clear button for input type = number, fixes #166

CHANGELOG.txt

@@ -4,6 +4,7 @@ X-editable changelog
 
 Version 1.4.4 wip
 ----------------------------
+[bug #166] clear button forinput type = number (vitalets)
 [bug] checklist don't show checked for single value (vitalets)
 [enh #188] added bootstrap datetime (adeg, vitalets)
 [bug] editable-poshytip on inline mode tries to write in $.Poshytip (vitalets)

src/inputs/html5types.js

@@ -123,7 +123,21 @@ Number
             this.setAttr('min');
             this.setAttr('max');
             this.setAttr('step');
-        }
+        },
+        postrender: function() {
+            if(this.$clear) {
+                //can position clear button only here, when form is shown and height can be calculated
+                var h = this.$input.outerHeight() || 20,
+                    delta = (h - this.$clear.height()) / 2;
+                
+                //workaround for plain-popup  
+                if(delta < 3) {
+                   delta = 3; 
+                }
+                //add 12px to offset right for up/down arrows    
+                this.$clear.css({bottom: delta, right: delta + 12});
+            } 
+        }        
     });     
     NumberInput.defaults = $.extend({}, $.fn.editabletypes.text.defaults, {
         tpl: '<input type="number">',