/// <reference path="../../../lib/jquery-1.2.6.js" />
/*
   Masked Input plugin for jQuery
   Copyright (c) 2007-2009 Josh Bush (digitalbush.com)
   Licensed under the MIT license (http://digitalbush.com/projects/masked-input-plugin/#license)
   Version: 1.2.2 (03/09/2009 22:39:06)
*/
(function($) {
   var pasteEventName = ($.browser.msie ? 'paste' : 'input') + ".mask";
   var iPhone = (window.orientation != undefined);

   $.mask = {
      //Predefined character definitions
      definitions: {
         '9': "[0-9]",
         'a': "[A-Za-z]",
         '*': "[A-Za-z0-9]",
         '~': /[\s\S]/,                   // ANYTHING
         '@': /[a-zA-Z0-9\@\.\_\%\+\-]/   // Valid Email address Characters
      }
   };

   $.fn.extend({
      //Helper Function for Caret positioning
      caret: function(begin, end) {
         if (this.length == 0) return;
         if (typeof begin == 'number') {
            end = (typeof end == 'number') ? end : begin;
            return this.each(function() {
               if (this.setSelectionRange) {
                  this.focus();
                  this.setSelectionRange(begin, end);
               } else if (this.createTextRange) {
                  var range = this.createTextRange();
                  range.collapse(true);
                  range.moveEnd('character', end);
                  range.moveStart('character', begin);
                  range.select();
               }
            });
         } else {
            if (this[0].setSelectionRange) {
               begin = this[0].selectionStart;
               end = this[0].selectionEnd;
            } else if (document.selection && document.selection.createRange) {
               var range = document.selection.createRange();
               begin = 0 - range.duplicate().moveStart('character', -100000);
               end = begin + range.text.length;
            }
            return { begin: begin, end: end };
         }
      },
      unmask: function() { return this.trigger("unmask"); },
      mask: function(mask, settings) {
         if (!mask && this.length > 0) {
            var input = $(this[0]);
            var tests = input.data("tests");
            return $.map(input.data("buffer"), function(c, i) {
               return tests[i] ? c : null;
            }).join('');
         }
         settings = $.extend({
            placeholder: "_",
            completed: null
         }, settings);

         var defs = $.mask.definitions;
         var tests = [];
         var partialPosition = mask.length;
         var firstNonMaskPos = null;
         var len = mask.length;

         $.each(mask.split(""), function(i, c) {
            if (c == '?') {
               len--;
               partialPosition = i;
            } else if (defs[c]) {
               tests.push(new RegExp(defs[c]));
               if(firstNonMaskPos==null)
                  firstNonMaskPos =  tests.length - 1;
            } else {
               tests.push(null);
            }
         });

         return this.each(function() {
            var input = $(this);
            var buffer = $.map(mask.split(""), function(c, i) { if (c != '?') return defs[c] ? settings.placeholder : c });
            var ignore = false;            //Variable for ignoring control keys
            var focusText = input.val();

            input.data("buffer", buffer).data("tests", tests);

            function seekNext(pos) {
               while (++pos <= len && !tests[pos]);
               return pos;
            };

            function shiftL(pos) {
               while (!tests[pos] && --pos >= 0);
               for (var i = pos; i < len; i++) {
                  if (tests[i]) {
                     buffer[i] = settings.placeholder;
                     var j = seekNext(i);
                     if (j < len && tests[i].test(buffer[j])) {
                        buffer[i] = buffer[j];
                     } else
                        break;
                  }
               }
               writeBuffer();
               input.caret(Math.max(firstNonMaskPos, pos));
            };

            function shiftR(pos) {
               for (var i = pos, c = settings.placeholder; i < len; i++) {
                  if (tests[i]) {
                     var j = seekNext(i);
                     var t = buffer[i];
                     buffer[i] = c;
                     if (j < len && tests[j].test(t))
                        c = t;
                     else
                        break;
                  }
               }
            };

            function keydownEvent(e) {
               var pos = $(this).caret();
               var k = e.keyCode;
               ignore = (k < 16 || (k > 16 && k < 32) || (k > 32 && k < 41));

               //delete selection before proceeding
               if ((pos.begin - pos.end) != 0 && (!ignore || k == 8 || k == 46))
                  clearBuffer(pos.begin, pos.end);

               if (k == 35) { // end key

                  checkVal();  // Calling twice for end key since end moves the cursor AFTER our keypress.
                  var start = input.caret().begin;
                  var end   = input.caret().end;
                  var LastValidPosition = checkVal();

                     input.caret( LastValidPosition )
                     return false;
                  }

               else if (k == 37) { // left arrow
                  //console.log("left key detected");
                  //console.log("caret:" + input.caret().begin + " " +input.caret().end);
                  //console.log("bufferends: " + buffer[input.caret().begin] + " " + buffer[input.caret().end])
                  //console.log("mask: " + input.mask());
                  //console.log("checkval: " + checkVal());


                  var start = input.caret().begin;
                  var end   = input.caret().end;
                  var LastValidPosition = checkVal();

                  if (end > LastValidPosition) {
                     input.caret( LastValidPosition )
                     return false;
                     };

                  }

               else if (k == 39) { // right arrow
                  //console.log("right key detected");
                  //console.log("caret:" + input.caret().begin + " " +input.caret().end);
                  //console.log("bufferends: " + buffer[input.caret().begin] + " " + buffer[input.caret().end])
                  //console.log("mask: " + input.mask());
                  //console.log("checkval: " + checkVal());

                  var start = input.caret().begin;
                  var end   = input.caret().end;

                  var LastValidPosition = checkVal();

                  if (end > LastValidPosition)
                  {
                     input.caret( LastValidPosition );
                     return false;
                  }

                  if (!buffer[end]) // If we haven't put anything on down on the other side of the seperator yet
                     {
                     var currentLocation = end;
                     var properLocation = seekNext(end);
                     var delta = properLocation-currentLocation-1;
                     //console.log("current: " + currentLocation);
                     //console.log("proper: " + properLocation);
                     //console.log("delta: " + delta);

                     // If we errantly skip over something by going right, go back as far as we should be back.
                     if (delta) { input.caret(input.caret().end-delta); }

                     // If our mask would allow us to move forward, but we haven't typed anything in for the next spot yet, go back 1.
                     else if (!buffer[end]) { input.caret(end-1); }
                     }
                  }


               //backspace, delete, and escape get special treatment
               else if (k == 8 || k == 46 || (iPhone && k == 127)) {//backspace/delete
                  shiftL(pos.begin + (k == 46 ? 0 : -1));
                  return false;
               } else if (k == 27) {//escape
                  input.val(focusText);
                  input.caret(0, checkVal());
                  return false;
               }
            };

            function keypressEvent(e) {
               if (ignore) {
                  ignore = false;
                  //Fixes Mac FF bug on backspace
                  return (e.keyCode == 8) ? false : null;
               }
               e = e || window.event;

               // This doesn't work in Firefox. Delete Key returns the same Keycode as Period -AE 7/29/2010
               //var k = e.which ||e.charCode || e.keyCode || e.which;

               // This does.
               var k = e ? e.which : e.keyCode;

               var pos = $(this).caret();
               if (e.ctrlKey || e.altKey || e.metaKey ) {//Ignore
                  return true;
               } else if ((k >= 32 && k <= 125) || k > 186 ) {//typeable characters
                  var p = seekNext(pos.begin - 1);
                  if (p < len) {
                     var c = String.fromCharCode(k);
                     if (tests[p].test(c)) {
                        shiftR(p);
                        buffer[p] = c;
                        writeBuffer();
                        var next = seekNext(p);
                        $(this).caret(next);
                        if (settings.completed && next == len)
                           settings.completed.call(input);
                     }
                  }
               }
               return false;
            };

            function clearBuffer(start, end) {
               for (var i = start; i < end && i < len; i++) {
                  if (tests[i])
                     buffer[i] = settings.placeholder;
               }
            };

            function writeBuffer() { return input.val(buffer.join('')).val(); };

            function checkVal(allow) {
               //try to place characters where they belong
               var test = input.val();
               var lastMatch = -1;
               for (var i = 0, pos = 0; i < len; i++) {
                  if (tests[i]) {
                     buffer[i] = settings.placeholder;
                     while (pos++ < test.length) {
                        var c = test.charAt(pos - 1);
                        if (tests[i].test(c)) {
                           buffer[i] = c;
                           lastMatch = i;
                           break;
                        }
                     }
                     if (pos > test.length)
                        break;
                  } else if (buffer[i] == test[pos] && i!=partialPosition) {
                     pos++;
                     lastMatch = i;
                  }
               }
               if (!allow && lastMatch + 1 < partialPosition) {
                  // Nuking the value of the TextBox when we blur out for no reason is Lame.
                  // Also, Clearing this buffer makes us forget what was here before we clicked and us dumb and counter-intuitive.
                  //
                  // input.val("");
                  // clearBuffer(0, len);
                  //

                  // Instead, let's only clear this input if there is just a mask skeleton there.
                  // Using This code's .mask() function to get the raw data, excluding the characters we put in  -AE 7/29/2010
                  if ( !input.mask() )
                     {
                     input.val("");
                     }

               } else if (allow || lastMatch + 1 >= partialPosition) {
                  writeBuffer();
                  if (!allow) input.val(input.val().substring(0, lastMatch + 1));
               }
               return (partialPosition ? i : firstNonMaskPos);
            };

            if (!input.attr("readonly"))
               input
               .one("unmask", function() {
                  input
                     .unbind(".mask")
                     .removeData("buffer")
                     .removeData("tests");
               })

               .bind("focus.mask", function() {
                  focusText = input.val();
                  var here = input.caret().begin;
                  var pos = checkVal();

                        //console.log("focused. pos is: " + pos);
                        //console.log("mask length is: " + mask.length);
                        //input.caret(0, pos);
                        //console.log("end pos is: " + input.caret().end);

                  input.val("");
                  clearBuffer(pos, buffer.length);
                  writeBuffer();

                  // Ummm why the set timeout with 0 limit?
                  // When this is in place, clicking tab at the same time as you click a masked field throws this piece of junk into an infinite focus/blur
                  // Please don't put this back in unless you know why you are doing it
                  //setTimeout(function() {
                     //if (pos == mask.length)
                     //{
                        //console.log("focused. pos is: " + pos);
                        //console.log("mask length is: " + mask.length);
                        if (!here)
                           input.caret(0, pos);

                        else
                           {
                           if (here > pos) { (here = pos) };
                           }
                           input.caret(here);

                     // I also have no interest in their word processor non standard functionality.
                     // If I tab in, I expect the contents to be highlighted just like EVERY OTHER BROWSER FIELD! -AE 7/29/2010
                     //}
                     //else
                     //{
                     //   alert(pos + " " + mask.length);
                     //   input.caret(pos);
                     //}
                  //}, 0);
               })

               .bind("blur.mask", function() {
                  checkVal();
                  if (input.val() != focusText)
                     input.change();
               })

               .bind("click.mask", function() {  // Fireing focus on click, but Preventing unselecting double-click highlighting
                  if (input.caret().begin == input.caret().end)
                     input.focus();
               })
               .bind("keydown.mask", keydownEvent)
               .bind("keypress.mask", keypressEvent)
               .bind(pasteEventName, function() {
                  setTimeout(function() { input.caret(checkVal(true)); }, 0);
               });

            checkVal(); //Perform initial check for existing values
         });
      }
   });
})(jQuery);