front_end/timeline/TimelineUIUtils.js

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 * Copyright (C) 2012 Intel 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.
 */

/**
 * @constructor
 */
WebInspector.TimelineUIUtils = function() { }

WebInspector.TimelineUIUtils.prototype = {
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @return {boolean}
     */
    isBeginFrame: function(record)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @return {boolean}
     */
    isProgram: function(record)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {string} recordType
     * @return {boolean}
     */
    isCoalescable: function(recordType)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @return {boolean}
     */
    isEventDivider: function(record)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @return {?Object}
     */
    countersForRecord: function(record)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @return {?Object}
     */
    highlightQuadForRecord: function(record)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @return {string}
     */
    titleForRecord: function(record)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @param {!WebInspector.Linkifier} linkifier
     * @param {boolean} loadedFromFile
     * @return {?Node}
     */
    buildDetailsNode: function(record, linkifier, loadedFromFile)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @param {!WebInspector.TimelineModel} model
     * @param {!WebInspector.Linkifier} linkifier
     * @param {function(!DocumentFragment)} callback
     * @param {boolean} loadedFromFile
     */
    generateDetailsContent: function(record, model, linkifier, callback, loadedFromFile)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @return {!Element}
     */
    createBeginFrameDivider: function()
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {string} recordType
     * @param {string=} title
     * @return {!Element}
     */
    createEventDivider: function(recordType, title)
    {
        throw new Error("Not implemented.");
    },
    /**
     * @param {!WebInspector.TimelineModel.Record} record
     * @param {!RegExp} regExp
     * @return {boolean}
     */
    testContentMatching: function(record, regExp)
    {
        throw new Error("Not implemented.");
    }
}

/**
 * @return {!Object.<string, !WebInspector.TimelineCategory>}
 */
WebInspector.TimelineUIUtils.categories = function()
{
    if (WebInspector.TimelineUIUtils._categories)
        return WebInspector.TimelineUIUtils._categories;
    WebInspector.TimelineUIUtils._categories = {
        loading: new WebInspector.TimelineCategory("loading", WebInspector.UIString("Loading"), 0, "hsl(214, 53%, 58%)", "hsl(214, 67%, 90%)", "hsl(214, 67%, 74%)", "hsl(214, 67%, 66%)"),
        scripting: new WebInspector.TimelineCategory("scripting", WebInspector.UIString("Scripting"), 1, "hsl(43, 90%, 45%)", "hsl(43, 83%, 90%)", "hsl(43, 83%, 72%)", "hsl(43, 83%, 64%) "),
        rendering: new WebInspector.TimelineCategory("rendering", WebInspector.UIString("Rendering"), 2, "hsl(256, 50%, 60%)", "hsl(256, 67%, 90%)", "hsl(256, 67%, 76%)", "hsl(256, 67%, 70%)"),
        painting: new WebInspector.TimelineCategory("painting", WebInspector.UIString("Painting"), 2, "hsl(109, 33%, 47%)", "hsl(109, 33%, 90%)", "hsl(109, 33%, 64%)", "hsl(109, 33%, 55%)"),
        other: new WebInspector.TimelineCategory("other", WebInspector.UIString("Other"), -1, "hsl(0, 0%, 73%)", "hsl(0, 0%, 90%)", "hsl(0, 0%, 87%)", "hsl(0, 0%, 79%)"),
        idle: new WebInspector.TimelineCategory("idle", WebInspector.UIString("Idle"), -1, "hsl(0, 0%, 87%)", "hsl(0, 100%, 100%)", "hsl(0, 100%, 100%)", "hsl(0, 100%, 100%)")
    };
    return WebInspector.TimelineUIUtils._categories;
};

/**
 * @return {!Object.<string, !{title: string, category: !WebInspector.TimelineCategory}>}
 */
WebInspector.TimelineUIUtils._initRecordStyles = function()
{
    if (WebInspector.TimelineUIUtils._recordStylesMap)
        return WebInspector.TimelineUIUtils._recordStylesMap;

    var recordTypes = WebInspector.TimelineModel.RecordType;
    var categories = WebInspector.TimelineUIUtils.categories();

    var recordStyles = {};
    recordStyles[recordTypes.Root] = { title: "#root", category: categories["loading"] };
    recordStyles[recordTypes.Program] = { title: WebInspector.UIString("Other"), category: categories["other"] };
    recordStyles[recordTypes.EventDispatch] = { title: WebInspector.UIString("Event"), category: categories["scripting"] };
    recordStyles[recordTypes.BeginFrame] = { title: WebInspector.UIString("Frame Start"), category: categories["rendering"] };
    recordStyles[recordTypes.ScheduleStyleRecalculation] = { title: WebInspector.UIString("Schedule Style Recalculation"), category: categories["rendering"] };
    recordStyles[recordTypes.RecalculateStyles] = { title: WebInspector.UIString("Recalculate Style"), category: categories["rendering"] };
    recordStyles[recordTypes.InvalidateLayout] = { title: WebInspector.UIString("Invalidate Layout"), category: categories["rendering"] };
    recordStyles[recordTypes.Layout] = { title: WebInspector.UIString("Layout"), category: categories["rendering"] };
    recordStyles[recordTypes.UpdateLayerTree] = { title: WebInspector.UIString("Update layer tree"), category: categories["rendering"] };
    recordStyles[recordTypes.PaintSetup] = { title: WebInspector.UIString("Paint Setup"), category: categories["painting"] };
    recordStyles[recordTypes.Paint] = { title: WebInspector.UIString("Paint"), category: categories["painting"] };
    recordStyles[recordTypes.Rasterize] = { title: WebInspector.UIString("Paint"), category: categories["painting"] };
    recordStyles[recordTypes.ScrollLayer] = { title: WebInspector.UIString("Scroll"), category: categories["rendering"] };
    recordStyles[recordTypes.DecodeImage] = { title: WebInspector.UIString("Image Decode"), category: categories["painting"] };
    recordStyles[recordTypes.ResizeImage] = { title: WebInspector.UIString("Image Resize"), category: categories["painting"] };
    recordStyles[recordTypes.CompositeLayers] = { title: WebInspector.UIString("Composite Layers"), category: categories["painting"] };
    recordStyles[recordTypes.ParseHTML] = { title: WebInspector.UIString("Parse HTML"), category: categories["loading"] };
    recordStyles[recordTypes.TimerInstall] = { title: WebInspector.UIString("Install Timer"), category: categories["scripting"] };
    recordStyles[recordTypes.TimerRemove] = { title: WebInspector.UIString("Remove Timer"), category: categories["scripting"] };
    recordStyles[recordTypes.TimerFire] = { title: WebInspector.UIString("Timer Fired"), category: categories["scripting"] };
    recordStyles[recordTypes.XHRReadyStateChange] = { title: WebInspector.UIString("XHR Ready State Change"), category: categories["scripting"] };
    recordStyles[recordTypes.XHRLoad] = { title: WebInspector.UIString("XHR Load"), category: categories["scripting"] };
    recordStyles[recordTypes.EvaluateScript] = { title: WebInspector.UIString("Evaluate Script"), category: categories["scripting"] };
    recordStyles[recordTypes.ResourceSendRequest] = { title: WebInspector.UIString("Send Request"), category: categories["loading"] };
    recordStyles[recordTypes.ResourceReceiveResponse] = { title: WebInspector.UIString("Receive Response"), category: categories["loading"] };
    recordStyles[recordTypes.ResourceFinish] = { title: WebInspector.UIString("Finish Loading"), category: categories["loading"] };
    recordStyles[recordTypes.FunctionCall] = { title: WebInspector.UIString("Function Call"), category: categories["scripting"] };
    recordStyles[recordTypes.ResourceReceivedData] = { title: WebInspector.UIString("Receive Data"), category: categories["loading"] };
    recordStyles[recordTypes.GCEvent] = { title: WebInspector.UIString("GC Event"), category: categories["scripting"] };
    recordStyles[recordTypes.JSFrame] = { title: WebInspector.UIString("JS Frame"), category: categories["scripting"] };
    recordStyles[recordTypes.MarkDOMContent] = { title: WebInspector.UIString("DOMContentLoaded event"), category: categories["scripting"] };
    recordStyles[recordTypes.MarkLoad] = { title: WebInspector.UIString("Load event"), category: categories["scripting"] };
    recordStyles[recordTypes.MarkFirstPaint] = { title: WebInspector.UIString("First paint"), category: categories["painting"] };
    recordStyles[recordTypes.TimeStamp] = { title: WebInspector.UIString("Stamp"), category: categories["scripting"] };
    recordStyles[recordTypes.ConsoleTime] = { title: WebInspector.UIString("Console Time"), category: categories["scripting"] };
    recordStyles[recordTypes.RequestAnimationFrame] = { title: WebInspector.UIString("Request Animation Frame"), category: categories["scripting"] };
    recordStyles[recordTypes.CancelAnimationFrame] = { title: WebInspector.UIString("Cancel Animation Frame"), category: categories["scripting"] };
    recordStyles[recordTypes.FireAnimationFrame] = { title: WebInspector.UIString("Animation Frame Fired"), category: categories["scripting"] };
    recordStyles[recordTypes.WebSocketCreate] = { title: WebInspector.UIString("Create WebSocket"), category: categories["scripting"] };
    recordStyles[recordTypes.WebSocketSendHandshakeRequest] = { title: WebInspector.UIString("Send WebSocket Handshake"), category: categories["scripting"] };
    recordStyles[recordTypes.WebSocketReceiveHandshakeResponse] = { title: WebInspector.UIString("Receive WebSocket Handshake"), category: categories["scripting"] };
    recordStyles[recordTypes.WebSocketDestroy] = { title: WebInspector.UIString("Destroy WebSocket"), category: categories["scripting"] };
    recordStyles[recordTypes.EmbedderCallback] = { title: WebInspector.UIString("Embedder Callback"), category: categories["scripting"] };

    WebInspector.TimelineUIUtils._recordStylesMap = recordStyles;
    return recordStyles;
}

/**
 * @param {!WebInspector.TimelineModel.Record} record
 * @return {!{title: string, category: !WebInspector.TimelineCategory}}
 */
WebInspector.TimelineUIUtils.recordStyle = function(record)
{
    var type = record.type();
    var recordStyles = WebInspector.TimelineUIUtils._initRecordStyles();
    var result = recordStyles[type];
    if (!result) {
        result = {
            title: WebInspector.UIString("Unknown: %s", type),
            category: WebInspector.TimelineUIUtils.categories()["other"]
        };
        recordStyles[type] = result;
    }
    return result;
}

/**
 * @param {!WebInspector.TimelineModel} model
 * @param {!{name: string, tasks: !Array.<!{startTime: number, endTime: number}>, firstTaskIndex: number, lastTaskIndex: number}} info
 * @return {!Element}
 */
WebInspector.TimelineUIUtils.generateMainThreadBarPopupContent = function(model, info)
{
    var firstTaskIndex = info.firstTaskIndex;
    var lastTaskIndex = info.lastTaskIndex;
    var tasks = info.tasks;
    var messageCount = lastTaskIndex - firstTaskIndex + 1;
    var cpuTime = 0;

    for (var i = firstTaskIndex; i <= lastTaskIndex; ++i) {
        var task = tasks[i];
        cpuTime += task.endTime - task.startTime;
    }
    var startTime = tasks[firstTaskIndex].startTime;
    var endTime = tasks[lastTaskIndex].endTime;
    var duration = endTime - startTime;

    var contentHelper = new WebInspector.TimelinePopupContentHelper(info.name);
    var durationText = WebInspector.UIString("%s (at %s)", Number.millisToString(duration, true),
        Number.millisToString(startTime - model.minimumRecordTime(), true));
    contentHelper.appendTextRow(WebInspector.UIString("Duration"), durationText);
    contentHelper.appendTextRow(WebInspector.UIString("CPU time"), Number.millisToString(cpuTime, true));
    contentHelper.appendTextRow(WebInspector.UIString("Message Count"), messageCount);
    return contentHelper.contentTable();
}

/**
 * @param {!Object} total
 * @param {!Object} addend
 */
WebInspector.TimelineUIUtils.aggregateTimeByCategory = function(total, addend)
{
    for (var category in addend)
        total[category] = (total[category] || 0) + addend[category];
}

/**
 * @param {!Object} total
 * @param {!WebInspector.TimelineModel.Record} record
 */
WebInspector.TimelineUIUtils.aggregateTimeForRecord = function(total, record)
{
    var childrenTime = 0;
    var children = record.children();
    for (var i = 0; i < children.length; ++i) {
        WebInspector.TimelineUIUtils.aggregateTimeForRecord(total, children[i]);
        childrenTime += children[i].endTime() - children[i].startTime();
    }
    var categoryName = WebInspector.TimelineUIUtils.recordStyle(record).category.name;
    var ownTime = record.endTime() - record.startTime() - childrenTime;
    total[categoryName] = (total[categoryName] || 0) + ownTime;
}

/**
 * @param {!Object} aggregatedStats
 */
WebInspector.TimelineUIUtils._generateAggregatedInfo = function(aggregatedStats)
{
    var cell = document.createElement("span");
    cell.className = "timeline-aggregated-info";
    for (var index in aggregatedStats) {
        var label = document.createElement("div");
        label.className = "timeline-aggregated-category timeline-" + index;
        cell.appendChild(label);
        var text = document.createElement("span");
        text.textContent = Number.millisToString(aggregatedStats[index], true);
        cell.appendChild(text);
    }
    return cell;
}

/**
 * @param {!Object} aggregatedStats
 * @param {!WebInspector.TimelineCategory=} selfCategory
 * @param {number=} selfTime
 * @return {!Element}
 */
WebInspector.TimelineUIUtils.generatePieChart = function(aggregatedStats, selfCategory, selfTime)
{
    var element = document.createElement("div");
    element.className = "timeline-aggregated-info";

    var total = 0;
    for (var categoryName in aggregatedStats)
        total += aggregatedStats[categoryName];

    function formatter(value)
    {
        return Number.millisToString(value, true);
    }
    var pieChart = new WebInspector.PieChart(total, formatter);
    element.appendChild(pieChart.element);
    var footerElement = element.createChild("div", "timeline-aggregated-info-legend");

    // In case of self time, first add self, then children of the same category.
    if (selfCategory && selfTime) {
        // Self.
        pieChart.addSlice(selfTime, selfCategory.fillColorStop1);
        var rowElement = footerElement.createChild("div");
        rowElement.createChild("div", "timeline-aggregated-category timeline-" + selfCategory.name);
        rowElement.createTextChild(WebInspector.UIString("%s %s (Self)", formatter(selfTime), selfCategory.title));

        // Children of the same category.
        var categoryTime = aggregatedStats[selfCategory.name];
        var value = categoryTime - selfTime;
        if (value > 0) {
            pieChart.addSlice(value, selfCategory.fillColorStop0);
            rowElement = footerElement.createChild("div");
            rowElement.createChild("div", "timeline-aggregated-category timeline-" + selfCategory.name);
            rowElement.createTextChild(WebInspector.UIString("%s %s (Children)", formatter(value), selfCategory.title));
        }
    }

    // Add other categories.
    for (var categoryName in WebInspector.TimelineUIUtils.categories()) {
        var category = WebInspector.TimelineUIUtils.categories()[categoryName];
         if (category === selfCategory)
             continue;
         var value = aggregatedStats[category.name];
         if (!value)
             continue;
         pieChart.addSlice(value, category.fillColorStop0);
         var rowElement = footerElement.createChild("div");
         rowElement.createChild("div", "timeline-aggregated-category timeline-" + category.name);
         rowElement.createTextChild(WebInspector.UIString("%s %s", formatter(value), category.title));
    }
    return element;
}

/**
 * @param {!WebInspector.TimelineFrameModel} frameModel
 * @param {!WebInspector.TimelineFrame} frame
 * @return {!Element}
 */
WebInspector.TimelineUIUtils.generateDetailsContentForFrame = function(frameModel, frame)
{
    var contentHelper = new WebInspector.TimelineDetailsContentHelper(null, null, true);
    var durationInMillis = frame.endTime - frame.startTime;
    var durationText = WebInspector.UIString("%s (at %s)", Number.millisToString(frame.endTime - frame.startTime, true),
        Number.millisToString(frame.startTimeOffset, true));
    contentHelper.appendTextRow(WebInspector.UIString("Duration"), durationText);
    contentHelper.appendTextRow(WebInspector.UIString("FPS"), Math.floor(1000 / durationInMillis));
    contentHelper.appendTextRow(WebInspector.UIString("CPU time"), Number.millisToString(frame.cpuTime, true));
    contentHelper.appendElementRow(WebInspector.UIString("Aggregated Time"),
        WebInspector.TimelineUIUtils._generateAggregatedInfo(frame.timeByCategory));
    if (WebInspector.experimentsSettings.layersPanel.isEnabled() && frame.layerTree) {
        contentHelper.appendElementRow(WebInspector.UIString("Layer tree"),
                                       WebInspector.Linkifier.linkifyUsingRevealer(frame.layerTree, WebInspector.UIString("show")));
    }
    return contentHelper.element;
}

/**
 * @param {!CanvasRenderingContext2D} context
 * @param {number} width
 * @param {number} height
 * @param {string} color0
 * @param {string} color1
 * @param {string} color2
 * @return {!CanvasGradient}
 */
WebInspector.TimelineUIUtils.createFillStyle = function(context, width, height, color0, color1, color2)
{
    var gradient = context.createLinearGradient(0, 0, width, height);
    gradient.addColorStop(0, color0);
    gradient.addColorStop(0.25, color1);
    gradient.addColorStop(0.75, color1);
    gradient.addColorStop(1, color2);
    return gradient;
}

/**
 * @param {!CanvasRenderingContext2D} context
 * @param {number} width
 * @param {number} height
 * @param {!WebInspector.TimelineCategory} category
 * @return {!CanvasGradient}
 */
WebInspector.TimelineUIUtils.createFillStyleForCategory = function(context, width, height, category)
{
    return WebInspector.TimelineUIUtils.createFillStyle(context, width, height, category.fillColorStop0, category.fillColorStop1, category.borderColor);
}

/**
 * @param {!WebInspector.TimelineCategory} category
 * @return {string}
 */
WebInspector.TimelineUIUtils.createStyleRuleForCategory = function(category)
{
    var selector = ".timeline-category-" + category.name + " .timeline-graph-bar, " +
        ".panel.timeline .timeline-filters-header .filter-checkbox-filter.filter-checkbox-filter-" + category.name + " .checkbox-filter-checkbox, " +
        ".popover .timeline-" + category.name + ", " +
        ".timeline-details-view .timeline-" + category.name + ", " +
        ".timeline-category-" + category.name + " .timeline-tree-icon"

    return selector + " { background-image: linear-gradient(" +
       category.fillColorStop0 + ", " + category.fillColorStop1 + " 25%, " + category.fillColorStop1 + " 25%, " + category.fillColorStop1 + ");" +
       " border-color: " + category.borderColor +
       "}";
}

/**
 * @param {!Array.<number>} quad
 * @return {number}
 */
WebInspector.TimelineUIUtils._quadWidth = function(quad)
{
    return Math.round(Math.sqrt(Math.pow(quad[0] - quad[2], 2) + Math.pow(quad[1] - quad[3], 2)));
}

/**
 * @param {!Array.<number>} quad
 * @return {number}
 */
WebInspector.TimelineUIUtils._quadHeight = function(quad)
{
    return Math.round(Math.sqrt(Math.pow(quad[0] - quad[6], 2) + Math.pow(quad[1] - quad[7], 2)));
}

/**
 * @constructor
 * @extends {WebInspector.Object}
 * @param {string} name
 * @param {string} title
 * @param {number} overviewStripGroupIndex
 * @param {string} borderColor
 * @param {string} backgroundColor
 * @param {string} fillColorStop0
 * @param {string} fillColorStop1
 */
WebInspector.TimelineCategory = function(name, title, overviewStripGroupIndex, borderColor, backgroundColor, fillColorStop0, fillColorStop1)
{
    this.name = name;
    this.title = title;
    this.overviewStripGroupIndex = overviewStripGroupIndex;
    this.borderColor = borderColor;
    this.backgroundColor = backgroundColor;
    this.fillColorStop0 = fillColorStop0;
    this.fillColorStop1 = fillColorStop1;
    this.hidden = false;
}

WebInspector.TimelineCategory.Events = {
    VisibilityChanged: "VisibilityChanged"
};

WebInspector.TimelineCategory.prototype = {
    /**
     * @return {boolean}
     */
    get hidden()
    {
        return this._hidden;
    },

    set hidden(hidden)
    {
        this._hidden = hidden;
        this.dispatchEventToListeners(WebInspector.TimelineCategory.Events.VisibilityChanged, this);
    },

    __proto__: WebInspector.Object.prototype
}

/**
 * @constructor
 * @param {string} title
 */
WebInspector.TimelinePopupContentHelper = function(title)
{
    this._contentTable = document.createElement("table");
    var titleCell = this._createCell(WebInspector.UIString("%s - Details", title), "timeline-details-title");
    titleCell.colSpan = 2;
    var titleRow = document.createElement("tr");
    titleRow.appendChild(titleCell);
    this._contentTable.appendChild(titleRow);
}

WebInspector.TimelinePopupContentHelper.prototype = {
    /**
     * @return {!Element}
     */
    contentTable: function()
    {
        return this._contentTable;
    },

    /**
     * @param {string|number} content
     * @param {string=} styleName
     */
    _createCell: function(content, styleName)
    {
        var text = document.createElement("label");
        text.appendChild(document.createTextNode(content));
        var cell = document.createElement("td");
        cell.className = "timeline-details";
        if (styleName)
            cell.className += " " + styleName;
        cell.textContent = content;
        return cell;
    },

    /**
     * @param {string} title
     * @param {string|number} content
     */
    appendTextRow: function(title, content)
    {
        var row = document.createElement("tr");
        row.appendChild(this._createCell(title, "timeline-details-row-title"));
        row.appendChild(this._createCell(content, "timeline-details-row-data"));
        this._contentTable.appendChild(row);
    },

    /**
     * @param {string} title
     * @param {!Node|string} content
     */
    appendElementRow: function(title, content)
    {
        var row = document.createElement("tr");
        var titleCell = this._createCell(title, "timeline-details-row-title");
        row.appendChild(titleCell);
        var cell = document.createElement("td");
        cell.className = "details";
        if (content instanceof Node)
            cell.appendChild(content);
        else
            cell.createTextChild(content || "");
        row.appendChild(cell);
        this._contentTable.appendChild(row);
    }
}

/**
 * @constructor
 * @param {?WebInspector.Target} target
 * @param {?WebInspector.Linkifier} linkifier
 * @param {boolean} monospaceValues
 */
WebInspector.TimelineDetailsContentHelper = function(target, linkifier, monospaceValues)
{
    this._linkifier = linkifier;
    this._target = target;
    this.element = document.createElement("div");
    this.element.className = "timeline-details-view-block";
    this._monospaceValues = monospaceValues;
}

WebInspector.TimelineDetailsContentHelper.prototype = {
    /**
     * @param {string} title
     * @param {string|number|boolean} value
     */
    appendTextRow: function(title, value)
    {
        var rowElement = this.element.createChild("div", "timeline-details-view-row");
        rowElement.createChild("span", "timeline-details-view-row-title").textContent = WebInspector.UIString("%s: ", title);
        rowElement.createChild("span", "timeline-details-view-row-value" + (this._monospaceValues ? " monospace" : "")).textContent = value;
    },

    /**
     * @param {string} title
     * @param {!Node|string} content
     */
    appendElementRow: function(title, content)
    {
        var rowElement = this.element.createChild("div", "timeline-details-view-row");
        rowElement.createChild("span", "timeline-details-view-row-title").textContent = WebInspector.UIString("%s: ", title);
        var valueElement = rowElement.createChild("span", "timeline-details-view-row-details" + (this._monospaceValues ? " monospace" : ""));
        if (content instanceof Node)
            valueElement.appendChild(content);
        else
            valueElement.createTextChild(content || "");
    },

    /**
     * @param {string} title
     * @param {string} url
     * @param {number} line
     */
    appendLocationRow: function(title, url, line)
    {
        if (!this._linkifier || !this._target)
            return;
        this.appendElementRow(title, this._linkifier.linkifyLocation(this._target, url, line - 1) || "");
    },

    /**
     * @param {string} title
     * @param {!Array.<!ConsoleAgent.CallFrame>} stackTrace
     */
    appendStackTrace: function(title, stackTrace)
    {
        if (!this._linkifier || !this._target)
            return;

        var rowElement = this.element.createChild("div", "timeline-details-view-row");
        rowElement.createChild("span", "timeline-details-view-row-title").textContent = WebInspector.UIString("%s: ", title);
        var stackTraceElement = rowElement.createChild("div", "timeline-details-view-row-stack-trace monospace");

        for (var i = 0; i < stackTrace.length; ++i) {
            var stackFrame = stackTrace[i];
            var row = stackTraceElement.createChild("div");
            row.createTextChild(stackFrame.functionName || WebInspector.UIString("(anonymous function)"));
            row.createTextChild(" @ ");
            var urlElement = this._linkifier.linkifyLocation(this._target, stackFrame.url, stackFrame.lineNumber - 1);
            row.appendChild(urlElement);
        }
    }
}