1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_WEBUI_WEB_UI_IMPL_H_ 6 #define CONTENT_BROWSER_WEBUI_WEB_UI_IMPL_H_ 7 8 #include <map> 9 10 #include "base/compiler_specific.h" 11 #include "base/memory/scoped_vector.h" 12 #include "base/memory/weak_ptr.h" 13 #include "content/public/browser/web_ui.h" 14 #include "ipc/ipc_listener.h" 15 16 namespace content { 17 class RenderViewHost; 18 19 class CONTENT_EXPORT WebUIImpl : public WebUI, 20 public IPC::Listener, 21 public base::SupportsWeakPtr<WebUIImpl> { 22 public: 23 explicit WebUIImpl(WebContents* contents); 24 virtual ~WebUIImpl(); 25 26 // Called by WebContentsImpl when the RenderView is first created. This is 27 // *not* called for every page load because in some cases 28 // RenderFrameHostManager will reuse RenderView instances. 29 void RenderViewCreated(RenderViewHost* render_view_host); 30 31 // WebUI implementation: 32 virtual WebContents* GetWebContents() const OVERRIDE; 33 virtual WebUIController* GetController() const OVERRIDE; 34 virtual void SetController(WebUIController* controller) OVERRIDE; 35 virtual ui::ScaleFactor GetDeviceScaleFactor() const OVERRIDE; 36 virtual const base::string16& GetOverriddenTitle() const OVERRIDE; 37 virtual void OverrideTitle(const base::string16& title) OVERRIDE; 38 virtual PageTransition GetLinkTransitionType() const OVERRIDE; 39 virtual void SetLinkTransitionType(PageTransition type) OVERRIDE; 40 virtual int GetBindings() const OVERRIDE; 41 virtual void SetBindings(int bindings) OVERRIDE; 42 virtual void SetFrameXPath(const std::string& xpath) OVERRIDE; 43 virtual void AddMessageHandler(WebUIMessageHandler* handler) OVERRIDE; 44 typedef base::Callback<void(const base::ListValue*)> MessageCallback; 45 virtual void RegisterMessageCallback( 46 const std::string& message, 47 const MessageCallback& callback) OVERRIDE; 48 virtual void ProcessWebUIMessage(const GURL& source_url, 49 const std::string& message, 50 const base::ListValue& args) OVERRIDE; 51 virtual void CallJavascriptFunction( 52 const std::string& function_name) OVERRIDE; 53 virtual void CallJavascriptFunction(const std::string& function_name, 54 const base::Value& arg) OVERRIDE; 55 virtual void CallJavascriptFunction(const std::string& function_name, 56 const base::Value& arg1, 57 const base::Value& arg2) OVERRIDE; 58 virtual void CallJavascriptFunction(const std::string& function_name, 59 const base::Value& arg1, 60 const base::Value& arg2, 61 const base::Value& arg3) OVERRIDE; 62 virtual void CallJavascriptFunction(const std::string& function_name, 63 const base::Value& arg1, 64 const base::Value& arg2, 65 const base::Value& arg3, 66 const base::Value& arg4) OVERRIDE; 67 virtual void CallJavascriptFunction( 68 const std::string& function_name, 69 const std::vector<const base::Value*>& args) OVERRIDE; 70 71 // IPC::Listener implementation: 72 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 73 74 private: 75 // IPC message handling. 76 void OnWebUISend(const GURL& source_url, 77 const std::string& message, 78 const base::ListValue& args); 79 80 // Execute a string of raw Javascript on the page. 81 void ExecuteJavascript(const base::string16& javascript); 82 83 // A map of message name -> message handling callback. 84 typedef std::map<std::string, MessageCallback> MessageCallbackMap; 85 MessageCallbackMap message_callbacks_; 86 87 // Options that may be overridden by individual Web UI implementations. The 88 // bool options default to false. See the public getters for more information. 89 base::string16 overridden_title_; // Defaults to empty string. 90 PageTransition link_transition_type_; // Defaults to LINK. 91 int bindings_; // The bindings from BindingsPolicy that should be enabled for 92 // this page. 93 94 // The WebUIMessageHandlers we own. 95 ScopedVector<WebUIMessageHandler> handlers_; 96 97 // Non-owning pointer to the WebContents this WebUI is associated with. 98 WebContents* web_contents_; 99 100 // The path for the iframe this WebUI is embedded in (empty if not in an 101 // iframe). 102 std::string frame_xpath_; 103 104 scoped_ptr<WebUIController> controller_; 105 106 DISALLOW_COPY_AND_ASSIGN(WebUIImpl); 107 }; 108 109 } // namespace content 110 111 #endif // CONTENT_BROWSER_WEBUI_WEB_UI_IMPL_H_ 112
