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Viewing changes to eclox.ui/src/eclox/ui/editor/basic/ComboMultiEditor.java

  • Committer: Package Import Robot
  • Author(s): Graham Inggs
  • Date: 2013-07-07 20:33:10 UTC
  • Revision ID: package-import@ubuntu.com-20130707203310-a44yw80gqtc2s9ob
Tags: upstream-0.10.0
Import upstream version 0.10.0

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eclox.ui/src/eclox/ui/editor/basic/ComboMultiEditor.java
 
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/*******************************************************************************
 
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 * Copyright (C) 2003-2007, 2013, Guillaume Brocker
 
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 * 
 
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 * All rights reserved. This program and the accompanying materials
 
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 * are made available under the terms of the Eclipse Public License v1.0
 
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 * which accompanies this distribution, and is available at
 
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 * http://www.eclipse.org/legal/epl-v10.html
 
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 *
 
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 * Contributors:
 
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 *     Guillaume Brocker - Initial API and implementation
 
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 *
 
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 ******************************************************************************/ 
 
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package eclox.ui.editor.basic;
 
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import org.eclipse.swt.SWT;
 
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import org.eclipse.swt.events.SelectionEvent;
 
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import org.eclipse.swt.events.SelectionListener;
 
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import org.eclipse.swt.layout.FillLayout;
 
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import org.eclipse.swt.widgets.Combo;
 
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import org.eclipse.swt.widgets.Composite;
 
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import org.eclipse.ui.forms.widgets.FormToolkit;
 
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/**
 
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 * Implements a multi editor that presents choices in a combo box.
 
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 * 
 
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 * @author Guillaume Brocker
 
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 */
 
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public class ComboMultiEditor extends MultiEditor {
 
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        /**
 
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         * Implements a selection listener that will handle selection changes in the combo control.
 
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         */
 
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        private class MySelectionListener implements SelectionListener {
 
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                /**
 
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                 * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent)
 
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                 */
 
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                public void widgetDefaultSelected(SelectionEvent e) {
 
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                        widgetSelected(e);
 
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                }
 
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                /**
 
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                 * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
 
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                 */
 
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                public void widgetSelected(SelectionEvent e) {
 
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                        selectState( combo.getItem(combo.getSelectionIndex()) );
 
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                        commit();
 
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                }
 
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        }
 
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        /**
 
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         * the combo control that is the representation of the editor
 
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         */
 
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        Combo combo;
 
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        /**
 
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         * Constructor
 
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         * 
 
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         * @param       states  an array of string representing all posible states
 
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         */
 
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        ComboMultiEditor( String [] states ) {
 
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                super( states );
 
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        }
 
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        /**
 
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         * @see eclox.ui.editor.editors.IEditor#createContent(org.eclipse.swt.widgets.Composite, org.eclipse.ui.forms.widgets.FormToolkit)
 
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         */
 
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        public void createContent(Composite parent, FormToolkit formToolkit) {
 
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                // Pre-condition
 
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                assert combo != null;
 
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                // Creates the combo control.
 
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                combo = new Combo(parent, SWT.DROP_DOWN|SWT.READ_ONLY);
 
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                combo.addSelectionListener( new MySelectionListener() );
 
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                formToolkit.adapt(combo, true, true);
 
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                // Fills the combo with the state names.
 
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                for( int i = 0; i != states.length; ++i ) {
 
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                        combo.add( states[i].getName() );
 
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                }
 
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                combo.setVisibleItemCount(states.length);
 
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                // Installs a layout in the parent composite
 
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                parent.setLayout(new FillLayout());
 
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        }
 
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        /**
 
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         * @see eclox.ui.editor.editors.IEditor#dispose()
 
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         */
 
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        public void dispose() {
 
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                combo = null;
 
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        }
 
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        /**
 
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         * @see eclox.ui.editor.editors.IEditor#grabVerticalSpace()
 
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         */
 
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        public boolean grabVerticalSpace() {
 
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                return false;
 
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        }
 
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        /**
 
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         * @see eclox.ui.editor.basic.MultiEditor#refresh()
 
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         */
 
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        public void refresh() {
 
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                // Pre-condition
 
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                assert combo != null;
 
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                super.refresh();
 
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                // Selectes the string corresponding to the current selection
 
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                State   selection = getSelectionAsState();
 
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                if( selection != null ) {
 
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                        combo.select( combo.indexOf(selection.getName()) );
 
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                }
 
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                else {
 
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                        combo.deselectAll();
 
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                }
 
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        }
 
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        /**
 
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         * @see eclox.ui.editor.editors.IEditor#setEnabled(boolean)
 
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         */
 
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        public void setEnabled(boolean enabled) {
 
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                // Pre-condition
 
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                assert combo != null;
 
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                combo.setEnabled(enabled);
 
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        }
 
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        /**
 
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         * @see eclox.ui.editor.editors.IEditor#setFocus()
 
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         */
 
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        public void setFocus() {
 
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                // Pre-condition
 
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                assert combo != null;
 
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                combo.setFocus();
 
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        }
 
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}