js/chips.js
(function ($) {
var materialChipsDefaults = {
data: [],
placeholder: '',
secondaryPlaceholder: '',
autocompleteOptions: {},
};
$(document).ready(function() {
// Handle removal of static chips.
$(document).on('click', '.chip .close', function(e){
var $chips = $(this).closest('.chips');
if ($chips.attr('data-initialized')) {
return;
}
$(this).closest('.chip').remove();
});
});
$.fn.material_chip = function (options) {
var self = this;
this.$el = $(this);
this.$document = $(document);
this.SELS = {
CHIPS: '.chips',
CHIP: '.chip',
INPUT: 'input',
DELETE: '.material-icons',
SELECTED_CHIP: '.selected',
};
if ('data' === options) {
return this.$el.data('chips');
}
var curr_options = $.extend({}, materialChipsDefaults, options);
self.hasAutocomplete = !$.isEmptyObject(curr_options.autocompleteOptions.data);
// Initialize
this.init = function() {
var i = 0;
var chips;
self.$el.each(function(){
var $chips = $(this);
var chipId = Materialize.guid();
self.chipId = chipId;
if (!curr_options.data || !(curr_options.data instanceof Array)) {
curr_options.data = [];
}
$chips.data('chips', curr_options.data);
$chips.attr('data-index', i);
$chips.attr('data-initialized', true);
if (!$chips.hasClass(self.SELS.CHIPS)) {
$chips.addClass('chips');
}
self.chips($chips, chipId);
i++;
});
};
this.handleEvents = function() {
var SELS = self.SELS;
self.$document.off('click.chips-focus', SELS.CHIPS).on('click.chips-focus', SELS.CHIPS, function(e){
$(e.target).find(SELS.INPUT).focus();
});
self.$document.off('click.chips-select', SELS.CHIP).on('click.chips-select', SELS.CHIP, function(e){
var $chip = $(e.target);
if ($chip.length) {
var wasSelected = $chip.hasClass('selected');
var $chips = $chip.closest(SELS.CHIPS);
$(SELS.CHIP).removeClass('selected');
if (!wasSelected) {
self.selectChip($chip.index(), $chips);
}
}
});
self.$document.off('keydown.chips').on('keydown.chips', function(e){
if ($(e.target).is('input, textarea')) {
return;
}
// delete
var $chip = self.$document.find(SELS.CHIP + SELS.SELECTED_CHIP);
var $chips = $chip.closest(SELS.CHIPS);
var length = $chip.siblings(SELS.CHIP).length;
var index;
if (!$chip.length) {
return;
}
if (e.which === 8 || e.which === 46) {
e.preventDefault();
index = $chip.index();
self.deleteChip(index, $chips);
var selectIndex = null;
if ((index + 1) < length) {
selectIndex = index;
} else if (index === length || (index + 1) === length) {
selectIndex = length - 1;
}
if (selectIndex < 0) selectIndex = null;
if (null !== selectIndex) {
self.selectChip(selectIndex, $chips);
}
if (!length) $chips.find('input').focus();
// left
} else if (e.which === 37) {
index = $chip.index() - 1;
if (index < 0) {
return;
}
$(SELS.CHIP).removeClass('selected');
self.selectChip(index, $chips);
// right
} else if (e.which === 39) {
index = $chip.index() + 1;
$(SELS.CHIP).removeClass('selected');
if (index > length) {
$chips.find('input').focus();
return;
}
self.selectChip(index, $chips);
}
});
self.$document.off('focusin.chips', SELS.CHIPS + ' ' + SELS.INPUT).on('focusin.chips', SELS.CHIPS + ' ' + SELS.INPUT, function(e){
var $currChips = $(e.target).closest(SELS.CHIPS);
$currChips.addClass('focus');
$currChips.siblings('label, .prefix').addClass('active');
$(SELS.CHIP).removeClass('selected');
});
self.$document.off('focusout.chips', SELS.CHIPS + ' ' + SELS.INPUT).on('focusout.chips', SELS.CHIPS + ' ' + SELS.INPUT, function(e){
var $currChips = $(e.target).closest(SELS.CHIPS);
$currChips.removeClass('focus');
// Remove active if empty
if ($currChips.data('chips') === undefined || !$currChips.data('chips').length) {
$currChips.siblings('label').removeClass('active');
}
$currChips.siblings('.prefix').removeClass('active');
});
self.$document.off('keydown.chips-add', SELS.CHIPS + ' ' + SELS.INPUT).on('keydown.chips-add', SELS.CHIPS + ' ' + SELS.INPUT, function(e){
var $target = $(e.target);
var $chips = $target.closest(SELS.CHIPS);
var chipsLength = $chips.children(SELS.CHIP).length;
// enter
if (13 === e.which) {
// Override enter if autocompleting.
if (self.hasAutocomplete &&
$chips.find('.autocomplete-content.dropdown-content').length &&
$chips.find('.autocomplete-content.dropdown-content').children().length) {
return;
}
e.preventDefault();
self.addChip({tag: $target.val()}, $chips);
$target.val('');
return;
}
// delete or left
if ((8 === e.keyCode || 37 === e.keyCode) && '' === $target.val() && chipsLength) {
e.preventDefault();
self.selectChip(chipsLength - 1, $chips);
$target.blur();
return;
}
});
// Click on delete icon in chip.
self.$document.off('click.chips-delete', SELS.CHIPS + ' ' + SELS.DELETE).on('click.chips-delete', SELS.CHIPS + ' ' + SELS.DELETE, function(e) {
var $target = $(e.target);
var $chips = $target.closest(SELS.CHIPS);
var $chip = $target.closest(SELS.CHIP);
e.stopPropagation();
self.deleteChip($chip.index(), $chips);
$chips.find('input').focus();
});
};
this.chips = function($chips, chipId) {
$chips.empty();
$chips.data('chips').forEach(function(elem){
$chips.append(self.renderChip(elem));
});
$chips.append($('<input id="' + chipId +'" class="input" placeholder="">'));
self.setPlaceholder($chips);
// Set for attribute for label
var label = $chips.next('label');
if (label.length) {
label.attr('for', chipId);
if ($chips.data('chips')!== undefined && $chips.data('chips').length) {
label.addClass('active');
}
}
// Setup autocomplete if needed.
var input = $('#' + chipId);
if (self.hasAutocomplete) {
curr_options.autocompleteOptions.onAutocomplete = function(val) {
self.addChip({tag: val}, $chips);
input.val('');
input.focus();
}
input.autocomplete(curr_options.autocompleteOptions);
}
};
/**
* Render chip jQuery element.
* @param {Object} elem
* @return {jQuery}
*/
this.renderChip = function(elem) {
if (!elem.tag) return;
var $renderedChip = $('<div class="chip"></div>');
$renderedChip.text(elem.tag);
if (elem.image) {
$renderedChip.prepend($('<img />').attr('src', elem.image))
}
$renderedChip.append($('<i class="material-icons close">close</i>'));
return $renderedChip;
};
this.setPlaceholder = function($chips) {
if (($chips.data('chips') !== undefined && !$chips.data('chips').length) && curr_options.placeholder) {
$chips.find('input').prop('placeholder', curr_options.placeholder);
} else if (($chips.data('chips') === undefined || !!$chips.data('chips').length) && curr_options.secondaryPlaceholder) {
$chips.find('input').prop('placeholder', curr_options.secondaryPlaceholder);
}
};
this.isValid = function($chips, elem) {
var chips = $chips.data('chips');
var exists = false;
for (var i=0; i < chips.length; i++) {
if (chips[i].tag === elem.tag) {
exists = true;
return;
}
}
return '' !== elem.tag && !exists;
};
this.addChip = function(elem, $chips) {
if (!self.isValid($chips, elem)) {
return;
}
var $renderedChip = self.renderChip(elem);
var newData = [];
var oldData = $chips.data('chips');
for (var i = 0; i < oldData.length; i++) {
newData.push(oldData[i]);
}
newData.push(elem);
$chips.data('chips', newData);
$renderedChip.insertBefore($chips.find('input'));
$chips.trigger('chip.add', elem);
self.setPlaceholder($chips);
};
this.deleteChip = function(chipIndex, $chips) {
var chip = $chips.data('chips')[chipIndex];
$chips.find('.chip').eq(chipIndex).remove();
var newData = [];
var oldData = $chips.data('chips');
for (var i = 0; i < oldData.length; i++) {
if (i !== chipIndex) {
newData.push(oldData[i]);
}
}
$chips.data('chips', newData);
$chips.trigger('chip.delete', chip);
self.setPlaceholder($chips);
};
this.selectChip = function(chipIndex, $chips) {
var $chip = $chips.find('.chip').eq(chipIndex);
if ($chip && false === $chip.hasClass('selected')) {
$chip.addClass('selected');
$chips.trigger('chip.select', $chips.data('chips')[chipIndex]);
}
};
this.getChipsElement = function(index, $chips) {
return $chips.eq(index);
};
// init
this.init();
this.handleEvents();
};
}( jQuery ));