//=========================================================
//	MusE
//	Linux Music Editor
//	$Id: cobject.cpp,v 1.4 2004/02/02 12:10:09 wschweer Exp $
//
//	(C) Copyright 1999/2000 Werner Schweer (ws@seh.de)
//
//	This program is free software; you can redistribute it and/or
//	modify it under the terms of the GNU General Public License
//	as published by the Free Software Foundation; version 2 of
//	the License, or (at your option) any later version.
//
//	This program 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 General Public License for more details.
//
//	You should have received a copy of the GNU General Public License
//	along with this program; if not, write to the Free Software
//	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA	02110-1301, USA.
//
//=========================================================

#include "cobject.h"
#include "xml.h"
#include "gui.h"
#include "globals.h"
#include "app.h"
#include "shortcuts.h"

#include <QMdiSubWindow>
#include <QToolBar>
#include <QMenuBar>
#include <QAction>

using std::list;
using MusEGlobal::muse;

namespace MusEGui {

int TopWin::_widthInit[TOPLEVELTYPE_LAST_ENTRY];
int TopWin::_heightInit[TOPLEVELTYPE_LAST_ENTRY];
QByteArray TopWin::_toolbarSharedInit[TOPLEVELTYPE_LAST_ENTRY];
QByteArray TopWin::_toolbarNonsharedInit[TOPLEVELTYPE_LAST_ENTRY];
bool TopWin::_sharesWhenFree[TOPLEVELTYPE_LAST_ENTRY];
bool TopWin::_sharesWhenSubwin[TOPLEVELTYPE_LAST_ENTRY];
bool TopWin::_defaultSubwin[TOPLEVELTYPE_LAST_ENTRY];
bool TopWin::initInited=false;

TopWin::TopWin(ToplevelType t, QWidget* parent, const char* name, Qt::WindowFlags f)
                 : QMainWindow(parent, f)
{
        _isDeleting = false;
	if (initInited==false)
		initConfiguration();

	_type=t;

	setObjectName(QString(name));
	// Allow multiple rows.	Tim.
	//setDockNestingEnabled(true);
	setIconSize(ICON_SIZE);

	subwinAction=new QAction(tr("As subwindow"), this);
	subwinAction->setCheckable(true);
	connect(subwinAction, SIGNAL(toggled(bool)), SLOT(setIsMdiWin(bool)));

	shareAction=new QAction(tr("Shares tools and menu"), this);
	shareAction->setCheckable(true);
	connect(shareAction, SIGNAL(toggled(bool)), SLOT(shareToolsAndMenu(bool)));

	fullscreenAction=new QAction(tr("Fullscreen"), this);
	fullscreenAction->setCheckable(true);
	fullscreenAction->setChecked(false);
	fullscreenAction->setShortcut(shortcuts[SHRT_FULLSCREEN].key);
	connect(fullscreenAction, SIGNAL(toggled(bool)), SLOT(setFullscreen(bool)));

	mdisubwin=NULL;
	_sharesToolsAndMenu=_defaultSubwin[_type] ? _sharesWhenSubwin[_type] : _sharesWhenFree[_type];
	if (_defaultSubwin[_type])
		setIsMdiWin(true);

	if (_sharesToolsAndMenu)
		menuBar()->hide();

	subwinAction->setChecked(isMdiWin());
	shareAction->setChecked(_sharesToolsAndMenu);
	fullscreenAction->setEnabled(!isMdiWin());
	
	if (mdisubwin)
		mdisubwin->resize(_widthInit[_type], _heightInit[_type]);
	else
		resize(_widthInit[_type], _heightInit[_type]);
}


//---------------------------------------------------------
//	 readStatus
//---------------------------------------------------------

void TopWin::readStatus(MusECore::Xml& xml)
{
	for (;;)
	{
		MusECore::Xml::Token token = xml.parse();
		if (token == MusECore::Xml::Error || token == MusECore::Xml::End)
			break;
	
		QString tag = xml.s1();
		switch (token)
		{
			case MusECore::Xml::TagStart:
				if (tag == "geometry_state")
				{
					if (!restoreGeometry(QByteArray::fromHex(xml.parse1().toAscii())))
						fprintf(stderr,"ERROR: couldn't restore geometry. however, this is probably not really a problem.\n");
				}
				else if (tag == "toolbars")
				{
					if (!sharesToolsAndMenu())
					{
						if (!restoreState(QByteArray::fromHex(xml.parse1().toAscii())))
						 fprintf(stderr,"ERROR: couldn't restore toolbars. however, this is not really a problem.\n");
					}
					else
					{
						_savedToolbarState=QByteArray::fromHex(xml.parse1().toAscii());
						if (_savedToolbarState.isEmpty())
							_savedToolbarState=_toolbarNonsharedInit[_type];
					}
				}
				else if (tag == "shares_menu")
				{
					shareToolsAndMenu(xml.parseInt());
				}
				else if (tag == "is_subwin")
				{
					setIsMdiWin(xml.parseInt());
				}
				else
					xml.unknown("TopWin");
				break;

			case MusECore::Xml::TagEnd:
				if (tag == "topwin")
					return;
	
			default:
				break;
		}
	}
}

//---------------------------------------------------------
//	 writeStatus
//---------------------------------------------------------

void TopWin::writeStatus(int level, MusECore::Xml& xml) const
{
	xml.tag(level++, "topwin");

	// the order of these tags has a certain sense
	// changing it won't break muse, but it may break proper
	// restoring of the positions
	xml.intTag(level, "is_subwin", isMdiWin());
	xml.strTag(level, "geometry_state", saveGeometry().toHex().data());
	xml.intTag(level, "shares_menu", sharesToolsAndMenu());

	if (!sharesToolsAndMenu())
		xml.strTag(level, "toolbars", saveState().toHex().data());
	else
		xml.strTag(level, "toolbars", _savedToolbarState.toHex().data());

	xml.tag(level, "/topwin");
}

void TopWin::hide()
{
	if (mdisubwin)
		mdisubwin->close();
	
	QMainWindow::hide();
}

void TopWin::show()
{
	if (mdisubwin)
		mdisubwin->show();
	
	QMainWindow::show();
}

void TopWin::setVisible(bool param)
{
	if (mdisubwin)
	{
		if (param)
			mdisubwin->show();
		else
			mdisubwin->close();
	}
	QMainWindow::setVisible(param);
}

QMdiSubWindow* TopWin::createMdiWrapper()
{
	if (mdisubwin==NULL)
	{
		mdisubwin = new QMdiSubWindow();
		mdisubwin->setWidget(this);
	}
	
	return mdisubwin;
}

void TopWin::setIsMdiWin(bool val)
{
	if (val)
	{
		if (!isMdiWin())
		{
			_savedToolbarState = saveState();
			int width_temp=width();
			int height_temp=height();
			bool vis=isVisible();
			
			QMdiSubWindow* subwin = createMdiWrapper();
			muse->addMdiSubWindow(subwin);
			subwin->resize(width_temp, height_temp);
			subwin->move(0,0);
			subwin->setVisible(vis);
			this->QMainWindow::show(); //bypass the delegation to the subwin
			
			if (_sharesToolsAndMenu == _sharesWhenFree[_type])
				shareToolsAndMenu(_sharesWhenSubwin[_type]);
			
			fullscreenAction->setEnabled(false);
			fullscreenAction->setChecked(false);
			subwinAction->setChecked(true);
			muse->updateWindowMenu();
		}
		else
		{
			if (MusEGlobal::debugMsg) printf("TopWin::setIsMdiWin(true) called, but window is already a MDI win\n");
		}
	}
	else
	{
		if (isMdiWin())
		{
			int width_temp=width();
			int height_temp=height();
			bool vis=isVisible();

			QMdiSubWindow* mdisubwin_temp=mdisubwin;
			mdisubwin=NULL;
			setParent(NULL);
			mdisubwin_temp->hide();
			delete mdisubwin_temp;
			
			resize(width_temp, height_temp);
			setVisible(vis);

			if (_sharesToolsAndMenu == _sharesWhenSubwin[_type])
				shareToolsAndMenu(_sharesWhenFree[_type]);
						
			fullscreenAction->setEnabled(true);
			subwinAction->setChecked(false);
			muse->updateWindowMenu();
		}
		else
		{
			if (MusEGlobal::debugMsg) printf("TopWin::setIsMdiWin(false) called, but window is not a MDI win\n");
		}
	}
}

bool TopWin::isMdiWin() const
{
	return (mdisubwin!=NULL);
}

void TopWin::insertToolBar(QToolBar*, QToolBar*) { printf("ERROR: THIS SHOULD NEVER HAPPEN: TopWin::insertToolBar called, but it's not implemented! ignoring it\n"); }
void TopWin::insertToolBarBreak(QToolBar*) { printf("ERROR: THIS SHOULD NEVER HAPPEN: TopWin::insertToolBarBreak called, but it's not implemented! ignoring it\n"); }
void TopWin::removeToolBar(QToolBar*) { printf("ERROR: THIS SHOULD NEVER HAPPEN: TopWin::removeToolBar called, but it's not implemented! ignoring it\n"); }
void TopWin::removeToolBarBreak(QToolBar*) { printf("ERROR: THIS SHOULD NEVER HAPPEN: TopWin::removeToolBarBreak called, but it's not implemented! ignoring it\n"); }
void TopWin::addToolBar(Qt::ToolBarArea, QToolBar* tb) { printf("ERROR: THIS SHOULD NEVER HAPPEN: TopWin::addToolBar(Qt::ToolBarArea, QToolBar*) called, but it's not implemented!\nusing addToolBar(QToolBar*) instead\n"); addToolBar(tb);}

void TopWin::addToolBar(QToolBar* toolbar)
{
	_toolbars.push_back(toolbar);
	
	if (!_sharesToolsAndMenu)
		QMainWindow::addToolBar(toolbar);
	else
		toolbar->hide();
	
	toolbar->setIconSize(ICON_SIZE);
}

QToolBar* TopWin::addToolBar(const QString& title)
{
	QToolBar* toolbar = new QToolBar(title, this);
	addToolBar(toolbar);
	return toolbar;
}


void TopWin::shareToolsAndMenu(bool val)
{
	if (_sharesToolsAndMenu == val)
	{
		if (MusEGlobal::debugMsg) printf("TopWin::shareToolsAndMenu() called but has no effect\n");
		return;
	}
	
	
	_sharesToolsAndMenu = val;
	
	if (!val)
	{
		muse->shareMenuAndToolbarChanged(this, false);
		
		for (list<QToolBar*>::iterator it=_toolbars.begin(); it!=_toolbars.end(); it++)
			if (*it != NULL)
			{
				QMainWindow::addToolBar(*it);
				(*it)->show();
			}
			else
				QMainWindow::addToolBarBreak();
				
		restoreState(_savedToolbarState);
		_savedToolbarState.clear();
		
		menuBar()->show();
	}
	else
	{
		if (_savedToolbarState.isEmpty())	 // this check avoids overwriting a previously saved state 
			_savedToolbarState = saveState(); // (by setIsMdiWin) with a now incorrect (empty) state
		
		for (list<QToolBar*>::iterator it=_toolbars.begin(); it!=_toolbars.end(); it++)
			if (*it != NULL)
			{
				QMainWindow::removeToolBar(*it); // this does NOT delete the toolbar, which is good
				(*it)->setParent(NULL);
			}
		
		menuBar()->hide();
		
		muse->shareMenuAndToolbarChanged(this, true);
	}
	
	shareAction->setChecked(val);
}



//---------------------------------------------------------
//	 storeInitialState
//---------------------------------------------------------

void TopWin::storeInitialState() const
{
	if (mdisubwin)
	{
		_widthInit[_type] = mdisubwin->width();
		_heightInit[_type] = mdisubwin->height();
	}
	else
	{
		_widthInit[_type] = width();
		_heightInit[_type] = height();
	}
	
	if (sharesToolsAndMenu())
	{
		if (muse->getCurrentMenuSharingTopwin() == this)
			_toolbarSharedInit[_type] = muse->saveState();
	}
	else
		_toolbarNonsharedInit[_type] = saveState();
}



//initConfiguration() restores default "traditional muse" configuration
void TopWin::initConfiguration()
{
	if (initInited==false)
	{
		for (int i=0;i<TOPLEVELTYPE_LAST_ENTRY;i++)
		{
			_widthInit[i]=800;
			_heightInit[i]=600;
			_sharesWhenFree[i]=false;
			_sharesWhenSubwin[i]=true;
			_defaultSubwin[i]=false;
		}
		
		_defaultSubwin[ARRANGER]=true;
		
		initInited=true;
	}		
}

//---------------------------------------------------------
//	 readConfiguration
//---------------------------------------------------------

void TopWin::readConfiguration(ToplevelType t, MusECore::Xml& xml)
{
	if (initInited==false)
		initConfiguration();

	for (;;)
	{
		MusECore::Xml::Token token = xml.parse();
		if (token == MusECore::Xml::Error || token == MusECore::Xml::End)
			break;
			
		const QString& tag = xml.s1();
		switch (token)
		{
			case MusECore::Xml::TagStart:
				if (tag == "width")
					_widthInit[t] = xml.parseInt();
				else if (tag == "height")
					_heightInit[t] = xml.parseInt();
				else if (tag == "nonshared_toolbars")
					_toolbarNonsharedInit[t] = QByteArray::fromHex(xml.parse1().toAscii());
				else if (tag == "shared_toolbars")
					_toolbarSharedInit[t] = QByteArray::fromHex(xml.parse1().toAscii());
				else if (tag == "shares_when_free")
					_sharesWhenFree[t] = xml.parseInt();
				else if (tag == "shares_when_subwin")
					_sharesWhenSubwin[t] = xml.parseInt();
				else if (tag == "default_subwin")
					_defaultSubwin[t] = xml.parseInt();
				else
					xml.unknown("TopWin");
				break;

			case MusECore::Xml::TagEnd:
				if (tag == "topwin")
					return;

			default:
				break;
		}
	}
}


//---------------------------------------------------------
//	 writeConfiguration
//---------------------------------------------------------

void TopWin::writeConfiguration(ToplevelType t, int level, MusECore::Xml& xml)
{
	if (!initInited)
	{
		printf ("WARNING: TopWin::writeConfiguration() called although the config hasn't been\n"
		        "				 initalized! writing default configuration\n");
		initConfiguration();
	}
	xml.tag(level++, "topwin");
	xml.intTag(level, "width", _widthInit[t]);
	xml.intTag(level, "height", _heightInit[t]);
	xml.strTag(level, "nonshared_toolbars", _toolbarNonsharedInit[t].toHex().data());
	xml.strTag(level, "shared_toolbars", _toolbarSharedInit[t].toHex().data());
	xml.intTag(level, "shares_when_free", _sharesWhenFree[t]);
	xml.intTag(level, "shares_when_subwin", _sharesWhenSubwin[t]);
	xml.intTag(level, "default_subwin", _defaultSubwin[t]);
	xml.etag(level, "topwin");
}

void TopWin::initTopwinState()
{
	if (sharesToolsAndMenu())
	{
		if (this == muse->getCurrentMenuSharingTopwin())
			muse->restoreState(_toolbarSharedInit[_type]);
	}
	else
		restoreState(_toolbarNonsharedInit[_type]);
}

void TopWin::restoreMainwinState()
{
	if (sharesToolsAndMenu())
		initTopwinState();
}

QString TopWin::typeName(ToplevelType t)
{
	switch (t)
	{
		case PIANO_ROLL: return tr("Piano roll");
		case LISTE: return tr("List editor");
		case DRUM: return tr("Drum editor");
		case MASTER: return tr("Master track editor");
		case LMASTER: return tr("Master track list editor");
		case WAVE: return tr("Wave editor");
		case CLIPLIST: return tr("Clip list");
		case MARKER: return tr("Marker view");
		case SCORE: return tr("Score editor");
		case ARRANGER: return tr("Arranger");
		default: return tr("<unknown toplevel type>");
	}
}

void TopWin::setFullscreen(bool val)
{
	if (val)
		showFullScreen();
	else
		showNormal();
}

void TopWin::resize(int w, int h)
{
	QMainWindow::resize(w,h);
	
	if (isMdiWin())
		mdisubwin->resize(w,h);
}

void TopWin::resize(const QSize& s)
{
	resize(s.width(), s.height());
}

} // namespace MusEGui