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1
17 package org.alfresco.web.ui.common.component.data;
18
19 import java.io.IOException  ;
20 import java.util.Map ;
21
22 import javax.faces.component.NamingContainer;
23 import javax.faces.component.UICommand;
24 import javax.faces.component.UIComponent;
25 import javax.faces.context.FacesContext;
26 import javax.faces.context.ResponseWriter;
27 import javax.faces.el.ValueBinding;
28 import javax.faces.event.AbortProcessingException;
29 import javax.faces.event.ActionEvent;
30 import javax.faces.event.FacesEvent;
31
32 import org.apache.log4j.Logger;
33
34 import org.alfresco.web.data.IDataContainer;
35 import org.alfresco.web.ui.common.Utils;
36 import org.alfresco.web.ui.common.WebResources;
37
38
41 public class UISortLink extends UICommand
42 {
43
46 public UISortLink()
47 {
48 setRendererType(null);
49 }
50
51
54 public void encodeBegin(FacesContext context) throws IOException
55 {
56 ResponseWriter out = context.getResponseWriter();
57
58 IDataContainer dataContainer = getDataContainer();
59 if (dataContainer == null)
60 {
61 throw new IllegalStateException ("Must nest UISortLink inside component implementing IDataContainer!");
62 }
63
64 boolean bPreviouslySorted = false;
66 boolean descending = true;
67 String lastSortedColumn = dataContainer.getCurrentSortColumn();
68 if (lastSortedColumn == (String )getValue())
69 {
70 descending = !dataContainer.isCurrentSortDescending();
71 bPreviouslySorted = true;
72 }
73
74 StringBuilder buf = new StringBuilder (256);
76 buf.append("<nobr><a HREF='#' onclick=\"");
77 buf.append(Utils.generateFormSubmit(context, this, getHiddenFieldName(context), getClientId(context)));
80 buf.append('"');
81
82 if (getAttributes().get("style") != null)
83 {
84 buf.append(" style=\"")
85 .append(getAttributes().get("style"))
86 .append('"');
87 }
88 if (getAttributes().get("styleClass") != null)
89 {
90 buf.append(" class=")
91 .append(getAttributes().get("styleClass"));
92 }
93 if (getAttributes().get("tooltip") != null)
94 {
95 buf.append(" title=\"")
96 .append(getAttributes().get("tooltip"))
97 .append('"');
98 }
99 buf.append('>');
100
101 buf.append((String )getAttributes().get("label"));
103
104 if (bPreviouslySorted == true)
105 {
106 if (descending == true)
107 {
108 buf.append(" ")
109 .append(Utils.buildImageTag(context, WebResources.IMAGE_SORTUP, 10, 6, null));
110 }
111 else
112 {
113 buf.append(" ")
114 .append(Utils.buildImageTag(context, WebResources.IMAGE_SORTDOWN, 10, 6, null));
115 }
116 }
117 else
118 {
119 buf.append(" ")
120 .append(Utils.buildImageTag(context, WebResources.IMAGE_SORTNONE, 10, 7, null));
121 }
122 buf.append("</a></nobr>");
123
124 out.write(buf.toString());
125 }
126
127
130 public void decode(FacesContext context)
131 {
132 Map requestMap = context.getExternalContext().getRequestParameterMap();
133 String fieldId = getHiddenFieldName(context);
134 String value = (String )requestMap.get(fieldId);
135 if (value != null && value.equals(getClientId(context)))
136 {
137 SortEvent actionEvent = new SortEvent(this, (String )this.getValue());
141 this.queueEvent(actionEvent);
142 }
143 }
144
145
148 public void broadcast(FacesEvent event) throws AbortProcessingException
149 {
150 if (event instanceof SortEvent == false)
151 {
152 super.broadcast(event);
154 }
155 else if ( ((SortEvent)event).Column.equals(getColumn()) )
156 {
157 if (s_logger.isDebugEnabled())
159 s_logger.debug("Handling sort event for column: " + ((SortEvent)event).Column);
160
161 if (getColumn().equals(getDataContainer().getCurrentSortColumn()) == true)
162 {
163 this.descending = !this.descending;
165 }
166 else
167 {
168 this.descending = true;
170 }
171 getDataContainer().sort(getColumn(), this.descending, getMode());
172 }
173 }
174
175
184 private String getHiddenFieldName(FacesContext context)
185 {
186 UIComponent dataContainer = (UIComponent)Utils.getParentDataContainer(context, this);
187 return dataContainer.getClientId(context) + NamingContainer.SEPARATOR_CHAR + "sort";
188 }
189
190
195 public String getColumn()
196 {
197 return (String )getValue();
198 }
199
200
205 public String getMode()
206 {
207 return this.mode;
208 }
209
210
215 public void setMode(String sortMode)
216 {
217 this.mode = sortMode;
218 }
219
220
225 public boolean isDescending()
226 {
227 return this.descending;
228 }
229
230
233 public String getLabel()
234 {
235 ValueBinding vb = getValueBinding("label");
236 if (vb != null)
237 {
238 this.label = (String )vb.getValue(getFacesContext());
239 }
240 return this.label;
241 }
242
243
246 public void setLabel(String label)
247 {
248 this.label = label;
249 }
250
251
254 public String getTooltip()
255 {
256 ValueBinding vb = getValueBinding("tooltip");
257 if (vb != null)
258 {
259 this.tooltip = (String )vb.getValue(getFacesContext());
260 }
261 return this.tooltip;
262 }
263
264
267 public void setTooltip(String tooltip)
268 {
269 this.tooltip = tooltip;
270 }
271
272
275 public void restoreState(FacesContext context, Object state)
276 {
277 Object values[] = (Object [])state;
278 super.restoreState(context, values[0]);
280 this.descending = ((Boolean )values[1]).booleanValue();
281 this.mode = (String )values[2];
282 this.label = (String )values[3];
283 this.tooltip = (String )values[4];
284 }
285
286
289 public Object saveState(FacesContext context)
290 {
291 Object values[] = new Object [5];
292 values[0] = super.saveState(context);
294 values[1] = (this.descending ? Boolean.TRUE : Boolean.FALSE);
295 values[2] = this.mode;
296 values[3] = this.label;
297 values[4] = this.tooltip;
298 return values;
299 }
300
301
304 private IDataContainer getDataContainer()
305 {
306 return Utils.getParentDataContainer(getFacesContext(), this);
307 }
308
309
310
313
316 private static class SortEvent extends ActionEvent
317 {
318 public SortEvent(UIComponent component, String column)
319 {
320 super(component);
321 Column = column;
322 }
323
324 public String Column = null;
325 }
326
327
328
331 private static Logger s_logger = Logger.getLogger(IDataContainer.class);
332
333
334 private String mode = IDataContainer.SORT_CASEINSENSITIVE;
335
336 private String label;
337
338 private String tooltip;
339
340
341 private boolean descending = false;
342 }
343 |
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