1 // Copyright (c) 2011 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 UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_WRAPPER_H_ 6 #define UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_WRAPPER_H_ 7 8 #include "ui/gfx/native_widget_types.h" 9 #include "ui/views/views_export.h" 10 11 namespace views { 12 13 class NativeViewHost; 14 15 // An interface that implemented by an object that wraps a gfx::NativeView on 16 // a specific platform, used to perform platform specific operations on that 17 // native view when attached, detached, moved and sized. 18 class VIEWS_EXPORT NativeViewHostWrapper { 19 public: 20 virtual ~NativeViewHostWrapper() {} 21 22 // Called at the end of NativeViewHost::Attach, allowing the wrapper to 23 // perform platform-specific operations that need to occur to complete 24 // attaching the gfx::NativeView. 25 virtual void AttachNativeView() = 0; 26 27 // Called before the attached gfx::NativeView is detached from the 28 // NativeViewHost, allowing the wrapper to perform platform-specific 29 // cleanup. |destroyed| is true if the native view is detached 30 // because it's being destroyed, or false otherwise. 31 virtual void NativeViewDetaching(bool destroyed) = 0; 32 33 // Called when our associated NativeViewHost is added to a View hierarchy 34 // rooted at a valid Widget. 35 virtual void AddedToWidget() = 0; 36 37 // Called when our associated NativeViewHost is removed from a View hierarchy 38 // rooted at a valid Widget. 39 virtual void RemovedFromWidget() = 0; 40 41 // Installs a clip on the gfx::NativeView. These values are in the coordinate 42 // space of the Widget, so if this method is called from ShowWidget 43 // then the values need to be translated. 44 virtual void InstallClip(int x, int y, int w, int h) = 0; 45 46 // Whether or not a clip has been installed on the wrapped gfx::NativeView. 47 virtual bool HasInstalledClip() = 0; 48 49 // Removes the clip installed on the gfx::NativeView by way of InstallClip. A 50 // following call to ShowWidget should occur after calling this method to 51 // position the gfx::NativeView correctly, since the clipping process may have 52 // adjusted its position. 53 virtual void UninstallClip() = 0; 54 55 // Shows the gfx::NativeView at the specified position (relative to the parent 56 // native view). 57 virtual void ShowWidget(int x, int y, int w, int h) = 0; 58 59 // Hides the gfx::NativeView. NOTE: this may be invoked when the native view 60 // is already hidden. 61 virtual void HideWidget() = 0; 62 63 // Sets focus to the gfx::NativeView. 64 virtual void SetFocus() = 0; 65 66 // Return the native view accessible corresponding to the wrapped native 67 // view. 68 virtual gfx::NativeViewAccessible GetNativeViewAccessible() = 0; 69 70 // Returns the native cursor corresponding to the point (x, y) 71 // in the native view. 72 virtual gfx::NativeCursor GetCursor(int x, int y) = 0; 73 74 // Creates a platform-specific instance of an object implementing this 75 // interface. 76 static NativeViewHostWrapper* CreateWrapper(NativeViewHost* host); 77 }; 78 79 } // namespace views 80 81 #endif // UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_WRAPPER_H_ 82
