/*

 * 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 java.util.ArrayList;

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.BupEventMapManager;

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

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

public class ImportBupMapGetXmlTask extends WizardPage {

	private final static String XML_EXTENSION= "xml"; //$NON-NLS-1$

	private boolean visableBefore = false;

	String importXmlPathString = null;

	ArrayList<IBupEventMapProfile> overlapList = new ArrayList<IBupEventMapProfile>();

	protected ImportBupMapGetXmlTask() {

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

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

		setDescription(Messages.getString("ImportBupMapGetXmlTask.importProfileExplained"));  //$NON-NLS-1$

	}

	// controls

	Composite container;

	private Text inputXmlFileText;

	/* (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("ImportBupMapGetXmlTask.importThisProfile"));  //$NON-NLS-1$

		// 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;

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

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

		inputXmlFileText.addModifyListener(new ModifyListener(){

			public void modifyText(ModifyEvent arg0) {

				validatePage();

			}

		});

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

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

		button.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				handleBrowse();

			}

		});

		// top tap get focus

		inputXmlFileText.setFocus();

		setControl(container);

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

	}

	public void validatePage() {

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

			updateStatus(null);

			setPageComplete(false);

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

		}

		int dotLoc = inputXmlFileText.getText().lastIndexOf('.');

		if (dotLoc != -1) {

			String ext = inputXmlFileText.getText().substring(dotLoc + 1);

			if (ext.equalsIgnoreCase(XML_EXTENSION) == false) {

				updateStatus(Messages.getString("ImportBupMapGetXmlTask.mustEndWithXML"));  //$NON-NLS-1$

				return;

			}

		}

		if (!(new File(inputXmlFileText.getText()).exists())) {

			updateStatus(Messages.getString("ImportBupMapGetXmlTask.fileDoesNotExist"));  //$NON-NLS-1$

			return;

		}

		if (!(new File(inputXmlFileText.getText()).isFile())) {

			updateStatus(Messages.getString("ImportBupMapGetXmlTask.enterProfileFileName"));  //$NON-NLS-1$

			return;		

		}

		// this file looks good, let's see if it got overlap

		java.io.File file = new java.io.File(inputXmlFileText.getText());

		overlapList = BupEventMapManager.getInstance().getOverLapWithWorkspace(file.toURI());

		importXmlPathString = inputXmlFileText.getText();

		((ImportBupMapWizard)getWizard()).setAllowFinish(overlapList.size() == 0);

		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("ImportBupMapGetXmlTask.profileFiles"),  //$NON-NLS-1$

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

		dialog.setFilterExtensions(datExtensions);

		dialog.setFilterNames(datNames);

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

		File clueFile = new File(inputXmlFileText.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) {

				inputXmlFileText.setText(filePath);

			}

		}		

	}

	public void setVisible(boolean visable) {

		super.setVisible(visable);

		if (visable) {

			// block the text if it's wrong on startup, so user know what's wrong

			if (visableBefore == false && getErrorMessage() != null) {

				inputXmlFileText.selectAll();

			}

			if (new java.io.File(inputXmlFileText.getText()).exists()) {

				if (overlapList.size() > 0) {

					((ImportBupMapWizard)getWizard()).setAllowFinish(false);

				}

				((ImportBupMapWizard)getWizard()).setAllowFinish(true);

			} else {

				((ImportBupMapWizard)getWizard()).setAllowFinish(false);

			}

		} else {

			((ImportBupMapWizard)getWizard()).setAllowFinish(true);

		}

		visableBefore = visable;

	}

	/**

	 * @return

	 */

	public String[] getOverLapList() {

		ArrayList<String> resultList = new ArrayList<String>();

		for (IBupEventMapProfile overlapProfile : overlapList) {

			resultList.add(overlapProfile.getProfileId());

		}

		return resultList.toArray(new String[resultList.size()]);

	}

	/**

	 * @return

	 */

	public String getxImportXml() {

		return importXmlPathString;

	}

}