/**
* Copyright 2008 Google Inc.
*
* 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 org.waveprotocol.wave.client.editor.content;
import org.waveprotocol.wave.model.document.util.Point;
import org.waveprotocol.wave.model.util.CollectionUtils;
import java.util.Map;
/**
* A full, read-only content view, with singleton
*
* @author danilatos@google.com (Daniel Danilatos)
*/
public class FullContentView implements ContentView {
/** Singleton, lacking a document element */
public static final ContentView INSTANCE = new FullContentView();
@Override
public short getNodeType(ContentNode node) {
return node.getNodeType();
}
@Override
public String getData(ContentTextNode textNode) {
return textNode.getData();
}
@Override
public ContentElement getDocumentElement() {
throw new RuntimeException("This is not implemented because the view is meant "
+ "as a generic singleton");
}
@Override
public ContentNode getFirstChild(ContentNode node) {
return node.getFirstChild();
}
@Override
public ContentNode getLastChild(ContentNode node) {
return node.getLastChild();
}
@Override
public int getLength(ContentTextNode textNode) {
return textNode.getLength();
}
@Override
public ContentNode getNextSibling(ContentNode node) {
return node.getNextSibling();
}
@Override
public ContentElement getParentElement(ContentNode node) {
return node.getParentElement();
}
@Override
public ContentNode getPreviousSibling(ContentNode node) {
return node.getPreviousSibling();
}
@Override
public ContentElement asElement(ContentNode node) {
return node != null ? node.asElement() : null;
}
@Override
public ContentTextNode asText(ContentNode node) {
return node != null ? node.asText() : null;
}
@Override
public boolean isSameNode(ContentNode node, ContentNode other) {
return node == other;
}
@Override
public Map<String, String> getAttributes(ContentElement element) {
return CollectionUtils.newJavaMap(element.getAttributes());
}
@Override
public String getAttribute(ContentElement element, String name) {
return element.getAttribute(name);
}
@Override
public String getTagName(ContentElement element) {
return element.getTagName();
}
@Override
public void onBeforeFilter(Point<ContentNode> at) {
// NO-OP
}
@Override
public ContentNode getVisibleNode(ContentNode node) {
return node;
}
@Override
public ContentNode getVisibleNodeFirst(ContentNode node) {
return node;
}
@Override
public ContentNode getVisibleNodeLast(ContentNode node) {
return node;
}
@Override
public ContentNode getVisibleNodeNext(ContentNode node) {
return node;
}
@Override
public ContentNode getVisibleNodePrevious(ContentNode node) {
return node;
}
}