//
// C++ Implementation: cmainwindow
//
// Author: Oliver Groß <z.o.gross@gmx.de>, (C) 2008
//
// Copyright: See COPYING file that comes with this distribution
//
#include <QApplication>
#include <QStatusBar>
#include <QTreeView>
#include <QMenuBar>
#include <QMenu>
#include <QMessageBox>
#include <QCloseEvent>
#include <QDir>
#include <QFileDialog>
#include <QInputDialog>

#include <libqnono/ccrosspackagemodel.h>
#include <libqnono/ccrosspackage.h>

#include "cmainwindow.h"

namespace qcrossedit {
	using namespace libqnono;
//public:
	CMainWindow::CMainWindow(QWidget *parent) :
		QMainWindow(parent),
		m_Unsaved(false),
		m_Package(NULL)
	{
		setupUi();
		fileNew();
	}
	
	
	CMainWindow::~CMainWindow() {
	}
	
//protected:
	void CMainWindow::setupUi() {
		m_PicListView = new QTreeView();
		m_PicListView->setModel(new CCrossPackageModel(this));
		m_PicListView->setRootIsDecorated(false);
		
		setCentralWidget(m_PicListView);
		
		QMenu * menu;
		
		//file menu
		menu = menuBar()->addMenu("&File");
		menu->addAction("&New", this, SLOT(fileNew()), Qt::CTRL + Qt::Key_N);
		menu->addAction("&Open", this, SLOT(fileOpen()), Qt::CTRL + Qt::Key_O);
		menu->addSeparator();
		menu->addAction("&Save", this, SLOT(fileSave()), Qt::CTRL + Qt::Key_S);
		menu->addAction("Save as...", this, SLOT(fileSaveAs()));
		menu->addSeparator();
		menu->addAction("&Quit", this, SLOT(close()), Qt::CTRL + Qt::Key_Q);
		
		//edit menu
		menu = menuBar()->addMenu("&Edit");
		menu->addAction("&Create empty nonogram...", this, SLOT(editCreateEmpty()));
		menu->addAction("Create nonogram from &picture...", this, SLOT(editCreateFromPicture()));
		menu->addSeparator();
		menu->addAction("&Rename nonogram", this, SLOT(editRename()));
		menu->addAction("Set nonogram &time-out", this, SLOT(editSetTimeout()));
		menu->addAction("&Delete nonogram", this, SLOT(editDelete()));
		menu->addSeparator();
		menu->addAction("Set Package&name...", this, SLOT(editSetPackageName()));
		
		//help Menu
		menu = menuBar()->addMenu("&Help");
		menu->addAction("About QCrossEdit", this, SLOT(helpAbout()));
		menu->addAction("About Qt", qApp, SLOT(aboutQt()));
	}
	
	bool CMainWindow::promtUnsaved() {
		switch (QMessageBox::question(this,
			tr("Unsaved changes"),
			tr("Would you like to save your changes?"),
			QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel)) {
		case QMessageBox::Yes:
			if (!fileSave())
				return false;
		case QMessageBox::No:
			return true;
		default:
			return false;
		}
	}
	
	void CMainWindow::closeEvent(QCloseEvent * event) {
		if (m_Unsaved && !promtUnsaved())
			event->ignore();
		else
			event->accept();
	}
	
//protected slots:
	void CMainWindow::fileNew() {
		if (m_Unsaved && !promtUnsaved())
			return;
		
		m_Unsaved = false;
		
		if (m_Package)
			delete m_Package;
		
		m_Package = new CCrossPackage();
		m_Package->setName(tr("unknown"));
		qobject_cast<CCrossPackageModel *>(m_PicListView->model())->setPackage(m_Package);
		statusBar()->showMessage(tr("New package created."));
	}
	
	void CMainWindow::fileOpen() {
		if (m_Unsaved && !promtUnsaved())
			return;
		
		m_Unsaved = false;
		
		QString fileName = QFileDialog::getOpenFileName(this, tr("Select a nonogram package to open"),
			QString(), tr("QCross Package (*.cpk)"));
		if (!fileName.isEmpty()) {
			if (m_Package)
				delete m_Package;
			
			m_Package = CCrossPackage::read(fileName);
			if (m_Package) {
				statusBar()->showMessage(tr("Package \"%1\" opened.").arg(m_Package->name()));
			}
			
			qobject_cast<CCrossPackageModel *>(m_PicListView->model())->setPackage(m_Package);
		}
	}
	
	bool CMainWindow::fileSave() {
		if (m_Package->fileName().isEmpty())
			return fileSaveAs();
		
		bool result = m_Package->save();
		
		if (result) {
			statusBar()->showMessage(tr("Package \"%1\" saved.").arg(m_Package->name()));
			m_Unsaved = false;
		}
		else
			statusBar()->showMessage(tr("Error occured on saving.").arg(m_Package->name()));
		
		return result;
	}
	
	bool CMainWindow::fileSaveAs() {
		QString fileName = QFileDialog::getSaveFileName(this, tr("Select a file name for the current package"),
			QString(), tr("QCross Package (*.cpk)"));
		if (!fileName.isEmpty()) {
			if (!QRegExp("*.cpk").exactMatch(fileName))
				fileName.append(".cpk");
			
			m_Package->setFileName(fileName);
			return fileSave();
		}
		
		return false;
	}
	
	void CMainWindow::editCreateEmpty() {
		if (qobject_cast<CCrossPackageModel *>(m_PicListView->model())->appendEmpty(tr("untitled"), QSize(32, 32), false))
			m_Unsaved = true;
	}
	
	void CMainWindow::editCreateFromPicture() {
		QString fileName = QFileDialog::getOpenFileName(this, tr("Select a image file to import"),
			QString(), tr("Images (*.png *.xpm *.xbm *.jpg)"));
		if (!fileName.isEmpty()) {
			if (qobject_cast<CCrossPackageModel *>(m_PicListView->model())->appendImage(fileName, QImage(fileName)))
				m_Unsaved = true;
		}
	}
	
	void CMainWindow::editRename() {
	}
	
	void CMainWindow::editSetTimeout() {
		QInputDialog::getInt(this, tr("Timeout"), tr("Set time-out for selected nonogram (in minutes)"));
	}
	
	void CMainWindow::editDelete() {
		QModelIndexList selectedIndexes = m_PicListView->selectionModel()->selectedIndexes();
		foreach (QModelIndex i, selectedIndexes)
			m_PicListView->model()->removeRow(i.row());
	}
	
	void CMainWindow::editSetPackageName() {
		QString newName = QInputDialog::getText(this, tr("Set new package name"),
			tr("Please enter a new name for this package:"), QLineEdit::Normal, m_Package->name());
		
		if (!newName.isEmpty() && m_Package)
			m_Package->setName(newName);
	}
	
	void CMainWindow::helpAbout() {
		QMessageBox::about(this, tr("About"), tr("This is still an unfancy gui for creating and editing nonogram packages."));
	}
}