platform/dvcs-impl/src/com/intellij/dvcs/push/ui/NodeImageObserver.java

/*
 * Copyright 2000-2014 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.dvcs.push.ui;

import javax.swing.*;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;
import java.awt.*;
import java.awt.image.ImageObserver;

class NodeImageObserver implements ImageObserver {
  JTree tree;
  DefaultTreeModel model;
  TreeNode node;

  NodeImageObserver(JTree tree, TreeNode node) {
    this.tree = tree;
    this.model = (DefaultTreeModel)tree.getModel();
    this.node = node;
  }

  public boolean imageUpdate(Image img, int flags, int x, int y, int w, int h) {
    if ((flags & (FRAMEBITS | ALLBITS)) != 0) {
      TreePath path = new TreePath(model.getPathToRoot(node));
      Rectangle rect = tree.getPathBounds(path);
      if (rect != null) {
        tree.repaint(rect);
      }
    }
    return (flags & (ALLBITS | ABORT)) == 0;
  }
}