// 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.preferences;

import org.eclipse.core.runtime.preferences.DefaultScope;

import org.eclipse.core.runtime.preferences.IEclipsePreferences;

import org.eclipse.core.runtime.preferences.IScopeContext;

import org.eclipse.core.runtime.preferences.InstanceScope;

import org.eclipse.jface.preference.PreferencePage;

import org.eclipse.jface.resource.ImageDescriptor;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.ui.IWorkbench;

import org.eclipse.ui.IWorkbenchPreferencePage;

import com.symbian.smt.gui.AbstractPersistentDataStore;

import com.symbian.smt.gui.Activator;

import com.symbian.smt.gui.PersistentDataStore;

import com.symbian.smt.gui.smtwidgets.BuildControlWidget;

import com.symbian.smt.gui.smtwidgets.ValidModelDefinedListener;

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

public class BuildPreferences extends PreferencePage implements

		IWorkbenchPreferencePage, ValidModelDefinedListener {

	private BuildControlWidget buildWidget;

	private AbstractPersistentDataStore instanceStore;

	private AbstractPersistentDataStore defaultStore;

	public BuildPreferences() {

	}

	public BuildPreferences(String title) {

		super(title);

	}

	public BuildPreferences(String title, ImageDescriptor image) {

		super(title, image);

	}

	@Override

	protected Control createContents(Composite parent) {

		Composite composite = new Composite(parent, SWT.NONE);

		composite.setLayout(new FillLayout(SWT.VERTICAL));

		buildWidget = new BuildControlWidget(composite, SWT.NONE, true);

		IScopeContext defaultScope = new DefaultScope();

		IEclipsePreferences defaultNode = defaultScope

				.getNode(Activator.PLUGIN_ID);

		defaultStore = new PersistentDataStore(defaultNode);

		IScopeContext instanceScope = new InstanceScope();

		IEclipsePreferences instanceNode = instanceScope

				.getNode(Activator.PLUGIN_ID);

		instanceStore = new PersistentDataStore(instanceNode, defaultNode);

		buildWidget.setOutputFilename(instanceStore.getOutputFilename());

		buildWidget.setWarningLevel(instanceStore.getWarningLevel());

		buildWidget.addModelListener(this);

		composite.pack();

		parent.pack();

		return composite;

	}

	@Override

	public void dispose() {

		if (buildWidget != null) {

			buildWidget.removeModelListener(this);

		}

		super.dispose();

	}

	/*

	 * Comma-separated list of filters to turn on when building the model. All

	 * filters on an item must be present in this list in order for that item to

	 * appear. Order does not matter

	 */

	public void init(IWorkbench workbench) {

		setPreferenceStore(Activator.getDefault().getPreferenceStore());

		setDescription("System Model Manager build options.");

	}

	public void performDefaults() {

		restoreDefaults();

	}

	public boolean performOk() {

		storeValues();

		return super.performOk();

	}

	private void restoreDefaults() {

		buildWidget.setOutputFilename(defaultStore.getOutputFilename());

		buildWidget.setWarningLevel(defaultStore.getWarningLevel());

	}

	private void storeValues() {

		instanceStore.setOutputFilename(buildWidget.getOutputFilename());

		instanceStore.setWarningLevel(buildWidget.getWarningLevel());

	}

	/*

	 * This is called by the observed object when a change is used to ensure the

	 * information entered into the widget is acceptable, in this case at least

	 * 1 system definition xml file

	 * 

	 * @return void

	 */

	public void validModelDefined(ValidModelEvent event) {

		Boolean isValid = event.isValid();

		setValid(isValid);

		if (isValid) {

			setErrorMessage(null);

		} else {

			setErrorMessage(event.getMessage());

		}

	}

}