// 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:

// ModelLabelsProperties.java

// 

//

package com.symbian.smt.gui.properties;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.resources.ProjectScope;

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.swt.SWT;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.ui.IWorkbenchPropertyPage;

import org.eclipse.ui.dialogs.PropertyPage;

import com.symbian.smt.gui.Activator;

import com.symbian.smt.gui.NodeListener;

import com.symbian.smt.gui.PersistentDataStore;

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

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

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

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

public class ModelLabelProperties extends PropertyPage implements

		IWorkbenchPropertyPage, ValidModelDefinedListener {

	private ModelLabelsWidget modelLabelsWidget;

	private PersistentDataStore projectStore;

	private PersistentDataStore instanceStore;

	@Override

	protected Control createContents(Composite parent) {

		new NodeListener(getProject());

		// Create the project scope data store

		IScopeContext projectScope = new ProjectScope(this.getProject());

		projectStore = new PersistentDataStore(projectScope

				.getNode(Activator.PLUGIN_ID));

		// Create the default scope data store

		IScopeContext defaultScope = new DefaultScope();

		IEclipsePreferences defaultNode = defaultScope

				.getNode(Activator.PLUGIN_ID);

		IScopeContext instanceScope = new InstanceScope();

		IEclipsePreferences instanceNode = instanceScope

				.getNode(Activator.PLUGIN_ID);

		instanceStore = new PersistentDataStore(instanceNode, defaultNode);

		// Create the widget

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

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

		modelLabelsWidget = new ModelLabelsWidget(composite, SWT.NONE);

		modelLabelsWidget.initialiseModelVersionText(projectStore);

		modelLabelsWidget.initialiseDistributionText(projectStore);

		modelLabelsWidget.addModelListener(this);

		// Set required values

		populate(projectStore);

		return composite;

	}

	@Override

	public void dispose() {

		if (modelLabelsWidget != null) {

			modelLabelsWidget.removeModelListener(this);

		}

		super.dispose();

	}

	private IProject getProject() {

		return (IProject) getElement();

	}

	@Override

	protected void performApply() {

		saveChanges();

	}

	@Override

	protected void performDefaults() {

		populate(instanceStore);

	}

	@Override

	public boolean performOk() {

		saveChanges();

		return super.performOk();

	}

	private void populate(PersistentDataStore dataStore) {

		// Model Version Text and Distribution Text fields have already been

		// initialised via the calls

		// to modelLabelsWidget.initialiseModelVersionText() and

		// modelLabelsWidget.initialiseDistributionText() respectively

		modelLabelsWidget.setCopyrightText(dataStore.getCopyrightText());

		modelLabelsWidget.setModelName(dataStore.getModelName());

		modelLabelsWidget.setModelVersion(dataStore.getModelVersion());

		modelLabelsWidget.setSystemName(dataStore.getSystemName());

		modelLabelsWidget.setSystemVersion(dataStore.getSystemVersion());

	}

	private void saveChanges() {

		projectStore.setCopyrightText(modelLabelsWidget.getCopyrightText());

		projectStore.setDistributionTexts(modelLabelsWidget

				.getDistributionTexts());

		projectStore.setSelectedDistributionText(modelLabelsWidget

				.getSelectedDistributionText());

		projectStore.setModelName(modelLabelsWidget.getModelName());

		projectStore.setModelVersion(modelLabelsWidget.getModelVersion());

		projectStore.setModelVersionTexts(modelLabelsWidget

				.getModelVersionTexts());

		projectStore.setSelectedModelVersionText(modelLabelsWidget

				.getSelectedModelVersionText());

		projectStore.setSystemName(modelLabelsWidget.getSystemName());

		projectStore.setSystemVersion(modelLabelsWidget.getSystemVersion());

	}

	/**

	 * This method is called by the observed object when a change occurs to

	 * ensure the information entered into the widget is acceptable. In this

	 * case we set the page in error mode if validation of the model version

	 * text field or of the distribution text field fails.

	 * 

	 * @return void

	 * @see com.symbian.smt.gui.smtwidgets.ValidModelDefinedListener#validModelDefined(ValidModelEvent)

	 */

	public void validModelDefined(ValidModelEvent event) {

		Boolean isValid = event.isValid();

		Type eventType = event.getType();

		setValid(isValid);

		if (isValid) {

			setErrorMessage(null);

			if (eventType == Type.WARNING) {

				setMessage(event.getMessage(), WARNING);

			}

		} else {

			setErrorMessage(event.getMessage());

			setMessage(null);

		}

	}

}