Make DevTools client survive 'refresh' of the inspectable tab.

webkit/glue/devtools/js/devtools.js

 // Copyright (c) 2009 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.
 
 /**
  * @fileoverview Tools is a main class that wires all components of the 
  * DevTools frontend together. It is also responsible for overriding existing
  * WebInspector functionality while it is getting upstreamed into WebCore.
  */
 goog.provide('devtools.Tools');
 
 goog.require('devtools.DomAgent');
 goog.require('devtools.NetAgent');
 
 devtools.ToolsAgent = function() {
   RemoteToolsAgent.UpdateFocusedNode =
       goog.bind(this.updateFocusedNode, this);
+  RemoteToolsAgent.FrameNavigate =
+      goog.bind(this.frameNavigate, this);
+  this.domAgent_ = new devtools.DomAgent();
+  this.netAgent_ = new devtools.NetAgent();
+  this.reset();
 };
 
 
-// ToolsAgent implementation.
-devtools.ToolsAgent.prototype.updateFocusedNode = function(node_id) {
-  var node = domAgent.getNodeForId(node_id);
+/**
+ * Rests tools agent to its initial state.
+ */
+devtools.ToolsAgent.prototype.reset = function() {
+  this.setEnabled(true);
+  this.domAgent_.reset();
+  this.domAgent_.getDocumentElementAsync();
+};
+
+
+/**
+ * DomAgent accessor.
+ * @return {devtools.DomAgent} Dom agent instance.
+ */
+devtools.ToolsAgent.prototype.getDomAgent = function() {
+  return this.domAgent_;
+};
+
+
+/**
+ * NetAgent accessor.
+ * @return {devtools.NetAgent} Net agent instance.
+ */
+devtools.ToolsAgent.prototype.getNetAgent = function() {
+  return this.netAgent_;
+};
+
+
+/**
+ * @see tools_agent.h
+ */
+devtools.ToolsAgent.prototype.updateFocusedNode = function(nodeId) {
+  var node = this.domAgent_.getNodeForId(nodeId);
   WebInspector.updateFocusedNode(node);
 };
 
 
-devtools.ToolsAgent.prototype.setDomAgentEnabled = function(enabled) {
-  RemoteToolsAgent.SetDomAgentEnabled(enabled);
+/**
+ * @see tools_agent.h
+ */
+devtools.ToolsAgent.prototype.frameNavigate = function(url, topLevel) {
+  this.reset();
+  WebInspector.reset();
 };
 
 
-devtools.ToolsAgent.prototype.setNetAgentEnabled = function(enabled) {
-  RemoteToolsAgent.SetNetAgentEnabled(enabled);
+/**
+ * @see tools_agent.h
+ */
+devtools.ToolsAgent.prototype.setEnabled = function(enabled) {
+  RemoteToolsAgent.SetEnabled(enabled);
+};
+
+
+
+/**
+ * Evaluates js expression.
+ * @param {string} expr
+ */
+devtools.ToolsAgent.prototype.evaluate = function(expr) {
+  RemoteToolsAgent.evaluate(expr);
 };
 
 
 // Frontend global objects.
-var domAgent;
-var netAgent;
-var toolsAgent;
+var devtools.tools;
 
 var context = {};  // Used by WebCore's inspector routines.
 
-// Overrides for existing WebInspector methods.
+///////////////////////////////////////////////////////////////////////////////
+// Here and below are overrides to existing WebInspector methods only.
 // TODO(pfeldman): Patch WebCore and upstream changes.
 var oldLoaded = WebInspector.loaded;
 WebInspector.loaded = function() {
-  domAgent = new devtools.DomAgent();
-  netAgent = new devtools.NetAgent();
-  toolsAgent = new devtools.ToolsAgent();
+  devtools.tools = new devtools.ToolsAgent();
 
   Preferences.ignoreWhitespace = false;
-  toolsAgent.setDomAgentEnabled(true);
-  toolsAgent.setNetAgentEnabled(true);
   oldLoaded.call(this);
-  domAgent.getDocumentElementAsync();
+
+  DevToolsHost.loaded();
 };
 
 
 var webkitUpdateChildren =
     WebInspector.ElementsTreeElement.prototype.updateChildren;
 
+
 WebInspector.ElementsTreeElement.prototype.updateChildren = function() {
   var self = this;
-  domAgent.getChildNodesAsync(this.representedObject.id, function() {
-      webkitUpdateChildren.call(self);
-  });
+  devtools.tools.getDomAgent().getChildNodesAsync(this.representedObject.id, 
+      function() {
+        webkitUpdateChildren.call(self);
+      });
 };
 
+
 WebInspector.ElementsPanel.prototype.performSearch = function(query) {
   this.searchCanceled();
   var self = this;
-  domAgent.performSearch(query, function(node) {
+  devtools.tools.getDomAgent().performSearch(query, function(node) {
     var treeElement = self.treeOutline.findTreeElement(node);
     if (treeElement)
       treeElement.highlighted = true;
   });
 };
 
 
 WebInspector.ElementsPanel.prototype.searchCanceled = function() {
   var self = this;
-  domAgent.searchCanceled(function(node) {
+  devtools.tools.getDomAgent().searchCanceled(function(node) {
     var treeElement = self.treeOutline.findTreeElement(node);
     if (treeElement)
       treeElement.highlighted = false;
   });
 };
 
 
 WebInspector.ElementsPanel.prototype.jumpToNextSearchResult = function() {
 };
 
 
 WebInspector.ElementsPanel.prototype.jumpToPreviousSearchResult = function() {
 };
+
+
+WebInspector.Console.prototype._evalInInspectedWindow = function(expr) {
+  return devtools.tools.evaluate(expr);
+};