Daniel@0: /**
Daniel@0:  * jquery-textrange
Daniel@0:  * A jQuery plugin for getting, setting and replacing the selected text in input fields and textareas.
Daniel@0:  * See the [README](https://github.com/dwieeb/jquery-textrange/blob/1.x/README.md) for usage and examples.
Daniel@0:  *
Daniel@0:  * (c) 2012-2014 Daniel Imhoff <dwieeb@gmail.com> - danielimhoff.com
Daniel@0:  */
Daniel@0: 
Daniel@0: (function(factory) {
Daniel@0: 
Daniel@0:     if (typeof define === 'function' && define.amd) {
Daniel@0:         define(['jquery'], factory);
Daniel@0:     } else if (typeof exports === 'object') {
Daniel@0:         factory(require('jquery'));
Daniel@0:     } else {
Daniel@0:         factory(jQuery);
Daniel@0:     }
Daniel@0: 
Daniel@0: })(function($) {
Daniel@0: 
Daniel@0:     var browserType,
Daniel@0: 
Daniel@0:     textrange = {
Daniel@0: 
Daniel@0:         /**
Daniel@0:          * $().textrange() or $().textrange('get')
Daniel@0:          *
Daniel@0:          * Retrieves an object containing the start and end location of the text range, the length of the range and the
Daniel@0:          * substring of the range.
Daniel@0:          *
Daniel@0:          * @param (optional) property
Daniel@0:          * @return An object of properties including position, start, end, length, and text or a specific property.
Daniel@0:          */
Daniel@0:         get: function(property) {
Daniel@0:             return _textrange[browserType].get.apply(this, [property]);
Daniel@0:         },
Daniel@0: 
Daniel@0:         /**
Daniel@0:          * $().textrange('set')
Daniel@0:          *
Daniel@0:          * Sets the selected text of an object by specifying the start and length of the selection.
Daniel@0:          *
Daniel@0:          * The start and length parameters are identical to PHP's substr() function with the following changes:
Daniel@0:          *  - excluding start will select all the text in the field.
Daniel@0:          *  - passing 0 for length will set the cursor at start. See $().textrange('setcursor')
Daniel@0:          *
Daniel@0:          * @param (optional) start
Daniel@0:          * @param (optional) length
Daniel@0:          *
Daniel@0:          * @see http://php.net/manual/en/function.substr.php
Daniel@0:          */
Daniel@0:         set: function(start, length) {
Daniel@0:             var s = parseInt(start),
Daniel@0:                 l = parseInt(length),
Daniel@0:                 e;
Daniel@0: 
Daniel@0:             if (typeof start === 'undefined') {
Daniel@0:                 s = 0;
Daniel@0:             } else if (start < 0) {
Daniel@0:                 s = this[0].value.length + s;
Daniel@0:             }
Daniel@0: 
Daniel@0:             if (typeof length !== 'undefined') {
Daniel@0:                 if (length >= 0) {
Daniel@0:                     e = s + l;
Daniel@0:                 } else {
Daniel@0:                     e = this[0].value.length + l;
Daniel@0:                 }
Daniel@0:             }
Daniel@0: 
Daniel@0:             _textrange[browserType].set.apply(this, [s, e]);
Daniel@0: 
Daniel@0:             return this;
Daniel@0:         },
Daniel@0: 
Daniel@0:         /**
Daniel@0:          * $().textrange('setcursor')
Daniel@0:          *
Daniel@0:          * Sets the cursor at a position of the text field.
Daniel@0:          *
Daniel@0:          * @param position
Daniel@0:          */
Daniel@0:         setcursor: function(position) {
Daniel@0:             return this.textrange('set', position, 0);
Daniel@0:         },
Daniel@0: 
Daniel@0:         /**
Daniel@0:          * $().textrange('replace')
Daniel@0:          * Replaces the selected text in the input field or textarea with text.
Daniel@0:          *
Daniel@0:          * @param text The text to replace the selection with.
Daniel@0:          */
Daniel@0:         replace: function(text) {
Daniel@0:             _textrange[browserType].replace.apply(this, [String(text)]);
Daniel@0: 
Daniel@0:             return this;
Daniel@0:         },
Daniel@0: 
Daniel@0:         /**
Daniel@0:          * Alias for $().textrange('replace')
Daniel@0:          */
Daniel@0:         insert: function(text) {
Daniel@0:             return this.textrange('replace', text);
Daniel@0:         }
Daniel@0:     },
Daniel@0: 
Daniel@0:     _textrange = {
Daniel@0:         xul: {
Daniel@0:             get: function(property) {
Daniel@0:                 var props = {
Daniel@0:                     position: this[0].selectionStart,
Daniel@0:                     start: this[0].selectionStart,
Daniel@0:                     end: this[0].selectionEnd,
Daniel@0:                     length: this[0].selectionEnd - this[0].selectionStart,
Daniel@0:                     text: this.val().substring(this[0].selectionStart, this[0].selectionEnd)
Daniel@0:                 };
Daniel@0: 
Daniel@0:                 return typeof property === 'undefined' ? props : props[property];
Daniel@0:             },
Daniel@0: 
Daniel@0:             set: function(start, end) {
Daniel@0:                 if (typeof end === 'undefined') {
Daniel@0:                     end = this[0].value.length;
Daniel@0:                 }
Daniel@0: 
Daniel@0:                 this[0].selectionStart = start;
Daniel@0:                 this[0].selectionEnd = end;
Daniel@0:             },
Daniel@0: 
Daniel@0:             replace: function(text) {
Daniel@0:                 var start = this[0].selectionStart;
Daniel@0:                 var end = this[0].selectionEnd;
Daniel@0:                 var val = this.val();
Daniel@0:                 this.val(val.substring(0, start) + text + val.substring(end, val.length));
Daniel@0:                 this[0].selectionStart = start;
Daniel@0:                 this[0].selectionEnd = start + text.length;
Daniel@0:             }
Daniel@0:         },
Daniel@0: 
Daniel@0:         msie: {
Daniel@0:             get: function(property) {
Daniel@0:                 var range = document.selection.createRange();
Daniel@0: 
Daniel@0:                 if (typeof range === 'undefined') {
Daniel@0:                     var props = {
Daniel@0:                         position: 0,
Daniel@0:                         start: 0,
Daniel@0:                         end: this.val().length,
Daniel@0:                         length: this.val().length,
Daniel@0:                         text: this.val()
Daniel@0:                     };
Daniel@0: 
Daniel@0:                     return typeof property === 'undefined' ? props : props[property];
Daniel@0:                 }
Daniel@0: 
Daniel@0:                 var start = 0;
Daniel@0:                 var end = 0;
Daniel@0:                 var length = this[0].value.length;
Daniel@0:                 var lfValue = this[0].value.replace(/\r\n/g, '\n');
Daniel@0:                 var rangeText = this[0].createTextRange();
Daniel@0:                 var rangeTextEnd = this[0].createTextRange();
Daniel@0:                 rangeText.moveToBookmark(range.getBookmark());
Daniel@0:                 rangeTextEnd.collapse(false);
Daniel@0: 
Daniel@0:                 if (rangeText.compareEndPoints('StartToEnd', rangeTextEnd) === -1) {
Daniel@0:                     start = -rangeText.moveStart('character', -length);
Daniel@0:                     start += lfValue.slice(0, start).split('\n').length - 1;
Daniel@0: 
Daniel@0:                     if (rangeText.compareEndPoints('EndToEnd', rangeTextEnd) === -1) {
Daniel@0:                         end = -rangeText.moveEnd('character', -length);
Daniel@0:                         end += lfValue.slice(0, end).split('\n').length - 1;
Daniel@0:                     } else {
Daniel@0:                         end = length;
Daniel@0:                     }
Daniel@0:                 } else {
Daniel@0:                     start = length;
Daniel@0:                     end = length;
Daniel@0:                 }
Daniel@0: 
Daniel@0:                 var props = {
Daniel@0:                     position: start,
Daniel@0:                     start: start,
Daniel@0:                     end: end,
Daniel@0:                     length: length,
Daniel@0:                     text: range.text
Daniel@0:                 };
Daniel@0: 
Daniel@0:                 return typeof property === 'undefined' ? props : props[property];
Daniel@0:             },
Daniel@0: 
Daniel@0:             set: function(start, end) {
Daniel@0:                 var range = this[0].createTextRange();
Daniel@0: 
Daniel@0:                 if (typeof range === 'undefined') {
Daniel@0:                     return;
Daniel@0:                 }
Daniel@0: 
Daniel@0:                 if (typeof end === 'undefined') {
Daniel@0:                     end = this[0].value.length;
Daniel@0:                 }
Daniel@0: 
Daniel@0:                 var ieStart = start - (this[0].value.slice(0, start).split("\r\n").length - 1);
Daniel@0:                 var ieEnd = end - (this[0].value.slice(0, end).split("\r\n").length - 1);
Daniel@0: 
Daniel@0:                 range.collapse(true);
Daniel@0: 
Daniel@0:                 range.moveEnd('character', ieEnd);
Daniel@0:                 range.moveStart('character', ieStart);
Daniel@0: 
Daniel@0:                 range.select();
Daniel@0:             },
Daniel@0: 
Daniel@0:             replace: function(text) {
Daniel@0:                 document.selection.createRange().text = text;
Daniel@0:             }
Daniel@0:         }
Daniel@0:     };
Daniel@0: 
Daniel@0:     $.fn.textrange = function(method) {
Daniel@0:         if (typeof this[0] === 'undefined') {
Daniel@0:             return this;
Daniel@0:         }
Daniel@0: 
Daniel@0:         if (typeof browserType === 'undefined') {
Daniel@0:             browserType = 'selectionStart' in this[0] ? 'xul' : document.selection ? 'msie' : 'unknown';
Daniel@0:         }
Daniel@0: 
Daniel@0:         // I don't know how to support this browser. :c
Daniel@0:         if (browserType === 'unknown') {
Daniel@0:             return this;
Daniel@0:         }
Daniel@0: 
Daniel@0:         // Focus on the element before operating upon it.
Daniel@0:         if (document.activeElement !== this[0]) {
Daniel@0:             this[0].focus();
Daniel@0:         }
Daniel@0: 
Daniel@0:         if (typeof method === 'undefined' || typeof method !== 'string') {
Daniel@0:             return textrange.get.apply(this);
Daniel@0:         } else if (typeof textrange[method] === 'function') {
Daniel@0:             return textrange[method].apply(this, Array.prototype.slice.call(arguments, 1));
Daniel@0:         } else {
Daniel@0:             $.error("Method " + method + " does not exist in jQuery.textrange");
Daniel@0:         }
Daniel@0:     };
Daniel@0: });