/*

 * 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:  Definitions for the class CustomInputDialog

 *

 */

package com.nokia.s60tools.analyzetool.ui;

import org.eclipse.jface.dialogs.IInputValidator;

import org.eclipse.jface.dialogs.InputDialog;

import org.eclipse.jface.window.Window;

import com.nokia.s60tools.analyzetool.Activator;

import com.nokia.s60tools.analyzetool.global.Constants;

/**

 * Provides input dialog Checks that user input does not contain spaces.

 *

 * @author kihe

 *

 */

public class CustomInputDialog implements IInputValidator {

	/** Dialog default value. */

	private final String defaultValue;

	/** Dialog hint text. */

	private final String dialogHintText;

	/** Dialog title. */

	private final String dialogTitle;

	/** User input. */

	private String input = "";

	/**

	 * Constructor.

	 *

	 * @param title

	 *            Dialog title

	 * @param hintText

	 *            Dialog hint text

	 * @param defaultVal

	 *            Dialog default input

	 */

	public CustomInputDialog(final String title, final String hintText,

			final String defaultVal) {

		dialogTitle = title;

		dialogHintText = hintText;

		defaultValue = defaultVal;

	}

	/**

	 * Checks that user entered text does not contain illegal/unwanted

	 * characters.

	 *

	 * @param line

	 *            User entered text

	 * @return True if user entered text does not contain illegal characters

	 *         otherwise False

	 */

	public boolean checkCharacters(final String line) {

		CharSequence[] charTable = { "&", "^", "+", "-", "@", "$", "%", "*",

				"(", ")", "|", "\\", "/", "[", "]", "{", "}", "<", ">", "?",

				";", ":", ",", "\"", "'" };

		// thru illegal/unwanted char table

		for (int i = 0; i < charTable.length; i++) {

			// if user entered text contains illegal/unwanted characters =>

			// return false

			if (line.contains(charTable[i])) {

				return false;

			}

		}

		return true;

	}

	/**

	 * Gets self instance.

	 *

	 * @return Self instance

	 */

	public final CustomInputDialog getParent() {

		return this;

	}

	/**

	 * Returns user input.

	 *

	 * @return User input

	 */

	public final String getUserInput() {

		return input;

	}

	/**

	 * Checks is user given input valid for the AnalyzeTool. If input contains

	 * space/illegal character(s) or it contains more than 50 characters the OK

	 * button becomes disabled and corresponding error message is displayed.

	 *

	 * @see org.eclipse.jface.dialogs.IInputValidator#isValid(java.lang.String)

	 *

	 * @param newText

	 *            User input

	 *

	 * @return String Error message if the user given input is invalid otherwise

	 *         empty string

	 */

	public final String isValid(final String newText) {

		CharSequence space = " ";

		if (("").equals(newText)) {

			return ("");

		} else if (newText.contains(space)) {

			return (Constants.INPUT_NO_SPACES_ALLOWED);

		} else if (newText.length() > Constants.MAX_LENGTH_OF_USER_INPUT) {

			return (Constants.INPUT_TOO_LONG);

		} else if (!checkCharacters(newText)) {

			return (Constants.INPUT_ILLEGAL);

		}

		return null;

	}

	/**

	 * Opens dialog

	 */

	public final void open() {

		Activator.getDefault().getWorkbench().getDisplay().syncExec(

				new Runnable() {

					public void run() {

						InputDialog dlg = new InputDialog(Activator

								.getDefault().getWorkbench().getDisplay()

								.getActiveShell(), dialogTitle, dialogHintText,

								defaultValue, getParent());

						if (dlg.open() == Window.OK) {

							input = dlg.getValue();

						}

					}

				});

	}

}