/// <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)
	
	Modified by Jacob Twite
	Added the following features
		: Allow Partial Masks
		: Tabbing between Masks
*/ 
(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]"
		}
	};

	$.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 (document.all && $("#" + $(this).attr("id")).get(0).createTextRange) { // IE Fix
						var range = $("#" + $(this).attr("id")).get(0).createTextRange();
						range.collapse(true);
						range.moveEnd('character', end);
						range.moveStart('character', begin);
						range.select();
					} else if (document.all && $($(this).attr("id")).get(0).setSelectionRange) { // IE Fix
						this.focus();
						this.setSelectionRange(begin, end);
					}
				});
			} 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,
				tabbed: false,
				partial: false
			}, 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 seekNextMask(pos) {
					while (++pos <= len && tests[pos]);
					return seekNext(pos);
				};
				
				function seekPrev(pos) {
					while (--pos > 0 && tests[pos]);
					return pos == 0 ? pos : pos + 1;
				};

				function seekPrevSpace(pos) {
					while (--pos > 0 && !tests[pos]);
					return seekPrev(pos);
				};
				
				function seekPrevMask(pos) {
					while (--pos > 0 && tests[pos]);
					return seekPrevSpace(pos);
				}
				
				function seekMaskEnd(pos) {
					while (++pos <= len && tests[pos]);
					return pos;
				}
				
				function isMaskComplete() {
					var complete = true;
					
					for (var x=0; x<buffer.length; x++) {
						if (tests[x] && !tests[x].test(buffer[x])) {
							complete = false;
							x = buffer.length;
						}
					}
					
					return complete;
				}
				
				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;
					var p = seekNextMask(pos.begin - 1);
					
					ignore = (k < 16 || (k > 16 && k < 32) || (k > 32 && k < 41));
					
					// If tabbing is enabled, don't ignore tab
					if (ignore && settings.tabbed && k == 9) {
						ignore = false;
					}
					
					//delete selection before proceeding
					if ((pos.begin - pos.end) != 0 && (!ignore || k == 8 || k == 46))
						clearBuffer(pos.begin, pos.end);

					//backspace, delete, and escape get special treatment
					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;
					} else if ((isMaskComplete() || !settings.tabbed) && k == 9) { // Allow tabbing through form
						return true;
					} else if (document.all && k == 9 && e.shiftKey && pos.begin == 0) { // IE Shift Tab Fix
						return true;
					} else if (document.all && k == 9) { // IE Tab Fix
						keypressEvent(e);
						return false;
					}
				};

				function keypressEvent(e) {
					e = e || window.event;
					var k = e.charCode || e.keyCode || e.which;
					var pos = $(this).caret();
					
					if (ignore) {
						ignore = false;
						
						//Fixes Mac FF bug on backspace
						return (e.keyCode == 8) ? false : null;
					}
					
					if (e.ctrlKey || e.altKey || e.metaKey) {//Ignore
						return true;
					} else if (settings.tabbed && k == 9 && pos.begin >= len-1) {
						return true;
					} else if (settings.tabbed && k == 9 && e.shiftKey && pos.begin == 0) {
						return true;
					} else if (settings.tabbed && k == 9 && e.shiftKey) {  // Shift-Tab
						var begin = seekPrevMask(pos.begin);
						var end = seekMaskEnd(begin);
						
						if (document.all) {
							$(this).attr("id", e.target.id); // IE Fix
						}
						
						$(this).caret(begin, end);
						
					} else if (settings.tabbed && k == 9) { // Tab
						var begin = seekNextMask(pos.begin);
						var end = seekMaskEnd(begin);
						
						if (settings.completed && begin >= (len+1 )) {
							checkVal(settings.partial);
							settings.completed.call(input);
							$(this).change();
						} else {
							if (document.all) {
								$(this).attr("id", e.target.id); // IE Fix
							}
							$(this).caret(begin, end);
						}
						
					} 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+1)) {
									checkVal(settings.partial);
									settings.completed.call(input);
									$(this).change();
								} 
							}
						}
					}
					
					return false;
				};

				function clearBuffer(start, end) {
					for (var i = start; i < end && i < len; i++) {
						if (tests[i])
							buffer[i] = settings.placeholder;
					}
				};
				
				function rightAlignText() {
					var groups = input.val().split(" ");
					var newVal = "";
					var origL = 0;
					var newL = 0;
					var temp = "";
					
					for (var g=0; g<groups.length; g++) {
						
						origL = groups[g].length;
						temp = groups[g].replace(/_/g, "");
						newL = temp.length;
						
						for (var x=0; x<origL-newL; x++) {
							temp = "_" + temp;
						}
						
						newVal += temp + " ";
						
					}
					
					i = len;
					
					buffer = jQuery.trim(newVal) != "" ? newVal.split('') : buffer;
					input.val(newVal);
				};

				function writeBuffer() { 
					if (settings.tabbed) {
						var groups = buffer.join('').split(" ");
						var newVal = "";
						var origL = 0;
						var newL = 0;
						var temp = "";
						
						for (var g=0; g<groups.length; g++) {
							origL = groups[g].length;
							temp = groups[g].replace(/_/g, "");
							newL = temp.length;
							
							for (var x=0; x<origL-newL; x++) {
								temp += settings.placeholder;
							}
							
							newVal += temp + " ";
						}
						input.val(newVal);
						input.caret(0, mask.length);
					} 
					else {
						input.val(buffer.join(''));
					}
					
					return input.val(); 
				};

				function checkVal(allow, initial) {
					//try to place characters where they belong
					var test = input.val();
					var initial = initial != undefined ? initial : false;
					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 (initial && !isMaskComplete()) {
						var sGroups = input.val().replace(" ft", "").replace(" in", "").split(" ");
						var newVal = "";
						var pos = 0;
						var group = null;
						
						if (input.val() != "") {
							for (var i = 0; i < tests.length; i++) {
								if (tests[i]) {
									buffer[i] = settings.placeholder;
								}
							}
							
							for (var g=0; g<sGroups.length; g++) {
								group = sGroups[g].split("");
								newVal += sGroups[g] + ",";
							
								for (var x=0; x<group.length; x++) {
									buffer[pos++] = group[x];
								}
								
								pos = seekNextMask(pos);
							}
							
							input.val(buffer.join(""));
							
							if (settings.tabbed) {
								rightAlignText();
							}
						}
					} else if (!allow && lastMatch + 1 < partialPosition) {
						input.val("");
						clearBuffer(0, len);
					} else if (allow && settings.tabbed) {	
						var groups = input.val().split(" ");
						var newVal = "";
						var origL = 0;
						var newL = 0;
						var temp = "";
						
						for (var g=0; g<groups.length; g++) {
							
							origL = groups[g].length;
							temp = groups[g].replace(/_/g, "");
							newL = temp.length;
							
							for (var x=0; x<origL-newL; x++) {
								temp = "_" + temp;
							}
							
							newVal += temp + " ";
							
						}
						
						i = len;
						
						buffer = jQuery.trim(newVal) != "" ? newVal.split('') : buffer;
						input.val(newVal);
					} 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 pos = checkVal(settings.partial);
						
						//console.info("Focused: " + pos + " : " + buffer);
						
						writeBuffer();
						setTimeout(function() {
							if (pos == mask.length)
								input.caret(0, pos);
							else
								input.caret(pos);
						}, 0);
					})
					.bind("blur.mask", function() {
						checkVal(settings.partial);
						if (input.val() != focusText)
							input.change();
					})
					.bind("keydown.mask", keydownEvent)
					.bind("keypress.mask", keypressEvent)
					.bind(pasteEventName, function() {
						setTimeout(function() { input.caret(checkVal(true)); }, 0);
					});

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