dialog.as
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dialog.as
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	import elements.IGuiElement;
	import dialogs.IDialog;

	IDialog@[] dialogs;

	//Add and remove dialogs from the global
	//list accordingly
	void addDialog(IDialog@ dlg) {
	dlg.updatePosition();
	dialogs.insertLast(dlg);
	dlg.focus();
	}

	void closeDialog(IDialog@ dlg) {
	int ind = dialogs.find(dlg);
	if(ind >= 0)
	dialogs.removeAt(ind);
	if(!dlg.closed)
	dlg.close();
	}

	//An element can close all dialogs bound to it
	void closeDialogs(IGuiElement@ elem) {
	uint cnt = dialogs.length(), offset = 0;
	for(uint i = 0; i < cnt; ++i) {
	if(dialogs[i].bound is elem)
	++offset;
	else if(offset > 0)
	@dialogs[i - offset] = dialogs[i];
	}
	if(offset > 0)
	dialogs.resize(cnt - offset);
	}

	//Tick function checks for closed dialogs to clean
	//up every once in a while
	double timer = 0.0;
	void tick(double time) {
	if(timer >= 1.0) {
	timer = 0.0;

	uint cnt = dialogs.length(), offset = 0;
	for(uint i = 0; i < cnt; ++i) {
	if(dialogs[i].closed)
	++offset;
	else if(offset > 0)
	@dialogs[i - offset] = dialogs[i];
	}
	if(offset > 0)
	dialogs.resize(cnt - offset);
	}
	else
	timer += time;
	}