// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

package com.symbian.smt.gui.exportwizards;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.nio.channels.FileChannel;

import org.eclipse.core.resources.IFile;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.resources.IWorkspace;

import org.eclipse.core.resources.IWorkspaceRoot;

import org.eclipse.core.resources.ProjectScope;

import org.eclipse.core.resources.ResourcesPlugin;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.preferences.IScopeContext;

import org.eclipse.jface.dialogs.MessageDialog;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.jface.wizard.WizardPage;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.FileDialog;

import org.eclipse.swt.widgets.List;

import org.eclipse.swt.widgets.Text;

import com.symbian.smt.gui.Activator;

import com.symbian.smt.gui.Logger;

import com.symbian.smt.gui.PersistentDataStore;

import com.symbian.smt.gui.nature.Nature;

public class ExportSelectionPage extends WizardPage {

	private Text text;

	private List list;

	/**

	 * @param pageName

	 */

	protected ExportSelectionPage(IStructuredSelection selection) {

		super("wizardPage");

		setTitle("System Model Manager Export Wizard");

		setDescription("Select the project you wish to export the diagram from, select the location to export to and then click finish");

		setPageComplete(false);

	}

	private void canFinish() {

		if (text.getText().trim().length() > 0

				&& list.getSelectionIndex() != -1) {

			setPageComplete(true);

		} else {

			setPageComplete(false);

		}

	}

	public boolean copyFile() {

		IWorkspace workspace = ResourcesPlugin.getWorkspace();

		IWorkspaceRoot workspaceRoot = workspace.getRoot();

		IProject project = workspaceRoot.getProject(list.getItem(list

				.getSelectionIndex()));

		IScopeContext projectScope = new ProjectScope(project);

		PersistentDataStore store = new PersistentDataStore(projectScope

				.getNode(Activator.PLUGIN_ID));

		IFile projectFile = project.getFile(store.getOutputFilename());

		File toFile = new File(text.getText());

		if (toFile.isDirectory()) {

			MessageDialog.openError(getShell(), "Error", toFile.toString()

					+ " is a directory");

			Logger.log(toFile.toString() + " is a directory");

			return false;

		}

		if (!projectFile.exists()) {

			MessageDialog.openError(getShell(), "Error", "The project "

					+ list.getItem(list.getSelectionIndex())

					+ " does not contain a System Model Diagram");

			return false;

		}

		if (toFile.exists()) {

			if (!MessageDialog.openConfirm(getShell(), "Overwrite?",

					"Do you wish to overwrite the file " + toFile.toString()

							+ "?")) {

				return false;

			}

		}

		try {

			FileChannel in = new FileInputStream(projectFile.getRawLocation()

					.toOSString()).getChannel();

			FileChannel out = new FileOutputStream(text.getText()).getChannel();

			try {

				in.transferTo(0, in.size(), out);

				in.close();

				out.close();

			} catch (IOException e) {

				MessageDialog.openError(getShell(), "Error", e.getMessage());

				Logger.log(e.getMessage(), e);

				return false;

			}

		} catch (FileNotFoundException e) {

			MessageDialog.openError(getShell(), "Error", e.getMessage());

			Logger.log(e.getMessage(), e);

			return false;

		}

		return true;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets

	 * .Composite)

	 */

	public void createControl(Composite parent) {

		Composite container = new Composite(parent, SWT.NULL);

		container.setLayout(new FillLayout(SWT.VERTICAL));

		setControl(container);

		final Composite composite = new Composite(container, SWT.NONE);

		final GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 2;

		composite.setLayout(gridLayout);

		list = new List(composite, SWT.BORDER);

		final GridData gd_list = new GridData(SWT.FILL, SWT.FILL, true, true,

				2, 1);

		list.setLayoutData(gd_list);

		list.addSelectionListener(new SelectionListener() {

			public void widgetDefaultSelected(SelectionEvent e) {

			}

			public void widgetSelected(SelectionEvent e) {

				canFinish();

			}

		});

		IWorkspace workspace = ResourcesPlugin.getWorkspace();

		IWorkspaceRoot workspaceRoot = workspace.getRoot();

		for (IProject project : workspaceRoot.getProjects()) {

			if (project.isOpen()) {

				try {

					if (project.hasNature(Nature.ID)) {

						list.add(project.getName());

					}

				} catch (CoreException e) {

					Logger.log(e.getMessage(), e);

					MessageDialog

							.openError(getShell(), "Error", e.getMessage());

				}

			}

		}

		final Button browseButton = new Button(composite, SWT.NONE);

		browseButton.setText("Browse");

		browseButton.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				// Create and open a file window

				FileDialog dialog = new FileDialog(getShell(), SWT.SAVE);

				String[] filterNames = new String[1];

				filterNames[0] = "*.svg";

				dialog.setFilterExtensions(filterNames);

				String filename = dialog.open();

				if (filename != null) {

					text.setText(filename);

				}

			}

		});

		text = new Text(composite, SWT.BORDER);

		text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));

		text.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent e) {

				canFinish();

			}

		});

	}

}