TrimBarRenderer.java

/*******************************************************************************
 * Copyright (c) 2011 Kai Toedter 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:
 *     Kai Toedter - initial API and implementation
 ******************************************************************************/

package com.toedter.e4.ui.workbench.renderers.swt;

import org.eclipse.e4.ui.model.application.ui.MElementContainer;
import org.eclipse.e4.ui.model.application.ui.MUIElement;
import org.eclipse.e4.ui.model.application.ui.SideValue;
import org.eclipse.e4.ui.model.application.ui.basic.MTrimBar;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.CoolItem;
import org.eclipse.swt.widgets.Shell;

import com.toedter.e4.ui.workbench.generic.GenericRenderer;
import com.toedter.e4.ui.workbench.swt.layouts.SimpleTrimLayout;

@SuppressWarnings("restriction")
public class TrimBarRenderer extends GenericRenderer {

	@Override
	public void createWidget(MUIElement element, MElementContainer<MUIElement> parent) {
		if (!(element instanceof MTrimBar)) {
			return;
		}
		// CoolBar coolBar = new CoolBar((Shell) parent.getWidget(), SWT.NONE);
		Composite coolBar = new Composite((Shell) parent.getWidget(), SWT.NONE);

		// coolBar.setLocked(true);
		// CoolItem item = new CoolItem(coolBar, SWT.NONE);
		final MTrimBar trimBar = (MTrimBar) element;

		element.setWidget(coolBar);

		switch (trimBar.getSide().getValue()) {
		case SideValue.TOP_VALUE:
			coolBar.setLayoutData(SimpleTrimLayout.TOP);
			coolBar.setLayout(new RowLayout(SWT.HORIZONTAL));
			break;
		case SideValue.BOTTOM_VALUE:
			coolBar.setLayoutData(SimpleTrimLayout.BOTTOM);
			coolBar.setLayout(new RowLayout(SWT.HORIZONTAL));
			break;
		case SideValue.LEFT_VALUE:
			coolBar.setLayoutData(SimpleTrimLayout.LEFT);
			coolBar.setLayout(new RowLayout(SWT.VERTICAL));
			break;
		case SideValue.RIGHT_VALUE:
			coolBar.setLayoutData(SimpleTrimLayout.RIGHT);
			coolBar.setLayout(new RowLayout(SWT.VERTICAL));
			break;
		}
	}

	@Override
	public void processContents(MElementContainer<MUIElement> container) {
		// This is not an optimal solution but works for resetting the trim area

		// System.out.println("TrimBarRenderer.processContents()");
		if (!((MUIElement) container instanceof MTrimBar && container.getWidget() instanceof Composite)) {
			return;
		}
		Composite coolBar = (Composite) container.getWidget();

		if (container.getChildren() == null || container.getChildren().size() == 0) {
			for (Control control : coolBar.getChildren()) {
				control.dispose();
			}
		}
		coolBar.layout();
		coolBar.getParent().layout();
	}

	private void calcSize(CoolItem item) {
		Control control = item.getControl();
		Point pt = control.computeSize(SWT.DEFAULT, SWT.DEFAULT);
		pt = item.computeSize(pt.x, pt.y);
		item.setSize(pt);
	}

}