bundles/org.eclipse.ui.views.properties.tabbed/src/org/eclipse/ui/internal/views/properties/tabbed/view/TabbedPropertyComposite.java

/*******************************************************************************
 * Copyright (c) 2001, 2006 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.views.properties.tabbed.view;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
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.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory;


/**
 * Composite responsible for drawing the tabbed property sheet page.
 * 
 * @author Anthony Hunter
 */
public class TabbedPropertyComposite
	extends Composite {

	private TabbedPropertySheetWidgetFactory factory;

	private Composite mainComposite;

	private Composite leftComposite;

	private ScrolledComposite scrolledComposite;

	private Composite tabComposite;

	private TabbedPropertyTitle title;

	private TabbedPropertyList listComposite;

	private boolean gainedFocus;

	private boolean displayTitle;

	/**
	 * Constructor for a TabbedPropertyComposite
	 * 
	 * @param parent
	 *            the parent widget.
	 * @param factory
	 *            the widget factory.
	 * @param displayTitle
	 *            if <code>true</code>, then the title bar will be displayed.
	 */
	public TabbedPropertyComposite(Composite parent,
			TabbedPropertySheetWidgetFactory factory, boolean displayTitle) {
		super(parent, SWT.NO_FOCUS);
		this.factory = factory;
		this.displayTitle = displayTitle;

		createMainComposite();
	}

	/**
	 * Create the main composite.
	 */
	protected void createMainComposite() {
		mainComposite = factory.createComposite(this, SWT.NO_FOCUS);
		mainComposite.setLayout(new FormLayout());
		FormData formData = new FormData();
		formData.left = new FormAttachment(0, 0);
		formData.right = new FormAttachment(100, 0);
		formData.top = new FormAttachment(0, 0);
		formData.bottom = new FormAttachment(100, 0);
		mainComposite.setLayoutData(formData);

		createMainContents();

		mainComposite.addFocusListener(new FocusListener() {

			public void focusGained(FocusEvent e) {
				gainedFocus = true;
				mainComposite.redraw();
			}

			public void focusLost(FocusEvent e) {
				gainedFocus = false;
				mainComposite.redraw();
			}
		});
		mainComposite.addPaintListener(new PaintListener() {

			public void paintControl(PaintEvent e) {
				if (gainedFocus) {
					Rectangle r = getClientArea();
					e.gc.drawFocus(0, 0, r.width, r.height);
				}
			}
		});
	}

	/**
	 * Create the contents in the main composite.
	 */
	protected void createMainContents() {
		leftComposite = factory.createComposite(mainComposite, SWT.NO_FOCUS);
		leftComposite.setLayout(new FormLayout());

		scrolledComposite = factory.createScrolledComposite(mainComposite, SWT.H_SCROLL
			| SWT.V_SCROLL | SWT.NO_FOCUS);
		scrolledComposite.setLayout(new FormLayout());

		FormData formData = new FormData();
		formData.left = new FormAttachment(leftComposite, 0);
		formData.right = new FormAttachment(100, 0);
		formData.top = new FormAttachment(0, 0);
		formData.bottom = new FormAttachment(100, 0);
		scrolledComposite.setLayoutData(formData);

		formData = new FormData();
		formData.left = new FormAttachment(0, 0);
		formData.right = new FormAttachment(scrolledComposite, 0);
		formData.top = new FormAttachment(0, 0);
		formData.bottom = new FormAttachment(100, 0);
		leftComposite.setLayoutData(formData);

		final Composite rightComposite = factory.createComposite(scrolledComposite,
			SWT.NO_FOCUS);
		rightComposite.setLayout(new FormLayout());
		FormLayout formLayout = new FormLayout();
		formLayout.marginHeight = 0;
		formLayout.marginWidth = 0;
		rightComposite.setLayout(formLayout);

		scrolledComposite.setContent(rightComposite);
		scrolledComposite.setAlwaysShowScrollBars(false);
		scrolledComposite.setExpandVertical(true);
		scrolledComposite.setExpandHorizontal(true);

		listComposite = new TabbedPropertyList(leftComposite, factory);
		formData = new FormData();
		formData.left = new FormAttachment(0, 0);
		formData.right = new FormAttachment(100, 0);
		formData.top = new FormAttachment(0, 0);
		formData.bottom = new FormAttachment(100, 0);
		listComposite.setLayoutData(formData);

		if (displayTitle) {
			title = new TabbedPropertyTitle(rightComposite, factory);
		}

		tabComposite = factory.createComposite(rightComposite, SWT.NO_FOCUS);
		tabComposite.setLayout(new FormLayout());

		if (displayTitle) {
			FormData data = new FormData();
			data.left = new FormAttachment(0, 0);
			data.right = new FormAttachment(100, 0);
			data.top = new FormAttachment(0, 0);
			title.setLayoutData(data);
		}

		FormData data = new FormData();
		data.left = new FormAttachment(0, 0);
		data.right = new FormAttachment(100, 0);
		if (displayTitle) {
			data.top = new FormAttachment(title, 0);
		} else {
			data.top = new FormAttachment(0, 0);
		}
		data.bottom = new FormAttachment(100, 0);
		tabComposite.setLayoutData(data);

		listComposite.addPaintListener(new PaintListener() {

			public void paintControl(PaintEvent e) {
				Point leftSize = leftComposite.computeSize(SWT.DEFAULT,
					SWT.DEFAULT);
				FormData formData2 = new FormData();
				formData2.left = new FormAttachment(0, leftSize.x);
				formData2.right = new FormAttachment(100, 0);
				formData2.top = new FormAttachment(0, 0);
				formData2.bottom = new FormAttachment(100, 0);
				scrolledComposite.setLayoutData(formData2);
				mainComposite.layout(true);
			}
		});
	}

	/**
	 * Get the tabbed property list, which is the list of tabs on the left hand
	 * side of this composite.
	 * 
	 * @return the tabbed property list.
	 */
	public TabbedPropertyList getList() {
		return listComposite;
	}

	/**
	 * Get the tabbed property title bar.
	 * 
	 * @return the tabbed property title bar or <code>null</code> if not used.
	 */
	public TabbedPropertyTitle getTitle() {
		return title;
	}

	/**
	 * Get the tab composite where sections display their property contents.
	 * 
	 * @return the tab composite.
	 */
	public Composite getTabComposite() {
		return tabComposite;
	}

	/**
	 * Get the scrolled composite which surrounds the title bar and tab
	 * composite.
	 * 
	 * @return the scrolled composite.
	 */
	public ScrolledComposite getScrolledComposite() {
		return scrolledComposite;
	}

	/**
	 * Get the widget factory.
	 * 
	 * @return the widget factory.
	 */
	protected TabbedPropertySheetWidgetFactory getFactory() {
		return factory;
	}

	/**
	 * @see org.eclipse.swt.widgets.Widget#dispose()
	 */
	public void dispose() {
		listComposite.dispose();
		if (displayTitle) {
			title.dispose();
		}
		super.dispose();
	}
}