/**
* 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.waveprotocol.wave.client.wavepanel.block.pojo;
import org.waveprotocol.wave.client.paging.AbstractTreeNode;
import org.waveprotocol.wave.client.wavepanel.block.BlockStructure;
import org.waveprotocol.wave.model.util.CollectionUtils;
import org.waveprotocol.wave.model.util.StringMap;
/**
* Exposes a view structure backed by basic objects.
*
*/
public final class PojoStructure implements BlockStructure {
/**
* Obvious implementation of a node.
*/
public final class NodeImpl extends AbstractTreeNode<NodeImpl> implements Node {
private final String id;
private final NodeType type;
private NodeImpl(String id, NodeType type) {
this.id = id;
this.type = type;
}
@Override
protected NodeImpl self() {
return this;
}
@Override
public String getId() {
return id;
}
@Override
public NodeType getType() {
return type;
}
public NodeImpl createChild(String id, NodeType type) {
return append(createNode(id, type));
}
StringBuffer buildString(StringBuffer b) {
b.append(type.name());
b.append("(");
b.append(id);
b.append(")");
NodeImpl c = getFirstChild();
if (c != null) {
b.append(" { ");
c.buildString(b);
c = c.getNextSibling();
while (c != null) {
b.append(", ");
b.append(c);
c = c.getNextSibling();
}
b.append(" } ");
}
return b;
}
@Override
public String toString() {
return buildString(new StringBuffer()).toString();
}
}
private final StringMap<NodeImpl> nodes = CollectionUtils.createStringMap();
private final NodeImpl root = createNode("root", NodeType.ROOT);
private PojoStructure() {
}
public static PojoStructure create() {
return new PojoStructure();
}
private NodeImpl createNode(String id, NodeType type) {
NodeImpl node = new NodeImpl(id, type);
nodes.put(id, node);
return node;
}
@Override
public NodeImpl getRoot() {
return root;
}
@Override
public NodeImpl getNode(String id) {
return nodes.get(id);
}
@Override
public String toString() {
return root != null? root.toString() : "";
}
}