/*! 
 * a-tools 1.2
 * 
 * Copyright (c) 2009 Andrey Kramarev, Ampparit Inc. (www.ampparit.com)
 * Licensed under the MIT license.
 * http://www.ampparit.fi/a-tools/license.txt
 *
 * Basic usage:
 
    <textarea></textarea>
    <input type="text" />

    // Get current selection
    var sel = $("textarea").getSelection()
    
    // Replace current selection
    $("input").replaceSelection("foo");

    // Count characters
    alert($("textarea").countCharacters());

    // Set max length without callback function
    $("textarea").setMaxLength(7);

    // Set max length with callback function which will be called when limit is exceeded
    $("textarea").setMaxLength(10, function() {
        alert("hello")
    });

    // Removing limit:
    $("textarea").setMaxLength(-1);
    
    // Insert text at current caret position
    $("#textarea").insertAtCaretPos("hello");
    
    // Set caret position (1 = beginning, -1 = end)
    $("#textArea").setCaretPos(10);

 */
var caretPositionAmp;jQuery.fn.extend({getSelection:function(){var k=this.jquery?this[0]:this;var b;var f;var c;if(document.selection){var p=document.selection.createRange();if(p.text){var d=0;c=p.text;if(k.value.match(/\n/g)!=null){d=k.value.match(/\n/g).length}var e=0;var j=0;var g=0;if(typeof(k.selectionStart)=="number"){b=k.selectionStart;f=k.selectionEnd;if(b==f){return this}}else{var n=k.createTextRange();var m;var o;var a=n.duplicate();m=n.text;n.moveToBookmark(p.getBookmark());o=n.text;a.setEndPoint("EndToStart",n);if(m==o&&m!=p.text){return this}b=a.text.length;f=a.text.length+p.text.length}if(d>0){for(var h=0;h<=d;h++){var l=k.value.indexOf("\n",j);if(l!=-1&&l<b){j=l+1;e++;g=e}else{if(l!=-1&&l>=b&&l<=f){if(l==b+1){e--;g--;j=l+1;continue}j=l+1;g++}else{h=d}}}}if(p.text.indexOf("\n",0)==1){g=g+2}b=b-e;f=f-g;return{start:b,end:f,text:p.text,length:f-b}}return false}else{if(typeof(k.selectionStart)=="number"&&k.selectionStart!=k.selectionEnd){b=k.selectionStart;f=k.selectionEnd;c=k.value.substring(k.selectionStart,k.selectionEnd);return{start:b,end:f,text:c,length:f-b}}else{return{start:undefined,end:undefined,text:undefined,length:undefined}}}},replaceSelection:function(h){var j=this.jquery?this[0]:this;var b;var e;var g=0;var a;var m;var d=0;var c=0;if(document.selection&&typeof(j.selectionStart)!="number"){var o=document.selection.createRange();if(typeof(j.selectionStart)!="number"){var l;var n;m=j.createTextRange();a=m.duplicate();l=m.text;m.moveToBookmark(o.getBookmark());n=m.text;a.setEndPoint("EndToStart",m);if(l==n&&l!=o.text){return this}}if(o.text){part=o.text;if(j.value.match(/\n/g)!=null){d=j.value.match(/\n/g).length}b=a.text.length;if(d>0){for(var f=0;f<=d;f++){var k=j.value.indexOf("\n",g);if(k!=-1&&k<b){g=k+1;c++}else{f=d}}}o.text=h;caretPositionAmp=a.text.length+h.length;m.move("character",caretPositionAmp);document.selection.empty();j.blur()}return this}else{if(typeof(j.selectionStart)=="number"&&j.selectionStart!=j.selectionEnd){b=j.selectionStart;e=j.selectionEnd;j.value=j.value.substr(0,b)+h+j.value.substr(e);g=b+h.length;j.setSelectionRange(g,g);return this}}return this},insertAtCaretPos:function(g){var h=this.jquery?this[0]:this;var b;var d;var f;var m;var l;var a;var k;var c=0;if((IE6=false/*@cc_on || @_jscript_version < 5.7 @*/) || navigator.appName == 'Microsoft Internet Explorer'){h.focus();sel = document.selection.createRange();sel.text = g;h.focus();return;}h.focus();if(document.selection&&typeof(h.selectionStart)!="number"){if(h.value.match(/\n/g)!=null){number=h.value.match(/\n/g).length}k=parseInt(caretPositionAmp);if(number>0){for(var e=0;e<=number;e++){var j=h.value.indexOf("\n",f);if(j!=-1&&j<=k){f=j+1;k=k-1;c++}}}}caretPositionAmp=parseInt(caretPositionAmp);h.onclick=function(){if(document.selection&&typeof(h.selectionStart)!="number"){m=document.selection.createRange();l=h.createTextRange();a=l.duplicate();l.moveToBookmark(m.getBookmark());a.setEndPoint("EndToStart",l);caretPositionAmp=a.text.length}};if(document.selection&&typeof(h.selectionStart)!="number"){m=document.selection.createRange();if(m.text.length!=0){return this}l=h.createTextRange();textLength=l.text.length;a=l.duplicate();l.moveToBookmark(m.getBookmark());a.setEndPoint("EndToStart",l);b=a.text.length;if(caretPositionAmp>=0&&b==0&&caretPositionAmp!=b){c=caretPositionAmp-c;l.move("character",c);l.select();m=document.selection.createRange();caretPositionAmp+=g.length}else{if(caretPositionAmp==undefined&&b==0){l.move("character",textLength);l.select();m=document.selection.createRange();caretPositionAmp=g.length}else{if(!(parseInt(caretPositionAmp)>=0)){l.move("character",b);document.selection.empty();l.select();m=document.selection.createRange();caretPositionAmp=b+g.length}else{if(parseInt(caretPositionAmp)>=0){l.move("character",caretPositionAmp-b);document.selection.empty();l.select();m=document.selection.createRange();caretPositionAmp=caretPositionAmp+g.length}else{l.move("character",caretPositionAmp-b);document.selection.empty();l.select();m=document.selection.createRange();caretPositionAmp=caretPositionAmp+g.length}}}}m.text=g;h.focus();return this}else{if(typeof(h.selectionStart)=="number"&&h.selectionStart==h.selectionEnd){f=h.selectionStart+g.length;b=h.selectionStart;d=h.selectionEnd;h.value=h.value.substr(0,b)+g+h.value.substr(d);h.setSelectionRange(f,f);return this}}return this},setCaretPos:function(e){var f=this.jquery?this[0]:this;var j;var h;var d;var a;var b=0;var g;f.focus();if(parseInt(e)==0){return this}if(parseInt(e)>0){e=parseInt(e)-1;if(document.selection&&typeof(f.selectionStart)=="number"&&f.selectionStart==f.selectionEnd){if(f.value.match(/\n/g)!=null){a=f.value.match(/\n/g).length}if(a>0){for(var c=0;c<=a;c++){g=f.value.indexOf("\n",d);if(g!=-1&&g<=e){d=g+1;e=parseInt(e)+1}}}}}else{if(parseInt(e)<0){e=parseInt(e)+1;if(document.selection&&typeof(f.selectionStart)!="number"){e=f.value.length+parseInt(e);if(f.value.match(/\n/g)!=null){a=f.value.match(/\n/g).length}if(a>0){for(var c=0;c<=a;c++){g=f.value.indexOf("\n",d);if(g!=-1&&g<=e){d=g+1;e=parseInt(e)-1;b+=1}}e=e+b-a}}else{if(document.selection&&typeof(f.selectionStart)=="number"){e=f.value.length+parseInt(e);if(f.value.match(/\n/g)!=null){a=f.value.match(/\n/g).length}if(a>0){e=parseInt(e)-a;for(var c=0;c<=a;c++){g=f.value.indexOf("\n",d);if(g!=-1&&g<=(e)){d=g+1;e=parseInt(e)+1;b+=1}}}}else{e=f.value.length+parseInt(e)}}}else{return this}}if(document.selection&&typeof(f.selectionStart)!="number"){j=document.selection.createRange();if(j.text!=0){return this}h=f.createTextRange();h.moveToBookmark(j.getBookmark());h.move("character",e);h.select();j=document.selection.createRange();j.text="";caretPositionAmp=e;f.focus();return this}else{if(typeof(f.selectionStart)=="number"&&f.selectionStart==f.selectionEnd){f.setSelectionRange(e,e);return this}}return this},countCharacters:function(b){var a=this.jquery?this[0]:this;if(a.value.match(/\r/g)!=null){return a.value.length-a.value.match(/\r/g).length}return a.value.length},setMaxLength:function(a,b){this.each(function(){var d=this.jquery?this[0]:this;var f=d.type;var e;var c;if(parseInt(a)<0){a=100000000}if(f=="text"){d.maxLength=a}if(f=="textarea"||f=="text"){d.onkeypress=function(j){var g=d.value.match(/\r/g);c=a;if(g!=null){c=parseInt(c)+g.length}var h=j||event;var i=h.keyCode;if(document.selection){e=document.selection.createRange().text.length>0}else{e=d.selectionStart!=d.selectionEnd}if(d.value.length>=c&&(i>47||i==32||i==0||i==13)&&!h.ctrlKey&&!h.altKey&&!e){d.value=d.value.substring(0,c);if(typeof(b)=="function"){b()}return false}};d.onkeyup=function(){var h=d.value.match(/\r/g);var k=0;var g=0;c=a;if(h!=null){for(var j=0;j<=h.length;j++){if(d.value.indexOf("\n",g)<=parseInt(a)){k++;g=d.value.indexOf("\n",g)+1}}c=parseInt(a)+k}if(d.value.length>c){d.value=d.value.substring(0,c);if(typeof(b)=="function"){b()}return this}}}else{return this}});return this}});