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1
16 package org.apache.myfaces.custom.tree.renderkit.html;
17
18 import org.apache.myfaces.custom.tree.HtmlTree;
19 import org.apache.myfaces.custom.tree.HtmlTreeColumn;
20 import org.apache.myfaces.custom.tree.HtmlTreeImageCommandLink;
21 import org.apache.myfaces.custom.tree.HtmlTreeNode;
22 import org.apache.myfaces.custom.tree.IconProvider;
23 import org.apache.myfaces.custom.tree.TreeNode;
24 import org.apache.myfaces.renderkit.RendererUtils;
25 import org.apache.myfaces.renderkit.html.HTML;
26 import org.apache.myfaces.renderkit.html.HtmlRendererUtils;
27 import org.apache.myfaces.renderkit.html.HtmlTableRendererBase;
28 import org.apache.myfaces.util.ArrayUtils;
29 import org.apache.myfaces.util.StringUtils;
30
31 import javax.faces.component.UIColumn;
32 import javax.faces.component.UIComponent;
33 import javax.faces.context.FacesContext;
34 import javax.faces.context.ResponseWriter;
35
36 import java.io.IOException  ;
37 import java.util.ArrayList ;
38 import java.util.Iterator ;
39 import java.util.List ;
40
41
63 public class HtmlTreeRenderer extends HtmlTableRendererBase
64 {
65
66 private static final Integer ZERO = new Integer (0);
67
68 private static final String DEFAULT_IMAGE_ICON_FOLDER = "images/folder.gif";
69
70 public boolean getRendersChildren()
71 {
72 return true;
73 }
74
75 public void encodeBegin(FacesContext facesContext, UIComponent uiComponent) throws IOException
76 {
77 }
79
80 public void encodeChildren(FacesContext facesContext, UIComponent component) throws IOException
81 {
82 }
84
85 public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException
86 {
87 RendererUtils.checkParamValidity(facesContext, component, HtmlTree.class);
88 ResponseWriter writer = facesContext.getResponseWriter();
89 HtmlTree tree = (HtmlTree) component;
90
91 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
92 writer.startElement(HTML.TABLE_ELEM, null);
93 HtmlRendererUtils.renderHTMLAttributes(writer, tree, HTML.TABLE_PASSTHROUGH_ATTRIBUTES);
94 writer.writeAttribute(HTML.BORDER_ATTR, ZERO, null);
95 writer.writeAttribute(HTML.CELLSPACING_ATTR, ZERO, null);
96 writer.writeAttribute(HTML.CELLPADDING_ATTR, ZERO, null);
97
98 int maxLevel = tree.getRootNode().getMaxChildLevel();
99
100 ArrayList childNodes = new ArrayList (1);
102 childNodes.add(tree.getRootNode());
103
104 renderFacet(facesContext, writer, component, true, maxLevel);
106
107 renderChildren(facesContext, writer, tree, childNodes, maxLevel, tree.getIconProvider());
109
110 renderFacet(facesContext, writer, component, false, maxLevel);
112 writer.endElement(HTML.TABLE_ELEM);
113 }
114
115
127 protected void renderFacet(FacesContext facesContext, ResponseWriter writer, UIComponent component, boolean header, int maxLevel)
128 throws IOException
129 {
130 int colspan = 0;
131 boolean hasColumnFacet = false;
132 for (Iterator it = component.getChildren().iterator(); it.hasNext();)
133 {
134 UIComponent uiComponent = (UIComponent) it.next();
135 if ((uiComponent.getFamily().equals(UIColumn.COMPONENT_FAMILY))
136 && ((UIColumn) uiComponent).isRendered())
137 {
138 colspan++;
139 if (!hasColumnFacet)
140 {
141 hasColumnFacet = header ? ((UIColumn) uiComponent).getHeader() != null : ((UIColumn) uiComponent)
142 .getFooter() != null;
143 }
144 }
145 else if ((uiComponent.getFamily().equals(HtmlTreeColumn.COMPONENT_FAMILY))
146 && ((HtmlTreeColumn) uiComponent).isRendered())
147 {
148 colspan += maxLevel + 3;
149 if (!hasColumnFacet)
150 {
151 hasColumnFacet = header ? ((UIColumn) uiComponent).getHeader() != null : ((UIColumn) uiComponent)
152 .getFooter() != null;
153 }
154 }
155 }
156
157 UIComponent facet = header ? (UIComponent) component.getFacets().get(HEADER_FACET_NAME)
158 : (UIComponent) component.getFacets().get(FOOTER_FACET_NAME);
159 if (facet != null || hasColumnFacet)
160 {
161 String elemName = header ? HTML.THEAD_ELEM : HTML.TFOOT_ELEM;
163
164 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
165 writer.startElement(elemName, component);
166 if (header)
167 {
168 String headerStyleClass = getHeaderClass(component);
169 if (facet != null)
170 renderTableHeaderRow(facesContext, writer, component, facet, headerStyleClass, colspan);
171 if (hasColumnFacet)
172 renderColumnHeaderRow(facesContext, writer, component, headerStyleClass, maxLevel);
173 }
174 else
175 {
176 String footerStyleClass = getFooterClass(component);
177 if (hasColumnFacet)
178 renderColumnFooterRow(facesContext, writer, component, footerStyleClass, maxLevel);
179 if (facet != null)
180 renderTableFooterRow(facesContext, writer, component, facet, footerStyleClass, colspan);
181 }
182 writer.endElement(elemName);
183 }
184 }
185
186 protected void renderColumnHeaderRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
187 String headerStyleClass, int maxLevel) throws IOException
188 {
189 renderColumnHeaderOrFooterRow(facesContext, writer, component, headerStyleClass, true, maxLevel);
190 }
191
192 protected void renderColumnFooterRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
193 String footerStyleClass, int maxLevel) throws IOException
194 {
195 renderColumnHeaderOrFooterRow(facesContext, writer, component, footerStyleClass, false, maxLevel);
196 }
197
198 private void renderColumnHeaderOrFooterRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
199 String styleClass, boolean header, int maxLevel) throws IOException
200 {
201 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
202 writer.startElement(HTML.TR_ELEM, component);
203 for (Iterator it = component.getChildren().iterator(); it.hasNext();)
204 {
205 UIComponent uiComponent = (UIComponent) it.next();
206 if ((uiComponent.getFamily().equals(UIColumn.COMPONENT_FAMILY))
207 && ((UIColumn) uiComponent).isRendered())
208 {
209 if (header)
210 {
211 renderColumnHeaderCell(facesContext, writer, (UIColumn) uiComponent, styleClass, 0);
212 }
213 else
214 {
215 renderColumnFooterCell(facesContext, writer, (UIColumn) uiComponent, styleClass, 0);
216 }
217 }
218 else if ((uiComponent.getFamily().equals(HtmlTreeColumn.COMPONENT_FAMILY))
219 && ((HtmlTreeColumn) uiComponent).isRendered())
220 {
221 if (header)
222 {
223 renderColumnHeaderCell(facesContext, writer, (UIColumn) uiComponent, styleClass, maxLevel + 3);
224 }
225 else
226 {
227 renderColumnFooterCell(facesContext, writer, (UIColumn) uiComponent, styleClass, maxLevel + 3);
228 }
229 }
230 }
231 writer.endElement(HTML.TR_ELEM);
232 }
233
234
247 protected void renderChildren(FacesContext facesContext, ResponseWriter writer, HtmlTree tree, List children,
248 int maxLevel, IconProvider iconProvider) throws IOException
249 {
250 renderChildren(facesContext, writer, tree, children, maxLevel, iconProvider, 0);
251 }
252
253
267 protected void renderChildren(FacesContext facesContext, ResponseWriter writer, HtmlTree tree, List children,
268 int maxLevel, IconProvider iconProvider, int rowClassIndex) throws IOException
269 {
270 String rowClasses = tree.getRowClasses();
271 String columnClasses = tree.getColumnClasses();
272
273 String [] rowClassesArray = (rowClasses == null) ? ArrayUtils.EMPTY_STRING_ARRAY : StringUtils.trim(StringUtils
274 .splitShortString(rowClasses, ','));
275 int rowClassesCount = rowClassesArray.length;
276
277 String [] columnClassesArray = (columnClasses == null) ? ArrayUtils.EMPTY_STRING_ARRAY : StringUtils
278 .trim(StringUtils.splitShortString(columnClasses, ','));
279 int columnClassesCount = columnClassesArray.length;
280 int columnClassIndex = 0;
281
282 for (Iterator it = children.iterator(); it.hasNext();)
283 {
284 HtmlTreeNode child = (HtmlTreeNode) it.next();
285
286 if (!child.isRendered())
287 {
288 continue;
289 }
290 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
291
292 writer.startElement(HTML.TR_ELEM, null);
293
294 if (rowClassIndex < rowClassesCount)
295 {
296 writer.writeAttribute(HTML.CLASS_ATTR, rowClassesArray[rowClassIndex], null);
297 }
298 if (rowClassesCount > 0)
299 {
300 rowClassIndex++;
301 rowClassIndex = rowClassIndex % rowClassesCount;
302 }
303
304 if (null != tree.getVar())
305 {
306 facesContext.getExternalContext().getSessionMap().put(tree.getVar(),
307 ((TreeNode) child.getUserObject()).getUserObject());
308 }
309
310 List componentChildren = tree.getChildren();
311 if ((null != componentChildren) && (componentChildren.size() > 0))
312 {
313 for (int j = 0, size = tree.getChildCount(); j < size; j++)
314 {
315 UIComponent componentChild = (UIComponent) componentChildren.get(j);
316 if ((componentChild.getFamily().equals(UIColumn.COMPONENT_FAMILY))
317 && ((UIColumn) componentChild).isRendered())
318 {
319 writer.startElement(HTML.TD_ELEM, tree);
320 if (columnClassIndex < columnClassesCount)
321 {
322 writer.writeAttribute(HTML.CLASS_ATTR, columnClassesArray[columnClassIndex], null);
323 }
324 if (columnClassesCount > 0)
325 {
326 columnClassIndex++;
327 columnClassIndex = columnClassIndex % columnClassesCount;
328 }
329 RendererUtils.renderChild(facesContext, componentChild);
330 writer.endElement(HTML.TD_ELEM);
331 }
332 else if ((componentChild.getFamily().equals(HtmlTreeColumn.COMPONENT_FAMILY))
333 && ((HtmlTreeColumn) componentChild).isRendered())
334 {
335 renderTreeColumnChild(facesContext, writer, componentChild, tree, child, maxLevel, iconProvider);
336 }
337 }
338 }
339 else
340 {
341 renderTreeColumnChild(facesContext, writer, null, tree, child, maxLevel, iconProvider);
342 }
343
344 writer.endElement(HTML.TR_ELEM);
345
346 if (child.getChildCount() > 0)
347 {
348 renderChildren(facesContext, writer, tree, child.getChildren(), maxLevel, iconProvider, rowClassIndex);
349 if (rowClassesCount > 0)
350 {
351 rowClassIndex += (child.getChildCount() % rowClassesCount);
352 rowClassIndex = rowClassIndex % rowClassesCount;
353 }
354 }
355 }
356 }
357
358
373 protected void renderTreeColumnChild(FacesContext facesContext, ResponseWriter writer, UIComponent component,
374 HtmlTree tree, HtmlTreeNode child, int maxLevel, IconProvider iconProvider) throws IOException
375 {
376 String iconClass = tree.getIconClass();
377 int[] layout = child.getLayout();
378 for (int i = 0; i < layout.length - 1; i++)
380 {
381 int state = layout[i];
382 writer.startElement(HTML.TD_ELEM, null);
383 String url = getLayoutImage(tree, state);
384
385 if ((url != null) && (url.length() > 0))
386 {
387
389
407
409 writeImageElement(url, facesContext, writer, child);
411 }
412 writer.endElement(HTML.TD_ELEM);
413
414 }
415
416 writer.startElement(HTML.TD_ELEM, null);
418 int state = layout[layout.length - 1];
419 String url = getLayoutImage(tree, state);
420
421 if (state == HtmlTreeNode.CHILD || state == HtmlTreeNode.CHILD_FIRST || state == HtmlTreeNode.CHILD_LAST)
422 {
423 writeImageElement(url, facesContext, writer, child);
425 }
426 else
427 {
428 HtmlTreeImageCommandLink expandCollapse = (HtmlTreeImageCommandLink) child
429 .getExpandCollapseCommand(facesContext);
430 expandCollapse.setImage(getLayoutImage(tree, layout[layout.length - 1]));
431
432 expandCollapse.encodeBegin(facesContext);
433 expandCollapse.encodeEnd(facesContext);
434 }
435 writer.endElement(HTML.TD_ELEM);
436
437 int labelColSpan = maxLevel - child.getLevel() + 1;
438
439 if (iconProvider != null)
441 {
442 url = iconProvider.getIconUrl(child.getUserObject(), child.getChildCount(), child.isLeaf(facesContext));
443 }
444 else
445 {
446 if (!child.isLeaf(facesContext))
447 {
448 url = HtmlTree.getDefaultImagePath( DEFAULT_IMAGE_ICON_FOLDER );
450 }
451 else
452 {
453 url = null;
454 }
455 }
456
457 if ((url != null) && (url.length() > 0))
458 {
459 writer.startElement(HTML.TD_ELEM, null);
460 if (iconClass != null)
461 {
462 writer.writeAttribute(HTML.CLASS_ATTR, iconClass, null);
463 }
464 writeImageElement(url, facesContext, writer, child);
465 writer.endElement(HTML.TD_ELEM);
466 }
467 else
468 {
469 labelColSpan++;
471 }
472
473 writer.startElement(HTML.TD_ELEM, null);
475 writer.writeAttribute(HTML.COLSPAN_ATTR, new Integer (labelColSpan), null);
476 if (child.isSelected() && tree.getSelectedNodeClass() != null)
477 {
478 writer.writeAttribute(HTML.CLASS_ATTR, tree.getSelectedNodeClass(), null);
479 }
480 else if (!child.isSelected() && tree.getNodeClass() != null)
481 {
482 writer.writeAttribute(HTML.CLASS_ATTR, tree.getNodeClass(), null);
483 }
484
485 List componentChildren = null;
486 if (null != component)
487 {
488 componentChildren = component.getChildren();
489 }
490 if ((null != componentChildren) && (componentChildren.size() > 0))
491 {
492 for (int k = 0; k < componentChildren.size(); k++)
493 {
494 UIComponent componentChild = (UIComponent) componentChildren.get(k);
495 RendererUtils.renderChild(facesContext, componentChild);
496 }
497 }
498 else
499 {
500 child.encodeBegin(facesContext);
501 child.encodeEnd(facesContext);
502 }
503 writer.endElement(HTML.TD_ELEM);
504 }
505
506 private void writeImageElement(String url, FacesContext facesContext, ResponseWriter writer, HtmlTreeNode child)
507 throws IOException
508 {
509 writer.startElement(HTML.IMG_ELEM, child);
510 String src = facesContext.getApplication().getViewHandler().getResourceURL(facesContext, url);
511 writer.writeAttribute(HTML.SRC_ATTR, src, null);
523 writer.writeAttribute(HTML.BORDER_ATTR, ZERO, null);
524
525 HtmlRendererUtils.renderHTMLAttributes(writer, child, HTML.IMG_PASSTHROUGH_ATTRIBUTES);
526
527 writer.endElement(HTML.IMG_ELEM);
528 }
529
530 protected String getLayoutImage(HtmlTree tree, int state)
531 {
532 switch (state)
533 {
534 case HtmlTreeNode.OPEN:
535 return tree.getIconNodeOpenMiddle();
536 case HtmlTreeNode.OPEN_FIRST:
537 return tree.getIconNodeOpenFirst();
538 case HtmlTreeNode.OPEN_LAST:
539 return tree.getIconNodeOpenLast();
540 case HtmlTreeNode.OPEN_SINGLE:
541 return tree.getIconNodeOpen();
542 case HtmlTreeNode.CLOSED:
543 return tree.getIconNodeCloseMiddle();
544 case HtmlTreeNode.CLOSED_FIRST:
545 return tree.getIconNodeCloseFirst();
546 case HtmlTreeNode.CLOSED_LAST:
547 return tree.getIconNodeCloseLast();
548 case HtmlTreeNode.CLOSED_SINGLE:
549 return tree.getIconNodeClose();
550 case HtmlTreeNode.CHILD:
551 return tree.getIconChildMiddle();
552 case HtmlTreeNode.CHILD_FIRST:
553 return tree.getIconChildFirst();
554 case HtmlTreeNode.CHILD_LAST:
555 return tree.getIconChildLast();
556 case HtmlTreeNode.LINE:
557 return tree.getIconLine();
558 case HtmlTreeNode.EMPTY:
559 return tree.getIconNoline();
560 default:
561 return tree.getIconNoline();
562 }
563 }
564 } |
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