Improve Clipboard support, add Clipboard.onUpdate (resolve #925)

project/src/ExternalInterface.cpp

@@ -22,6 +22,7 @@
 #include <media/AudioBuffer.h>
 #include <system/CFFIPointer.h>
 #include <system/Clipboard.h>
+#include <system/ClipboardEvent.h>
 #include <system/JNI.h>
 #include <system/Locale.h>
 #include <system/SensorEvent.h>
@@ -272,6 +273,14 @@ namespace lime {
 	}
 	
 	
+	void lime_clipboard_event_manager_register (value callback, value eventObject) {
+		
+		ClipboardEvent::callback = new AutoGCRoot (callback);
+		ClipboardEvent::eventObject = new AutoGCRoot (eventObject);
+		
+	}
+	
+	
 	value lime_clipboard_get_text () {
 		
 		if (Clipboard::HasText ()) {
@@ -1794,6 +1803,7 @@ namespace lime {
 	DEFINE_PRIME2 (lime_bytes_read_file);
 	DEFINE_PRIME1 (lime_cffi_get_native_pointer);
 	DEFINE_PRIME1 (lime_cffi_set_finalizer);
+	DEFINE_PRIME2v (lime_clipboard_event_manager_register);
 	DEFINE_PRIME0 (lime_clipboard_get_text);
 	DEFINE_PRIME1v (lime_clipboard_set_text);
 	DEFINE_PRIME2 (lime_data_pointer_offset);

project/src/backend/sdl/SDLApplication.cpp

@@ -48,6 +48,7 @@ namespace lime {
 		nextUpdate = 0;
 		
 		ApplicationEvent applicationEvent;
+		ClipboardEvent clipboardEvent;
 		DropEvent dropEvent;
 		GamepadEvent gamepadEvent;
 		JoystickEvent joystickEvent;
@@ -156,6 +157,11 @@ namespace lime {
 				inBackground = false;
 				break;
 			
+			case SDL_CLIPBOARDUPDATE:
+				
+				ProcessClipboardEvent (event);
+				break;
+			
 			case SDL_CONTROLLERAXISMOTION:
 			case SDL_CONTROLLERBUTTONDOWN:
 			case SDL_CONTROLLERBUTTONUP:
@@ -316,6 +322,19 @@ namespace lime {
 	}
 	
 	
+	void SDLApplication::ProcessClipboardEvent (SDL_Event* event) {
+		
+		if (ClipboardEvent::callback) {
+			
+			clipboardEvent.type = CLIPBOARD_UPDATE;
+			
+			ClipboardEvent::Dispatch (&clipboardEvent);
+			
+		}
+		
+	}
+	
+	
 	void SDLApplication::ProcessDropEvent (SDL_Event* event) {
 		
 		if (DropEvent::callback) {

project/src/backend/sdl/SDLApplication.h

@@ -6,6 +6,7 @@
 #include <app/Application.h>
 #include <app/ApplicationEvent.h>
 #include <graphics/RenderEvent.h>
+#include <system/ClipboardEvent.h>
 #include <system/SensorEvent.h>
 #include <ui/DropEvent.h>
 #include <ui/GamepadEvent.h>
@@ -39,6 +40,7 @@ namespace lime {
 		private:
 			
 			void HandleEvent (SDL_Event* event);
+			void ProcessClipboardEvent (SDL_Event* event);
 			void ProcessDropEvent (SDL_Event* event);
 			void ProcessGamepadEvent (SDL_Event* event);
 			void ProcessJoystickEvent (SDL_Event* event);
@@ -57,6 +59,7 @@ namespace lime {
 			
 			bool active;
 			ApplicationEvent applicationEvent;
+			ClipboardEvent clipboardEvent;
 			Uint32 currentUpdate;
 			double framePeriod;
 			DropEvent dropEvent;

project/src/system/ClipboardEvent.cpp

@@ -0,0 +1,44 @@
+#include <hx/CFFI.h>
+#include <system/ClipboardEvent.h>
+
+
+namespace lime {
+	
+	
+	AutoGCRoot* ClipboardEvent::callback = 0;
+	AutoGCRoot* ClipboardEvent::eventObject = 0;
+	
+	static int id_type;
+	static bool init = false;
+	
+	
+	ClipboardEvent::ClipboardEvent () {
+		
+		type = CLIPBOARD_UPDATE;
+		
+	}
+	
+	
+	void ClipboardEvent::Dispatch (ClipboardEvent* event) {
+		
+		if (ClipboardEvent::callback) {
+			
+			if (!init) {
+				
+				id_type = val_id ("type");
+				init = true;
+				
+			}
+			
+			value object = (ClipboardEvent::eventObject ? ClipboardEvent::eventObject->get () : alloc_empty_object ());
+			
+			alloc_field (object, id_type, alloc_int (event->type));
+			
+			val_call0 (ClipboardEvent::callback->get ());
+			
+		}
+		
+	}
+	
+	
+}