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1
16 package org.apache.myfaces.custom.tabbedpane;
17
18 import org.apache.myfaces.renderkit.RendererUtils;
19 import org.apache.myfaces.renderkit.html.HTML;
20 import org.apache.myfaces.renderkit.html.HtmlRenderer;
21 import org.apache.myfaces.renderkit.html.HtmlRendererUtils;
22 import org.apache.myfaces.component.UserRoleUtils;
23
24 import javax.faces.application.ViewHandler;
25 import javax.faces.component.NamingContainer;
26 import javax.faces.component.UIComponent;
27 import javax.faces.component.UIForm;
28 import javax.faces.component.UIViewRoot;
29 import javax.faces.component.UINamingContainer;
30 import javax.faces.context.FacesContext;
31 import javax.faces.context.ResponseWriter;
32 import java.io.IOException  ;
33 import java.util.List ;
34 import java.util.Map ;
35
36
68 public class HtmlTabbedPaneRenderer
69 extends HtmlRenderer
70 {
71
73 private static final String TABLE_STYLE =
74 "border-style: none; " +
75 "padding: 0px; " +
76 "border-spacing: 0px; " +
77 "empty-cells: show; ";
78
79 private static final String ACTIVE_HEADER_CELL_STYLE =
80 "border-top: 2px outset #CCCCCC; " +
81 "border-right: 2px outset #CCCCCC; " +
82 "border-bottom: 0px none; " +
83 "border-left: 2px outset #CCCCCC; " +
84 "text-align: center; ";
85
86 private static final String INACTIVE_HEADER_CELL_STYLE =
87 "border-top: 1px outset #CCCCCC; " +
88 "border-right: 1px outset #CCCCCC; " +
89 "border-bottom: 0px none; " +
90 "border-left: 1px outset #CCCCCC; " +
91 "text-align: center; " +
92 "background-color: #CCCCCC; ";
93
94 private static final String EMPTY_HEADER_CELL_STYLE =
95 "border-top: 0px none; " +
96 "border-right: 0px none; " +
97 "border-bottom: 0px none; " +
98 "border-left: 0px none; ";
99
100 private static final String SUB_HEADER_CELL_STYLE =
101 "height: 2px; " +
102 "line-height: 0px; font-size: 0px; " +
103 "border-bottom: 0px none; ";
104
105 private static final String TAB_CELL_STYLE =
106 "border-top: 0px none; " +
107 "border-right: 2px outset #CCCCCC; " +
108 "border-bottom: 2px outset #CCCCCC; " +
109 "border-left: 2px outset #CCCCCC; " +
110 "padding: 10px; ";
111
112 private static final String NO_BORDER_STYLE =
113 "0px none; ";
114
115 private static final String BORDER_STYLE =
116 "2px outset #CCCCCC; ";
117
118 private static final String BUTTON_STYLE_ACTIVE
119 = "border-style:none; width:100%; cursor:pointer;";
120 private static final String BUTTON_STYLE_INACTIVE
121 = "border-style:none; width:100%; cursor:pointer; background-color:#CCCCCC;";
122
123 private static final String BUTTON_STYLE_DISABLED
124 = "border-style:none; width:100%; cursor:normal;";
125
126 private static final String DEFAULT_BG_COLOR = "#FFFFFF";
127
128 private static final String AUTO_FORM_SUFFIX = ".autoform";
129
130
131 public void encodeBegin(FacesContext facesContext, UIComponent uiComponent) throws IOException
132 {
133 }
134
135 public boolean getRendersChildren()
136 {
137 return true;
138 }
139
140 public void encodeChildren(FacesContext facescontext, UIComponent uicomponent) throws IOException
141 {
142 }
143
144 public void encodeEnd(FacesContext facesContext, UIComponent uiComponent) throws IOException
145 {
146 RendererUtils.checkParamValidity(facesContext, uiComponent, HtmlPanelTabbedPane.class);
147
148 ResponseWriter writer = facesContext.getResponseWriter();
149
150 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
151
152 HtmlPanelTabbedPane tabbedPane = (HtmlPanelTabbedPane)uiComponent;
153 int selectedIndex = tabbedPane.getSelectedIndex();
154
155 if (tabbedPane.getBgcolor() == null)
156 {
157 tabbedPane.setBgcolor(DEFAULT_BG_COLOR);
158 }
159
160 UIForm parentForm = RendererUtils.findParentForm(tabbedPane);
161 if (parentForm == null)
162 {
163 writeFormStart(writer, facesContext, tabbedPane);
164 }
165
166 writeTableStart(writer, facesContext, tabbedPane);
167 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
168 writer.startElement(HTML.TR_ELEM, uiComponent);
169
170 int tabIdx = 0;
172 int visibleTabCount = 0;
173 int visibleTabSelectedIdx = -1;
174 List children = tabbedPane.getChildren();
175 for (int i = 0, len = children.size(); i < len; i++)
176 {
177 UIComponent child = getUIComponent((UIComponent)children.get(i));
178 if (child instanceof HtmlPanelTab)
179 {
180 if (child.isRendered())
181 {
182 writeHeaderCell(writer, facesContext, tabbedPane,
183 (HtmlPanelTab)child, tabIdx, tabIdx == selectedIndex, isDisabled(facesContext, child));
184 if (tabIdx == selectedIndex)
185 {
186 visibleTabSelectedIdx = visibleTabCount;
187 }
188 visibleTabCount++;
189 }
190 tabIdx++;
191 }
192 }
193
194 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
196 HtmlRendererUtils.writePrettyIndent(facesContext);
197 writer.startElement(HTML.TD_ELEM, uiComponent);
198 writer.writeAttribute(HTML.STYLE_ATTR, EMPTY_HEADER_CELL_STYLE, null);
199 writer.write(" ");
200 writer.endElement(HTML.TD_ELEM);
201 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
202 writer.endElement(HTML.TR_ELEM);
203
204 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
206 writer.startElement(HTML.TR_ELEM, uiComponent);
207 writeSubHeaderCells(writer, facesContext, tabbedPane, visibleTabCount, visibleTabSelectedIdx, false);
208 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
209 writer.endElement(HTML.TR_ELEM);
210
211 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
213 writer.startElement(HTML.TR_ELEM, uiComponent);
214 writeTabCell(writer, facesContext, tabbedPane, visibleTabCount, selectedIndex);
215 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
216 writer.endElement(HTML.TR_ELEM);
217
218 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
219 writer.endElement(HTML.TABLE_ELEM);
220
221 if (parentForm == null)
222 {
223 writeFormEnd(writer, facesContext);
224 }
225 }
226
227
228 public void decode(FacesContext facesContext, UIComponent uiComponent)
229 {
230 RendererUtils.checkParamValidity(facesContext, uiComponent, HtmlPanelTabbedPane.class);
231
232 HtmlPanelTabbedPane tabbedPane = (HtmlPanelTabbedPane)uiComponent;
233
234 Map paramMap = facesContext.getExternalContext().getRequestParameterMap();
235
236 int tabIdx = 0;
237 List children = tabbedPane.getChildren();
238 for (int i = 0, len = children.size(); i < len; i++)
239 {
240 UIComponent child = getUIComponent((UIComponent)children.get(i));
241 if (child instanceof HtmlPanelTab)
242 {
243 String paramName = tabbedPane.getClientId(facesContext) + "." + tabIdx;
244 String paramValue = (String )paramMap.get(paramName);
245 if (paramValue != null && paramValue.length() > 0)
246 {
247 tabbedPane.queueEvent(new TabChangeEvent(tabbedPane,
248 tabbedPane.getSelectedIndex(),
249 tabIdx));
250 return;
251 }
252 tabIdx++;
253 }
254 }
255 }
256
257
258 protected void writeFormStart(ResponseWriter writer,
259 FacesContext facesContext,
260 UIComponent tabbedPane)
261 throws IOException
262 {
263 ViewHandler viewHandler = facesContext.getApplication().getViewHandler();
264 String viewId = facesContext.getViewRoot().getViewId();
265 String actionURL = viewHandler.getActionURL(facesContext, viewId);
266
267 writer.startElement(HTML.FORM_ELEM, null);
269 writer.writeAttribute(HTML.NAME_ATTR, tabbedPane.getClientId(facesContext) + AUTO_FORM_SUFFIX, null);
270 writer.writeAttribute(HTML.STYLE_ATTR, "display:inline", null);
271 writer.writeAttribute(HTML.METHOD_ATTR, "post", null);
272 writer.writeURIAttribute(HTML.ACTION_ATTR,
273 facesContext.getExternalContext().encodeActionURL(actionURL),
274 null);
275 writer.flush();
276 }
277
278
279 protected void writeTableStart(ResponseWriter writer,
280 FacesContext facesContext,
281 HtmlPanelTabbedPane tabbedPane)
282 throws IOException
283 {
284 String oldStyle = tabbedPane.getStyle();
285 if (oldStyle == null)
286 {
287 tabbedPane.setStyle(TABLE_STYLE);
288 }
289 else
290 {
291 tabbedPane.setStyle(TABLE_STYLE + "; " + oldStyle);
292 }
293
294 String oldBgColor = tabbedPane.getBgcolor();
295 tabbedPane.setBgcolor(null);
296
297 writer.startElement(HTML.TABLE_ELEM, tabbedPane);
298 writer.writeAttribute(HTML.CELLSPACING_ATTR, "0", null);
299 HtmlRendererUtils.renderHTMLAttributes(writer, tabbedPane, HTML.TABLE_PASSTHROUGH_ATTRIBUTES);
300 writer.flush();
301
302 tabbedPane.setStyle(oldStyle);
303 tabbedPane.setBgcolor(oldBgColor);
304 }
305
306
307 protected void writeHeaderCell(ResponseWriter writer,
308 FacesContext facesContext,
309 HtmlPanelTabbedPane tabbedPane,
310 HtmlPanelTab tab,
311 int tabIndex,
312 boolean active,
313 boolean disabled)
314 throws IOException
315 {
316 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
317 HtmlRendererUtils.writePrettyIndent(facesContext);
318 writer.startElement(HTML.TD_ELEM, tabbedPane);
319 if (active)
320 {
321 writer.writeAttribute(HTML.STYLE_ATTR,
322 ACTIVE_HEADER_CELL_STYLE + "background-color:" + tabbedPane.getBgcolor(),
323 null);
324
325 HtmlRendererUtils.renderHTMLAttribute(writer, tabbedPane, "activeTabStyleClass", HTML.STYLE_CLASS_ATTR);
326 }
327 else if (disabled)
328 {
329 writer.writeAttribute(HTML.STYLE_ATTR,
330 INACTIVE_HEADER_CELL_STYLE,
331 null);
332 HtmlRendererUtils.renderHTMLAttribute(writer, tabbedPane, "disabledTabStyleClass", HTML.STYLE_CLASS_ATTR);
333 }
334 else
335 {
336 writer.writeAttribute(HTML.STYLE_ATTR,
337 INACTIVE_HEADER_CELL_STYLE,
338 null);
339 HtmlRendererUtils.renderHTMLAttribute(writer, tabbedPane, "inactiveTabStyleClass", HTML.STYLE_CLASS_ATTR);
340 }
341
342
343 String label = tab.getLabel();
344 if (label == null || label.length() == 0)
345 {
346 label = "Tab " + tabIndex;
347 }
348
349 if (disabled) {
350 writer.startElement(HTML.LABEL_ELEM, tabbedPane);
351 writer.writeAttribute(HTML.NAME_ATTR, tabbedPane.getClientId(facesContext) + "." + tabIndex, null);
352 writer.writeAttribute(HTML.STYLE_ATTR, BUTTON_STYLE_DISABLED, null);
353 writer.writeText(label, null);
354 writer.endElement(HTML.LABEL_ELEM);
355 } else {
356 writer.startElement(HTML.INPUT_ELEM, tabbedPane);
358 writer.writeAttribute(HTML.TYPE_ATTR, "submit", null);
359 writer.writeAttribute(HTML.NAME_ATTR, tabbedPane.getClientId(facesContext) + "." + tabIndex, null);
360 writer.writeAttribute(HTML.VALUE_ATTR, label, null);
361
362 if (active)
363 {
364 writer.writeAttribute(HTML.STYLE_ATTR,
365 BUTTON_STYLE_ACTIVE + "background-color:" + tabbedPane.getBgcolor(),
366 null);
367 }
368 else
369 {
370 writer.writeAttribute(HTML.STYLE_ATTR,
371 BUTTON_STYLE_INACTIVE,
372 null);
373 }
374 writer.endElement(HTML.INPUT_ELEM);
375 }
376 writer.endElement(HTML.TD_ELEM);
377 }
378
379
380 protected void writeSubHeaderCells(ResponseWriter writer,
381 FacesContext facesContext,
382 HtmlPanelTabbedPane tabbedPane,
383 int visibleTabCount,
384 int visibleTabSelectedIndex,
385 boolean disabled)
386 throws IOException
387 {
388 StringBuffer buf = new StringBuffer ();
389 for (int i = 0, cnt = visibleTabCount + 1; i < cnt; i++)
390 {
391 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
392 HtmlRendererUtils.writePrettyIndent(facesContext);
393 writer.startElement(HTML.TD_ELEM, tabbedPane);
394 buf.setLength(0);
395 buf.append(SUB_HEADER_CELL_STYLE);
396 buf.append("border-top:").append(i == visibleTabSelectedIndex ? NO_BORDER_STYLE : BORDER_STYLE);
397 buf.append("border-right:").append(i + 1 < cnt ? NO_BORDER_STYLE : BORDER_STYLE);
398 buf.append("border-left:").append(i > 0 ? NO_BORDER_STYLE : BORDER_STYLE);
399 buf.append("background-color:").append(tabbedPane.getBgcolor());
400 writer.writeAttribute(HTML.STYLE_ATTR, buf.toString(), null);
401
402 if (i == visibleTabSelectedIndex) {
403 HtmlRendererUtils.renderHTMLAttribute(writer, tabbedPane, "activeSubStyleClass", HTML.STYLE_CLASS_ATTR);
404 } else {
405 HtmlRendererUtils.renderHTMLAttribute(writer, tabbedPane, "inactiveSubStyleClass", HTML.STYLE_CLASS_ATTR);
406 }
407
408 writer.write(" ");
409 writer.endElement(HTML.TD_ELEM);
410 }
411 }
412
413
414 protected void writeTabCell(ResponseWriter writer,
415 FacesContext facesContext,
416 HtmlPanelTabbedPane tabbedPane,
417 int tabCount,
418 int selectedIndex)
419 throws IOException
420 {
421 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
422 HtmlRendererUtils.writePrettyIndent(facesContext);
423 writer.startElement(HTML.TD_ELEM, tabbedPane);
424 writer.writeAttribute(HTML.COLSPAN_ATTR, Integer.toString(tabCount + 1), null);
425 writer.writeAttribute(HTML.STYLE_ATTR, TAB_CELL_STYLE + "background-color:" + tabbedPane.getBgcolor(), null);
426 HtmlRendererUtils.renderHTMLAttribute(writer, tabbedPane, "tabContentStyleClass", HTML.STYLE_CLASS_ATTR);
427
428 int tabIdx = 0;
429 List children = tabbedPane.getChildren();
430 for (int i = 0, len = children.size(); i < len; i++)
431 {
432 UIComponent child = getUIComponent((UIComponent)children.get(i));
433 if (child instanceof HtmlPanelTab)
434 {
435 if (tabIdx == selectedIndex)
436 {
437 RendererUtils.renderChild(facesContext, child);
438 }
439 tabIdx++;
440 }
441 else
442 {
443 RendererUtils.renderChild(facesContext, child);
444 }
445 }
446
447 writer.endElement(HTML.TD_ELEM);
448 }
449
450 private UIComponent getUIComponent(UIComponent uiComponent)
451 {
452 if (uiComponent instanceof UIForm || uiComponent instanceof UINamingContainer)
453 {
454 List children = uiComponent.getChildren();
455 for (int i = 0, len = children.size(); i < len; i++)
456 {
457 uiComponent = getUIComponent((UIComponent)children.get(i));
458 }
459 }
460 return uiComponent;
461 }
462
463
464 protected void writeFormEnd(ResponseWriter writer,
465 FacesContext facesContext)
466 throws IOException
467 {
468 ViewHandler viewHandler = facesContext.getApplication().getViewHandler();
470 viewHandler.writeState(facesContext);
471
472 writer.endElement(HTML.FORM_ELEM);
473 }
474
475
476 protected boolean isDisabled(FacesContext facesContext, UIComponent uiComponent)
477 {
478 return !UserRoleUtils.isEnabledOnUserRole(uiComponent);
479 }
480 }
481 |
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