1 /*
2 * Copyright 2002 - 2007 JEuclid, http://jeuclid.sf.net
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
17 /* $Id: InlineLayoutContext.java,v 601cf72e95bf 2007/09/14 13:49:37 maxberger $ */
18
19 package net.sourceforge.jeuclid.context;
20
21 import net.sourceforge.jeuclid.LayoutContext;
22
23 /**
24 * @version $Revision: 601cf72e95bf $
25 */
26 public class InlineLayoutContext implements LayoutContext {
27
28 private final LayoutContext parentLayoutContext;
29
30 private final boolean increaseIfAlreadyInline;
31
32 /**
33 * Default Constructor.
34 *
35 * @param parent
36 * LayoutContext of parent.
37 */
38 public InlineLayoutContext(final LayoutContext parent) {
39 this.parentLayoutContext = parent;
40 this.increaseIfAlreadyInline = false;
41 }
42
43 /**
44 * Behavior for mfrac.
45 *
46 * @param parent
47 * LayoutContext of parent.
48 * @param increase
49 * increase scriptlevel if already inline.
50 */
51 public InlineLayoutContext(final LayoutContext parent,
52 final boolean increase) {
53 this.parentLayoutContext = parent;
54 this.increaseIfAlreadyInline = increase;
55 }
56
57 /** {@inheritDoc} */
58 public Object getParameter(final Parameter which) {
59 Object retVal;
60 if (Parameter.DISPLAY.equals(which)) {
61 retVal = Display.INLINE;
62 } else if (this.increaseIfAlreadyInline
63 && (Parameter.SCRIPTLEVEL.equals(which))
64 && (Display.INLINE.equals(this.parentLayoutContext
65 .getParameter(Parameter.DISPLAY)))) {
66 retVal = ((Integer) this.parentLayoutContext
67 .getParameter(Parameter.SCRIPTLEVEL)) + 1;
68 } else {
69 retVal = this.parentLayoutContext.getParameter(which);
70 }
71 return retVal;
72 }
73 }