/*
* Copyright 2003-2013 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.actions;
import jetbrains.mps.openapi.editor.EditorComponent;
import jetbrains.mps.openapi.editor.EditorContext;
import jetbrains.mps.openapi.editor.selection.Selection;
import jetbrains.mps.openapi.editor.selection.SelectionListener;
import jetbrains.mps.openapi.editor.selection.SelectionManager;
/**
* User: shatalin
* Date: 6/11/13
*/
public class CursorPositionTracker implements SelectionListener {
private SelectionManager mySelectionManager;
private boolean myHasPosition;
private int myPosition;
public CursorPositionTracker(EditorContext context) {
mySelectionManager = context.getSelectionManager();
mySelectionManager.addSelectionListener(this);
}
public int getPosition() {
return myPosition;
}
public void savePosition(int position) {
myHasPosition = true;
myPosition = position;
}
public void forgetPosition() {
myHasPosition = false;
}
public boolean hasPosition() {
return myHasPosition;
}
public void dispose() {
mySelectionManager.removeSelectionListener(this);
mySelectionManager = null;
}
@Override
public void selectionChanged(EditorComponent editorComponent, Selection oldSelection, Selection newSelection) {
forgetPosition();
}
}