bundles/org.eclipse.e4.tools.emf.ui/src/org/eclipse/e4/tools/emf/ui/internal/common/component/virtual/VWindowTrimEditor.java

/*******************************************************************************
 * Copyright (c) 2010 BestSolution.at and others.
 * 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:
 *     Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation
 ******************************************************************************/
package org.eclipse.e4.tools.emf.ui.internal.common.component.virtual;

import java.util.List;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.value.WritableValue;
import org.eclipse.e4.tools.emf.ui.common.component.AbstractComponentEditor;
import org.eclipse.e4.tools.emf.ui.internal.common.ComponentLabelProvider;
import org.eclipse.e4.tools.emf.ui.internal.common.ModelEditor;
import org.eclipse.e4.tools.emf.ui.internal.common.VirtualEntry;
import org.eclipse.e4.ui.model.application.ui.basic.MBasicFactory;
import org.eclipse.e4.ui.model.application.ui.basic.MTrimBar;
import org.eclipse.e4.ui.model.application.ui.basic.impl.BasicPackageImpl;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.databinding.EMFDataBindingContext;
import org.eclipse.emf.edit.command.AddCommand;
import org.eclipse.emf.edit.command.RemoveCommand;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
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.Display;
import org.eclipse.swt.widgets.Label;

public class VWindowTrimEditor extends AbstractComponentEditor {
	private Composite composite;
	private EMFDataBindingContext context;
	private ModelEditor editor;
	private TableViewer viewer;

	public VWindowTrimEditor(EditingDomain editingDomain, ModelEditor editor) {
		super(editingDomain);
		this.editor = editor;
	}

	@Override
	public Image getImage(Object element, Display display) {
		return null;
	}

	@Override
	public String getLabel(Object element) {
		return "Window Trims";
	}

	@Override
	public String getDetailLabel(Object element) {
		return null;
	}

	@Override
	public String getDescription(Object element) {
		return "Window Trims Bla Bla Bla Bla Bla";
	}

	@Override
	public Composite getEditor(Composite parent, Object object) {
		if( composite == null ) {
			context = new EMFDataBindingContext();
			composite = createForm(parent,context, getMaster());
		}
		VirtualEntry<?> o = (VirtualEntry<?>)object;
		viewer.setInput(o.getList());
		getMaster().setValue(o.getOriginalParent());
		return composite;
	}

	private Composite createForm(Composite parent, EMFDataBindingContext context,
			WritableValue master) {
		parent = new Composite(parent,SWT.NONE);
		parent.setLayout(new GridLayout(3, false));

		{
			Label l = new Label(parent, SWT.NONE);
			l.setText("Controls");
			l.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));

			viewer = new TableViewer(parent);
			ObservableListContentProvider cp = new ObservableListContentProvider();
			viewer.setContentProvider(cp);
			viewer.setLabelProvider(new ComponentLabelProvider(editor));
			
			GridData gd = new GridData(GridData.FILL_HORIZONTAL);
			gd.heightHint = 300;
			viewer.getControl().setLayoutData(gd);
			
			Composite buttonComp = new Composite(parent, SWT.NONE);
			buttonComp.setLayoutData(new GridData(GridData.FILL,GridData.END,false,false));
			GridLayout gl = new GridLayout();
			gl.marginLeft=0;
			gl.marginRight=0;
			gl.marginWidth=0;
			gl.marginHeight=0;
			buttonComp.setLayout(gl);
			
			Button b = new Button(buttonComp, SWT.PUSH | SWT.FLAT);
			b.setText("Add Trim");
			b.setImage(getImage(b.getDisplay(), TABLE_ADD_IMAGE));
			b.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
			b.addSelectionListener(new SelectionAdapter() {
				@Override
				public void widgetSelected(SelectionEvent e) {
					MTrimBar handler = MBasicFactory.INSTANCE.createTrimBar();
					Command cmd = AddCommand.create(getEditingDomain(), getMaster().getValue(), BasicPackageImpl.Literals.TRIMMED_WINDOW__TRIM_BARS, handler);
					
					if( cmd.canExecute() ) {
						getEditingDomain().getCommandStack().execute(cmd);
						editor.setSelection(handler);
					}
				}
			});

			b = new Button(buttonComp, SWT.PUSH | SWT.FLAT);
			b.setText("Remove");
			b.setImage(getImage(b.getDisplay(), TABLE_DELETE_IMAGE));
			b.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
			b.addSelectionListener(new SelectionAdapter() {
				@Override
				public void widgetSelected(SelectionEvent e) {
					if( ! viewer.getSelection().isEmpty() ) {
						List<?> trimElements = ((IStructuredSelection)viewer.getSelection()).toList();
						Command cmd = RemoveCommand.create(getEditingDomain(), getMaster().getValue(), BasicPackageImpl.Literals.TRIMMED_WINDOW__TRIM_BARS, trimElements);
						if( cmd.canExecute() ) {
							getEditingDomain().getCommandStack().execute(cmd);
						}
					}
				}
			});
		}

		return parent;
	}

	@Override
	public IObservableList getChildList(Object element) {
		// TODO Auto-generated method stub
		return null;
	}

}