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1
16 package org.apache.myfaces.custom.navigation;
17
18 import org.apache.myfaces.component.html.ext.HtmlCommandLink;
19
20 import org.apache.commons.logging.Log;
21 import org.apache.commons.logging.LogFactory;
22
23 import javax.faces.component.UIComponent;
24 import javax.faces.context.FacesContext;
25 import javax.faces.event.AbortProcessingException;
26 import javax.faces.event.ActionEvent;
27 import javax.faces.event.FacesEvent;
28 import javax.faces.event.PhaseId;
29 import java.util.Iterator  ;
30 import java.util.List ;
31
32
38 public class HtmlCommandNavigation
39 extends HtmlCommandLink
40 {
41 private static final Log log = LogFactory.getLog(HtmlCommandNavigation.class);
42
43 private boolean _open = false;
44 private boolean _active = false;
45
46 public boolean isImmediate()
47 {
48 return true;
50 }
51
52 public void setImmediate(boolean immediate)
53 {
54 if (log.isWarnEnabled()) log.warn("Immediate property of HtmlCommandNavigation cannot be set --> ignored.");
55 }
56
57 public boolean isOpen()
58 {
59 return _open;
60 }
61
62 public void setOpen(boolean open)
63 {
64 _open = open;
65 }
66
67 public boolean isActive()
68 {
69 return _active;
70 }
71
72 public void setActive(boolean active)
73 {
74 _active = active;
75 }
76
77
80 public boolean isRendered()
81 {
82 if (! super.isRendered()) {
83 return false;
84 }
85 UIComponent parent = getParent();
86 while (parent != null)
87 {
88 if (parent instanceof HtmlCommandNavigation)
89 {
90 if (!((HtmlCommandNavigation)parent).isOpen())
91 {
92 return false;
93 }
94 }
95
96 if (parent instanceof HtmlPanelNavigation)
97 {
98 break;
99 }
100 else
101 {
102 parent = parent.getParent();
103 }
104 }
105
106 return true;
107 }
108
109
110 public void toggleOpen()
111 {
112 if (isOpen())
113 {
114 if (getChildCount() > 0)
115 {
116 setOpen(false);
118 }
119 }
120 else
121 {
122 UIComponent parent = getParent();
123
124 closeAllChildren(parent.getChildren().iterator());
126
127 UIComponent p = parent;
129 while (p != null && !(p instanceof HtmlPanelNavigation))
130 {
131 if (p instanceof HtmlCommandNavigation)
132 {
133 ((HtmlCommandNavigation)p).setOpen(true);
134 }
135 p = p.getParent();
136 }
137
139 if (!hasCommandNavigationChildren())
140 {
141 if (!(p instanceof HtmlPanelNavigation))
143 {
144 log.error("HtmlCommandNavigation without parent HtmlPanelNavigation ?!");
145 }
146 else
147 {
148 deactivateAllChildren(p.getChildren().iterator());
150 }
151 setActive(true);
153 }
154 else
155 {
156 setOpen(true);
158 }
159 }
160 }
161
162 private boolean hasCommandNavigationChildren()
163 {
164 if (getChildCount() == 0)
165 {
166 return false;
167 }
168 List list = getChildren();
169 for (int i = 0, sizei = list.size(); i < sizei; i++)
170 {
171 if (list.get(i) instanceof HtmlCommandNavigation)
172 {
173 return true;
174 }
175 }
176 return false;
177 }
178
179
180 private static void deactivateAllChildren(Iterator children)
181 {
182 while (children.hasNext())
183 {
184 UIComponent ni = (UIComponent)children.next();
185 if (ni instanceof HtmlCommandNavigation)
186 {
187 ((HtmlCommandNavigation)ni).setActive(false);
188 if (ni.getChildCount() > 0)
189 {
190 deactivateAllChildren(ni.getChildren().iterator());
191 }
192 }
193 }
194 }
195
196 private static void closeAllChildren(Iterator children)
197 {
198 while (children.hasNext())
199 {
200 UIComponent ni = (UIComponent)children.next();
201 if (ni instanceof HtmlCommandNavigation)
202 {
203 ((HtmlCommandNavigation)ni).setOpen(false);
204 if (ni.getChildCount() > 0)
205 {
206 closeAllChildren(ni.getChildren().iterator());
207 }
208 }
209 }
210 }
211
212
213 public void broadcast(FacesEvent event) throws AbortProcessingException
214 {
215 if (event instanceof ActionEvent)
216 {
217 ActionEvent actionEvent = (ActionEvent)event;
218 if (actionEvent.getPhaseId() == PhaseId.APPLY_REQUEST_VALUES)
219 {
220 HtmlCommandNavigation navItem = (HtmlCommandNavigation)actionEvent.getComponent();
221 navItem.toggleOpen();
222 FacesContext.getCurrentInstance().renderResponse();
223 }
224 }
225 super.broadcast(event);
226 }
227
228
229 public Object saveState(FacesContext context)
230 {
231 Object values[] = new Object [3];
232 values[0] = super.saveState(context);
233 values[1] = Boolean.valueOf(_open);
234 values[2] = Boolean.valueOf(_active);
235 return ((Object ) (values));
236 }
237
238 public void restoreState(FacesContext context, Object state)
239 {
240 Object values[] = (Object [])state;
241 super.restoreState(context, values[0]);
242 _open = ((Boolean )values[1]).booleanValue();
243 _active = ((Boolean )values[2]).booleanValue();
244 }
245
246
247
249 public static final String COMPONENT_TYPE = "org.apache.myfaces.HtmlCommandNavigation";
250 public static final String COMPONENT_FAMILY = "javax.faces.Command";
251 private static final String DEFAULT_RENDERER_TYPE = "javax.faces.Link";
252
253
254 public HtmlCommandNavigation()
255 {
256 setRendererType(DEFAULT_RENDERER_TYPE);
257 }
258
259 public String getFamily()
260 {
261 return COMPONENT_FAMILY;
262 }
263
264
265
267 }
268 |
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