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/*******************************************************************************
* Copyright (c) 2008, 2009 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tm.internal.tcf.debug.ui.preferences;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.jface.fieldassist.FieldDecoration;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.jface.preference.IntegerFieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
/**
* An {@link IntegerFieldEditor} with field decoration.
*
* @since 1.1
*/
public class DecoratingIntegerFieldEditor extends IntegerFieldEditor {
private ControlDecoration fDecoration;
protected DecoratingIntegerFieldEditor() {
}
/**
* Creates an integer field editor.
*
* @param name
* the name of the preference this field editor works on
* @param labelText
* the label text of the field editor
* @param parent
* the parent of the field editor's control
*/
public DecoratingIntegerFieldEditor(String name, String labelText,
Composite parent) {
super(name, labelText, parent);
}
/**
* Creates an integer field editor.
*
* @param name
* the name of the preference this field editor works on
* @param labelText
* the label text of the field editor
* @param parent
* the parent of the field editor's control
* @param textLimit
* the maximum number of characters in the text.
*/
public DecoratingIntegerFieldEditor(String name, String labelText,
Composite parent, int textLimit) {
super(name, labelText, parent, textLimit);
}
@Override
public Text getTextControl(Composite parent) {
Text control = super.getTextControl(parent);
if (fDecoration == null) {
fDecoration = new ControlDecoration(control, SWT.LEFT | SWT.TOP);
FieldDecoration errorDecoration = FieldDecorationRegistry
.getDefault().getFieldDecoration(
FieldDecorationRegistry.DEC_ERROR);
fDecoration.setImage(errorDecoration.getImage());
fDecoration.setDescriptionText(getErrorMessage());
// validate on focus gain
control.addFocusListener(new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
refreshValidState();
}
});
}
return control;
}
@Override
protected void showErrorMessage(String msg) {
super.showErrorMessage(msg);
if (fDecoration != null) {
fDecoration.setDescriptionText(msg);
fDecoration.show();
}
}
@Override
protected void clearErrorMessage() {
super.clearErrorMessage();
if (fDecoration != null) {
fDecoration.hide();
}
}
}
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