// 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.

/* eslint-disable indent */
(function(window) {

// DevToolsAPI ----------------------------------------------------------------

/**
 * @constructor
 */
function DevToolsAPIImpl()
{
    /**
     * @type {number}
     */
    this._lastCallId = 0;

    /**
     * @type {!Object.<number, function(?Object)>}
     */
    this._callbacks = {};
}

DevToolsAPIImpl.prototype = {
    /**
     * @param {number} id
     * @param {?Object} arg
     */
    embedderMessageAck: function(id, arg)
    {
        var callback = this._callbacks[id];
        delete this._callbacks[id];
        if (callback)
            callback(arg);
    },

    /**
     * @param {string} method
     * @param {!Array.<*>} args
     * @param {?function(?Object)} callback
     */
    sendMessageToEmbedder: function(method, args, callback)
    {
        var callId = ++this._lastCallId;
        if (callback)
            this._callbacks[callId] = callback;
        var message = { "id": callId, "method": method };
        if (args.length)
            message.params = args;
        DevToolsHost.sendMessageToEmbedder(JSON.stringify(message));
    },

    /**
     * @param {string} method
     * @param {!Array<*>} args
     */
    _dispatchOnInspectorFrontendAPI: function(method, args)
    {
        const inspectorFrontendAPI = /** @type {!Object<string, function()>} */ (window["InspectorFrontendAPI"]);
        inspectorFrontendAPI[method].apply(inspectorFrontendAPI, args);
    },

    // API methods below this line --------------------------------------------

    /**
     * @param {!Array.<!ExtensionDescriptor>} extensions
     */
    addExtensions: function(extensions)
    {
        // Support for legacy front-ends (<M41).
        if (window["WebInspector"]["addExtensions"])
            window["WebInspector"]["addExtensions"](extensions);
        else
            this._dispatchOnInspectorFrontendAPI("addExtensions", [extensions]);
    },

    /**
     * @param {string} url
     */
    appendedToURL: function(url)
    {
        this._dispatchOnInspectorFrontendAPI("appendedToURL", [url]);
    },

    /**
     * @param {string} url
     */
    canceledSaveURL: function(url)
    {
        this._dispatchOnInspectorFrontendAPI("canceledSaveURL", [url]);
    },

    contextMenuCleared: function()
    {
        this._dispatchOnInspectorFrontendAPI("contextMenuCleared", []);
    },

    /**
     * @param {string} id
     */
    contextMenuItemSelected: function(id)
    {
        this._dispatchOnInspectorFrontendAPI("contextMenuItemSelected", [id]);
    },

    /**
     * @param {number} count
     */
    deviceCountUpdated: function(count)
    {
        this._dispatchOnInspectorFrontendAPI("deviceCountUpdated", [count]);
    },

    /**
     * @param {boolean} discoverUsbDevices
     * @param {boolean} portForwardingEnabled
     * @param {!Adb.PortForwardingConfig} portForwardingConfig
     */
    devicesDiscoveryConfigChanged: function(discoverUsbDevices, portForwardingEnabled, portForwardingConfig)
    {
        this._dispatchOnInspectorFrontendAPI("devicesDiscoveryConfigChanged", [discoverUsbDevices, portForwardingEnabled, portForwardingConfig]);
    },

    /**
     * @param {!Adb.PortForwardingStatus} status
     */
    devicesPortForwardingStatusChanged: function(status)
    {
        this._dispatchOnInspectorFrontendAPI("devicesPortForwardingStatusChanged", [status]);
    },

    /**
     * @param {!Array.<!Adb.Device>} devices
     */
    devicesUpdated: function(devices)
    {
        this._dispatchOnInspectorFrontendAPI("devicesUpdated", [devices]);
    },

    /**
     * @param {string} message
     */
    dispatchMessage: function(message)
    {
        this._dispatchOnInspectorFrontendAPI("dispatchMessage", [message]);
    },

    /**
     * @param {string} messageChunk
     * @param {number} messageSize
     */
    dispatchMessageChunk: function(messageChunk, messageSize)
    {
        this._dispatchOnInspectorFrontendAPI("dispatchMessageChunk", [messageChunk, messageSize]);
    },

    enterInspectElementMode: function()
    {
        this._dispatchOnInspectorFrontendAPI("enterInspectElementMode", []);
    },

    /**
     * @param {number} callId
     * @param {string} script
     */
    evaluateForTestInFrontend: function(callId, script)
    {
        this._dispatchOnInspectorFrontendAPI("evaluateForTestInFrontend", [callId, script]);
    },

    /**
     * @param {!Array.<!{fileSystemName: string, rootURL: string, fileSystemPath: string}>} fileSystems
     */
    fileSystemsLoaded: function(fileSystems)
    {
        this._dispatchOnInspectorFrontendAPI("fileSystemsLoaded", [fileSystems]);
    },

    /**
     * @param {string} fileSystemPath
     */
    fileSystemRemoved: function(fileSystemPath)
    {
        this._dispatchOnInspectorFrontendAPI("fileSystemRemoved", [fileSystemPath]);
    },

    /**
     * @param {!{fileSystemName: string, rootURL: string, fileSystemPath: string}} fileSystem
     */
    fileSystemAdded: function(fileSystem)
    {
        this._dispatchOnInspectorFrontendAPI("fileSystemAdded", ["", fileSystem]);
    },

    /**
     * @param {!Array<string>} changedPaths
     */
    fileSystemFilesChanged: function(changedPaths)
    {
        this._dispatchOnInspectorFrontendAPI("fileSystemFilesChanged", [changedPaths]);
    },

    /**
     * @param {number} requestId
     * @param {string} fileSystemPath
     * @param {number} totalWork
     */
    indexingTotalWorkCalculated: function(requestId, fileSystemPath, totalWork)
    {
        this._dispatchOnInspectorFrontendAPI("indexingTotalWorkCalculated", [requestId, fileSystemPath, totalWork]);
    },

    /**
     * @param {number} requestId
     * @param {string} fileSystemPath
     * @param {number} worked
     */
    indexingWorked: function(requestId, fileSystemPath, worked)
    {
        this._dispatchOnInspectorFrontendAPI("indexingWorked", [requestId, fileSystemPath, worked]);
    },

    /**
     * @param {number} requestId
     * @param {string} fileSystemPath
     */
    indexingDone: function(requestId, fileSystemPath)
    {
        this._dispatchOnInspectorFrontendAPI("indexingDone", [requestId, fileSystemPath]);
    },

    /**
     * @param {{type: string, key: string, code: string, keyCode: number, modifiers: number}} event
     */
    keyEventUnhandled: function(event)
    {
        event.keyIdentifier = keyCodeToKeyIdentifier(event.keyCode);
        this._dispatchOnInspectorFrontendAPI("keyEventUnhandled", [event]);
    },

    /**
     * @param {boolean} hard
     */
    reloadInspectedPage: function(hard)
    {
        this._dispatchOnInspectorFrontendAPI("reloadInspectedPage", [hard]);
    },

    /**
     * @param {string} url
     * @param {number} lineNumber
     * @param {number} columnNumber
     */
    revealSourceLine: function(url, lineNumber, columnNumber)
    {
        this._dispatchOnInspectorFrontendAPI("revealSourceLine", [url, lineNumber, columnNumber]);
    },

    /**
     * @param {string} url
     */
    savedURL: function(url)
    {
        this._dispatchOnInspectorFrontendAPI("savedURL", [url]);
    },

    /**
     * @param {number} requestId
     * @param {string} fileSystemPath
     * @param {!Array.<string>} files
     */
    searchCompleted: function(requestId, fileSystemPath, files)
    {
        this._dispatchOnInspectorFrontendAPI("searchCompleted", [requestId, fileSystemPath, files]);
    },

    /**
     * @param {string} tabId
     */
    setInspectedTabId: function(tabId)
    {
        // Support for legacy front-ends (<M41).
        if (window["WebInspector"]["setInspectedTabId"])
            window["WebInspector"]["setInspectedTabId"](tabId);
        else
            this._dispatchOnInspectorFrontendAPI("setInspectedTabId", [tabId]);
    },

    /**
     * @param {boolean} useSoftMenu
     */
    setUseSoftMenu: function(useSoftMenu)
    {
        this._dispatchOnInspectorFrontendAPI("setUseSoftMenu", [useSoftMenu]);
    },

    /**
     * @param {string} panelName
     */
    showPanel: function(panelName)
    {
        this._dispatchOnInspectorFrontendAPI("showPanel", [panelName]);
    },

    /**
     * @param {number} id
     * @param {string} chunk
     * @param {boolean} encoded
     */
    streamWrite: function(id, chunk, encoded)
    {
        this._dispatchOnInspectorFrontendAPI("streamWrite", [id, encoded ? this._decodeBase64(chunk) : chunk]);
    },

    /**
     * @param {string} chunk
     * @return {string}
     */
    _decodeBase64: function(chunk)
    {
        var request = new XMLHttpRequest();
        request.open("GET", "data:text/plain;base64," + chunk, false);
        request.send(null);
        if (request.status === 200) {
            return request.responseText;
        } else {
            console.error("Error while decoding chunk in streamWrite");
            return "";
        }
    }
};

var DevToolsAPI = new DevToolsAPIImpl();
window.DevToolsAPI = DevToolsAPI;

// InspectorFrontendHostImpl --------------------------------------------------

/**
 * @constructor
 * @implements {InspectorFrontendHostAPI}
 */
function InspectorFrontendHostImpl()
{
}

InspectorFrontendHostImpl.prototype = {
    /**
     * @override
     * @return {string}
     */
    getSelectionBackgroundColor: function()
    {
        return DevToolsHost.getSelectionBackgroundColor();
    },

    /**
     * @override
     * @return {string}
     */
    getSelectionForegroundColor: function()
    {
        return DevToolsHost.getSelectionForegroundColor();
    },

    /**
     * @override
     * @return {string}
     */
    platform: function()
    {
        return DevToolsHost.platform();
    },

    /**
     * @override
     */
    loadCompleted: function()
    {
        DevToolsAPI.sendMessageToEmbedder("loadCompleted", [], null);
    },

    /**
     * @override
     */
    bringToFront: function()
    {
        DevToolsAPI.sendMessageToEmbedder("bringToFront", [], null);
    },

    /**
     * @override
     */
    closeWindow: function()
    {
        DevToolsAPI.sendMessageToEmbedder("closeWindow", [], null);
    },

    /**
     * @override
     * @param {boolean} isDocked
     * @param {function()} callback
     */
    setIsDocked: function(isDocked, callback)
    {
        DevToolsAPI.sendMessageToEmbedder("setIsDocked", [isDocked], callback);
    },

    /**
     * Requests inspected page to be placed atop of the inspector frontend with specified bounds.
     * @override
     * @param {{x: number, y: number, width: number, height: number}} bounds
     */
    setInspectedPageBounds: function(bounds)
    {
        DevToolsAPI.sendMessageToEmbedder("setInspectedPageBounds", [bounds], null);
    },

    /**
     * @override
     */
    inspectElementCompleted: function()
    {
        DevToolsAPI.sendMessageToEmbedder("inspectElementCompleted", [], null);
    },

    /**
     * @override
     * @param {string} url
     * @param {string} headers
     * @param {number} streamId
     * @param {function(!InspectorFrontendHostAPI.LoadNetworkResourceResult)} callback
     */
    loadNetworkResource: function(url, headers, streamId, callback)
    {
        DevToolsAPI.sendMessageToEmbedder("loadNetworkResource", [url, headers, streamId], /** @type {function(?Object)} */ (callback));
    },

    /**
     * @override
     * @param {function(!Object<string, string>)} callback
     */
    getPreferences: function(callback)
    {
        DevToolsAPI.sendMessageToEmbedder("getPreferences", [], /** @type {function(?Object)} */ (callback));
    },

    /**
     * @override
     * @param {string} name
     * @param {string} value
     */
    setPreference: function(name, value)
    {
        DevToolsAPI.sendMessageToEmbedder("setPreference", [name, value], null);
    },

    /**
     * @override
     * @param {string} name
     */
    removePreference: function(name)
    {
        DevToolsAPI.sendMessageToEmbedder("removePreference", [name], null);
    },

    /**
     * @override
     */
    clearPreferences: function()
    {
        DevToolsAPI.sendMessageToEmbedder("clearPreferences", [], null);
    },

    /**
     * @override
     * @param {string} origin
     * @param {string} script
     */
    setInjectedScriptForOrigin: function(origin, script)
    {
        DevToolsHost.setInjectedScriptForOrigin(origin, script);
    },

    /**
     * @override
     * @param {string} url
     */
    inspectedURLChanged: function(url)
    {
        DevToolsAPI.sendMessageToEmbedder("inspectedURLChanged", [url], null);
    },

    /**
     * @override
     * @param {string} text
     */
    copyText: function(text)
    {
        DevToolsHost.copyText(text);
    },

    /**
     * @override
     * @param {string} url
     */
    openInNewTab: function(url)
    {
        DevToolsAPI.sendMessageToEmbedder("openInNewTab", [url], null);
    },

    /**
     * @override
     * @param {string} url
     * @param {string} content
     * @param {boolean} forceSaveAs
     */
    save: function(url, content, forceSaveAs)
    {
        DevToolsAPI.sendMessageToEmbedder("save", [url, content, forceSaveAs], null);
    },

    /**
     * @override
     * @param {string} url
     * @param {string} content
     */
    append: function(url, content)
    {
        DevToolsAPI.sendMessageToEmbedder("append", [url, content], null);
    },

    /**
     * @override
     * @param {string} message
     */
    sendMessageToBackend: function(message)
    {
        DevToolsAPI.sendMessageToEmbedder("dispatchProtocolMessage", [message], null);
    },

    /**
     * @override
     * @param {string} actionName
     * @param {number} actionCode
     * @param {number} bucketSize
     */
    recordEnumeratedHistogram: function(actionName, actionCode, bucketSize)
    {
        // Support for M49 frontend.
        if (actionName === "DevTools.DrawerShown")
            return;
        DevToolsAPI.sendMessageToEmbedder("recordEnumeratedHistogram", [actionName, actionCode, bucketSize], null);
    },

    /**
     * @override
     */
    requestFileSystems: function()
    {
        DevToolsAPI.sendMessageToEmbedder("requestFileSystems", [], null);
    },

    /**
     * @override
     * @param {string=} fileSystemPath
     */
    addFileSystem: function(fileSystemPath)
    {
        DevToolsAPI.sendMessageToEmbedder("addFileSystem", [fileSystemPath || ""], null);
    },

    /**
     * @override
     * @param {string} fileSystemPath
     */
    removeFileSystem: function(fileSystemPath)
    {
        DevToolsAPI.sendMessageToEmbedder("removeFileSystem", [fileSystemPath], null);
    },

    /**
     * @override
     * @param {string} fileSystemId
     * @param {string} registeredName
     * @return {?DOMFileSystem}
     */
    isolatedFileSystem: function(fileSystemId, registeredName)
    {
        return DevToolsHost.isolatedFileSystem(fileSystemId, registeredName);
    },

    /**
     * @override
     * @param {!FileSystem} fileSystem
     */
    upgradeDraggedFileSystemPermissions: function(fileSystem)
    {
        DevToolsHost.upgradeDraggedFileSystemPermissions(fileSystem);
    },

    /**
     * @override
     * @param {number} requestId
     * @param {string} fileSystemPath
     */
    indexPath: function(requestId, fileSystemPath)
    {
        DevToolsAPI.sendMessageToEmbedder("indexPath", [requestId, fileSystemPath], null);
    },

    /**
     * @override
     * @param {number} requestId
     */
    stopIndexing: function(requestId)
    {
        DevToolsAPI.sendMessageToEmbedder("stopIndexing", [requestId], null);
    },

    /**
     * @override
     * @param {number} requestId
     * @param {string} fileSystemPath
     * @param {string} query
     */
    searchInPath: function(requestId, fileSystemPath, query)
    {
        DevToolsAPI.sendMessageToEmbedder("searchInPath", [requestId, fileSystemPath, query], null);
    },

    /**
     * @override
     * @return {number}
     */
    zoomFactor: function()
    {
        return DevToolsHost.zoomFactor();
    },

    /**
     * @override
     */
    zoomIn: function()
    {
        DevToolsAPI.sendMessageToEmbedder("zoomIn", [], null);
    },

    /**
     * @override
     */
    zoomOut: function()
    {
        DevToolsAPI.sendMessageToEmbedder("zoomOut", [], null);
    },

    /**
     * @override
     */
    resetZoom: function()
    {
        DevToolsAPI.sendMessageToEmbedder("resetZoom", [], null);
    },

    /**
     * @override
     * @param {string} shortcuts
     */
    setWhitelistedShortcuts: function(shortcuts)
    {
        DevToolsAPI.sendMessageToEmbedder("setWhitelistedShortcuts", [shortcuts], null);
    },

    /**
     * @param {!Array<string>} certChain
     */
    showCertificateViewer: function(certChain)
    {
        DevToolsAPI.sendMessageToEmbedder("showCertificateViewer", [JSON.stringify(certChain)], null);
    },

    /**
     * @override
     * @return {boolean}
     */
    isUnderTest: function()
    {
        return DevToolsHost.isUnderTest();
    },

    /**
     * @override
     * @param {function()} callback
     */
    reattach: function(callback)
    {
        DevToolsAPI.sendMessageToEmbedder("reattach", [], callback);
    },

    /**
     * @override
     */
    readyForTest: function()
    {
        DevToolsAPI.sendMessageToEmbedder("readyForTest", [], null);
    },

    /**
     * @override
     * @param {boolean} discoverUsbDevices
     * @param {boolean} portForwardingEnabled
     * @param {!Adb.PortForwardingConfig} portForwardingConfig
     */
    setDevicesDiscoveryConfig: function(discoverUsbDevices, portForwardingEnabled, portForwardingConfig)
    {
        DevToolsAPI.sendMessageToEmbedder("setDevicesDiscoveryConfig", [discoverUsbDevices, portForwardingEnabled, JSON.stringify(portForwardingConfig)], null);
    },

    /**
     * @override
     * @param {boolean} enabled
     */
    setDevicesUpdatesEnabled: function(enabled)
    {
        DevToolsAPI.sendMessageToEmbedder("setDevicesUpdatesEnabled", [enabled], null);
    },

    /**
     * @override
     * @param {string} pageId
     * @param {string} action
     */
    performActionOnRemotePage: function(pageId, action)
    {
        DevToolsAPI.sendMessageToEmbedder("performActionOnRemotePage", [pageId, action], null);
    },

    /**
     * @override
     * @param {string} browserId
     * @param {string} url
     */
    openRemotePage: function(browserId, url)
    {
        DevToolsAPI.sendMessageToEmbedder("openRemotePage", [browserId, url], null);
    },

    /**
     * @override
     * @param {number} x
     * @param {number} y
     * @param {!Array.<!InspectorFrontendHostAPI.ContextMenuDescriptor>} items
     * @param {!Document} document
     */
    showContextMenuAtPoint: function(x, y, items, document)
    {
        DevToolsHost.showContextMenuAtPoint(x, y, items, document);
    },

    /**
     * @override
     * @return {boolean}
     */
    isHostedMode: function()
    {
        return DevToolsHost.isHostedMode();
    },

    // Backward-compatible methods below this line --------------------------------------------

    /**
     * Support for legacy front-ends (<M50).
     * @param {string} message
     */
    sendFrontendAPINotification: function(message)
    {
    },

    /**
     * Support for legacy front-ends (<M41).
     * @return {string}
     */
    port: function()
    {
        return "unknown";
    },

    /**
     * Support for legacy front-ends (<M38).
     * @param {number} zoomFactor
     */
    setZoomFactor: function(zoomFactor)
    {
    },

    /**
     * Support for legacy front-ends (<M34).
     */
    sendMessageToEmbedder: function()
    {
    },

    /**
     * Support for legacy front-ends (<M34).
     * @param {string} dockSide
     */
    requestSetDockSide: function(dockSide)
    {
        DevToolsAPI.sendMessageToEmbedder("setIsDocked", [dockSide !== "undocked"], null);
    },

    /**
     * Support for legacy front-ends (<M34).
     * @return {boolean}
     */
    supportsFileSystems: function()
    {
        return true;
    },

    /**
     * Support for legacy front-ends (<M28).
     * @return {boolean}
     */
    canInspectWorkers: function()
    {
        return true;
    },

    /**
     * Support for legacy front-ends (<M28).
     * @return {boolean}
     */
    canSaveAs: function()
    {
        return true;
    },

    /**
     * Support for legacy front-ends (<M28).
     * @return {boolean}
     */
    canSave: function()
    {
        return true;
    },

    /**
     * Support for legacy front-ends (<M28).
     */
    loaded: function()
    {
    },

    /**
     * Support for legacy front-ends (<M28).
     * @return {string}
     */
    hiddenPanels: function()
    {
        return "";
    },

    /**
     * Support for legacy front-ends (<M28).
     * @return {string}
     */
    localizedStringsURL: function()
    {
        return "";
    },

    /**
     * Support for legacy front-ends (<M28).
     * @param {string} url
     */
    close: function(url)
    {
    },

    /**
     * Support for legacy front-ends (<M44).
     * @param {number} actionCode
     */
    recordActionTaken: function(actionCode)
    {
        this.recordEnumeratedHistogram("DevTools.ActionTaken", actionCode, 100);
    },

    /**
     * Support for legacy front-ends (<M44).
     * @param {number} panelCode
     */
    recordPanelShown: function(panelCode)
    {
        this.recordEnumeratedHistogram("DevTools.PanelShown", panelCode, 20);
    }
};

window.InspectorFrontendHost = new InspectorFrontendHostImpl();

// DevToolsApp ---------------------------------------------------------------

function installObjectObserve()
{
    /** @type {!Array<string>} */
    var properties = [
        "advancedSearchConfig", "auditsPanelSplitViewState", "auditsSidebarWidth", "blockedURLs", "breakpoints", "cacheDisabled", "colorFormat", "consoleHistory",
        "consoleTimestampsEnabled", "cpuProfilerView", "cssSourceMapsEnabled", "currentDockState", "customColorPalette", "customDevicePresets", "customEmulatedDeviceList",
        "customFormatters", "customUserAgent", "databaseTableViewVisibleColumns", "dataGrid-cookiesTable", "dataGrid-DOMStorageItemsView", "debuggerSidebarHidden", "disableDataSaverInfobar",
        "disablePausedStateOverlay", "domBreakpoints", "domWordWrap", "elementsPanelSplitViewState", "elementsSidebarWidth", "emulation.deviceHeight", "emulation.deviceModeValue",
        "emulation.deviceOrientationOverride", "emulation.deviceScale", "emulation.deviceScaleFactor", "emulation.deviceUA", "emulation.deviceWidth", "emulation.geolocationOverride",
        "emulation.showDeviceMode", "emulation.showRulers", "enableAsyncStackTraces", "eventListenerBreakpoints", "fileMappingEntries", "fileSystemMapping", "FileSystemViewSidebarWidth",
        "fileSystemViewSplitViewState", "filterBar-consoleView", "filterBar-networkPanel", "filterBar-promisePane", "filterBar-timelinePanel", "frameViewerHideChromeWindow",
        "heapSnapshotRetainersViewSize", "heapSnapshotSplitViewState", "hideCollectedPromises", "hideNetworkMessages", "highlightNodeOnHoverInOverlay", "highResolutionCpuProfiling",
        "inlineVariableValues", "Inspector.drawerSplitView", "Inspector.drawerSplitViewState", "InspectorView.panelOrder", "InspectorView.screencastSplitView",
        "InspectorView.screencastSplitViewState", "InspectorView.splitView", "InspectorView.splitViewState", "javaScriptDisabled", "jsSourceMapsEnabled", "lastActivePanel", "lastDockState",
        "lastSelectedSourcesSidebarPaneTab", "lastSnippetEvaluationIndex", "layerDetailsSplitView", "layerDetailsSplitViewState", "layersPanelSplitViewState", "layersShowInternalLayers",
        "layersSidebarWidth", "messageLevelFilters", "messageURLFilters", "monitoringXHREnabled", "navigatorGroupByFolder", "navigatorHidden", "networkColorCodeResourceTypes",
        "networkConditions", "networkConditionsCustomProfiles", "networkHideDataURL", "networkLogColumnsVisibility", "networkLogLargeRows", "networkLogShowOverview",
        "networkPanelSplitViewState", "networkRecordFilmStripSetting", "networkResourceTypeFilters", "networkShowPrimaryLoadWaterfall", "networkSidebarWidth", "openLinkHandler",
        "pauseOnCaughtException", "pauseOnExceptionEnabled", "preserveConsoleLog", "prettyPrintInfobarDisabled", "previouslyViewedFiles", "profilesPanelSplitViewState",
        "profilesSidebarWidth", "promiseStatusFilters", "recordAllocationStacks", "requestHeaderFilterSetting", "request-info-formData-category-expanded",
        "request-info-general-category-expanded", "request-info-queryString-category-expanded", "request-info-requestHeaders-category-expanded",
        "request-info-requestPayload-category-expanded", "request-info-responseHeaders-category-expanded", "resources", "resourcesLastSelectedItem", "resourcesPanelSplitViewState",
        "resourcesSidebarWidth", "resourceViewTab", "savedURLs", "screencastEnabled", "scriptsPanelNavigatorSidebarWidth", "searchInContentScripts", "selectedAuditCategories",
        "selectedColorPalette", "selectedProfileType", "shortcutPanelSwitch", "showAdvancedHeapSnapshotProperties", "showEventListenersForAncestors", "showFrameowkrListeners",
        "showHeaSnapshotObjectsHiddenProperties", "showInheritedComputedStyleProperties", "showMediaQueryInspector", "showNativeFunctionsInJSProfile", "showUAShadowDOM",
        "showWhitespacesInEditor", "sidebarPosition", "skipContentScripts", "skipStackFramesPattern", "sourceMapInfobarDisabled", "sourcesPanelDebuggerSidebarSplitViewState",
        "sourcesPanelNavigatorSplitViewState", "sourcesPanelSplitSidebarRatio", "sourcesPanelSplitViewState", "sourcesSidebarWidth", "standardEmulatedDeviceList",
        "StylesPaneSplitRatio", "stylesPaneSplitViewState", "textEditorAutocompletion", "textEditorAutoDetectIndent", "textEditorBracketMatching", "textEditorIndent",
        "timelineCaptureFilmStrip", "timelineCaptureLayersAndPictures", "timelineCaptureMemory", "timelineCaptureNetwork", "timeline-details", "timelineEnableJSSampling",
        "timelineOverviewMode", "timelinePanelDetailsSplitViewState", "timelinePanelRecorsSplitViewState", "timelinePanelTimelineStackSplitViewState", "timelinePerspective",
        "timeline-split", "timelineTreeGroupBy", "timeline-view", "timelineViewMode", "uiTheme", "watchExpressions", "WebInspector.Drawer.lastSelectedView", "WebInspector.Drawer.showOnLoad",
        "workspaceExcludedFolders", "workspaceFolderExcludePattern", "workspaceInfobarDisabled", "workspaceMappingInfobarDisabled", "xhrBreakpoints"];

    /**
     * @this {!{_storage: Object, _name: string}}
     */
    function settingRemove()
    {
        this._storage[this._name] = undefined;
    }

    /**
     * @param {!Object} object
     * @param {function(!Array<!{name: string}>)} observer
     */
    function objectObserve(object, observer)
    {
        if (window["WebInspector"]) {
            var settingPrototype = /** @type {!Object} */ (window["WebInspector"]["Setting"]["prototype"]);
            if (typeof settingPrototype["remove"] === "function")
                settingPrototype["remove"] = settingRemove;
        }
        /** @type {!Set<string>} */
        var changedProperties = new Set();
        var scheduled = false;

        function scheduleObserver()
        {
            if (scheduled)
                return;
            scheduled = true;
            setImmediate(callObserver);
        }

        function callObserver()
        {
            scheduled = false;
            var changes = /** @type {!Array<!{name: string}>} */ ([]);
            changedProperties.forEach(function(name) { changes.push({name: name}); });
            changedProperties.clear();
            observer.call(null, changes);
        }

        /** @type {!Map<string, *>} */
        var storage = new Map();

        /**
         * @param {string} property
         */
        function defineProperty(property)
        {
            if (property in object) {
                storage.set(property, object[property]);
                delete object[property];
            }

            Object.defineProperty(object, property, {
                /**
                 * @return {*}
                 */
                get: function()
                {
                    return storage.get(property);
                },

                /**
                 * @param {*} value
                 */
                set: function(value)
                {
                    storage.set(property, value);
                    changedProperties.add(property);
                    scheduleObserver();
                }
            });
        }

        for (var i = 0; i < properties.length; ++i)
            defineProperty(properties[i]);
    }

    window.Object.observe = objectObserve;
}

/** @type {!Map<number, string>} */
var staticKeyIdentifiers = new Map([
    [0x12, "Alt"],
    [0x11, "Control"],
    [0x10, "Shift"],
    [0x14, "CapsLock"],
    [0x5b, "Win"],
    [0x5c, "Win"],
    [0x0c, "Clear"],
    [0x28, "Down"],
    [0x23, "End"],
    [0x0a, "Enter"],
    [0x0d, "Enter"],
    [0x2b, "Execute"],
    [0x70, "F1"],
    [0x71, "F2"],
    [0x72, "F3"],
    [0x73, "F4"],
    [0x74, "F5"],
    [0x75, "F6"],
    [0x76, "F7"],
    [0x77, "F8"],
    [0x78, "F9"],
    [0x79, "F10"],
    [0x7a, "F11"],
    [0x7b, "F12"],
    [0x7c, "F13"],
    [0x7d, "F14"],
    [0x7e, "F15"],
    [0x7f, "F16"],
    [0x80, "F17"],
    [0x81, "F18"],
    [0x82, "F19"],
    [0x83, "F20"],
    [0x84, "F21"],
    [0x85, "F22"],
    [0x86, "F23"],
    [0x87, "F24"],
    [0x2f, "Help"],
    [0x24, "Home"],
    [0x2d, "Insert"],
    [0x25, "Left"],
    [0x22, "PageDown"],
    [0x21, "PageUp"],
    [0x13, "Pause"],
    [0x2c, "PrintScreen"],
    [0x27, "Right"],
    [0x91, "Scroll"],
    [0x29, "Select"],
    [0x26, "Up"],
    [0x2e, "U+007F"], // Standard says that DEL becomes U+007F.
    [0xb0, "MediaNextTrack"],
    [0xb1, "MediaPreviousTrack"],
    [0xb2, "MediaStop"],
    [0xb3, "MediaPlayPause"],
    [0xad, "VolumeMute"],
    [0xae, "VolumeDown"],
    [0xaf, "VolumeUp"],
]);

/**
 * @param {number} keyCode
 * @return {string}
 */
function keyCodeToKeyIdentifier(keyCode)
{
    var result = staticKeyIdentifiers.get(keyCode);
    if (result !== undefined)
        return result;
    result = "U+";
    var hexString = keyCode.toString(16).toUpperCase();
    for (var i = hexString.length; i < 4; ++i)
        result += "0";
    result += hexString;
    return result;
}

function installBackwardsCompatibility()
{
    if (window.location.search.indexOf("remoteFrontend") === -1)
        return;

    // Support for legacy (<M53) frontends.
    if (!window.KeyboardEvent.prototype.hasOwnProperty("keyIdentifier")) {
        Object.defineProperty(window.KeyboardEvent.prototype, "keyIdentifier", {
            /**
             * @return {string}
             * @this {KeyboardEvent}
             */
            get: function()
            {
                return keyCodeToKeyIdentifier(this.keyCode);
            }
        });
    }

    // Support for legacy (<M50) frontends.
    installObjectObserve();

    /**
     * @param {string} property
     * @return {!CSSValue|null}
     * @this {CSSStyleDeclaration}
     */
    function getValue(property)
    {
        // Note that |property| comes from another context, so we can't use === here.
        // eslint-disable-next-line eqeqeq
        if (property == "padding-left") {
            return /** @type {!CSSValue} */ ({
                /**
                 * @return {number}
                 * @this {!{__paddingLeft: number}}
                 */
                getFloatValue: function() { return this.__paddingLeft; },
                __paddingLeft: parseFloat(this.paddingLeft)
            });
        }
        throw new Error("getPropertyCSSValue is undefined");
    }

    // Support for legacy (<M41) frontends.
    window.CSSStyleDeclaration.prototype.getPropertyCSSValue = getValue;

    function CSSPrimitiveValue()
    {
    }
    CSSPrimitiveValue.CSS_PX = 5;
    window.CSSPrimitiveValue = CSSPrimitiveValue;

    // Support for legacy (<M44) frontends.
    var styleElement = window.document.createElement("style");
    styleElement.type = "text/css";
    styleElement.textContent = "html /deep/ * { min-width: 0; min-height: 0; }";

    // Support for quirky border-image behavior (<M51), see:
    // https://bugs.chromium.org/p/chromium/issues/detail?id=559258
    styleElement.textContent += "\nhtml /deep/ .cm-breakpoint .CodeMirror-linenumber { border-style: solid !important; }";
    styleElement.textContent += "\nhtml /deep/ .cm-breakpoint.cm-breakpoint-conditional .CodeMirror-linenumber { border-style: solid !important; }";
    window.document.head.appendChild(styleElement);

    // Support for legacy (<M49) frontends.
    Event.prototype.deepPath = undefined;

    // Support for legacy (<53) frontends.
    window.FileError = /** @type {!function (new: FileError) : ?} */ ({
        NOT_FOUND_ERR: DOMException.NOT_FOUND_ERR,
        ABORT_ERR: DOMException.ABORT_ERR,
        INVALID_MODIFICATION_ERR: DOMException.INVALID_MODIFICATION_ERR,
        NOT_READABLE_ERR: 0  // No matching DOMException, so code will be 0.
    });
}

function windowLoaded()
{
    window.removeEventListener("DOMContentLoaded", windowLoaded, false);
    installBackwardsCompatibility();
}

if (window.document.head && (window.document.readyState === "complete" || window.document.readyState === "interactive"))
    installBackwardsCompatibility();
else
    window.addEventListener("DOMContentLoaded", windowLoaded, false);

/** @type {(!function(string, boolean=):boolean)|undefined} */
DOMTokenList.prototype.__originalDOMTokenListToggle;

if (!DOMTokenList.prototype.__originalDOMTokenListToggle) {
    DOMTokenList.prototype.__originalDOMTokenListToggle = DOMTokenList.prototype.toggle;
    /**
     * @param {string} token
     * @param {boolean=} force
     * @return {boolean}
     */
    DOMTokenList.prototype.toggle = function(token, force)
    {
        if (arguments.length === 1)
            force = !this.contains(token);
        return this.__originalDOMTokenListToggle(token, !!force);
    };
}

})(window);
