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1
16 package org.apache.myfaces.custom.navigation;
17
18 import org.apache.myfaces.renderkit.RendererUtils;
19 import org.apache.myfaces.renderkit.html.HTML;
20 import org.apache.myfaces.renderkit.html.HtmlRendererUtils;
21 import org.apache.myfaces.renderkit.html.ext.HtmlLinkRenderer;
22
23 import org.apache.commons.logging.Log;
24 import org.apache.commons.logging.LogFactory;
25
26 import javax.faces.component.UIComponent;
27 import javax.faces.context.FacesContext;
28 import javax.faces.context.ResponseWriter;
29 import java.io.IOException  ;
30 import java.util.Iterator ;
31 import java.util.List ;
32
33
50 public class HtmlNavigationRenderer
51 extends HtmlLinkRenderer
52 {
53 private static final Log log = LogFactory.getLog(HtmlNavigationRenderer.class);
54
55 private static final Integer ZERO_INTEGER = new Integer (0);
56
57 public boolean getRendersChildren()
58 {
59 return true;
60 }
61
62 public void decode(FacesContext facesContext, UIComponent component)
63 {
64 if (component instanceof HtmlCommandNavigation)
65 {
66 super.decode(facesContext, component);
68 }
69 }
70
71 public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException
72 {
73 if (component instanceof HtmlCommandNavigation)
74 {
75 super.encodeBegin(facesContext, component);
77 }
78 }
79
80 public void encodeChildren(FacesContext facesContext, UIComponent component) throws IOException
81 {
82 if (component instanceof HtmlCommandNavigation)
83 {
84 super.encodeChildren(facesContext, component);
86 }
87 }
88
89 public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException
90 {
91 if (component instanceof HtmlCommandNavigation)
92 {
93 super.encodeEnd(facesContext, component);
95 return;
96 }
97
98 RendererUtils.checkParamValidity(facesContext, component, HtmlPanelNavigation.class);
99 ResponseWriter writer = facesContext.getResponseWriter();
100 HtmlPanelNavigation panelNav = (HtmlPanelNavigation)component;
101
102 if (panelNav.getChildCount() > 0)
103 {
104 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
105 writer.startElement(HTML.TABLE_ELEM, null);
106 HtmlRendererUtils.renderHTMLAttributes(writer, panelNav, HTML.TABLE_PASSTHROUGH_ATTRIBUTES);
107 if (panelNav.getStyle() == null && panelNav.getStyleClass() == null)
108 {
109 writer.writeAttribute(HTML.BORDER_ATTR, ZERO_INTEGER, null);
110 }
111
112 renderChildren(facesContext, writer, panelNav, panelNav.getChildren(), 0);
113
114 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
115 writer.endElement(HTML.TABLE_ELEM);
116 }
117 else
118 {
119 if (log.isWarnEnabled()) log.warn("Navigation panel without children.");
120 }
121 }
122
123
124 protected void renderChildren(FacesContext facesContext,
125 ResponseWriter writer,
126 HtmlPanelNavigation panelNav,
127 List children,
128 int level)
129 throws IOException
130 {
131 for (Iterator it = children.iterator(); it.hasNext(); )
132 {
133 UIComponent child = (UIComponent)it.next();
134 if (!child.isRendered()) continue;
135 if (child instanceof HtmlCommandNavigation)
136 {
137 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
139
140 String style = getNavigationItemStyle(panelNav, (HtmlCommandNavigation)child);
141 String styleClass = getNavigationItemClass(panelNav, (HtmlCommandNavigation)child);
142
143 writer.startElement(HTML.TR_ELEM, null);
144 writer.startElement(HTML.TD_ELEM, null);
145 writeStyleAttributes(writer, style, styleClass);
146
147 if (style != null || styleClass != null)
148 {
149 writer.startElement(HTML.SPAN_ELEM, null);
150 writeStyleAttributes(writer, style, styleClass);
151 }
152 indent(writer, level);
153 child.encodeBegin(facesContext);
154 child.encodeEnd(facesContext);
155 if (style != null || styleClass != null)
156 {
157 writer.endElement(HTML.SPAN_ELEM);
158 }
159
160 writer.endElement(HTML.TD_ELEM);
161 writer.endElement(HTML.TR_ELEM);
162
163 if (child.getChildCount() > 0)
164 {
165 renderChildren(facesContext, writer, panelNav, child.getChildren(), level + 1);
166 }
167 }
168 else
169 {
170 HtmlRendererUtils.writePrettyLineSeparator(facesContext);
172
173 String style = panelNav.getSeparatorStyle();
174 String styleClass = panelNav.getSeparatorClass();
175
176 writer.startElement(HTML.TR_ELEM, null);
177 writer.startElement(HTML.TD_ELEM, null);
178 writeStyleAttributes(writer, style, styleClass);
179
180 if (style != null || styleClass != null)
181 {
182 writer.startElement(HTML.SPAN_ELEM, null);
183 writeStyleAttributes(writer, style, styleClass);
184 }
185 indent(writer, level);
186 RendererUtils.renderChild(facesContext, child);
187 if (style != null || styleClass != null)
188 {
189 writer.endElement(HTML.SPAN_ELEM);
190 }
191
192 writer.endElement(HTML.TD_ELEM);
193 writer.endElement(HTML.TR_ELEM);
194 }
195
196 }
197 }
198
199
200 protected void indent(ResponseWriter writer, int level)
201 throws IOException
202 {
203 StringBuffer buf = new StringBuffer ();
204 for (int i = 0; i < level; i++)
205 {
206 buf.append("    ");
207 }
208 writer.write(buf.toString());
209 }
210
211
212
213 protected String getNavigationItemStyle(HtmlPanelNavigation navPanel,
214 HtmlCommandNavigation navItem)
215 {
216 if (navItem.isActive())
217 {
218 return navPanel.getActiveItemStyle();
219 }
220 else if (navItem.isOpen())
221 {
222 return navPanel.getOpenItemStyle();
223 }
224 else
225 {
226 return navPanel.getItemStyle();
227 }
228 }
229
230 protected String getNavigationItemClass(HtmlPanelNavigation navPanel,
231 HtmlCommandNavigation navItem)
232 {
233 if (navItem.isActive())
234 {
235 return navPanel.getActiveItemClass();
236 }
237 else if (navItem.isOpen())
238 {
239 return navPanel.getOpenItemClass();
240 }
241 else
242 {
243 return navPanel.getItemClass();
244 }
245 }
246
247
248
249 protected void writeStyleAttributes(ResponseWriter writer,
250 String style,
251 String styleClass)
252 throws IOException
253 {
254 HtmlRendererUtils.renderHTMLAttribute(writer, HTML.STYLE_ATTR, HTML.STYLE_ATTR, style);
255 HtmlRendererUtils.renderHTMLAttribute(writer, HTML.STYLE_CLASS_ATTR, HTML.STYLE_CLASS_ATTR, styleClass);
256 }
257
258
259 protected String getStyle(FacesContext facesContext, UIComponent link)
260 {
261 if (!(link instanceof HtmlCommandNavigation))
262 {
263 throw new IllegalArgumentException ();
264 }
265
266 UIComponent navPanel = link.getParent();
267 while (navPanel != null && !(navPanel instanceof HtmlPanelNavigation))
268 {
269 navPanel = navPanel.getParent();
270 }
271 if (navPanel == null)
272 {
273 throw new IllegalStateException ("HtmlCommandNavigation not nested in HtmlPanelNavigation!?");
274 }
275
276 HtmlCommandNavigation navItem = (HtmlCommandNavigation)link;
277 if (navItem.isActive())
278 {
279 return ((HtmlPanelNavigation)navPanel).getActiveItemStyle();
280 }
281 else if (navItem.isOpen())
282 {
283 return ((HtmlPanelNavigation)navPanel).getOpenItemStyle();
284 }
285 else
286 {
287 return ((HtmlPanelNavigation)navPanel).getItemStyle();
288 }
289 }
290
291
292 protected String getStyleClass(FacesContext facesContext, UIComponent link)
293 {
294 if (!(link instanceof HtmlCommandNavigation))
295 {
296 throw new IllegalArgumentException ();
297 }
298
299 UIComponent navPanel = link.getParent();
300 while (navPanel != null && !(navPanel instanceof HtmlPanelNavigation))
301 {
302 navPanel = navPanel.getParent();
303 }
304 if (navPanel == null)
305 {
306 throw new IllegalStateException ("HtmlCommandNavigation not nested in HtmlPanelNavigation!?");
307 }
308
309 HtmlCommandNavigation navItem = (HtmlCommandNavigation)link;
310 if (navItem.isActive())
311 {
312 return ((HtmlPanelNavigation)navPanel).getActiveItemClass();
313 }
314 else if (navItem.isOpen())
315 {
316 return ((HtmlPanelNavigation)navPanel).getOpenItemClass();
317 }
318 else
319 {
320 return ((HtmlPanelNavigation)navPanel).getItemClass();
321 }
322 }
323
324
325
326 }
327 |
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