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// Dies ist die Haupt-DLL.

#include "stdafx.h"
#include <stdio.h>

#include "toolkit.h"

#using "UIcore.dll"

static UIcallback startup_func;
void              *startup_data;
static UIcallback open_func;
void              *open_data;
static UIcallback exit_func;
void              *exit_data;

public ref class AppCallbacks : public UI::IApplicationCallbacks {
public:
	UIcallback startupFunc = NULL;
	void       *startupData = NULL;
	UIcallback openFunc = NULL;
	void       *openData = NULL;
	UIcallback exitFunc = NULL;
	void       *exitData = NULL;

	virtual void __clrcall OnStartup() {
		if (startupFunc) {
			startupFunc(NULL, startupData);
		}
	}
	virtual void __clrcall OnOpen() {
		if (openFunc) {
			openFunc(NULL, openData);
		}
	}
	virtual void __clrcall OnExit() {
		if (exitFunc) {
			exitFunc(NULL, exitData);
		}
	}
};


void* ObjectToPtr(Object ^obj) {
	GCHandle handle = GCHandle::Alloc(obj);
	IntPtr pointer = GCHandle::ToIntPtr(handle);
	return pointer.ToPointer();
}

Object^ PtrToObject(void *ptr) {
	GCHandle h = GCHandle::FromIntPtr(IntPtr(ptr));
	Object^ object = h.Target;
	//h.Free();
	return object;
}

// EventWrapper

ObjEventWrapper::ObjEventWrapper(UIcallback callback, void *eventdata) {
	this->callback = callback;
	this->eventdata = eventdata;
	action = gcnew Action<IntPtr>(this, &ObjEventWrapper::Callback);
}

Action<IntPtr>^ ObjEventWrapper::GetAction() {
	return action;
}

void ObjEventWrapper::Callback(IntPtr uiobj) {
	if (callback) {
		callback(uiobj.ToPointer(), eventdata);
	}
}


EventWrapper::EventWrapper(UIcallback callback, void *eventdata) {
	this->callback = callback;
	this->eventdata = eventdata;
}

void EventWrapper::Callback(Object ^sender, RoutedEventArgs ^e) {
	if (callback) {
		callback(NULL, eventdata);
	}
}



UI_EXPORT void __stdcall UIinit(char *appname) {
	UI::Application ^app = UI::Application::GetInstance();
	app->Name = gcnew String(appname);
}

UI_EXPORT void __stdcall UIonstartup(UIcallback f, void *userdata) {
	startup_func = f;
	startup_data = userdata;
}

UI_EXPORT void __stdcall UIonopen(UIcallback f, void *userdata) {
	open_func = f;
	open_data = userdata;
}

UI_EXPORT void __stdcall UIonexit(UIcallback f, void *userdata) {
	exit_func = f;
	exit_data = userdata;
}

UI_EXPORT void __stdcall UImain() {
	AppCallbacks ^ac = gcnew AppCallbacks();
	ac->startupFunc = startup_func;
	ac->startupData = startup_data;
	ac->openFunc = open_func;
	ac->openData = open_data;
	ac->exitFunc = exit_func;
	ac->exitData = exit_data;
	
	UI::Application ^app = UI::Application::GetInstance();
	app->callbacks = ac;

	Thread ^thread = app->Start();
	thread->Join();
}

UI_EXPORT void __stdcall UIshow(gcroot<UI::MainWindow^> *window) {
	(*window)->ShowWindow();
}