/*
    ParaGUI - crossplatform widgetset
    Copyright (C) 2000,2001,2002  Alexander Pipelka
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    Alexander Pipelka
    pipelka@teleweb.at
 
    Last Update:      $Author: braindead $
    Update Date:      $Date: 2003/05/05 07:47:38 $
    Source File:      $Source: /cvsroot/paragui/paragui/src/widgets/pgdropdown.cpp,v $
    CVS/RCS Revision: $Revision: 1.3.6.3 $
    Status:           $State: Exp $
*/

#include <cmath>

#include "pgdropdown.h"
#include "pglog.h"

PG_DropDown::PG_DropDown(PG_Widget* parent, int id, const PG_Rect& r, const char* style) : PG_Widget(parent, r) {
	PG_Rect rect(0, 0, r.my_width - r.my_height, r.my_height);

	SetID(id);

	my_EditBox = new PG_LineEdit(this, rect, style);

	PG_Rect rbutton(abs(r.my_width - r.my_height), 0, r.my_height, r.my_height);
	my_DropButton = new PG_Button(this, PG_IDDROPDOWN_BOX, rbutton, NULL, style);

	PG_Rect rlist(r.my_xpos, r.my_ypos + r.my_height +1, r.my_width, r.my_height * 5);
	my_DropList = new PG_ListBox(NULL, rlist, style);
	my_DropList->SetEventObject(MSG_SELECTITEM, this, (MSG_CALLBACK_OBJ)&PG_DropDown::select_handler);

	//LoadThemeStyle(style);
}

PG_DropDown::~PG_DropDown() {
	delete my_DropList;
}

void PG_DropDown::LoadThemeStyle(const char* style) {
	my_EditBox->LoadThemeStyle(style);
	my_DropButton->LoadThemeStyle(style);
	my_DropList->LoadThemeStyle(style);
}

void PG_DropDown::AddItem(const char* text, void* userdata) {
	Uint16 h;

	PG_FontEngine::GetTextSize(text, GetFont(), NULL, NULL, NULL, NULL, &h);

	PG_ListBoxItem* item = new PG_ListBoxItem(h+2, text, NULL, userdata);
	my_DropList->AddItem(item);
}

void PG_DropDown::RemoveAll() {
	my_DropList->RemoveAll();
}

void PG_DropDown::DeleteAll() {
	my_DropList->DeleteAll();
}

void PG_DropDown::eventShow() {
	my_DropList->SetVisible(false);
}

void PG_DropDown::eventHide() {
	my_DropList->Hide();
}

bool PG_DropDown::eventButtonClick (int id, PG_Widget* widget) {
	if(id != PG_IDDROPDOWN_BOX) {
		return false;
	}

	if(my_DropList->IsVisible()) {
		my_DropList->Hide();
	} else {
		my_DropList->MoveRect(my_xpos, my_ypos+my_height);
		my_DropList->Show();
		my_DropList->BringToFront();
	}

	return true;
}

void PG_DropDown::SetIndent(int indent) {
	my_DropList->SetIndent(indent);
}

void PG_DropDown::SetEditable(bool edit) {
	my_EditBox->SetEditable(edit);
}

bool PG_DropDown::GetEditable() {
	return my_EditBox->GetEditable();
}

const char* PG_DropDown::GetText() {
	return my_EditBox->GetText();
}

void PG_DropDown::SetText(const char* new_text) {
	my_EditBox->SetText(new_text);
}

bool PG_DropDown::eventSelectItem(PG_ListBoxBaseItem* item) {
	return false;
}

// TODO: Fill me with code :)
void PG_DropDown::eventSizeWidget(Uint16 w, Uint16 h) {}

void PG_DropDown::eventMoveWidget(int x, int y) {
	if(my_DropList->IsVisible()) {
		my_DropList->Hide();
	}
}

PARAGUI_CALLBACK(PG_DropDown::select_handler) {
	PG_ListBoxItem* item = (PG_ListBoxItem*)data;

	my_EditBox->SetText(item->GetText());
	item->Select(false);
	my_DropList->SelectItem(NULL);
	my_DropList->Hide();

	if(GetParent()) {
		GetParent()->RemoveChild(my_DropList);
	}

	eventSelectItem(item);
	SendMessage(NULL, MSG_SELECTITEM, GetID(), (unsigned long)item);

	return true;
}

// 1. try to fix the problems when running PG_DropDown in a modal loop
bool PG_DropDown::ProcessEvent(const SDL_Event * event, bool bModal) {

	if(bModal && my_DropList->IsVisible()) {
		if(my_DropList->ProcessEvent(event, true)) {
			return true;
		}
	}

	return PG_Widget::ProcessEvent(event, bModal);
}

void PG_DropDown::SelectFirstItem() {
	my_DropList->SelectFirstItem();
}

void PG_DropDown::SelectNextItem() {
	my_DropList->SelectNextItem();
}

void PG_DropDown::SelectPrevItem() {
	my_DropList->SelectPrevItem();
}

void PG_DropDown::SelectItem(const int n) {
	int i;
	
	my_DropList->SelectFirstItem();
	
	for (i=0; i < n; i++)
	  my_DropList->SelectNextItem();
}