libui/haiku/button.cpp

// 18 november 2015
#include "uipriv_haiku.hpp"

struct uiButton {
	uiHaikuControl c;
	BButton *button;
	void (*onClicked)(uiButton *, void *);
	void *onClickedData;
};

uiHaikuDefineControl(
	uiButton,								// type name
	uiButtonType,							// type function
	button								// handle
)

#define mButtonClicked 0x4E754E75

static void onClicked(BMessage *msg)
{
	void *bb;
	uiButton *b;

	// TODO error check
	msg->FindPointer(mControlField, &bb);
	b = uiButton(bb);
	(*(b->onClicked))(b, b->onClickedData);
}

static void defaultOnClicked(uiButton *b, void *data)
{
	// do nothing
}

char *uiButtonText(uiButton *b)
{
	return uiHaikuStrdupText(b->button->Label());
}

void uiButtonSetText(uiButton *b, const char *text)
{
	b->button->SetLabel(text);
}

void uiButtonOnClicked(uiButton *b, void (*f)(uiButton *b, void *data), void *data)
{
	b->onClicked = f;
	b->onClickedData = data;
}

uiButton *uiNewButton(const char *text)
{
	uiButton *b;
	BMessage *msg;

	b = (uiButton *) uiNewControl(uiButtonType());

	uiHaikuRegisterEventHandler(mButtonClicked, onClicked);
	msg = new BMessage(mButtonClicked);
	msg->AddPointer(mControlField, b);

	b->button = new BButton(text, msg);

	uiButtonOnClicked(b, defaultOnClicked, NULL);

	uiHaikuFinishNewControl(b, uiButton);

	return b;
}