/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.nodeEditor.selection;
import jetbrains.mps.openapi.editor.EditorComponent;
import jetbrains.mps.openapi.editor.selection.Selection;
import jetbrains.mps.openapi.editor.selection.SelectionListener;
import jetbrains.mps.openapi.editor.selection.SingularSelection;
public abstract class SingularSelectionListenerAdapter implements SelectionListener {
@Override
public void selectionChanged(EditorComponent editorComponent, Selection oldSelection, Selection newSelection) {
if (oldSelection == newSelection) {
return;
}
if (oldSelection instanceof SingularSelection) {
selectionChangedFrom(editorComponent, (SingularSelection) oldSelection);
}
if (newSelection instanceof SingularSelection) {
selectionChangedTo(editorComponent, (SingularSelection) newSelection);
}
}
protected void selectionChangedFrom(EditorComponent editorComponent, SingularSelection oldSelection) {
}
protected void selectionChangedTo(EditorComponent editorComponent, SingularSelection newSelection) {
}
}