DOMTextNodeSupport.aj

/*
 * 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.axiom.dom;

import org.apache.axiom.core.CoreChildNode;
import org.w3c.dom.DOMException;
import org.w3c.dom.Text;

public aspect DOMTextNodeSupport {
    private DOMTextNode DOMTextNode.getWholeTextStartNode() {
        DOMTextNode first = this;
        while (true) {
            CoreChildNode sibling = first.coreGetPreviousSibling();
            if (sibling instanceof DOMTextNode) {
                first = (DOMTextNode)sibling;
            } else {
                break;
            }
        }
        return first;
    }
    
    private DOMTextNode DOMTextNode.getWholeTextEndNode() {
        DOMTextNode last = this;
        while (true) {
            CoreChildNode sibling = last.coreGetNextSibling();
            if (sibling instanceof DOMTextNode) {
                last = (DOMTextNode)sibling;
            } else {
                break;
            }
        }
        return last;
    }

    public final String DOMTextNode.getWholeText() {
        DOMTextNode first = getWholeTextStartNode();
        DOMTextNode last = getWholeTextEndNode();
        if (first == last) {
            return first.getData();
        } else {
            StringBuilder buffer = new StringBuilder();
            DOMTextNode current = first;
            while (true) {
                buffer.append(current.getData());
                if (current == last) {
                    break;
                } else {
                    current = (DOMTextNode)current.coreGetNextSibling();
                }
            }
            return buffer.toString();
        }
    }

    public final Text DOMTextNode.replaceWholeText(String content) throws DOMException {
        DOMText newText;
        if (content.length() > 0) {
            newText = coreGetNodeFactory().createNode(DOMText.class);
            newText.coreSetCharacterData(content);
        } else {
            newText = null;
        }
        if (coreHasParent()) {
            DOMTextNode first = getWholeTextStartNode();
            DOMTextNode last = getWholeTextEndNode();
            if (newText != null) {
                first.coreInsertSiblingBefore(newText);
            }
            DOMTextNode current = first;
            DOMTextNode next;
            do {
                next = current == last ? null : (DOMTextNode)current.coreGetNextSibling();
                current.coreDetach(DOMSemantics.INSTANCE);
                current = next;
            } while (next != null);
        }
        return newText;
    }
}