Fix #630

ALT-A checks all
ALT-U unchecks all

Adding braces to some if statements that did not have them.

Author: mlh758

src/jquery.multiselect.filter.js

@@ -67,11 +67,21 @@
           // prevent the enter key from submitting the form / closing the widget
           if(e.which === 13) {
             e.preventDefault();
-          } else if(e.which === 82 && e.altKey) {
-            e.preventDefault();
-            $(this).val('').trigger('input', '');
           } else if(e.which === 27) {
             elem.multiselect('instance').close();
+          } else if(e.altKey) {
+            switch(e.which) {
+              case 82:
+                e.preventDefault();
+                $(this).val('').trigger('input', '');
+                break;
+              case 65:
+                elem.multiselect('instance').checkAll();
+                break;
+              case 85:
+                elem.multiselect('instance').uncheckAll();
+                break;
+            }
           }
         },
         input: $.proxy(debounce(this._handler, opts.debounceMS), this),

src/jquery.multiselect.js

@@ -86,10 +86,12 @@
           .html(function() {
             if(o.header === true) {
               var header_lis = '';
-              if(o.showCheckAll)
+              if(o.showCheckAll) {
                 header_lis = '<li><a class="ui-multiselect-all" href="#"><span class="ui-icon ui-icon-check"></span><span>' + o.checkAllText + '</span></a></li>';
-              if(o.showUncheckAll)
+              }
+              if(o.showUncheckAll) {
                 header_lis += '<li><a class="ui-multiselect-none" href="#"><span class="ui-icon ui-icon-closethick"></span><span>' + o.uncheckAllText + '</span></a></li>';
+              }
               return header_lis;
             } else if(typeof o.header === "string") {
               return '<li>' + o.header + '</li>';
@@ -363,10 +365,12 @@
         }
       })
       .delegate('label', 'keydown.multiselect', function(e) {
-        if(e.which === 82)
+        if(e.which === 82) {
           return; //"r" key, often used for reload.
-        if(e.which > 111 && e.which < 124)
+        }
+        if(e.which > 111 && e.which < 124) {
           return; //Keyboard function keys.
+        }
         e.preventDefault();
         switch(e.which) {
           case 9: // tab
@@ -382,6 +386,16 @@
           case 13: // enter
             $(this).find('input')[0].click();
             break;
+          case 65:
+            if(e.altKey) {
+              self.checkAll();
+            }
+            break;
+          case 85:
+            if(e.altKey) {
+              self.uncheckAll();
+            }
+            break;
         }
       })
       .delegate('input[type="checkbox"], input[type="radio"]', 'click.multiselect', function(e) {