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/*
* Copyright (C) 2016 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.MemoryTimelineOverviewGraph = class MemoryTimelineOverviewGraph extends WebInspector.TimelineOverviewGraph
{
constructor(timeline, timelineOverview)
{
super(timelineOverview);
this.element.classList.add("memory");
this._memoryTimeline = timeline;
this._memoryTimeline.addEventListener(WebInspector.Timeline.Event.RecordAdded, this._memoryTimelineRecordAdded, this);
this._didInitializeCategories = false;
let size = new WebInspector.Size(0, this.height);
this._chart = new WebInspector.StackedLineChart(size);
this.element.appendChild(this._chart.element);
this._legendElement = this.element.appendChild(document.createElement("div"));
this._legendElement.classList.add("legend");
this.reset();
}
// Protected
get height()
{
return 108;
}
reset()
{
super.reset();
this._maxSize = 0;
this._updateLegend();
this._chart.clear();
this._chart.needsLayout();
}
layout()
{
this._updateLegend();
this._chart.clear();
if (!this._didInitializeCategories)
return;
let graphWidth = this.timelineOverview.scrollContainerWidth;
if (isNaN(graphWidth))
return;
if (this._chart.size.width !== graphWidth || this._chart.size.height !== this.height)
this._chart.size = new WebInspector.Size(graphWidth, this.height);
let graphStartTime = this.startTime;
let graphEndTime = this.endTime;
let graphCurrentTime = this.currentTime;
let visibleEndTime = Math.min(this.endTime, this.currentTime);
let visibleRecords = this._visibleRecords(graphStartTime, visibleEndTime);
if (!visibleRecords.length)
return;
let secondsPerPixel = this.timelineOverview.secondsPerPixel;
let maxCapacity = this._maxSize * 1.05; // Add 5% for padding.
function xScale(time) {
return (time - graphStartTime) / secondsPerPixel;
}
let height = this.height;
function yScale(size) {
return height - ((size / maxCapacity) * height);
}
function pointSetForRecord(record) {
let size = 0;
let ys = [];
for (let i = 0; i < record.categories.length; ++i) {
size += record.categories[i].size;
ys[i] = yScale(size);
}
return ys;
}
// Extend the first record to the start so it doesn't look like we originate at zero size.
if (visibleRecords[0] === this._memoryTimeline.records[0])
this._chart.addPointSet(0, pointSetForRecord(visibleRecords[0]));
// Points for visible records.
for (let record of visibleRecords) {
let x = xScale(record.startTime);
this._chart.addPointSet(x, pointSetForRecord(record));
}
// Extend the last value to current / end time.
let lastRecord = visibleRecords.lastValue;
let x = Math.floor(xScale(visibleEndTime));
this._chart.addPointSet(x, pointSetForRecord(lastRecord));
this._chart.updateLayout();
}
// Private
_updateLegend()
{
if (!this._maxSize) {
this._legendElement.hidden = true;
this._legendElement.textContent = "";
} else {
this._legendElement.hidden = false;
this._legendElement.textContent = WebInspector.UIString("Maximum Size: %s").format(Number.bytesToString(this._maxSize));
}
}
_visibleRecords(startTime, endTime)
{
let records = this._memoryTimeline.records;
let lowerIndex = records.lowerBound(startTime, (time, record) => time - record.timestamp);
let upperIndex = records.upperBound(endTime, (time, record) => time - record.timestamp);
// Include the record right before the start time in case it extends into this range.
if (lowerIndex > 0)
lowerIndex--;
// FIXME: <https://webkit.org/b/153759> Web Inspector: Memory Timelines should better extend to future data
// if (upperIndex !== records.length)
// upperIndex++;
return records.slice(lowerIndex, upperIndex);
}
_memoryTimelineRecordAdded(event)
{
let memoryTimelineRecord = event.data.record;
this._maxSize = Math.max(this._maxSize, memoryTimelineRecord.totalSize);
if (!this._didInitializeCategories) {
this._didInitializeCategories = true;
let types = [];
for (let category of memoryTimelineRecord.categories)
types.push(category.type);
this._chart.initializeSections(types);
}
this.needsLayout();
}
};
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