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/*******************************************************************************
* Copyright (c) 2011 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.tcf.te.tcf.filesystem.ui.internal.celleditor;
import org.eclipse.jface.viewers.ICellEditorListener;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.window.DefaultToolTip;
import org.eclipse.jface.window.ToolTip;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Control;
import org.eclipse.tcf.te.tcf.filesystem.ui.activator.UIPlugin;
import org.eclipse.tcf.te.tcf.filesystem.ui.internal.ImageConsts;
/**
* FSCellListener is an <code>ICellEditorListener</code> that listens to the modification event and displays
* error messages in a tool tip when the new name entered is not valid.
*/
public class FSCellListener implements ICellEditorListener {
// The cell editor used to enter the new name for renaming.
private TextCellEditor editor;
// The tool tip used to display the error message.
private DefaultToolTip tooltip;
/**
* Create an FSCellListener using the specified cell editor.
*
* @param editor The cell editor
*/
public FSCellListener(TextCellEditor editor) {
this.editor = editor;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ICellEditorListener#applyEditorValue()
*/
@Override
public void applyEditorValue() {
disposeToolTip();
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ICellEditorListener#cancelEditor()
*/
@Override
public void cancelEditor() {
disposeToolTip();
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ICellEditorListener#editorValueChanged(boolean, boolean)
*/
@Override
public void editorValueChanged(boolean oldValidState, boolean newValidState) {
if (!newValidState) {
// If it is an invalid input, then display a tool tip showing the error.
if (tooltip == null) {
tooltip = new DefaultToolTip(editor.getControl(), ToolTip.RECREATE, true);
tooltip.setImage(UIPlugin.getImage(ImageConsts.ERROR_IMAGE));
}
tooltip.setText(editor.getErrorMessage());
Control control = editor.getControl();
Point pOnScr = control.getSize();
pOnScr.x = 0;
tooltip.show(pOnScr);
}
else {
// Dispose the tool tip if it is valid.
disposeToolTip();
}
}
/**
* Dispose the tool tip used to display error message.
*/
private void disposeToolTip() {
if (tooltip != null) {
tooltip.hide();
tooltip = null;
}
}
}
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