 /**95 * Public : Clear container's scroll history96 * 97 * @return jQuery98 */99 "clearLazyScrollLoadingScrollHistory" : function() {100 return this.removeData("scrollHistory." + PLUGIN_NAMESPACE);101 },102 /**103 * Public : Get container or lazyItem's viewport104 * 105 * @return Object106 */107 "getLazyScrollLoadingViewport" : function() {108 var $container = this;109 var containerViewport = $container.data("viewport." + PLUGIN_NAMESPACE);110 if (containerViewport == null) {111 var container = $container[0];112 var isRoot = isRootContainer(container);113 var $window = $(window);114 var $document = $(document);115 var $body = $(document.body);116 containerViewport = {117 "getOffset" : function() {118 return (isRoot ? $body.offset() : $container.offset());119 },120 "getScrollLeft" : function() {121 return (isRoot ? $window : $container).scrollLeft();122 },123 "getScrollTop" : function() {124 return (isRoot ? $window : $container).scrollTop();125 },126 "getScrollBindTarget" : function() {127 return (isRoot ? $window : $container);128 },129 "getWidth" : function(isOuter) {130 return (isRoot ? $window.width() : (isOuter ? $container.outerWidth() : $container.innerWidth()));131 },132 "getHeight" : function(isOuter) {133 return (isRoot ? $window.height() : (isOuter ? $container.outerHeight() : $container.innerHeight()));134 },135 "getScrollWidth" : function(includeScrollBarSize) {136 return (isRoot ? $document.width() : container.scrollWidth) + (includeScrollBarSize && this.isVerticalScrollBarVisible() ? scrollBarSize : 0);137 },138 "getScrollHeight" : function(includeScrollBarSize) {139 return (isRoot ? $document.height() : container.scrollHeight) + (includeScrollBarSize && this.isHorizontalScrollBarVisible() ? scrollBarSize : 0);140 },141 "getLeftPos" : function() {142 return (isRoot ? this.getScrollLeft() : this.getOffset().left);143 },144 "getTopPos" : function() {145 return (isRoot ? this.getScrollTop() : this.getOffset().top);146 },147 "getRightPos" : function() {148 return this.getLeftPos() + this.getWidth(true);149 },150 "getBottomPos" : function() {151 return this.getTopPos() + this.getHeight(true);152 },153 "isVerticalScrollBarVisible" : function() {154 return (this.getHeight(false) < this.getScrollHeight(false));155 },156 "isHorizontalScrollBarVisible" : function() {157 return (this.getWidth(false) < this.getScrollWidth(false));158 },159 "isVerticalScrollBarScrolling" : function() {160 if (!this.isVerticalScrollBarVisible()) {161 return false;162 }163 var containerScrollHistory = $container.getLazyScrollLoadingScrollHistory();164 return (containerScrollHistory != null && containerScrollHistory.scrollTop != this.getScrollTop());165 },166 "isHorizontalScrollBarScrolling" : function() {167 if (!this.isHorizontalScrollBarVisible()) {168 return false;169 }170 var containerScrollHistory = $container.getLazyScrollLoadingScrollHistory();171 return (containerScrollHistory != null && containerScrollHistory.scrollLeft != this.getScrollLeft());172 },173 "isScrollUp" : function() {174 if (!this.isVerticalScrollBarVisible()) {175 return false;176 }177 var containerScrollHistory = $container.getLazyScrollLoadingScrollHistory();178 return (containerScrollHistory != null && containerScrollHistory.scrollTop > this.getScrollTop());179 },180 "isScrollDown" : function() {181 if (!this.isVerticalScrollBarVisible()) {182 return false;183 }184 var containerScrollHistory = $container.getLazyScrollLoadingScrollHistory();185 return (containerScrollHistory != null && containerScrollHistory.scrollTop < this.getScrollTop());186 },187 "isScrollLeft" : function() {188 if (!this.isHorizontalScrollBarVisible()) {189 return false;190 }191 var containerScrollHistory = $container.getLazyScrollLoadingScrollHistory();192 return (containerScrollHistory != null && containerScrollHistory.scrollLeft > this.getScrollLeft());193 },194 "isScrollRight" : function() {195 if (!this.isHorizontalScrollBarVisible()) {196 return false;197 }198 var containerScrollHistory = $container.getLazyScrollLoadingScrollHistory();199 return (containerScrollHistory != null && containerScrollHistory.scrollLeft < this.getScrollLeft());200 },201 "isScrollToTop" : function() {202 if (!this.isVerticalScrollBarVisible()) {203 return false;204 }205 return (this.getScrollTop() <= 0);206 },207 "isScrollToBottom" : function() {208 if (!this.isVerticalScrollBarVisible()) {209 return false;210 }211 return (this.getScrollTop() + this.getHeight(true) >= this.getScrollHeight(true));212 },213 "isScrollToLeftmost" : function() {214 if (!this.isHorizontalScrollBarVisible()) {215 return false;216 }217 return (this.getScrollLeft() <= 0);218 },219 "isScrollToRightmost" : function() {220 if (!this.isHorizontalScrollBarVisible()) {221 return false;222 }223 return (this.getScrollLeft() + this.getWidth(true) >= this.getScrollWidth(true));224 }225 };226 }227 $container.data("viewport." + PLUGIN_NAMESPACE, containerViewport)228 return containerViewport;229 },230 /**231 * Public : Get container's cached lazy items232 * 233 * @param selector234 * String235 * @return jQuery236 */237 "getLazyScrollLoadingCachedLazyItems" : function(selector) {238 return this.pushStack($.map(this, function(container) {239 var $container = $(container);240 var options = $container.getLazyScrollLoadingOptions();241 var $lazyItems = $container.data("items." + PLUGIN_NAMESPACE);242 if (options != null && options.lazyItemSelector != null && $lazyItems == null) {243 /* cache lazy items if necessary */244 $lazyItems = $(options.lazyItemSelector, (isRootContainer(container) ? undefined : $container));245 $container.data("items." + PLUGIN_NAMESPACE, $lazyItems);246 }247 if ($lazyItems != null && selector != null) {248 $lazyItems = $lazyItems.filter(selector);249 }250 return ($lazyItems != null ? $lazyItems.get() : null);251 }));252 },253 /**254 * Public : Clear container's cached lazy items255 * 256 * @return jQuery257 */258 "clearLazyScrollLoadingCachedLazyItems" : function() {259 return this.removeData("items." + PLUGIN_NAMESPACE);260 },261 /**262 * Public : Refresh container263 * 264 * @return jQuery265 */266 "refreshLazyScrollLoading" : function() {267 return this.clearLazyScrollLoadingCachedLazyItems();268 },269 /**270 * Public : Destroy LazyScrollLoading271 * 272 * @return jQuery273 */274 "destroyLazyScrollLoading" : function() {275 /* yield event handler */276 return this.each(function() {277 var $container = $(this);278 /* reset event handler */279 $container.getLazyScrollLoadingViewport().getScrollBindTarget().unbind("scroll." + PLUGIN_NAMESPACE);280 /* clear cache */281 $container.getLazyScrollLoadingCachedLazyItems().removeData("isLoaded." + PLUGIN_NAMESPACE);282 $container.clearLazyScrollLoadingCachedLazyItems().clearLazyScrollLoadingScrollHistory().removeData("viewport." + PLUGIN_NAMESPACE).removeData("options." + PLUGIN_NAMESPACE);283 });284 },285 /**286 * Public : Is lazy item loaded287 * 288 * @return boolean289 */290 "isLazyScrollLoadingLazyItemLoaded" : function() {291 return this.data("isLoaded." + PLUGIN_NAMESPACE);292 },293 /**294 * Public : Is lazy item loading295 * 296 * @return boolean297 */298 "isLazyScrollLoadingLazyItemLoading" : function() {299 return this.data("isLoading." + PLUGIN_NAMESPACE);300 },301 /**302 * Public : Is lazy item visible303 * 304 * @param $container305 * jQuery306 * @return boolean307 */308 "isLazyScrollLoadingLazyItemVisible" : function($container) {309 var lazyItemViewport = this.getLazyScrollLoadingViewport();310 var containerViewport = $container.getLazyScrollLoadingViewport();311 /* calculate isVisible by position */312 return (lazyItemViewport.getBottomPos() > containerViewport.getTopPos() && lazyItemViewport.getLeftPos() < containerViewport.getRightPos() && lazyItemViewport.getTopPos() < containerViewport.getBottomPos() && lazyItemViewport.getRightPos() > containerViewport.getLeftPos());313 }314 });315 /**316 * Private : Is Root Container317 */318 function isRootContainer(container) {319 return (container == window || container == document || container == document.body);320 }321 /**322 * Private : Initialize LazyScrollLoading323 */324 function initializeLazyScrollLoading($container, options) {325 var containerViewport = $container.getLazyScrollLoadingViewport();326 var $scrollBindTarget = containerViewport.getScrollBindTarget();327 /* starting */328 var isTimerOn = false;329 var timer = null;330 $scrollBindTarget.bind("scroll." + PLUGIN_NAMESPACE, function(e) {331 if (options.delay <= 0) {332 fireOnScrollEvent(e, $container, options);333 } else if (!isTimerOn) {334 isTimerOn = true;335 if (timer != null) {336 clearTimeout(timer);337 }338 timer = setTimeout(function() {339 fireOnScrollEvent(e, $container, options);340 /* clear timer */341 clearTimeout(timer);342 isTimerOn = false;343 }, options.delay);344 }345 });346 /* on first window loaded, for visible element only */347 /* IE version < 9 would not be triggered the onscroll event */348 if ((containerViewport.getScrollTop() <= 0 && containerViewport.getScrollLeft() <= 0) || (isIE && IEVersion < 9)) {349 $scrollBindTarget.trigger("scroll." + PLUGIN_NAMESPACE);350 }351 }352 /**353 * Private : Fire OnScroll Event354 */355 function fireOnScrollEvent(e, $container, options) {356 var $lazyItems = $container.getLazyScrollLoadingCachedLazyItems();357 var lazyItemVisibleArray = [];358 var lazyItemFirstVisibleArray = [];359 var lazyItemInvisibleArray = [];360 if (options.lazyItemSelector != null && (options.isDefaultLazyImageMode || options.onLazyItemFirstVisible != null || options.onLazyItemVisible != null || options.onLazyItemInvisible != null)) {361 $lazyItems.each(function() {362 var $lazyItem = $(this);363 /* is lazy item visible */364 if ($lazyItem.isLazyScrollLoadingLazyItemVisible($container)) {365 $lazyItem.data("isLoading." + PLUGIN_NAMESPACE, true);366 lazyItemVisibleArray.push(this);367 if (!$lazyItem.isLazyScrollLoadingLazyItemLoaded()) {368 $lazyItem.data("isLoaded." + PLUGIN_NAMESPACE, true);369 lazyItemFirstVisibleArray.push(this);370 }371 } else if ($lazyItem.isLazyScrollLoadingLazyItemLoading()) {372 $lazyItem.removeData("isLoading." + PLUGIN_NAMESPACE);373 lazyItemInvisibleArray.push(this);374 }375 });376 /* lazy image mode */377 if (options.isDefaultLazyImageMode) {378 for (var i = 0, lazyItemFirstVisibleArraySize = lazyItemFirstVisibleArray.length; i < lazyItemFirstVisibleArraySize; i++) {379 var lazyImageItem = lazyItemFirstVisibleArray[i];380 lazyImageItem.src = lazyImageItem.getAttribute(PLUGIN_LAZYIMAGE_ATTR);381 }382 }383 }384 /* keep the old scrollTop and scrollLeft */385 var containerViewport = $container.getLazyScrollLoadingViewport();386 var scrollTop = containerViewport.getScrollTop();387 var scrollLeft = containerViewport.getScrollLeft();388 var newScrollHistory = {389 "scrollTop" : scrollTop,390 "scrollLeft" : scrollLeft391 };392 triggerCallbackFunctions(e, $container, options, $lazyItems, lazyItemVisibleArray, lazyItemFirstVisibleArray, lazyItemInvisibleArray);393 /* reset the scrollbar after event triggered */394 if (options.resetScrollBarPositionAfterEventTriggered) {395 $container.scrollTop(scrollTop);396 $container.scrollLeft(scrollLeft);397 }398 /* reset history to record previous scroll position */399 $container.data("scrollHistory." + PLUGIN_NAMESPACE, newScrollHistory);400 }401 /**402 * Private : Trigger Customized OnScroll Event403 */404 function triggerCallbackFunctions(e, $container, options, $lazyItems, lazyItemVisibleArray, lazyItemFirstVisibleArray, lazyItemInvisibleArray) {405 var container = $container[0];406 /* trigger callback */407 if (options.onScroll != null) {408 options.onScroll.apply(container, [ e ]);409 }410 if (options.onScrollVertically != null || options.onScrollUp != null || options.onScrollDown != null || options.onScrollToTop != null || options.onScrollToBottom != null || options.onScrollHorizontally != null || options.onScrollLeft != null || options.onScrollRight != null411 || options.onScrollToLeftmost != null || options.onScrollToRightmost != null) {412 var containerViewport = $container.getLazyScrollLoadingViewport();413 var defaultApplyParameter = [ e, $lazyItems ];414 if (containerViewport.isVerticalScrollBarScrolling()) {415 if (options.onScrollVertically != null) {416 options.onScrollVertically.apply(container, defaultApplyParameter);417 }418 if (options.onScrollUp != null && containerViewport.isScrollUp()) {419 options.onScrollUp.apply(container, defaultApplyParameter);420 }421 if (options.onScrollDown != null && containerViewport.isScrollDown()) {422 options.onScrollDown.apply(container, defaultApplyParameter);423 }424 if (options.onScrollToTop != null && containerViewport.isScrollToTop()) {425 options.onScrollToTop.apply(container, defaultApplyParameter);426 }427 if (options.onScrollToBottom != null && containerViewport.isScrollToBottom()) {428 options.onScrollToBottom.apply(container, defaultApplyParameter);429 }430 }431 if (containerViewport.isHorizontalScrollBarScrolling()) {432 if (options.onScrollHorizontally != null) {433 options.onScrollHorizontally.apply(container, defaultApplyParameter);434 }435 if (options.onScrollLeft != null && containerViewport.isScrollLeft()) {436 options.onScrollLeft.apply(container, defaultApplyParameter);437 }438 if (options.onScrollRight != null && containerViewport.isScrollRight()) {439 options.onScrollRight.apply(container, defaultApplyParameter);440 }441 if (options.onScrollToLeftmost != null && containerViewport.isScrollToLeftmost()) {442 options.onScrollToLeftmost.apply(container, defaultApplyParameter);443 }444 if (options.onScrollToRightmost != null && containerViewport.isScrollToRightmost()) {445 options.onScrollToRightmost.apply(container, defaultApplyParameter);446 }447 }448 }449 if (options.onLazyItemFirstVisible != null && lazyItemFirstVisibleArray.length > 0) {450 options.onLazyItemFirstVisible.apply(container, [ e, $lazyItems, $container.pushStack(lazyItemFirstVisibleArray) ]);451 }452 if (options.onLazyItemVisible != null && lazyItemVisibleArray.length > 0) {453 options.onLazyItemVisible.apply(container, [ e, $lazyItems, $container.pushStack(lazyItemVisibleArray) ]);454 }455 if (options.onLazyItemInvisible != null && lazyItemInvisibleArray.length > 0) {456 options.onLazyItemInvisible.apply(container, [ e, $lazyItems, $container.pushStack(lazyItemInvisibleArray) ]);457 }458 }...

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index.js

Source:index.js Github

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1'use strict';2exports.__esModule = true;3var _off = require('dom-helpers/events/off');4var _off2 = _interopRequireDefault(_off);5var _on = require('dom-helpers/events/on');6var _on2 = _interopRequireDefault(_on);7var _scrollLeft = require('dom-helpers/query/scrollLeft');8var _scrollLeft2 = _interopRequireDefault(_scrollLeft);9var _scrollTop = require('dom-helpers/query/scrollTop');10var _scrollTop2 = _interopRequireDefault(_scrollTop);11var _requestAnimationFrame = require('dom-helpers/util/requestAnimationFrame');12var _requestAnimationFrame2 = _interopRequireDefault(_requestAnimationFrame);13var _invariant = require('invariant');14var _invariant2 = _interopRequireDefault(_invariant);15var _utils = require('./utils');16function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }17function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } /* eslint-disable no-underscore-dangle */18// Try at most this many times to scroll, to avoid getting stuck.19var MAX_SCROLL_ATTEMPTS = 2;20var ScrollBehavior = function () {21 function ScrollBehavior(_ref) {22 var _this = this;23 var addTransitionHook = _ref.addTransitionHook,24 stateStorage = _ref.stateStorage,25 getCurrentLocation = _ref.getCurrentLocation,26 shouldUpdateScroll = _ref.shouldUpdateScroll;27 _classCallCheck(this, ScrollBehavior);28 this._restoreScrollRestoration = function () {29 /* istanbul ignore if: not supported by any browsers on Travis */30 if (_this._oldScrollRestoration) {31 try {32 window.history.scrollRestoration = _this._oldScrollRestoration;33 } catch (e) {34 /* silence */35 }36 }37 };38 this._onWindowScroll = function () {39 // It's possible that this scroll operation was triggered by what will be a40 // `POP` transition. Instead of updating the saved location immediately, we41 // have to enqueue the update, then potentially cancel it if we observe a42 // location update.43 if (!_this._saveWindowPositionHandle) {44 _this._saveWindowPositionHandle = (0, _requestAnimationFrame2.default)(_this._saveWindowPosition);45 }46 if (_this._windowScrollTarget) {47 var _windowScrollTarget = _this._windowScrollTarget,48 xTarget = _windowScrollTarget[0],49 yTarget = _windowScrollTarget[1];50 var x = (0, _scrollLeft2.default)(window);51 var y = (0, _scrollTop2.default)(window);52 if (x === xTarget && y === yTarget) {53 _this._windowScrollTarget = null;54 _this._cancelCheckWindowScroll();55 }56 }57 };58 this._saveWindowPosition = function () {59 _this._saveWindowPositionHandle = null;60 _this._savePosition(null, window);61 };62 this._checkWindowScrollPosition = function () {63 _this._checkWindowScrollHandle = null;64 // We can only get here if scrollTarget is set. Every code path that unsets65 // scroll target also cancels the handle to avoid calling this handler.66 // Still, check anyway just in case.67 /* istanbul ignore if: paranoid guard */68 if (!_this._windowScrollTarget) {69 return;70 }71 _this.scrollToTarget(window, _this._windowScrollTarget);72 ++_this._numWindowScrollAttempts;73 /* istanbul ignore if: paranoid guard */74 if (_this._numWindowScrollAttempts >= MAX_SCROLL_ATTEMPTS) {75 _this._windowScrollTarget = null;76 return;77 }78 _this._checkWindowScrollHandle = (0, _requestAnimationFrame2.default)(_this._checkWindowScrollPosition);79 };80 this._stateStorage = stateStorage;81 this._getCurrentLocation = getCurrentLocation;82 this._shouldUpdateScroll = shouldUpdateScroll;83 // This helps avoid some jankiness in fighting against the browser's84 // default scroll behavior on `POP` transitions.85 /* istanbul ignore else: Travis browsers all support this */86 if ('scrollRestoration' in window.history &&87 // Unfortunately, Safari on iOS freezes for 2-6s after the user swipes to88 // navigate through history with scrollRestoration being 'manual', so we89 // need to detect this browser and exclude it from the following code90 // until this bug is fixed by Apple.91 !(0, _utils.isMobileSafari)()) {92 this._oldScrollRestoration = window.history.scrollRestoration;93 try {94 window.history.scrollRestoration = 'manual';95 // Scroll restoration persists across page reloads. We want to reset96 // this to the original value, so that we can let the browser handle97 // restoring the initial scroll position on server-rendered pages.98 (0, _on2.default)(window, 'beforeunload', this._restoreScrollRestoration);99 } catch (e) {100 this._oldScrollRestoration = null;101 }102 } else {103 this._oldScrollRestoration = null;104 }105 this._saveWindowPositionHandle = null;106 this._checkWindowScrollHandle = null;107 this._windowScrollTarget = null;108 this._numWindowScrollAttempts = 0;109 this._scrollElements = {};110 // We have to listen to each window scroll update rather than to just111 // location updates, because some browsers will update scroll position112 // before emitting the location change.113 (0, _on2.default)(window, 'scroll', this._onWindowScroll);114 this._removeTransitionHook = addTransitionHook(function () {115 _requestAnimationFrame2.default.cancel(_this._saveWindowPositionHandle);116 _this._saveWindowPositionHandle = null;117 Object.keys(_this._scrollElements).forEach(function (key) {118 var scrollElement = _this._scrollElements[key];119 _requestAnimationFrame2.default.cancel(scrollElement.savePositionHandle);120 scrollElement.savePositionHandle = null;121 // It's fine to save element scroll positions here, though; the browser122 // won't modify them.123 _this._saveElementPosition(key);124 });125 });126 }127 ScrollBehavior.prototype.registerElement = function registerElement(key, element, shouldUpdateScroll, context) {128 var _this2 = this;129 !!this._scrollElements[key] ? process.env.NODE_ENV !== 'production' ? (0, _invariant2.default)(false, 'ScrollBehavior: There is already an element registered for `%s`.', key) : (0, _invariant2.default)(false) : void 0;130 var saveElementPosition = function saveElementPosition() {131 _this2._saveElementPosition(key);132 };133 var scrollElement = {134 element: element,135 shouldUpdateScroll: shouldUpdateScroll,136 savePositionHandle: null,137 onScroll: function onScroll() {138 if (!scrollElement.savePositionHandle) {139 scrollElement.savePositionHandle = (0, _requestAnimationFrame2.default)(saveElementPosition);140 }141 }142 };143 this._scrollElements[key] = scrollElement;144 (0, _on2.default)(element, 'scroll', scrollElement.onScroll);145 this._updateElementScroll(key, null, context);146 };147 ScrollBehavior.prototype.unregisterElement = function unregisterElement(key) {148 !this._scrollElements[key] ? process.env.NODE_ENV !== 'production' ? (0, _invariant2.default)(false, 'ScrollBehavior: There is no element registered for `%s`.', key) : (0, _invariant2.default)(false) : void 0;149 var _scrollElements$key = this._scrollElements[key],150 element = _scrollElements$key.element,151 onScroll = _scrollElements$key.onScroll,152 savePositionHandle = _scrollElements$key.savePositionHandle;153 (0, _off2.default)(element, 'scroll', onScroll);154 _requestAnimationFrame2.default.cancel(savePositionHandle);155 delete this._scrollElements[key];156 };157 ScrollBehavior.prototype.updateScroll = function updateScroll(prevContext, context) {158 var _this3 = this;159 this._updateWindowScroll(prevContext, context);160 Object.keys(this._scrollElements).forEach(function (key) {161 _this3._updateElementScroll(key, prevContext, context);162 });163 };164 ScrollBehavior.prototype.stop = function stop() {165 this._restoreScrollRestoration();166 (0, _off2.default)(window, 'scroll', this._onWindowScroll);167 this._cancelCheckWindowScroll();168 this._removeTransitionHook();169 };170 ScrollBehavior.prototype._cancelCheckWindowScroll = function _cancelCheckWindowScroll() {171 _requestAnimationFrame2.default.cancel(this._checkWindowScrollHandle);172 this._checkWindowScrollHandle = null;173 };174 ScrollBehavior.prototype._saveElementPosition = function _saveElementPosition(key) {175 var scrollElement = this._scrollElements[key];176 scrollElement.savePositionHandle = null;177 this._savePosition(key, scrollElement.element);178 };179 ScrollBehavior.prototype._savePosition = function _savePosition(key, element) {180 this._stateStorage.save(this._getCurrentLocation(), key, [(0, _scrollLeft2.default)(element), (0, _scrollTop2.default)(element)]);181 };182 ScrollBehavior.prototype._updateWindowScroll = function _updateWindowScroll(prevContext, context) {183 // Whatever we were doing before isn't relevant any more.184 this._cancelCheckWindowScroll();185 this._windowScrollTarget = this._getScrollTarget(null, this._shouldUpdateScroll, prevContext, context);186 // Updating the window scroll position is really flaky. Just trying to187 // scroll it isn't enough. Instead, try to scroll a few times until it188 // works.189 this._numWindowScrollAttempts = 0;190 this._checkWindowScrollPosition();191 };192 ScrollBehavior.prototype._updateElementScroll = function _updateElementScroll(key, prevContext, context) {193 var _scrollElements$key2 = this._scrollElements[key],194 element = _scrollElements$key2.element,195 shouldUpdateScroll = _scrollElements$key2.shouldUpdateScroll;196 var scrollTarget = this._getScrollTarget(key, shouldUpdateScroll, prevContext, context);197 if (!scrollTarget) {198 return;199 }200 // Unlike with the window, there shouldn't be any flakiness to deal with201 // here.202 this.scrollToTarget(element, scrollTarget);203 };204 ScrollBehavior.prototype._getDefaultScrollTarget = function _getDefaultScrollTarget(location) {205 var hash = location.hash;206 if (hash && hash !== '#') {207 return hash.charAt(0) === '#' ? hash.slice(1) : hash;208 }209 return [0, 0];210 };211 ScrollBehavior.prototype._getScrollTarget = function _getScrollTarget(key, shouldUpdateScroll, prevContext, context) {212 var scrollTarget = shouldUpdateScroll ? shouldUpdateScroll.call(this, prevContext, context) : true;213 if (!scrollTarget || Array.isArray(scrollTarget) || typeof scrollTarget === 'string') {214 return scrollTarget;215 }216 var location = this._getCurrentLocation();217 return this._getSavedScrollTarget(key, location) || this._getDefaultScrollTarget(location);218 };219 ScrollBehavior.prototype._getSavedScrollTarget = function _getSavedScrollTarget(key, location) {220 if (location.action === 'PUSH') {221 return null;222 }223 return this._stateStorage.read(location, key);224 };225 ScrollBehavior.prototype.scrollToTarget = function scrollToTarget(element, target) {226 if (typeof target === 'string') {227 var targetElement = document.getElementById(target) || document.getElementsByName(target)[0];228 if (targetElement) {229 targetElement.scrollIntoView();230 return;231 }232 // Fallback to scrolling to top when target fragment doesn't exist.233 target = [0, 0]; // eslint-disable-line no-param-reassign234 }235 var _target = target,236 left = _target[0],237 top = _target[1];238 (0, _scrollLeft2.default)(element, left);239 (0, _scrollTop2.default)(element, top);240 };241 return ScrollBehavior;242}();243exports.default = ScrollBehavior;...

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scroll.py

Source:scroll.py Github

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1"""2Key bindings, for scrolling up and down through pages.3This are separate bindings, because GNU readline doesn't have them, but4they are very useful for navigating through long multiline buffers, like in5Vi, Emacs, etc...6"""7from __future__ import unicode_literals8from prompt_toolkit.layout.utils import find_window_for_buffer_name9from six.moves import range10__all__ = (11 'scroll_forward',12 'scroll_backward',13 'scroll_half_page_up',14 'scroll_half_page_down',15 'scroll_one_line_up',16 'scroll_one_line_down',17)18def _current_window_for_event(event):19 """20 Return the `Window` for the currently focussed Buffer.21 """22 return find_window_for_buffer_name(event.cli, event.cli.current_buffer_name)23def scroll_forward(event, half=False):24 """25 Scroll window down.26 """27 w = _current_window_for_event(event)28 b = event.cli.current_buffer29 if w and w.render_info:30 info = w.render_info31 ui_content = info.ui_content32 # Height to scroll.33 scroll_height = info.window_height34 if half:35 scroll_height //= 236 # Calculate how many lines is equivalent to that vertical space.37 y = b.document.cursor_position_row + 138 height = 039 while y < ui_content.line_count:40 line_height = info.get_height_for_line(y)41 if height + line_height < scroll_height:42 height += line_height43 y += 144 else:45 break46 b.cursor_position = b.document.translate_row_col_to_index(y, 0)47def scroll_backward(event, half=False):48 """49 Scroll window up.50 """51 w = _current_window_for_event(event)52 b = event.cli.current_buffer53 if w and w.render_info:54 info = w.render_info55 # Height to scroll.56 scroll_height = info.window_height57 if half:58 scroll_height //= 259 # Calculate how many lines is equivalent to that vertical space.60 y = max(0, b.document.cursor_position_row - 1)61 height = 062 while y > 0:63 line_height = info.get_height_for_line(y)64 if height + line_height < scroll_height:65 height += line_height66 y -= 167 else:68 break69 b.cursor_position = b.document.translate_row_col_to_index(y, 0)70def scroll_half_page_down(event):71 """72 Same as ControlF, but only scroll half a page.73 """74 scroll_forward(event, half=True)75def scroll_half_page_up(event):76 """77 Same as ControlB, but only scroll half a page.78 """79 scroll_backward(event, half=True)80def scroll_one_line_down(event):81 """82 scroll_offset += 183 """84 w = find_window_for_buffer_name(event.cli, event.cli.current_buffer_name)85 b = event.cli.current_buffer86 if w:87 # When the cursor is at the top, move to the next line. (Otherwise, only scroll.)88 if w.render_info:89 info = w.render_info90 if w.vertical_scroll < info.content_height - info.window_height:91 if info.cursor_position.y <= info.configured_scroll_offsets.top:92 b.cursor_position += b.document.get_cursor_down_position()93 w.vertical_scroll += 194def scroll_one_line_up(event):95 """96 scroll_offset -= 197 """98 w = find_window_for_buffer_name(event.cli, event.cli.current_buffer_name)99 b = event.cli.current_buffer100 if w:101 # When the cursor is at the bottom, move to the previous line. (Otherwise, only scroll.)102 if w.render_info:103 info = w.render_info104 if w.vertical_scroll > 0:105 first_line_height = info.get_height_for_line(info.first_visible_line())106 cursor_up = info.cursor_position.y - (info.window_height - 1 - first_line_height -107 info.configured_scroll_offsets.bottom)108 # Move cursor up, as many steps as the height of the first line.109 # TODO: not entirely correct yet, in case of line wrapping and many long lines.110 for _ in range(max(0, cursor_up)):111 b.cursor_position += b.document.get_cursor_up_position()112 # Scroll window113 w.vertical_scroll -= 1114def scroll_page_down(event):115 """116 Scroll page down. (Prefer the cursor at the top of the page, after scrolling.)117 """118 w = _current_window_for_event(event)119 b = event.cli.current_buffer120 if w and w.render_info:121 # Scroll down one page.122 line_index = max(w.render_info.last_visible_line(), w.vertical_scroll + 1)123 w.vertical_scroll = line_index124 b.cursor_position = b.document.translate_row_col_to_index(line_index, 0)125 b.cursor_position += b.document.get_start_of_line_position(after_whitespace=True)126def scroll_page_up(event):127 """128 Scroll page up. (Prefer the cursor at the bottom of the page, after scrolling.)129 """130 w = _current_window_for_event(event)131 b = event.cli.current_buffer132 if w and w.render_info:133 # Put cursor at the first visible line. (But make sure that the cursor134 # moves at least one line up.)135 line_index = max(0, min(w.render_info.first_visible_line(),136 b.document.cursor_position_row - 1))137 b.cursor_position = b.document.translate_row_col_to_index(line_index, 0)138 b.cursor_position += b.document.get_start_of_line_position(after_whitespace=True)139 # Set the scroll offset. We can safely set it to zero; the Window will140 # make sure that it scrolls at least until the cursor becomes visible....

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scrollController.js

Source:scrollController.js Github

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1/**2 * @private3 */4IonicModule5.controller('$ionicScroll', [6 '$scope',7 'scrollViewOptions',8 '$timeout',9 '$window',10 '$location',11 '$document',12 '$ionicScrollDelegate',13 '$ionicHistory',14function($scope,15 scrollViewOptions,16 $timeout,17 $window,18 $location,19 $document,20 $ionicScrollDelegate,21 $ionicHistory) {22 var self = this;23 // for testing24 self.__timeout = $timeout;25 self._scrollViewOptions = scrollViewOptions; //for testing26 self.isNative = function() {27 return !!scrollViewOptions.nativeScrolling;28 };29 var element = self.element = scrollViewOptions.el;30 var $element = self.$element = jqLite(element);31 var scrollView;32 if (self.isNative()) {33 scrollView = self.scrollView = new ionic.views.ScrollNative(scrollViewOptions);34 } else {35 scrollView = self.scrollView = new ionic.views.Scroll(scrollViewOptions);36 }37 //Attach self to element as a controller so other directives can require this controller38 //through `require: '$ionicScroll'39 //Also attach to parent so that sibling elements can require this40 ($element.parent().length ? $element.parent() : $element)41 .data('$$ionicScrollController', self);42 var deregisterInstance = $ionicScrollDelegate._registerInstance(43 self, scrollViewOptions.delegateHandle, function() {44 return $ionicHistory.isActiveScope($scope);45 }46 );47 if (!isDefined(scrollViewOptions.bouncing)) {48 ionic.Platform.ready(function() {49 if (scrollView && scrollView.options) {50 scrollView.options.bouncing = true;51 if (ionic.Platform.isAndroid()) {52 // No bouncing by default on Android53 scrollView.options.bouncing = false;54 // Faster scroll decel55 scrollView.options.deceleration = 0.95;56 }57 }58 });59 }60 var resize = angular.bind(scrollView, scrollView.resize);61 angular.element($window).on('resize', resize);62 var scrollFunc = function(e) {63 var detail = (e.originalEvent || e).detail || {};64 $scope.$onScroll && $scope.$onScroll({65 event: e,66 scrollTop: detail.scrollTop || 0,67 scrollLeft: detail.scrollLeft || 068 });69 };70 $element.on('scroll', scrollFunc);71 $scope.$on('$destroy', function() {72 deregisterInstance();73 scrollView && scrollView.__cleanup && scrollView.__cleanup();74 angular.element($window).off('resize', resize);75 $element.off('scroll', scrollFunc);76 scrollView = self.scrollView = scrollViewOptions = self._scrollViewOptions = scrollViewOptions.el = self._scrollViewOptions.el = $element = self.$element = element = null;77 });78 $timeout(function() {79 scrollView && scrollView.run && scrollView.run();80 });81 self.getScrollView = function() {82 return scrollView;83 };84 self.getScrollPosition = function() {85 return scrollView.getValues();86 };87 self.resize = function() {88 return $timeout(resize, 0, false).then(function() {89 $element && $element.triggerHandler('scroll-resize');90 });91 };92 self.scrollTop = function(shouldAnimate) {93 self.resize().then(function() {94 if (!scrollView) {95 return;96 }97 scrollView.scrollTo(0, 0, !!shouldAnimate);98 });99 };100 self.scrollBottom = function(shouldAnimate) {101 self.resize().then(function() {102 if (!scrollView) {103 return;104 }105 var max = scrollView.getScrollMax();106 scrollView.scrollTo(max.left, max.top, !!shouldAnimate);107 });108 };109 self.scrollTo = function(left, top, shouldAnimate) {110 self.resize().then(function() {111 if (!scrollView) {112 return;113 }114 scrollView.scrollTo(left, top, !!shouldAnimate);115 });116 };117 self.zoomTo = function(zoom, shouldAnimate, originLeft, originTop) {118 self.resize().then(function() {119 if (!scrollView) {120 return;121 }122 scrollView.zoomTo(zoom, !!shouldAnimate, originLeft, originTop);123 });124 };125 self.zoomBy = function(zoom, shouldAnimate, originLeft, originTop) {126 self.resize().then(function() {127 if (!scrollView) {128 return;129 }130 scrollView.zoomBy(zoom, !!shouldAnimate, originLeft, originTop);131 });132 };133 self.scrollBy = function(left, top, shouldAnimate) {134 self.resize().then(function() {135 if (!scrollView) {136 return;137 }138 scrollView.scrollBy(left, top, !!shouldAnimate);139 });140 };141 self.anchorScroll = function(shouldAnimate) {142 self.resize().then(function() {143 if (!scrollView) {144 return;145 }146 var hash = $location.hash();147 var elm = hash && $document[0].getElementById(hash);148 if (!(hash && elm)) {149 scrollView.scrollTo(0, 0, !!shouldAnimate);150 return;151 }152 var curElm = elm;153 var scrollLeft = 0, scrollTop = 0;154 do {155 if (curElm !== null) scrollLeft += curElm.offsetLeft;156 if (curElm !== null) scrollTop += curElm.offsetTop;157 curElm = curElm.offsetParent;158 } while (curElm.attributes != self.element.attributes && curElm.offsetParent);159 scrollView.scrollTo(scrollLeft, scrollTop, !!shouldAnimate);160 });161 };162 self.freezeScroll = scrollView.freeze;163 self.freezeScrollShut = scrollView.freezeShut;164 self.freezeAllScrolls = function(shouldFreeze) {165 for (var i = 0; i < $ionicScrollDelegate._instances.length; i++) {166 $ionicScrollDelegate._instances[i].freezeScroll(shouldFreeze);167 }168 };169 /**170 * @private171 */172 self._setRefresher = function(refresherScope, refresherElement, refresherMethods) {173 self.refresher = refresherElement;174 var refresherHeight = self.refresher.clientHeight || 60;175 scrollView.activatePullToRefresh(176 refresherHeight,177 refresherMethods178 );179 };...

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SchedGui.py

Source:SchedGui.py Github

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1# SchedGui.py - Python extension for perf script, basic GUI code for2# traces drawing and overview.3#4# Copyright (C) 2010 by Frederic Weisbecker <fweisbec@gmail.com>5#6# This software is distributed under the terms of the GNU General7# Public License ("GPL") version 2 as published by the Free Software8# Foundation.9try:10 import wx11except ImportError:12 raise ImportError("You need to install the wxpython lib for this script")13class RootFrame(wx.Frame):14 Y_OFFSET = 10015 RECT_HEIGHT = 10016 RECT_SPACE = 5017 EVENT_MARKING_WIDTH = 518 def __init__(self, sched_tracer, title, parent = None, id = -1):19 wx.Frame.__init__(self, parent, id, title)20 (self.screen_width, self.screen_height) = wx.GetDisplaySize()21 self.screen_width -= 1022 self.screen_height -= 1023 self.zoom = 0.524 self.scroll_scale = 2025 self.sched_tracer = sched_tracer26 self.sched_tracer.set_root_win(self)27 (self.ts_start, self.ts_end) = sched_tracer.interval()28 self.update_width_virtual()29 self.nr_rects = sched_tracer.nr_rectangles() + 130 self.height_virtual = RootFrame.Y_OFFSET + (self.nr_rects * (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE))31 # whole window panel32 self.panel = wx.Panel(self, size=(self.screen_width, self.screen_height))33 # scrollable container34 self.scroll = wx.ScrolledWindow(self.panel)35 self.scroll.SetScrollbars(self.scroll_scale, self.scroll_scale, self.width_virtual / self.scroll_scale, self.height_virtual / self.scroll_scale)36 self.scroll.EnableScrolling(True, True)37 self.scroll.SetFocus()38 # scrollable drawing area39 self.scroll_panel = wx.Panel(self.scroll, size=(self.screen_width - 15, self.screen_height / 2))40 self.scroll_panel.Bind(wx.EVT_PAINT, self.on_paint)41 self.scroll_panel.Bind(wx.EVT_KEY_DOWN, self.on_key_press)42 self.scroll_panel.Bind(wx.EVT_LEFT_DOWN, self.on_mouse_down)43 self.scroll.Bind(wx.EVT_PAINT, self.on_paint)44 self.scroll.Bind(wx.EVT_KEY_DOWN, self.on_key_press)45 self.scroll.Bind(wx.EVT_LEFT_DOWN, self.on_mouse_down)46 self.scroll.Fit()47 self.Fit()48 self.scroll_panel.SetDimensions(-1, -1, self.width_virtual, self.height_virtual, wx.SIZE_USE_EXISTING)49 self.txt = None50 self.Show(True)51 def us_to_px(self, val):52 return val / (10 ** 3) * self.zoom53 def px_to_us(self, val):54 return (val / self.zoom) * (10 ** 3)55 def scroll_start(self):56 (x, y) = self.scroll.GetViewStart()57 return (x * self.scroll_scale, y * self.scroll_scale)58 def scroll_start_us(self):59 (x, y) = self.scroll_start()60 return self.px_to_us(x)61 def paint_rectangle_zone(self, nr, color, top_color, start, end):62 offset_px = self.us_to_px(start - self.ts_start)63 width_px = self.us_to_px(end - self.ts_start)64 offset_py = RootFrame.Y_OFFSET + (nr * (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE))65 width_py = RootFrame.RECT_HEIGHT66 dc = self.dc67 if top_color is not None:68 (r, g, b) = top_color69 top_color = wx.Colour(r, g, b)70 brush = wx.Brush(top_color, wx.SOLID)71 dc.SetBrush(brush)72 dc.DrawRectangle(offset_px, offset_py, width_px, RootFrame.EVENT_MARKING_WIDTH)73 width_py -= RootFrame.EVENT_MARKING_WIDTH74 offset_py += RootFrame.EVENT_MARKING_WIDTH75 (r ,g, b) = color76 color = wx.Colour(r, g, b)77 brush = wx.Brush(color, wx.SOLID)78 dc.SetBrush(brush)79 dc.DrawRectangle(offset_px, offset_py, width_px, width_py)80 def update_rectangles(self, dc, start, end):81 start += self.ts_start82 end += self.ts_start83 self.sched_tracer.fill_zone(start, end)84 def on_paint(self, event):85 dc = wx.PaintDC(self.scroll_panel)86 self.dc = dc87 width = min(self.width_virtual, self.screen_width)88 (x, y) = self.scroll_start()89 start = self.px_to_us(x)90 end = self.px_to_us(x + width)91 self.update_rectangles(dc, start, end)92 def rect_from_ypixel(self, y):93 y -= RootFrame.Y_OFFSET94 rect = y / (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE)95 height = y % (RootFrame.RECT_HEIGHT + RootFrame.RECT_SPACE)96 if rect < 0 or rect > self.nr_rects - 1 or height > RootFrame.RECT_HEIGHT:97 return -198 return rect99 def update_summary(self, txt):100 if self.txt:101 self.txt.Destroy()102 self.txt = wx.StaticText(self.panel, -1, txt, (0, (self.screen_height / 2) + 50))103 def on_mouse_down(self, event):104 (x, y) = event.GetPositionTuple()105 rect = self.rect_from_ypixel(y)106 if rect == -1:107 return108 t = self.px_to_us(x) + self.ts_start109 self.sched_tracer.mouse_down(rect, t)110 def update_width_virtual(self):111 self.width_virtual = self.us_to_px(self.ts_end - self.ts_start)112 def __zoom(self, x):113 self.update_width_virtual()114 (xpos, ypos) = self.scroll.GetViewStart()115 xpos = self.us_to_px(x) / self.scroll_scale116 self.scroll.SetScrollbars(self.scroll_scale, self.scroll_scale, self.width_virtual / self.scroll_scale, self.height_virtual / self.scroll_scale, xpos, ypos)117 self.Refresh()118 def zoom_in(self):119 x = self.scroll_start_us()120 self.zoom *= 2121 self.__zoom(x)122 def zoom_out(self):123 x = self.scroll_start_us()124 self.zoom /= 2125 self.__zoom(x)126 def on_key_press(self, event):127 key = event.GetRawKeyCode()128 if key == ord("+"):129 self.zoom_in()130 return131 if key == ord("-"):132 self.zoom_out()133 return134 key = event.GetKeyCode()135 (x, y) = self.scroll.GetViewStart()136 if key == wx.WXK_RIGHT:137 self.scroll.Scroll(x + 1, y)138 elif key == wx.WXK_LEFT:139 self.scroll.Scroll(x - 1, y)140 elif key == wx.WXK_DOWN:141 self.scroll.Scroll(x, y + 1)142 elif key == wx.WXK_UP:...

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jsScroll.js

Source:jsScroll.js Github

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1// ========================================2// JS简易滚动条3// ========================================4// 作者：http://www.cnblogs.com/zjfree5// 日期：2012-04-016// ========================================7var scrollMoveObj = null, scrollPageY = 0, scrollY = 0;8var scrollDivList = new Array();9// obj需要添加滚动条的对象 w滚动条宽度 className滚动条样式名称10// obj元素 必须指定高度，并设置overflow:hidden;11// 如要兼容IE6 必须给obj元素 指定 overflow:hidden;12function jsScroll(obj, w, className)13{14 if(typeof(obj) == 'string') {15 obj = document.getElementById(obj);16 }17 //当内容未超出现在高度时，不添加滚动条18 if(!obj || obj.scrollHeight <= obj.clientHeight || obj.clientHeight == 0) {19 return;20 }21 obj.scrollBarWidth = w||6;22 obj.style.overflow = 'hidden';23 obj.scrollBar = document.createElement('div');24 document.body.appendChild(obj.scrollBar);25 obj.parentNode.appendChild(obj.scrollBar);26 obj.scrollBarIndex = document.createElement('div');27 obj.scrollBar.appendChild(obj.scrollBarIndex);28 obj.scrollBar.style.position = 'absolute';29 obj.scrollBarIndex.style.position = 'absolute';30 obj.scrollBar.className = className || '';31 if(!className) {32 obj.scrollBar.style.backgroundColor = '#ddd';33 obj.scrollBarIndex.style.backgroundColor = '#aaa';34 }35 scrollDivList.push(obj);36 scrollResetSize(obj);37 //使用鼠标滚轮滚动38 obj.scrollBar.scrollDiv = obj;39 obj.scrollBarIndex.scrollDiv = obj;40 obj.onmousewheel = scrollMove;41 obj.scrollBar.onmousewheel = scrollMove;42 obj.scrollBarIndex.onmousewheel = scrollMove;43 //拖动滚动条滚动44 obj.scrollBarIndex.onmousedown = function(evt){45 evt = evt || event;46 scrollPageY = evt.clientY;47 scrollY = this.scrollDiv.scrollTop;48 isScrollMove = true;49 document.body.onselectstart = function(){return false};50 scrollMoveObj = this.scrollDiv;51 if(this.scrollDiv.scrollBar.className == '') {52 this.scrollDiv.scrollBarIndex.style.backgroundColor = '#888';53 }54 return false;55 }56}57//当页面大小发生变化时，重新计算滚动条位置58window.onresize = function(){59 for(var i=0; i<scrollDivList.length; i++) {60 scrollResetSize(scrollDivList[i]);61 }62}63//计算滚动条位置64function scrollResetSize(o) {65 if(o.scrollHeight <= o.clientHeight) {66 o.scrollTop = 0;67 o.scrollBar.style.display = 'none';68 } else {69 o.scrollBar.style.display = 'block';70 }71 var x=0, y=0;72 var p = o;73 while(p) {74 x += p.offsetLeft;75 y += p.offsetTop;76 p = p.offsetParent;77 }78 var borderTop = parseInt(o.style.borderTopWidth||0);79 var borderBottom = parseInt(o.style.borderBottomWidth||0);80 o.scrollBar.style.width = o.scrollBarWidth + 'px';81 o.scrollBar.style.height = o.clientHeight + 'px';82 o.scrollBar.style.top = y + borderTop + 'px';83 o.scrollBar.style.right = '0px';//滚动条的右边距84 o.scrollBarIndex.style.width = o.scrollBarWidth + 'px';85 var h =58;86 // //当滚动条滑块最小20个像素87 // if(h < 20) {88 // h = 20;89 // }90 o.scrollBarHeight = h;91 o.scrollBarIndex.style.height = '45px';//滚动条内部滑块的高度92 o.scrollBarIndex.style.left = '0px';93 setScrollPosition(o);94 // alert(h);95}96function setScrollPosition(o) {97 o.scrollBarIndex.style.top = (o.clientHeight - o.scrollBarHeight) * o.scrollTop / (o.scrollHeight - o.clientHeight) + 'px';98}99document.documentElement.onmousemove = function(evt){100 if(!scrollMoveObj)return;101 evt = evt || event;102 var per = (scrollMoveObj.scrollHeight - scrollMoveObj.clientHeight) / (scrollMoveObj.clientHeight - scrollMoveObj.scrollBarHeight)103 scrollMoveObj.scrollTop = scrollY - (scrollPageY - evt.clientY) * per;104 setScrollPosition(scrollMoveObj);105}106document.documentElement.onmouseup = function(evt){107 if(!scrollMoveObj)return;108 if(scrollMoveObj.scrollBar.className == '') {109 scrollMoveObj.scrollBarIndex.style.backgroundColor = '#aaa';110 }111 scrollMoveObj = null;112 document.body.onselectstart = function(){return true};113}114// 鼠标滚轮滚动115function scrollMove(evt){116 var div = this.scrollDiv || this;117 if(div.scrollHeight <= div.clientHeight) return true;118 evt = evt || event;119 var step = 20;120 if(evt.wheelDelta < 0) {121 if(div.scrollTop >= (div.scrollHeight - div.clientHeight)) return true;122 div.scrollTop += step;123 } else {124 if(div.scrollTop == 0) return true;125 div.scrollTop -= step;126 }127 setScrollPosition(div);128 return false;...

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1const { openBrowser, goto, scrollDown, scrollUp, closeBrowser } = require('taiko');2(async () => {3 try {4 await openBrowser();5 await scrollDown(100);6 await scrollUp(100);7 } catch (e) {8 console.error(e);9 } finally {10 await closeBrowser();11 }12})();13const { openBrowser, goto, scrollRight, closeBrowser } = require('taiko');14(async () => {15 try {16 await openBrowser();17 await scrollRight(100);18 } catch (e) {19 console.error(e);20 } finally {21 await closeBrowser();22 }23})();24const { openBrowser, goto, scrollLeft, closeBrowser } = require('taiko');25(async () => {26 try {27 await openBrowser();28 await scrollLeft(100);29 } catch (e) {30 console.error(e);31 } finally {32 await closeBrowser();33 }34})();35const { openBrowser, goto, scrollTo, closeBrowser } = require('taiko');36(async () => {37 try {38 await openBrowser();39 await scrollTo("Google");40 } catch (e) {41 console.error(e);42 } finally {43 await closeBrowser();44 }45})();46const { openBrowser, goto, switchTo, closeBrowser } = require('taiko');47(async () => {48 try {49 await openBrowser();50 await switchTo("Google");51 } catch (e)

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1const { openBrowser, goto, closeBrowser, scrollDown, scrollUp } = require('taiko');2(async () => {3 try {4 await openBrowser();5 await goto("google.com");6 await scrollDown(100);7 await scrollUp(100);8 } catch (e) {9 console.error(e);10 } finally {11 await closeBrowser();12 }13})();14const { openBrowser, goto, closeBrowser, scrollLeft } = require('taiko');15(async () => {16 try {17 await openBrowser();18 await goto("google.com");19 await scrollLeft(100);20 } catch (e) {21 console.error(e);22 } finally {23 await closeBrowser();24 }25})();26const { openBrowser, goto, closeBrowser, scrollRight } = require('taiko');27(async () => {28 try {29 await openBrowser();30 await goto("google.com");31 await scrollRight(100);32 } catch (e) {33 console.error(e);34 } finally {35 await closeBrowser();36 }37})();38const { openBrowser, goto, closeBrowser, scrollTo } = require('taiko');39(async () => {40 try {41 await openBrowser();42 await goto("google.com");43 await scrollTo('top');44 } catch (e) {45 console.error(e);46 } finally {47 await closeBrowser();48 }49})();50const { openBrowser, goto, closeBrowser, scrollTo } = require('taiko');51(async () => {52 try {53 await openBrowser();54 await goto("google.com");55 await scrollTo('bottom');56 } catch (e) {57 console.error(e);58 } finally {59 await closeBrowser();60 }61})();62const { openBrowser, goto, closeBrowser, scrollTo } = require('taiko');63(async () => {64 try {65 await openBrowser();66 await goto("google.com");67 await scrollTo('center');68 } catch (e) {69 console.error(e);70 } finally

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Using AI Code Generation

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1const { openBrowser, goto, click, textBox, write, toRightOf, button, scrollDown, scrollUp, closeBrowser } = require('taiko');2(async () => {3 try {4 await openBrowser({ headless: false });5 await write('taiko', into(textBox(toRightOf("Google Search"))));6 await click("Google Search");7 await scrollDown(200);8 await scrollUp(200);9 } catch (e) {10 console.error(e);11 } finally {12 await closeBrowser();13 }14})();15const { openBrowser, goto, click, textBox, write, toRightOf, button, scrollDown, scrollUp, closeBrowser } = require('taiko');16(async () => {17 try {18 await openBrowser({ headless: false });19 await write('taiko', into(textBox(toRightOf("Google Search"))));20 await click("Google Search");21 await scrollDown(200);22 await scrollUp(200);23 } catch (e) {24 console.error(e);25 } finally {26 await closeBrowser();27 }28})();29const { openBrowser, goto, click, textBox, write, toRightOf, button, scrollDown, scrollUp, closeBrowser } = require('taiko');30(async () => {31 try {32 await openBrowser({ headless: false });33 await write('taiko', into(textBox(toRightOf("Google Search"))));34 await click("Google Search");35 await scrollDown(200);36 await scrollUp(200);37 } catch (e) {38 console.error(e);39 } finally {40 await closeBrowser();41 }42})();43const { openBrowser, goto, click, textBox, write, toRightOf, button, scrollDown, scrollUp, closeBrowser } = require('taiko');44(async () => {45 try {46 await openBrowser({ headless: false });47 await write('taiko', into(textBox(toRightOf("Google Search"))));

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1const { scrollDown, scrollUp } = require('taiko');2scrollDown();3scrollUp();4scrollDown(100);5scrollUp(100);6scrollDown('text');7scrollUp('text');8scrollDown(100, 'text');9scrollUp(100, 'text');10scrollDown('#id');11scrollUp('#id');12scrollDown(100, '#id');13scrollUp(100, '#id');14scrollDown('css');15scrollUp('css');16scrollDown(100, 'css');17scrollUp(100, 'css');18scrollDown('xpath');19scrollUp('xpath');20scrollDown(100, 'xpath');21scrollUp(100, 'xpath');22scrollDown('link');23scrollUp('link');24scrollDown(100, 'link');25scrollUp(100, 'link');26scrollDown('button');27scrollUp('button');28scrollDown(100, 'button');29scrollUp(100, 'button');30scrollDown('input');31scrollUp('input');32scrollDown(100, 'input');33scrollUp(100, 'input');34scrollDown('inputField');35scrollUp('inputField');36scrollDown(100, 'inputField');37scrollUp(100, 'inputField');38scrollDown('inputField', 'value');39scrollUp('inputField', 'value');40scrollDown(100, 'inputField', 'value');41scrollUp(100, 'inputField', 'value');42scrollDown('inputField', 'value', { timeout: 1000 });43scrollUp('inputField', 'value', { timeout: 1000 });44scrollDown(100, 'inputField', 'value', { timeout: 1000 });45scrollUp(100, 'inputField', 'value', { timeout: 1000 });46scrollDown('inputField', 'value', { interval: 100 });47scrollUp('inputField', 'value', { interval: 100 });48scrollDown(100, 'inputField', 'value', { interval: 100 });49scrollUp(100, 'inputField', 'value', { interval: 100 });50scrollDown('inputField', 'value', { timeout: 1000, interval: 100 });51scrollUp('inputField', 'value', { timeout: 1000, interval: 100 });52scrollDown(100, 'inputField', 'value', { timeout: 1000, interval: 100 });53scrollUp(100, 'inputField', 'value',

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1const { scrollDown, scrollUp, scrollTo } = require('taiko');2scrollDown(10);3scrollUp(10);4scrollTo(10);5const { scrollDown, scrollUp, scrollTo } = require('taiko');6scrollDown(10);7scrollUp(10);8scrollTo(10);

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1scrollDown();2scrollUp();3scrollRight();4scrollLeft();5scrollDown();6scrollUp();7scrollRight();8scrollLeft();9scrollDownBy(100);10scrollUpBy(100);11scrollRightBy(100);12scrollLeftBy(100);13scrollTo("Login");14scrollToBottom();15scrollToTop();16scrollToLeft();17scrollToRight();18scrollToElement("Login");19scrollToView("Login");20scrollToCenter("Login");21scrollIntoView("Login");22scrollElementIntoView("Login");23scrollIntoViewCenter("Login");24scrollElementIntoViewCenter("Login");

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1const { scrollDown, scrollUp } = require('taiko');2scrollDown(5);3scrollUp(5);4const { scrollLeft } = require('taiko');5scrollLeft(5);6const { scrollRight } = require('taiko');7scrollRight(5);8const { scrollTo } = require('taiko');9scrollTo('text');10const { scrollToBottom } = require('taiko');11scrollToBottom();12const { scrollToTop } = require('taiko');13scrollToTop();14const { screenshot } = require('taiko');15screenshot({ path: 'screenshot.png' });16const { scrollUp } = require('taiko');17scrollUp(5);18const { select } = require('taiko');19select('option', 'dropdown');20const { selectCheckBox } = require('taiko');21selectCheckBox('checkbox');

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1const { openBrowser, goto, click, closeBrowser, scrollDown, scrollUp, screenshot, text, textBox, write, $, into, button, waitFor, link } = require('taiko');2(async () => {3 try {4 await openBrowser({ headless: false });5 await scrollDown(600);6 await scrollUp(600);7 await screenshot({ path: "./screenshot.png" });8 await click(link("API"));9 await click(link("Click"), { waitForNavigation: true });

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