/*

* 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 "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.s60tools.remotecontrol.ui.dialogs;

import org.eclipse.jface.dialogs.Dialog;

import org.eclipse.jface.dialogs.IDialogConstants;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import com.nokia.s60tools.remotecontrol.resources.Messages;

/**

 * Dialog for renaming file

 */

public class RenameDialog extends Dialog implements ModifyListener {

	/**

	 * Name

	 */

	private String name;

	/**

	 * File name text field

	 */

	private Text nameField = null;

	/**

	 * Flag for keeping track if original name is possible return value.

	 */

	private final boolean allowOriginalName;

	/**

	 * Name for dialog.

	 */

	private final String dialogName;

	/**

	 * Constructor

	 * @param parentShell Shell

	 * @param name Current name of the file

	 * @param allowOriginalName True if it is possible to return original name. False otherwise.

	 */

	public RenameDialog(Shell parentShell, String fileName, boolean allowOriginalName, String dialogName) {

		super(parentShell);

		this.name = fileName;

		this.allowOriginalName = allowOriginalName;

		this.dialogName = dialogName;

	}

    /* (non-Javadoc)

     * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)

     */

    protected void configureShell(Shell shell) {

        super.configureShell(shell);

        shell.setText(dialogName);

    } 	

	/* (non-Javadoc)

     * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite)

     */

    protected void createButtonsForButtonBar(Composite parent) {

    	GridLayout gdl = new GridLayout(1, false);

		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_CENTER);

		parent.setLayout(gdl);

		parent.setLayoutData(gd);

    	createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);

    	createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);

    	if(!allowOriginalName) {

    		// Not allowed to return same file name. User needs to modify name before enabling OK button.

			getButton(IDialogConstants.OK_ID).setEnabled(false);

    	}

    }

    /* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)

	 */

	protected Control createDialogArea(Composite parent) {

		Composite dialogAreaComposite = (Composite) super.createDialogArea(parent);		

		//

		//Adding custom controls

		//

		final int cols = 1;	  

		GridLayout gl = new GridLayout(cols, false);

		GridData gd = new GridData(GridData.FILL_BOTH);

		dialogAreaComposite.setLayout(gl);

		dialogAreaComposite.setLayoutData(gd);

		Label label = new Label(dialogAreaComposite, SWT.NONE);

		label.setText(Messages.getString("RenameDialog.label"));   //$NON-NLS-1$

		nameField = new Text(dialogAreaComposite, SWT.LEFT | SWT.SINGLE | SWT.BORDER);

		nameField.setLayoutData(gd);

		nameField.setText(name);

		nameField.addModifyListener(this);

		return dialogAreaComposite;

	}

	/* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)

	 */

	protected void buttonPressed(int buttonId) {	

		if (buttonId == IDialogConstants.OK_ID) {

			// Save file name that user entered

			name = nameField.getText();

		}	

		super.buttonPressed(buttonId);

	}

	/**

	 * Get file name

	 * @return File name that user entered. If user canceled dialog

	 * 			the original file name is returned.

	 */

	public String getFileName(){

		return name;

	}

	/* (non-Javadoc)

	 * @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)

	 */

	public void modifyText(ModifyEvent e) {

		if(!allowOriginalName && nameField.getText().equalsIgnoreCase(name)) {

			// Not allowed to return same file name.

			getButton(IDialogConstants.OK_ID).setEnabled(false);

		} else {

			getButton(IDialogConstants.OK_ID).setEnabled(true);

		}

		// Empty names are not allowed.

		if(nameField.getText().equals("")) { //$NON-NLS-1$

			getButton(IDialogConstants.OK_ID).setEnabled(false);

		}

	}

}