lib/dijit/form/_ComboBoxMenu.js.uncompressed.js

   1 define("dijit/form/_ComboBoxMenu", [
   2         "dojo/_base/declare", // declare
   3         "dojo/dom-class", // domClass.add domClass.remove
   4         "dojo/dom-style", // domStyle.get
   5         "dojo/keys", // keys.DOWN_ARROW keys.PAGE_DOWN keys.PAGE_UP keys.UP_ARROW
   6         "../_WidgetBase",
   7         "../_TemplatedMixin",
   8         "./_ComboBoxMenuMixin",
   9         "./_ListMouseMixin"
  10 ], function(declare, domClass, domStyle, keys,
  11                         _WidgetBase, _TemplatedMixin, _ComboBoxMenuMixin, _ListMouseMixin){
  12
  13
  14         // module:
  15         //              dijit/form/_ComboBoxMenu
  16
  17         return declare("dijit.form._ComboBoxMenu",[_WidgetBase, _TemplatedMixin, _ListMouseMixin, _ComboBoxMenuMixin], {
  18                 // summary:
  19                 //              Focus-less menu for internal use in `dijit/form/ComboBox`
  20                 //              Abstract methods that must be defined externally:
  21                 //
  22                 //              - onChange: item was explicitly chosen (mousedown somewhere on the menu and mouseup somewhere on the menu)
  23                 //              - onPage: next(1) or previous(-1) button pressed
  24                 // tags:
  25                 //              private
  26
  27                 templateString: "<div class='dijitReset dijitMenu' data-dojo-attach-point='containerNode' style='overflow: auto; overflow-x: hidden;' role='listbox'>"
  28                                 +"<div class='dijitMenuItem dijitMenuPreviousButton' data-dojo-attach-point='previousButton' role='option'></div>"
  29                                 +"<div class='dijitMenuItem dijitMenuNextButton' data-dojo-attach-point='nextButton' role='option'></div>"
  30                                 +"</div>",
  31
  32                 baseClass: "dijitComboBoxMenu",
  33
  34                 postCreate: function(){
  35                         this.inherited(arguments);
  36                         if(!this.isLeftToRight()){
  37                                 domClass.add(this.previousButton, "dijitMenuItemRtl");
  38                                 domClass.add(this.nextButton, "dijitMenuItemRtl");
  39                         }
  40                 },
  41
  42                 _createMenuItem: function(){
  43                         // note: not using domConstruct.create() because need to specify document
  44                         var item = this.ownerDocument.createElement("div");
  45                         item.className = "dijitReset dijitMenuItem" +(this.isLeftToRight() ? "" : " dijitMenuItemRtl");
  46                         item.setAttribute("role", "option");
  47                         return item;
  48                 },
  49
  50                 onHover: function(/*DomNode*/ node){
  51                         // summary:
  52                         //              Add hover CSS
  53                         domClass.add(node, "dijitMenuItemHover");
  54                 },
  55
  56                 onUnhover: function(/*DomNode*/ node){
  57                         // summary:
  58                         //              Remove hover CSS
  59                         domClass.remove(node, "dijitMenuItemHover");
  60                 },
  61
  62                 onSelect: function(/*DomNode*/ node){
  63                         // summary:
  64                         //              Add selected CSS
  65                         domClass.add(node, "dijitMenuItemSelected");
  66                 },
  67
  68                 onDeselect: function(/*DomNode*/ node){
  69                         // summary:
  70                         //              Remove selected CSS
  71                         domClass.remove(node, "dijitMenuItemSelected");
  72                 },
  73
  74                 _page: function(/*Boolean*/ up){
  75                         // summary:
  76                         //              Handles page-up and page-down keypresses
  77
  78                         var scrollamount = 0;
  79                         var oldscroll = this.domNode.scrollTop;
  80                         var height = domStyle.get(this.domNode, "height");
  81                         // if no item is highlighted, highlight the first option
  82                         if(!this.getHighlightedOption()){
  83                                 this.selectNextNode();
  84                         }
  85                         while(scrollamount<height){
  86                                 var highlighted_option = this.getHighlightedOption();
  87                                 if(up){
  88                                         // stop at option 1
  89                                         if(!highlighted_option.previousSibling ||
  90                                                 highlighted_option.previousSibling.style.display == "none"){
  91                                                 break;
  92                                         }
  93                                         this.selectPreviousNode();
  94                                 }else{
  95                                         // stop at last option
  96                                         if(!highlighted_option.nextSibling ||
  97                                                 highlighted_option.nextSibling.style.display == "none"){
  98                                                 break;
  99                                         }
 100                                         this.selectNextNode();
 101                                 }
 102                                 // going backwards
 103                                 var newscroll = this.domNode.scrollTop;
 104                                 scrollamount += (newscroll-oldscroll)*(up ? -1:1);
 105                                 oldscroll = newscroll;
 106                         }
 107                 },
 108
 109                 handleKey: function(evt){
 110                         // summary:
 111                         //              Handle keystroke event forwarded from ComboBox, returning false if it's
 112                         //              a keystroke I recognize and process, true otherwise.
 113                         switch(evt.keyCode){
 114                                 case keys.DOWN_ARROW:
 115                                         this.selectNextNode();
 116                                         return false;
 117                                 case keys.PAGE_DOWN:
 118                                         this._page(false);
 119                                         return false;
 120                                 case keys.UP_ARROW:
 121                                         this.selectPreviousNode();
 122                                         return false;
 123                                 case keys.PAGE_UP:
 124                                         this._page(true);
 125                                         return false;
 126                                 default:
 127                                         return true;
 128                         }
 129                 }
 130         });
 131 });