/*
* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2006 The ObjectStyle Group and individual authors of the
* software. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowlegement: "This product includes software
* developed by the ObjectStyle Group (http://objectstyle.org/)." Alternately,
* this acknowlegement may appear in the software itself, if and wherever such
* third-party acknowlegements normally appear.
*
* 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse or
* promote products derived from this software without prior written permission.
* For written permission, please contact andrus@objectstyle.org.
*
* 5. Products derived from this software may not be called "ObjectStyle" nor
* may "ObjectStyle" appear in their names without prior written permission of
* the ObjectStyle Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* OBJECTSTYLE GROUP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals on
* behalf of the ObjectStyle Group. For more information on the ObjectStyle
* Group, please see <http://objectstyle.org/>.
*
*/
package org.objectstyle.wolips.eomodeler.utils;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.TableItem;
import org.objectstyle.wolips.baseforuiplugins.utils.ErrorUtils;
import org.objectstyle.wolips.eomodeler.core.kvc.CachingKeyPath;
import org.objectstyle.wolips.eomodeler.core.kvc.Key;
import org.objectstyle.wolips.eomodeler.core.kvc.KeyPath;
public class TablePropertyCellModifier implements ICellModifier, ISelectionChangedListener {
private TableViewer myTableViewer;
private ISelection mySelection;
private Map myKeys;
public TablePropertyCellModifier(TableViewer _tableViewer) {
myTableViewer = _tableViewer;
myTableViewer.addSelectionChangedListener(this);
myKeys = new HashMap();
}
public TableViewer getTableViewer() {
return myTableViewer;
}
public void selectionChanged(SelectionChangedEvent _event) {
mySelection = _event.getSelection();
}
public boolean canModify(Object _element, String _property) {
boolean canModify = false;
if (mySelection instanceof IStructuredSelection) {
IStructuredSelection selection = (IStructuredSelection) mySelection;
if (selection.size() == 1 && _element == selection.getFirstElement()) {
try {
canModify = _canModify(_element, _property);
} catch (Throwable t) {
t.printStackTrace();
canModify = false;
}
}
}
return canModify;
}
protected boolean _canModify(Object _element, String _property) throws Throwable {
return true;
}
public Object getValue(Object _element, String _property) {
Object value = new Key(_property).getValue(_element);
return value;
}
public void modify(Object _element, String _property, Object _value) {
try {
TableItem tableItem = (TableItem) _element;
Object obj = tableItem.getData();
if (!_modify(obj, _property, _value)) {
KeyPath keyPath = (KeyPath) myKeys.get(_property);
if (keyPath == null) {
keyPath = new CachingKeyPath(_property);
myKeys.put(_property, keyPath);
}
keyPath.setValue(obj, _value);
}
myTableViewer.refresh(obj);
} catch (Throwable t) {
ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), t);
}
}
protected boolean _modify(Object _element, String _property, Object _value) throws Throwable {
return false;
}
}