/* $Id$ */

#include "../stdafx.h"
#include <stdarg.h>
#include "../openttd.h"
#include "../debug.h"
#include "../functions.h"
#include "../map.h"
#include "../player.h"
#include "../window.h"
#include "../gfx.h"
#include "../viewport.h"
#include "../console.h"
#include "../variables.h"
#include "../table/sprites.h"
#include "../genworld.h"
#include "../helpers.hpp"
#include "window_events.hpp"

namespace gui {


void CompositeWidget::AddWidget(Widget *wd)
{
	WidgetId id = wd->GetId();
	std::pair<WidgetIterator, bool> pib = m_widgets.insert(Widgets::value_type(id, wd));
	assert(pib.second);
}

Widget* CompositeWidget::GetWidget(WidgetId id)
{
	WidgetIterator it = m_widgets.find(id);
	return (it != m_widgets.end()) ? (*it).second : NULL;
}

Widget* CompositeWidget::RemoveWidget(WidgetId id)
{
	WidgetIterator it = m_widgets.find(id);
	if (it == m_widgets.end()) return NULL;
	Widget *wd = (*it).second;
	assert(wd->m_container == this);
	wd->m_container = NULL;
	m_widgets.erase(it);
	return wd;
}

/*virtual*/ Widget* CompositeWidget::WidgetFromPt(const Point16 &pt_parent)
{
	Point16 pt_local = pt_parent - TopLeft();
	bool inside_me = m_rect.PtInRect(pt_parent);
	for (WidgetReverseIterator rit = m_widgets.rbegin(); rit != m_widgets.rend(); ++rit) {
		/* get next child */
		Widget *wd_child = (*rit).second;
		/* ask the child recursively */
		Widget *wd = wd_child->WidgetFromPt(pt_local);
		if (wd != NULL) {
			/* if the widget we found is inside me it is what we are searching for */
			if (inside_me) return wd;
			/* the point is outside me. The widget is clipped unless it is on-top widget */
			if (wd->m_dont_clip) return wd;
			/* try next child */
		}
	}
	return inside_me ? this : NULL;
}

/*virtual*/ void CompositeWidget::Close()
{
	/* mark all children as closed in safe way */
	for (WidgetReverseIterator rit_next = m_widgets.rbegin(); rit_next != m_widgets.rend(); ) {
		/* save the iterator (it can be invalidated) and move forward */
		WidgetReverseIterator rit = rit_next++;
		/* get child */
		Widget *wd_child = (*rit).second;
		/* tell him we are closing */
		wd_child->Close();
	}
	/* remove children */
	m_widgets.clear();
	/* mark self as closed */
	super::Close();
}

/*virtual*/ void CompositeWidget::OnCreate(EvtCreate &ev)
{
	/* create standard children */
	CreateWidgets();
	/* if there are any non-client widgets, create them */
	CreateNcWidgets();

	/* notify all children that we are creating */
	for (WidgetIterator it_next = m_widgets.begin(); it_next != m_widgets.end(); ) {
		/* save the iterator (it can be invalidated) and move forward */
		WidgetIterator it = it_next++;
		/* get child */
		Widget *wd_child = (*it).second;
		/* tell him we are creating window */
		wd_child->OnCreate(ev);
	}

	super::OnCreate(ev);
}

/*virtual*/ void CompositeWidget::OnPaint(EvtPaint &ev)
{
	/* paint background */
	DrawBackground(ev);

	/* paint all children */
	for (WidgetIterator it_next = m_widgets.begin(); it_next != m_widgets.end(); ) {
		/* save the iterator (it can be invalidated) and move forward */
		WidgetIterator it = it_next++;
		/* get child */
		Widget *wd_child = (*it).second;
		/* tell him we are painting */
		ClipDrawContext ctx(wd_child->Left(), wd_child->Top(), wd_child->Width(), wd_child->Height());
		if (!ctx.IsEmpty()) wd_child->OnPaint(ev);
	}
}

/*virtual*/ void CompositeWidget::OnLeftButtonDown(EvtLeftButtonDown &ev)
{
	//Point16 pt(ev->we.click.pt.x, ev->we.click.pt.y);
	Widget *wd_child = WidgetFromPt(ev.m_pt);
	if (wd_child != NULL && wd_child != this) {
		wd_child->OnLeftButtonDown(ev);
		return;
	}
	super::OnLeftButtonDown(ev);
}

/*virtual*/ void CompositeWidget::OnRightButtonDown(EvtRightButtonDown &ev)
{
	//Point16 pt(ev->we.click.pt.x, ev->we.click.pt.y);
	Widget *wd_child = WidgetFromPt(ev.m_pt);
	if (wd_child != NULL && wd_child != this) {
		wd_child->OnRightButtonDown(ev);
		return;
	}
	super::OnRightButtonDown(ev);
}

/*virtual*/ void CompositeWidget::OnResize(EvtResize &ev)
{
	if (ev.m_change == Point16(0, 0)) return;

	EvtResizeParent evp(ev);
	/* notify all children */
	for (WidgetIterator it_next = m_widgets.begin(); it_next != m_widgets.end(); ) {
		/* save the iterator (it can be invalidated) and move forward */
		WidgetIterator it = it_next++;
		/* get child */
		Widget *wd_child = (*it).second;
		/* tell him we are resizing */
		wd_child->OnResizeParent(evp);
	}
	super::OnResize(ev);
}

}; // namespace gui