1 // Copyright 2012 Google Inc. 2 // Author: thorcarpenter (at) google.com (Thor Carpenter) 3 // 4 // Defines variant class ScreencastId that combines WindowId and DesktopId. 5 6 #ifndef TALK_MEDIA_BASE_SCREENCASTID_H_ 7 #define TALK_MEDIA_BASE_SCREENCASTID_H_ 8 9 #include <string> 10 #include <vector> 11 12 #include "webrtc/base/window.h" 13 #include "webrtc/base/windowpicker.h" 14 15 namespace cricket { 16 17 class ScreencastId; 18 typedef std::vector<ScreencastId> ScreencastIdList; 19 20 // Used for identifying a window or desktop to be screencast. 21 class ScreencastId { 22 public: 23 enum Type { INVALID, WINDOW, DESKTOP }; 24 25 // Default constructor indicates invalid ScreencastId. 26 ScreencastId() : type_(INVALID) {} 27 explicit ScreencastId(const rtc::WindowId& id) 28 : type_(WINDOW), window_(id) { 29 } 30 explicit ScreencastId(const rtc::DesktopId& id) 31 : type_(DESKTOP), desktop_(id) { 32 } 33 34 Type type() const { return type_; } 35 const rtc::WindowId& window() const { return window_; } 36 const rtc::DesktopId& desktop() const { return desktop_; } 37 38 // Title is an optional parameter. 39 const std::string& title() const { return title_; } 40 void set_title(const std::string& desc) { title_ = desc; } 41 42 bool IsValid() const { 43 if (type_ == INVALID) { 44 return false; 45 } else if (type_ == WINDOW) { 46 return window_.IsValid(); 47 } else { 48 return desktop_.IsValid(); 49 } 50 } 51 bool IsWindow() const { return type_ == WINDOW; } 52 bool IsDesktop() const { return type_ == DESKTOP; } 53 bool EqualsId(const ScreencastId& other) const { 54 if (type_ != other.type_) { 55 return false; 56 } 57 if (type_ == INVALID) { 58 return true; 59 } else if (type_ == WINDOW) { 60 return window_.Equals(other.window()); 61 } 62 return desktop_.Equals(other.desktop()); 63 } 64 65 // T is assumed to be WindowDescription or DesktopDescription. 66 template<class T> 67 static cricket::ScreencastIdList Convert(const std::vector<T>& list) { 68 ScreencastIdList screencast_list; 69 screencast_list.reserve(list.size()); 70 for (typename std::vector<T>::const_iterator it = list.begin(); 71 it != list.end(); ++it) { 72 ScreencastId id(it->id()); 73 id.set_title(it->title()); 74 screencast_list.push_back(id); 75 } 76 return screencast_list; 77 } 78 79 private: 80 Type type_; 81 rtc::WindowId window_; 82 rtc::DesktopId desktop_; 83 std::string title_; // Optional. 84 }; 85 86 } // namespace cricket 87 88 #endif // TALK_MEDIA_BASE_SCREENCASTID_H_ 89