Source/WebInspectorUI/UserInterface/Views/SettingsTabContentView.js - WebKit - Git at Google

 /*
  * Copyright (C) 2015-2017 Apple Inc. All rights reserved.
  * Copyright (C) 2016 Devin Rousso <webkit@devinrousso.com>. 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.
  */

 WI.SettingsTabContentView = class SettingsTabContentView extends WI.TabContentView
 {
     constructor(identifier)
     {
         let tabBarItem = WI.PinnedTabBarItem.fromTabInfo(WI.SettingsTabContentView.tabInfo());

         super(identifier || "settings", "settings", tabBarItem);

         // Ensures that the Settings tab is displayable from a pinned tab bar item.
         tabBarItem.representedObject = this;

         this._selectedSettingsView = null;
         this._settingsViews = [];
     }

     static tabInfo()
     {
         return {
             image: "Images/Gear.svg",
             title: WI.UIString("Settings"),
             isEphemeral: true,
         };
     }

     static shouldSaveTab()
     {
         return false;
     }

     // Public

     get type() { return WI.SettingsTabContentView.Type; }

     get supportsSplitContentBrowser()
     {
         return false;
     }

     get selectedSettingsView()
     {
         return this._selectedSettingsView;
     }

     set selectedSettingsView(settingsView)
     {
         if (this._selectedSettingsView === settingsView)
             return;

         if (this._selectedSettingsView)
             this.replaceSubview(this._selectedSettingsView, settingsView);
         else
             this.addSubview(settingsView);

         this._selectedSettingsView = settingsView;
         this._selectedSettingsView.updateLayout();

         let navigationItem = this._navigationBar.findNavigationItem(settingsView.identifier);
         console.assert(navigationItem, "Missing navigation item for settings view.", settingsView);
         if (!navigationItem)
             return;

         this._navigationBar.selectedNavigationItem = navigationItem;
     }

     addSettingsView(settingsView)
     {
         if (this._settingsViews.includes(settingsView)) {
             console.assert(false, "SettingsView already exists.", settingsView);
             return;
         }

         this._settingsViews.push(settingsView);
         this._navigationBar.addNavigationItem(new WI.RadioButtonNavigationItem(settingsView.identifier, settingsView.displayName));

         this._updateNavigationBarVisibility();
     }

     setSettingsViewVisible(settingsView, visible)
     {
         let navigationItem = this._navigationBar.findNavigationItem(settingsView.identifier);
         console.assert(navigationItem, "Missing NavigationItem for identifier: " + settingsView.identifier);
         if (!navigationItem)
             return;

         if (navigationItem.hidden === !visible)
             return;

         navigationItem.hidden = !visible;
         settingsView.element.classList.toggle("hidden", !visible);

         this._updateNavigationBarVisibility();

         if (!this.selectedSettingsView) {
             if (visible)
                 this.selectedSettingsView = settingsView;
             return;
         }

         if (this.selectedSettingsView !== settingsView)
             return;

         let index = this._settingsViews.indexOf(settingsView);
         console.assert(index !== -1, "SettingsView not found.", settingsView);
         if (index === -1)
             return;

         let previousIndex = index;
         while (--previousIndex >= 0) {
             let previousNavigationItem = this._navigationBar.navigationItems[previousIndex];
             console.assert(previousNavigationItem);
             if (!previousNavigationItem || previousNavigationItem.hidden)
                 continue;

             this.selectedSettingsView = this._settingsViews[previousIndex];
             return;
         }

         let nextIndex = index;
         while (++nextIndex < this._settingsViews.length) {
             let nextNavigationItem = this._navigationBar.navigationItems[nextIndex];
             console.assert(nextNavigationItem);
             if (!nextNavigationItem || nextNavigationItem.hidden)
                 continue;

             this.selectedSettingsView = this._settingsViews[nextIndex];
             return;
         }
     }

     // Protected

     initialLayout()
     {
         this._navigationBar = new WI.NavigationBar;
         this._navigationBar.addEventListener(WI.NavigationBar.Event.NavigationItemSelected, this._navigationItemSelected, this);
         this.addSubview(this._navigationBar);

         this._createGeneralSettingsView();
         this._createExperimentalSettingsView();

         WI.notifications.addEventListener(WI.Notification.DebugUIEnabledDidChange, this._updateDebugSettingsViewVisibility, this);
         this._updateDebugSettingsViewVisibility();

         this.selectedSettingsView = this._settingsViews[0];
     }

     // Private

     _createGeneralSettingsView()
     {
         let generalSettingsView = new WI.SettingsView("general", WI.UIString("General"));

         const indentValues = [WI.UIString("Tabs"), WI.UIString("Spaces")];

         let indentEditor = generalSettingsView.addGroupWithCustomSetting(WI.UIString("Prefer indent using:"), WI.SettingEditor.Type.Select, {values: indentValues});
         indentEditor.value = indentValues[WI.settings.indentWithTabs.value ? 0 : 1];
         indentEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => {
             WI.settings.indentWithTabs.value = indentEditor.value === indentValues[0];
         });

         function addSpacesSetting(title, setting) {
             let editor = generalSettingsView.addSetting(title, setting, WI.UIString("spaces"), {min: 1});

             function updateLabel() {
                 editor.label = setting.value === 1 ? WI.UIString("space") : WI.UIString("spaces");
             }
             setting.addEventListener(WI.Setting.Event.Changed, (event) => {
                 updateLabel();
             });
             updateLabel();
         }
         addSpacesSetting(WI.UIString("Tab width:"), WI.settings.tabSize);
         addSpacesSetting(WI.UIString("Indent width:"), WI.settings.indentUnit);

         generalSettingsView.addSetting(WI.UIString("Line wrapping:"), WI.settings.enableLineWrapping, WI.UIString("Wrap lines to editor width"));

         let showGroup = generalSettingsView.addGroup(WI.UIString("Show:"));
         showGroup.addSetting(WI.settings.showWhitespaceCharacters, WI.UIString("Whitespace characters"));
         showGroup.addSetting(WI.settings.showInvalidCharacters, WI.UIString("Invalid characters"));

         generalSettingsView.addSeparator();

         generalSettingsView.addSetting(WI.UIString("Debugger:"), WI.settings.showScopeChainOnPause, WI.UIString("Show Scope Chain on pause"));
         generalSettingsView.addSetting(WI.UIString("Source maps:"), WI.settings.sourceMapsEnabled, WI.UIString("Enable source maps"));
         generalSettingsView.addSetting(WI.UIString("Console:"), WI.settings.consoleAutoExpandTrace, WI.UIString("Auto-expand Traces"));

         generalSettingsView.addSeparator();

         let searchGroup = generalSettingsView.addGroup(WI.UIString("Search:", "Search: @ Settings", "Settings tab label for search related settings"));
         searchGroup.addSetting(WI.settings.searchCaseSensitive, WI.UIString("Case Sensitive", "Case Sensitive @ Settings", "Settings tab checkbox label for whether searches should be case sensitive."));
         searchGroup.addSetting(WI.settings.searchRegularExpression, WI.UIString("Regular Expression", "Regular Expression @ Settings", "Settings tab checkbox label for whether searches should be treated as regular expressions."));

         generalSettingsView.addSeparator();

         generalSettingsView.addSetting(WI.UIString("CSS Changes:"), WI.settings.cssChangesPerNode, WI.UIString("Show only for selected node"));

         generalSettingsView.addSeparator();

         const zoomLevels = [0.6, 0.8, 1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.4];
         const zoomValues = zoomLevels.map((level) => [level, Number.percentageString(level, 0)]);

         let zoomEditor = generalSettingsView.addGroupWithCustomSetting(WI.UIString("Zoom:"), WI.SettingEditor.Type.Select, {values: zoomValues});
         zoomEditor.value = WI.getZoomFactor();
         zoomEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => { WI.setZoomFactor(zoomEditor.value); });
         WI.settings.zoomFactor.addEventListener(WI.Setting.Event.Changed, () => { zoomEditor.value = WI.getZoomFactor().maxDecimals(2); });

         if (WI.ConsoleManager.supportsLogChannels()) {
             const logLevels = [
                 [WI.LoggingChannel.Level.Off, WI.UIString("Off")],
                 [WI.LoggingChannel.Level.Basic, WI.UIString("Basic")],
                 [WI.LoggingChannel.Level.Verbose, WI.UIString("Verbose")],
             ];
             const editorLabels = {
                 media: WI.UIString("Media Logging:"),
                 mediasource: WI.UIString("MSE Logging:"),
                 webrtc: WI.UIString("WebRTC Logging:"),
             };

             let channels = WI.consoleManager.customLoggingChannels;
             for (let channel of channels) {
                 let logEditor = generalSettingsView.addGroupWithCustomSetting(editorLabels[channel.source], WI.SettingEditor.Type.Select, {values: logLevels});
                 logEditor.value = channel.level;
                 logEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => {
                     for (let target of WI.targets)
                         target.ConsoleAgent.setLoggingChannelLevel(channel.source, logEditor.value);
                 });
             }
         }

         this.addSettingsView(generalSettingsView);
     }

     _createExperimentalSettingsView()
     {
         let experimentalSettingsView = new WI.SettingsView("experimental", WI.UIString("Experimental"));

         let initialValues = new Map;

         experimentalSettingsView.addSetting(WI.UIString("Sources:"), WI.settings.experimentalEnableSourcesTab, WI.UIString("Enable Sources Tab"));
         experimentalSettingsView.addSeparator();

         if (window.LayerTreeAgent) {
             experimentalSettingsView.addSetting(WI.UIString("Layers:"), WI.settings.experimentalEnableLayersTab, WI.UIString("Enable Layers Tab"));
             experimentalSettingsView.addSeparator();
         }

         experimentalSettingsView.addSetting(WI.UIString("User Interface:"), WI.settings.experimentalEnableNewTabBar, WI.UIString("Enable New Tab Bar"));
         experimentalSettingsView.addSeparator();

         experimentalSettingsView.addSetting(WI.UIString("Styles:"), WI.settings.experimentalEnableStylesJumpToEffective, WI.UIString("Show Jump to Effective Property Button"));
         experimentalSettingsView.addSeparator();

         let reloadInspectorButton = document.createElement("button");
         reloadInspectorButton.textContent = WI.UIString("Reload Web Inspector");
         reloadInspectorButton.addEventListener("click", (event) => {
             // Force a copy so that WI.Setting sees it as a new value.
             let newTabs = WI._openTabsSetting.value.slice();
             if (!initialValues.get(WI.settings.experimentalEnableSourcesTab) && WI.settings.experimentalEnableSourcesTab.value)
                 newTabs.push(WI.SourcesTabContentView.Type);
             if (!initialValues.get(WI.settings.experimentalEnableLayersTab) && window.LayerTreeAgent && WI.settings.experimentalEnableLayersTab.value)
                 newTabs.push(WI.LayersTabContentView.Type);
             WI._openTabsSetting.value = newTabs;

             InspectorFrontendHost.reopen();
         });

         let reloadInspectorContainerElement = experimentalSettingsView.addCenteredContainer(reloadInspectorButton, WI.UIString("for changes to take effect"));
         reloadInspectorContainerElement.classList.add("hidden");

         function listenForChange(setting) {
             initialValues.set(setting, setting.value);
             setting.addEventListener(WI.Setting.Event.Changed, () => {
                 reloadInspectorContainerElement.classList.toggle("hidden", Array.from(initialValues).every(([setting, initialValue]) => setting.value === initialValue));
             });
         }

         listenForChange(WI.settings.experimentalEnableSourcesTab);
         listenForChange(WI.settings.experimentalEnableLayersTab);
         listenForChange(WI.settings.experimentalEnableNewTabBar);
         listenForChange(WI.settings.experimentalEnableStylesJumpToEffective);

         this.addSettingsView(experimentalSettingsView);
     }

     _createDebugSettingsView()
     {
         if (this._debugSettingsView)
             return;

         // These settings are only ever shown in engineering builds, so the strings are unlocalized.

         this._debugSettingsView = new WI.SettingsView("debug", WI.unlocalizedString("Debug"));

         let protocolMessagesGroup = this._debugSettingsView.addGroup(WI.unlocalizedString("Protocol Logging:"));

         let autoLogProtocolMessagesEditor = protocolMessagesGroup.addSetting(WI.settings.autoLogProtocolMessages, WI.unlocalizedString("Messages"));
         WI.settings.autoLogProtocolMessages.addEventListener(WI.Setting.Event.Changed, () => {
             autoLogProtocolMessagesEditor.value = InspectorBackend.dumpInspectorProtocolMessages;
         });

         protocolMessagesGroup.addSetting(WI.settings.autoLogTimeStats, WI.unlocalizedString("Time Stats"));

         this._debugSettingsView.addSeparator();

         this._debugSettingsView.addSetting(WI.unlocalizedString("Layout Flashing:"), WI.settings.enableLayoutFlashing, WI.unlocalizedString("Draw borders when a view performs a layout"));

         this._debugSettingsView.addSeparator();

         this._debugSettingsView.addSetting(WI.unlocalizedString("Styles:"), WI.settings.enableStyleEditingDebugMode, WI.unlocalizedString("Enable style editing debug mode"));

         this._debugSettingsView.addSeparator();

         this._debugSettingsView.addSetting(WI.unlocalizedString("Heap Snapshot:"), WI.settings.debugShowInternalObjectsInHeapSnapshot, WI.unlocalizedString("Show Internal Objects"));

         this._debugSettingsView.addSeparator();

         this._debugSettingsView.addSetting(WI.unlocalizedString("Debugging:"), WI.settings.pauseForInternalScripts, WI.unlocalizedString("Pause in WebKit-internal scripts"));

         this._debugSettingsView.addSetting(WI.unlocalizedString("Uncaught Exception Reporter:"), WI.settings.enableUncaughtExceptionReporter, WI.unlocalizedString("Enabled"));

         this._debugSettingsView.addSeparator();

         const layoutDirectionValues = [
             [WI.LayoutDirection.System, WI.unlocalizedString("System Default")],
             [WI.LayoutDirection.LTR, WI.unlocalizedString("Left to Right (LTR)")],
             [WI.LayoutDirection.RTL, WI.unlocalizedString("Right to Left (RTL)")],
         ];

         let layoutDirectionEditor = this._debugSettingsView.addGroupWithCustomSetting(WI.unlocalizedString("Layout Direction:"), WI.SettingEditor.Type.Select, {values: layoutDirectionValues});
         layoutDirectionEditor.value = WI.settings.layoutDirection.value;
         layoutDirectionEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => { WI.setLayoutDirection(layoutDirectionEditor.value); });

         this.addSettingsView(this._debugSettingsView);
     }

     _updateNavigationBarVisibility()
     {
         let visibleItems = 0;
         for (let item of this._navigationBar.navigationItems) {
             if (!item.hidden && ++visibleItems > 1) {
                 this._navigationBar.element.classList.remove("invisible");
                 return;
             }
         }

         this._navigationBar.element.classList.add("invisible");
     }

     _navigationItemSelected(event)
     {
         let navigationItem = event.target.selectedNavigationItem;
         if (!navigationItem)
             return;

         let settingsView = this._settingsViews.find((view) => view.identifier === navigationItem.identifier);
         console.assert(settingsView, "Missing SettingsView for identifier " + navigationItem.identifier);
         if (!settingsView)
             return;

         this.selectedSettingsView = settingsView;
     }

     _updateDebugSettingsViewVisibility()
     {
         // Only create the Debug view if the debug UI is enabled.
         if (WI.isDebugUIEnabled())
             this._createDebugSettingsView();

         if (!this._debugSettingsView)
             return;

         this.setSettingsViewVisible(this._debugSettingsView, WI.isDebugUIEnabled());

         this.needsLayout();
     }
 };

 WI.SettingsTabContentView.Type = "settings";
	/*
	* Copyright (C) 2015-2017 Apple Inc. All rights reserved.
	* Copyright (C) 2016 Devin Rousso <webkit@devinrousso.com>. 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.
	*/

	WI.SettingsTabContentView = class SettingsTabContentView extends WI.TabContentView
	{
	constructor(identifier)
	{
	let tabBarItem = WI.PinnedTabBarItem.fromTabInfo(WI.SettingsTabContentView.tabInfo());

	super(identifier \|\| "settings", "settings", tabBarItem);

	// Ensures that the Settings tab is displayable from a pinned tab bar item.
	tabBarItem.representedObject = this;

	this._selectedSettingsView = null;
	this._settingsViews = [];
	}

	static tabInfo()
	{
	return {
	image: "Images/Gear.svg",
	title: WI.UIString("Settings"),
	isEphemeral: true,
	};
	}

	static shouldSaveTab()
	{
	return false;
	}

	// Public

	get type() { return WI.SettingsTabContentView.Type; }

	get supportsSplitContentBrowser()
	{
	return false;
	}

	get selectedSettingsView()
	{
	return this._selectedSettingsView;
	}

	set selectedSettingsView(settingsView)
	{
	if (this._selectedSettingsView === settingsView)
	return;

	if (this._selectedSettingsView)
	this.replaceSubview(this._selectedSettingsView, settingsView);
	else
	this.addSubview(settingsView);

	this._selectedSettingsView = settingsView;
	this._selectedSettingsView.updateLayout();

	let navigationItem = this._navigationBar.findNavigationItem(settingsView.identifier);
	console.assert(navigationItem, "Missing navigation item for settings view.", settingsView);
	if (!navigationItem)
	return;

	this._navigationBar.selectedNavigationItem = navigationItem;
	}

	addSettingsView(settingsView)
	{
	if (this._settingsViews.includes(settingsView)) {
	console.assert(false, "SettingsView already exists.", settingsView);
	return;
	}

	this._settingsViews.push(settingsView);
	this._navigationBar.addNavigationItem(new WI.RadioButtonNavigationItem(settingsView.identifier, settingsView.displayName));

	this._updateNavigationBarVisibility();
	}

	setSettingsViewVisible(settingsView, visible)
	{
	let navigationItem = this._navigationBar.findNavigationItem(settingsView.identifier);
	console.assert(navigationItem, "Missing NavigationItem for identifier: " + settingsView.identifier);
	if (!navigationItem)
	return;

	if (navigationItem.hidden === !visible)
	return;

	navigationItem.hidden = !visible;
	settingsView.element.classList.toggle("hidden", !visible);

	this._updateNavigationBarVisibility();

	if (!this.selectedSettingsView) {
	if (visible)
	this.selectedSettingsView = settingsView;
	return;
	}

	if (this.selectedSettingsView !== settingsView)
	return;

	let index = this._settingsViews.indexOf(settingsView);
	console.assert(index !== -1, "SettingsView not found.", settingsView);
	if (index === -1)
	return;

	let previousIndex = index;
	while (--previousIndex >= 0) {
	let previousNavigationItem = this._navigationBar.navigationItems[previousIndex];
	console.assert(previousNavigationItem);
	if (!previousNavigationItem \|\| previousNavigationItem.hidden)
	continue;

	this.selectedSettingsView = this._settingsViews[previousIndex];
	return;
	}

	let nextIndex = index;
	while (++nextIndex < this._settingsViews.length) {
	let nextNavigationItem = this._navigationBar.navigationItems[nextIndex];
	console.assert(nextNavigationItem);
	if (!nextNavigationItem \|\| nextNavigationItem.hidden)
	continue;

	this.selectedSettingsView = this._settingsViews[nextIndex];
	return;
	}
	}

	// Protected

	initialLayout()
	{
	this._navigationBar = new WI.NavigationBar;
	this._navigationBar.addEventListener(WI.NavigationBar.Event.NavigationItemSelected, this._navigationItemSelected, this);
	this.addSubview(this._navigationBar);

	this._createGeneralSettingsView();
	this._createExperimentalSettingsView();

	WI.notifications.addEventListener(WI.Notification.DebugUIEnabledDidChange, this._updateDebugSettingsViewVisibility, this);
	this._updateDebugSettingsViewVisibility();

	this.selectedSettingsView = this._settingsViews[0];
	}

	// Private

	_createGeneralSettingsView()
	{
	let generalSettingsView = new WI.SettingsView("general", WI.UIString("General"));

	const indentValues = [WI.UIString("Tabs"), WI.UIString("Spaces")];

	let indentEditor = generalSettingsView.addGroupWithCustomSetting(WI.UIString("Prefer indent using:"), WI.SettingEditor.Type.Select, {values: indentValues});
	indentEditor.value = indentValues[WI.settings.indentWithTabs.value ? 0 : 1];
	indentEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => {
	WI.settings.indentWithTabs.value = indentEditor.value === indentValues[0];
	});

	function addSpacesSetting(title, setting) {
	let editor = generalSettingsView.addSetting(title, setting, WI.UIString("spaces"), {min: 1});

	function updateLabel() {
	editor.label = setting.value === 1 ? WI.UIString("space") : WI.UIString("spaces");
	}
	setting.addEventListener(WI.Setting.Event.Changed, (event) => {
	updateLabel();
	});
	updateLabel();
	}
	addSpacesSetting(WI.UIString("Tab width:"), WI.settings.tabSize);
	addSpacesSetting(WI.UIString("Indent width:"), WI.settings.indentUnit);

	generalSettingsView.addSetting(WI.UIString("Line wrapping:"), WI.settings.enableLineWrapping, WI.UIString("Wrap lines to editor width"));

	let showGroup = generalSettingsView.addGroup(WI.UIString("Show:"));
	showGroup.addSetting(WI.settings.showWhitespaceCharacters, WI.UIString("Whitespace characters"));
	showGroup.addSetting(WI.settings.showInvalidCharacters, WI.UIString("Invalid characters"));

	generalSettingsView.addSeparator();

	generalSettingsView.addSetting(WI.UIString("Debugger:"), WI.settings.showScopeChainOnPause, WI.UIString("Show Scope Chain on pause"));
	generalSettingsView.addSetting(WI.UIString("Source maps:"), WI.settings.sourceMapsEnabled, WI.UIString("Enable source maps"));
	generalSettingsView.addSetting(WI.UIString("Console:"), WI.settings.consoleAutoExpandTrace, WI.UIString("Auto-expand Traces"));

	generalSettingsView.addSeparator();

	let searchGroup = generalSettingsView.addGroup(WI.UIString("Search:", "Search: @ Settings", "Settings tab label for search related settings"));
	searchGroup.addSetting(WI.settings.searchCaseSensitive, WI.UIString("Case Sensitive", "Case Sensitive @ Settings", "Settings tab checkbox label for whether searches should be case sensitive."));
	searchGroup.addSetting(WI.settings.searchRegularExpression, WI.UIString("Regular Expression", "Regular Expression @ Settings", "Settings tab checkbox label for whether searches should be treated as regular expressions."));

	generalSettingsView.addSeparator();

	generalSettingsView.addSetting(WI.UIString("CSS Changes:"), WI.settings.cssChangesPerNode, WI.UIString("Show only for selected node"));

	generalSettingsView.addSeparator();

	const zoomLevels = [0.6, 0.8, 1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.4];
	const zoomValues = zoomLevels.map((level) => [level, Number.percentageString(level, 0)]);

	let zoomEditor = generalSettingsView.addGroupWithCustomSetting(WI.UIString("Zoom:"), WI.SettingEditor.Type.Select, {values: zoomValues});
	zoomEditor.value = WI.getZoomFactor();
	zoomEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => { WI.setZoomFactor(zoomEditor.value); });
	WI.settings.zoomFactor.addEventListener(WI.Setting.Event.Changed, () => { zoomEditor.value = WI.getZoomFactor().maxDecimals(2); });

	if (WI.ConsoleManager.supportsLogChannels()) {
	const logLevels = [
	[WI.LoggingChannel.Level.Off, WI.UIString("Off")],
	[WI.LoggingChannel.Level.Basic, WI.UIString("Basic")],
	[WI.LoggingChannel.Level.Verbose, WI.UIString("Verbose")],
	];
	const editorLabels = {
	media: WI.UIString("Media Logging:"),
	mediasource: WI.UIString("MSE Logging:"),
	webrtc: WI.UIString("WebRTC Logging:"),
	};

	let channels = WI.consoleManager.customLoggingChannels;
	for (let channel of channels) {
	let logEditor = generalSettingsView.addGroupWithCustomSetting(editorLabels[channel.source], WI.SettingEditor.Type.Select, {values: logLevels});
	logEditor.value = channel.level;
	logEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => {
	for (let target of WI.targets)
	target.ConsoleAgent.setLoggingChannelLevel(channel.source, logEditor.value);
	});
	}
	}

	this.addSettingsView(generalSettingsView);
	}

	_createExperimentalSettingsView()
	{
	let experimentalSettingsView = new WI.SettingsView("experimental", WI.UIString("Experimental"));

	let initialValues = new Map;

	experimentalSettingsView.addSetting(WI.UIString("Sources:"), WI.settings.experimentalEnableSourcesTab, WI.UIString("Enable Sources Tab"));
	experimentalSettingsView.addSeparator();

	if (window.LayerTreeAgent) {
	experimentalSettingsView.addSetting(WI.UIString("Layers:"), WI.settings.experimentalEnableLayersTab, WI.UIString("Enable Layers Tab"));
	experimentalSettingsView.addSeparator();
	}

	experimentalSettingsView.addSetting(WI.UIString("User Interface:"), WI.settings.experimentalEnableNewTabBar, WI.UIString("Enable New Tab Bar"));
	experimentalSettingsView.addSeparator();

	experimentalSettingsView.addSetting(WI.UIString("Styles:"), WI.settings.experimentalEnableStylesJumpToEffective, WI.UIString("Show Jump to Effective Property Button"));
	experimentalSettingsView.addSeparator();

	let reloadInspectorButton = document.createElement("button");
	reloadInspectorButton.textContent = WI.UIString("Reload Web Inspector");
	reloadInspectorButton.addEventListener("click", (event) => {
	// Force a copy so that WI.Setting sees it as a new value.
	let newTabs = WI._openTabsSetting.value.slice();
	if (!initialValues.get(WI.settings.experimentalEnableSourcesTab) && WI.settings.experimentalEnableSourcesTab.value)
	newTabs.push(WI.SourcesTabContentView.Type);
	if (!initialValues.get(WI.settings.experimentalEnableLayersTab) && window.LayerTreeAgent && WI.settings.experimentalEnableLayersTab.value)
	newTabs.push(WI.LayersTabContentView.Type);
	WI._openTabsSetting.value = newTabs;

	InspectorFrontendHost.reopen();
	});

	let reloadInspectorContainerElement = experimentalSettingsView.addCenteredContainer(reloadInspectorButton, WI.UIString("for changes to take effect"));
	reloadInspectorContainerElement.classList.add("hidden");

	function listenForChange(setting) {
	initialValues.set(setting, setting.value);
	setting.addEventListener(WI.Setting.Event.Changed, () => {
	reloadInspectorContainerElement.classList.toggle("hidden", Array.from(initialValues).every(([setting, initialValue]) => setting.value === initialValue));
	});
	}

	listenForChange(WI.settings.experimentalEnableSourcesTab);
	listenForChange(WI.settings.experimentalEnableLayersTab);
	listenForChange(WI.settings.experimentalEnableNewTabBar);
	listenForChange(WI.settings.experimentalEnableStylesJumpToEffective);

	this.addSettingsView(experimentalSettingsView);
	}

	_createDebugSettingsView()
	{
	if (this._debugSettingsView)
	return;

	// These settings are only ever shown in engineering builds, so the strings are unlocalized.

	this._debugSettingsView = new WI.SettingsView("debug", WI.unlocalizedString("Debug"));

	let protocolMessagesGroup = this._debugSettingsView.addGroup(WI.unlocalizedString("Protocol Logging:"));

	let autoLogProtocolMessagesEditor = protocolMessagesGroup.addSetting(WI.settings.autoLogProtocolMessages, WI.unlocalizedString("Messages"));
	WI.settings.autoLogProtocolMessages.addEventListener(WI.Setting.Event.Changed, () => {
	autoLogProtocolMessagesEditor.value = InspectorBackend.dumpInspectorProtocolMessages;
	});

	protocolMessagesGroup.addSetting(WI.settings.autoLogTimeStats, WI.unlocalizedString("Time Stats"));

	this._debugSettingsView.addSeparator();

	this._debugSettingsView.addSetting(WI.unlocalizedString("Layout Flashing:"), WI.settings.enableLayoutFlashing, WI.unlocalizedString("Draw borders when a view performs a layout"));

	this._debugSettingsView.addSeparator();

	this._debugSettingsView.addSetting(WI.unlocalizedString("Styles:"), WI.settings.enableStyleEditingDebugMode, WI.unlocalizedString("Enable style editing debug mode"));

	this._debugSettingsView.addSeparator();

	this._debugSettingsView.addSetting(WI.unlocalizedString("Heap Snapshot:"), WI.settings.debugShowInternalObjectsInHeapSnapshot, WI.unlocalizedString("Show Internal Objects"));

	this._debugSettingsView.addSeparator();

	this._debugSettingsView.addSetting(WI.unlocalizedString("Debugging:"), WI.settings.pauseForInternalScripts, WI.unlocalizedString("Pause in WebKit-internal scripts"));

	this._debugSettingsView.addSetting(WI.unlocalizedString("Uncaught Exception Reporter:"), WI.settings.enableUncaughtExceptionReporter, WI.unlocalizedString("Enabled"));

	this._debugSettingsView.addSeparator();

	const layoutDirectionValues = [
	[WI.LayoutDirection.System, WI.unlocalizedString("System Default")],
	[WI.LayoutDirection.LTR, WI.unlocalizedString("Left to Right (LTR)")],
	[WI.LayoutDirection.RTL, WI.unlocalizedString("Right to Left (RTL)")],
	];

	let layoutDirectionEditor = this._debugSettingsView.addGroupWithCustomSetting(WI.unlocalizedString("Layout Direction:"), WI.SettingEditor.Type.Select, {values: layoutDirectionValues});
	layoutDirectionEditor.value = WI.settings.layoutDirection.value;
	layoutDirectionEditor.addEventListener(WI.SettingEditor.Event.ValueDidChange, () => { WI.setLayoutDirection(layoutDirectionEditor.value); });

	this.addSettingsView(this._debugSettingsView);
	}

	_updateNavigationBarVisibility()
	{
	let visibleItems = 0;
	for (let item of this._navigationBar.navigationItems) {
	if (!item.hidden && ++visibleItems > 1) {
	this._navigationBar.element.classList.remove("invisible");
	return;
	}
	}

	this._navigationBar.element.classList.add("invisible");
	}

	_navigationItemSelected(event)
	{
	let navigationItem = event.target.selectedNavigationItem;
	if (!navigationItem)
	return;

	let settingsView = this._settingsViews.find((view) => view.identifier === navigationItem.identifier);
	console.assert(settingsView, "Missing SettingsView for identifier " + navigationItem.identifier);
	if (!settingsView)
	return;

	this.selectedSettingsView = settingsView;
	}

	_updateDebugSettingsViewVisibility()
	{
	// Only create the Debug view if the debug UI is enabled.
	if (WI.isDebugUIEnabled())
	this._createDebugSettingsView();

	if (!this._debugSettingsView)
	return;

	this.setSettingsViewVisible(this._debugSettingsView, WI.isDebugUIEnabled());

	this.needsLayout();
	}
	};

	WI.SettingsTabContentView.Type = "settings";