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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;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.uiDesigner.componentTree.ComponentPtr;
import com.intellij.uiDesigner.componentTree.ComponentSelectionListener;
import com.intellij.uiDesigner.designSurface.GuiEditor;
import com.intellij.uiDesigner.radComponents.RadComponent;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.Stack;
/**
* This class implements Ctrl+W / Ctrl+Shift+W functionality in the GuiEditor
*
* @author Anton Katilin
* @author Vladimir Kondratyev
*/
public final class SelectionState{
private final Stack<ComponentPtr[]> mySelectionHistory;
/** We do not need to handle our own events */
private boolean myInsideChange;
public SelectionState(@NotNull final GuiEditor editor) {
mySelectionHistory = new Stack<ComponentPtr[]>();
editor.addComponentSelectionListener(new MyComponentSelectionListener());
}
public void setInsideChange(final boolean insideChange){
ApplicationManager.getApplication().assertIsDispatchThread();
myInsideChange = insideChange;
}
public Stack<ComponentPtr[]> getSelectionHistory() {
return mySelectionHistory;
}
public static ComponentPtr[] getSelection(final GuiEditor editor){
final ArrayList<RadComponent> selection = FormEditingUtil.getAllSelectedComponents(editor);
final ComponentPtr[] ptrs = new ComponentPtr[selection.size()];
for(int i = selection.size() - 1; i >= 0; i--){
ptrs[i] = new ComponentPtr(editor, selection.get(i));
}
return ptrs;
}
public static void restoreSelection(final GuiEditor editor, final ComponentPtr[] ptrs) {
FormEditingUtil.clearSelection(editor.getRootContainer());
for(int i = ptrs.length - 1; i >= 0; i--){
final ComponentPtr ptr = ptrs[i];
ptr.validate();
if(ptr.isValid()){
ptr.getComponent().setSelected(true);
}
}
}
private final class MyComponentSelectionListener implements ComponentSelectionListener{
public void selectedComponentChanged(final GuiEditor source) {
if(myInsideChange){ // do not react on own events
return;
}
mySelectionHistory.clear();
mySelectionHistory.push(getSelection(source));
}
}
}
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