1 // Copyright (c) 2010 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 PPAPI_CPP_DEV_WIDGET_CLIENT_DEV_H_ 6 #define PPAPI_CPP_DEV_WIDGET_CLIENT_DEV_H_ 7 8 #include "ppapi/c/pp_stdint.h" 9 #include "ppapi/cpp/instance_handle.h" 10 11 namespace pp { 12 13 class Instance; 14 class Rect; 15 class Scrollbar_Dev; 16 class Widget_Dev; 17 18 // This class provides a C++ interface for callbacks related to widgets. You 19 // would normally use multiple inheritance to derive from this class in your 20 // instance. 21 class WidgetClient_Dev { 22 public: 23 explicit WidgetClient_Dev(Instance* instance); 24 virtual ~WidgetClient_Dev(); 25 26 /** 27 * Notification that the given widget should be repainted. This is the 28 * implementation for PPP_Widget_Dev. 29 */ 30 virtual void InvalidateWidget(Widget_Dev widget, const Rect& dirty_rect) = 0; 31 32 /** 33 * Notification that the given scrollbar should change value. This is the 34 * implementation for PPP_Scrollbar_Dev. 35 */ 36 virtual void ScrollbarValueChanged(Scrollbar_Dev scrollbar, 37 uint32_t value) = 0; 38 39 /** 40 * Notification that the given scrollbar's overlay type has changed. This is 41 * the implementation for PPP_Scrollbar_Dev. 42 */ 43 virtual void ScrollbarOverlayChanged(Scrollbar_Dev scrollbar, 44 bool type) = 0; 45 46 private: 47 InstanceHandle associated_instance_; 48 }; 49 50 } // namespace pp 51 52 #endif // PPAPI_CPP_DEV_WIDGET_CLIENT_DEV_H_ 53