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/*
* Copyright 2000-2009 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 com.intellij.uiDesigner.actions;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.Presentation;
import com.intellij.uiDesigner.FormEditingUtil;
import com.intellij.uiDesigner.SelectionState;
import com.intellij.uiDesigner.componentTree.ComponentPtr;
import com.intellij.uiDesigner.componentTree.ComponentTreeBuilder;
import com.intellij.uiDesigner.designSurface.GuiEditor;
import com.intellij.uiDesigner.propertyInspector.DesignerToolWindowManager;
import java.util.Stack;
/**
* @author Anton Katilin
* @author Vladimir Kondratyev
*/
public final class ShrinkSelectionAction extends AnAction{
public void actionPerformed(final AnActionEvent e) {
final GuiEditor editor = FormEditingUtil.getEditorFromContext(e.getDataContext());
assert editor != null;
final SelectionState selectionState = editor.getSelectionState();
selectionState.setInsideChange(true);
ComponentTreeBuilder builder = DesignerToolWindowManager.getInstance(editor).getComponentTreeBuilder();
builder.beginUpdateSelection();
try{
final Stack<ComponentPtr[]> history = selectionState.getSelectionHistory();
history.pop();
SelectionState.restoreSelection(editor, history.peek());
}
finally{
builder.endUpdateSelection();
selectionState.setInsideChange(false);
}
}
public void update(final AnActionEvent e) {
final Presentation presentation = e.getPresentation();
final GuiEditor editor = FormEditingUtil.getEditorFromContext(e.getDataContext());
if(editor == null){
presentation.setEnabled(false);
return;
}
final Stack<ComponentPtr[]> history = editor.getSelectionState().getSelectionHistory();
presentation.setEnabled(history.size() > 1);
}
}
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