Windows-4.7.4/src/3rdparty/webkit/WebCore/inspector/front-end/TimelineOverviewPane.js - platform/external/qt - Git at Google

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 WebInspector.TimelineOverviewPane = function(categories)
 {
     this.element = document.createElement("div");
     this.element.id = "timeline-overview-panel";

     this._categories = categories;
     this._overviewSidebarElement = document.createElement("div");
     this._overviewSidebarElement.id = "timeline-overview-sidebar";
     this.element.appendChild(this._overviewSidebarElement);

     var overviewTreeElement = document.createElement("ol");
     overviewTreeElement.className = "sidebar-tree";
     this._overviewSidebarElement.appendChild(overviewTreeElement);
     var sidebarTree = new TreeOutline(overviewTreeElement);

     var categoriesTreeElement = new WebInspector.SidebarSectionTreeElement(WebInspector.UIString("TIMELINES"), {}, true);
     categoriesTreeElement.expanded = true;
     sidebarTree.appendChild(categoriesTreeElement);
     for (var categoryName in this._categories) {
         var category = this._categories[categoryName];
         categoriesTreeElement.appendChild(new WebInspector.TimelineCategoryTreeElement(category, this._onCheckboxClicked.bind(this, category)));
     }

     this._overviewGrid = new WebInspector.TimelineGrid();
     this._overviewGrid.element.id = "timeline-overview-grid";
     this._overviewGrid.itemsGraphsElement.id = "timeline-overview-graphs";
     this.element.appendChild(this._overviewGrid.element);

     this._categoryGraphs = {};
     var i = 0;
     for (var category in this._categories) {
         var categoryGraph = new WebInspector.TimelineCategoryGraph(this._categories[category], i++ % 2);
         this._categoryGraphs[category] = categoryGraph;
         this._overviewGrid.itemsGraphsElement.appendChild(categoryGraph.graphElement);
     }
     this._overviewGrid.setScrollAndDividerTop(0, 0);

     this._overviewWindowElement = document.createElement("div");
     this._overviewWindowElement.id = "timeline-overview-window";
     this._overviewWindowElement.addEventListener("mousedown", this._dragWindow.bind(this), false);
     this._overviewGrid.element.appendChild(this._overviewWindowElement);

     this._leftResizeElement = document.createElement("div");
     this._leftResizeElement.className = "timeline-window-resizer";
     this._leftResizeElement.style.left = 0;
     this._overviewGrid.element.appendChild(this._leftResizeElement);
     this._leftResizeElement.addEventListener("mousedown", this._resizeWindow.bind(this, this._leftResizeElement), false);

     this._rightResizeElement = document.createElement("div");
     this._rightResizeElement.className = "timeline-window-resizer timeline-window-resizer-right";
     this._rightResizeElement.style.right = 0;
     this._overviewGrid.element.appendChild(this._rightResizeElement);
     this._rightResizeElement.addEventListener("mousedown", this._resizeWindow.bind(this, this._rightResizeElement), false);

     this._overviewCalculator = new WebInspector.TimelineOverviewCalculator();

     var separatorElement = document.createElement("div");
     separatorElement.id = "timeline-overview-separator";
     this.element.appendChild(separatorElement);

     this.windowLeft = 0.0;
     this.windowRight = 1.0;
 }


 WebInspector.TimelineOverviewPane.prototype = {
     _onCheckboxClicked: function (category, event) {
         if (event.target.checked)
             category.hidden = false;
         else
             category.hidden = true;
         this._categoryGraphs[category.name].dimmed = !event.target.checked;
         this.dispatchEventToListeners("filter changed");
     },

     update: function(records)
     {
         // Clear summary bars.
         var timelines = {};
         for (var category in this._categories) {
             timelines[category] = [];
             this._categoryGraphs[category].clearChunks();
         }

         function forAllRecords(recordsArray, callback)
         {
             if (!recordsArray)
                 return;
             for (var i = 0; i < recordsArray.length; ++i) {
                 callback(recordsArray[i]);
                 forAllRecords(recordsArray[i].children, callback);
             }
         }

         // Create sparse arrays with 101 cells each to fill with chunks for a given category.
         this._overviewCalculator.reset();
         forAllRecords(records, this._overviewCalculator.updateBoundaries.bind(this._overviewCalculator));

         function markTimeline(record)
         {
             var percentages = this._overviewCalculator.computeBarGraphPercentages(record);

             var end = Math.round(percentages.end);
             var categoryName = record.category.name;
             for (var j = Math.round(percentages.start); j <= end; ++j)
                 timelines[categoryName][j] = true;
         }
         forAllRecords(records, markTimeline.bind(this));

         // Convert sparse arrays to continuous segments, render graphs for each.
         for (var category in this._categories) {
             var timeline = timelines[category];
             window.timelineSaved = timeline;
             var chunkStart = -1;
             for (var j = 0; j < 101; ++j) {
                 if (timeline[j]) {
                     if (chunkStart === -1)
                         chunkStart = j;
                 } else {
                     if (chunkStart !== -1) {
                         this._categoryGraphs[category].addChunk(chunkStart, j);
                         chunkStart = -1;
                     }
                 }
             }
             if (chunkStart !== -1) {
                 this._categoryGraphs[category].addChunk(chunkStart, 100);
                 chunkStart = -1;
             }
         }
         this._overviewGrid.updateDividers(true, this._overviewCalculator);
     },

     setSidebarWidth: function(width)
     {
         this._overviewSidebarElement.style.width = width + "px";
     },

     updateMainViewWidth: function(width)
     {
         this._overviewGrid.element.style.left = width + "px";
     },

     reset: function()
     {
         this.windowLeft = 0.0;
         this.windowRight = 1.0;
         this._overviewWindowElement.style.left = "0%";
         this._overviewWindowElement.style.width = "100%";
         this._leftResizeElement.style.left = "0%";
         this._rightResizeElement.style.left = "100%";
         this._overviewCalculator.reset();
         this._overviewGrid.updateDividers(true, this._overviewCalculator);
     },

     _resizeWindow: function(resizeElement, event)
     {
         WebInspector.elementDragStart(resizeElement, this._windowResizeDragging.bind(this, resizeElement), this._endWindowDragging.bind(this), event, "col-resize");
     },

     _windowResizeDragging: function(resizeElement, event)
     {
         if (resizeElement === this._leftResizeElement)
             this._resizeWindowLeft(event.pageX - this._overviewGrid.element.offsetLeft);
         else
             this._resizeWindowRight(event.pageX - this._overviewGrid.element.offsetLeft);
         event.preventDefault();
     },

     _dragWindow: function(event)
     {
         WebInspector.elementDragStart(this._overviewWindowElement, this._windowDragging.bind(this, event.pageX,
             this._leftResizeElement.offsetLeft, this._rightResizeElement.offsetLeft), this._endWindowDragging.bind(this), event, "ew-resize");
     },

     _windowDragging: function(startX, windowLeft, windowRight, event)
     {
         var delta = event.pageX - startX;
         var start = windowLeft + delta;
         var end = windowRight + delta;
         var windowSize = windowRight - windowLeft;

         if (start < 0) {
             start = 0;
             end = windowSize;
         }

         if (end > this._overviewGrid.element.clientWidth) {
             end = this._overviewGrid.element.clientWidth;
             start = end - windowSize;
         }
         this._setWindowPosition(start, end);

         event.preventDefault();
     },

     _resizeWindowLeft: function(start)
     {
         // Glue to edge.
         if (start < 10)
             start = 0;
         this._setWindowPosition(start, null);
     },

     _resizeWindowRight: function(end)
     {
         // Glue to edge.
         if (end > this._overviewGrid.element.clientWidth - 10)
             end = this._overviewGrid.element.clientWidth;
         this._setWindowPosition(null, end);
     },

     _setWindowPosition: function(start, end)
     {
         if (typeof start === "number") {
             if (start > this._rightResizeElement.offsetLeft - 4)
                 start = this._rightResizeElement.offsetLeft - 4;

             this.windowLeft = start / this._overviewGrid.element.clientWidth;
             this._leftResizeElement.style.left = this.windowLeft * 100 + "%";
             this._overviewWindowElement.style.left = this.windowLeft * 100 + "%";
         }
         if (typeof end === "number") {
             if (end < this._leftResizeElement.offsetLeft + 12)
                 end = this._leftResizeElement.offsetLeft + 12;

             this.windowRight = end / this._overviewGrid.element.clientWidth;
             this._rightResizeElement.style.left = this.windowRight * 100 + "%";
         }
         this._overviewWindowElement.style.width = (this.windowRight - this.windowLeft) * 100 + "%";
         this.dispatchEventToListeners("window changed");
     },

     _endWindowDragging: function(event)
     {
         WebInspector.elementDragEnd(event);
     }
 }

 WebInspector.TimelineOverviewPane.prototype.__proto__ = WebInspector.Object.prototype;


 WebInspector.TimelineOverviewCalculator = function()
 {
     this._uiString = WebInspector.UIString.bind(WebInspector);
 }

 WebInspector.TimelineOverviewCalculator.prototype = {
     computeBarGraphPercentages: function(record)
     {
         var start = (record.startTime - this.minimumBoundary) / this.boundarySpan * 100;
         var end = (record.endTime - this.minimumBoundary) / this.boundarySpan * 100;
         return {start: start, end: end};
     },

     reset: function()
     {
         delete this.minimumBoundary;
         delete this.maximumBoundary;
     },

     updateBoundaries: function(record)
     {
         if (typeof this.minimumBoundary === "undefined" || record.startTime < this.minimumBoundary) {
             this.minimumBoundary = record.startTime;
             return true;
         }
         if (typeof this.maximumBoundary === "undefined" || record.endTime > this.maximumBoundary) {
             this.maximumBoundary = record.endTime;
             return true;
         }
         return false;
     },

     get boundarySpan()
     {
         return this.maximumBoundary - this.minimumBoundary;
     },

     formatValue: function(value)
     {
         return Number.secondsToString(value, this._uiString);
     }
 }


 WebInspector.TimelineCategoryTreeElement = function(category, onCheckboxClicked)
 {
     this._category = category;
     this._onCheckboxClicked = onCheckboxClicked;
     // Pass an empty title, the title gets made later in onattach.
     TreeElement.call(this, "", null, false);
 }

 WebInspector.TimelineCategoryTreeElement.prototype = {
     onattach: function()
     {
         this.listItemElement.removeChildren();
         this.listItemElement.addStyleClass("timeline-category-tree-item");
         this.listItemElement.addStyleClass("timeline-category-" + this._category.name);

         var label = document.createElement("label");

         var checkElement = document.createElement("input");
         checkElement.type = "checkbox";
         checkElement.className = "timeline-category-checkbox";
         checkElement.checked = true;
         checkElement.addEventListener("click", this._onCheckboxClicked);
         label.appendChild(checkElement);

         var typeElement = document.createElement("span");
         typeElement.className = "type";
         typeElement.textContent = this._category.title;
         label.appendChild(typeElement);

         this.listItemElement.appendChild(label);
     }
 }

 WebInspector.TimelineCategoryTreeElement.prototype.__proto__ = TreeElement.prototype;

 WebInspector.TimelineCategoryGraph = function(category, isEven)
 {
     this._category = category;

     this._graphElement = document.createElement("div");
     this._graphElement.className = "timeline-graph-side timeline-overview-graph-side" + (isEven ? " even" : "");

     this._barAreaElement = document.createElement("div");
     this._barAreaElement.className = "timeline-graph-bar-area timeline-category-" + category.name;
     this._graphElement.appendChild(this._barAreaElement);
 }

 WebInspector.TimelineCategoryGraph.prototype = {
     get graphElement()
     {
         return this._graphElement;
     },

     addChunk: function(start, end)
     {
         var chunk = document.createElement("div");
         chunk.className = "timeline-graph-bar";
         this._barAreaElement.appendChild(chunk);
         chunk.style.setProperty("left", start + "%");
         chunk.style.setProperty("width", (end - start) + "%");
     },

     clearChunks: function()
     {
         this._barAreaElement.removeChildren();
     },

     set dimmed(dimmed)
     {
         if (dimmed)
             this._barAreaElement.removeStyleClass("timeline-category-" + this._category.name);
         else
             this._barAreaElement.addStyleClass("timeline-category-" + this._category.name);
     }
 }
	/*
	* Copyright (C) 2009 Google Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	*
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following disclaimer
	* in the documentation and/or other materials provided with the
	* distribution.
	* * Neither the name of Google Inc. nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	WebInspector.TimelineOverviewPane = function(categories)
	{
	this.element = document.createElement("div");
	this.element.id = "timeline-overview-panel";

	this._categories = categories;
	this._overviewSidebarElement = document.createElement("div");
	this._overviewSidebarElement.id = "timeline-overview-sidebar";
	this.element.appendChild(this._overviewSidebarElement);

	var overviewTreeElement = document.createElement("ol");
	overviewTreeElement.className = "sidebar-tree";
	this._overviewSidebarElement.appendChild(overviewTreeElement);
	var sidebarTree = new TreeOutline(overviewTreeElement);

	var categoriesTreeElement = new WebInspector.SidebarSectionTreeElement(WebInspector.UIString("TIMELINES"), {}, true);
	categoriesTreeElement.expanded = true;
	sidebarTree.appendChild(categoriesTreeElement);
	for (var categoryName in this._categories) {
	var category = this._categories[categoryName];
	categoriesTreeElement.appendChild(new WebInspector.TimelineCategoryTreeElement(category, this._onCheckboxClicked.bind(this, category)));
	}

	this._overviewGrid = new WebInspector.TimelineGrid();
	this._overviewGrid.element.id = "timeline-overview-grid";
	this._overviewGrid.itemsGraphsElement.id = "timeline-overview-graphs";
	this.element.appendChild(this._overviewGrid.element);

	this._categoryGraphs = {};
	var i = 0;
	for (var category in this._categories) {
	var categoryGraph = new WebInspector.TimelineCategoryGraph(this._categories[category], i++ % 2);
	this._categoryGraphs[category] = categoryGraph;
	this._overviewGrid.itemsGraphsElement.appendChild(categoryGraph.graphElement);
	}
	this._overviewGrid.setScrollAndDividerTop(0, 0);

	this._overviewWindowElement = document.createElement("div");
	this._overviewWindowElement.id = "timeline-overview-window";
	this._overviewWindowElement.addEventListener("mousedown", this._dragWindow.bind(this), false);
	this._overviewGrid.element.appendChild(this._overviewWindowElement);

	this._leftResizeElement = document.createElement("div");
	this._leftResizeElement.className = "timeline-window-resizer";
	this._leftResizeElement.style.left = 0;
	this._overviewGrid.element.appendChild(this._leftResizeElement);
	this._leftResizeElement.addEventListener("mousedown", this._resizeWindow.bind(this, this._leftResizeElement), false);

	this._rightResizeElement = document.createElement("div");
	this._rightResizeElement.className = "timeline-window-resizer timeline-window-resizer-right";
	this._rightResizeElement.style.right = 0;
	this._overviewGrid.element.appendChild(this._rightResizeElement);
	this._rightResizeElement.addEventListener("mousedown", this._resizeWindow.bind(this, this._rightResizeElement), false);

	this._overviewCalculator = new WebInspector.TimelineOverviewCalculator();

	var separatorElement = document.createElement("div");
	separatorElement.id = "timeline-overview-separator";
	this.element.appendChild(separatorElement);

	this.windowLeft = 0.0;
	this.windowRight = 1.0;
	}


	WebInspector.TimelineOverviewPane.prototype = {
	_onCheckboxClicked: function (category, event) {
	if (event.target.checked)
	category.hidden = false;
	else
	category.hidden = true;
	this._categoryGraphs[category.name].dimmed = !event.target.checked;
	this.dispatchEventToListeners("filter changed");
	},

	update: function(records)
	{
	// Clear summary bars.
	var timelines = {};
	for (var category in this._categories) {
	timelines[category] = [];
	this._categoryGraphs[category].clearChunks();
	}

	function forAllRecords(recordsArray, callback)
	{
	if (!recordsArray)
	return;
	for (var i = 0; i < recordsArray.length; ++i) {
	callback(recordsArray[i]);
	forAllRecords(recordsArray[i].children, callback);
	}
	}

	// Create sparse arrays with 101 cells each to fill with chunks for a given category.
	this._overviewCalculator.reset();
	forAllRecords(records, this._overviewCalculator.updateBoundaries.bind(this._overviewCalculator));

	function markTimeline(record)
	{
	var percentages = this._overviewCalculator.computeBarGraphPercentages(record);

	var end = Math.round(percentages.end);
	var categoryName = record.category.name;
	for (var j = Math.round(percentages.start); j <= end; ++j)
	timelines[categoryName][j] = true;
	}
	forAllRecords(records, markTimeline.bind(this));

	// Convert sparse arrays to continuous segments, render graphs for each.
	for (var category in this._categories) {
	var timeline = timelines[category];
	window.timelineSaved = timeline;
	var chunkStart = -1;
	for (var j = 0; j < 101; ++j) {
	if (timeline[j]) {
	if (chunkStart === -1)
	chunkStart = j;
	} else {
	if (chunkStart !== -1) {
	this._categoryGraphs[category].addChunk(chunkStart, j);
	chunkStart = -1;
	}
	}
	}
	if (chunkStart !== -1) {
	this._categoryGraphs[category].addChunk(chunkStart, 100);
	chunkStart = -1;
	}
	}
	this._overviewGrid.updateDividers(true, this._overviewCalculator);
	},

	setSidebarWidth: function(width)
	{
	this._overviewSidebarElement.style.width = width + "px";
	},

	updateMainViewWidth: function(width)
	{
	this._overviewGrid.element.style.left = width + "px";
	},

	reset: function()
	{
	this.windowLeft = 0.0;
	this.windowRight = 1.0;
	this._overviewWindowElement.style.left = "0%";
	this._overviewWindowElement.style.width = "100%";
	this._leftResizeElement.style.left = "0%";
	this._rightResizeElement.style.left = "100%";
	this._overviewCalculator.reset();
	this._overviewGrid.updateDividers(true, this._overviewCalculator);
	},

	_resizeWindow: function(resizeElement, event)
	{
	WebInspector.elementDragStart(resizeElement, this._windowResizeDragging.bind(this, resizeElement), this._endWindowDragging.bind(this), event, "col-resize");
	},

	_windowResizeDragging: function(resizeElement, event)
	{
	if (resizeElement === this._leftResizeElement)
	this._resizeWindowLeft(event.pageX - this._overviewGrid.element.offsetLeft);
	else
	this._resizeWindowRight(event.pageX - this._overviewGrid.element.offsetLeft);
	event.preventDefault();
	},

	_dragWindow: function(event)
	{
	WebInspector.elementDragStart(this._overviewWindowElement, this._windowDragging.bind(this, event.pageX,
	this._leftResizeElement.offsetLeft, this._rightResizeElement.offsetLeft), this._endWindowDragging.bind(this), event, "ew-resize");
	},

	_windowDragging: function(startX, windowLeft, windowRight, event)
	{
	var delta = event.pageX - startX;
	var start = windowLeft + delta;
	var end = windowRight + delta;
	var windowSize = windowRight - windowLeft;

	if (start < 0) {
	start = 0;
	end = windowSize;
	}

	if (end > this._overviewGrid.element.clientWidth) {
	end = this._overviewGrid.element.clientWidth;
	start = end - windowSize;
	}
	this._setWindowPosition(start, end);

	event.preventDefault();
	},

	_resizeWindowLeft: function(start)
	{
	// Glue to edge.
	if (start < 10)
	start = 0;
	this._setWindowPosition(start, null);
	},

	_resizeWindowRight: function(end)
	{
	// Glue to edge.
	if (end > this._overviewGrid.element.clientWidth - 10)
	end = this._overviewGrid.element.clientWidth;
	this._setWindowPosition(null, end);
	},

	_setWindowPosition: function(start, end)
	{
	if (typeof start === "number") {
	if (start > this._rightResizeElement.offsetLeft - 4)
	start = this._rightResizeElement.offsetLeft - 4;

	this.windowLeft = start / this._overviewGrid.element.clientWidth;
	this._leftResizeElement.style.left = this.windowLeft * 100 + "%";
	this._overviewWindowElement.style.left = this.windowLeft * 100 + "%";
	}
	if (typeof end === "number") {
	if (end < this._leftResizeElement.offsetLeft + 12)
	end = this._leftResizeElement.offsetLeft + 12;

	this.windowRight = end / this._overviewGrid.element.clientWidth;
	this._rightResizeElement.style.left = this.windowRight * 100 + "%";
	}
	this._overviewWindowElement.style.width = (this.windowRight - this.windowLeft) * 100 + "%";
	this.dispatchEventToListeners("window changed");
	},

	_endWindowDragging: function(event)
	{
	WebInspector.elementDragEnd(event);
	}
	}

	WebInspector.TimelineOverviewPane.prototype.__proto__ = WebInspector.Object.prototype;


	WebInspector.TimelineOverviewCalculator = function()
	{
	this._uiString = WebInspector.UIString.bind(WebInspector);
	}

	WebInspector.TimelineOverviewCalculator.prototype = {
	computeBarGraphPercentages: function(record)
	{
	var start = (record.startTime - this.minimumBoundary) / this.boundarySpan * 100;
	var end = (record.endTime - this.minimumBoundary) / this.boundarySpan * 100;
	return {start: start, end: end};
	},

	reset: function()
	{
	delete this.minimumBoundary;
	delete this.maximumBoundary;
	},

	updateBoundaries: function(record)
	{
	if (typeof this.minimumBoundary === "undefined" \|\| record.startTime < this.minimumBoundary) {
	this.minimumBoundary = record.startTime;
	return true;
	}
	if (typeof this.maximumBoundary === "undefined" \|\| record.endTime > this.maximumBoundary) {
	this.maximumBoundary = record.endTime;
	return true;
	}
	return false;
	},

	get boundarySpan()
	{
	return this.maximumBoundary - this.minimumBoundary;
	},

	formatValue: function(value)
	{
	return Number.secondsToString(value, this._uiString);
	}
	}


	WebInspector.TimelineCategoryTreeElement = function(category, onCheckboxClicked)
	{
	this._category = category;
	this._onCheckboxClicked = onCheckboxClicked;
	// Pass an empty title, the title gets made later in onattach.
	TreeElement.call(this, "", null, false);
	}

	WebInspector.TimelineCategoryTreeElement.prototype = {
	onattach: function()
	{
	this.listItemElement.removeChildren();
	this.listItemElement.addStyleClass("timeline-category-tree-item");
	this.listItemElement.addStyleClass("timeline-category-" + this._category.name);

	var label = document.createElement("label");

	var checkElement = document.createElement("input");
	checkElement.type = "checkbox";
	checkElement.className = "timeline-category-checkbox";
	checkElement.checked = true;
	checkElement.addEventListener("click", this._onCheckboxClicked);
	label.appendChild(checkElement);

	var typeElement = document.createElement("span");
	typeElement.className = "type";
	typeElement.textContent = this._category.title;
	label.appendChild(typeElement);

	this.listItemElement.appendChild(label);
	}
	}

	WebInspector.TimelineCategoryTreeElement.prototype.__proto__ = TreeElement.prototype;

	WebInspector.TimelineCategoryGraph = function(category, isEven)
	{
	this._category = category;

	this._graphElement = document.createElement("div");
	this._graphElement.className = "timeline-graph-side timeline-overview-graph-side" + (isEven ? " even" : "");

	this._barAreaElement = document.createElement("div");
	this._barAreaElement.className = "timeline-graph-bar-area timeline-category-" + category.name;
	this._graphElement.appendChild(this._barAreaElement);
	}

	WebInspector.TimelineCategoryGraph.prototype = {
	get graphElement()
	{
	return this._graphElement;
	},

	addChunk: function(start, end)
	{
	var chunk = document.createElement("div");
	chunk.className = "timeline-graph-bar";
	this._barAreaElement.appendChild(chunk);
	chunk.style.setProperty("left", start + "%");
	chunk.style.setProperty("width", (end - start) + "%");
	},

	clearChunks: function()
	{
	this._barAreaElement.removeChildren();
	},

	set dimmed(dimmed)
	{
	if (dimmed)
	this._barAreaElement.removeStyleClass("timeline-category-" + this._category.name);
	else
	this._barAreaElement.addStyleClass("timeline-category-" + this._category.name);
	}
	}