bundles/common/org.eclipse.apogy.common.converters.ui/src/org/eclipse/apogy/common/converters/ui/wizards/ExportFileSettingsWizardPage.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
<<<<<<< HEAD
 *     Pierre Allard - initial API and implementation
 *     Regent L'Archeveque
 * 
=======
 *     Pierre Allard, 
 *     Regent L'Archeveque,
 *     Sebastien Gemme - initial API and implementation
 *     
>>>>>>> refs/heads/eclipse_pa
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.common.converters.ui.wizards;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.apogy.common.converters.IFileExporter;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.Text;

public class ExportFileSettingsWizardPage extends WizardPage {
	private final IFileExporter iFileExporter;

	private Composite container;
	private TableViewer availableExtensionsViewer;
	private TableViewer toExportExtensionsViewer;
	private Text txtDescription;

	private Button addButton;
	private Button removeButton;

	private final List<String> availableExtensions = new ArrayList<String>();
	private final List<String> toExportExtensions = new ArrayList<String>();

	private final List<String> selectedExtensions = new ArrayList<String>();

	public ExportFileSettingsWizardPage(String pageName, IFileExporter iFileExporter, ExportToFileWizard wizard) {
		super(pageName);
		setDescription("Select the file extension to use for the export.");
		this.iFileExporter = iFileExporter;

		this.availableExtensions.addAll(iFileExporter.getSupportedFileExtensions());
	}

	@Override
	public void createControl(Composite parent) {
		this.container = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout(3, false);
		this.container.setLayout(layout);

		Label lblAvailableExtensions = new Label(this.container, SWT.NONE);
		lblAvailableExtensions.setText("Available Extensions");
		lblAvailableExtensions.setAlignment(SWT.CENTER);
		lblAvailableExtensions.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true, false));

		// Filler
		new Label(this.container, SWT.NONE);

		Label lblToExportExtensions = new Label(this.container, SWT.NONE);
		lblToExportExtensions.setText("Extension To Export");
		lblToExportExtensions.setAlignment(SWT.CENTER);
		lblToExportExtensions.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true, false));

		// Available Extension Viewer
		this.availableExtensionsViewer = new TableViewer(this.container, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
		Table table = this.availableExtensionsViewer.getTable();
		GridData gd_table = new GridData(SWT.LEFT, SWT.FILL, false, true, 1, 2);
		gd_table.minimumWidth = 300;
		gd_table.widthHint = 300;
		table.setLayoutData(gd_table);
		table.setLinesVisible(true);
		ColumnViewerToolTipSupport.enableFor(this.availableExtensionsViewer);
		this.availableExtensionsViewer.addSelectionChangedListener(new ISelectionChangedListener() {

			@Override
			public void selectionChanged(SelectionChangedEvent event) {
				ExportFileSettingsWizardPage.this.addButton.setEnabled(true);
				ExportFileSettingsWizardPage.this.removeButton.setEnabled(false);

				if (event.getSelection() instanceof IStructuredSelection) {
					ExportFileSettingsWizardPage.this.selectedExtensions.clear();

					IStructuredSelection iStructuredSelection = (IStructuredSelection) event.getSelection();
					@SuppressWarnings("unchecked")
					Iterator<Object> it = iStructuredSelection.iterator();
					while (it.hasNext()) {
						Object item = it.next();
						if (item instanceof String) {
							String extension = (String) item;
							ExportFileSettingsWizardPage.this.selectedExtensions.add(extension);

							String description = ExportFileSettingsWizardPage.this.iFileExporter
									.getDescription(extension);
							if (description == null)
								description = "No description available.";
							ExportFileSettingsWizardPage.this.txtDescription.setText(description);
						}
					}
				}
			}
		});

		TableViewerColumn tableViewerColumnItem_Name = new TableViewerColumn(this.availableExtensionsViewer, SWT.NONE);
		TableColumn trclmnItemName = tableViewerColumnItem_Name.getColumn();
		trclmnItemName.setText("Extension");
		trclmnItemName.setWidth(100);

		this.availableExtensionsViewer.setContentProvider(new ArrayContentProvider());
		this.availableExtensionsViewer.setLabelProvider(new CustomLabelProvider());
		this.availableExtensionsViewer.setInput(this.availableExtensions);

		// Add Button
		this.addButton = new Button(this.container, SWT.PUSH);
		this.addButton.setText("->");
		this.addButton.setEnabled(false);
		this.addButton.addSelectionListener(new SelectionListener() {

			@Override
			public void widgetSelected(SelectionEvent arg0) {
				ExportFileSettingsWizardPage.this.toExportExtensions
						.addAll(ExportFileSettingsWizardPage.this.selectedExtensions);
				ExportFileSettingsWizardPage.this.availableExtensions
						.removeAll(ExportFileSettingsWizardPage.this.selectedExtensions);

				ExportFileSettingsWizardPage.this.selectedExtensions.clear();

				ExportFileSettingsWizardPage.this.availableExtensionsViewer
						.setInput(ExportFileSettingsWizardPage.this.availableExtensions);
				ExportFileSettingsWizardPage.this.availableExtensionsViewer.refresh();

				ExportFileSettingsWizardPage.this.toExportExtensionsViewer
						.setInput(ExportFileSettingsWizardPage.this.toExportExtensions);
				ExportFileSettingsWizardPage.this.toExportExtensionsViewer.refresh();

				setPageComplete(!ExportFileSettingsWizardPage.this.toExportExtensions.isEmpty());
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent arg0) {
			}
		});

		// Available Extension Viewer
		this.toExportExtensionsViewer = new TableViewer(this.container, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
		Table table1 = this.toExportExtensionsViewer.getTable();
		GridData gd_table1 = new GridData(SWT.LEFT, SWT.FILL, false, true, 1, 2);
		gd_table1.minimumWidth = 300;
		gd_table1.widthHint = 300;
		table1.setLayoutData(gd_table1);
		table1.setLinesVisible(true);
		ColumnViewerToolTipSupport.enableFor(this.toExportExtensionsViewer);
		this.toExportExtensionsViewer.addSelectionChangedListener(new ISelectionChangedListener() {

			@Override
			public void selectionChanged(SelectionChangedEvent event) {
				ExportFileSettingsWizardPage.this.addButton.setEnabled(false);
				ExportFileSettingsWizardPage.this.removeButton.setEnabled(true);

				if (event.getSelection() instanceof IStructuredSelection) {
					ExportFileSettingsWizardPage.this.selectedExtensions.clear();

					IStructuredSelection iStructuredSelection = (IStructuredSelection) event.getSelection();
					@SuppressWarnings("unchecked")
					Iterator<Object> it = iStructuredSelection.iterator();
					while (it.hasNext()) {
						Object item = it.next();
						if (item instanceof String) {
							String extension = (String) item;
							ExportFileSettingsWizardPage.this.selectedExtensions.add(extension);

							String description = ExportFileSettingsWizardPage.this.iFileExporter
									.getDescription(extension);
							if (description == null)
								description = "No description available.";
							ExportFileSettingsWizardPage.this.txtDescription.setText(description);
						}
					}
				}
			}
		});

		TableViewerColumn tableViewerColumnItem_Name1 = new TableViewerColumn(this.toExportExtensionsViewer, SWT.NONE);
		TableColumn trclmnItemName1 = tableViewerColumnItem_Name1.getColumn();
		trclmnItemName1.setText("Extension");
		trclmnItemName1.setWidth(100);

		this.toExportExtensionsViewer.setContentProvider(new ArrayContentProvider());
		this.toExportExtensionsViewer.setLabelProvider(new CustomLabelProvider());
		this.toExportExtensionsViewer.setInput(this.toExportExtensions);

		// RemoveSS Button
		this.removeButton = new Button(this.container, SWT.PUSH);
		this.removeButton.setText("<-");
		this.removeButton.setEnabled(false);
		this.removeButton.addSelectionListener(new SelectionListener() {
			@Override
			public void widgetSelected(SelectionEvent arg0) {
				ExportFileSettingsWizardPage.this.toExportExtensions
						.removeAll(ExportFileSettingsWizardPage.this.selectedExtensions);
				ExportFileSettingsWizardPage.this.availableExtensions
						.addAll(ExportFileSettingsWizardPage.this.selectedExtensions);

				ExportFileSettingsWizardPage.this.selectedExtensions.clear();

				ExportFileSettingsWizardPage.this.availableExtensionsViewer
						.setInput(ExportFileSettingsWizardPage.this.availableExtensions);
				ExportFileSettingsWizardPage.this.toExportExtensionsViewer
						.setInput(ExportFileSettingsWizardPage.this.toExportExtensions);

				setPageComplete(!ExportFileSettingsWizardPage.this.toExportExtensions.isEmpty());
			}

			@Override
			public void widgetDefaultSelected(SelectionEvent arg0) {
			}
		});

		Label lblDescription = new Label(this.container, SWT.NONE);
		lblDescription.setText("Description :");

		// Filler
		new Label(this.container, SWT.NONE);
		new Label(this.container, SWT.NONE);

		this.txtDescription = new Text(this.container, SWT.MULTI);
		GridData txtDescriptionGridData = new GridData(SWT.FILL, SWT.FILL, true, true, 3, 1);
		txtDescriptionGridData.minimumHeight = 100;
		txtDescriptionGridData.heightHint = 100;
		this.txtDescription.setLayoutData(txtDescriptionGridData);

		setControl(this.container);
	}

	@Override
	public boolean isPageComplete() {
		return !this.toExportExtensions.isEmpty();
	}

	public List<String> getRequestedFileExtension() {
		return this.toExportExtensions;
	}

	private class CustomLabelProvider extends ColumnLabelProvider {
		@Override
		public String getText(Object element) {
			if (element instanceof String)
				return (String) element;
			else
				return null;
		}

	}
}