[44] | 1 | RegExp.escape = function(text)
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| 2 | {
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| 3 | if (!arguments.callee.sRE)
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| 4 | {
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| 5 | var specials = [
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| 6 | '/', '.', '*', '+', '?', '|',
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| 7 | '(', ')', '[', ']', '{', '}', '\\'
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| 8 | ];
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| 9 |
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| 10 | arguments.callee.sRE = new RegExp(
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| 11 | '(\\' + specials.join('|\\') + ')', 'g'
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| 12 | );
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| 13 | }
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| 14 |
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| 15 | return text.replace(arguments.callee.sRE,'\\$1');
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| 16 | };
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| 17 |
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| 18 | var BComplete = Class.create();
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| 19 | BComplete.prototype =
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| 20 | {
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| 21 | MAX_VISIBLE : 8,
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| 22 | TIMER_TICK : 10,
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| 23 | CANCEL_SUBMISSION_TIMEOUT : 10,
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| 24 |
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| 25 | initialize : function(element,max)
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| 26 | {
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| 27 | if(max)
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| 28 | {
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| 29 | this.MAX_VISIBLE = max;
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| 30 | }
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| 31 |
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| 32 | this.data = new Array();
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| 33 | this.element = $(element);
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| 34 | if(!this.element)
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| 35 | {
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| 36 | throw("BComplete: The specified <input> element does not exist.");
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| 37 | }
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| 38 |
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| 39 | this.element.setAttribute("autocomplete","off");
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| 40 | Element.addClassName(this.element,"bcomplete-field");
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| 41 |
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| 42 | this.visible = false;
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| 43 | this.cancelSubmit = false;
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| 44 | this.scroll = 0;
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| 45 | this.selectedIndex = -1;
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| 46 | this.matches = new Array();
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| 47 |
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| 48 | this.popup = document.createElement("div");
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| 49 | Element.hide(this.popup);
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| 50 | this.popup.className = "bcomplete-popup";
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| 51 | document.body.appendChild(this.popup);
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| 52 |
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| 53 | this.upButton = document.createElement("div");
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| 54 | this.upButton.className = "up-button";
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| 55 | this.popup.appendChild(this.upButton);
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| 56 |
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| 57 | this.listItems = new Array();
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| 58 | for(var i=0;i<this.MAX_VISIBLE;i++)
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| 59 | {
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| 60 | var item = document.createElement("div");
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| 61 | this.listItems[i] = item ;
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| 62 | item.className = "item";
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| 63 | this.popup.appendChild(item);
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| 64 | item.autocomplete = this;
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| 65 | item.number = i;
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| 66 |
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| 67 | item.onclick = this.onItemClick;
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| 68 | item.onmouseover = this.onItemOn;
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| 69 | item.onmouseout = this.onItemOff;
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| 70 | }
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| 71 |
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| 72 | this.downButton = document.createElement("div");
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| 73 | this.downButton.className = "down-button";
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| 74 | this.popup.appendChild(this.downButton);
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| 75 |
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| 76 | Event.observe(this.element,"keypress",
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| 77 | this.onKeyPress.bindAsEventListener(this));
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| 78 | Event.observe(this.element,"keydown",
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| 79 | this.onKeyDown.bindAsEventListener(this));
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| 80 | Event.observe(this.upButton,"click",
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| 81 | this.onUpButton.bindAsEventListener(this));
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| 82 | Event.observe(this.downButton,"click",
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| 83 | this.onDownButton.bindAsEventListener(this));
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| 84 | Event.observe(document,"click",
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| 85 | this.onWindowClick.bindAsEventListener(this));
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| 86 |
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| 87 | this.onTick = this.onTick.bind(this);
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| 88 | this.onSubmit = this.onSubmit.bind(this);
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| 89 |
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| 90 | // look for parent <form>
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| 91 | var parentForm = this.element.parentNode;
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| 92 | while(parentForm)
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| 93 | {
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| 94 | if(parentForm.tagName.toLowerCase() == "form")
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| 95 | break;
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| 96 |
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| 97 | parentForm = parentForm.parentNode;
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| 98 | }
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| 99 |
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| 100 | // capture submit event for parent <form>
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| 101 | var me = this;
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| 102 | if(parentForm)
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| 103 | {
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| 104 | var oldHandler = parentForm.onsubmit;
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| 105 | parentForm.onsubmit = function()
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| 106 | {
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| 107 | if(oldHandler)
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| 108 | return (oldHandler() && me.onSubmit());
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| 109 | else
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| 110 | return me.onSubmit();
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| 111 | };
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| 112 | }
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| 113 | },
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| 114 |
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| 115 | addItem : function(item)
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| 116 | {
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| 117 | this.data[this.data.length] = item;
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| 118 | this.data.sort();
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| 119 | },
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| 120 |
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| 121 | setData : function(data)
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| 122 | {
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| 123 | this.data = data;
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| 124 | data.sort();
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| 125 | },
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| 126 |
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| 127 | loadData : function(url)
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| 128 | {
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| 129 | var me = this;
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| 130 | var success = function(request)
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| 131 | {
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| 132 | try
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| 133 | {
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| 134 | var data = eval(request.responseText);
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| 135 | if(typeof data == "object")
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| 136 | {
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| 137 | me.setData(data);
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| 138 | }
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| 139 | }
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| 140 | catch(exception)
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| 141 | {
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| 142 | throw("BComplete: Invalid data format.");
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| 143 | }
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| 144 | };
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| 145 |
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| 146 | var request = new Ajax.Request(url,
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| 147 | { method: 'get', onSuccess: success });
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| 148 | },
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| 149 |
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| 150 | findMatches : function(text)
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| 151 | {
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| 152 | var matches = new Array();
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| 153 |
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| 154 | // Modifications for multiples values
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| 155 | var exp = new RegExp(",?[^,]*$" , "i");
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| 156 | m = text.match(exp);
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| 157 | text = m[0].replace(/^[,\s]+|\s+$/g,"");
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| 158 |
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| 159 | // Strict search (old) (must start with...)
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| 160 | // var expression = new RegExp("^"+ RegExp.escape(text),"i");
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| 161 | // Cool search
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| 162 | var expression = new RegExp(RegExp.escape(text),"i");
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| 163 |
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| 164 | for(var i=0;i<this.data.length;i++) {
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| 165 | if(this.data[i].match(expression)) {
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| 166 | matches[matches.length] = this.data[i];
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| 167 | }
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| 168 | }
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| 169 |
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| 170 | return matches;
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| 171 | },
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| 172 |
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| 173 | temporarilyDisableSubmission : function()
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| 174 | {
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| 175 | this.cancelSubmit = true;
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| 176 | var me = this;
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| 177 | var revert = function()
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| 178 | {
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| 179 | me.cancelSubmit = false;
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| 180 | };
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| 181 |
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| 182 | setTimeout(revert,this.CANCEL_SUBMISSION_TIMEOUT);
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| 183 | },
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| 184 |
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| 185 | onWindowClick : function(event)
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| 186 | {
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| 187 | var element = Event.element(event);
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| 188 |
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| 189 | var parent = element;
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| 190 | while(parent)
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| 191 | {
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| 192 | if(parent == this.element || parent == this.popup ||
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| 193 | parent == this.showAllButton)
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| 194 | {
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| 195 | return;
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| 196 | }
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| 197 |
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| 198 | parent = parent.parentNode;
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| 199 | }
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| 200 |
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| 201 | this.hide();
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| 202 | },
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| 203 |
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| 204 | onUpButton : function(event)
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| 205 | {
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| 206 | this.selectedIndex = -1;
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| 207 | this.scroll--;
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| 208 | if(this.scroll < 0)
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| 209 | this.scroll = 0;
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| 210 |
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| 211 | this.show();
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| 212 | Event.stop(event);
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| 213 | this.element.focus();
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| 214 | },
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| 215 |
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| 216 | onDownButton : function(event)
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| 217 | {
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| 218 | this.selectedIndex = -1;
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| 219 | this.scroll++;
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| 220 | if(this.scroll > (this.matches.length - this.MAX_VISIBLE))
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| 221 | this.scroll = (this.matches.length - this.MAX_VISIBLE);
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| 222 |
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| 223 | this.show();
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| 224 | Event.stop(event);
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| 225 | this.element.focus();
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| 226 | },
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| 227 |
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| 228 | onKeyDown : function(event)
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| 229 | {
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| 230 | if(event.keyCode == 13 && this.visible)
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| 231 | {
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| 232 | this.temporarilyDisableSubmission();
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| 233 | this.select();
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| 234 | Event.stop(event);
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| 235 | return false;
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| 236 | }
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| 237 | },
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| 238 |
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| 239 | showAll : function()
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| 240 | {
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| 241 | this.matches = this.findMatches('');
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| 242 | this.element.focus();
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| 243 | this.show();
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| 244 | },
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| 245 |
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| 246 | onKeyPress : function(event)
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| 247 | {
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| 248 | if(event.keyCode == Event.KEY_TAB)
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| 249 | {
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| 250 | if(this.visible)
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| 251 | {
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| 252 | this.select();
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| 253 | Event.stop(event);
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| 254 | return false;
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| 255 | }
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| 256 | }
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| 257 | else if(event.keyCode == Event.KEY_DOWN)
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| 258 | {
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| 259 | this.selectedIndex++;
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| 260 | if(this.selectedIndex < this.scroll)
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| 261 | this.selectedIndex = this.scroll;
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| 262 |
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| 263 | if(this.selectedIndex >= this.matches.length)
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| 264 | this.selectedIndex = this.matches.length - 1;
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| 265 |
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| 266 | if(this.scroll <= (this.selectedIndex - this.MAX_VISIBLE))
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| 267 | this.scroll++;
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| 268 |
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| 269 | if(this.matches.length == 0)
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| 270 | {
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| 271 | this.matches = this.findMatches(this.element.value);
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| 272 | }
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| 273 |
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| 274 | this.show();
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| 275 | Event.stop(event);
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| 276 | return;
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| 277 | }
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| 278 | else if(event.keyCode == Event.KEY_UP)
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| 279 | {
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| 280 | this.selectedIndex--;
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| 281 | if(this.selectedIndex <= -1 && this.scroll <= 0)
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| 282 | {
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| 283 | this.selectedIndex = -1;
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| 284 | this.hide();
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| 285 | Event.stop(event);
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| 286 | return;
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| 287 | }
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| 288 |
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| 289 | if(this.selectedIndex <= -1)
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| 290 | this.selectedIndex = this.scroll + (this.MAX_VISIBLE - 1);
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| 291 |
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| 292 | if(this.scroll > this.selectedIndex)
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| 293 | this.scroll--;
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| 294 |
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| 295 | this.show();
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| 296 | Event.stop(event);
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| 297 | return;
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| 298 | }
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| 299 | else if(event.keyCode != 13)
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| 300 | {
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| 301 | if(this.timerId)
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| 302 | clearTimeout(this.timerId);
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| 303 |
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| 304 | this.timerId = setTimeout(this.onTick,this.TIMER_TICK);
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| 305 | }
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| 306 | },
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| 307 |
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| 308 | onTick : function()
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| 309 | {
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| 310 | this.selectedIndex = -1;
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| 311 | this.scroll = 0;
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| 312 | if(this.element.value != '')
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| 313 | {
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| 314 | this.matches = this.findMatches(this.element.value);
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| 315 | if(this.matches.length > 0)
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| 316 | this.show();
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| 317 | else
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| 318 | this.hide();
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| 319 | }
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| 320 | else
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| 321 | {
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| 322 | this.hide();
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| 323 | }
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| 324 | },
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| 325 |
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| 326 | onSubmit : function()
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| 327 | {
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| 328 | if(this.cancelSubmit)
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| 329 | {
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| 330 | this.cancelSubmit = false;
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| 331 | return false;
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| 332 | }
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| 333 | else
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| 334 | {
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| 335 | return true;
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| 336 | }
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| 337 | },
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| 338 |
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| 339 | onItemOn : function()
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| 340 | {
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| 341 | for(var i=0;i<this.autocomplete.MAX_VISIBLE;i++)
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| 342 | Element.removeClassName(this.autocomplete.listItems[i],"selected");
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| 343 |
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| 344 | Element.addClassName(this,"selected");
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| 345 | this.autocomplete.selectedIndex = this.number;
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| 346 | },
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| 347 |
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| 348 | onItemOff : function()
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| 349 | {
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| 350 | Element.removeClassName(this,"selected");
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| 351 | this.autocomplete.selectedIndex = -1;
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| 352 | },
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| 353 |
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| 354 | onItemClick : function()
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| 355 | {
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| 356 | this.autocomplete.selectedIndex = this.number;
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| 357 | this.autocomplete.select();
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| 358 | },
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| 359 |
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| 360 | show : function()
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| 361 | {
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| 362 | if(this.matches.length <= 0)
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| 363 | return ;
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| 364 |
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| 365 | var text = this.element.value;
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| 366 |
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| 367 | // Modifications for multiples values
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| 368 | var exp = new RegExp(",?[^,]*$" , "i");
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| 369 | m = text.match(exp);
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| 370 | text = m[0].replace(/^[,\s]+|\s+$/g,"");
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| 371 |
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| 372 | var expression = new RegExp("("+RegExp.escape(text)+")","i");
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| 373 |
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| 374 | if(this.scroll > 0)
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| 375 | Element.removeClassName(this.upButton,"disabled")
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| 376 | else
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| 377 | Element.addClassName(this.upButton,"disabled")
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| 378 |
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| 379 | if((this.scroll + this.MAX_VISIBLE) < this.matches.length)
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| 380 | Element.removeClassName(this.downButton,"disabled")
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| 381 | else
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| 382 | Element.addClassName(this.downButton,"disabled")
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| 383 |
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| 384 | for(var i=0;i<this.MAX_VISIBLE;i++)
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| 385 | {
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| 386 | if(this.matches[i+this.scroll])
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| 387 | {
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| 388 | var text = this.matches[i+this.scroll];
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| 389 | text = text.replace(expression,"<strong>$1</strong>");
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| 390 | this.listItems[i].innerHTML = text;
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| 391 | this.listItems[i].number = i + this.scroll;
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| 392 | this.listItems[i].value = this.matches[i+this.scroll];
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| 393 |
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| 394 | if(this.selectedIndex == (this.scroll + i))
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| 395 | Element.addClassName(this.listItems[i],"selected");
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| 396 | else
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| 397 | Element.removeClassName(this.listItems[i],"selected");
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| 398 |
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| 399 | Element.show(this.listItems[i]);
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| 400 | }
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| 401 | else
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| 402 | {
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| 403 | Element.hide(this.listItems[i]);
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| 404 | }
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| 405 | }
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| 406 |
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| 407 | this.visible = true;
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| 408 | Element.show(this.popup);
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| 409 | this.setPopupPosition();
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| 410 | },
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| 411 |
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| 412 | setPopupPosition : function()
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| 413 | {
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| 414 | var position = Position.cumulativeOffset(this.element);
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| 415 | var scrollY = document.body.scrollTop ?
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| 416 | document.body.scrollTop : document.documentElement.scrollTop;
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| 417 | var viewHeight = (navigator.userAgent.toLowerCase().indexOf("safari") != -1 &&
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| 418 | window.innerHeight) ? window.innerHeight :
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| 419 | document.documentElement.clientHeight;
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| 420 |
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| 421 | this.popup.style.width = (this.element.offsetWidth - 2) + "px";
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| 422 | this.popup.style.left = position[0] + "px";
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| 423 |
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| 424 | var popupTop = position[1] + Element.getHeight(this.element);
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| 425 | if((popupTop + this.popup.offsetHeight > scrollY + viewHeight) &&
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| 426 | (position[1] - this.popup.offsetHeight > scrollY))
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| 427 | {
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| 428 | popupTop = position[1] - this.popup.offsetHeight;
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| 429 | }
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| 430 |
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| 431 | this.popup.style.top = popupTop + "px";
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| 432 | },
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| 433 |
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| 434 | hide : function()
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| 435 | {
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| 436 | this.matches = new Array();
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| 437 | this.selectedIndex = -1;
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| 438 | this.scroll = 0;
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| 439 | this.visible = false;
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| 440 | Element.hide(this.popup);
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| 441 | },
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| 442 |
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| 443 | select : function()
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| 444 | {
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| 445 | if(this.selectedIndex != -1)
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| 446 | {
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| 447 | // Modifications for multiples values
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| 448 | //this.element.value += this.matches[this.selectedIndex]+', ';
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| 449 | this.element.value = this.element.value.replace(/(,?\s?)[^,]*$/i, "$1" + this.matches[this.selectedIndex] + ', ');
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| 450 | }
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| 451 | setCaretToEnd(this.element);
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| 452 | this.hide();
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| 453 | }
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| 454 | };
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| 455 |
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| 456 | function setSelectionRange(input, selectionStart, selectionEnd) {
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| 457 | if (input.setSelectionRange) {
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| 458 | input.focus();
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| 459 | input.setSelectionRange(selectionStart, selectionEnd);
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| 460 | }
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| 461 | else if (input.createTextRange) {
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| 462 | var range = input.createTextRange();
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| 463 | range.collapse(true);
|
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| 464 | range.moveEnd('character', selectionEnd);
|
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| 465 | range.moveStart('character', selectionStart);
|
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| 466 | range.select();
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| 467 | }
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| 468 | }
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| 469 |
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| 470 | function setCaretToEnd (input) {
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| 471 | setSelectionRange(input, input.value.length, input.value.length);
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| 472 | } |
---|