blob: b125e7e525640ce1b3e99c85d285bdcd02271b62 [file] [log] [blame]
/*
* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
* Copyright (C) 2009 Joseph Pecoraro
*
* 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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.
*/
// Keep this ; so that concatenated version of the script worked.
;(function preloadImages()
{
(new Image()).src = "Images/clearConsoleButtonGlyph.png";
(new Image()).src = "Images/consoleButtonGlyph.png";
(new Image()).src = "Images/dockButtonGlyph.png";
(new Image()).src = "Images/enableOutlineButtonGlyph.png";
(new Image()).src = "Images/enableSolidButtonGlyph.png";
(new Image()).src = "Images/excludeButtonGlyph.png";
(new Image()).src = "Images/focusButtonGlyph.png";
(new Image()).src = "Images/largerResourcesButtonGlyph.png";
(new Image()).src = "Images/nodeSearchButtonGlyph.png";
(new Image()).src = "Images/pauseOnExceptionButtonGlyph.png";
(new Image()).src = "Images/percentButtonGlyph.png";
(new Image()).src = "Images/recordButtonGlyph.png";
(new Image()).src = "Images/recordToggledButtonGlyph.png";
(new Image()).src = "Images/reloadButtonGlyph.png";
(new Image()).src = "Images/undockButtonGlyph.png";
})();
var WebInspector = {
resources: {},
missingLocalizedStrings: {},
pendingDispatches: 0,
get platform()
{
if (!("_platform" in this))
this._platform = InspectorFrontendHost.platform();
return this._platform;
},
get platformFlavor()
{
if (!("_platformFlavor" in this))
this._platformFlavor = this._detectPlatformFlavor();
return this._platformFlavor;
},
_detectPlatformFlavor: function()
{
const userAgent = navigator.userAgent;
if (this.platform === "windows") {
var match = userAgent.match(/Windows NT (\d+)\.(?:\d+)/);
if (match && match[1] >= 6)
return WebInspector.PlatformFlavor.WindowsVista;
return null;
} else if (this.platform === "mac") {
var match = userAgent.match(/Mac OS X\s*(?:(\d+)_(\d+))?/);
if (!match || match[1] != 10)
return WebInspector.PlatformFlavor.MacSnowLeopard;
switch (Number(match[2])) {
case 4:
return WebInspector.PlatformFlavor.MacTiger;
case 5:
return WebInspector.PlatformFlavor.MacLeopard;
case 6:
default:
return WebInspector.PlatformFlavor.MacSnowLeopard;
}
}
return null;
},
get port()
{
if (!("_port" in this))
this._port = InspectorFrontendHost.port();
return this._port;
},
get previousFocusElement()
{
return this._previousFocusElement;
},
get currentFocusElement()
{
return this._currentFocusElement;
},
set currentFocusElement(x)
{
if (this._currentFocusElement !== x)
this._previousFocusElement = this._currentFocusElement;
this._currentFocusElement = x;
if (this._currentFocusElement) {
this._currentFocusElement.focus();
// Make a caret selection inside the new element if there isn't a range selection and
// there isn't already a caret selection inside.
var selection = window.getSelection();
if (selection.isCollapsed && !this._currentFocusElement.isInsertionCaretInside()) {
var selectionRange = this._currentFocusElement.ownerDocument.createRange();
selectionRange.setStart(this._currentFocusElement, 0);
selectionRange.setEnd(this._currentFocusElement, 0);
selection.removeAllRanges();
selection.addRange(selectionRange);
}
} else if (this._previousFocusElement)
this._previousFocusElement.blur();
},
resetFocusElement: function()
{
this.currentFocusElement = null;
this._previousFocusElement = null;
},
get currentPanel()
{
return this._currentPanel;
},
set currentPanel(x)
{
if (this._currentPanel === x)
return;
if (this._currentPanel)
this._currentPanel.hide();
this._currentPanel = x;
if (x) {
x.show();
WebInspector.searchController.activePanelChanged();
}
for (var panelName in WebInspector.panels) {
if (WebInspector.panels[panelName] === x) {
WebInspector.settings.lastActivePanel = panelName;
this._panelHistory.setPanel(panelName);
}
}
},
_createPanels: function()
{
var hiddenPanels = (InspectorFrontendHost.hiddenPanels() || "").split(',');
if (hiddenPanels.indexOf("elements") === -1)
this.panels.elements = new WebInspector.ElementsPanel();
if (hiddenPanels.indexOf("resources") === -1)
this.panels.resources = new WebInspector.ResourcesPanel();
if (hiddenPanels.indexOf("network") === -1)
this.panels.network = new WebInspector.NetworkPanel();
if (hiddenPanels.indexOf("scripts") === -1)
this.panels.scripts = new WebInspector.ScriptsPanel();
if (hiddenPanels.indexOf("timeline") === -1)
this.panels.timeline = new WebInspector.TimelinePanel();
if (hiddenPanels.indexOf("profiles") === -1)
this.panels.profiles = new WebInspector.ProfilesPanel();
if (hiddenPanels.indexOf("audits") === -1)
this.panels.audits = new WebInspector.AuditsPanel();
if (hiddenPanels.indexOf("console") === -1)
this.panels.console = new WebInspector.ConsolePanel();
},
get attached()
{
return this._attached;
},
set attached(x)
{
if (this._attached === x)
return;
this._attached = x;
var dockToggleButton = document.getElementById("dock-status-bar-item");
var body = document.body;
if (x) {
body.removeStyleClass("detached");
body.addStyleClass("attached");
dockToggleButton.title = WebInspector.UIString("Undock into separate window.");
} else {
body.removeStyleClass("attached");
body.addStyleClass("detached");
dockToggleButton.title = WebInspector.UIString("Dock to main window.");
}
// This may be called before onLoadedDone, hence the bulk of inspector objects may
// not be created yet.
if (WebInspector.searchController)
WebInspector.searchController.updateSearchLabel();
},
get errors()
{
return this._errors || 0;
},
set errors(x)
{
x = Math.max(x, 0);
if (this._errors === x)
return;
this._errors = x;
this._updateErrorAndWarningCounts();
},
get warnings()
{
return this._warnings || 0;
},
set warnings(x)
{
x = Math.max(x, 0);
if (this._warnings === x)
return;
this._warnings = x;
this._updateErrorAndWarningCounts();
},
_updateErrorAndWarningCounts: function()
{
var errorWarningElement = document.getElementById("error-warning-count");
if (!errorWarningElement)
return;
if (!this.errors && !this.warnings) {
errorWarningElement.addStyleClass("hidden");
return;
}
errorWarningElement.removeStyleClass("hidden");
errorWarningElement.removeChildren();
if (this.errors) {
var errorElement = document.createElement("span");
errorElement.id = "error-count";
errorElement.textContent = this.errors;
errorWarningElement.appendChild(errorElement);
}
if (this.warnings) {
var warningsElement = document.createElement("span");
warningsElement.id = "warning-count";
warningsElement.textContent = this.warnings;
errorWarningElement.appendChild(warningsElement);
}
if (this.errors) {
if (this.warnings) {
if (this.errors == 1) {
if (this.warnings == 1)
errorWarningElement.title = WebInspector.UIString("%d error, %d warning", this.errors, this.warnings);
else
errorWarningElement.title = WebInspector.UIString("%d error, %d warnings", this.errors, this.warnings);
} else if (this.warnings == 1)
errorWarningElement.title = WebInspector.UIString("%d errors, %d warning", this.errors, this.warnings);
else
errorWarningElement.title = WebInspector.UIString("%d errors, %d warnings", this.errors, this.warnings);
} else if (this.errors == 1)
errorWarningElement.title = WebInspector.UIString("%d error", this.errors);
else
errorWarningElement.title = WebInspector.UIString("%d errors", this.errors);
} else if (this.warnings == 1)
errorWarningElement.title = WebInspector.UIString("%d warning", this.warnings);
else if (this.warnings)
errorWarningElement.title = WebInspector.UIString("%d warnings", this.warnings);
else
errorWarningElement.title = null;
},
highlightDOMNode: function(nodeId)
{
if ("_hideDOMNodeHighlightTimeout" in this) {
clearTimeout(this._hideDOMNodeHighlightTimeout);
delete this._hideDOMNodeHighlightTimeout;
}
if (this._highlightedDOMNodeId === nodeId)
return;
this._highlightedDOMNodeId = nodeId;
if (nodeId)
DOMAgent.highlightDOMNode(nodeId);
else
DOMAgent.hideDOMNodeHighlight();
},
highlightDOMNodeForTwoSeconds: function(nodeId)
{
this.highlightDOMNode(nodeId);
this._hideDOMNodeHighlightTimeout = setTimeout(this.highlightDOMNode.bind(this, 0), 2000);
},
wireElementWithDOMNode: function(element, nodeId)
{
element.addEventListener("click", this._updateFocusedNode.bind(this, nodeId), false);
element.addEventListener("mouseover", this.highlightDOMNode.bind(this, nodeId), false);
element.addEventListener("mouseout", this.highlightDOMNode.bind(this, 0), false);
},
_updateFocusedNode: function(nodeId)
{
this.currentPanel = this.panels.elements;
this.panels.elements.updateFocusedNode(nodeId);
},
get networkResources()
{
return this.panels.network.resources;
},
networkResourceById: function(id)
{
return this.panels.network.resourceById(id);
},
forAllResources: function(callback)
{
WebInspector.resourceTreeModel.forAllResources(callback);
},
resourceForURL: function(url)
{
return this.resourceTreeModel.resourceForURL(url);
},
openLinkExternallyLabel: function()
{
return WebInspector.UIString("Open Link in New Window");
}
}
WebInspector.PlatformFlavor = {
WindowsVista: "windows-vista",
MacTiger: "mac-tiger",
MacLeopard: "mac-leopard",
MacSnowLeopard: "mac-snowleopard"
};
(function parseQueryParameters()
{
WebInspector.queryParamsObject = {};
var queryParams = window.location.search;
if (!queryParams)
return;
var params = queryParams.substring(1).split("&");
for (var i = 0; i < params.length; ++i) {
var pair = params[i].split("=");
WebInspector.queryParamsObject[pair[0]] = pair[1];
}
})();
WebInspector.loaded = function()
{
if ("page" in WebInspector.queryParamsObject) {
var page = WebInspector.queryParamsObject.page;
var host = "host" in WebInspector.queryParamsObject ? WebInspector.queryParamsObject.host : window.location.host;
WebInspector.socket = new WebSocket("ws://" + host + "/devtools/page/" + page);
WebInspector.socket.onmessage = function(message) { InspectorBackend.dispatch(message.data); }
WebInspector.socket.onerror = function(error) { console.error(error); }
WebInspector.socket.onopen = function() {
InspectorFrontendHost.sendMessageToBackend = WebInspector.socket.send.bind(WebInspector.socket);
InspectorFrontendHost.loaded = WebInspector.socket.send.bind(WebInspector.socket, "loaded");
WebInspector.doLoadedDone();
}
return;
}
WebInspector.doLoadedDone();
}
WebInspector.doLoadedDone = function()
{
InspectorFrontendHost.loaded();
var platform = WebInspector.platform;
document.body.addStyleClass("platform-" + platform);
var flavor = WebInspector.platformFlavor;
if (flavor)
document.body.addStyleClass("platform-" + flavor);
var port = WebInspector.port;
document.body.addStyleClass("port-" + port);
if (WebInspector.socket)
document.body.addStyleClass("remote");
WebInspector.settings = new WebInspector.Settings();
this._registerShortcuts();
// set order of some sections explicitly
WebInspector.shortcutsHelp.section(WebInspector.UIString("Console"));
WebInspector.shortcutsHelp.section(WebInspector.UIString("Elements Panel"));
this.drawer = new WebInspector.Drawer();
this.console = new WebInspector.ConsoleView(this.drawer);
this.drawer.visibleView = this.console;
this.networkManager = new WebInspector.NetworkManager();
this.resourceTreeModel = new WebInspector.ResourceTreeModel();
this.domAgent = new WebInspector.DOMAgent();
InspectorBackend.registerDomainDispatcher("Inspector", this);
InspectorBackend.registerDomainDispatcher("Page", this);
this.resourceCategories = {
documents: new WebInspector.ResourceCategory("documents", WebInspector.UIString("Documents"), "rgb(47,102,236)"),
stylesheets: new WebInspector.ResourceCategory("stylesheets", WebInspector.UIString("Stylesheets"), "rgb(157,231,119)"),
images: new WebInspector.ResourceCategory("images", WebInspector.UIString("Images"), "rgb(164,60,255)"),
scripts: new WebInspector.ResourceCategory("scripts", WebInspector.UIString("Scripts"), "rgb(255,121,0)"),
xhr: new WebInspector.ResourceCategory("xhr", WebInspector.UIString("XHR"), "rgb(231,231,10)"),
fonts: new WebInspector.ResourceCategory("fonts", WebInspector.UIString("Fonts"), "rgb(255,82,62)"),
websockets: new WebInspector.ResourceCategory("websockets", WebInspector.UIString("WebSockets"), "rgb(186,186,186)"), // FIXME: Decide the color.
other: new WebInspector.ResourceCategory("other", WebInspector.UIString("Other"), "rgb(186,186,186)")
};
this.cssModel = new WebInspector.CSSStyleModel();
this.debuggerModel = new WebInspector.DebuggerModel();
this.searchController = new WebInspector.SearchController();
this.domBreakpointsSidebarPane = new WebInspector.DOMBreakpointsSidebarPane();
this.panels = {};
this._createPanels();
this._panelHistory = new WebInspector.PanelHistory();
this.toolbar = new WebInspector.Toolbar();
this.panelOrder = [];
for (var panelName in this.panels)
this.addPanel(this.panels[panelName]);
this.Tips = {
ResourceNotCompressed: {id: 0, message: WebInspector.UIString("You could save bandwidth by having your web server compress this transfer with gzip or zlib.")}
};
this.Warnings = {
IncorrectMIMEType: {id: 0, message: WebInspector.UIString("Resource interpreted as %s but transferred with MIME type %s.")}
};
this.addMainEventListeners(document);
window.addEventListener("resize", this.windowResize.bind(this), true);
document.addEventListener("focus", this.focusChanged.bind(this), true);
document.addEventListener("keydown", this.documentKeyDown.bind(this), false);
document.addEventListener("beforecopy", this.documentCanCopy.bind(this), true);
document.addEventListener("copy", this.documentCopy.bind(this), true);
document.addEventListener("contextmenu", this.contextMenuEventFired.bind(this), true);
var dockToggleButton = document.getElementById("dock-status-bar-item");
dockToggleButton.addEventListener("click", this.toggleAttach.bind(this), false);
if (this.attached)
dockToggleButton.title = WebInspector.UIString("Undock into separate window.");
else
dockToggleButton.title = WebInspector.UIString("Dock to main window.");
var errorWarningCount = document.getElementById("error-warning-count");
errorWarningCount.addEventListener("click", this.showConsole.bind(this), false);
this._updateErrorAndWarningCounts();
this.extensionServer.initExtensions();
if (WebInspector.settings.monitoringXHREnabled)
ConsoleAgent.setMonitoringXHREnabled(true);
ConsoleAgent.enable(this.console.setConsoleMessageExpiredCount.bind(this.console));
DatabaseAgent.enable();
WebInspector.showPanel(WebInspector.settings.lastActivePanel);
function propertyNamesCallback(error, names)
{
if (!error)
WebInspector.cssNameCompletions = new WebInspector.CSSCompletions(names);
}
// As a DOMAgent method, this needs to happen after the frontend has loaded and the agent is available.
CSSAgent.getSupportedCSSProperties(propertyNamesCallback);
}
WebInspector.addPanel = function(panel)
{
this.panelOrder.push(panel);
this.toolbar.addPanel(panel);
}
var windowLoaded = function()
{
var localizedStringsURL = InspectorFrontendHost.localizedStringsURL();
if (localizedStringsURL) {
var localizedStringsScriptElement = document.createElement("script");
localizedStringsScriptElement.addEventListener("load", WebInspector.loaded.bind(WebInspector), false);
localizedStringsScriptElement.type = "text/javascript";
localizedStringsScriptElement.src = localizedStringsURL;
document.head.appendChild(localizedStringsScriptElement);
} else
WebInspector.loaded();
window.removeEventListener("DOMContentLoaded", windowLoaded, false);
delete windowLoaded;
};
window.addEventListener("DOMContentLoaded", windowLoaded, false);
// We'd like to enforce asynchronous interaction between the inspector controller and the frontend.
// It is needed to prevent re-entering the backend code.
// Also, native dispatches do not guarantee setTimeouts to be serialized, so we
// enforce serialization using 'messagesToDispatch' queue. It is also important that JSC debugger
// tests require that each command was dispatch within individual timeout callback, so we don't batch them.
var messagesToDispatch = [];
WebInspector.dispatch = function(message) {
messagesToDispatch.push(message);
setTimeout(function() {
InspectorBackend.dispatch(messagesToDispatch.shift());
}, 0);
}
WebInspector.dispatchMessageFromBackend = function(messageObject)
{
WebInspector.dispatch(messageObject);
}
WebInspector.windowResize = function(event)
{
if (this.currentPanel)
this.currentPanel.resize();
this.drawer.resize();
this.toolbar.resize();
}
WebInspector.windowFocused = function(event)
{
// Fires after blur, so when focusing on either the main inspector
// or an <iframe> within the inspector we should always remove the
// "inactive" class.
if (event.target.document.nodeType === Node.DOCUMENT_NODE)
document.body.removeStyleClass("inactive");
}
WebInspector.windowBlurred = function(event)
{
// Leaving the main inspector or an <iframe> within the inspector.
// We can add "inactive" now, and if we are moving the focus to another
// part of the inspector then windowFocused will correct this.
if (event.target.document.nodeType === Node.DOCUMENT_NODE)
document.body.addStyleClass("inactive");
}
WebInspector.focusChanged = function(event)
{
this.currentFocusElement = event.target;
}
WebInspector.setAttachedWindow = function(attached)
{
this.attached = attached;
}
WebInspector.close = function(event)
{
if (this._isClosing)
return;
this._isClosing = true;
InspectorFrontendHost.closeWindow();
}
WebInspector.disconnectFromBackend = function()
{
InspectorFrontendHost.disconnectFromBackend();
}
WebInspector.documentClick = function(event)
{
var anchor = event.target.enclosingNodeOrSelfWithNodeName("a");
if (!anchor || anchor.target === "_blank")
return;
// Prevent the link from navigating, since we don't do any navigation by following links normally.
event.preventDefault();
event.stopPropagation();
function followLink()
{
if (WebInspector._showAnchorLocation(anchor))
return;
const profileMatch = WebInspector.ProfileType.URLRegExp.exec(anchor.href);
if (profileMatch) {
WebInspector.showProfileForURL(anchor.href);
return;
}
var parsedURL = anchor.href.asParsedURL();
if (parsedURL && parsedURL.scheme === "webkit-link-action") {
if (parsedURL.host === "show-panel") {
var panel = parsedURL.path.substring(1);
if (WebInspector.panels[panel])
WebInspector.showPanel(panel);
}
return;
}
WebInspector.showPanel("resources");
}
if (WebInspector.followLinkTimeout)
clearTimeout(WebInspector.followLinkTimeout);
if (anchor.preventFollowOnDoubleClick) {
// Start a timeout if this is the first click, if the timeout is canceled
// before it fires, then a double clicked happened or another link was clicked.
if (event.detail === 1)
WebInspector.followLinkTimeout = setTimeout(followLink, 333);
return;
}
followLink();
}
WebInspector.openResource = function(resourceURL, inResourcesPanel)
{
var resource = WebInspector.resourceForURL(resourceURL);
if (inResourcesPanel && resource) {
WebInspector.panels.resources.showResource(resource);
WebInspector.showPanel("resources");
} else
PageAgent.openInInspectedWindow(resource ? resource.url : resourceURL);
}
WebInspector._registerShortcuts = function()
{
var shortcut = WebInspector.KeyboardShortcut;
var section = WebInspector.shortcutsHelp.section(WebInspector.UIString("All Panels"));
var keys = [
shortcut.shortcutToString("]", shortcut.Modifiers.CtrlOrMeta),
shortcut.shortcutToString("[", shortcut.Modifiers.CtrlOrMeta)
];
section.addRelatedKeys(keys, WebInspector.UIString("Next/previous panel"));
section.addKey(shortcut.shortcutToString(shortcut.Keys.Esc), WebInspector.UIString("Toggle console"));
section.addKey(shortcut.shortcutToString("f", shortcut.Modifiers.CtrlOrMeta), WebInspector.UIString("Search"));
if (WebInspector.isMac()) {
keys = [
shortcut.shortcutToString("g", shortcut.Modifiers.Meta),
shortcut.shortcutToString("g", shortcut.Modifiers.Meta | shortcut.Modifiers.Shift)
];
section.addRelatedKeys(keys, WebInspector.UIString("Find next/previous"));
}
}
WebInspector.documentKeyDown = function(event)
{
var isInputElement = event.target.nodeName === "INPUT";
var isInEditMode = event.target.enclosingNodeOrSelfWithClass("text-prompt") || WebInspector.isEditingAnyField();
const helpKey = WebInspector.isMac() ? "U+003F" : "U+00BF"; // "?" for both platforms
if (event.keyIdentifier === "F1" ||
(event.keyIdentifier === helpKey && event.shiftKey && (!isInEditMode && !isInputElement || event.metaKey))) {
WebInspector.shortcutsHelp.show();
event.stopPropagation();
event.preventDefault();
return;
}
if (WebInspector.isEditingAnyField())
return;
if (this.currentFocusElement && this.currentFocusElement.handleKeyEvent) {
this.currentFocusElement.handleKeyEvent(event);
if (event.handled) {
event.preventDefault();
return;
}
}
if (this.currentPanel && this.currentPanel.handleShortcut) {
this.currentPanel.handleShortcut(event);
if (event.handled) {
event.preventDefault();
return;
}
}
WebInspector.searchController.handleShortcut(event);
if (event.handled) {
event.preventDefault();
return;
}
var isMac = WebInspector.isMac();
switch (event.keyIdentifier) {
case "Left":
var isBackKey = !isInEditMode && (isMac ? event.metaKey : event.ctrlKey);
if (isBackKey && this._panelHistory.canGoBack()) {
this._panelHistory.goBack();
event.preventDefault();
}
break;
case "Right":
var isForwardKey = !isInEditMode && (isMac ? event.metaKey : event.ctrlKey);
if (isForwardKey && this._panelHistory.canGoForward()) {
this._panelHistory.goForward();
event.preventDefault();
}
break;
case "U+001B": // Escape key
event.preventDefault();
if (this.drawer.fullPanel)
return;
this.drawer.visible = !this.drawer.visible;
break;
// Windows and Mac have two different definitions of [, so accept both.
case "U+005B":
case "U+00DB": // [ key
if (isMac)
var isRotateLeft = event.metaKey && !event.shiftKey && !event.ctrlKey && !event.altKey;
else
var isRotateLeft = event.ctrlKey && !event.shiftKey && !event.metaKey && !event.altKey;
if (isRotateLeft) {
var index = this.panelOrder.indexOf(this.currentPanel);
index = (index === 0) ? this.panelOrder.length - 1 : index - 1;
this.panelOrder[index].toolbarItem.click();
event.preventDefault();
}
break;
// Windows and Mac have two different definitions of ], so accept both.
case "U+005D":
case "U+00DD": // ] key
if (isMac)
var isRotateRight = event.metaKey && !event.shiftKey && !event.ctrlKey && !event.altKey;
else
var isRotateRight = event.ctrlKey && !event.shiftKey && !event.metaKey && !event.altKey;
if (isRotateRight) {
var index = this.panelOrder.indexOf(this.currentPanel);
index = (index + 1) % this.panelOrder.length;
this.panelOrder[index].toolbarItem.click();
event.preventDefault();
}
break;
case "U+0052": // R key
if ((event.metaKey && isMac) || (event.ctrlKey && !isMac)) {
PageAgent.reloadPage(event.shiftKey);
event.preventDefault();
}
break;
case "F5":
if (!isMac)
PageAgent.reloadPage(event.ctrlKey || event.shiftKey);
break;
}
}
WebInspector.documentCanCopy = function(event)
{
if (this.currentPanel && this.currentPanel.handleCopyEvent)
event.preventDefault();
}
WebInspector.documentCopy = function(event)
{
if (this.currentPanel && this.currentPanel.handleCopyEvent)
this.currentPanel.handleCopyEvent(event);
}
WebInspector.contextMenuEventFired = function(event)
{
if (event.handled || event.target.hasStyleClass("popup-glasspane"))
event.preventDefault();
}
WebInspector.animateStyle = function(animations, duration, callback)
{
var interval;
var complete = 0;
var hasCompleted = false;
const intervalDuration = (1000 / 30); // 30 frames per second.
const animationsLength = animations.length;
const propertyUnit = {opacity: ""};
const defaultUnit = "px";
function cubicInOut(t, b, c, d)
{
if ((t/=d/2) < 1) return c/2*t*t*t + b;
return c/2*((t-=2)*t*t + 2) + b;
}
// Pre-process animations.
for (var i = 0; i < animationsLength; ++i) {
var animation = animations[i];
var element = null, start = null, end = null, key = null;
for (key in animation) {
if (key === "element")
element = animation[key];
else if (key === "start")
start = animation[key];
else if (key === "end")
end = animation[key];
}
if (!element || !end)
continue;
if (!start) {
var computedStyle = element.ownerDocument.defaultView.getComputedStyle(element);
start = {};
for (key in end)
start[key] = parseInt(computedStyle.getPropertyValue(key));
animation.start = start;
} else
for (key in start)
element.style.setProperty(key, start[key] + (key in propertyUnit ? propertyUnit[key] : defaultUnit));
}
function animateLoop()
{
// Advance forward.
complete += intervalDuration;
var next = complete + intervalDuration;
// Make style changes.
for (var i = 0; i < animationsLength; ++i) {
var animation = animations[i];
var element = animation.element;
var start = animation.start;
var end = animation.end;
if (!element || !end)
continue;
var style = element.style;
for (key in end) {
var endValue = end[key];
if (next < duration) {
var startValue = start[key];
var newValue = cubicInOut(complete, startValue, endValue - startValue, duration);
style.setProperty(key, newValue + (key in propertyUnit ? propertyUnit[key] : defaultUnit));
} else
style.setProperty(key, endValue + (key in propertyUnit ? propertyUnit[key] : defaultUnit));
}
}
// End condition.
if (complete >= duration) {
hasCompleted = true;
clearInterval(interval);
if (callback)
callback();
}
}
function forceComplete()
{
if (!hasCompleted) {
complete = duration;
animateLoop();
}
}
function cancel()
{
hasCompleted = true;
clearInterval(interval);
}
interval = setInterval(animateLoop, intervalDuration);
return {
cancel: cancel,
forceComplete: forceComplete
};
}
WebInspector.toggleAttach = function()
{
if (!this.attached)
InspectorFrontendHost.requestAttachWindow();
else
InspectorFrontendHost.requestDetachWindow();
}
WebInspector.elementDragStart = function(element, dividerDrag, elementDragEnd, event, cursor)
{
if (this._elementDraggingEventListener || this._elementEndDraggingEventListener)
this.elementDragEnd(event);
this._elementDraggingEventListener = dividerDrag;
this._elementEndDraggingEventListener = elementDragEnd;
document.addEventListener("mousemove", dividerDrag, true);
document.addEventListener("mouseup", elementDragEnd, true);
document.body.style.cursor = cursor;
event.preventDefault();
}
WebInspector.elementDragEnd = function(event)
{
document.removeEventListener("mousemove", this._elementDraggingEventListener, true);
document.removeEventListener("mouseup", this._elementEndDraggingEventListener, true);
document.body.style.removeProperty("cursor");
delete this._elementDraggingEventListener;
delete this._elementEndDraggingEventListener;
event.preventDefault();
}
WebInspector.toggleSearchingForNode = function()
{
if (this.panels.elements) {
this.showPanel("elements");
this.panels.elements.toggleSearchingForNode();
}
}
WebInspector.showConsole = function()
{
this.drawer.showView(this.console);
}
WebInspector.showPanel = function(panel)
{
if (!(panel in this.panels))
panel = "elements";
this.currentPanel = this.panels[panel];
}
WebInspector.startUserInitiatedDebugging = function()
{
this.currentPanel = this.panels.scripts;
WebInspector.debuggerModel.enableDebugger();
}
WebInspector.domContentEventFired = function(time)
{
this.panels.audits.mainResourceDOMContentTime = time;
this.mainResourceDOMContentTime = time;
}
WebInspector.loadEventFired = function(time)
{
this.panels.audits.mainResourceLoadTime = time;
this.panels.resources.loadEventFired();
this.mainResourceLoadTime = time;
}
WebInspector.searchingForNodeWasEnabled = function()
{
this.panels.elements.searchingForNodeWasEnabled();
}
WebInspector.searchingForNodeWasDisabled = function()
{
this.panels.elements.searchingForNodeWasDisabled();
}
WebInspector.reset = function()
{
this.debuggerModel.reset();
for (var panelName in this.panels) {
var panel = this.panels[panelName];
if ("reset" in panel)
panel.reset();
}
this.resources = {};
this.highlightDOMNode(0);
this.console.clearMessages();
this.extensionServer.notifyInspectorReset();
}
WebInspector.bringToFront = function()
{
InspectorFrontendHost.bringToFront();
}
WebInspector.inspectedURLChanged = function(url)
{
InspectorFrontendHost.inspectedURLChanged(url);
this.domBreakpointsSidebarPane.setInspectedURL(url);
this.extensionServer.notifyInspectedURLChanged(url);
}
WebInspector.didCreateWorker = function()
{
var workersPane = WebInspector.panels.scripts.sidebarPanes.workers;
workersPane.addWorker.apply(workersPane, arguments);
}
WebInspector.didDestroyWorker = function()
{
var workersPane = WebInspector.panels.scripts.sidebarPanes.workers;
workersPane.removeWorker.apply(workersPane, arguments);
}
WebInspector.log = function(message, messageLevel)
{
// remember 'this' for setInterval() callback
var self = this;
// return indication if we can actually log a message
function isLogAvailable()
{
return WebInspector.ConsoleMessage && WebInspector.RemoteObject && self.console;
}
// flush the queue of pending messages
function flushQueue()
{
var queued = WebInspector.log.queued;
if (!queued)
return;
for (var i = 0; i < queued.length; ++i)
logMessage(queued[i]);
delete WebInspector.log.queued;
}
// flush the queue if it console is available
// - this function is run on an interval
function flushQueueIfAvailable()
{
if (!isLogAvailable())
return;
clearInterval(WebInspector.log.interval);
delete WebInspector.log.interval;
flushQueue();
}
// actually log the message
function logMessage(message)
{
var repeatCount = 1;
if (message == WebInspector.log.lastMessage)
repeatCount = WebInspector.log.repeatCount + 1;
WebInspector.log.lastMessage = message;
WebInspector.log.repeatCount = repeatCount;
// ConsoleMessage expects a proxy object
message = new WebInspector.RemoteObject.fromPrimitiveValue(message);
// post the message
var msg = new WebInspector.ConsoleMessage(
WebInspector.ConsoleMessage.MessageSource.Other,
WebInspector.ConsoleMessage.MessageType.Log,
messageLevel || WebInspector.ConsoleMessage.MessageLevel.Debug,
-1,
null,
repeatCount,
null,
[message],
null);
self.console.addMessage(msg);
}
// if we can't log the message, queue it
if (!isLogAvailable()) {
if (!WebInspector.log.queued)
WebInspector.log.queued = [];
WebInspector.log.queued.push(message);
if (!WebInspector.log.interval)
WebInspector.log.interval = setInterval(flushQueueIfAvailable, 1000);
return;
}
// flush the pending queue if any
flushQueue();
// log the message
logMessage(message);
}
WebInspector.drawLoadingPieChart = function(canvas, percent) {
var g = canvas.getContext("2d");
var darkColor = "rgb(122, 168, 218)";
var lightColor = "rgb(228, 241, 251)";
var cx = 8;
var cy = 8;
var r = 7;
g.beginPath();
g.arc(cx, cy, r, 0, Math.PI * 2, false);
g.closePath();
g.lineWidth = 1;
g.strokeStyle = darkColor;
g.fillStyle = lightColor;
g.fill();
g.stroke();
var startangle = -Math.PI / 2;
var endangle = startangle + (percent * Math.PI * 2);
g.beginPath();
g.moveTo(cx, cy);
g.arc(cx, cy, r, startangle, endangle, false);
g.closePath();
g.fillStyle = darkColor;
g.fill();
}
WebInspector.inspect = function(payload, hints)
{
var object = WebInspector.RemoteObject.fromPayload(payload);
if (object.type === "node") {
// Request node from backend and focus it.
object.pushNodeToFrontend(WebInspector.updateFocusedNode.bind(WebInspector), object.release.bind(object));
return;
}
if (hints.databaseId) {
WebInspector.currentPanel = WebInspector.panels.resources;
WebInspector.panels.resources.selectDatabase(hints.databaseId);
} else if (hints.domStorageId) {
WebInspector.currentPanel = WebInspector.panels.resources;
WebInspector.panels.resources.selectDOMStorage(hints.domStorageId);
}
object.release();
}
WebInspector.updateFocusedNode = function(nodeId)
{
this._updateFocusedNode(nodeId);
this.highlightDOMNodeForTwoSeconds(nodeId);
}
WebInspector.displayNameForURL = function(url)
{
if (!url)
return "";
var resource = this.resourceForURL(url);
if (resource)
return resource.displayName;
if (!WebInspector.mainResource)
return url.trimURL("");
var lastPathComponent = WebInspector.mainResource.lastPathComponent;
var index = WebInspector.mainResource.url.indexOf(lastPathComponent);
if (index !== -1 && index + lastPathComponent.length === WebInspector.mainResource.url.length) {
var baseURL = WebInspector.mainResource.url.substring(0, index);
if (url.indexOf(baseURL) === 0)
return url.substring(index);
}
return url.trimURL(WebInspector.mainResource.domain);
}
WebInspector._showAnchorLocation = function(anchor)
{
var preferedPanel = this.panels[anchor.getAttribute("preferred_panel") || "resources"];
if (WebInspector._showAnchorLocationInPanel(anchor, preferedPanel))
return true;
if (preferedPanel !== this.panels.resources && WebInspector._showAnchorLocationInPanel(anchor, this.panels.resources))
return true;
return false;
}
WebInspector._showAnchorLocationInPanel = function(anchor, panel)
{
if (!panel.canShowAnchorLocation(anchor))
return false;
// FIXME: support webkit-html-external-link links here.
if (anchor.hasStyleClass("webkit-html-external-link")) {
anchor.removeStyleClass("webkit-html-external-link");
anchor.addStyleClass("webkit-html-resource-link");
}
this.currentPanel = panel;
if (this.drawer)
this.drawer.immediatelyFinishAnimation();
this.currentPanel.showAnchorLocation(anchor);
return true;
}
WebInspector.linkifyStringAsFragment = function(string)
{
var container = document.createDocumentFragment();
var linkStringRegEx = /(?:[a-zA-Z][a-zA-Z0-9+.-]{2,}:\/\/|www\.)[\w$\-_+*'=\|\/\\(){}[\]%@&#~,:;.!?]{2,}[\w$\-_+*=\|\/\\({%@&#~]/;
var lineColumnRegEx = /:(\d+)(:(\d+))?$/;
while (string) {
var linkString = linkStringRegEx.exec(string);
if (!linkString)
break;
linkString = linkString[0];
var title = linkString;
var linkIndex = string.indexOf(linkString);
var nonLink = string.substring(0, linkIndex);
container.appendChild(document.createTextNode(nonLink));
var profileStringMatches = WebInspector.ProfileType.URLRegExp.exec(title);
if (profileStringMatches)
title = WebInspector.panels.profiles.displayTitleForProfileLink(profileStringMatches[2], profileStringMatches[1]);
var realURL = (linkString.indexOf("www.") === 0 ? "http://" + linkString : linkString);
var lineColumnMatch = lineColumnRegEx.exec(realURL);
if (lineColumnMatch)
realURL = realURL.substring(0, realURL.length - lineColumnMatch[0].length);
var hasResourceWithURL = !!WebInspector.resourceForURL(realURL);
var urlNode = WebInspector.linkifyURLAsNode(realURL, title, null, hasResourceWithURL);
container.appendChild(urlNode);
if (lineColumnMatch) {
urlNode.setAttribute("line_number", lineColumnMatch[1]);
urlNode.setAttribute("preferred_panel", "scripts");
}
string = string.substring(linkIndex + linkString.length, string.length);
}
if (string)
container.appendChild(document.createTextNode(string));
return container;
}
WebInspector.showProfileForURL = function(url)
{
WebInspector.showPanel("profiles");
WebInspector.panels.profiles.showProfileForURL(url);
}
WebInspector.linkifyURLAsNode = function(url, linkText, classes, isExternal, tooltipText)
{
if (!linkText)
linkText = url;
classes = (classes ? classes + " " : "");
classes += isExternal ? "webkit-html-external-link" : "webkit-html-resource-link";
var a = document.createElement("a");
a.href = url;
a.className = classes;
if (typeof tooltipText === "undefined")
a.title = url;
else if (typeof tooltipText !== "string" || tooltipText.length)
a.title = tooltipText;
a.textContent = linkText;
a.style.maxWidth = "100%";
return a;
}
WebInspector.linkifyURL = function(url, linkText, classes, isExternal, tooltipText)
{
// Use the DOM version of this function so as to avoid needing to escape attributes.
// FIXME: Get rid of linkifyURL entirely.
return WebInspector.linkifyURLAsNode(url, linkText, classes, isExternal, tooltipText).outerHTML;
}
WebInspector.linkifyResourceAsNode = function(url, preferredPanel, lineNumber, classes, tooltipText)
{
var linkText = WebInspector.displayNameForURL(url);
if (lineNumber)
linkText += ":" + lineNumber;
var node = WebInspector.linkifyURLAsNode(url, linkText, classes, false, tooltipText);
node.setAttribute("line_number", lineNumber);
node.setAttribute("preferred_panel", preferredPanel);
return node;
}
WebInspector.resourceURLForRelatedNode = function(node, url)
{
if (!url || url.indexOf("://") > 0)
return url;
for (var frameOwnerCandidate = node; frameOwnerCandidate; frameOwnerCandidate = frameOwnerCandidate.parentNode) {
if (frameOwnerCandidate.documentURL) {
var result = WebInspector.completeURL(frameOwnerCandidate.documentURL, url);
if (result)
return result;
break;
}
}
// documentURL not found or has bad value
var resourceURL = url;
function callback(resource)
{
if (resource.path === url) {
resourceURL = resource.url;
return true;
}
}
WebInspector.forAllResources(callback);
return resourceURL;
}
WebInspector.completeURL = function(baseURL, href)
{
if (href) {
// Return absolute URLs as-is.
var parsedHref = href.asParsedURL();
if (parsedHref && parsedHref.scheme)
return href;
}
var parsedURL = baseURL.asParsedURL();
if (parsedURL) {
var path = href;
if (path.charAt(0) !== "/") {
var basePath = parsedURL.path;
// A href of "?foo=bar" implies "basePath?foo=bar".
// With "basePath?a=b" and "?foo=bar" we should get "basePath?foo=bar".
var prefix;
if (path.charAt(0) === "?") {
var basePathCutIndex = basePath.indexOf("?");
if (basePathCutIndex !== -1)
prefix = basePath.substring(0, basePathCutIndex);
else
prefix = basePath;
} else
prefix = basePath.substring(0, basePath.lastIndexOf("/")) + "/";
path = prefix + path;
} else if (path.length > 1 && path.charAt(1) === "/") {
// href starts with "//" which is a full URL with the protocol dropped (use the baseURL protocol).
return parsedURL.scheme + ":" + path;
}
return parsedURL.scheme + "://" + parsedURL.host + (parsedURL.port ? (":" + parsedURL.port) : "") + path;
}
return null;
}
WebInspector.addMainEventListeners = function(doc)
{
doc.defaultView.addEventListener("focus", this.windowFocused.bind(this), false);
doc.defaultView.addEventListener("blur", this.windowBlurred.bind(this), false);
doc.addEventListener("click", this.documentClick.bind(this), true);
}
WebInspector.frontendReused = function()
{
this.networkManager.frontendReused();
this.resourceTreeModel.frontendReused();
WebInspector.panels.network.clear();
this.reset();
}
WebInspector.UIString = function(string)
{
if (window.localizedStrings && string in window.localizedStrings)
string = window.localizedStrings[string];
else {
if (!(string in WebInspector.missingLocalizedStrings)) {
if (!WebInspector.InspectorBackendStub)
console.warn("Localized string \"" + string + "\" not found.");
WebInspector.missingLocalizedStrings[string] = true;
}
if (Preferences.showMissingLocalizedStrings)
string += " (not localized)";
}
return String.vsprintf(string, Array.prototype.slice.call(arguments, 1));
}
WebInspector.formatLocalized = function(format, substitutions, formatters, initialValue, append)
{
return String.format(WebInspector.UIString(format), substitutions, formatters, initialValue, append);
}
WebInspector.isMac = function()
{
if (!("_isMac" in this))
this._isMac = WebInspector.platform === "mac";
return this._isMac;
}
WebInspector.isBeingEdited = function(element)
{
return element.__editing;
}
WebInspector.markBeingEdited = function(element, value)
{
if (value) {
if (element.__editing)
return false;
element.__editing = true;
WebInspector.__editingCount = (WebInspector.__editingCount || 0) + 1;
} else {
if (!element.__editing)
return false;
delete element.__editing;
--WebInspector.__editingCount;
}
return true;
}
WebInspector.isEditingAnyField = function()
{
return !!WebInspector.__editingCount;
}
// Available config fields (all optional):
// context: Object - an arbitrary context object to be passed to the commit and cancel handlers
// commitHandler: Function - handles editing "commit" outcome
// cancelHandler: Function - handles editing "cancel" outcome
// customFinishHandler: Function - custom finish handler for the editing session (invoked on keydown)
// pasteHandler: Function - handles the "paste" event, return values are the same as those for customFinishHandler
// multiline: Boolean - whether the edited element is multiline
WebInspector.startEditing = function(element, config)
{
if (!WebInspector.markBeingEdited(element, true))
return;
config = config || {};
var committedCallback = config.commitHandler;
var cancelledCallback = config.cancelHandler;
var pasteCallback = config.pasteHandler;
var context = config.context;
var oldText = getContent(element);
var moveDirection = "";
element.addStyleClass("editing");
var oldTabIndex = element.tabIndex;
if (element.tabIndex < 0)
element.tabIndex = 0;
function blurEventListener() {
editingCommitted.call(element);
}
function getContent(element) {
if (element.tagName === "INPUT" && element.type === "text")
return element.value;
else
return element.textContent;
}
function cleanUpAfterEditing() {
WebInspector.markBeingEdited(element, false);
this.removeStyleClass("editing");
this.tabIndex = oldTabIndex;
this.scrollTop = 0;
this.scrollLeft = 0;
element.removeEventListener("blur", blurEventListener, false);
element.removeEventListener("keydown", keyDownEventListener, true);
if (pasteCallback)
element.removeEventListener("paste", pasteEventListener, true);
if (element === WebInspector.currentFocusElement || element.isAncestor(WebInspector.currentFocusElement))
WebInspector.currentFocusElement = WebInspector.previousFocusElement;
}
function editingCancelled() {
if (this.tagName === "INPUT" && this.type === "text")
this.value = oldText;
else
this.textContent = oldText;
cleanUpAfterEditing.call(this);
if (cancelledCallback)
cancelledCallback(this, context);
}
function editingCommitted() {
cleanUpAfterEditing.call(this);
if (committedCallback)
committedCallback(this, getContent(this), oldText, context, moveDirection);
}
function defaultFinishHandler(event)
{
var isMetaOrCtrl = WebInspector.isMac() ?
event.metaKey && !event.shiftKey && !event.ctrlKey && !event.altKey :
event.ctrlKey && !event.shiftKey && !event.metaKey && !event.altKey;
if (isEnterKey(event) && (event.isMetaOrCtrlForTest || !config.multiline || isMetaOrCtrl))
return "commit";
else if (event.keyCode === WebInspector.KeyboardShortcut.Keys.Esc.code)
return "cancel";
else if (event.keyIdentifier === "U+0009") // Tab key
return "move-" + (event.shiftKey ? "backward" : "forward");
}
function handleEditingResult(result, event)
{
if (result === "commit") {
editingCommitted.call(element);
event.preventDefault();
event.stopPropagation();
} else if (result === "cancel") {
editingCancelled.call(element);
event.preventDefault();
event.stopPropagation();
} else if (result && result.indexOf("move-") === 0) {
moveDirection = result.substring(5);
if (event.keyIdentifier !== "U+0009")
blurEventListener();
}
}
function pasteEventListener(event)
{
var result = pasteCallback(event);
handleEditingResult(result, event);
}
function keyDownEventListener(event)
{
var handler = config.customFinishHandler || defaultFinishHandler;
var result = handler(event);
handleEditingResult(result, event);
}
element.addEventListener("blur", blurEventListener, false);
element.addEventListener("keydown", keyDownEventListener, true);
if (pasteCallback)
element.addEventListener("paste", pasteEventListener, true);
WebInspector.currentFocusElement = element;
return {
cancel: editingCancelled.bind(element),
commit: editingCommitted.bind(element)
};
}
WebInspector._toolbarItemClicked = function(event)
{
var toolbarItem = event.currentTarget;
this.currentPanel = toolbarItem.panel;
}
// This table maps MIME types to the Resource.Types which are valid for them.
// The following line:
// "text/html": {0: 1},
// means that text/html is a valid MIME type for resources that have type
// WebInspector.Resource.Type.Document (which has a value of 0).
WebInspector.MIMETypes = {
"text/html": {0: true},
"text/xml": {0: true},
"text/plain": {0: true},
"application/xhtml+xml": {0: true},
"text/css": {1: true},
"text/xsl": {1: true},
"image/jpeg": {2: true},
"image/png": {2: true},
"image/gif": {2: true},
"image/bmp": {2: true},
"image/vnd.microsoft.icon": {2: true},
"image/x-icon": {2: true},
"image/x-xbitmap": {2: true},
"font/ttf": {3: true},
"font/opentype": {3: true},
"application/x-font-type1": {3: true},
"application/x-font-ttf": {3: true},
"application/x-font-woff": {3: true},
"application/x-truetype-font": {3: true},
"text/javascript": {4: true},
"text/ecmascript": {4: true},
"application/javascript": {4: true},
"application/ecmascript": {4: true},
"application/x-javascript": {4: true},
"text/javascript1.1": {4: true},
"text/javascript1.2": {4: true},
"text/javascript1.3": {4: true},
"text/jscript": {4: true},
"text/livescript": {4: true},
}
WebInspector.PanelHistory = function()
{
this._history = [];
this._historyIterator = -1;
}
WebInspector.PanelHistory.prototype = {
canGoBack: function()
{
return this._historyIterator > 0;
},
goBack: function()
{
this._inHistory = true;
WebInspector.currentPanel = WebInspector.panels[this._history[--this._historyIterator]];
delete this._inHistory;
},
canGoForward: function()
{
return this._historyIterator < this._history.length - 1;
},
goForward: function()
{
this._inHistory = true;
WebInspector.currentPanel = WebInspector.panels[this._history[++this._historyIterator]];
delete this._inHistory;
},
setPanel: function(panelName)
{
if (this._inHistory)
return;
this._history.splice(this._historyIterator + 1, this._history.length - this._historyIterator - 1);
if (!this._history.length || this._history[this._history.length - 1] !== panelName)
this._history.push(panelName);
this._historyIterator = this._history.length - 1;
}
}