// 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.FilterWidget;

public class FilterPreferences extends PreferencePage implements

		IWorkbenchPreferencePage {

	private FilterWidget filterWidget;

	private AbstractPersistentDataStore instanceStore;

	private AbstractPersistentDataStore defaultStore;

	public FilterPreferences() {

	}

	public FilterPreferences(String title) {

		super(title);

	}

	public FilterPreferences(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));

		filterWidget = new FilterWidget(composite, SWT.NONE);

		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);

		filterWidget.setFilterItems(instanceStore.getFilterHasItems());

		composite.pack();

		parent.pack();

		return composite;

	}

	/*

	 * 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("List of filters to turn on when building the model. \n"

				+ "All filters on an item must be present in this "

				+ "list in order for that item to appear. \n"

				+ "Order does not matter.");

	}

	public void performDefaults() {

		restoreDefaults();

	}

	public boolean performOk() {

		storeValues();

		return super.performOk();

	}

	private void restoreDefaults() {

		filterWidget.setFilterItems(defaultStore.getFilterHasItems());

	}

	private void storeValues() {

		instanceStore.setFilterHasItems(filterWidget.getFilterItems());

	}

}