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/*
* Copyright 2000-2012 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.ui;
import com.intellij.openapi.actionSystem.ActionToolbarPosition;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.ui.treeStructure.SimpleNode;
import com.intellij.util.ui.EditableModel;
import com.intellij.util.ui.EditableTreeModel;
import com.intellij.util.ui.ElementProducer;
import com.intellij.util.ui.tree.TreeUtil;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
/**
* @author Konstantin Bulenkov
*/
class TreeToolbarDecorator extends ToolbarDecorator {
private final JTree myTree;
@Nullable private final ElementProducer<?> myProducer;
TreeToolbarDecorator(JTree tree, @Nullable final ElementProducer<?> producer) {
myTree = tree;
myProducer = producer;
myAddActionEnabled = myRemoveActionEnabled = myUpActionEnabled = myDownActionEnabled = myTree.getModel() instanceof EditableTreeModel;
if (myTree.getModel() instanceof EditableTreeModel) {
createDefaultTreeActions();
}
myTree.getSelectionModel().addTreeSelectionListener(new TreeSelectionListener() {
@Override
public void valueChanged(TreeSelectionEvent e) {
updateButtons();
}
});
myTree.addPropertyChangeListener("enabled", new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent evt) {
updateButtons();
}
});
}
private void createDefaultTreeActions() {
final EditableTreeModel model = (EditableTreeModel)myTree.getModel();
myAddAction = new AnActionButtonRunnable() {
@Override
public void run(AnActionButton button) {
final TreePath path = myTree.getSelectionPath();
final DefaultMutableTreeNode selected =
path == null ? (DefaultMutableTreeNode)myTree.getModel().getRoot() : (DefaultMutableTreeNode)path.getLastPathComponent();
final Object selectedNode = selected.getUserObject();
myTree.stopEditing();
Object element;
if (model instanceof DefaultTreeModel && myProducer != null) {
element = myProducer.createElement();
if (element == null) return;
} else {
element = null;
}
DefaultMutableTreeNode parent = selected;
if ((selectedNode instanceof SimpleNode && ((SimpleNode)selectedNode).isAlwaysLeaf()) || !selected.getAllowsChildren()) {
parent = (DefaultMutableTreeNode)selected.getParent();
}
if (parent != null) {
parent.insert(new DefaultMutableTreeNode(element), parent.getChildCount());
}
final TreePath createdPath = model.addNode(new TreePath(parent.getPath()));
if (path != null) {
TreeUtil.selectPath(myTree, createdPath);
myTree.requestFocus();
}
}
};
myRemoveAction = new AnActionButtonRunnable() {
@Override
public void run(AnActionButton button) {
myTree.stopEditing();
final TreePath path = myTree.getSelectionPath();
model.removeNode(path);
}
};
}
@Override
public ToolbarDecorator initPosition() {
return setToolbarPosition(SystemInfo.isMac ? ActionToolbarPosition.BOTTOM : ActionToolbarPosition.TOP);
}
@Override
protected JComponent getComponent() {
return myTree;
}
@Override
protected void updateButtons() {
getActionsPanel().setEnabled(CommonActionsPanel.Buttons.REMOVE, myTree.getSelectionPath() != null);
}
@Override
public ToolbarDecorator setVisibleRowCount(int rowCount) {
myTree.setVisibleRowCount(rowCount);
return this;
}
@Override
protected boolean isModelEditable() {
return myTree.getModel() instanceof EditableModel;
}
@Override
protected void installDnDSupport() {
RowsDnDSupport.install(myTree, (EditableModel)myTree.getModel());
}
}
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