js/keyhandler.js

   1 /**
   2   * Allows moving around inputs/select by Ctrl+arrows
   3   *
   4   * @param   object   event data
   5   */
   6 function onKeyDownArrowsHandler(e)
   7 {
   8     e = e||window.event;
   9     var o = (e.srcElement||e.target);
  10     if (!o) return;
  11     if (o.tagName != "TEXTAREA" && o.tagName != "INPUT" && o.tagName != "SELECT") return;
  12     if (navigator.userAgent.toLowerCase().indexOf('applewebkit/') != -1) {
  13         if (e.ctrlKey || e.shiftKey || !e.altKey) return;
  14     } else {
  15         if (!e.ctrlKey || e.shiftKey || e.altKey) return;
  16     }
  17     if (!o.id) return;
  18
  19     var pos = o.id.split("_");
  20     if (pos[0] != "field" || typeof pos[2] == "undefined") return;
  21
  22     var x = pos[2], y=pos[1];
  23
  24     // skip non existent fields
  25     for (i=0; i<10; i++)
  26     {
  27         if (switch_movement) {
  28             switch(e.keyCode) {
  29                 case 38: x--; break; // up
  30                 case 40: x++; break; // down
  31                 case 37: y--; break; // left
  32                 case 39: y++; break; // right
  33                 default: return;
  34             }
  35         } else {
  36             switch(e.keyCode) {
  37                 case 38: y--; break; // up
  38                 case 40: y++; break; // down
  39                 case 37: x--; break; // left
  40                 case 39: x++; break; // right
  41                 default: return;
  42             }
  43         }
  44
  45         var id = "field_" + y + "_" + x;
  46         var nO = document.getElementById(id);
  47         if (!nO) {
  48             var id = "field_" + y + "_" + x + "_0";
  49             var nO = document.getElementById(id);
  50         }
  51         if (nO) break;
  52     }
  53
  54     if (!nO) return;
  55     nO.focus();
  56     if (nO.tagName != 'SELECT') {
  57         nO.select();
  58     }
  59     e.returnValue = false;
  60 }