/*
* 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 org.apache.pivot.util.ListenerList;
import org.apache.pivot.wtk.HorizontalAlignment;
/**
* Abstract base class for block elements.
* <p>
* TODO Add margin, and line spacing properties.
*/
public abstract class Block extends Element {
private static class BlockListenerList extends ListenerList<BlockListener> implements
BlockListener {
@Override
public void horizontalAlignmentChanged(Block block, HorizontalAlignment previousHorizontalAlignment) {
for (BlockListener listener : this) {
listener.horizontalAlignmentChanged(block, previousHorizontalAlignment);
}
}
}
private HorizontalAlignment horizontalAlignment = HorizontalAlignment.LEFT;
private BlockListenerList blockListeners = new BlockListenerList();
public Block() {
super();
}
public Block(Block blockElement, boolean recursive) {
super(blockElement, recursive);
this.horizontalAlignment = blockElement.horizontalAlignment;
}
public HorizontalAlignment getHorizontalAlignment() {
return horizontalAlignment;
}
public void setHorizontalAlignment(HorizontalAlignment horizontalAlignment) {
if (horizontalAlignment == null) {
throw new IllegalArgumentException("horizontalAlignment is null.");
}
HorizontalAlignment previousHorizontalAlignment = this.horizontalAlignment;
if (previousHorizontalAlignment != horizontalAlignment) {
this.horizontalAlignment = horizontalAlignment;
blockListeners.horizontalAlignmentChanged(this, previousHorizontalAlignment);
}
}
public ListenerList<BlockListener> getBlockListeners() {
return blockListeners;
}
}