Palette


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.tapestry.workbench.palette;
16  
17  import java.util.List  ;
18  
19  import org.apache.tapestry.IPage;
20  import org.apache.tapestry.IRequestCycle;
21  import org.apache.tapestry.annotations.InjectPage;
22  import org.apache.tapestry.contrib.palette.SortMode;
23  import org.apache.tapestry.form.IPropertySelectionModel;
24  import org.apache.tapestry.form.StringPropertySelectionModel;
25  import org.apache.tapestry.html.BasePage;
26  import org.apache.tapestry.valid.IValidationDelegate;
27  
28  /**
29   * @author Howard Lewis Ship
30   */
31  
32  public abstract class Palette extends BasePage
33  {
34      public abstract List   getSelectedColors();
35  
36      public abstract String   getSort();
37  
38      private IPropertySelectionModel _sortModel;
39  
40      /**
41       * Invoked before {@link #formSubmit(IRequestCycle)} if the user clicks the "advance" button.
42       */
43  
44      @InjectPage("PaletteResults")
45      public abstract PaletteResults getResultsPage();
46  
47      public IPage advance()
48      {
49          IValidationDelegate delegate = (IValidationDelegate) getBeans().getBean("delegate");
50          
51          if (delegate.getHasErrors()) return null;
52          
53          // Since Palette and palette.Results come from
54          // a library now, we need to make sure
55          // the namespace id is part of the name.
56  
57          PaletteResults results = getResultsPage();
58  
59          results.setSelectedColors(getSelectedColors());
60  
61          return results;
62      }
63  
64      private IPropertySelectionModel colorModel;
65  
66      private String  [] colors =
67      { "Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet" };
68  
69      public IPropertySelectionModel getColorModel()
70      {
71          if (colorModel == null)
72              colorModel = new StringPropertySelectionModel(colors);
73  
74          return colorModel;
75      }
76  
77      public IPropertySelectionModel getSortModel()
78      {
79          if (_sortModel == null)
80          {
81              String  [] options = new String  []
82              { SortMode.NONE, SortMode.LABEL, SortMode.VALUE, SortMode.USER };
83  
84              _sortModel = new StringPropertySelectionModel(options);
85          }
86  
87          return _sortModel;
88      }
89  }
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