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/*****************************************************************************
* 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:
* Nicolas Guyomar (Mia-Software) - initial API and implementation
* Nicolas Guyomar (Mia-Software) - Bug 334546 - [celleditors] no border on Text field
* Nicolas Bros (Mia-Software) - Bug 334539 - [celleditors] change listener
* Nicolas Guyomar (Mia-Software) - Bug 349574 - EMF Facet Ecore String composite textField cannot be disabled
*****************************************************************************/
package org.eclipse.papyrus.emf.facet.widgets.celleditors.ecore.composite;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.papyrus.emf.facet.widgets.celleditors.AbstractCellEditorComposite;
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.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.FillLayout;
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;
import org.eclipse.swt.widgets.Text;
public abstract class StringComposite<T> extends AbstractCellEditorComposite<T> {
/** the control that is used to edit the contents of the cell */
private Text textField = null;
private final Composite parentControl;
/** the original value of the cell **/
private IConverter<T> converter;
protected static final Color RED = new Color(Display.getCurrent(), 255, 192, 192);
protected static final Color WHITE = Display.getCurrent().getSystemColor(
SWT.COLOR_LIST_BACKGROUND);
public StringComposite(final Composite parent, final int style) {
super(parent);
setLayout(new FillLayout());
this.parentControl = parent;
this.textField = new Text(this, style);
this.textField.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)) {
if (StringComposite.this.getTextField().getEditable()) {
StringComposite.this.commit();
}
} else if (event.keyCode == SWT.ESC && event.stateMask == 0) {
// Escape key pressed
close();
}
}
@Override
public void keyReleased(final KeyEvent e) {
if (!StringComposite.this.validate(StringComposite.this.getTextField().getText())
.isOK()) {
StringComposite.this.getTextField().setBackground(StringComposite.RED);
} else {
StringComposite.this.getTextField().setBackground(StringComposite.WHITE);
}
super.keyReleased(e);
}
});
final Listener clickListener = new Listener() {
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt. widgets.Event)
*/
public void handleEvent(final Event event) {
if (event.widget instanceof Control) {
Control control = (Control) event.widget;
if (control.getShell() == StringComposite.this.getParentControl().getShell()) {
if (event.widget != StringComposite.this.getTextField()) {
StringComposite.this.commit();
}
}
}
}
};
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.textField.addModifyListener(new ModifyListener() {
public void modifyText(final ModifyEvent e) {
fireChanged();
}
});
this.textField.forceFocus();
}
public StringComposite(final Composite parent) {
this(parent, SWT.NONE);
}
protected void commit() {
if (getValidator().validate(getValue()).isOK()) {
fireCommit();
}
}
@Override
public void setEnabled(final boolean enabled) {
this.textField.setEnabled(enabled);
super.setEnabled(enabled);
}
public boolean getEditable() {
return this.textField.getEditable();
}
public void setValue(final T value) {
if (value == null) {
this.textField.setText(""); //$NON-NLS-1$
} else {
String strValue = getConverter().toString(value);
this.textField.setText(strValue);
this.textField.setSelection(0, strValue.length());
}
}
public String getText() {
return this.textField.getText();
}
protected Text getTextField() {
return this.textField;
}
protected Composite getParentControl() {
return this.parentControl;
}
public T getValue() {
return this.getConverter().toObject(this.getText());
}
private IConverter<T> getConverter() {
if (this.converter == null) {
this.converter = this.initConverter();
}
return this.converter;
}
public abstract IConverter<T> initConverter();
public interface IConverter<T> {
public T toObject(String string);
public String toString(T object);
}
public abstract IStatus validate(String string);
}
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