svn commit: r414008 - /struts/shale/branches/mvn_reorg/shale-core/src/main/java/org/apache/shale/view/AbstractFacesBean.java

[craigmcc]

Author: craigmcc
Date: Tue Jun 13 16:58:34 2006
New Revision: 414008

URL: http://svn.apache.org/viewvc?rev=414008&view=rev
Log:
More convenience methods for the convience base class for backing beans.
This integration mirrors r412004 on the trunk, which was committed after
the "mvn_reorg" branch was created.

Modified:
    
struts/shale/branches/mvn_reorg/shale-core/src/main/java/org/apache/shale/view/AbstractFacesBean.java

Modified: 
struts/shale/branches/mvn_reorg/shale-core/src/main/java/org/apache/shale/view/AbstractFacesBean.java
URL: 
http://svn.apache.org/viewvc/struts/shale/branches/mvn_reorg/shale-core/src/main/java/org/apache/shale/view/AbstractFacesBean.java?rev=414008&r1=414007&r2=414008&view=diff
==============================================================================
--- 
struts/shale/branches/mvn_reorg/shale-core/src/main/java/org/apache/shale/view/AbstractFacesBean.java
 (original)
+++ 
struts/shale/branches/mvn_reorg/shale-core/src/main/java/org/apache/shale/view/AbstractFacesBean.java
 Tue Jun 13 16:58:34 2006
@@ -17,11 +17,13 @@
 package org.apache.shale.view;
 
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.Map;
 
 import javax.faces.FactoryFinder;
 import javax.faces.application.Application;
 import javax.faces.application.FacesMessage;
+import javax.faces.component.EditableValueHolder;
 import javax.faces.component.UIComponent;
 import javax.faces.component.UIViewRoot;
 import javax.faces.context.ExternalContext;
@@ -291,6 +293,48 @@
     }
 
 
+    // -------------------------------------------------- Erase Submitted 
Values
+
+
+    /**
+     * <p>Erase submitted values on all <code>EditableValueHolder</code>
+     * components in the current view.  This method should be called if
+     * you have input components bound to data values, submit the form,
+     * and then arbitrarily change the data that the binding points at
+     * without going through the <em>Update Model Values</em> phase of
+     * the request processing lifecycle.</p>
+     */
+    protected void erase() {
+
+        UIComponent view = getFacesContext().getViewRoot();
+        if (view != null) {
+            erase(view);
+        }
+
+    }
+
+
+    /**
+     * <p>Private helper method for <code>erase()</code> that recursively
+     * descends the component tree and performs the required processing.</p>
+     *
+     * @param component The component to be erased
+     */
+    private void erase(UIComponent component) {
+
+        // Erase the component itself (if needed)
+        if (component instanceof EditableValueHolder) {
+            ((EditableValueHolder) component).setSubmittedValue(null);
+        }
+        // Process the facets and children of this component
+        Iterator kids = component.getFacetsAndChildren();
+        while (kids.hasNext()) {
+            erase((UIComponent) kids.next());
+        }
+
+    }
+
+
     // ----------------------------------------------- Request Parameter 
Methods
 
 
@@ -333,7 +377,16 @@
      */
     protected void log(String message) {
 
-        getExternalContext().log(message);
+        FacesContext context = getFacesContext();
+        ExternalContext econtext = null;
+        if (context != null) {
+            econtext = context.getExternalContext();
+        }
+        if (econtext != null) {
+            econtext.log(message);
+        } else {
+            System.out.println(message);
+        }
 
     }
 
@@ -346,7 +399,17 @@
      */
     protected void log(String message, Throwable throwable) {
 
-        getExternalContext().log(message, throwable);
+        FacesContext context = getFacesContext();
+        ExternalContext econtext = null;
+        if (context != null) {
+            econtext = context.getExternalContext();
+        }
+        if (econtext != null) {
+            econtext.log(message, throwable);
+        } else {
+            System.out.println(message);
+            throwable.printStackTrace(System.out);
+        }
 
     }