/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
* 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:
* Gregoire Dupe (Mia-Software) - initial API and implementation
* Nicolas Bros (Mia-Software) - Bug 339664 - org.eclipse.emf.facet.widgets.celleditors API cleaning
* Nicolas Bros (Mia-Software) - Bug 334539 - [celleditors] change listener
* Gregoire Dupe (Mia-Software) - Bug 344563 - NPE with Enum Editor
* Nicolas Guyomar (Mia-Software) - Bug 344563 - NPE with Enum Editor
* Vincent Lorenzo (CEA-LIST) - Bug 344461: [Table Editor] Papyrus Table Editor needs to provides editors for TableInstance
*****************************************************************************/
package org.eclipse.papyrus.uml.table.widget.celleditors.composite;
import org.eclipse.emf.facet.util.core.Logger;
import org.eclipse.emf.facet.widgets.celleditors.AbstractCellEditorComposite;
import org.eclipse.emf.facet.widgets.celleditors.internal.Activator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
/**
*
* This class is a copy of the internal class : org.eclipse.emf.facet.widgets.celleditors.internal.core.composite
* I duplicate it in order to extend it with EnumerationComposite without have problems if there is change in the original class.
*
* @param <T>
*/
public abstract class EnumComposite<T> extends AbstractCellEditorComposite<T> {
/** the control that is used to edit the contents of the cell */
private Combo combo = null;
private final Composite parentControl;
private T lastValue;
public EnumComposite(final Composite parent) {
super(parent);
setLayout(new FillLayout());
this.parentControl = parent;
this.combo = new Combo(this, SWT.NONE);
final Listener clickListener = new Listener() {
public void handleEvent(final Event event) {
if(event.widget instanceof Control) {
Control control = (Control)event.widget;
if(control.getShell() == EnumComposite.this.getParentControl().getShell()) {
if(event.widget != EnumComposite.this.getCombo()) {
EnumComposite.this.commit();
}
}
}
}
};
this.combo.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent e) {
fireChanged();
}
});
this.combo.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(final KeyEvent event) {
// Enter key pressed
if((event.keyCode == SWT.CR && event.stateMask == 0) || (event.keyCode == SWT.KEYPAD_CR && event.stateMask == 0)) {
commit();
} else if(event.keyCode == SWT.ESC && event.stateMask == 0) {
// Escape key pressed
close();
}
}
});
Display.getDefault().addFilter(SWT.MouseDown, clickListener);
// this listener is only here to remove
// the other listener from the Display
addDisposeListener(new DisposeListener() {
public void widgetDisposed(final DisposeEvent e) {
Display.getDefault().removeFilter(SWT.MouseDown, clickListener);
}
});
this.combo.forceFocus();
}
protected void commit() {
fireCommit();
}
public void setValue(final T value) {
this.lastValue = value;
if(value == null) {
this.combo.setText(""); //$NON-NLS-1$
} else {
String strValue = getEnumString(value);
this.combo.setText(strValue);
}
}
public T getValue() {
try {
this.lastValue = this.getEnumValue(this.combo.getText());
} catch (Exception e) {
Logger.logError(e, Activator.getDefault());
}
return this.lastValue;
}
protected abstract T getEnumValue(String text);
protected abstract String getEnumString(T value);
protected abstract String[] getEnumStrings();
public Combo getCombo() {
return this.combo;
}
protected Composite getParentControl() {
return this.parentControl;
}
}