// 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:

// SystemDefinitionFiles.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.IScopeContext;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.BusyIndicator;

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.ManageResources;

import com.symbian.smt.gui.NodeListener;

import com.symbian.smt.gui.PersistentDataStore;

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

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

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

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

public class SystemDefinitionFilesProperties extends PropertyPage implements

		IWorkbenchPropertyPage, ValidModelDefinedListener {

	private SystemDefinitionFilesWidget systemDefinitionFilesWidget;

	private PersistentDataStore projectStore;

	@Override

	protected Control createContents(Composite parent) {

		new NodeListener(getProject());

		// Disable the restore defaults button

		noDefaultAndApplyButton();

		// Create the project scope data store

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

		projectStore = new PersistentDataStore(projectScope

				.getNode(Activator.PLUGIN_ID));

		// Create the widget

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

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

		systemDefinitionFilesWidget = new SystemDefinitionFilesWidget(

				composite, SWT.NONE);

		if (systemDefinitionFilesWidget instanceof ValidModelObservable) {

			((ValidModelObservable) systemDefinitionFilesWidget)

					.addModelListener(this);

		}

		// Set required values

		populate(projectStore);

		return composite;

	}

	@Override

	public void dispose() {

		if (systemDefinitionFilesWidget != null) {

			((ValidModelObservable) systemDefinitionFilesWidget)

				.removeModelListener(this);

		}

		super.dispose();

	}

	private IProject getProject() {

		return (IProject) getElement();

	}

	@Override

	public boolean isValid() {

		// return requiredInformationPresent;

		return super.isValid();

	}

	@Override

	protected void performApply() {

		saveChanges();

	}

	@Override

	protected void performDefaults() {

	}

	@Override

	public boolean performOk() {

		saveChanges();

		return super.performOk();

	}

	private void populate(PersistentDataStore dataStore) {

		systemDefinitionFilesWidget.setSystemDefinitions(dataStore

				.getSystemDefinitionFiles());

	}

	private void saveChanges() {

		Runnable runnable = new Runnable() {

			public void run() {

			// Update the system definition files in the project

			ManageResources.updateSystemDefinitionFiles(getProject(),

					systemDefinitionFilesWidget.getSystemDefinitions(), false);

			// Write to the persistent data store

			projectStore.setSystemDefinitionFiles(systemDefinitionFilesWidget

					.getSystemDefinitions());

			}

		};

		BusyIndicator.showWhile(getShell().getDisplay(), runnable);

	}

	/**

	 * 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

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

	 */

	public void validModelDefined(ValidModelEvent event) {

		Boolean isValid = event.isValid();

		setValid(isValid);

		if (isValid) {

			setErrorMessage(null);

		} else {

			setErrorMessage(event.getMessage());

		}

	}

}