/*

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

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "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.nokia.carbide.cpp.internal.pi.button.ui;

import java.io.File;

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.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.Label;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.PlatformUI;

import com.nokia.carbide.cpp.pi.button.ComNokiaCarbidePiButtonHelpIDs;

public class ExportBupMapGetXmlTask extends WizardPage {

	String exportXmlPathString = null;

	protected ExportBupMapGetXmlTask() {

		super(Messages.getString("ExportBupMapGetXmlTask.selectProfile"));   //$NON-NLS-1$

		setTitle(Messages.getString("ExportBupMapGetXmlTask.selectProfile"));   //$NON-NLS-1$

		setDescription(Messages.getString("ExportBupMapGetXmlTask.exportProfileExplained"));   //$NON-NLS-1$

	}

	// controls

	Composite container;

	private Text exportXmlFileText;

	/* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)

	 */

	public void createControl(Composite parent) {

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

		GridLayout layout = new GridLayout();

		container.setLayout(layout);

		layout.numColumns = 1;

		layout.verticalSpacing = 9;

		Label labelSampleFile = new Label(container, SWT.NONE);

		labelSampleFile.setText(Messages.getString("ExportBupMapGetXmlTask.exportThisProfile"));   //$NON-NLS-1$

		// subcomposite with textbox/button

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

		GridLayout subLayout = new GridLayout();

		subContainer.setLayout(subLayout);

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

		subLayout.numColumns = 2;

		subLayout.verticalSpacing = 9;

		exportXmlFileText = new Text(subContainer, SWT.BORDER | SWT.SINGLE);

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

		exportXmlFileText.addModifyListener(new ModifyListener(){

			public void modifyText(ModifyEvent arg0) {

				validatePage();

			}

		});

		Button button = new Button(subContainer, SWT.PUSH);

		button.setText(Messages.getString("ExportBupMapGetXmlTask.keyPressProfile"));   //$NON-NLS-1$

		button.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				handleBrowse();

			}

		});

		// top tap get focus

		exportXmlFileText.setFocus();

		setControl(container);

		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), ComNokiaCarbidePiButtonHelpIDs.PI_KEY_MAP_EXPORT_WIZARD_XML);

	}

	public void validatePage() {

		if (exportXmlFileText.getText() == null || exportXmlFileText.getText().length() < 1) {

			updateStatus(null);

			setPageComplete(false);

			return;		// blank should be OK, consistent with Eclipse guideline

		}

		setMessage(null, WARNING);

		String xmlFileString = exportXmlFileText.getText();

		File xmlFile = new File (xmlFileString);

		if (xmlFile != null && !xmlFile.isDirectory()) {

			String parentString = xmlFile.getParent();

			if (parentString != null) {

				File parentFile = new File(parentString);

				if (parentFile.isDirectory() && parentFile.exists()) {

					if (!xmlFileString.endsWith(".xml")) { //$NON-NLS-1$

						updateStatus (Messages.getString("ExportBupMapGetXmlTask.extensionMustBeXML"));   //$NON-NLS-1$

						return;

					}

				} else {

					updateStatus(Messages.getString("ExportBupMapGetXmlTask.directory") + parentString + Messages.getString("ExportBupMapGetXmlTask.doesNotExist"));     //$NON-NLS-1$ //$NON-NLS-2$

					return;

				}

			} else {

				updateStatus(Messages.getString("ExportBupMapGetXmlTask.directory") + xmlFileString + Messages.getString("ExportBupMapGetXmlTask.doesNotExist"));     //$NON-NLS-1$ //$NON-NLS-2$

				return;

			}

		} else {

			updateStatus(Messages.getString("ExportBupMapGetXmlTask.enterFileName"));   //$NON-NLS-1$

			return;

		}

		exportXmlPathString = xmlFileString;

		if (new File(exportXmlPathString).exists()) {

			setMessage(exportXmlPathString + Messages.getString("ExportBupMapGetXmlTask.willBeOverwritten"), WARNING); //$NON-NLS-1$

		}

		setPageComplete(true);

		updateStatus(null);

	}

	private void updateStatus(String message) {

		// need to enable finish, setPageComplete eventually check global states

		setErrorMessage(message);

		setPageComplete(message == null);

	}

	private void handleBrowse() {

		FileDialog dialog = new FileDialog(getShell());

		String[] datExtensions = {"*.xml", //$NON-NLS-1$

									"*.*"}; //$NON-NLS-1$

		String[] datNames = {Messages.getString("ExportBupMapGetXmlTask.profilerFiles"),   //$NON-NLS-1$

								Messages.getString("ExportBupMapGetXmlTask.allFiles")};   //$NON-NLS-1$

		dialog.setFilterExtensions(datExtensions);

		dialog.setFilterNames(datNames);

		// Try guiding user to path user is trying to fill

		File clueFile = new File(exportXmlFileText.getText());

		String cluePath = null;

		if (clueFile.isDirectory()) {

			cluePath = clueFile.getAbsolutePath();

		} else {

			cluePath = clueFile.getParent();

		}

		if (cluePath != null) {

			dialog.setFilterPath(cluePath);

		}

		String filePath = dialog.open();

		if (filePath != null) {

			if (filePath.length() > 0) {

				if (!filePath.endsWith(".xml")) {	//$NON-NLS-1$

					filePath += ".xml";	//$NON-NLS-1$

				}

				exportXmlFileText.setText(filePath);

			}

		}		

	}

	public String getExportXml() {

		return exportXmlPathString;

	}

}