PaddingElement


1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  /* $Id: PaddingElement.java 426576 2006-07-28 15:44:37Z jeremias $ */
19  
20  package org.apache.fop.layoutmgr;
21  
22  import org.apache.fop.datatypes.PercentBaseContext;
23  import org.apache.fop.fo.properties.CondLengthProperty;
24  import org.apache.fop.traits.MinOptMax;
25  
26  /**
27   * This represents an unresolved padding element.
28   */
29  public class PaddingElement extends BorderOrPaddingElement {
30  
31      /**
32       * Main constructor
33       * @param position the Position instance needed by the addAreas stage of the LMs.
34       * @param side the side to which this space element applies.
35       * @param condLength the length-conditional property for a border or padding specification
36       * @param isFirst true if this is a padding- or border-before of the first area generated.
37       * @param isLast true if this is a padding- or border-after of the last area generated.
38       * @param context the property evaluation context
39       */
40      public PaddingElement(Position position, CondLengthProperty condLength,
41              RelSide side,
42              boolean isFirst, boolean isLast, PercentBaseContext context) {
43          super(position, condLength, side, isFirst, isLast, context);
44      }
45      
46      /** @see org.apache.fop.layoutmgr.UnresolvedListElementWithLength */
47      public void notifyLayoutManager(MinOptMax effectiveLength) {
48          LayoutManager lm = getOriginatingLayoutManager(); 
49          if (lm instanceof ConditionalElementListener) {
50              ((ConditionalElementListener)lm).notifyPadding(
51                      getSide(), effectiveLength);
52          } else {
53              log.warn("Cannot notify LM. It does not implement ConditionalElementListene: "
54                      + lm.getClass().getName());
55          }
56      }
57  
58      /** @see java.lang.Object#toString() */
59      public String   toString() {
60          StringBuffer   sb = new StringBuffer  ("Padding[");
61          sb.append(super.toString());
62          sb.append("]");
63          return sb.toString();
64      }
65      
66  }
67
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