ScriptsPanel.js   [plain text]

/*
 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
 * Copyright (C) 2011 Google 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. ``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
 * 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.
 */

/**
 * @constructor
 * @implements {WebInspector.TabbedEditorContainerDelegate}
 * @extends {WebInspector.Panel}
 */
WebInspector.ScriptsPanel = function(presentationModel)
{
    WebInspector.Panel.call(this, "scripts");
    this.registerRequiredCSS("scriptsPanel.css");

    WebInspector.settings.pauseOnExceptionStateString = WebInspector.settings.createSetting("pauseOnExceptionStateString", WebInspector.ScriptsPanel.PauseOnExceptionsState.DontPauseOnExceptions);
    WebInspector.settings.navigatorWasOnceHidden = WebInspector.settings.createSetting("navigatorWasOnceHidden", false);

    this._presentationModel = presentationModel;

    function viewGetter()
    {
        return this.visibleView;
    }
    WebInspector.GoToLineDialog.install(this, viewGetter.bind(this));
    WebInspector.JavaScriptOutlineDialog.install(this, viewGetter.bind(this));

    this.debugToolbar = this._createDebugToolbar();

    const initialDebugSidebarWidth = 225;
    const maximalDebugSidebarWidthPercent = 50;
    this.createSplitView(this.element, WebInspector.SplitView.SidebarPosition.Right, initialDebugSidebarWidth);
    this.splitView.element.id = "scripts-split-view";
    this.splitView.minimalSidebarWidth = Preferences.minScriptsSidebarWidth;
    this.splitView.minimalMainWidthPercent = 100 - maximalDebugSidebarWidthPercent;

    this.sidebarElement.appendChild(this.debugToolbar);

    this.debugSidebarResizeWidgetElement = document.createElement("div");
    this.debugSidebarResizeWidgetElement.id = "scripts-debug-sidebar-resizer-widget";
    this.splitView.installResizer(this.debugSidebarResizeWidgetElement);

    // Create scripts navigator
    const initialNavigatorWidth = 225;
    const minimalViewsContainerWidthPercent = 50;
    this.editorView = new WebInspector.SplitView(WebInspector.SplitView.SidebarPosition.Left, "scriptsPanelNavigatorSidebarWidth", initialNavigatorWidth);
    this.editorView.element.tabIndex = 0;

    this.editorView.minimalSidebarWidth = Preferences.minScriptsSidebarWidth;
    this.editorView.minimalMainWidthPercent = minimalViewsContainerWidthPercent;
    this.editorView.show(this.splitView.mainElement);

    this._navigator = new WebInspector.ScriptsNavigator();
    this._navigator.view.show(this.editorView.sidebarElement);

    this._editorContainer = new WebInspector.TabbedEditorContainer(this, "previouslyViewedFiles");
    this._editorContainer.show(this.editorView.mainElement);
    WebInspector.OpenScriptDialog.install(this, this._presentationModel, this.editorView.mainElement);

    this._navigatorController = new WebInspector.NavigatorOverlayController(this, this.editorView, this._navigator.view, this._editorContainer.view);

    this._navigator.addEventListener(WebInspector.ScriptsNavigator.Events.ScriptSelected, this._scriptSelected, this);
    this._editorContainer.addEventListener(WebInspector.TabbedEditorContainer.Events.EditorSelected, this._editorSelected, this);
    this._editorContainer.addEventListener(WebInspector.TabbedEditorContainer.Events.EditorClosed, this._editorClosed, this);

    this.splitView.mainElement.appendChild(this.debugSidebarResizeWidgetElement);

    this.sidebarPanes = {};
    this.sidebarPanes.watchExpressions = new WebInspector.WatchExpressionsSidebarPane();
    this.sidebarPanes.callstack = new WebInspector.CallStackSidebarPane();
    this.sidebarPanes.scopechain = new WebInspector.ScopeChainSidebarPane();
    this.sidebarPanes.jsBreakpoints = new WebInspector.JavaScriptBreakpointsSidebarPane(this._presentationModel.breakpointManager, this._showSourceLine.bind(this));
    if (Capabilities.nativeInstrumentationEnabled) {
        this.sidebarPanes.domBreakpoints = WebInspector.domBreakpointsSidebarPane;
        this.sidebarPanes.xhrBreakpoints = new WebInspector.XHRBreakpointsSidebarPane();
        this.sidebarPanes.eventListenerBreakpoints = new WebInspector.EventListenerBreakpointsSidebarPane();
    }

    if (Preferences.exposeWorkersInspection && !WebInspector.WorkerManager.isWorkerFrontend()) {
        WorkerAgent.setWorkerInspectionEnabled(true);
        this.sidebarPanes.workerList = new WebInspector.WorkerListSidebarPane(WebInspector.workerManager);
    } else
        this.sidebarPanes.workers = new WebInspector.WorkersSidebarPane();

    this._debugSidebarContentsElement = document.createElement("div");
    this._debugSidebarContentsElement.id = "scripts-debug-sidebar-contents";
    this.sidebarElement.appendChild(this._debugSidebarContentsElement);

    for (var pane in this.sidebarPanes)
        this._debugSidebarContentsElement.appendChild(this.sidebarPanes[pane].element);

    this.sidebarPanes.callstack.expanded = true;

    this.sidebarPanes.scopechain.expanded = true;
    this.sidebarPanes.jsBreakpoints.expanded = true;

    var helpSection = WebInspector.shortcutsScreen.section(WebInspector.UIString("Scripts Panel"));
    this.sidebarPanes.callstack.registerShortcuts(helpSection, this.registerShortcut.bind(this));
    var evaluateInConsoleShortcut = WebInspector.KeyboardShortcut.makeDescriptor("e", WebInspector.KeyboardShortcut.Modifiers.Shift | WebInspector.KeyboardShortcut.Modifiers.Ctrl);
    helpSection.addKey(evaluateInConsoleShortcut.name, WebInspector.UIString("Evaluate selection in console"));
    this.registerShortcut(evaluateInConsoleShortcut.key, this._evaluateSelectionInConsole.bind(this));

    var openResourceShortcut = WebInspector.OpenResourceDialog.createShortcut();
    helpSection.addKey(openResourceShortcut.name, WebInspector.UIString("Open script"));

    var scriptOutlineShortcut = WebInspector.JavaScriptOutlineDialog.createShortcut();
    helpSection.addKey(scriptOutlineShortcut.name, WebInspector.UIString("Go to function"));

    var panelEnablerHeading = WebInspector.UIString("You need to enable debugging before you can use the Scripts panel.");
    var panelEnablerDisclaimer = WebInspector.UIString("Enabling debugging will make scripts run slower.");
    var panelEnablerButton = WebInspector.UIString("Enable Debugging");

    this.panelEnablerView = new WebInspector.PanelEnablerView("scripts", panelEnablerHeading, panelEnablerDisclaimer, panelEnablerButton);
    this.panelEnablerView.addEventListener("enable clicked", this.enableDebugging, this);

    this.enableToggleButton = new WebInspector.StatusBarButton("", "enable-toggle-status-bar-item");
    this.enableToggleButton.addEventListener("click", this.toggleDebugging, this);
    if (!Capabilities.debuggerCausesRecompilation)
        this.enableToggleButton.element.addStyleClass("hidden");

    this._pauseOnExceptionButton = new WebInspector.StatusBarButton("", "scripts-pause-on-exceptions-status-bar-item", 3);
    this._pauseOnExceptionButton.addEventListener("click", this._togglePauseOnExceptions, this);

    this._toggleFormatSourceButton = new WebInspector.StatusBarButton(WebInspector.UIString("Pretty print"), "scripts-toggle-pretty-print-status-bar-item");
    this._toggleFormatSourceButton.toggled = false;
    this._toggleFormatSourceButton.addEventListener("click", this._toggleFormatSource, this);

    this._scriptViewStatusBarItemsContainer = document.createElement("div");
    this._scriptViewStatusBarItemsContainer.style.display = "inline-block";

    this._debuggerEnabled = !Capabilities.debuggerCausesRecompilation;

    this._sourceFramesByUISourceCode = new Map();
    this._reset(false);

    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.DebuggerWasEnabled, this._debuggerWasEnabled, this);
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.DebuggerWasDisabled, this._debuggerWasDisabled, this);
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.DebuggerPaused, this._debuggerPaused, this);
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.DebuggerResumed, this._debuggerResumed, this);
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.CallFrameSelected, this._callFrameSelected, this);
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.ConsoleCommandEvaluatedInSelectedCallFrame, this._consoleCommandEvaluatedInSelectedCallFrame, this);
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.ExecutionLineChanged, this._executionLineChanged, this);
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.GlobalObjectCleared, this._reset.bind(this, false));
    WebInspector.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.BreakpointsActiveStateChanged, this._breakpointsActiveStateChanged, this);

    this._presentationModel.addEventListener(WebInspector.DebuggerPresentationModel.Events.UISourceCodeAdded, this._handleUISourceCodeAdded, this)
    this._presentationModel.addEventListener(WebInspector.DebuggerPresentationModel.Events.UISourceCodeReplaced, this._uiSourceCodeReplaced, this);
    this._presentationModel.addEventListener(WebInspector.DebuggerPresentationModel.Events.UISourceCodeRemoved, this._uiSourceCodeRemoved, this);

    var enableDebugger = !Capabilities.debuggerCausesRecompilation || WebInspector.settings.debuggerEnabled.get();
    if (enableDebugger)
        WebInspector.debuggerModel.enableDebugger();

    WebInspector.advancedSearchController.registerSearchScope(new WebInspector.ScriptsSearchScope());
}

// Keep these in sync with WebCore::ScriptDebugServer
WebInspector.ScriptsPanel.PauseOnExceptionsState = {
    DontPauseOnExceptions : "none",
    PauseOnAllExceptions : "all",
    PauseOnUncaughtExceptions: "uncaught"
};

WebInspector.ScriptsPanel.prototype = {
    get toolbarItemLabel()
    {
        return WebInspector.UIString("Scripts");
    },

    get statusBarItems()
    {
        return [this.enableToggleButton.element, this._pauseOnExceptionButton.element, this._toggleFormatSourceButton.element, this._scriptViewStatusBarItemsContainer];
    },

    defaultFocusedElement: function()
    {
        return this._navigator.view.defaultFocusedElement();
    },

    get paused()
    {
        return this._paused;
    },

    wasShown: function()
    {
        WebInspector.Panel.prototype.wasShown.call(this);
        if (Capabilities.nativeInstrumentationEnabled)
            this._debugSidebarContentsElement.insertBefore(this.sidebarPanes.domBreakpoints.element, this.sidebarPanes.xhrBreakpoints.element);
        this.sidebarPanes.watchExpressions.show();

        this._navigatorController.wasShown();
    },

    _didBuildOutlineChunk: function(event)
    {
        WebInspector.JavaScriptOutlineDialog.didAddChunk(event.data);
        if (event.data.total === event.data.index) {
            if (this._outlineWorker) {
                this._outlineWorker.terminate();
                delete this._outlineWorker;
            }
        }
    },

    /**
     * @param {WebInspector.Event} event
     */
    _handleUISourceCodeAdded: function(event)
    {
        var uiSourceCode = /** @type {WebInspector.UISourceCode} */ event.data;
        this._uiSourceCodeAdded(uiSourceCode);
    },

    _loadUISourceCodes: function()
    {
        var uiSourceCodes = this._presentationModel.uiSourceCodes();
        for (var i = 0; i < uiSourceCodes.length; ++i)
            this._uiSourceCodeAdded(uiSourceCodes[i]);
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     */
    _uiSourceCodeAdded: function(uiSourceCode)
    {
        if (!uiSourceCode.url || uiSourceCode.isSnippetEvaluation) {
            // Anonymous sources and snippets evaluations are shown only when stepping.
            return;
        }

        this._addUISourceCode(uiSourceCode);
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     */
    _addUISourceCode: function(uiSourceCode)
    {
        this._navigator.addUISourceCode(uiSourceCode);
        this._editorContainer.uiSourceCodeAdded(uiSourceCode);
    },

    _uiSourceCodeRemoved: function(event)
    {
        var uiSourceCode = /** @type {WebInspector.UISourceCode} */ event.data;
        this._removeSourceFrame(uiSourceCode);
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     * @param {boolean} isDirty
     */
    setScriptSourceIsDirty: function(uiSourceCode, isDirty)
    {
        this._navigator.setScriptSourceIsDirty(uiSourceCode, isDirty);
        this._editorContainer.setFileIsDirty(uiSourceCode, isDirty);
    },

    _consoleCommandEvaluatedInSelectedCallFrame: function(event)
    {
        this.sidebarPanes.scopechain.update(WebInspector.debuggerModel.selectedCallFrame());
    },

    _debuggerPaused: function(event)
    {
        var details = /** @type {WebInspector.DebuggerPausedDetails} */ event.data;

        this._paused = true;
        this._waitingToPause = false;
        this._stepping = false;

        this._updateDebuggerButtons();

        WebInspector.inspectorView.setCurrentPanel(this);
        this.sidebarPanes.callstack.update(details.callFrames);

        if (details.reason === WebInspector.DebuggerModel.BreakReason.DOM) {
            this.sidebarPanes.domBreakpoints.highlightBreakpoint(details.auxData);
            function didCreateBreakpointHitStatusMessage(element)
            {
                this.sidebarPanes.callstack.setStatus(element);
            }
            this.sidebarPanes.domBreakpoints.createBreakpointHitStatusMessage(details.auxData, didCreateBreakpointHitStatusMessage.bind(this));
        } else if (details.reason === WebInspector.DebuggerModel.BreakReason.EventListener) {
            var eventName = details.auxData.eventName;
            this.sidebarPanes.eventListenerBreakpoints.highlightBreakpoint(details.auxData.eventName);
            var eventNameForUI = WebInspector.EventListenerBreakpointsSidebarPane.eventNameForUI(eventName);
            this.sidebarPanes.callstack.setStatus(WebInspector.UIString("Paused on a \"%s\" Event Listener.", eventNameForUI));
        } else if (details.reason === WebInspector.DebuggerModel.BreakReason.XHR) {
            this.sidebarPanes.xhrBreakpoints.highlightBreakpoint(details.auxData["breakpointURL"]);
            this.sidebarPanes.callstack.setStatus(WebInspector.UIString("Paused on a XMLHttpRequest."));
        } else if (details.reason === WebInspector.DebuggerModel.BreakReason.Exception) {
            this.sidebarPanes.callstack.setStatus(WebInspector.UIString("Paused on exception: '%s'.", details.auxData.description));
        } else {
            function didGetUILocation(uiLocation)
            {
                var breakpoint = this._presentationModel.breakpointManager.findBreakpoint(uiLocation.uiSourceCode, uiLocation.lineNumber);
                if (!breakpoint)
                    return;
                this.sidebarPanes.jsBreakpoints.highlightBreakpoint(breakpoint);
                this.sidebarPanes.callstack.setStatus(WebInspector.UIString("Paused on a JavaScript breakpoint."));
            }
            details.callFrames[0].createLiveLocation(didGetUILocation.bind(this));
        }

        window.focus();
        InspectorFrontendHost.bringToFront();
    },

    _debuggerResumed: function()
    {
        this._paused = false;
        this._waitingToPause = false;
        this._stepping = false;

        this._clearInterface();
    },

    _debuggerWasEnabled: function()
    {
        this._setPauseOnExceptions(WebInspector.settings.pauseOnExceptionStateString.get());

        if (this._debuggerEnabled)
            return;

        this._debuggerEnabled = true;
        this._reset(true);
    },

    _debuggerWasDisabled: function()
    {
        if (!this._debuggerEnabled)
            return;

        this._debuggerEnabled = false;
        this._reset(true);
    },

    _reset: function(preserveItems)
    {
        delete this.currentQuery;
        this.searchCanceled();

        this._debuggerResumed();

        delete this._currentUISourceCode;
        this._navigator.reset();
        this._editorContainer.reset();
        this._updateScriptViewStatusBarItems();

        this.sidebarPanes.jsBreakpoints.reset();
        this.sidebarPanes.watchExpressions.reset();
        if (!preserveItems && this.sidebarPanes.workers)
            this.sidebarPanes.workers.reset();
        this._loadUISourceCodes();
    },

    get visibleView()
    {
        return this._editorContainer.visibleView;
    },

    _updateScriptViewStatusBarItems: function()
    {
        this._scriptViewStatusBarItemsContainer.removeChildren();

        var sourceFrame = this.visibleView;
        if (sourceFrame) {
            var statusBarItems = sourceFrame.statusBarItems || [];
            for (var i = 0; i < statusBarItems.length; ++i)
                this._scriptViewStatusBarItemsContainer.appendChild(statusBarItems[i]);
        }
    },

    canShowAnchorLocation: function(anchor)
    {
        return this._debuggerEnabled && anchor.uiSourceCode;
    },

    showAnchorLocation: function(anchor)
    {
        this._showSourceLine(anchor.uiSourceCode, anchor.lineNumber);
    },

    showFunctionDefinition: function(functionLocation)
    {
        WebInspector.showPanelForAnchorNavigation(this);
        var uiLocation = this._presentationModel.rawLocationToUILocation(functionLocation);
        this._showSourceLine(uiLocation.uiSourceCode, uiLocation.lineNumber);
    },

    showUISourceCode: function(uiSourceCode)
    {
        this._showSourceLine(uiSourceCode);
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     * @param {number=} lineNumber
     */
    _showSourceLine: function(uiSourceCode, lineNumber)
    {
        var sourceFrame = this._showFile(uiSourceCode);
        if (typeof lineNumber === "number")
            sourceFrame.highlightLine(lineNumber);
        sourceFrame.focus();
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     * @return {WebInspector.SourceFrame}
     */
    _showFile: function(uiSourceCode)
    {
        if (!this._navigator.isScriptSourceAdded(uiSourceCode))
            return null;

        var sourceFrame = this._getOrCreateSourceFrame(uiSourceCode);
        if (this._currentUISourceCode === uiSourceCode)
            return sourceFrame;
        this._currentUISourceCode = uiSourceCode;

        this._navigator.revealUISourceCode(uiSourceCode);
        this._editorContainer.showFile(uiSourceCode);
        this._updateScriptViewStatusBarItems();

        return sourceFrame;
    },

    requestVisibleScriptOutline: function()
    {
        
        /**
         * @param {?string} content
         * @param {boolean} contentEncoded
         * @param {string} mimeType
         */
        function contentCallback(content, contentEncoded, mimeType)
        {
            if (this._outlineWorker)
                this._outlineWorker.terminate();
            this._outlineWorker = new Worker("ScriptFormatterWorker.js");
            this._outlineWorker.onmessage = this._didBuildOutlineChunk.bind(this);
            const method = "outline";
            this._outlineWorker.postMessage({ method: method, params: { content: content, id: this.visibleView.uiSourceCode.id } });
        }

        if (this.visibleView.uiSourceCode)
            this.visibleView.uiSourceCode.requestContent(contentCallback.bind(this));
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     * @return {WebInspector.SourceFrame}
     */
    _createSourceFrame: function(uiSourceCode)
    {
        var sourceFrame = new WebInspector.JavaScriptSourceFrame(this, this._presentationModel, uiSourceCode);

        sourceFrame._uiSourceCode = uiSourceCode;
        this._sourceFramesByUISourceCode.put(uiSourceCode, sourceFrame);
        return sourceFrame;
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     * @return {WebInspector.SourceFrame}
     */
    _getOrCreateSourceFrame: function(uiSourceCode)
    {
        return this._sourceFramesByUISourceCode.get(uiSourceCode) || this._createSourceFrame(uiSourceCode);
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     * @return {WebInspector.SourceFrame}
     */
    viewForFile: function(uiSourceCode)
    {
        return this._getOrCreateSourceFrame(uiSourceCode);
    },

    /**
     * @param {WebInspector.UISourceCode} uiSourceCode
     */
    _removeSourceFrame: function(uiSourceCode)
    {
        var sourceFrame = this._sourceFramesByUISourceCode.get(uiSourceCode);
        if (!sourceFrame)
            return;
        this._sourceFramesByUISourceCode.remove(uiSourceCode);
        sourceFrame.detach();
    },

    /**
     * @param {Event} event
     */
    _uiSourceCodeReplaced: function(event)
    {
        var oldUISourceCodeList = /** @type {Array.<WebInspector.UISourceCode>} */ event.data.oldUISourceCodeList;
        var uiSourceCodeList = /** @type {Array.<WebInspector.UISourceCode>} */ event.data.uiSourceCodeList;

        this._navigator.replaceUISourceCodes(oldUISourceCodeList, uiSourceCodeList);
        this._editorContainer.replaceFiles(oldUISourceCodeList, uiSourceCodeList);
        for (var i = 0; i < oldUISourceCodeList.length; ++i)
            this._removeSourceFrame(oldUISourceCodeList[i]);
    },

    _clearCurrentExecutionLine: function()
    {
        if (this._executionSourceFrame)
            this._executionSourceFrame.clearExecutionLine();
        delete this._executionSourceFrame;
    },

    _executionLineChanged: function(event)
    {
        var uiLocation = event.data;

        this._clearCurrentExecutionLine();
        if (!uiLocation)
            return;
        var sourceFrame = this._getOrCreateSourceFrame(uiLocation.uiSourceCode);
        sourceFrame.setExecutionLine(uiLocation.lineNumber);
        this._executionSourceFrame = sourceFrame;
    },

    _revealExecutionLine: function(uiLocation)
    {
        // Some scripts (anonymous and snippets evaluations) are not added to files select by default.
        this._addUISourceCode(uiLocation.uiSourceCode);
        var sourceFrame = this._showFile(uiLocation.uiSourceCode);
        sourceFrame.revealLine(uiLocation.lineNumber);
    },

    _callFrameSelected: function(event)
    {
        var callFrame = event.data;

        if (!callFrame)
            return;

        this.sidebarPanes.scopechain.update(callFrame);
        this.sidebarPanes.watchExpressions.refreshExpressions();
        this.sidebarPanes.callstack.setSelectedCallFrame(callFrame);
        callFrame.createLiveLocation(this._revealExecutionLine.bind(this));
    },

    _editorClosed: function(event)
    {
        this._navigatorController.hideNavigatorOverlay();
        var uiSourceCode = /** @type {WebInspector.UISourceCode} */ event.data;

        if (this._currentUISourceCode === uiSourceCode)
            delete this._currentUISourceCode;

        // ScriptsNavigator does not need to update on EditorClosed.
        this._updateScriptViewStatusBarItems();
    },

    _editorSelected: function(event)
    {
        var uiSourceCode = /** @type {WebInspector.UISourceCode} */ event.data;
        this._showFile(uiSourceCode);
        this._navigatorController.hideNavigatorOverlay();
    },

    _scriptSelected: function(event)
    {
        var uiSourceCode = /** @type {WebInspector.UISourceCode} */ event.data.uiSourceCode;
        var sourceFrame = this._showFile(uiSourceCode);
        this._navigatorController.hideNavigatorOverlay();
        if (sourceFrame && event.data.focusSource)
            sourceFrame.focus();
    },

    _setPauseOnExceptions: function(pauseOnExceptionsState)
    {
        pauseOnExceptionsState = pauseOnExceptionsState || WebInspector.ScriptsPanel.PauseOnExceptionsState.DontPauseOnExceptions;
        function callback(error)
        {
            if (error)
                return;
            if (pauseOnExceptionsState == WebInspector.ScriptsPanel.PauseOnExceptionsState.DontPauseOnExceptions)
                this._pauseOnExceptionButton.title = WebInspector.UIString("Don't pause on exceptions.\nClick to Pause on all exceptions.");
            else if (pauseOnExceptionsState == WebInspector.ScriptsPanel.PauseOnExceptionsState.PauseOnAllExceptions)
                this._pauseOnExceptionButton.title = WebInspector.UIString("Pause on all exceptions.\nClick to Pause on uncaught exceptions.");
            else if (pauseOnExceptionsState == WebInspector.ScriptsPanel.PauseOnExceptionsState.PauseOnUncaughtExceptions)
                this._pauseOnExceptionButton.title = WebInspector.UIString("Pause on uncaught exceptions.\nClick to Not pause on exceptions.");

            this._pauseOnExceptionButton.state = pauseOnExceptionsState;
            WebInspector.settings.pauseOnExceptionStateString.set(pauseOnExceptionsState);
        }
        DebuggerAgent.setPauseOnExceptions(pauseOnExceptionsState, callback.bind(this));
    },

    _updateDebuggerButtons: function()
    {
        if (this._debuggerEnabled) {
            this.enableToggleButton.title = WebInspector.UIString("Debugging enabled. Click to disable.");
            this.enableToggleButton.toggled = true;
            this._pauseOnExceptionButton.visible = true;
            this.panelEnablerView.detach();
        } else {
            this.enableToggleButton.title = WebInspector.UIString("Debugging disabled. Click to enable.");
            this.enableToggleButton.toggled = false;
            this._pauseOnExceptionButton.visible = false;
            this.panelEnablerView.show(this.element);
        }

        if (this._paused) {
            this.pauseButton.addStyleClass("paused");

            this.pauseButton.disabled = false;
            this.stepOverButton.disabled = false;
            this.stepIntoButton.disabled = false;
            this.stepOutButton.disabled = false;

            this.debuggerStatusElement.textContent = WebInspector.UIString("Paused");
        } else {
            this.pauseButton.removeStyleClass("paused");

            this.pauseButton.disabled = this._waitingToPause;
            this.stepOverButton.disabled = true;
            this.stepIntoButton.disabled = true;
            this.stepOutButton.disabled = true;

            if (this._waitingToPause)
                this.debuggerStatusElement.textContent = WebInspector.UIString("Pausing");
            else if (this._stepping)
                this.debuggerStatusElement.textContent = WebInspector.UIString("Stepping");
            else
                this.debuggerStatusElement.textContent = "";
        }
    },

    _clearInterface: function()
    {
        this.sidebarPanes.callstack.update(null);
        this.sidebarPanes.scopechain.update(null);
        this.sidebarPanes.jsBreakpoints.clearBreakpointHighlight();
        if (Capabilities.nativeInstrumentationEnabled) {
            this.sidebarPanes.domBreakpoints.clearBreakpointHighlight();
            this.sidebarPanes.eventListenerBreakpoints.clearBreakpointHighlight();
            this.sidebarPanes.xhrBreakpoints.clearBreakpointHighlight();
        }

        this._clearCurrentExecutionLine();
        this._updateDebuggerButtons();
    },

    get debuggingEnabled()
    {
        return this._debuggerEnabled;
    },

    enableDebugging: function()
    {
        if (this._debuggerEnabled)
            return;
        this.toggleDebugging(this.panelEnablerView.alwaysEnabled);
    },

    disableDebugging: function()
    {
        if (!this._debuggerEnabled)
            return;
        this.toggleDebugging(this.panelEnablerView.alwaysEnabled);
    },

    toggleDebugging: function(optionalAlways)
    {
        this._paused = false;
        this._waitingToPause = false;
        this._stepping = false;

        if (this._debuggerEnabled) {
            WebInspector.settings.debuggerEnabled.set(false);
            WebInspector.debuggerModel.disableDebugger();
        } else {
            WebInspector.settings.debuggerEnabled.set(!!optionalAlways);
            WebInspector.debuggerModel.enableDebugger();
        }
    },

    _togglePauseOnExceptions: function()
    {
        var nextStateMap = {};
        var stateEnum = WebInspector.ScriptsPanel.PauseOnExceptionsState;
        nextStateMap[stateEnum.DontPauseOnExceptions] = stateEnum.PauseOnAllExceptions;
        nextStateMap[stateEnum.PauseOnAllExceptions] = stateEnum.PauseOnUncaughtExceptions;
        nextStateMap[stateEnum.PauseOnUncaughtExceptions] = stateEnum.DontPauseOnExceptions;
        this._setPauseOnExceptions(nextStateMap[this._pauseOnExceptionButton.state]);
    },

    _togglePause: function()
    {
        if (this._paused) {
            this._paused = false;
            this._waitingToPause = false;
            DebuggerAgent.resume();
        } else {
            this._stepping = false;
            this._waitingToPause = true;
            DebuggerAgent.pause();
        }

        this._clearInterface();
    },

    _stepOverClicked: function()
    {
        if (!this._paused)
            return;

        this._paused = false;
        this._stepping = true;

        this._clearInterface();

        DebuggerAgent.stepOver();
    },

    _stepIntoClicked: function()
    {
        if (!this._paused)
            return;

        this._paused = false;
        this._stepping = true;

        this._clearInterface();

        DebuggerAgent.stepInto();
    },

    _stepOutClicked: function()
    {
        if (!this._paused)
            return;

        this._paused = false;
        this._stepping = true;

        this._clearInterface();

        DebuggerAgent.stepOut();
    },

    _toggleBreakpointsClicked: function(event)
    {
        WebInspector.debuggerModel.setBreakpointsActive(!WebInspector.debuggerModel.breakpointsActive());
    },

    _breakpointsActiveStateChanged: function(event)
    {
        var active = event.data;
        this._toggleBreakpointsButton.toggled = active;
        if (active) {
            this._toggleBreakpointsButton.title = WebInspector.UIString("Deactivate all breakpoints.");
            WebInspector.inspectorView.element.removeStyleClass("breakpoints-deactivated");
        } else {
            this._toggleBreakpointsButton.title = WebInspector.UIString("Activate all breakpoints.");
            WebInspector.inspectorView.element.addStyleClass("breakpoints-deactivated");
        }
    },

    _evaluateSelectionInConsole: function()
    {
        var selection = window.getSelection();
        if (selection.type === "Range" && !selection.isCollapsed)
            WebInspector.evaluateInConsole(selection.toString());
    },

    _createDebugToolbar: function()
    {
        var debugToolbar = document.createElement("div");
        debugToolbar.className = "status-bar";
        debugToolbar.id = "scripts-debug-toolbar";

        var title, handler, shortcuts;
        var platformSpecificModifier = WebInspector.KeyboardShortcut.Modifiers.CtrlOrMeta;

        // Continue.
        title = WebInspector.UIString("Pause script execution (%s).");
        handler = this._togglePause.bind(this);
        shortcuts = [];
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.F8));
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.Slash, platformSpecificModifier));
        this.pauseButton = this._createButtonAndRegisterShortcuts("scripts-pause", title, handler, shortcuts, WebInspector.UIString("Pause/Continue"));
        debugToolbar.appendChild(this.pauseButton);

        // Step over.
        title = WebInspector.UIString("Step over next function call (%s).");
        handler = this._stepOverClicked.bind(this);
        shortcuts = [];
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.F10));
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.SingleQuote, platformSpecificModifier));
        this.stepOverButton = this._createButtonAndRegisterShortcuts("scripts-step-over", title, handler, shortcuts, WebInspector.UIString("Step over"));
        debugToolbar.appendChild(this.stepOverButton);

        // Step into.
        title = WebInspector.UIString("Step into next function call (%s).");
        handler = this._stepIntoClicked.bind(this);
        shortcuts = [];
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.F11));
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.Semicolon, platformSpecificModifier));
        this.stepIntoButton = this._createButtonAndRegisterShortcuts("scripts-step-into", title, handler, shortcuts, WebInspector.UIString("Step into"));
        debugToolbar.appendChild(this.stepIntoButton);

        // Step out.
        title = WebInspector.UIString("Step out of current function (%s).");
        handler = this._stepOutClicked.bind(this);
        shortcuts = [];
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.F11, WebInspector.KeyboardShortcut.Modifiers.Shift));
        shortcuts.push(WebInspector.KeyboardShortcut.makeDescriptor(WebInspector.KeyboardShortcut.Keys.Semicolon, WebInspector.KeyboardShortcut.Modifiers.Shift | platformSpecificModifier));
        this.stepOutButton = this._createButtonAndRegisterShortcuts("scripts-step-out", title, handler, shortcuts, WebInspector.UIString("Step out"));
        debugToolbar.appendChild(this.stepOutButton);

        this._toggleBreakpointsButton = new WebInspector.StatusBarButton(WebInspector.UIString("Deactivate all breakpoints."), "toggle-breakpoints");
        this._toggleBreakpointsButton.toggled = true;
        this._toggleBreakpointsButton.addEventListener("click", this._toggleBreakpointsClicked, this);
        debugToolbar.appendChild(this._toggleBreakpointsButton.element);

        this.debuggerStatusElement = document.createElement("div");
        this.debuggerStatusElement.id = "scripts-debugger-status";
        debugToolbar.appendChild(this.debuggerStatusElement);

        return debugToolbar;
    },

    _createButtonAndRegisterShortcuts: function(buttonId, buttonTitle, handler, shortcuts, shortcutDescription)
    {
        var button = document.createElement("button");
        button.className = "status-bar-item";
        button.id = buttonId;
        button.title = String.vsprintf(buttonTitle, [shortcuts[0].name]);
        button.disabled = true;
        button.appendChild(document.createElement("img"));
        button.addEventListener("click", handler, false);

        var shortcutNames = [];
        for (var i = 0; i < shortcuts.length; ++i) {
            this.registerShortcut(shortcuts[i].key, handler);
            shortcutNames.push(shortcuts[i].name);
        }
        var section = WebInspector.shortcutsScreen.section(WebInspector.UIString("Scripts Panel"));
        section.addAlternateKeys(shortcutNames, shortcutDescription);

        return button;
    },

    searchCanceled: function()
    {
        if (this._searchView)
            this._searchView.searchCanceled();

        delete this._searchView;
        delete this._searchQuery;
    },

    performSearch: function(query)
    {
        WebInspector.searchController.updateSearchMatchesCount(0, this);

        if (!this.visibleView)
            return;

        // Call searchCanceled since it will reset everything we need before doing a new search.
        this.searchCanceled();

        this._searchView = this.visibleView;
        this._searchQuery = query;

        function finishedCallback(view, searchMatches)
        {
            if (!searchMatches)
                return;

            WebInspector.searchController.updateSearchMatchesCount(searchMatches, this);
            view.jumpToFirstSearchResult();
            WebInspector.searchController.updateCurrentMatchIndex(view.currentSearchResultIndex, this);
        }

        this._searchView.performSearch(query, finishedCallback.bind(this));
    },

    jumpToNextSearchResult: function()
    {
        if (!this._searchView)
            return;

        if (this._searchView !== this.visibleView) {
            this.performSearch(this._searchQuery);
            return;
        }

        if (this._searchView.showingLastSearchResult())
            this._searchView.jumpToFirstSearchResult();
        else
            this._searchView.jumpToNextSearchResult();
        WebInspector.searchController.updateCurrentMatchIndex(this._searchView.currentSearchResultIndex, this);
    },

    jumpToPreviousSearchResult: function()
    {
        if (!this._searchView)
            return;

        if (this._searchView !== this.visibleView) {
            this.performSearch(this._searchQuery);
            if (this._searchView)
                this._searchView.jumpToLastSearchResult();
            return;
        }

        if (this._searchView.showingFirstSearchResult())
            this._searchView.jumpToLastSearchResult();
        else
            this._searchView.jumpToPreviousSearchResult();
        WebInspector.searchController.updateCurrentMatchIndex(this._searchView.currentSearchResultIndex, this);
    },

    _toggleFormatSource: function()
    {
        this._toggleFormatSourceButton.toggled = !this._toggleFormatSourceButton.toggled;
        this._presentationModel.setFormatSource(this._toggleFormatSourceButton.toggled);
    },

    addToWatch: function(expression)
    {
        this.sidebarPanes.watchExpressions.addExpression(expression);
    }
}

WebInspector.ScriptsPanel.prototype.__proto__ = WebInspector.Panel.prototype;