blob: 729696f041c162ff97cfb092497bbd15abf9ffb9 [file] [log] [blame]
/*
* Copyright (C) 2013, 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.
*/
// FIXME: TimelineManager lacks advanced multi-target support. (Instruments/Profilers per-target)
WI.TimelineManager = class TimelineManager extends WI.Object
{
constructor()
{
super();
this._enabled = false;
WI.Frame.addEventListener(WI.Frame.Event.ProvisionalLoadStarted, this._provisionalLoadStarted, this);
WI.Frame.addEventListener(WI.Frame.Event.MainResourceDidChange, this._mainResourceDidChange, this);
this._enabledTimelineTypesSetting = new WI.Setting("enabled-instrument-types", WI.TimelineManager.defaultTimelineTypes());
this._capturingState = TimelineManager.CapturingState.Inactive;
this._capturingInstrumentCount = 0;
this._capturingStartTime = NaN;
this._capturingEndTime = NaN;
this._initiatedByBackendStart = false;
this._initiatedByBackendStop = false;
this._isCapturingPageReload = false;
this._autoCaptureOnPageLoad = false;
this._mainResourceForAutoCapturing = null;
this._shouldSetAutoCapturingMainResource = false;
this._transitioningPageTarget = false;
this._webTimelineScriptRecordsExpectingScriptProfilerEvents = null;
this._scriptProfilerRecords = null;
this._boundStopCapturing = this.stopCapturing.bind(this);
this._stopCapturingTimeout = undefined;
this._deadTimeTimeout = undefined;
this._lastDeadTimeTickle = 0;
this.reset();
}
// Agent
get domains() { return ["Timeline"]; }
activateExtraDomain(domain)
{
console.assert(domain === "Timeline");
for (let target of WI.targets)
this.initializeTarget(target);
}
// Target
initializeTarget(target)
{
if (!this._enabled)
return;
if (target.hasDomain("Timeline")) {
// COMPATIBILITY (iOS 13): Timeline.enable did not exist yet.
if (target.hasCommand("Timeline.enable"))
target.TimelineAgent.enable();
this._updateAutoCaptureInstruments([target]);
// COMPATIBILITY (iOS 9): Timeline.setAutoCaptureEnabled did not exist.
if (target.hasCommand("Timeline.setAutoCaptureEnabled"))
target.TimelineAgent.setAutoCaptureEnabled(this._autoCaptureOnPageLoad);
}
}
transitionPageTarget()
{
this._transitioningPageTarget = true;
}
// Static
static defaultTimelineTypes()
{
if (WI.sharedApp.debuggableType === WI.DebuggableType.JavaScript) {
let defaultTypes = [WI.TimelineRecord.Type.Script];
if (WI.HeapAllocationsInstrument.supported())
defaultTypes.push(WI.TimelineRecord.Type.HeapAllocations);
return defaultTypes;
}
if (WI.sharedApp.debuggableType === WI.DebuggableType.ServiceWorker) {
// FIXME: Support Network Timeline in ServiceWorker.
let defaultTypes = [WI.TimelineRecord.Type.Script];
if (WI.HeapAllocationsInstrument.supported())
defaultTypes.push(WI.TimelineRecord.Type.HeapAllocations);
return defaultTypes;
}
let defaultTypes = [
WI.TimelineRecord.Type.Network,
WI.TimelineRecord.Type.Layout,
WI.TimelineRecord.Type.Script,
];
if (WI.CPUInstrument.supported())
defaultTypes.push(WI.TimelineRecord.Type.CPU);
if (WI.FPSInstrument.supported())
defaultTypes.push(WI.TimelineRecord.Type.RenderingFrame);
return defaultTypes;
}
static availableTimelineTypes()
{
let types = WI.TimelineManager.defaultTimelineTypes();
if (WI.sharedApp.debuggableType === WI.DebuggableType.JavaScript || WI.sharedApp.debuggableType === WI.DebuggableType.ServiceWorker)
return types;
if (WI.MemoryInstrument.supported())
types.push(WI.TimelineRecord.Type.Memory);
if (WI.HeapAllocationsInstrument.supported())
types.push(WI.TimelineRecord.Type.HeapAllocations);
if (WI.MediaInstrument.supported()) {
let insertionIndex = types.indexOf(WI.TimelineRecord.Type.Layout) + 1;
types.insertAtIndex(WI.TimelineRecord.Type.Media, insertionIndex || types.length);
}
return types;
}
static synthesizeImportError(message)
{
message = WI.UIString("Timeline Recording Import Error: %s").format(message);
if (window.InspectorTest) {
console.error(message);
return;
}
let consoleMessage = new WI.ConsoleMessage(WI.mainTarget, WI.ConsoleMessage.MessageSource.Other, WI.ConsoleMessage.MessageLevel.Error, message);
consoleMessage.shouldRevealConsole = true;
WI.consoleLogViewController.appendConsoleMessage(consoleMessage);
}
// Public
get capturingState() { return this._capturingState; }
reset()
{
if (this._capturingState === TimelineManager.CapturingState.Starting || this._capturingState === TimelineManager.CapturingState.Active)
this.stopCapturing();
this._recordings = [];
this._activeRecording = null;
this._nextRecordingIdentifier = 1;
this._loadNewRecording();
}
// The current recording that new timeline records will be appended to, if any.
get activeRecording()
{
console.assert(this._activeRecording || !this.isCapturing());
return this._activeRecording;
}
get recordings()
{
return this._recordings.slice();
}
get autoCaptureOnPageLoad()
{
return this._autoCaptureOnPageLoad;
}
set autoCaptureOnPageLoad(autoCapture)
{
console.assert(this._enabled);
autoCapture = !!autoCapture;
if (this._autoCaptureOnPageLoad === autoCapture)
return;
this._autoCaptureOnPageLoad = autoCapture;
for (let target of WI.targets) {
// COMPATIBILITY (iOS 9): Timeline.setAutoCaptureEnabled did not exist yet.
if (target.hasCommand("Timeline.setAutoCaptureEnabled"))
target.TimelineAgent.setAutoCaptureEnabled(this._autoCaptureOnPageLoad);
}
}
get enabledTimelineTypes()
{
let availableTimelineTypes = WI.TimelineManager.availableTimelineTypes();
return this._enabledTimelineTypesSetting.value.filter((type) => availableTimelineTypes.includes(type));
}
set enabledTimelineTypes(x)
{
this._enabledTimelineTypesSetting.value = x || [];
this._updateAutoCaptureInstruments(WI.targets);
}
isCapturing()
{
return this._capturingState !== TimelineManager.CapturingState.Inactive;
}
isCapturingPageReload()
{
return this._isCapturingPageReload;
}
willAutoStop()
{
return !!this._stopCapturingTimeout;
}
relaxAutoStop()
{
if (this._stopCapturingTimeout) {
clearTimeout(this._stopCapturingTimeout);
this._stopCapturingTimeout = undefined;
}
if (this._deadTimeTimeout) {
clearTimeout(this._deadTimeTimeout);
this._deadTimeTimeout = undefined;
}
}
enable()
{
if (this._enabled)
return;
this._enabled = true;
this.reset();
for (let target of WI.targets)
this.initializeTarget(target);
}
disable()
{
if (!this._enabled)
return;
this.reset();
for (let target of WI.targets) {
// COMPATIBILITY (iOS 13): Timeline.disable did not exist yet.
if (target.hasCommand("Timeline.disable"))
target.TimelineAgent.disable();
}
this._enabled = false;
}
startCapturing(shouldCreateRecording)
{
console.assert(this._enabled);
console.assert(this._capturingState === TimelineManager.CapturingState.Stopping || this._capturingState === TimelineManager.CapturingState.Inactive, "TimelineManager is already capturing.");
if (this._capturingState !== TimelineManager.CapturingState.Stopping && this._capturingState !== TimelineManager.CapturingState.Inactive)
return;
if (!this._activeRecording || shouldCreateRecording)
this._loadNewRecording();
this._updateCapturingState(TimelineManager.CapturingState.Starting);
this._capturingStartTime = NaN;
this._activeRecording.start(this._initiatedByBackendStart);
}
stopCapturing()
{
console.assert(this._enabled);
console.assert(this._capturingState === TimelineManager.CapturingState.Starting || this._capturingState === TimelineManager.CapturingState.Active, "TimelineManager is not capturing.");
if (this._capturingState !== TimelineManager.CapturingState.Starting && this._capturingState !== TimelineManager.CapturingState.Active)
return;
this._updateCapturingState(TimelineManager.CapturingState.Stopping);
this._capturingEndTime = NaN;
this._activeRecording.stop(this._initiatedByBackendStop);
}
async processJSON({filename, json, error})
{
if (error) {
WI.TimelineManager.synthesizeImportError(error);
return;
}
if (typeof json !== "object" || json === null) {
WI.TimelineManager.synthesizeImportError(WI.UIString("invalid JSON"));
return;
}
if (!json.recording || typeof json.recording !== "object" || !json.overview || typeof json.overview !== "object" || typeof json.version !== "number") {
WI.TimelineManager.synthesizeImportError(WI.UIString("invalid JSON"));
return;
}
if (json.version !== WI.TimelineRecording.SerializationVersion) {
WI.NetworkManager.synthesizeImportError(WI.UIString("unsupported version"));
return;
}
let recordingData = json.recording;
let overviewData = json.overview;
let identifier = this._nextRecordingIdentifier++;
let newRecording = await WI.TimelineRecording.import(identifier, recordingData, filename);
this._recordings.push(newRecording);
this.dispatchEventToListeners(WI.TimelineManager.Event.RecordingCreated, {recording: newRecording});
if (this._capturingState === TimelineManager.CapturingState.Starting || this._capturingState === TimelineManager.CapturingState.Active)
this.stopCapturing();
let oldRecording = this._activeRecording;
if (oldRecording) {
const importing = true;
oldRecording.unloaded(importing);
}
this._activeRecording = newRecording;
this.dispatchEventToListeners(WI.TimelineManager.Event.RecordingLoaded, {oldRecording});
this.dispatchEventToListeners(WI.TimelineManager.Event.RecordingImported, {overviewData});
}
computeElapsedTime(timestamp)
{
if (!this._activeRecording)
return 0;
return this._activeRecording.computeElapsedTime(timestamp);
}
scriptProfilerIsTracking()
{
return this._scriptProfilerRecords !== null;
}
// ConsoleObserver
heapSnapshotAdded(timestamp, snapshot)
{
if (!this._enabled)
return;
this._addRecord(new WI.HeapAllocationsTimelineRecord(timestamp, snapshot));
}
// TimelineObserver
capturingStarted(startTime)
{
// The frontend didn't start capturing, so this was a programmatic start.
if (this._capturingState === TimelineManager.CapturingState.Inactive) {
this._initiatedByBackendStart = true;
this._activeRecording.addScriptInstrumentForProgrammaticCapture();
this.startCapturing();
}
if (!isNaN(startTime)) {
if (isNaN(this._capturingStartTime) || startTime < this._capturingStartTime)
this._capturingStartTime = startTime;
this._activeRecording.initializeTimeBoundsIfNecessary(startTime);
}
this._capturingInstrumentCount++;
console.assert(this._capturingInstrumentCount);
if (this._capturingInstrumentCount > 1)
return;
if (this._capturingState === TimelineManager.CapturingState.Active)
return;
this._lastDeadTimeTickle = 0;
this._webTimelineScriptRecordsExpectingScriptProfilerEvents = [];
this._activeRecording.capturingStarted(this._capturingStartTime);
WI.settings.timelinesAutoStop.addEventListener(WI.Setting.Event.Changed, this._handleTimelinesAutoStopSettingChanged, this);
WI.Frame.addEventListener(WI.Frame.Event.ResourceWasAdded, this._resourceWasAdded, this);
WI.Target.addEventListener(WI.Target.Event.ResourceAdded, this._resourceWasAdded, this);
WI.heapManager.addEventListener(WI.HeapManager.Event.GarbageCollected, this._garbageCollected, this);
WI.memoryManager.addEventListener(WI.MemoryManager.Event.MemoryPressure, this._memoryPressure, this);
WI.DOMNode.addEventListener(WI.DOMNode.Event.DidFireEvent, this._handleDOMNodeDidFireEvent, this);
WI.DOMNode.addEventListener(WI.DOMNode.Event.PowerEfficientPlaybackStateChanged, this._handleDOMNodePowerEfficientPlaybackStateChanged, this);
this._updateCapturingState(TimelineManager.CapturingState.Active, {startTime: this._capturingStartTime});
}
capturingStopped(endTime)
{
// The frontend didn't stop capturing, so this was a programmatic stop.
if (this._capturingState === TimelineManager.CapturingState.Active) {
this._initiatedByBackendStop = true;
this.stopCapturing();
}
if (!isNaN(endTime)) {
if (isNaN(this._capturingEndTime) || endTime > this._capturingEndTime)
this._capturingEndTime = endTime;
}
this._capturingInstrumentCount--;
console.assert(this._capturingInstrumentCount >= 0);
if (this._capturingInstrumentCount)
return;
if (this._capturingState === TimelineManager.CapturingState.Inactive)
return;
WI.DOMNode.removeEventListener(null, null, this);
WI.memoryManager.removeEventListener(null, null, this);
WI.heapManager.removeEventListener(null, null, this);
WI.Target.removeEventListener(WI.Target.Event.ResourceAdded, this._resourceWasAdded, this);
WI.Frame.removeEventListener(WI.Frame.Event.ResourceWasAdded, this._resourceWasAdded, this);
WI.settings.timelinesAutoStop.removeEventListener(null, null, this);
this._activeRecording.capturingStopped(this._capturingEndTime);
this.relaxAutoStop();
this._isCapturingPageReload = false;
this._shouldSetAutoCapturingMainResource = false;
this._mainResourceForAutoCapturing = null;
this._initiatedByBackendStart = false;
this._initiatedByBackendStop = false;
this._updateCapturingState(TimelineManager.CapturingState.Inactive, {endTime: this._capturingEndTime});
}
autoCaptureStarted()
{
console.assert(this._enabled);
let waitingForCapturingStartedEvent = this._capturingState === TimelineManager.CapturingState.Starting;
if (this._capturingState === TimelineManager.CapturingState.Starting || this._capturingState === TimelineManager.CapturingState.Active)
this.stopCapturing();
this._initiatedByBackendStart = true;
// We may already have an fresh TimelineRecording created if autoCaptureStarted is received
// between sending the Timeline.start command and receiving Timeline.capturingStarted event.
// In that case, there is no need to call startCapturing again. Reuse the fresh recording.
if (!waitingForCapturingStartedEvent) {
const createNewRecording = true;
this.startCapturing(createNewRecording);
}
this._shouldSetAutoCapturingMainResource = true;
}
eventRecorded(recordPayload)
{
if (!this._enabled)
return;
console.assert(this.isCapturing());
if (!this.isCapturing())
return;
var records = [];
// Iterate over the records tree using a stack. Doing this recursively has
// been known to cause a call stack overflow. https://webkit.org/b/79106
var stack = [{array: [recordPayload], parent: null, parentRecord: null, index: 0}];
while (stack.length) {
var entry = stack.lastValue;
var recordPayloads = entry.array;
if (entry.index < recordPayloads.length) {
var recordPayload = recordPayloads[entry.index];
var record = this._processEvent(recordPayload, entry.parent);
if (record) {
record.parent = entry.parentRecord;
records.push(record);
if (entry.parentRecord)
entry.parentRecord.children.push(record);
}
if (recordPayload.children && recordPayload.children.length)
stack.push({array: recordPayload.children, parent: recordPayload, parentRecord: record || entry.parentRecord, index: 0});
++entry.index;
} else
stack.pop();
}
for (var record of records) {
if (record.type === WI.TimelineRecord.Type.RenderingFrame) {
if (!record.children.length)
continue;
record.setupFrameIndex();
}
this._addRecord(record);
}
}
// PageObserver
pageDOMContentLoadedEventFired(timestamp)
{
if (!this._enabled)
return;
console.assert(this._activeRecording);
let computedTimestamp = this._activeRecording.computeElapsedTime(timestamp);
if (WI.networkManager.mainFrame)
WI.networkManager.mainFrame.markDOMContentReadyEvent(computedTimestamp);
let eventMarker = new WI.TimelineMarker(computedTimestamp, WI.TimelineMarker.Type.DOMContentEvent);
this._activeRecording.addEventMarker(eventMarker);
}
pageLoadEventFired(timestamp)
{
if (!this._enabled)
return;
console.assert(this._activeRecording);
let computedTimestamp = this._activeRecording.computeElapsedTime(timestamp);
if (WI.networkManager.mainFrame)
WI.networkManager.mainFrame.markLoadEvent(computedTimestamp);
let eventMarker = new WI.TimelineMarker(computedTimestamp, WI.TimelineMarker.Type.LoadEvent);
this._activeRecording.addEventMarker(eventMarker);
this._stopAutoRecordingSoon();
}
// CPUProfilerObserver
cpuProfilerTrackingStarted(timestamp)
{
this.capturingStarted(timestamp);
}
cpuProfilerTrackingUpdated(event)
{
if (!this._enabled)
return;
console.assert(this.isCapturing());
if (!this.isCapturing())
return;
this._addRecord(new WI.CPUTimelineRecord(event));
}
cpuProfilerTrackingCompleted(timestamp)
{
this.capturingStopped(timestamp);
}
// ScriptProfilerObserver
scriptProfilerTrackingStarted(timestamp)
{
this._scriptProfilerRecords = [];
this.capturingStarted(timestamp);
}
scriptProfilerTrackingUpdated(event)
{
if (!this._enabled)
return;
let {startTime, endTime, type} = event;
let scriptRecordType = this._scriptProfilerTypeToScriptTimelineRecordType(type);
let record = new WI.ScriptTimelineRecord(scriptRecordType, startTime, endTime, null, null, null, null);
record.__scriptProfilerType = type;
this._scriptProfilerRecords.push(record);
// "Other" events, generated by Web content, will have wrapping Timeline records
// and need to be merged. Non-Other events, generated purely by the JavaScript
// engine or outside of the page via APIs, will not have wrapping Timeline
// records, so these records can just be added right now.
if (type !== InspectorBackend.Enum.ScriptProfiler.EventType.Other)
this._addRecord(record);
}
scriptProfilerTrackingCompleted(timestamp, samples)
{
if (this._enabled) {
console.assert(!this._webTimelineScriptRecordsExpectingScriptProfilerEvents || this._scriptProfilerRecords.length >= this._webTimelineScriptRecordsExpectingScriptProfilerEvents.length);
if (samples) {
let {stackTraces} = samples;
let topDownCallingContextTree = this._activeRecording.topDownCallingContextTree;
// Calculate a per-sample duration.
let timestampIndex = 0;
let timestampCount = stackTraces.length;
let sampleDurations = new Array(timestampCount);
let sampleDurationIndex = 0;
const defaultDuration = 1 / 1000; // 1ms.
for (let i = 0; i < this._scriptProfilerRecords.length; ++i) {
let record = this._scriptProfilerRecords[i];
// Use a default duration for timestamps recorded outside of ScriptProfiler events.
while (timestampIndex < timestampCount && stackTraces[timestampIndex].timestamp < record.startTime) {
sampleDurations[sampleDurationIndex++] = defaultDuration;
timestampIndex++;
}
// Average the duration per sample across all samples during the record.
let samplesInRecord = 0;
while (timestampIndex < timestampCount && stackTraces[timestampIndex].timestamp < record.endTime) {
timestampIndex++;
samplesInRecord++;
}
if (samplesInRecord) {
let averageDuration = (record.endTime - record.startTime) / samplesInRecord;
sampleDurations.fill(averageDuration, sampleDurationIndex, sampleDurationIndex + samplesInRecord);
sampleDurationIndex += samplesInRecord;
}
}
// Use a default duration for timestamps recorded outside of ScriptProfiler events.
if (timestampIndex < timestampCount)
sampleDurations.fill(defaultDuration, sampleDurationIndex);
this._activeRecording.initializeCallingContextTrees(stackTraces, sampleDurations);
// FIXME: This transformation should not be needed after introducing ProfileView.
// Once we eliminate ProfileNodeTreeElements and ProfileNodeDataGridNodes.
// <https://webkit.org/b/154973> Web Inspector: Timelines UI redesign: Remove TimelineSidebarPanel
for (let i = 0; i < this._scriptProfilerRecords.length; ++i) {
let record = this._scriptProfilerRecords[i];
record.profilePayload = topDownCallingContextTree.toCPUProfilePayload(record.startTime, record.endTime);
}
}
// Associate the ScriptProfiler created records with Web Timeline records.
// Filter out the already added ScriptProfiler events which should not have been wrapped.
if (WI.sharedApp.debuggableType !== WI.DebuggableType.JavaScript) {
this._scriptProfilerRecords = this._scriptProfilerRecords.filter((x) => x.__scriptProfilerType === InspectorBackend.Enum.ScriptProfiler.EventType.Other);
this._mergeScriptProfileRecords();
}
this._scriptProfilerRecords = null;
let timeline = this._activeRecording.timelineForRecordType(WI.TimelineRecord.Type.Script);
timeline.refresh();
}
this.capturingStopped(timestamp);
}
// MemoryObserver
memoryTrackingStarted(timestamp)
{
this.capturingStarted(timestamp);
}
memoryTrackingUpdated(event)
{
if (!this._enabled)
return;
console.assert(this.isCapturing());
if (!this.isCapturing())
return;
this._addRecord(new WI.MemoryTimelineRecord(event.timestamp, event.categories));
}
memoryTrackingCompleted(timestamp)
{
this.capturingStopped(timestamp);
}
// HeapObserver
heapTrackingStarted(timestamp, snapshot)
{
this.capturingStarted(timestamp);
if (this._enabled)
this._addRecord(new WI.HeapAllocationsTimelineRecord(timestamp, snapshot));
}
heapTrackingCompleted(timestamp, snapshot)
{
if (this._enabled)
this._addRecord(new WI.HeapAllocationsTimelineRecord(timestamp, snapshot));
this.capturingStopped();
}
// AnimationObserver
animationTrackingStarted(timestamp)
{
this.capturingStarted(timestamp);
}
animationTrackingUpdated(timestamp, event)
{
if (!this._enabled)
return;
console.assert(this.isCapturing());
if (!this.isCapturing())
return;
let mediaTimeline = this._activeRecording.timelineForRecordType(WI.TimelineRecord.Type.Media);
console.assert(mediaTimeline);
let record = mediaTimeline.recordForTrackingAnimationId(event.trackingAnimationId);
if (!record) {
let details = {
trackingAnimationId: event.trackingAnimationId,
};
let eventType;
if (event.animationName) {
eventType = WI.MediaTimelineRecord.EventType.CSSAnimation;
details.animationName = event.animationName;
} else if (event.transitionProperty) {
eventType = WI.MediaTimelineRecord.EventType.CSSTransition;
details.transitionProperty = event.transitionProperty;
} else {
WI.reportInternalError(`Unknown event type for event '${JSON.stringify(event)}'`);
return;
}
let domNode = WI.domManager.nodeForId(event.nodeId);
console.assert(domNode);
record = new WI.MediaTimelineRecord(eventType, domNode, details);
this._addRecord(record);
}
record.updateAnimationState(timestamp, event.animationState);
}
animationTrackingCompleted(timestamp)
{
this.capturingStopped(timestamp);
}
// Private
_updateCapturingState(state, data = {})
{
if (this._capturingState === state)
return;
this._capturingState = state;
this.dispatchEventToListeners(TimelineManager.Event.CapturingStateChanged, data);
}
_processRecord(recordPayload, parentRecordPayload)
{
console.assert(this.isCapturing());
var startTime = this._activeRecording.computeElapsedTime(recordPayload.startTime);
var endTime = this._activeRecording.computeElapsedTime(recordPayload.endTime);
var callFrames = this._callFramesFromPayload(recordPayload.stackTrace);
var significantCallFrame = null;
if (callFrames) {
for (var i = 0; i < callFrames.length; ++i) {
if (callFrames[i].nativeCode)
continue;
significantCallFrame = callFrames[i];
break;
}
}
var sourceCodeLocation = significantCallFrame && significantCallFrame.sourceCodeLocation;
switch (recordPayload.type) {
case InspectorBackend.Enum.Timeline.EventType.ScheduleStyleRecalculation:
console.assert(isNaN(endTime));
// Pass the startTime as the endTime since this record type has no duration.
return new WI.LayoutTimelineRecord(WI.LayoutTimelineRecord.EventType.InvalidateStyles, startTime, startTime, callFrames, sourceCodeLocation);
case InspectorBackend.Enum.Timeline.EventType.RecalculateStyles:
return new WI.LayoutTimelineRecord(WI.LayoutTimelineRecord.EventType.RecalculateStyles, startTime, endTime, callFrames, sourceCodeLocation);
case InspectorBackend.Enum.Timeline.EventType.InvalidateLayout:
console.assert(isNaN(endTime));
// Pass the startTime as the endTime since this record type has no duration.
return new WI.LayoutTimelineRecord(WI.LayoutTimelineRecord.EventType.InvalidateLayout, startTime, startTime, callFrames, sourceCodeLocation);
case InspectorBackend.Enum.Timeline.EventType.Layout:
var layoutRecordType = sourceCodeLocation ? WI.LayoutTimelineRecord.EventType.ForcedLayout : WI.LayoutTimelineRecord.EventType.Layout;
var quad = new WI.Quad(recordPayload.data.root);
return new WI.LayoutTimelineRecord(layoutRecordType, startTime, endTime, callFrames, sourceCodeLocation, quad);
case InspectorBackend.Enum.Timeline.EventType.Paint:
var quad = new WI.Quad(recordPayload.data.clip);
return new WI.LayoutTimelineRecord(WI.LayoutTimelineRecord.EventType.Paint, startTime, endTime, callFrames, sourceCodeLocation, quad);
case InspectorBackend.Enum.Timeline.EventType.Composite:
return new WI.LayoutTimelineRecord(WI.LayoutTimelineRecord.EventType.Composite, startTime, endTime, callFrames, sourceCodeLocation);
case InspectorBackend.Enum.Timeline.EventType.RenderingFrame:
if (!recordPayload.children || !recordPayload.children.length)
return null;
return new WI.RenderingFrameTimelineRecord(startTime, endTime);
case InspectorBackend.Enum.Timeline.EventType.EvaluateScript:
if (!sourceCodeLocation) {
var mainFrame = WI.networkManager.mainFrame;
var scriptResource = mainFrame.url === recordPayload.data.url ? mainFrame.mainResource : mainFrame.resourceForURL(recordPayload.data.url, true);
if (scriptResource) {
// The lineNumber is 1-based, but we expect 0-based.
let lineNumber = recordPayload.data.lineNumber - 1;
let columnNumber = "columnNumber" in recordPayload.data ? recordPayload.data.columnNumber - 1 : 0;
sourceCodeLocation = scriptResource.createSourceCodeLocation(lineNumber, columnNumber);
}
}
var profileData = recordPayload.data.profile;
var record;
switch (parentRecordPayload && parentRecordPayload.type) {
case InspectorBackend.Enum.Timeline.EventType.TimerFire:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.TimerFired, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.timerId, profileData);
break;
case InspectorBackend.Enum.Timeline.EventType.ObserverCallback:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.ObserverCallback, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.type, profileData);
break;
case InspectorBackend.Enum.Timeline.EventType.FireAnimationFrame:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.AnimationFrameFired, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.id, profileData);
break;
default:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.ScriptEvaluated, startTime, endTime, callFrames, sourceCodeLocation, null, profileData);
break;
}
this._webTimelineScriptRecordsExpectingScriptProfilerEvents.push(record);
return record;
case InspectorBackend.Enum.Timeline.EventType.ConsoleProfile:
var profileData = recordPayload.data.profile;
// COMPATIBILITY (iOS 9): With the Sampling Profiler, profiles no longer include legacy profile data.
console.assert(profileData || InspectorBackend.hasCommand("Timeline.setInstruments"));
return new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.ConsoleProfileRecorded, startTime, endTime, callFrames, sourceCodeLocation, recordPayload.data.title, profileData);
case InspectorBackend.Enum.Timeline.EventType.TimerFire:
case InspectorBackend.Enum.Timeline.EventType.EventDispatch:
case InspectorBackend.Enum.Timeline.EventType.FireAnimationFrame:
case InspectorBackend.Enum.Timeline.EventType.ObserverCallback:
// These are handled when we see the child FunctionCall or EvaluateScript.
break;
case InspectorBackend.Enum.Timeline.EventType.FunctionCall:
// FunctionCall always happens as a child of another record, and since the FunctionCall record
// has useful info we just make the timeline record here (combining the data from both records).
if (!parentRecordPayload) {
console.warn("Unexpectedly received a FunctionCall timeline record without a parent record");
break;
}
if (!sourceCodeLocation) {
var mainFrame = WI.networkManager.mainFrame;
var scriptResource = mainFrame.url === recordPayload.data.scriptName ? mainFrame.mainResource : mainFrame.resourceForURL(recordPayload.data.scriptName, true);
if (scriptResource) {
// The lineNumber is 1-based, but we expect 0-based.
let lineNumber = recordPayload.data.scriptLine - 1;
let columnNumber = "scriptColumn" in recordPayload.data ? recordPayload.data.scriptColumn - 1 : 0;
sourceCodeLocation = scriptResource.createSourceCodeLocation(lineNumber, columnNumber);
}
}
var profileData = recordPayload.data.profile;
var record;
switch (parentRecordPayload.type) {
case InspectorBackend.Enum.Timeline.EventType.TimerFire:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.TimerFired, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.timerId, profileData);
break;
case InspectorBackend.Enum.Timeline.EventType.EventDispatch:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.EventDispatched, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.type, profileData, parentRecordPayload.data);
break;
case InspectorBackend.Enum.Timeline.EventType.ObserverCallback:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.ObserverCallback, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.type, profileData);
break;
case InspectorBackend.Enum.Timeline.EventType.FireAnimationFrame:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.AnimationFrameFired, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.id, profileData);
break;
case InspectorBackend.Enum.Timeline.EventType.FunctionCall:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.ScriptEvaluated, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.id, profileData);
break;
case InspectorBackend.Enum.Timeline.EventType.RenderingFrame:
record = new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.ScriptEvaluated, startTime, endTime, callFrames, sourceCodeLocation, parentRecordPayload.data.id, profileData);
break;
default:
console.assert(false, "Missed FunctionCall embedded inside of: " + parentRecordPayload.type);
break;
}
if (record) {
this._webTimelineScriptRecordsExpectingScriptProfilerEvents.push(record);
return record;
}
break;
case InspectorBackend.Enum.Timeline.EventType.ProbeSample:
// Pass the startTime as the endTime since this record type has no duration.
sourceCodeLocation = WI.debuggerManager.probeForIdentifier(recordPayload.data.probeId).breakpoint.sourceCodeLocation;
return new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.ProbeSampleRecorded, startTime, startTime, callFrames, sourceCodeLocation, recordPayload.data.probeId);
case InspectorBackend.Enum.Timeline.EventType.TimerInstall:
console.assert(isNaN(endTime));
// Pass the startTime as the endTime since this record type has no duration.
var timerDetails = {timerId: recordPayload.data.timerId, timeout: recordPayload.data.timeout, repeating: !recordPayload.data.singleShot};
return new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.TimerInstalled, startTime, startTime, callFrames, sourceCodeLocation, timerDetails);
case InspectorBackend.Enum.Timeline.EventType.TimerRemove:
console.assert(isNaN(endTime));
// Pass the startTime as the endTime since this record type has no duration.
return new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.TimerRemoved, startTime, startTime, callFrames, sourceCodeLocation, recordPayload.data.timerId);
case InspectorBackend.Enum.Timeline.EventType.RequestAnimationFrame:
console.assert(isNaN(endTime));
// Pass the startTime as the endTime since this record type has no duration.
return new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.AnimationFrameRequested, startTime, startTime, callFrames, sourceCodeLocation, recordPayload.data.id);
case InspectorBackend.Enum.Timeline.EventType.CancelAnimationFrame:
console.assert(isNaN(endTime));
// Pass the startTime as the endTime since this record type has no duration.
return new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.AnimationFrameCanceled, startTime, startTime, callFrames, sourceCodeLocation, recordPayload.data.id);
default:
console.error("Missing handling of Timeline Event Type: " + recordPayload.type);
}
return null;
}
_processEvent(recordPayload, parentRecordPayload)
{
console.assert(this.isCapturing());
switch (recordPayload.type) {
case InspectorBackend.Enum.Timeline.EventType.TimeStamp:
var timestamp = this._activeRecording.computeElapsedTime(recordPayload.startTime);
var eventMarker = new WI.TimelineMarker(timestamp, WI.TimelineMarker.Type.TimeStamp, recordPayload.data.message);
this._activeRecording.addEventMarker(eventMarker);
break;
case InspectorBackend.Enum.Timeline.EventType.Time:
case InspectorBackend.Enum.Timeline.EventType.TimeEnd:
// FIXME: <https://webkit.org/b/150690> Web Inspector: Show console.time/timeEnd ranges in Timeline
// FIXME: Make use of "message" payload properties.
break;
default:
return this._processRecord(recordPayload, parentRecordPayload);
}
return null;
}
_loadNewRecording()
{
if (this._activeRecording && this._activeRecording.isEmpty())
return;
let instruments = this.enabledTimelineTypes.map((type) => WI.Instrument.createForTimelineType(type));
let identifier = this._nextRecordingIdentifier++;
let newRecording = new WI.TimelineRecording(identifier, WI.UIString("Timeline Recording %d").format(identifier), instruments);
this._recordings.push(newRecording);
this.dispatchEventToListeners(WI.TimelineManager.Event.RecordingCreated, {recording: newRecording});
if (this._capturingState === TimelineManager.CapturingState.Starting || this._capturingState === TimelineManager.CapturingState.Active)
this.stopCapturing();
var oldRecording = this._activeRecording;
if (oldRecording)
oldRecording.unloaded();
this._activeRecording = newRecording;
// COMPATIBILITY (iOS 8): When using Legacy timestamps, a navigation will have computed
// the main resource's will send request timestamp in terms of the last page's base timestamp.
// Now that we have navigated, we should reset the legacy base timestamp and the
// will send request timestamp for the new main resource. This way, all new timeline
// records will be computed relative to the new navigation.
if (this._mainResourceForAutoCapturing && WI.TimelineRecording.isLegacy) {
console.assert(this._mainResourceForAutoCapturing.originalRequestWillBeSentTimestamp);
this._activeRecording.setLegacyBaseTimestamp(this._mainResourceForAutoCapturing.originalRequestWillBeSentTimestamp);
this._mainResourceForAutoCapturing._requestSentTimestamp = 0;
}
this.dispatchEventToListeners(WI.TimelineManager.Event.RecordingLoaded, {oldRecording});
}
_callFramesFromPayload(payload)
{
if (!payload)
return null;
return payload.map((x) => WI.CallFrame.fromPayload(WI.assumingMainTarget(), x));
}
_addRecord(record)
{
this._activeRecording.addRecord(record);
// Only worry about dead time after the load event.
if (WI.networkManager.mainFrame && isNaN(WI.networkManager.mainFrame.loadEventTimestamp))
this._resetAutoRecordingDeadTimeTimeout();
}
_attemptAutoCapturingForFrame(frame)
{
if (!this._autoCaptureOnPageLoad)
return false;
if (!frame.isMainFrame())
return false;
if (!InspectorBackend.hasDomain("Timeline"))
return false;
// COMPATIBILITY (iOS 9): Timeline.setAutoCaptureEnabled did not exist.
// Perform auto capture in the frontend.
if (!InspectorBackend.hasCommand("Timeline.setAutoCaptureEnabled"))
return this._legacyAttemptStartAutoCapturingForFrame(frame);
if (!this._shouldSetAutoCapturingMainResource)
return false;
console.assert(this.isCapturing(), "We saw autoCaptureStarted so we should already be capturing");
let mainResource = frame.provisionalMainResource || frame.mainResource;
if (mainResource === this._mainResourceForAutoCapturing)
return false;
let oldMainResource = frame.mainResource || null;
this._isCapturingPageReload = oldMainResource !== null && oldMainResource.url === mainResource.url;
this._mainResourceForAutoCapturing = mainResource;
this._addRecord(new WI.ResourceTimelineRecord(mainResource));
this._resetAutoRecordingMaxTimeTimeout();
this._shouldSetAutoCapturingMainResource = false;
return true;
}
_legacyAttemptStartAutoCapturingForFrame(frame)
{
if (this.isCapturing() && !this._mainResourceForAutoCapturing)
return false;
let mainResource = frame.provisionalMainResource || frame.mainResource;
if (mainResource === this._mainResourceForAutoCapturing)
return false;
let oldMainResource = frame.mainResource || null;
this._isCapturingPageReload = oldMainResource !== null && oldMainResource.url === mainResource.url;
if (this._capturingState === TimelineManager.CapturingState.Starting || this._capturingState === TimelineManager.CapturingState.Active)
this.stopCapturing();
this._mainResourceForAutoCapturing = mainResource;
this._loadNewRecording();
this.startCapturing();
this._addRecord(new WI.ResourceTimelineRecord(mainResource));
this._resetAutoRecordingMaxTimeTimeout();
return true;
}
_stopAutoRecordingSoon()
{
if (!WI.settings.timelinesAutoStop.value)
return;
// Only auto stop when auto capturing.
if (!this.isCapturing() || !this._mainResourceForAutoCapturing)
return;
if (this._stopCapturingTimeout)
clearTimeout(this._stopCapturingTimeout);
this._stopCapturingTimeout = setTimeout(this._boundStopCapturing, WI.TimelineManager.MaximumAutoRecordDurationAfterLoadEvent);
}
_resetAutoRecordingMaxTimeTimeout()
{
if (!WI.settings.timelinesAutoStop.value)
return;
if (this._stopCapturingTimeout)
clearTimeout(this._stopCapturingTimeout);
this._stopCapturingTimeout = setTimeout(this._boundStopCapturing, WI.TimelineManager.MaximumAutoRecordDuration);
}
_resetAutoRecordingDeadTimeTimeout()
{
if (!WI.settings.timelinesAutoStop.value)
return;
// Only monitor dead time when auto capturing.
if (!this.isCapturing() || !this._mainResourceForAutoCapturing)
return;
// Avoid unnecessary churning of timeout identifier by not tickling until 10ms have passed.
let now = Date.now();
if (now <= this._lastDeadTimeTickle)
return;
this._lastDeadTimeTickle = now + 10;
if (this._deadTimeTimeout)
clearTimeout(this._deadTimeTimeout);
this._deadTimeTimeout = setTimeout(this._boundStopCapturing, WI.TimelineManager.DeadTimeRequiredToStopAutoRecordingEarly);
}
_provisionalLoadStarted(event)
{
if (!this._enabled)
return;
this._attemptAutoCapturingForFrame(event.target);
}
_mainResourceDidChange(event)
{
if (!this._enabled)
return;
// Ignore resource events when there isn't a main frame yet. Those events are triggered by
// loading the cached resources when the inspector opens, and they do not have timing information.
if (!WI.networkManager.mainFrame)
return;
let frame = event.target;
// When performing a page transition start a recording once the main resource changes.
// We start a legacy capture because the backend wasn't available to automatically
// initiate the capture, so the frontend must start the capture.
if (this._transitioningPageTarget) {
this._transitioningPageTarget = false;
if (this._autoCaptureOnPageLoad)
this._legacyAttemptStartAutoCapturingForFrame(frame);
return;
}
if (this._attemptAutoCapturingForFrame(frame))
return;
if (!this.isCapturing())
return;
let mainResource = frame.mainResource;
if (mainResource === this._mainResourceForAutoCapturing)
return;
this._addRecord(new WI.ResourceTimelineRecord(mainResource));
}
_resourceWasAdded(event)
{
if (!this._enabled)
return;
// Ignore resource events when there isn't a main frame yet. Those events are triggered by
// loading the cached resources when the inspector opens, and they do not have timing information.
if (!WI.networkManager.mainFrame)
return;
this._addRecord(new WI.ResourceTimelineRecord(event.data.resource));
}
_garbageCollected(event)
{
if (!this._enabled)
return;
let {collection} = event.data;
this._addRecord(new WI.ScriptTimelineRecord(WI.ScriptTimelineRecord.EventType.GarbageCollected, collection.startTime, collection.endTime, null, null, collection));
}
_memoryPressure(event)
{
if (!this._enabled)
return;
this._activeRecording.addMemoryPressureEvent(event.data.memoryPressureEvent);
}
_handleTimelinesAutoStopSettingChanged(event)
{
if (WI.settings.timelinesAutoStop.value) {
if (this._mainResourceForAutoCapturing && !isNaN(this._mainResourceForAutoCapturing.parentFrame.loadEventTimestamp))
this._stopAutoRecordingSoon();
else
this._resetAutoRecordingMaxTimeTimeout();
this._resetAutoRecordingDeadTimeTimeout();
} else
this.relaxAutoStop();
}
_scriptProfilerTypeToScriptTimelineRecordType(type)
{
switch (type) {
case InspectorBackend.Enum.ScriptProfiler.EventType.API:
return WI.ScriptTimelineRecord.EventType.APIScriptEvaluated;
case InspectorBackend.Enum.ScriptProfiler.EventType.Microtask:
return WI.ScriptTimelineRecord.EventType.MicrotaskDispatched;
case InspectorBackend.Enum.ScriptProfiler.EventType.Other:
return WI.ScriptTimelineRecord.EventType.ScriptEvaluated;
}
}
_mergeScriptProfileRecords()
{
let nextRecord = function(list) { return list.shift() || null; };
let nextWebTimelineRecord = nextRecord.bind(null, this._webTimelineScriptRecordsExpectingScriptProfilerEvents);
let nextScriptProfilerRecord = nextRecord.bind(null, this._scriptProfilerRecords);
let recordEnclosesRecord = function(record1, record2) {
return record1.startTime <= record2.startTime && record1.endTime >= record2.endTime;
};
let webRecord = nextWebTimelineRecord();
let profilerRecord = nextScriptProfilerRecord();
while (webRecord && profilerRecord) {
// Skip web records with parent web records. For example an EvaluateScript with an EvaluateScript parent.
if (webRecord.parent instanceof WI.ScriptTimelineRecord) {
console.assert(recordEnclosesRecord(webRecord.parent, webRecord), "Timeline Record incorrectly wrapping another Timeline Record");
webRecord = nextWebTimelineRecord();
continue;
}
// Normal case of a Web record wrapping a Script record.
if (recordEnclosesRecord(webRecord, profilerRecord)) {
webRecord.profilePayload = profilerRecord.profilePayload;
profilerRecord = nextScriptProfilerRecord();
// If there are more script profile records in the same time interval, add them
// as individual script evaluated records with profiles. This can happen with
// web microtask checkpoints that are technically inside of other web records.
// FIXME: <https://webkit.org/b/152903> Web Inspector: Timeline Cleanup: Better Timeline Record for Microtask Checkpoints
while (profilerRecord && recordEnclosesRecord(webRecord, profilerRecord)) {
this._addRecord(profilerRecord);
profilerRecord = nextScriptProfilerRecord();
}
webRecord = nextWebTimelineRecord();
continue;
}
// Profiler Record is entirely after the Web Record. This would mean an empty web record.
if (profilerRecord.startTime > webRecord.endTime) {
console.warn("Unexpected case of a Timeline record not containing a ScriptProfiler event and profile data");
webRecord = nextWebTimelineRecord();
continue;
}
// Non-wrapped profiler record.
console.warn("Unexpected case of a ScriptProfiler event not being contained by a Timeline record");
this._addRecord(profilerRecord);
profilerRecord = nextScriptProfilerRecord();
}
// Skipping the remaining ScriptProfiler events to match the current UI for handling Timeline records.
// However, the remaining ScriptProfiler records are valid and could be shown.
// FIXME: <https://webkit.org/b/152904> Web Inspector: Timeline UI should keep up with processing all incoming records
}
_updateAutoCaptureInstruments(targets)
{
console.assert(this._enabled);
let enabledTimelineTypes = this.enabledTimelineTypes;
for (let target of targets) {
if (!target.hasCommand("Timeline.setInstruments"))
continue;
let instrumentSet = new Set;
for (let timelineType of enabledTimelineTypes) {
switch (timelineType) {
case WI.TimelineRecord.Type.Script:
instrumentSet.add(InspectorBackend.Enum.Timeline.Instrument.ScriptProfiler);
break;
case WI.TimelineRecord.Type.HeapAllocations:
instrumentSet.add(InspectorBackend.Enum.Timeline.Instrument.Heap);
break;
case WI.TimelineRecord.Type.Network:
case WI.TimelineRecord.Type.RenderingFrame:
case WI.TimelineRecord.Type.Layout:
instrumentSet.add(InspectorBackend.Enum.Timeline.Instrument.Timeline);
break;
case WI.TimelineRecord.Type.CPU:
instrumentSet.add(InspectorBackend.Enum.Timeline.Instrument.CPU);
break;
case WI.TimelineRecord.Type.Memory:
instrumentSet.add(InspectorBackend.Enum.Timeline.Instrument.Memory);
break;
case WI.TimelineRecord.Type.Media:
// COMPATIBILITY (iOS 13): Animation domain did not exist yet.
if (InspectorBackend.hasDomain("Animation"))
instrumentSet.add(InspectorBackend.Enum.Timeline.Instrument.Animation);
break;
}
}
target.TimelineAgent.setInstruments(Array.from(instrumentSet));
}
}
_handleDOMNodeDidFireEvent(event)
{
if (!this._enabled)
return;
let domNode = event.target;
if (!domNode.isMediaElement())
return;
let {domEvent} = event.data;
let mediaTimeline = this._activeRecording.timelineForRecordType(WI.TimelineRecord.Type.Media);
console.assert(mediaTimeline);
let record = mediaTimeline.recordForMediaElementEvents(domNode);
if (!record) {
record = new WI.MediaTimelineRecord(WI.MediaTimelineRecord.EventType.MediaElement, domNode);
this._addRecord(record);
}
record.addDOMEvent(domEvent.timestamp, domEvent);
}
_handleDOMNodePowerEfficientPlaybackStateChanged(event)
{
if (!this._enabled)
return;
let domNode = event.target;
console.assert(domNode.isMediaElement());
let {timestamp, isPowerEfficient} = event.data;
let mediaTimeline = this._activeRecording.timelineForRecordType(WI.TimelineRecord.Type.Media);
console.assert(mediaTimeline);
let record = mediaTimeline.recordForMediaElementEvents(domNode);
if (!record) {
record = new WI.MediaTimelineRecord(WI.MediaTimelineRecord.EventType.MediaElement, domNode);
this._addRecord(record);
}
record.powerEfficientPlaybackStateChanged(timestamp, isPowerEfficient);
}
};
WI.TimelineManager.CapturingState = {
Inactive: "inactive",
Starting: "starting",
Active: "active",
Stopping: "stopping",
};
WI.TimelineManager.Event = {
CapturingStateChanged: "timeline-manager-capturing-started",
RecordingCreated: "timeline-manager-recording-created",
RecordingLoaded: "timeline-manager-recording-loaded",
RecordingImported: "timeline-manager-recording-imported",
};
WI.TimelineManager.MaximumAutoRecordDuration = 90000; // 90 seconds
WI.TimelineManager.MaximumAutoRecordDurationAfterLoadEvent = 10000; // 10 seconds
WI.TimelineManager.DeadTimeRequiredToStopAutoRecordingEarly = 2000; // 2 seconds