2009/05/20 - Apache Shale has been retired.
For more information, please explore the Attic.
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18 package org.apache.shale.dialog;
19
20 import javax.faces.context.FacesContext;
21
22 /***
23 * <p>Helper class that provides static accessor methods for key objects
24 * provided by the Dialog Manager module.</p>
25 *
26 * @since 1.1.0
27 */
28 public final class DialogHelper {
29
30
31 /***
32 * <p>Private constructor to prevent instantiation.</p>
33 */
34 private DialogHelper() {
35 ;
36 }
37
38 /***
39 * <p>Return the <code>data</code> property of the active
40 * {@link DialogContext} instance for the current request, if any;
41 * otherwise, return <code>null</code>.</p>
42 */
43 public static Object getDialogData() {
44
45 return getDialogData(FacesContext.getCurrentInstance());
46
47 }
48
49
50 /***
51 * <p>Return the <code>data</code> property of the active
52 * {@link DialogContext} instance for the current request, if any;
53 * otherwise, return <code>null</code>.</p>
54 *
55 * @param context <code>FacesContext</code> for the current request
56 */
57 public static Object getDialogData(FacesContext context) {
58
59 DialogContext dcontext = getDialogContext(context);
60 if (dcontext != null) {
61 return dcontext.getData();
62 } else {
63 return null;
64 }
65
66 }
67
68 /***
69 * <p>Return the active {@link DialogContext} instance for the current
70 * request, if any; otherwise, return <code>null</code>.</p>
71 */
72 public static DialogContext getDialogContext() {
73
74 return getDialogContext(FacesContext.getCurrentInstance());
75
76 }
77
78
79 /***
80 * <p>Return the active {@link DialogContext} instance for the current
81 * request, if any; otherwise, return <code>null</code>.</p>
82 *
83 * @param context <code>FacesContext</code> for the current request
84 */
85 public static DialogContext getDialogContext(FacesContext context) {
86
87 DialogContextManager manager = getDialogContextManager(context);
88 if (manager != null) {
89 return manager.getActiveDialogContext(context);
90 } else {
91 return null;
92 }
93
94 }
95
96
97 /***
98 * <p>Return the {@link DialogContextManager} instance for the current
99 * user, creating it first if necessary.</p>
100 */
101 public static DialogContextManager getDialogContextManager() {
102
103 return getDialogContextManager(FacesContext.getCurrentInstance());
104
105 }
106
107
108 /***
109 * <p>Return the {@link DialogContextManager} instance for the current
110 * user, creating it first if necessary.</p>
111 *
112 * @param context <code>FacesContext</code> for the current request
113 */
114 public static DialogContextManager getDialogContextManager(FacesContext context) {
115
116 DialogContextManager manager = (DialogContextManager)
117 context.getApplication().getVariableResolver().
118 resolveVariable(context, Constants.MANAGER_BEAN);
119 return manager;
120
121 }
122
123
124 }