Source/WebInspectorUI/UserInterface/Controllers/JavaScriptLogViewController.js - WebKit - Git at Google

 /*
  * Copyright (C) 2013 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.JavaScriptLogViewController = class JavaScriptLogViewController extends WebInspector.Object
 {
     constructor(element, scrollElement, textPrompt, delegate, historySettingIdentifier)
     {
         super();

         console.assert(textPrompt instanceof WebInspector.ConsolePrompt);
         console.assert(historySettingIdentifier);

         this._element = element;
         this._scrollElement = scrollElement;

         this._promptHistorySetting = new WebInspector.Setting(historySettingIdentifier, null);

         this._prompt = textPrompt;
         this._prompt.delegate = this;
         this._prompt.history = this._promptHistorySetting.value;

         this.delegate = delegate;

         this._cleared = true;
         this._previousMessageView = null;
         this._lastCommitted = "";
         this._repeatCountWasInterrupted = false;

         this._sessions = [];

         this.messagesClearKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl, "K", this._handleClearShortcut.bind(this));
         this.messagesAlternateClearKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.Control, "L", this._handleClearShortcut.bind(this), this._element);

         this._messagesFindNextKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl, "G", this._handleFindNextShortcut.bind(this), this._element);
         this._messagesFindPreviousKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl | WebInspector.KeyboardShortcut.Modifier.Shift, "G", this._handleFindPreviousShortcut.bind(this), this._element);

         this._promptAlternateClearKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.Control, "L", this._handleClearShortcut.bind(this), this._prompt.element);
         this._promptFindNextKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl, "G", this._handleFindNextShortcut.bind(this), this._prompt.element);
         this._promptFindPreviousKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl | WebInspector.KeyboardShortcut.Modifier.Shift, "G", this._handleFindPreviousShortcut.bind(this), this._prompt.element);

         this._pendingMessages = [];
         this._scheduledRenderIdentifier = 0;

         this.startNewSession();
     }

     // Public

     get prompt()
     {
         return this._prompt;
     }

     get currentConsoleGroup()
     {
         return this._currentConsoleGroup;
     }

     clear()
     {
         this._cleared = true;

         const clearPreviousSessions = true;
         this.startNewSession(clearPreviousSessions, {newSessionReason: WebInspector.ConsoleSession.NewSessionReason.ConsoleCleared});
     }

     startNewSession(clearPreviousSessions = false, data = {})
     {
         if (this._sessions.length && clearPreviousSessions) {
             for (var i = 0; i < this._sessions.length; ++i)
                 this._element.removeChild(this._sessions[i].element);

             this._sessions = [];
             this._currentConsoleGroup = null;
         }

         // First session shows the time when the console was opened.
         if (!this._sessions.length)
             data.timestamp = Date.now();

         let lastSession = this._sessions.lastValue;

         // Remove empty session.
         if (lastSession && !lastSession.hasMessages()) {
             this._sessions.pop();
             lastSession.element.remove();
         }

         let consoleSession = new WebInspector.ConsoleSession(data);

         this._previousMessageView = null;
         this._lastCommitted = "";
         this._repeatCountWasInterrupted = false;

         this._sessions.push(consoleSession);
         this._currentConsoleGroup = consoleSession;

         this._element.appendChild(consoleSession.element);

         // Make sure the new session is visible.
         consoleSession.element.scrollIntoView();
     }

     appendImmediateExecutionWithResult(text, result, addSpecialUserLogClass, shouldRevealConsole)
     {
         console.assert(result instanceof WebInspector.RemoteObject);

         var commandMessageView = new WebInspector.ConsoleCommandView(text, addSpecialUserLogClass ? "special-user-log" : null);
         this._appendConsoleMessageView(commandMessageView, true);

         function saveResultCallback(savedResultIndex)
         {
             let commandResultMessage = new WebInspector.ConsoleCommandResultMessage(result, false, savedResultIndex, shouldRevealConsole);
             let commandResultMessageView = new WebInspector.ConsoleMessageView(commandResultMessage);
             this._appendConsoleMessageView(commandResultMessageView, true);
         }

         WebInspector.runtimeManager.saveResult(result, saveResultCallback.bind(this));
     }

     appendConsoleMessage(consoleMessage)
     {
         var consoleMessageView = new WebInspector.ConsoleMessageView(consoleMessage);
         this._appendConsoleMessageView(consoleMessageView);
         return consoleMessageView;
     }

     updatePreviousMessageRepeatCount(count)
     {
         console.assert(this._previousMessageView);
         if (!this._previousMessageView)
             return false;

         var previousIgnoredCount = this._previousMessageView[WebInspector.JavaScriptLogViewController.IgnoredRepeatCount] || 0;
         var previousVisibleCount = this._previousMessageView.repeatCount;

         if (!this._repeatCountWasInterrupted) {
             this._previousMessageView.repeatCount = count - previousIgnoredCount;
             return true;
         }

         var consoleMessage = this._previousMessageView.message;
         var duplicatedConsoleMessageView = new WebInspector.ConsoleMessageView(consoleMessage);
         duplicatedConsoleMessageView[WebInspector.JavaScriptLogViewController.IgnoredRepeatCount] = previousIgnoredCount + previousVisibleCount;
         duplicatedConsoleMessageView.repeatCount = 1;
         this._appendConsoleMessageView(duplicatedConsoleMessageView);

         return true;
     }

     isScrolledToBottom()
     {
         // Lie about being scrolled to the bottom if we have a pending request to scroll to the bottom soon.
         return this._scrollToBottomTimeout || this._scrollElement.isScrolledToBottom();
     }

     scrollToBottom()
     {
         if (this._scrollToBottomTimeout)
             return;

         function delayedWork()
         {
             this._scrollToBottomTimeout = null;
             this._scrollElement.scrollTop = this._scrollElement.scrollHeight;
         }

         // Don't scroll immediately so we are not causing excessive layouts when there
         // are many messages being added at once.
         this._scrollToBottomTimeout = setTimeout(delayedWork.bind(this), 0);
     }

     // Protected

     consolePromptHistoryDidChange(prompt)
     {
         this._promptHistorySetting.value = this.prompt.history;
     }

     consolePromptShouldCommitText(prompt, text, cursorIsAtLastPosition, handler)
     {
         // Always commit the text if we are not at the last position.
         if (!cursorIsAtLastPosition) {
             handler(true);
             return;
         }

         function parseFinished(error, result, message, range)
         {
             handler(result !== RuntimeAgent.SyntaxErrorType.Recoverable);
         }

         RuntimeAgent.parse(text, parseFinished.bind(this));
     }

     consolePromptTextCommitted(prompt, text)
     {
         console.assert(text);

         if (this._lastCommitted !== text) {
             let commandMessageView = new WebInspector.ConsoleCommandView(text);
             this._appendConsoleMessageView(commandMessageView, true);
             this._lastCommitted = text;
         }

         function printResult(result, wasThrown, savedResultIndex)
         {
             if (!result || this._cleared)
                 return;

             let shouldRevealConsole = true;
             let commandResultMessage = new WebInspector.ConsoleCommandResultMessage(result, wasThrown, savedResultIndex, shouldRevealConsole);
             let commandResultMessageView = new WebInspector.ConsoleMessageView(commandResultMessage);
             this._appendConsoleMessageView(commandResultMessageView, true);
         }

         let options = {
             objectGroup: WebInspector.RuntimeManager.ConsoleObjectGroup,
             includeCommandLineAPI: true,
             doNotPauseOnExceptionsAndMuteConsole: false,
             returnByValue: false,
             generatePreview: true,
             saveResult: true,
             sourceURLAppender: appendWebInspectorConsoleEvaluationSourceURL,
         };

         WebInspector.runtimeManager.evaluateInInspectedWindow(text, options, printResult.bind(this));
     }

     // Private

     _handleClearShortcut()
     {
         WebInspector.logManager.requestClearMessages();
     }

     _handleFindNextShortcut()
     {
         this.delegate.highlightNextSearchMatch();
     }

     _handleFindPreviousShortcut()
     {
         this.delegate.highlightPreviousSearchMatch();
     }

     _appendConsoleMessageView(messageView, repeatCountWasInterrupted)
     {
         this._pendingMessages.push(messageView);

         this._cleared = false;
         this._repeatCountWasInterrupted = repeatCountWasInterrupted || false;

         if (!repeatCountWasInterrupted)
             this._previousMessageView = messageView;

         if (messageView.message && messageView.message.source !== WebInspector.ConsoleMessage.MessageSource.JS)
             this._lastCommitted = "";

         if (WebInspector.consoleContentView.visible)
             this.renderPendingMessagesSoon();

         if (!WebInspector.isShowingConsoleTab() && messageView.message && messageView.message.shouldRevealConsole)
             WebInspector.showSplitConsole();
     }

     renderPendingMessages()
     {
         if (this._scheduledRenderIdentifier) {
             cancelAnimationFrame(this._scheduledRenderIdentifier);
             this._scheduledRenderIdentifier = 0;
         }

         if (this._pendingMessages.length === 0)
             return;

         const maxMessagesPerFrame = 100;
         let messages = this._pendingMessages.splice(0, maxMessagesPerFrame);

         let lastMessageView = messages.lastValue;
         let isCommandView = lastMessageView instanceof WebInspector.ConsoleCommandView;
         let shouldScrollToBottom = isCommandView || lastMessageView.message.type === WebInspector.ConsoleMessage.MessageType.Result || this.isScrolledToBottom();

         for (let messageView of messages) {
             messageView.render();
             this._didRenderConsoleMessageView(messageView);
         }

         if (shouldScrollToBottom)
             this.scrollToBottom();

         WebInspector.quickConsole.needsLayout();

         if (this._pendingMessages.length > 0)
             this.renderPendingMessagesSoon();
     }

     renderPendingMessagesSoon()
     {
         if (this._scheduledRenderIdentifier)
             return;

         this._scheduledRenderIdentifier = requestAnimationFrame(() => this.renderPendingMessages());
     }

     _didRenderConsoleMessageView(messageView)
     {
         var type = messageView instanceof WebInspector.ConsoleCommandView ? null : messageView.message.type;
         if (type === WebInspector.ConsoleMessage.MessageType.EndGroup) {
             var parentGroup = this._currentConsoleGroup.parentGroup;
             if (parentGroup)
                 this._currentConsoleGroup = parentGroup;
         } else {
             if (type === WebInspector.ConsoleMessage.MessageType.StartGroup || type === WebInspector.ConsoleMessage.MessageType.StartGroupCollapsed) {
                 var group = new WebInspector.ConsoleGroup(this._currentConsoleGroup);
                 var groupElement = group.render(messageView);
                 this._currentConsoleGroup.append(groupElement);
                 this._currentConsoleGroup = group;
             } else
                 this._currentConsoleGroup.addMessageView(messageView);
         }

         if (this.delegate && typeof this.delegate.didAppendConsoleMessageView === "function")
             this.delegate.didAppendConsoleMessageView(messageView);
     }
 };

 WebInspector.JavaScriptLogViewController.CachedPropertiesDuration = 30000;
 WebInspector.JavaScriptLogViewController.IgnoredRepeatCount = Symbol("ignored-repeat-count");
	/*
	* Copyright (C) 2013 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.JavaScriptLogViewController = class JavaScriptLogViewController extends WebInspector.Object
	{
	constructor(element, scrollElement, textPrompt, delegate, historySettingIdentifier)
	{
	super();

	console.assert(textPrompt instanceof WebInspector.ConsolePrompt);
	console.assert(historySettingIdentifier);

	this._element = element;
	this._scrollElement = scrollElement;

	this._promptHistorySetting = new WebInspector.Setting(historySettingIdentifier, null);

	this._prompt = textPrompt;
	this._prompt.delegate = this;
	this._prompt.history = this._promptHistorySetting.value;

	this.delegate = delegate;

	this._cleared = true;
	this._previousMessageView = null;
	this._lastCommitted = "";
	this._repeatCountWasInterrupted = false;

	this._sessions = [];

	this.messagesClearKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl, "K", this._handleClearShortcut.bind(this));
	this.messagesAlternateClearKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.Control, "L", this._handleClearShortcut.bind(this), this._element);

	this._messagesFindNextKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl, "G", this._handleFindNextShortcut.bind(this), this._element);
	this._messagesFindPreviousKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl \| WebInspector.KeyboardShortcut.Modifier.Shift, "G", this._handleFindPreviousShortcut.bind(this), this._element);

	this._promptAlternateClearKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.Control, "L", this._handleClearShortcut.bind(this), this._prompt.element);
	this._promptFindNextKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl, "G", this._handleFindNextShortcut.bind(this), this._prompt.element);
	this._promptFindPreviousKeyboardShortcut = new WebInspector.KeyboardShortcut(WebInspector.KeyboardShortcut.Modifier.CommandOrControl \| WebInspector.KeyboardShortcut.Modifier.Shift, "G", this._handleFindPreviousShortcut.bind(this), this._prompt.element);

	this._pendingMessages = [];
	this._scheduledRenderIdentifier = 0;

	this.startNewSession();
	}

	// Public

	get prompt()
	{
	return this._prompt;
	}

	get currentConsoleGroup()
	{
	return this._currentConsoleGroup;
	}

	clear()
	{
	this._cleared = true;

	const clearPreviousSessions = true;
	this.startNewSession(clearPreviousSessions, {newSessionReason: WebInspector.ConsoleSession.NewSessionReason.ConsoleCleared});
	}

	startNewSession(clearPreviousSessions = false, data = {})
	{
	if (this._sessions.length && clearPreviousSessions) {
	for (var i = 0; i < this._sessions.length; ++i)
	this._element.removeChild(this._sessions[i].element);

	this._sessions = [];
	this._currentConsoleGroup = null;
	}

	// First session shows the time when the console was opened.
	if (!this._sessions.length)
	data.timestamp = Date.now();

	let lastSession = this._sessions.lastValue;

	// Remove empty session.
	if (lastSession && !lastSession.hasMessages()) {
	this._sessions.pop();
	lastSession.element.remove();
	}

	let consoleSession = new WebInspector.ConsoleSession(data);

	this._previousMessageView = null;
	this._lastCommitted = "";
	this._repeatCountWasInterrupted = false;

	this._sessions.push(consoleSession);
	this._currentConsoleGroup = consoleSession;

	this._element.appendChild(consoleSession.element);

	// Make sure the new session is visible.
	consoleSession.element.scrollIntoView();
	}

	appendImmediateExecutionWithResult(text, result, addSpecialUserLogClass, shouldRevealConsole)
	{
	console.assert(result instanceof WebInspector.RemoteObject);

	var commandMessageView = new WebInspector.ConsoleCommandView(text, addSpecialUserLogClass ? "special-user-log" : null);
	this._appendConsoleMessageView(commandMessageView, true);

	function saveResultCallback(savedResultIndex)
	{
	let commandResultMessage = new WebInspector.ConsoleCommandResultMessage(result, false, savedResultIndex, shouldRevealConsole);
	let commandResultMessageView = new WebInspector.ConsoleMessageView(commandResultMessage);
	this._appendConsoleMessageView(commandResultMessageView, true);
	}

	WebInspector.runtimeManager.saveResult(result, saveResultCallback.bind(this));
	}

	appendConsoleMessage(consoleMessage)
	{
	var consoleMessageView = new WebInspector.ConsoleMessageView(consoleMessage);
	this._appendConsoleMessageView(consoleMessageView);
	return consoleMessageView;
	}

	updatePreviousMessageRepeatCount(count)
	{
	console.assert(this._previousMessageView);
	if (!this._previousMessageView)
	return false;

	var previousIgnoredCount = this._previousMessageView[WebInspector.JavaScriptLogViewController.IgnoredRepeatCount] \|\| 0;
	var previousVisibleCount = this._previousMessageView.repeatCount;

	if (!this._repeatCountWasInterrupted) {
	this._previousMessageView.repeatCount = count - previousIgnoredCount;
	return true;
	}

	var consoleMessage = this._previousMessageView.message;
	var duplicatedConsoleMessageView = new WebInspector.ConsoleMessageView(consoleMessage);
	duplicatedConsoleMessageView[WebInspector.JavaScriptLogViewController.IgnoredRepeatCount] = previousIgnoredCount + previousVisibleCount;
	duplicatedConsoleMessageView.repeatCount = 1;
	this._appendConsoleMessageView(duplicatedConsoleMessageView);

	return true;
	}

	isScrolledToBottom()
	{
	// Lie about being scrolled to the bottom if we have a pending request to scroll to the bottom soon.
	return this._scrollToBottomTimeout \|\| this._scrollElement.isScrolledToBottom();
	}

	scrollToBottom()
	{
	if (this._scrollToBottomTimeout)
	return;

	function delayedWork()
	{
	this._scrollToBottomTimeout = null;
	this._scrollElement.scrollTop = this._scrollElement.scrollHeight;
	}

	// Don't scroll immediately so we are not causing excessive layouts when there
	// are many messages being added at once.
	this._scrollToBottomTimeout = setTimeout(delayedWork.bind(this), 0);
	}

	// Protected

	consolePromptHistoryDidChange(prompt)
	{
	this._promptHistorySetting.value = this.prompt.history;
	}

	consolePromptShouldCommitText(prompt, text, cursorIsAtLastPosition, handler)
	{
	// Always commit the text if we are not at the last position.
	if (!cursorIsAtLastPosition) {
	handler(true);
	return;
	}

	function parseFinished(error, result, message, range)
	{
	handler(result !== RuntimeAgent.SyntaxErrorType.Recoverable);
	}

	RuntimeAgent.parse(text, parseFinished.bind(this));
	}

	consolePromptTextCommitted(prompt, text)
	{
	console.assert(text);

	if (this._lastCommitted !== text) {
	let commandMessageView = new WebInspector.ConsoleCommandView(text);
	this._appendConsoleMessageView(commandMessageView, true);
	this._lastCommitted = text;
	}

	function printResult(result, wasThrown, savedResultIndex)
	{
	if (!result \|\| this._cleared)
	return;

	let shouldRevealConsole = true;
	let commandResultMessage = new WebInspector.ConsoleCommandResultMessage(result, wasThrown, savedResultIndex, shouldRevealConsole);
	let commandResultMessageView = new WebInspector.ConsoleMessageView(commandResultMessage);
	this._appendConsoleMessageView(commandResultMessageView, true);
	}

	let options = {
	objectGroup: WebInspector.RuntimeManager.ConsoleObjectGroup,
	includeCommandLineAPI: true,
	doNotPauseOnExceptionsAndMuteConsole: false,
	returnByValue: false,
	generatePreview: true,
	saveResult: true,
	sourceURLAppender: appendWebInspectorConsoleEvaluationSourceURL,
	};

	WebInspector.runtimeManager.evaluateInInspectedWindow(text, options, printResult.bind(this));
	}

	// Private

	_handleClearShortcut()
	{
	WebInspector.logManager.requestClearMessages();
	}

	_handleFindNextShortcut()
	{
	this.delegate.highlightNextSearchMatch();
	}

	_handleFindPreviousShortcut()
	{
	this.delegate.highlightPreviousSearchMatch();
	}

	_appendConsoleMessageView(messageView, repeatCountWasInterrupted)
	{
	this._pendingMessages.push(messageView);

	this._cleared = false;
	this._repeatCountWasInterrupted = repeatCountWasInterrupted \|\| false;

	if (!repeatCountWasInterrupted)
	this._previousMessageView = messageView;

	if (messageView.message && messageView.message.source !== WebInspector.ConsoleMessage.MessageSource.JS)
	this._lastCommitted = "";

	if (WebInspector.consoleContentView.visible)
	this.renderPendingMessagesSoon();

	if (!WebInspector.isShowingConsoleTab() && messageView.message && messageView.message.shouldRevealConsole)
	WebInspector.showSplitConsole();
	}

	renderPendingMessages()
	{
	if (this._scheduledRenderIdentifier) {
	cancelAnimationFrame(this._scheduledRenderIdentifier);
	this._scheduledRenderIdentifier = 0;
	}

	if (this._pendingMessages.length === 0)
	return;

	const maxMessagesPerFrame = 100;
	let messages = this._pendingMessages.splice(0, maxMessagesPerFrame);

	let lastMessageView = messages.lastValue;
	let isCommandView = lastMessageView instanceof WebInspector.ConsoleCommandView;
	let shouldScrollToBottom = isCommandView \|\| lastMessageView.message.type === WebInspector.ConsoleMessage.MessageType.Result \|\| this.isScrolledToBottom();

	for (let messageView of messages) {
	messageView.render();
	this._didRenderConsoleMessageView(messageView);
	}

	if (shouldScrollToBottom)
	this.scrollToBottom();

	WebInspector.quickConsole.needsLayout();

	if (this._pendingMessages.length > 0)
	this.renderPendingMessagesSoon();
	}

	renderPendingMessagesSoon()
	{
	if (this._scheduledRenderIdentifier)
	return;

	this._scheduledRenderIdentifier = requestAnimationFrame(() => this.renderPendingMessages());
	}

	_didRenderConsoleMessageView(messageView)
	{
	var type = messageView instanceof WebInspector.ConsoleCommandView ? null : messageView.message.type;
	if (type === WebInspector.ConsoleMessage.MessageType.EndGroup) {
	var parentGroup = this._currentConsoleGroup.parentGroup;
	if (parentGroup)
	this._currentConsoleGroup = parentGroup;
	} else {
	if (type === WebInspector.ConsoleMessage.MessageType.StartGroup \|\| type === WebInspector.ConsoleMessage.MessageType.StartGroupCollapsed) {
	var group = new WebInspector.ConsoleGroup(this._currentConsoleGroup);
	var groupElement = group.render(messageView);
	this._currentConsoleGroup.append(groupElement);
	this._currentConsoleGroup = group;
	} else
	this._currentConsoleGroup.addMessageView(messageView);
	}

	if (this.delegate && typeof this.delegate.didAppendConsoleMessageView === "function")
	this.delegate.didAppendConsoleMessageView(messageView);
	}
	};

	WebInspector.JavaScriptLogViewController.CachedPropertiesDuration = 30000;
	WebInspector.JavaScriptLogViewController.IgnoredRepeatCount = Symbol("ignored-repeat-count");