[Checkins] SVN: zc.extjs/branches/dev/src/zc/extjs/resources/util.txt Added some additional documentation of form_dialog that shows the

[Jim Fulton]

Log message for revision 85037:
  Added some additional documentation of form_dialog that shows the
  special care needed when using the result as a handler.
  

Changed:
  U   zc.extjs/branches/dev/src/zc/extjs/resources/util.txt

-=-
Modified: zc.extjs/branches/dev/src/zc/extjs/resources/util.txt
===================================================================
--- zc.extjs/branches/dev/src/zc/extjs/resources/util.txt	2008-03-31 15:11:12 UTC (rev 85036)
+++ zc.extjs/branches/dev/src/zc/extjs/resources/util.txt	2008-03-31 15:11:14 UTC (rev 85037)
@@ -105,15 +105,31 @@
 
 Example::
 
-   add_button = new Ext.Button({
+   var show_dialog = zc.extjs.util.form_dialog({
+          url: 'add_slot_form',
+          window_config: {title: 'Add slot', width: 500},
+          after: function () {
+              slot_tree.getRootNode().reload();
+          }
+       });
+   var add_button = new Ext.Button({
        text: '+',
-       handler: zc.extjs.form_dialog({
+       handler: function () {show_dialog()}
+   });
+
+Notice that we didn't use show_dialog as a handler directly.  If we
+had, it would have been passed a button, which it wouldn't have
+expected.  We could have used createDelegate instead:
+
+   var add_button = new Ext.Button({
+       text: '+',
+       handler: zc.extjs.util.form_dialog({
           url: 'add_slot_form',
           window_config: {title: 'Add slot', width: 500},
           after: function () {
               slot_tree.getRootNode().reload();
           }
-       })
+       }).createDelegate(this, [])
    });