First pass on intents options UI.

chrome/browser/ui/webui/options/intents_settings_handler.h

+// Copyright (c) 2011 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.
+
+#ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_INTENTS_SETTINGS_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_OPTIONS_INTENTS_SETTINGS_HANDLER_H_
+#pragma once
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/intents/intents_model.h"
+#include "chrome/browser/ui/webui/options/options_ui.h"
+
+class WebDataService;
+class WebIntentsRegistry;
+
+// Manage setting up the backing data for the web intents options page.
+class IntentsSettingsHandler : public OptionsPageUIHandler,
+                               public IntentsModel::Observer {
+ public:
+  IntentsSettingsHandler();
+  virtual ~IntentsSettingsHandler();
+
+  // OptionsPageUIHandler implementation.
+  virtual void GetLocalizedValues(base::DictionaryValue* localized_strings);
+  virtual void RegisterMessages();
+
+  // IntentsModel::Observer implementation.
+  virtual void TreeNodesAdded(ui::TreeModel* model,
+                              ui::TreeModelNode* parent,
+                              int start,
+                              int count) OVERRIDE;
+  virtual void TreeNodesRemoved(ui::TreeModel* model,
+                                ui::TreeModelNode* parent,
+                                int start,
+                                int count) OVERRIDE;
+  virtual void TreeNodeChanged(ui::TreeModel* model,
+                               ui::TreeModelNode* node) OVERRIDE {}
+  virtual void TreeModelBeginBatch(IntentsModel* model) OVERRIDE;
+  virtual void TreeModelEndBatch(IntentsModel* model) OVERRIDE;
+
+ private:
+  // Creates the IntentsModel if neccessary.
+  void EnsureIntentsModelCreated();
+
+  // Updates search filter for cookies tree model.
+  void UpdateSearchResults(const base::ListValue* args);
+
+  // Remove all sites data.
+  void RemoveAll(const base::ListValue* args);
+
+  // Remove selected sites data.
+  void RemoveIntent(const base::ListValue* args);
+
+  // Helper functions for removals.
+  void RemoveOrigin(IntentsTreeNode* node);
+  void RemoveService(ServiceTreeNode* snode);
+
+  // Trigger for SendChildren to load the JS model.
+  void LoadChildren(const base::ListValue* args);
+
+  // Get children nodes data and pass it to 'IntentsView.loadChildren' to
+  // update the WebUI.
+  void SendChildren(IntentsTreeNode* parent);
+
+  scoped_refptr<WebDataService> web_data_service_;
+  WebIntentsRegistry* web_intents_registry_;  // Weak pointer.
+
+  // Backing data model for the intents list.
+  scoped_ptr<IntentsModel> intents_tree_model_;
+
+  // Flag to indicate whether there is a batch update in progress.
+  bool batch_update_;
+
+  DISALLOW_COPY_AND_ASSIGN(IntentsSettingsHandler);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_INTENTS_SETTINGS_HANDLER_H_