// 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.smtwidgets;

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.layout.RowLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Group;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Text;

import com.symbian.smt.gui.smtwidgets.ValidModelEvent.Type;

public class BuildControlWidget extends Composite implements

		ValidModelObservable {

	private Text outputFilenameText;

	private List<ValidModelDefinedListener> listeners = new ArrayList<ValidModelDefinedListener>();

	private Button warningLevel1, warningLevel2, warningLevel3, warningLevel4;

	// private String message;

	private static final Pattern validationPattern = Pattern

			.compile("[^:*?<>\"/\\\\|]*");

	/**

	 * Creates a BuildControlWidget composite object

	 * 

	 * @return void

	 */

	public BuildControlWidget(final Composite parent, int style,

			boolean allOptions) {

		super(parent, style);

		setLayout(new FillLayout());

		final Composite gridLayoutComposite = new Composite(this, SWT.NONE);

		gridLayoutComposite.setLayout(new GridLayout(2, false));

		final Label outputFilenameLabel = new Label(gridLayoutComposite,

				SWT.NONE);

		outputFilenameLabel.setText("Output filename");

		outputFilenameText = new Text(gridLayoutComposite, SWT.BORDER);

		outputFilenameText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER,

				true, false));

		outputFilenameText.addModifyListener(new ModifyListener() {

			public void modifyText(ModifyEvent e) {

				checkIfValid();

			}

		});

		if (allOptions) {

			Group group = new Group(gridLayoutComposite, SWT.SHADOW_ETCHED_IN);

			group.setText("Warning level");

			group.setLayout(new RowLayout(SWT.VERTICAL));

			group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false,

					2, 1));

			warningLevel1 = new Button(group, SWT.RADIO);

			warningLevel1.setText("Errors only");

			warningLevel2 = new Button(group, SWT.RADIO);

			warningLevel2.setText("Errors and warnings");

			warningLevel3 = new Button(group, SWT.RADIO);

			warningLevel3.setText("Verbose");

			warningLevel4 = new Button(group, SWT.RADIO);

			warningLevel4.setText("Debug (note: will increase build times)");

		}

	}

	/**

	 * Registers a listener object, which will be notified if the conditions for

	 * proceeding have been met.

	 * 

	 * @param listener

	 *            A ValidModelDefinedListener object

	 * @return void

	 * @see com.symbian.smt.gui.smtwidgets.ValidModelObservable#addModelListener(ValidModelDefinedListener)

	 */

	public void addModelListener(ValidModelDefinedListener listener) {

		listeners.add(listener);

	}

	// Check that at least one system definition file has been specified. Any

	// registered

	// model listeners are notified with a ValidModelEvent.

	private void checkIfValid() {

		if (listeners.size() > 0) {

			String text = outputFilenameText.getText().trim();

			String message = "";

			boolean valid = true;

			Type type = Type.SUCCESS;

			if (text.length() == 0) {

				valid = false;

				message = "Filename must be specified.";

				type = Type.ERROR;

			}

			Matcher matcher = validationPattern.matcher(text);

			matcher.reset();

			if (!matcher.matches()) {

				valid = false;

				message = "Forbidden characters in output filename.";

				type = Type.ERROR;

			}

			ValidModelEvent event = new ValidModelEvent(valid, message, type);

			for (ValidModelDefinedListener listener : listeners) {

				listener.validModelDefined(event);

			}

		}

	}

	/**

	 * This method is for testing purposes only.

	 * 

	 * @return

	 */

	public List<ValidModelDefinedListener> getModelListeners() {

		List<ValidModelDefinedListener> l;

		synchronized (listeners) {

			l = new ArrayList<ValidModelDefinedListener>(listeners);

		}

		return l;

	}

	public String getOutputFilename() {

		String entry = outputFilenameText.getText().trim();

		if (entry.length() > 0) {

			if (!entry.endsWith(".svg")) {

				return entry + ".svg";

			}

		}

		return entry;

	}

	public String getWarningLevel() {

		if (warningLevel1.getSelection()) {

			return "1";

		} else if (warningLevel2.getSelection()) {

			return "2";

		} else if (warningLevel3.getSelection()) {

			return "3";

		} else if (warningLevel4.getSelection()) {

			return "4";

		} else {

			return null;

		}

	}

	/**

	 * @see com.symbian.smt.gui.smtwidgets.ValidModelObservable#removeModelListener(ValidModelDefinedListener)

	 */

	public void removeModelListener(ValidModelDefinedListener listener) {

		synchronized (listeners) {

			listeners.remove(listener);

		}

	}

	public void setOutputFilename(String arg) {

		outputFilenameText.setText(arg);

	}

	public void setWarningLevel(String arg) {

		if ("1".equals(arg)) {

			warningLevel1.setSelection(true);

		} else if ("2".equals(arg)) {

			warningLevel2.setSelection(true);

		} else if ("3".equals(arg)) {

			warningLevel3.setSelection(true);

		} else if ("4".equals(arg)) {

			warningLevel4.setSelection(true);

		}

	}

	// public String getMessage() {

	// return message;

	// }

}