ref: master
public/javascripts/vendor/inputosaurus.js
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/** * Inputosaurus Text * * Must be instantiated on an <input> element * Allows multiple input items. Each item is represented with a removable tag that appears to be inside the input area. * * @requires: * * jQuery 1.7+ * jQueryUI 1.8+ Core * * @version 0.1.6 * @author Dan Kielp <dan@sproutsocial.com> * @created October 3,2012 * */ (function($) { var inputosaurustext = { version: "0.1.6", eventprefix: "inputosaurus", options: { // bindable events // // 'change' - triggered whenever a tag is added or removed (should be similar to binding the the change event of the instantiated input // 'keyup' - keyup event on the newly created input // while typing, the user can separate values using these delimiters // the value tags are created on the fly when an inputDelimiter is detected inputDelimiters : [',', ';'], // this separator is used to rejoin all input items back to the value of the original <input> outputDelimiter : ',', allowDuplicates : false, parseOnBlur : false, // optional wrapper for widget wrapperElement : null, width : null, // simply passing an autoComplete source (array, string or function) will instantiate autocomplete functionality autoCompleteSource : '', // When forcing users to select from the autocomplete list, allow them to press 'Enter' to select an item if it's the only option left. activateFinalResult : false, // manipulate and return the input value after parseInput() parsing // the array of tag names is passed and expected to be returned as an array after manipulation parseHook : null, // define a placeholder to display when the input is empty placeholder: null, // when you check for duplicates it check for the case caseSensitiveDuplicates: false }, _create: function() { var widget = this, els = {}, o = widget.options, placeholder = o.placeholder || this.element.attr('placeholder') || null; this._chosenValues = []; // Create the elements els.ul = $('<ul class="inputosaurus-container">'); els.input = $('<input type="text" />'); els.inputCont = $('<li class="inputosaurus-input inputosaurus-required"></li>'); els.origInputCont = $('<li class="inputosaurus-input-hidden inputosaurus-required">'); // define starting placeholder if (placeholder) { o.placeholder = placeholder; els.input.attr('placeholder', o.placeholder); if (o.width) { els.input.css('min-width', o.width - 50); } } o.wrapperElement && o.wrapperElement.append(els.ul); this.element.replaceWith(o.wrapperElement || els.ul); els.origInputCont.append(this.element).hide(); els.inputCont.append(els.input); els.ul.append(els.inputCont); els.ul.append(els.origInputCont); o.width && els.ul.css('width', o.width); this.elements = els; widget._attachEvents(); // if instantiated input already contains a value, parse that junk if($.trim(this.element.val())){ els.input.val( this.element.val() ); this.parseInput(); } this._instAutocomplete(); }, _instAutocomplete : function() { if(this.options.autoCompleteSource){ var widget = this; this.elements.input.autocomplete({ position : { of : this.elements.ul }, source : this.options.autoCompleteSource, minLength : 1, select : function(ev, ui){ ev.preventDefault(); widget.elements.input.val(ui.item.value); widget.parseInput(); }, open : function() { // Older versions of jQueryUI have a different namespace var auto = $(this).data('ui-autocomplete') || $(this).data('autocomplete'); var menu = auto.menu, $menuItems; // zIndex will force the element on top of anything (like a dialog it's in) menu.element.zIndex && menu.element.zIndex($(this).zIndex() + 1); menu.element.width(widget.elements.ul.outerWidth()); // auto-activate the result if it's the only one if(widget.options.activateFinalResult){ $menuItems = menu.element.find('li'); // activate single item to allow selection upon pressing 'Enter' if($menuItems.size() === 1){ menu[menu.activate ? 'activate' : 'focus']($.Event('click'), $menuItems); } } } }); } }, _autoCompleteMenuPosition : function() { var widget; if(this.options.autoCompleteSource){ widget = this.elements.input.data('ui-autocomplete') || this.elements.input.data('autocomplete'); widget && widget.menu.element.position({ of: this.elements.ul, my: 'left top', at: 'left bottom', collision: 'none' }); } }, /*_closeAutoCompleteMenu : function() { if(this.options.autoCompleteSource){ this.elements.input.autocomplete('close'); } },*/ parseInput : function(ev) { var widget = (ev && ev.data.widget) || this, val, delimiterFound = false, values = []; val = widget.elements.input.val(); val && (delimiterFound = widget._containsDelimiter(val)); if(delimiterFound !== false){ values = val.split(delimiterFound); } else if(!ev || ev.which === $.ui.keyCode.ENTER && !$('.ui-menu-item.ui-state-focus').size() && !$('.ui-menu-item .ui-state-focus').size() && !$('#ui-active-menuitem').size()){ values.push(val); ev && ev.preventDefault(); // prevent autoComplete menu click from causing a false 'blur' } else if(ev.type === 'blur' && !$('#ui-active-menuitem').size()){ values.push(val); } $.isFunction(widget.options.parseHook) && (values = widget.options.parseHook(values)); if(values.length){ widget._setChosen(values); widget.elements.input.val(''); widget._resizeInput(); } widget._resetPlaceholder(); }, _inputFocus : function(ev) { var widget = ev.data.widget || this; widget.elements.input.value || (widget.options.autoCompleteSource.length && widget.elements.input.autocomplete('search', '')); }, _inputKeypress : function(ev) { var widget = ev.data.widget || this; ev.type === 'keyup' && widget._trigger('keyup', ev, widget); switch(ev.which){ case $.ui.keyCode.BACKSPACE: ev.type === 'keydown' && widget._inputBackspace(ev); break; case $.ui.keyCode.LEFT: ev.type === 'keydown' && widget._inputBackspace(ev); break; default : widget.parseInput(ev); widget._resizeInput(ev); } // reposition autoComplete menu as <ul> grows and shrinks vertically if(widget.options.autoCompleteSource){ setTimeout(function(){widget._autoCompleteMenuPosition.call(widget);}, 200); } }, // the input dynamically resizes based on the length of its value _resizeInput : function(ev) { var widget = (ev && ev.data.widget) || this, maxWidth = widget.elements.ul.width(), val = widget.elements.input.val(), txtWidth = 25 + val.length * 8; widget.elements.input.width(txtWidth < maxWidth ? txtWidth : maxWidth); }, // resets placeholder on representative input _resetPlaceholder: function () { var placeholder = this.options.placeholder, input = this.elements.input, width = this.options.width || 'inherit'; if (placeholder && this.element.val().length === 0) { input.attr('placeholder', placeholder).css('min-width', width - 50) }else { input.attr('placeholder', '').css('min-width', 'inherit') } }, // if our input contains no value and backspace has been pressed, select the last tag _inputBackspace : function(ev) { var widget = (ev && ev.data.widget) || this; lastTag = widget.elements.ul.find('li:not(.inputosaurus-required):last'); // IE goes back in history if the event isn't stopped ev.stopPropagation(); if((!$(ev.currentTarget).val() || (('selectionStart' in ev.currentTarget) && ev.currentTarget.selectionStart === 0 && ev.currentTarget.selectionEnd === 0)) && lastTag.size()){ ev.preventDefault(); lastTag.find('a').focus(); } }, _editTag : function(ev) { var widget = (ev && ev.data.widget) || this, tagName = '', $closest = $(ev.currentTarget).closest('li'), tagKey = $closest.data('ui-inputosaurus') || $closest.data('inputosaurus'); if(!tagKey){ return true; } ev.preventDefault(); $.each(widget._chosenValues, function(i,v) { v.key === tagKey && (tagName = v.value); }); widget.elements.input.val(tagName); widget._removeTag(ev); widget._resizeInput(ev); }, _tagKeypress : function(ev) { var widget = ev.data.widget; switch(ev.which){ case $.ui.keyCode.BACKSPACE: ev && ev.preventDefault(); ev && ev.stopPropagation(); $(ev.currentTarget).trigger('click'); break; // 'e' - edit tag (removes tag and places value into visible input case 69: widget._editTag(ev); break; case $.ui.keyCode.LEFT: ev.type === 'keydown' && widget._prevTag(ev); break; case $.ui.keyCode.RIGHT: ev.type === 'keydown' && widget._nextTag(ev); break; case $.ui.keyCode.DOWN: ev.type === 'keydown' && widget._focus(ev); break; } }, // select the previous tag or input if no more tags exist _prevTag : function(ev) { var widget = (ev && ev.data.widget) || this, tag = $(ev.currentTarget).closest('li'), previous = tag.prev(); if(previous.is('li')){ previous.find('a').focus(); } else { widget._focus(); } }, // select the next tag or input if no more tags exist _nextTag : function(ev) { var widget = (ev && ev.data.widget) || this, tag = $(ev.currentTarget).closest('li'), next = tag.next(); if(next.is('li:not(.inputosaurus-input)')){ next.find('a').focus(); } else { widget._focus(); } }, // return the inputDelimiter that was detected or false if none were found _containsDelimiter : function(tagStr) { var found = false; $.each(this.options.inputDelimiters, function(k,v) { if(tagStr.indexOf(v) !== -1){ found = v; } }); return found; }, _setChosen : function(valArr) { var self = this; if(!$.isArray(valArr)){ return false; } $.each(valArr, function(k,v) { var exists = false, obj = { key : '', value : '' }; v = $.trim(v); $.each(self._chosenValues, function(kk,vv) { if(!self.options.caseSensitiveDuplicates){ vv.value.toLowerCase() === v.toLowerCase() && (exists = true); } else{ vv.value === v && (exists = true); } }); if(v !== '' && (!exists || self.options.allowDuplicates)){ obj.key = 'mi_' + Math.random().toString( 16 ).slice( 2, 10 ); obj.value = v; self._chosenValues.push(obj); self._renderTags(); } }); self._setValue(self._buildValue()); }, _buildValue : function() { var widget = this, value = ''; $.each(this._chosenValues, function(k,v) { value += value.length ? widget.options.outputDelimiter + v.value : v.value; }); return value; }, _setValue : function(value) { var val = this.element.val(); if(val !== value){ this.element.val(value); this._trigger('change'); } }, // @name text for tag // @className optional className for <li> _createTag : function(name, key, className) { className = className ? ' class="' + className + '"' : ''; if(name !== undefined){ return $('<li' + className + ' data-inputosaurus="' + key + '"><span>' + name + '</span> <a href="javascript:void(0);" class="ficon">✖</a></li>'); } }, _renderTags : function() { var self = this; this.elements.ul.find('li:not(.inputosaurus-required)').remove(); $.each(this._chosenValues, function(k,v) { var el = self._createTag(v.value, v.key); self.elements.ul.find('li.inputosaurus-input').before(el); }); }, _removeTag : function(ev) { var $closest = $(ev.currentTarget).closest('li'), key = $closest.data('ui-inputosaurus') || $closest.data('inputosaurus'), indexFound = false, widget = (ev && ev.data.widget) || this; $.each(widget._chosenValues, function(k,v) { if(key === v.key){ indexFound = k; } }); indexFound !== false && widget._chosenValues.splice(indexFound, 1); widget._setValue(widget._buildValue()); $(ev.currentTarget).closest('li').remove(); widget.elements.input.focus(); }, _focus : function(ev) { var widget = (ev && ev.data.widget) || this, $closest = $(ev.target).closest('li'), $data = $closest.data('ui-inputosaurus') || $closest.data('inputosaurus'); if(!ev || !$data){ widget.elements.input.focus(); } }, _tagFocus : function(ev) { $(ev.currentTarget).parent()[ev.type === 'focusout' ? 'removeClass' : 'addClass']('inputosaurus-selected'); }, refresh : function() { var delim = this.options.outputDelimiter, val = this.element.val(), values = []; values.push(val); delim && (values = val.split(delim)); if(values.length){ this._chosenValues = []; $.isFunction(this.options.parseHook) && (values = this.options.parseHook(values)); this._setChosen(values); this._renderTags(); this.elements.input.val(''); this._resizeInput(); } }, _attachEvents : function() { var widget = this; this.elements.input.on('keyup.inputosaurus', {widget : widget}, this._inputKeypress); this.elements.input.on('keydown.inputosaurus', {widget : widget}, this._inputKeypress); this.elements.input.on('change.inputosaurus', {widget : widget}, this._inputKeypress); this.elements.input.on('focus.inputosaurus', {widget : widget}, this._inputFocus); this.options.parseOnBlur && this.elements.input.on('blur.inputosaurus', {widget : widget}, this.parseInput); this.elements.ul.on('click.inputosaurus', {widget : widget}, this._focus); this.elements.ul.on('click.inputosaurus', 'a', {widget : widget}, this._removeTag); this.elements.ul.on('dblclick.inputosaurus', 'li', {widget : widget}, this._editTag); this.elements.ul.on('focus.inputosaurus', 'a', {widget : widget}, this._tagFocus); this.elements.ul.on('blur.inputosaurus', 'a', {widget : widget}, this._tagFocus); this.elements.ul.on('keydown.inputosaurus', 'a', {widget : widget}, this._tagKeypress); }, _destroy: function() { this.elements.input.unbind('.inputosaurus'); this.elements.ul.replaceWith(this.element); } }; $.widget("ui.inputosaurus", inputosaurustext); })(jQuery); |