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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package org.apache.myfaces.tobago.facelets;
21  
22  import org.apache.myfaces.tobago.component.Attributes;
23  import org.apache.myfaces.tobago.component.UIGridLayout;
24  import org.apache.myfaces.tobago.layout.Measure;
25  
26  import javax.faces.view.facelets.FaceletContext;
27  import javax.faces.view.facelets.MetaRule;
28  import javax.faces.view.facelets.Metadata;
29  import javax.faces.view.facelets.MetadataTarget;
30  import javax.faces.view.facelets.TagAttribute;
31  
32  public class GridLayoutRule extends MetaRule {
33  
34    public static final GridLayoutRule INSTANCE = new GridLayoutRule();
35  
36    public Metadata applyRule(String name, TagAttribute attribute, MetadataTarget metadataTarget) {
37      if (metadataTarget.isTargetInstanceOf(UIGridLayout.class)) {
38        if (attribute.isLiteral()) {
39          if (Attributes.COLUMN_SPACING.equals(name)) {
40            return new ColumnSpacingMapper(attribute);
41          }
42          if (Attributes.ROW_SPACING.equals(name)) {
43            return new RowSpacingMapper(attribute);
44          }
45          if (Attributes.CELLSPACING.equals(name)) {
46            return new CellspacingMapper(attribute);
47          }
48          if (Attributes.MARGIN_LEFT.equals(name)) {
49            return new MarginLeftMapper(attribute);
50          }
51          if (Attributes.MARGIN_TOP.equals(name)) {
52            return new MarginTopMapper(attribute);
53          }
54          if (Attributes.MARGIN_RIGHT.equals(name)) {
55            return new MarginRightMapper(attribute);
56          }
57          if (Attributes.MARGIN_BOTTOM.equals(name)) {
58            return new MarginBottomMapper(attribute);
59          }
60          if (Attributes.MARGIN.equals(name)) {
61            return new MarginMapper(attribute);
62          }
63        }
64      }
65      return null;
66    }
67  
68    static final class ColumnSpacingMapper extends Metadata {
69      private final TagAttribute attribute;
70  
71      ColumnSpacingMapper(TagAttribute attribute) {
72        this.attribute = attribute;
73      }
74  
75      public void applyMetadata(FaceletContext ctx, Object instance) {
76        UIGridLayout gridLayout = (UIGridLayout) instance;
77        gridLayout.setColumnSpacing(Measure.parse(attribute.getValue()));
78      }
79    }
80  
81    static final class RowSpacingMapper extends Metadata {
82      private final TagAttribute attribute;
83  
84      RowSpacingMapper(TagAttribute attribute) {
85        this.attribute = attribute;
86      }
87  
88      public void applyMetadata(FaceletContext ctx, Object instance) {
89        UIGridLayout gridLayout = (UIGridLayout) instance;
90        gridLayout.setRowSpacing(Measure.parse(attribute.getValue()));
91      }
92    }
93  
94    static final class CellspacingMapper extends Metadata {
95      private final TagAttribute attribute;
96  
97      CellspacingMapper(TagAttribute attribute) {
98        this.attribute = attribute;
99      }
100 
101     public void applyMetadata(FaceletContext ctx, Object instance) {
102       UIGridLayout gridLayout = (UIGridLayout) instance;
103       gridLayout.setCellspacing(Measure.parse(attribute.getValue()));
104     }
105   }
106 
107   static final class MarginLeftMapper extends Metadata {
108     private final TagAttribute attribute;
109 
110     MarginLeftMapper(TagAttribute attribute) {
111       this.attribute = attribute;
112     }
113 
114     public void applyMetadata(FaceletContext ctx, Object instance) {
115       UIGridLayout gridLayout = (UIGridLayout) instance;
116       gridLayout.setMarginLeft(Measure.valueOf(attribute.getValue()));
117     }
118   }
119 
120   static final class MarginTopMapper extends Metadata {
121     private final TagAttribute attribute;
122 
123     MarginTopMapper(TagAttribute attribute) {
124       this.attribute = attribute;
125     }
126 
127     public void applyMetadata(FaceletContext ctx, Object instance) {
128       UIGridLayout gridLayout = (UIGridLayout) instance;
129       gridLayout.setMarginTop(Measure.valueOf(attribute.getValue()));
130     }
131   }
132 
133   static final class MarginRightMapper extends Metadata {
134     private final TagAttribute attribute;
135 
136     MarginRightMapper(TagAttribute attribute) {
137       this.attribute = attribute;
138     }
139 
140     public void applyMetadata(FaceletContext ctx, Object instance) {
141       UIGridLayout gridLayout = (UIGridLayout) instance;
142       gridLayout.setMarginRight(Measure.valueOf(attribute.getValue()));
143     }
144   }
145 
146   static final class MarginBottomMapper extends Metadata {
147     private final TagAttribute attribute;
148 
149     MarginBottomMapper(TagAttribute attribute) {
150       this.attribute = attribute;
151     }
152 
153     public void applyMetadata(FaceletContext ctx, Object instance) {
154       UIGridLayout gridLayout = (UIGridLayout) instance;
155       gridLayout.setMarginBottom(Measure.valueOf(attribute.getValue()));
156     }
157   }
158 
159   static final class MarginMapper extends Metadata {
160     private final TagAttribute attribute;
161 
162     MarginMapper(TagAttribute attribute) {
163       this.attribute = attribute;
164     }
165 
166     public void applyMetadata(FaceletContext ctx, Object instance) {
167       UIGridLayout gridLayout = (UIGridLayout) instance;
168       gridLayout.setMargin(Measure.valueOf(attribute.getValue()));
169     }
170   }
171 }