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16 package org.apache.myfaces.custom.navmenu;
17
18 import org.apache.commons.logging.LogFactory;
19 import org.apache.commons.logging.Log;
20 import org.apache.myfaces.component.UserRoleUtils;
21
22 import javax.faces.component.UIComponent;
23 import javax.faces.component.UISelectItems;
24 import javax.faces.context.FacesContext;
25 import java.util.*;
26
27
47 public class NavigationMenuUtils
48 {
49 private static final Log log = LogFactory.getLog(NavigationMenuUtils.class);
50
51 public static List getNavigationMenuItemList(UIComponent uiComponent)
52 {
53 List list = new ArrayList(uiComponent.getChildCount());
54 for (Iterator children = uiComponent.getChildren().iterator(); children.hasNext(); )
55 {
56 UIComponent child = (UIComponent)children.next();
57 if (child instanceof UINavigationMenuItem)
58 {
59 NavigationMenuItem item;
60 Object  value = ((UINavigationMenuItem)child).getValue();
61 if (value != null)
62 {
63 if (!(value instanceof NavigationMenuItem))
65 {
66 FacesContext facesContext = FacesContext.getCurrentInstance();
67 throw new IllegalArgumentException ("Value binding of UINavigationMenuItem with id " + child.getClientId(facesContext) + " does not reference an Object of type NavigationMenuItem");
68 }
69 item = (NavigationMenuItem)value;
70 }
71 else
72 {
73 UINavigationMenuItem uiItem = (UINavigationMenuItem)child;
74 String label = uiItem.getItemLabel();
75 if (label == null && uiItem.getItemValue() != null)
76 {
77 label = uiItem.getItemValue().toString();
78 }
79 item = new NavigationMenuItem(uiItem.getItemValue(),
80 label,
81 uiItem.getItemDescription(),
82 uiItem.isItemDisabled() || ! UserRoleUtils.isEnabledOnUserRole(uiItem),
83 uiItem.isRendered(),
84 uiItem.getAction(),
85 uiItem.getIcon(),
86 uiItem.isSplit());
87 }
88 list.add(item);
89 if (child.getChildCount() > 0)
90 {
91 List l = getNavigationMenuItemList(child);
92 item.setNavigationMenuItems((NavigationMenuItem[]) l.toArray(new NavigationMenuItem[l.size()]));
93 }
94 }
95 else if (child instanceof UISelectItems)
96 {
97 Object value = ((UISelectItems)child).getValue();
98 if (value instanceof NavigationMenuItem)
99 {
100 list.add(value);
101 }
102 else if (value instanceof NavigationMenuItem[])
103 {
104 for (int i = 0; i < ((NavigationMenuItem[])value).length; i++)
105 {
106 list.add(((NavigationMenuItem[])value)[i]);
107 }
108 }
109 else if (value instanceof Collection)
110 {
111 for (Iterator it = ((Collection)value).iterator(); it.hasNext();)
112 {
113 Object item = it.next();
114 if (!(item instanceof NavigationMenuItem))
115 {
116 FacesContext facesContext = FacesContext.getCurrentInstance();
117 throw new IllegalArgumentException ("Collection referenced by UINavigationMenuItems with id " + child.getClientId(facesContext) + " does not contain Objects of type NavigationMenuItem");
118 }
119 list.add(item);
120 }
121 }
122 else
123 {
124 FacesContext facesContext = FacesContext.getCurrentInstance();
125 throw new IllegalArgumentException ("Value binding of UINavigationMenuItems with id " + child.getClientId(facesContext) + " does not reference an Object of type NavigationMenuItem, NavigationMenuItem[], Collection or Map");
126 }
127 }
128 else
129 {
130 FacesContext facesContext = FacesContext.getCurrentInstance();
131 log.error("Invalid child with id " + child.getClientId(facesContext) + "of component with id : "+uiComponent.getClientId(facesContext)
132 +" : must be UINavigationMenuItem or UINavigationMenuItems, is of type : "+((child==null)?"null":child.getClass().getName()));
133 }
134 }
135
136 return list;
137 }
138
139 }
140 |
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