DevTools: remove old Timeline front-end implementation

Source/devtools/front_end/timeline/TimelineModelImpl.js

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/**
- * @constructor
- * @extends {WebInspector.TimelineModel}
- * @implements {WebInspector.TargetManager.Observer}
- */
-WebInspector.TimelineModelImpl = function()
-{
-    WebInspector.TimelineModel.call(this);
-    /** @type {?WebInspector.Target} */
-    this._currentTarget = null;
-    this._filters = [];
-    this._bindings = new WebInspector.TimelineModelImpl.InterRecordBindings();
-
-    this.reset();
-
-    WebInspector.targetManager.addModelListener(WebInspector.TimelineManager, WebInspector.TimelineManager.EventTypes.TimelineEventRecorded, this._onRecordAdded, this);
-    WebInspector.targetManager.addModelListener(WebInspector.TimelineManager, WebInspector.TimelineManager.EventTypes.TimelineStarted, this._onStarted, this);
-    WebInspector.targetManager.addModelListener(WebInspector.TimelineManager, WebInspector.TimelineManager.EventTypes.TimelineStopped, this._onStopped, this);
-    WebInspector.targetManager.addModelListener(WebInspector.TimelineManager, WebInspector.TimelineManager.EventTypes.TimelineProgress, this._onProgress, this);
-    WebInspector.targetManager.observeTargets(this);
-}
-
-WebInspector.TimelineModelImpl.TransferChunkLengthBytes = 5000000;
-
-WebInspector.TimelineModelImpl.prototype = {
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    targetAdded: function(target) { },
-
-    /**
-     * @param {!WebInspector.Target} target
-     */
-    targetRemoved: function(target)
-    {
-        if (this._currentTarget === target)
-            this._currentTarget = null;
-    },
-
-    /**
-     * @param {boolean} captureCauses
-     * @param {boolean} captureMemory
-     * @param {boolean} capturePictures
-     */
-    startRecording: function(captureCauses, captureMemory, capturePictures)
-    {
-        console.assert(!capturePictures, "Legacy timeline does not support capturing pictures");
-        this.reset();
-        this._currentTarget = WebInspector.context.flavor(WebInspector.Target);
-        console.assert(this._currentTarget);
-
-        this._clientInitiatedRecording = true;
-        var maxStackFrames = captureCauses ? 30 : 0;
-        var includeGPUEvents = Runtime.experiments.isEnabled("gpuTimeline");
-        var liveEvents = [ WebInspector.TimelineModel.RecordType.BeginFrame,
-                           WebInspector.TimelineModel.RecordType.DrawFrame,
-                           WebInspector.TimelineModel.RecordType.RequestMainThreadFrame,
-                           WebInspector.TimelineModel.RecordType.ActivateLayerTree ];
-        this._currentTarget.timelineManager.start(maxStackFrames, liveEvents.join(","), captureMemory, includeGPUEvents, this._fireRecordingStarted.bind(this));
-    },
-
-    stopRecording: function()
-    {
-        if (!this._currentTarget)
-            return;
-
-        if (!this._clientInitiatedRecording) {
-            this._currentTarget.timelineManager.start(undefined, undefined, undefined, undefined, stopTimeline.bind(this));
-            return;
-        }
-
-        /**
-         * Console started this one and we are just sniffing it. Initiate recording so that we
-         * could stop it.
-         * @this {WebInspector.TimelineModelImpl}
-         */
-        function stopTimeline()
-        {
-            this._currentTarget.timelineManager.stop(this._fireRecordingStopped.bind(this));
-        }
-
-        this._clientInitiatedRecording = false;
-        this._currentTarget.timelineManager.stop(this._fireRecordingStopped.bind(this));
-    },
-
-    /**
-     * @return {!Array.<!WebInspector.TimelineModel.Record>}
-     */
-    records: function()
-    {
-        return this._records;
-    },
-
-    /**
-     * @param {!WebInspector.Event} event
-     */
-    _onRecordAdded: function(event)
-    {
-        var timelineManager = /** @type {!WebInspector.TimelineManager} */ (event.target);
-        if (this._collectionEnabled && timelineManager.target() === this._currentTarget)
-            this._addRecord(/** @type {!TimelineAgent.TimelineEvent} */(event.data));
-    },
-
-    /**
-     * @param {!WebInspector.Event} event
-     */
-    _onStarted: function(event)
-    {
-        if (!event.data || this._collectionEnabled)
-            return;
-        // Started from console.
-        var timelineManager = /** @type {!WebInspector.TimelineManager} */ (event.target);
-        if (this._currentTarget !== timelineManager.target()) {
-            this.reset();
-            this._currentTarget = timelineManager.target();
-        }
-        this._fireRecordingStarted();
-    },
-
-    /**
-     * @param {!WebInspector.Event} event
-     */
-    _onStopped: function(event)
-    {
-        var timelineManager = /** @type {!WebInspector.TimelineManager} */ (event.target);
-        if (timelineManager.target() !== this._currentTarget)
-            return;
-        // We were buffering events, discard those that got through, the real ones are coming!
-        this.reset();
-        this._currentTarget = timelineManager.target();
-
-        var events = /** @type {!Array.<!TimelineAgent.TimelineEvent>} */ (event.data.events);
-        for (var i = 0; i < events.length; ++i)
-            this._addRecord(events[i]);
-
-        if (event.data.consoleTimeline) {
-            // Stopped from console.
-            this._fireRecordingStopped(null);
-        }
-
-        this._collectionEnabled = false;
-    },
-
-    /**
-     * @param {!WebInspector.Event} event
-     */
-    _onProgress: function(event)
-    {
-        var timelineManager = /** @type {!WebInspector.TimelineManager} */ (event.target);
-        if (timelineManager.target() === this._currentTarget)
-            this.dispatchEventToListeners(WebInspector.TimelineModel.Events.RecordingProgress, event.data);
-    },
-
-    _fireRecordingStarted: function()
-    {
-        this._collectionEnabled = true;
-        this.dispatchEventToListeners(WebInspector.TimelineModel.Events.RecordingStarted);
-    },
-
-    /**
-     * @param {?Protocol.Error} error
-     */
-    _fireRecordingStopped: function(error)
-    {
-        this.dispatchEventToListeners(WebInspector.TimelineModel.Events.RecordingStopped);
-    },
-
-    /**
-     * @param {!TimelineAgent.TimelineEvent} payload
-     */
-    _addRecord: function(payload)
-    {
-        this._internStrings(payload);
-        this._payloads.push(payload);
-
-        var record = this._innerAddRecord(payload, null);
-        this._updateBoundaries(record);
-        this._records.push(record);
-        if (record.type() === WebInspector.TimelineModel.RecordType.Program)
-            this._mainThreadTasks.push(record);
-        if (record.type() === WebInspector.TimelineModel.RecordType.GPUTask)
-            this._gpuThreadTasks.push(record);
-
-        this.dispatchEventToListeners(WebInspector.TimelineModel.Events.RecordAdded, record);
-    },
-
-    /**
-     * @param {!TimelineAgent.TimelineEvent} payload
-     * @param {?WebInspector.TimelineModel.Record} parentRecord
-     * @return {!WebInspector.TimelineModel.Record}
-     */
-    _innerAddRecord: function(payload, parentRecord)
-    {
-        var record = new WebInspector.TimelineModel.RecordImpl(this, payload, parentRecord);
-        if (WebInspector.TimelineUIUtilsImpl.isEventDivider(record))
-            this._eventDividerRecords.push(record);
-
-        for (var i = 0; payload.children && i < payload.children.length; ++i)
-            this._innerAddRecord.call(this, payload.children[i], record);
-
-        if (parentRecord)
-            parentRecord._selfTime -= record.endTime() - record.startTime();
-        return record;
-    },
-
-    /**
-     * @param {!WebInspector.ChunkedFileReader} fileReader
-     * @param {!WebInspector.Progress} progress
-     * @return {!WebInspector.OutputStream}
-     */
-    createLoader: function(fileReader, progress)
-    {
-        return new WebInspector.TimelineModelLoader(this, fileReader, progress);
-    },
-
-    /**
-     * @param {!WebInspector.OutputStream} stream
-     */
-    writeToStream: function(stream)
-    {
-        var saver = new WebInspector.TimelineSaver(stream);
-        saver.save(this._payloads, window.navigator.appVersion);
-    },
-
-    reset: function()
-    {
-        if (!this._collectionEnabled)
-            this._currentTarget = null;
-        this._payloads = [];
-        this._stringPool = {};
-        this._bindings._reset();
-        this._minimumRecordTime = 0;
-        this._maximumRecordTime = 0;
-        WebInspector.TimelineModel.prototype.reset.call(this);
-    },
-
-    /**
-     * @return {number}
-     */
-    minimumRecordTime: function()
-    {
-        return this._minimumRecordTime;
-    },
-
-    /**
-     * @return {number}
-     */
-    maximumRecordTime: function()
-    {
-        return this._maximumRecordTime;
-    },
-
-    /**
-     * @param {!WebInspector.TimelineModel.Record} record
-     */
-    _updateBoundaries: function(record)
-    {
-        var startTime = record.startTime();
-        var endTime = record.endTime();
-
-        if (!this._minimumRecordTime || startTime < this._minimumRecordTime)
-            this._minimumRecordTime = startTime;
-        if (endTime > this._maximumRecordTime)
-            this._maximumRecordTime = endTime;
-    },
-
-    /**
-     * @param {!TimelineAgent.TimelineEvent} record
-     */
-    _internStrings: function(record)
-    {
-        for (var name in record) {
-            var value = record[name];
-            if (typeof value !== "string")
-                continue;
-
-            var interned = this._stringPool[value];
-            if (typeof interned === "string")
-                record[name] = interned;
-            else
-                this._stringPool[value] = value;
-        }
-
-        var children = record.children;
-        for (var i = 0; children && i < children.length; ++i)
-            this._internStrings(children[i]);
-    },
-
-    __proto__: WebInspector.TimelineModel.prototype
-}
-
-
-/**
- * @constructor
- */
-WebInspector.TimelineModelImpl.InterRecordBindings = function() {
-    this._reset();
-}
-
-WebInspector.TimelineModelImpl.InterRecordBindings.prototype = {
-    _reset: function()
-    {
-        this._sendRequestRecords = {};
-        this._timerRecords = {};
-        this._requestAnimationFrameRecords = {};
-        this._layoutInvalidate = {};
-        this._lastScheduleStyleRecalculation = {};
-        this._webSocketCreateRecords = {};
-    }
-}
-
-/**
- * @constructor
- * @implements {WebInspector.TimelineModel.Record}
- * @param {!WebInspector.TimelineModel} model
- * @param {!TimelineAgent.TimelineEvent} timelineEvent
- * @param {?WebInspector.TimelineModel.Record} parentRecord
- */
-WebInspector.TimelineModel.RecordImpl = function(model, timelineEvent, parentRecord)
-{
-    this._model = model;
-    var bindings = this._model._bindings;
-    this._record = timelineEvent;
-    this._thread = this._record.thread || WebInspector.TimelineModel.MainThreadName;
-    this._children = [];
-    if (parentRecord) {
-        this.parent = parentRecord;
-        parentRecord.children().push(this);
-    }
-
-    this._selfTime = this.endTime() - this.startTime();
-
-    var recordTypes = WebInspector.TimelineModel.RecordType;
-    switch (timelineEvent.type) {
-    case recordTypes.ResourceSendRequest:
-        // Make resource receive record last since request was sent; make finish record last since response received.
-        bindings._sendRequestRecords[timelineEvent.data["requestId"]] = this;
-        break;
-
-    case recordTypes.ResourceReceiveResponse:
-    case recordTypes.ResourceReceivedData:
-    case recordTypes.ResourceFinish:
-        this._initiator = bindings._sendRequestRecords[timelineEvent.data["requestId"]];
-        break;
-
-    case recordTypes.TimerInstall:
-        bindings._timerRecords[timelineEvent.data["timerId"]] = this;
-        break;
-
-    case recordTypes.TimerFire:
-        this._initiator = bindings._timerRecords[timelineEvent.data["timerId"]];
-        break;
-
-    case recordTypes.RequestAnimationFrame:
-        bindings._requestAnimationFrameRecords[timelineEvent.data["id"]] = this;
-        break;
-
-    case recordTypes.FireAnimationFrame:
-        this._initiator = bindings._requestAnimationFrameRecords[timelineEvent.data["id"]];
-        break;
-
-    case recordTypes.ScheduleStyleRecalculation:
-        bindings._lastScheduleStyleRecalculation[this.frameId()] = this;
-        break;
-
-    case recordTypes.RecalculateStyles:
-        this._initiator = bindings._lastScheduleStyleRecalculation[this.frameId()];
-        break;
-
-    case recordTypes.InvalidateLayout:
-        // Consider style recalculation as a reason for layout invalidation,
-        // but only if we had no earlier layout invalidation records.
-        var layoutInitator = this;
-        if (!bindings._layoutInvalidate[this.frameId()] && parentRecord.type() === recordTypes.RecalculateStyles)
-            layoutInitator = parentRecord._initiator;
-        bindings._layoutInvalidate[this.frameId()] = layoutInitator;
-        break;
-
-    case recordTypes.Layout:
-        this._initiator = bindings._layoutInvalidate[this.frameId()];
-        bindings._layoutInvalidate[this.frameId()] = null;
-        if (this.stackTrace())
-            this.addWarning(WebInspector.UIString("Forced synchronous layout is a possible performance bottleneck."));
-        break;
-
-    case recordTypes.WebSocketCreate:
-        bindings._webSocketCreateRecords[timelineEvent.data["identifier"]] = this;
-        break;
-
-    case recordTypes.WebSocketSendHandshakeRequest:
-    case recordTypes.WebSocketReceiveHandshakeResponse:
-    case recordTypes.WebSocketDestroy:
-        this._initiator = bindings._webSocketCreateRecords[timelineEvent.data["identifier"]];
-        break;
-    }
-}
-
-WebInspector.TimelineModel.RecordImpl.prototype = {
-    /**
-     * @return {?Array.<!ConsoleAgent.CallFrame>}
-     */
-    callSiteStackTrace: function()
-    {
-        return this._initiator ? this._initiator.stackTrace() : null;
-    },
-
-    /**
-     * @return {?WebInspector.TimelineModel.Record}
-     */
-    initiator: function()
-    {
-        return this._initiator;
-    },
-
-    /**
-     * @return {?WebInspector.Target}
-     */
-    target: function()
-    {
-        return this._model._currentTarget;
-    },
-
-    /**
-     * @return {number}
-     */
-    selfTime: function()
-    {
-        return this._selfTime;
-    },
-
-    /**
-     * @return {!Array.<!WebInspector.TimelineModel.Record>}
-     */
-    children: function()
-    {
-        return this._children;
-    },
-
-    /**
-     * @return {number}
-     */
-    startTime: function()
-    {
-        return this._record.startTime;
-    },
-
-    /**
-     * @return {string}
-     */
-    thread: function()
-    {
-        return this._thread;
-    },
-
-    /**
-     * @return {number}
-     */
-    endTime: function()
-    {
-        return this._endTime || this._record.endTime || this._record.startTime;
-    },
-
-    /**
-     * @param {number} endTime
-     */
-    setEndTime: function(endTime)
-    {
-        this._endTime = endTime;
-    },
-
-    /**
-     * @return {!Object}
-     */
-    data: function()
-    {
-        return this._record.data;
-    },
-
-    /**
-     * @return {string}
-     */
-    type: function()
-    {
-        return this._record.type;
-    },
-
-    /**
-     * @return {string}
-     */
-    frameId: function()
-    {
-        return this._record.frameId || "";
-    },
-
-    /**
-     * @return {?Array.<!ConsoleAgent.CallFrame>}
-     */
-    stackTrace: function()
-    {
-        if (this._record.stackTrace && this._record.stackTrace.length)
-            return this._record.stackTrace;
-        return null;
-    },
-
-    /**
-     * @param {string} key
-     * @return {?Object}
-     */
-    getUserObject: function(key)
-    {
-        if (!this._userObjects)
-            return null;
-        return this._userObjects.get(key);
-    },
-
-    /**
-     * @param {string} key
-     * @param {?Object|undefined} value
-     */
-    setUserObject: function(key, value)
-    {
-        if (!this._userObjects)
-            this._userObjects = new Map();
-        this._userObjects.set(key, value);
-    },
-
-    /**
-     * @param {string} message
-     */
-    addWarning: function(message)
-    {
-        if (!this._warnings)
-            this._warnings = [];
-        this._warnings.push(message);
-    },
-
-    /**
-     * @return {?Array.<string>}
-     */
-    warnings: function()
-    {
-        return this._warnings;
-    }
-}
-
-/**
- * @constructor
- * @implements {WebInspector.OutputStream}
- * @param {!WebInspector.TimelineModel} model
- * @param {!{cancel: function()}} reader
- * @param {!WebInspector.Progress} progress
- */
-WebInspector.TimelineModelLoader = function(model, reader, progress)
-{
-    this._model = model;
-    this._reader = reader;
-    this._progress = progress;
-    this._buffer = "";
-    this._firstChunk = true;
-}
-
-WebInspector.TimelineModelLoader.prototype = {
-    /**
-     * @param {string} chunk
-     */
-    write: function(chunk)
-    {
-        var data = this._buffer + chunk;
-        var lastIndex = 0;
-        var index;
-        do {
-            index = lastIndex;
-            lastIndex = WebInspector.TextUtils.findBalancedCurlyBrackets(data, index);
-        } while (lastIndex !== -1)
-
-        var json = data.slice(0, index) + "]";
-        this._buffer = data.slice(index);
-
-        if (!index)
-            return;
-
-        if (this._firstChunk) {
-            this._firstChunk = false;
-            this._model.reset();
-        } else {
-            // Prepending "0" to turn string into valid JSON.
-            json = "[0" + json;
-        }
-
-        var items;
-        try {
-            items = /** @type {!Array.<!TimelineAgent.TimelineEvent>} */ (JSON.parse(json));
-        } catch (e) {
-            WebInspector.console.error("Malformed timeline data.");
-            this._model.reset();
-            this._reader.cancel();
-            this._progress.done();
-            return;
-        }
-
-        // Skip 0-th element - it is either version or 0.
-        for (var i = 1, size = items.length; i < size; ++i)
-            this._model._addRecord(items[i]);
-    },
-
-    close: function()
-    {
-    }
-}
-
-/**
- * @constructor
- * @param {!WebInspector.OutputStream} stream
- */
-WebInspector.TimelineSaver = function(stream)
-{
-    this._stream = stream;
-}
-
-WebInspector.TimelineSaver.prototype = {
-    /**
-     * @param {!Array.<*>} payloads
-     * @param {string} version
-     */
-    save: function(payloads, version)
-    {
-        this._payloads = payloads;
-        this._recordIndex = 0;
-        this._prologue = "[" + JSON.stringify(version);
-
-        this._writeNextChunk(this._stream);
-    },
-
-    _writeNextChunk: function(stream)
-    {
-        const separator = ",\n";
-        var data = [];
-        var length = 0;
-
-        if (this._prologue) {
-            data.push(this._prologue);
-            length += this._prologue.length;
-            delete this._prologue;
-        } else {
-            if (this._recordIndex === this._payloads.length) {
-                stream.close();
-                return;
-            }
-            data.push("");
-        }
-        while (this._recordIndex < this._payloads.length) {
-            var item = JSON.stringify(this._payloads[this._recordIndex]);
-            var itemLength = item.length + separator.length;
-            if (length + itemLength > WebInspector.TimelineModelImpl.TransferChunkLengthBytes)
-                break;
-            length += itemLength;
-            data.push(item);
-            ++this._recordIndex;
-        }
-        if (this._recordIndex === this._payloads.length)
-            data.push(data.pop() + "]");
-        stream.write(data.join(separator), this._writeNextChunk.bind(this));
-    }
-}