MultiControlTag


1   /*
2    * Copyright (c) 2006 - 2007 OpenSubsystems s.r.o. Slovak Republic. All rights reserved.
3    * 
4    * Project: OpenSubsystems
5    * 
6    * $Id: MultiControlTag.java,v 1.6 2007/01/07 06:14:28 bastafidli Exp $
7    * 
8    * This program is free software; you can redistribute it and/or modify
9    * it under the terms of the GNU General Public License as published by
10   * the Free Software Foundation; version 2 of the License. 
11   * 
12   * This program is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   * GNU General Public License for more details.
16   * 
17   * You should have received a copy of the GNU General Public License
18   * along with this program; if not, write to the Free Software
19   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
20   */
21   
22  package org.opensubsystems.patterns.dialoglayout.www;
23  
24  import javax.servlet.jsp.JspException  ;
25  
26  import org.opensubsystems.core.www.BlockElementTag;
27  import org.opensubsystems.core.www.TagUtils;
28  
29  /**
30   * Custom tag to generate all HTML code necessary to display dialog control 
31   * consisting from multiple controls from which only one is dislayed at a time.
32   * This allows user to enter data using different type of control based on the
33   * data type, but the data can be still identified with the same label and context
34   * help. Currently this control supports only edit field and combo box.
35   *  
36   * TODO: For Julo: TLD contains attribute maxlength but it is not implemented
37   * anywhere in this class. I think it is needed for the edit field so you need
38   * to add it here and implement all methods and passing it to the control. Once
39   * you do so update the TLD description for that attribute to demonstrate purpose.
40   * The same is for inputcssclass attribute in TLD.
41   *  
42   * @version $Id: MultiControlTag.java,v 1.6 2007/01/07 06:14:28 bastafidli Exp $
43   * @author Julian Legeny
44   * @code.reviewer Miro Halas
45   * @code.reviewed 1.3 2006/09/05 23:36:08 jlegeny
46   */
47  public class MultiControlTag extends BlockElementTag
48  {
49     // Attributes ///////////////////////////////////////////////////////////////
50     
51     /**
52      * Generated serial version id for this class.
53      */
54     private static final long serialVersionUID = 4570812626023302043L;
55  
56     /**
57      * Flag specifying if a combobox control has to be generated or not as part
58      * of this multi control. Default value is true.
59      */
60     protected String   m_strComboControl;
61  
62     /**
63      * Flag specifying if an edit field control has to be generated as part of 
64      * this multi control. Default value is true.
65      */
66     protected String   m_strEditControl;
67     
68     /**
69      * Size of the input tag used to limit viewable area.
70      * TODO: For Julo: This attribute is never used.
71      */
72     protected String   m_strSize;
73  
74     /**
75      * JavaScript code to execute when the selection changes in combobox.
76      */
77     protected String   m_strOnChangeCombo;
78  
79     /**
80      * JavaScript code to execute on key up event of edit field.
81      */
82     protected String   m_strOnKeyUpEdit;
83  
84     // Constructors /////////////////////////////////////////////////////////////
85     
86     /**
87      * Constructor for custom tag.
88      */
89     public MultiControlTag() 
90     {
91        super("clsStrechControl", BlockElementTag.SPAN_BLOCK_ELEMENT);
92        
93        m_strComboControl = Boolean.TRUE.toString();
94        m_strEditControl = Boolean.TRUE.toString();
95        m_strSize = null;
96        m_strOnChangeCombo = null;
97        m_strOnKeyUpEdit = null;
98     }
99     
100    // Business logic ///////////////////////////////////////////////////////////
101    
102    /**
103     * {@inheritDoc}
104     */
105    public int doStartTag(
106    ) throws JspException   
107    {
108       StringBuffer   sbHtml = new StringBuffer  ();
109 
110       if (isEditControl())
111       {
112          // Generate edit field control
113          SingleLineEditControlTag slect = new SingleLineEditControlTag();
114          if ((m_strOnKeyUpEdit != null) && (m_strOnKeyUpEdit.length() > 0))
115          {
116             slect.setOnkeyup(m_strOnKeyUpEdit);
117          }
118          slect.setPageContext(pageContext);
119          slect.doStartTag(sbHtml, "_editcontrolsection", "_editcontrol");
120          slect.doEndTag(sbHtml);
121       }
122       if (isComboControl())
123       {
124          // Generate combo box control
125          SelectControlTag sct = new SelectControlTag();
126          if ((m_strOnChangeCombo != null) && (m_strOnChangeCombo.length() > 0))
127          {
128             sct.setOnchange(m_strOnChangeCombo);
129          }
130          sct.setPageContext(pageContext);
131          sct.doStartTag(sbHtml, "_combocontrolsection", "_combocontrol");
132          sct.doEndTag(sbHtml);
133       }
134 
135       TagUtils.write(pageContext, sbHtml.toString());
136 
137       return (SKIP_BODY);
138    }
139 
140    /**
141     * {@inheritDoc}
142     */
143    public int doEndTag(
144    ) throws JspException   
145    {         
146       return (EVAL_PAGE);
147    }
148 
149    /**
150     * @return String - If combobox control should be shown then this attribute  
151     *                  should say true or 1.
152     */
153    public String   getCombocontrol(
154    )
155    {
156       return m_strComboControl;
157    }
158 
159    /**
160     * @param strComboControl - If combobox control should be shown then this attribute  
161     *                          should say true or 1.
162     */
163    public void setCombocontrol(
164       String   strComboControl
165    )
166    {
167       m_strComboControl = strComboControl;
168    }
169    
170    /**
171     * @param bComboControl - If combobox control should be shown then this attribute  
172     *                        should say true or 1.
173     */
174    public void setCombocontrol(
175       boolean bComboControl
176    )
177    {
178       m_strComboControl = Boolean.toString(bComboControl);
179    }
180    
181    /**
182     * @return boolean - true if combobox control has to be generated
183     */
184    public boolean isComboControl(
185    )
186    {
187       return ((Boolean.TRUE.toString().equalsIgnoreCase(m_strComboControl))
188              || ("1".equals(m_strComboControl))); 
189    }
190 
191    /**
192     * @return String - If edit control should be shown then this attribute  
193     *                  should say true or 1.
194     */
195    public String   getEditcontrol(
196    )
197    {
198       return m_strEditControl;
199    }
200 
201    /**
202     * @param strEditControl - If edit control should be shown then this attribute  
203     *                         should say true or 1.
204     */
205    public void setEditcontrol(
206       String   strEditControl
207    )
208    {
209       m_strEditControl = strEditControl;
210    }
211    
212    /**
213     * @param bEditControl - If edit control should be shown then this attribute  
214     *                       should say true or 1.
215     */
216    public void setEditcontrol(
217       boolean bEditControl
218    )
219    {
220       m_strEditControl = Boolean.toString(bEditControl);
221    }
222 
223    /**
224     * @return boolean - true if combo has to be generated
225     */
226    public boolean isEditControl(
227    )
228    {
229       return ((Boolean.TRUE.toString().equalsIgnoreCase(m_strEditControl))
230              || ("1".equals(m_strEditControl))); 
231    }
232    
233    /**
234     * @return String - Size of the input tag used to limit viewable area.
235     */
236    public String   getSize()
237    {
238       return m_strSize;
239    }
240 
241    /**
242     * @param strSize - Size of the input tag used to limit viewable area.
243     */
244    public void setSize(
245       String   strSize
246    )
247    {
248       m_strSize = strSize;
249    }
250 
251    /**
252     * @return String - JavaScript code to execute when the selection changes.
253     */
254    public String   getOnchangecombo(
255    )
256    {
257       return m_strOnChangeCombo;
258    }
259 
260    /**
261     * @param strOnChangeCombo - JavaScript code to execute when the selection changes.
262     */
263    public void setOnchangecombo(
264       String   strOnChangeCombo
265    )
266    {
267       m_strOnChangeCombo = strOnChangeCombo;
268    }
269 
270    /**
271     * @return String - JavaScript code to execute when the the content of edit field is changed.
272     */
273    public String   getOnkeyupedit(
274    )
275    {
276       return m_strOnKeyUpEdit;
277    }
278 
279    /**
280     * @param strOnKeyUpEdit - JavaScript code to execute on key up event of the edit field.
281     */
282    public void setOnkeyupedit(
283       String   strOnKeyUpEdit
284    )
285    {
286       m_strOnKeyUpEdit = strOnKeyUpEdit;
287    }
288 }
289
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