| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you 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 org.apache.pivot.wtk.text; |
| |
| import java.net.URL; |
| |
| import org.apache.pivot.util.ImageUtils; |
| import org.apache.pivot.util.ListenerList; |
| import org.apache.pivot.util.Utils; |
| import org.apache.pivot.wtk.TextPane; |
| import org.apache.pivot.wtk.media.Image; |
| |
| /** |
| * Node representing an image to be inserted into a {@link TextPane}. |
| */ |
| public class ImageNode extends Node { |
| private Image image = null; |
| |
| private ImageNodeListener.Listeners imageNodeListeners = new ImageNodeListener.Listeners(); |
| |
| public ImageNode() { |
| } |
| |
| public ImageNode(ImageNode imageNode) { |
| setImage(imageNode.getImage()); |
| } |
| |
| public ImageNode(Image image) { |
| setImage(image); |
| } |
| |
| public ImageNode(URL image) { |
| setImage(image); |
| } |
| |
| public ImageNode(String image) { |
| setImage(image); |
| } |
| |
| public Image getImage() { |
| return image; |
| } |
| |
| public void setImage(Image image) { |
| Image previousImage = this.image; |
| |
| if (previousImage != image) { |
| this.image = image; |
| imageNodeListeners.imageChanged(this, previousImage); |
| } |
| } |
| |
| /** |
| * Sets the image node's current image by URL. <p> If the icon already |
| * exists in the application context resource cache, the cached value will |
| * be used. Otherwise, the icon will be loaded synchronously and added to |
| * the cache. |
| * |
| * @param imageURL The location of the image to set. |
| */ |
| public void setImage(URL imageURL) { |
| setImage(Image.loadFromCache(imageURL)); |
| } |
| |
| /** |
| * Sets the image node's icon by |
| * {@linkplain ClassLoader#getResource(String) resource name}. |
| * |
| * @param imageName The resource name of the image to set. |
| * @see #setImage(URL) |
| * @see ImageUtils#findByName(String,String) |
| */ |
| public void setImage(String imageName) { |
| setImage(ImageUtils.findByName(imageName, "image")); |
| } |
| |
| @Override |
| public char getCharacterAt(int offset) { |
| return 0x00; |
| } |
| |
| @Override |
| public int getCharacterCount() { |
| return 1; |
| } |
| |
| @Override |
| public void insertRange(Node range, int offset) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Node removeRange(int offset, int span) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Node getRange(int offset, int characterCount) { |
| Utils.checkIndexBounds(offset, 0, 1); |
| |
| if (characterCount != 1) { |
| throw new IllegalArgumentException("Invalid characterCount."); |
| } |
| |
| return new ImageNode(this); |
| } |
| |
| @Override |
| public CharSequence getCharacters() { |
| return ""; |
| } |
| |
| @Override |
| public Node duplicate(boolean recursive) { |
| return new ImageNode(this); |
| } |
| |
| public ListenerList<ImageNodeListener> getImageNodeListeners() { |
| return imageNodeListeners; |
| } |
| } |