View Javadoc

    1   /*
    2    * Copyright 2002,2004 The Apache Software Foundation.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  package org.apache.commons.jelly.tags.core;
    17
    18  import org.apache.commons.jelly.JellyTagException;
    19  import org.apache.commons.jelly.TagSupport;
    20  import org.apache.commons.jelly.XMLOutput;
    21
    22  /*** A tag which conditionally evaluates its body based on some condition
    23    *
    24    * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
    25    * @version $Revision: 155420 $
    26    */
    27  public class ChooseTag extends TagSupport {
    28
    29      private boolean blockEvaluated;
    30
    31      public ChooseTag() {
    32      }
    33
    34      // Tag interface
    35      //-------------------------------------------------------------------------
    36      public void doTag(XMLOutput output) throws JellyTagException {
    37          setBlockEvaluated(false);
    38          invokeBody(output);
    39      }
    40
    41      protected boolean isBlockEvaluated() {
    42          return blockEvaluated;
    43      }
    44
    45      protected void setBlockEvaluated(boolean blockEvaluated) {
    46          this.blockEvaluated = blockEvaluated;
    47      }
    48  }