/**

 * Copyright (c) 2009 Symbian Foundation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "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:

 * Symbian Foundation - initial contribution.

 * Contributors:

 * Description:

 * Overview:

 * Details:

 * Platforms/Drives/Compatibility:

 * Assumptions/Requirement/Pre-requisites:

 * Failures and causes:

 */

package org.symbian.tools.wrttools.wizards;

import org.eclipse.core.databinding.DataBindingContext;

import org.eclipse.core.databinding.beans.BeansObservables;

import org.eclipse.core.databinding.observable.value.IObservableValue;

import org.eclipse.jface.databinding.viewers.IViewerObservableValue;

import org.eclipse.jface.databinding.viewers.ViewersObservables;

import org.eclipse.jface.viewers.ArrayContentProvider;

import org.eclipse.jface.viewers.DoubleClickEvent;

import org.eclipse.jface.viewers.IDoubleClickListener;

import org.eclipse.jface.viewers.ISelectionChangedListener;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.jface.viewers.LabelProvider;

import org.eclipse.jface.viewers.SelectionChangedEvent;

import org.eclipse.jface.viewers.TableViewer;

import org.eclipse.jface.wizard.IWizardPage;

import org.eclipse.jface.wizard.WizardPage;

import org.eclipse.swt.SWT;

import org.eclipse.swt.graphics.Image;

import org.eclipse.swt.layout.FormAttachment;

import org.eclipse.swt.layout.FormData;

import org.eclipse.swt.layout.FormLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Text;

import org.symbian.tools.wrttools.core.ProjectTemplate;

public class WRTProjectTemplateWizardPage extends WizardPage {

	public class ProjectTemplateLabelProvider extends LabelProvider {

		@Override

		public Image getImage(Object element) {

			return ((ProjectTemplate) element).getIcon();

		}

		@Override

		public String getText(Object element) {

			return ((ProjectTemplate) element).getName();

		}

	}

	private TableViewer templates;

	private Text description;

	private final WizardContext context;

	private final DataBindingContext bindingContext;

	public WRTProjectTemplateWizardPage(WizardContext context, DataBindingContext bindingContext) {

		super("WRTTemplate", "WRT Application Template Selection", null);

		this.context = context;

		this.bindingContext = bindingContext;

		setDescription("Select template that will be used to populate your new project");

	}

	@Override

	public void createControl(Composite parent) {

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

		FormLayout layout = new FormLayout();

		layout.marginWidth = 5;

		composite.setLayout(layout);

		Label label = new Label(composite, SWT.NONE);

		label.setText("Choose a template");

		FormData data = new FormData();

		data.left = new FormAttachment(0, 0);

		data.top = new FormAttachment(0, 0);

		label.setLayoutData(data);

		templates = new TableViewer(composite, SWT.BORDER | SWT.SINGLE);

		FormData templatesData = new FormData();

		templatesData.top = new FormAttachment(label);

		templatesData.left = new FormAttachment(0, 0);

		templatesData.right = new FormAttachment(100, 0);

		templatesData.bottom = new FormAttachment(70, 0);

		templates.getControl().setLayoutData(templatesData);

		templates.addSelectionChangedListener(new ISelectionChangedListener() {

			@Override

			public void selectionChanged(SelectionChangedEvent event) {

				IStructuredSelection selection = (IStructuredSelection)event.getSelection();

				final ProjectTemplate 

					template = (ProjectTemplate) selection.getFirstElement();

				refreshSelection(template);

			}

		});

		templates.addDoubleClickListener(new IDoubleClickListener() {

			@Override

			public void doubleClick(DoubleClickEvent arg0) {

				switchWizardPage();

			}

		});

		description = new Text(composite, SWT.BORDER | SWT.MULTI | SWT.WRAP | SWT .READ_ONLY);

		FormData descriptionData = new FormData();

		descriptionData.top = new FormAttachment(templates.getControl(), 10);

		descriptionData.bottom = new FormAttachment(100, 0);

		descriptionData.left = new FormAttachment(0, 0);

		descriptionData.right = new FormAttachment(100, 0);

		description.setLayoutData(descriptionData);

		templates.setContentProvider(new ArrayContentProvider());

		templates.setLabelProvider(new ProjectTemplateLabelProvider());

		setControl(composite);

		setPageComplete(false);

		IViewerObservableValue selection = ViewersObservables.observeSingleSelection(templates);

		IObservableValue property = BeansObservables.observeValue(context, WizardContext.TEMPLATE);

		bindingContext.bindValue(selection, property);

	}

	protected void switchWizardPage() {

		Display display = getShell().getDisplay();

		display.asyncExec(new Runnable() {

			@Override

			public void run() {

				IWizardPage nextPage = getWizard().getNextPage(WRTProjectTemplateWizardPage.this);

				getContainer().showPage(nextPage);

			}

		});

	}

	protected void refreshSelection(ProjectTemplate template) {

		if (template != null) {

			setErrorMessage(null);

			setPageComplete(true);

			description.setText(template.getDescription());

		} else {

			setErrorMessage("Project template is not selected");

			setPageComplete(false);

			description.setText("");

		}

	}

	public ProjectTemplate getSelectedProjectTemplate() {

		IStructuredSelection selection = (IStructuredSelection) templates.getSelection();

		return (ProjectTemplate) selection.getFirstElement();

	}

}