Difference between revisions of "Dialog System"

#ifndef _DialogSystemDemo_h_
#define _DialogSystemDemo_h_
 
#include "CEGuiSample.h"
#include "CEGUI.h"
#include "DemoUtils.h"
#include "DialogSystem.h"
 
class SimpleWindow : public DialogSystem
{
public:
	void initWindow()
	{
		// Initialise the window
		using namespace CEGUI;
 
		// Initialise the windowing system
		DialogSystem::initialise("winSimpleWindow",	// The handle of this window
					false);			// Initially invisible
								// A modeless window does not have a parent
 
		// Subscribe to widget events
		// Note that the "close" button is set to behave as an "ok" button
		DialogSystem::bindEvent( "Toolbar_btnSimpleWindow",	PushButton::EventClicked, DialogSystem::open);
		DialogSystem::bindEvent( "SimpleWindow_btnClose",	PushButton::EventClicked, DialogSystem::ok);
 
		// Subscribe to window events
		DialogSystem::bindEvent("winSimpleWindow", FrameWindow::EventCloseClicked,	DialogSystem::cancel); // The 'X' button was clicked
		DialogSystem::bindEvent("winSimpleWindow", FrameWindow::EventKeyDown,		DialogSystem::escape); // The 'escape' key was pressed
	}
protected:
	bool doLoad()
	{
		// Handle the load action by placing data into widgets
		CEGUI::WindowManager::getSingleton().getWindow("SimpleWindow_edtValue")->setText(dataString);
		return DialogSystem::doLoad(); 
	}
	bool doSave()
	{
		// Handle the save action by moving widget data into variables
		dataString = CEGUI::WindowManager::getSingleton().getWindow("SimpleWindow_edtValue")->getText();
		return DialogSystem::doSave(); 
	}
private:
	CEGUI::String dataString; // Variable associated with the Editbox
};
 
//////////////////////////////////////////////
 
class SimpleDialog : public DialogSystem
{
public:
	void initWindow()
	{
		// Initialise the dialog
		using namespace CEGUI;
		WindowManager& winMgr = WindowManager::getSingleton();
 
		// Initialise the windowing system
		DialogSystem::initialise("dlgSimpleDialog",	// The handle of this window
					false,			// Initially invisible
						"winToolbar");	// The handle of its parent, making it a modal dialog
 
		// Subscribe to widget events
		DialogSystem::bindEvent( "Toolbar_btnSimpleDialog",	PushButton::EventClicked,	DialogSystem::open);
		DialogSystem::bindEvent( "SimpleDialog_btnOk",		PushButton::EventClicked,	DialogSystem::ok);
		DialogSystem::bindEvent( "SimpleDialog_btnCancel",	PushButton::EventClicked,	DialogSystem::cancel);
		DialogSystem::bindEvent( "SimpleDialog_btnApply",	PushButton::EventClicked,	DialogSystem::apply);
 
		// These events trigger a 'modified' event, activating the 'apply' button
		DialogSystem::bindEvent( "SimpleDialog_edtValue",	Editbox::EventTextChanged,	DialogSystem::modified);
 
		// Subscribe to window events
		// Pressing the 'X' button will behave as a cancel
		DialogSystem::bindEvent( "dlgSimpleDialog", FrameWindow::EventCloseClicked,	DialogSystem::cancel); // The 'X' button was clicked
		DialogSystem::bindEvent( "dlgSimpleDialog", FrameWindow::EventKeyDown,		DialogSystem::escape); // The 'escape' key was pressed
	}
protected:
	bool doLoad()
	{
		// Handle the load action by placing data into widgets
		CEGUI::WindowManager::getSingleton().getWindow("SimpleDialog_edtValue")->setText(dataString);
		return DialogSystem::doLoad(); 
	}
	bool doSave()
	{
		// Handle the save action by moving widget data into variables
		dataString = CEGUI::WindowManager::getSingleton().getWindow("SimpleDialog_edtValue")->getText();
		return DialogSystem::doSave(); 
	}
private:
	CEGUI::String dataString;
};
 
//////////////////////////////////////////
 
class DemoSample : public CEGuiSample
{
public:
    bool initialiseSample()
	{
		using namespace CEGUI;
		try
		{
			// Retrieve the window manager
			WindowManager& winMgr = WindowManager::getSingleton();
 
			// Load the TaharezLook scheme and set up the default mouse cursor and font
			SchemeManager::getSingleton().loadScheme("TaharezLook.scheme");
			System::getSingleton().setDefaultMouseCursor("TaharezLook", "MouseArrow");
			if(!FontManager::getSingleton().isFontPresent("Commonwealth-10"))
				FontManager::getSingleton().createFont("Commonwealth-10.font");
 
			// Set the GUI Sheet
			Window* sheet = winMgr.createWindow("DefaultWindow", "root_wnd");
			System::getSingleton().setGUISheet(sheet);
 
			// Load a layout
			Window* guiLayout = winMgr.loadWindowLayout("DialogSystem.layout");
			sheet->addChildWindow(guiLayout);
 
 
			// Initialise the Simple Window and the Simple Dialog
			simpleWindow.initWindow();
			simpleDialog.initWindow();
		}
		catch(Exception &e)
		{
			ErrorMessage(e.getMessage().c_str(), "Error initializing the demo");
		}
 
		return true;
	}
 
    void cleanupSample(void)
	{
	}
private:
	SimpleWindow simpleWindow;
	SimpleDialog simpleDialog;
};
 
#endif // _DialogSystemDemo_h_

#ifndef _DialogSystem_h_
#define _DialogSystem_h_
 
#include "CEGUI.h"
#include "vector"
 
class DialogSystem
{
public:
	DialogSystem();
	enum DialogSystemEvents { open, ok, cancel, escape, apply, modified };
	bool isModified(); // Return whether data within the window is modified
 
	// Actions
	virtual bool doOpen(); // Open the window
	virtual bool doLoad(); // Assign the data into the widgets
	virtual bool doSave(); // Assign the widgets into the data
	virtual bool doClose(); // Close the window
	void initialise(const CEGUI::String& window, bool visible, const CEGUI::String& parent = ""); // Initialise the window system
	void bindEvent(const CEGUI::String& widget, const CEGUI::String& event, DialogSystem::DialogSystemEvents action); // Subscribe to window events
private:
	// Events
	bool onOpen(const CEGUI::EventArgs& e); // Open the window
	bool onOk(const CEGUI::EventArgs& e); // Save the data and close the window
	bool onCancel(const CEGUI::EventArgs& e); // Close the window
	bool onEscape(const CEGUI::EventArgs& e); // Close the window
	bool onApply(const CEGUI::EventArgs& e); // Save the data
	bool onModified(const CEGUI::EventArgs& e); // A widget in the window has been modified
 
	CEGUI::String m_parent; // Handle to the parent
	CEGUI::String m_window; // Handle to the window
	CEGUI::String m_apply;  // Handle of the apply button
	bool m_modal; // Whether the window is modal
};
 
#endif // _DialogSystem_h_

#include "DialogSystem.h"
#include "assert.h"
 
DialogSystem::DialogSystem()
{
	m_modal  = false;
}
 
bool DialogSystem::isModified()
{
	// Return whether data within the window is modified
	assert(!m_apply.empty() && "The isModified() function requires that you specify an \"Apply\" button");
	return !CEGUI::WindowManager::getSingleton().getWindow(m_apply)->isDisabled();
}
 
bool DialogSystem::doOpen()
{
	// Open the window
	assert(!m_window.empty() && "You have forgotten to call initialise()");
	if(m_modal)
	{
		// Displaying a modal window disables its parent
		assert(!m_parent.empty() && "The value of m_modal or m_parent has become corrupted");
		CEGUI::WindowManager::getSingleton().getWindow(m_parent)->setEnabled(false);
	}
 
	// Display the window
	CEGUI::WindowManager::getSingleton().getWindow(m_window)->setVisible(true);
 
	// Load the data into the widgets
	return doLoad();
}
 
bool DialogSystem::doLoad()
{
	// Populate the window widgets with data
	// Note that this can also be used to simulate an undo for every widget
	// present in the window
 
	// Disable the apply button since there are no modifications
	if(!m_apply.empty())
		CEGUI::WindowManager::getSingleton().getWindow(m_apply)->setEnabled(false);
	return true;
}
 
bool DialogSystem::doSave()
{
	// Update the data with the inputs from the widgets
 
	// Disable the apply button since there are no modifications
	if(!m_apply.empty())
		CEGUI::WindowManager::getSingleton().getWindow(m_apply)->setEnabled(false);
 
	return true;
}
 
bool DialogSystem::doClose()
{
	// Close the window
	assert(!m_window.empty() && "You have forgotten to call initialise()");
 
	if(m_modal)
	{
		// Closing a modal window enables its parent
		assert(!m_parent.empty() && "The value of m_modal or m_parent has become corrupted");
		CEGUI::WindowManager::getSingleton().getWindow(m_parent)->setEnabled(true);
	}
 
	CEGUI::WindowManager::getSingleton().getWindow(m_window)->setVisible(false);
	return true;
}
 
void DialogSystem::initialise(const CEGUI::String& window, bool visible, const CEGUI::String& parent)
{
	// Initialise the window system
	// Specifying a parent makes this window modal
	m_window = window;
	CEGUI::WindowManager::getSingleton().getWindow(m_window)->setVisible(visible);
	m_parent = parent;
	m_modal  = !m_parent.empty();
}
 
 
void DialogSystem::bindEvent(const CEGUI::String& widget, const CEGUI::String& widgetEvent, DialogSystemEvents action)
{
	// Subscribe to events
	CEGUI::Window* widgetHandle = CEGUI::WindowManager::getSingleton().getWindow(widget);
	switch(action)
	{
	case open:
		widgetHandle->subscribeEvent(widgetEvent, CEGUI::Event::Subscriber(&DialogSystem::onOpen, this));
		break;
	case ok:
		widgetHandle->subscribeEvent(widgetEvent, CEGUI::Event::Subscriber(&DialogSystem::onOk, this));
		break;
	case cancel:
		widgetHandle->subscribeEvent(widgetEvent, CEGUI::Event::Subscriber(&DialogSystem::onCancel, this));
		break;
	case escape:
		widgetHandle->subscribeEvent(widgetEvent, CEGUI::Event::Subscriber(&DialogSystem::onEscape, this));
		break;
	case apply:
		widgetHandle->subscribeEvent(widgetEvent, CEGUI::Event::Subscriber(&DialogSystem::onApply, this));
		m_apply = widget;
		break;
	case modified:
		if(!m_apply.empty())
			widgetHandle->subscribeEvent(widgetEvent, CEGUI::Event::Subscriber(&DialogSystem::onModified, this));
		break;
	}
}
 
bool DialogSystem::onOpen(const CEGUI::EventArgs& e)
{
	// Open the window
	return doOpen();
}
 
bool DialogSystem::onOk(const CEGUI::EventArgs& e)
{
	// The 'ok' button was pressed
	// Respond by saving the data and closing the window
	return doSave() && doClose();
}
 
bool DialogSystem::onCancel(const CEGUI::EventArgs& e)
{
	// The 'cancel' button was pressed
	// Respond by closing the window without saving the data
	return doClose();
}
 
bool DialogSystem::onEscape(const CEGUI::EventArgs& e)
{
	// The 'escape' key was pressed
	// Respond by closing the dialog without saving the data
	// Note that Win32AppHelper::doDirectInputEvents() intercepts this key
	// This means that the escape key will NOT reach here
    const CEGUI::KeyEventArgs& keyArgs = static_cast<const CEGUI::KeyEventArgs&>(e);
	if(keyArgs.scancode == CEGUI::Key::Escape)
	{
		return doClose();
	}
	else
		return false;
}
 
bool DialogSystem::onApply(const CEGUI::EventArgs& e)
{
	// The 'apply' button was pressed
	// Respond by saving the data without closing the window
	return doSave();
}
 
bool DialogSystem::onModified(const CEGUI::EventArgs& e)
{
	// A widget within the window was modified
	// Respond by enabling the 'apply' button
	CEGUI::WindowManager::getSingleton().getWindow(m_apply)->setEnabled(true);
	return true;
}

#if defined( __WIN32__ ) || defined( _WIN32 )
	#define WIN32_LEAN_AND_MEAN
	#define NOMINMAX
	#include "windows.h"
#endif
 
#include "DialogSystemDemo.h"
 
 
#if defined( __WIN32__ ) || defined( _WIN32 )
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine,int nCmdShow)
#else
int main(int argc, char *argv[])
#endif
{
    DemoSample app;
    return app.run();
}