forked from samuel-p/sp-codes.de
409 lines
12 KiB
JavaScript
409 lines
12 KiB
JavaScript
'use strict';
|
|
|
|
!function($) {
|
|
|
|
/**
|
|
* Dropdown module.
|
|
* @module foundation.dropdown
|
|
* @requires foundation.util.keyboard
|
|
* @requires foundation.util.box
|
|
* @requires foundation.util.triggers
|
|
*/
|
|
|
|
class Dropdown {
|
|
/**
|
|
* Creates a new instance of a dropdown.
|
|
* @class
|
|
* @param {jQuery} element - jQuery object to make into a dropdown.
|
|
* Object should be of the dropdown panel, rather than its anchor.
|
|
* @param {Object} options - Overrides to the default plugin settings.
|
|
*/
|
|
constructor(element, options) {
|
|
this.$element = element;
|
|
this.options = $.extend({}, Dropdown.defaults, this.$element.data(), options);
|
|
this._init();
|
|
|
|
Foundation.registerPlugin(this, 'Dropdown');
|
|
Foundation.Keyboard.register('Dropdown', {
|
|
'ENTER': 'open',
|
|
'SPACE': 'open',
|
|
'ESCAPE': 'close',
|
|
'TAB': 'tab_forward',
|
|
'SHIFT_TAB': 'tab_backward'
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Initializes the plugin by setting/checking options and attributes, adding helper variables, and saving the anchor.
|
|
* @function
|
|
* @private
|
|
*/
|
|
_init() {
|
|
var $id = this.$element.attr('id');
|
|
|
|
this.$anchor = $(`[data-toggle="${$id}"]`) || $(`[data-open="${$id}"]`);
|
|
this.$anchor.attr({
|
|
'aria-controls': $id,
|
|
'data-is-focus': false,
|
|
'data-yeti-box': $id,
|
|
'aria-haspopup': true,
|
|
'aria-expanded': false
|
|
|
|
});
|
|
|
|
this.options.positionClass = this.getPositionClass();
|
|
this.counter = 4;
|
|
this.usedPositions = [];
|
|
this.$element.attr({
|
|
'aria-hidden': 'true',
|
|
'data-yeti-box': $id,
|
|
'data-resize': $id,
|
|
'aria-labelledby': this.$anchor[0].id || Foundation.GetYoDigits(6, 'dd-anchor')
|
|
});
|
|
this._events();
|
|
}
|
|
|
|
/**
|
|
* Helper function to determine current orientation of dropdown pane.
|
|
* @function
|
|
* @returns {String} position - string value of a position class.
|
|
*/
|
|
getPositionClass() {
|
|
var verticalPosition = this.$element[0].className.match(/(top|left|right|bottom)/g);
|
|
verticalPosition = verticalPosition ? verticalPosition[0] : '';
|
|
var horizontalPosition = /float-(\S+)\s/.exec(this.$anchor[0].className);
|
|
horizontalPosition = horizontalPosition ? horizontalPosition[1] : '';
|
|
var position = horizontalPosition ? horizontalPosition + ' ' + verticalPosition : verticalPosition;
|
|
return position;
|
|
}
|
|
|
|
/**
|
|
* Adjusts the dropdown panes orientation by adding/removing positioning classes.
|
|
* @function
|
|
* @private
|
|
* @param {String} position - position class to remove.
|
|
*/
|
|
_reposition(position) {
|
|
this.usedPositions.push(position ? position : 'bottom');
|
|
//default, try switching to opposite side
|
|
if(!position && (this.usedPositions.indexOf('top') < 0)){
|
|
this.$element.addClass('top');
|
|
}else if(position === 'top' && (this.usedPositions.indexOf('bottom') < 0)){
|
|
this.$element.removeClass(position);
|
|
}else if(position === 'left' && (this.usedPositions.indexOf('right') < 0)){
|
|
this.$element.removeClass(position)
|
|
.addClass('right');
|
|
}else if(position === 'right' && (this.usedPositions.indexOf('left') < 0)){
|
|
this.$element.removeClass(position)
|
|
.addClass('left');
|
|
}
|
|
|
|
//if default change didn't work, try bottom or left first
|
|
else if(!position && (this.usedPositions.indexOf('top') > -1) && (this.usedPositions.indexOf('left') < 0)){
|
|
this.$element.addClass('left');
|
|
}else if(position === 'top' && (this.usedPositions.indexOf('bottom') > -1) && (this.usedPositions.indexOf('left') < 0)){
|
|
this.$element.removeClass(position)
|
|
.addClass('left');
|
|
}else if(position === 'left' && (this.usedPositions.indexOf('right') > -1) && (this.usedPositions.indexOf('bottom') < 0)){
|
|
this.$element.removeClass(position);
|
|
}else if(position === 'right' && (this.usedPositions.indexOf('left') > -1) && (this.usedPositions.indexOf('bottom') < 0)){
|
|
this.$element.removeClass(position);
|
|
}
|
|
//if nothing cleared, set to bottom
|
|
else{
|
|
this.$element.removeClass(position);
|
|
}
|
|
this.classChanged = true;
|
|
this.counter--;
|
|
}
|
|
|
|
/**
|
|
* Sets the position and orientation of the dropdown pane, checks for collisions.
|
|
* Recursively calls itself if a collision is detected, with a new position class.
|
|
* @function
|
|
* @private
|
|
*/
|
|
_setPosition() {
|
|
if(this.$anchor.attr('aria-expanded') === 'false'){ return false; }
|
|
var position = this.getPositionClass(),
|
|
$eleDims = Foundation.Box.GetDimensions(this.$element),
|
|
$anchorDims = Foundation.Box.GetDimensions(this.$anchor),
|
|
_this = this,
|
|
direction = (position === 'left' ? 'left' : ((position === 'right') ? 'left' : 'top')),
|
|
param = (direction === 'top') ? 'height' : 'width',
|
|
offset = (param === 'height') ? this.options.vOffset : this.options.hOffset;
|
|
|
|
|
|
|
|
if(($eleDims.width >= $eleDims.windowDims.width) || (!this.counter && !Foundation.Box.ImNotTouchingYou(this.$element))){
|
|
this.$element.offset(Foundation.Box.GetOffsets(this.$element, this.$anchor, 'center bottom', this.options.vOffset, this.options.hOffset, true)).css({
|
|
'width': $eleDims.windowDims.width - (this.options.hOffset * 2),
|
|
'height': 'auto'
|
|
});
|
|
this.classChanged = true;
|
|
return false;
|
|
}
|
|
|
|
this.$element.offset(Foundation.Box.GetOffsets(this.$element, this.$anchor, position, this.options.vOffset, this.options.hOffset));
|
|
|
|
while(!Foundation.Box.ImNotTouchingYou(this.$element, false, true) && this.counter){
|
|
this._reposition(position);
|
|
this._setPosition();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds event listeners to the element utilizing the triggers utility library.
|
|
* @function
|
|
* @private
|
|
*/
|
|
_events() {
|
|
var _this = this;
|
|
this.$element.on({
|
|
'open.zf.trigger': this.open.bind(this),
|
|
'close.zf.trigger': this.close.bind(this),
|
|
'toggle.zf.trigger': this.toggle.bind(this),
|
|
'resizeme.zf.trigger': this._setPosition.bind(this)
|
|
});
|
|
|
|
if(this.options.hover){
|
|
this.$anchor.off('mouseenter.zf.dropdown mouseleave.zf.dropdown')
|
|
.on('mouseenter.zf.dropdown', function(){
|
|
clearTimeout(_this.timeout);
|
|
_this.timeout = setTimeout(function(){
|
|
_this.open();
|
|
_this.$anchor.data('hover', true);
|
|
}, _this.options.hoverDelay);
|
|
}).on('mouseleave.zf.dropdown', function(){
|
|
clearTimeout(_this.timeout);
|
|
_this.timeout = setTimeout(function(){
|
|
_this.close();
|
|
_this.$anchor.data('hover', false);
|
|
}, _this.options.hoverDelay);
|
|
});
|
|
if(this.options.hoverPane){
|
|
this.$element.off('mouseenter.zf.dropdown mouseleave.zf.dropdown')
|
|
.on('mouseenter.zf.dropdown', function(){
|
|
clearTimeout(_this.timeout);
|
|
}).on('mouseleave.zf.dropdown', function(){
|
|
clearTimeout(_this.timeout);
|
|
_this.timeout = setTimeout(function(){
|
|
_this.close();
|
|
_this.$anchor.data('hover', false);
|
|
}, _this.options.hoverDelay);
|
|
});
|
|
}
|
|
}
|
|
this.$anchor.add(this.$element).on('keydown.zf.dropdown', function(e) {
|
|
|
|
var $target = $(this),
|
|
visibleFocusableElements = Foundation.Keyboard.findFocusable(_this.$element);
|
|
|
|
Foundation.Keyboard.handleKey(e, 'Dropdown', {
|
|
tab_forward: function() {
|
|
if (_this.$element.find(':focus').is(visibleFocusableElements.eq(-1))) { // left modal downwards, setting focus to first element
|
|
if (_this.options.trapFocus) { // if focus shall be trapped
|
|
visibleFocusableElements.eq(0).focus();
|
|
e.preventDefault();
|
|
} else { // if focus is not trapped, close dropdown on focus out
|
|
_this.close();
|
|
}
|
|
}
|
|
},
|
|
tab_backward: function() {
|
|
if (_this.$element.find(':focus').is(visibleFocusableElements.eq(0)) || _this.$element.is(':focus')) { // left modal upwards, setting focus to last element
|
|
if (_this.options.trapFocus) { // if focus shall be trapped
|
|
visibleFocusableElements.eq(-1).focus();
|
|
e.preventDefault();
|
|
} else { // if focus is not trapped, close dropdown on focus out
|
|
_this.close();
|
|
}
|
|
}
|
|
},
|
|
open: function() {
|
|
if ($target.is(_this.$anchor)) {
|
|
_this.open();
|
|
_this.$element.attr('tabindex', -1).focus();
|
|
e.preventDefault();
|
|
}
|
|
},
|
|
close: function() {
|
|
_this.close();
|
|
_this.$anchor.focus();
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Adds an event handler to the body to close any dropdowns on a click.
|
|
* @function
|
|
* @private
|
|
*/
|
|
_addBodyHandler() {
|
|
var $body = $(document.body).not(this.$element),
|
|
_this = this;
|
|
$body.off('click.zf.dropdown')
|
|
.on('click.zf.dropdown', function(e){
|
|
if(_this.$anchor.is(e.target) || _this.$anchor.find(e.target).length) {
|
|
return;
|
|
}
|
|
if(_this.$element.find(e.target).length) {
|
|
return;
|
|
}
|
|
_this.close();
|
|
$body.off('click.zf.dropdown');
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Opens the dropdown pane, and fires a bubbling event to close other dropdowns.
|
|
* @function
|
|
* @fires Dropdown#closeme
|
|
* @fires Dropdown#show
|
|
*/
|
|
open() {
|
|
// var _this = this;
|
|
/**
|
|
* Fires to close other open dropdowns
|
|
* @event Dropdown#closeme
|
|
*/
|
|
this.$element.trigger('closeme.zf.dropdown', this.$element.attr('id'));
|
|
this.$anchor.addClass('hover')
|
|
.attr({'aria-expanded': true});
|
|
// this.$element/*.show()*/;
|
|
this._setPosition();
|
|
this.$element.addClass('is-open')
|
|
.attr({'aria-hidden': false});
|
|
|
|
if(this.options.autoFocus){
|
|
var $focusable = Foundation.Keyboard.findFocusable(this.$element);
|
|
if($focusable.length){
|
|
$focusable.eq(0).focus();
|
|
}
|
|
}
|
|
|
|
if(this.options.closeOnClick){ this._addBodyHandler(); }
|
|
|
|
/**
|
|
* Fires once the dropdown is visible.
|
|
* @event Dropdown#show
|
|
*/
|
|
this.$element.trigger('show.zf.dropdown', [this.$element]);
|
|
}
|
|
|
|
/**
|
|
* Closes the open dropdown pane.
|
|
* @function
|
|
* @fires Dropdown#hide
|
|
*/
|
|
close() {
|
|
if(!this.$element.hasClass('is-open')){
|
|
return false;
|
|
}
|
|
this.$element.removeClass('is-open')
|
|
.attr({'aria-hidden': true});
|
|
|
|
this.$anchor.removeClass('hover')
|
|
.attr('aria-expanded', false);
|
|
|
|
if(this.classChanged){
|
|
var curPositionClass = this.getPositionClass();
|
|
if(curPositionClass){
|
|
this.$element.removeClass(curPositionClass);
|
|
}
|
|
this.$element.addClass(this.options.positionClass)
|
|
/*.hide()*/.css({height: '', width: ''});
|
|
this.classChanged = false;
|
|
this.counter = 4;
|
|
this.usedPositions.length = 0;
|
|
}
|
|
this.$element.trigger('hide.zf.dropdown', [this.$element]);
|
|
}
|
|
|
|
/**
|
|
* Toggles the dropdown pane's visibility.
|
|
* @function
|
|
*/
|
|
toggle() {
|
|
if(this.$element.hasClass('is-open')){
|
|
if(this.$anchor.data('hover')) return;
|
|
this.close();
|
|
}else{
|
|
this.open();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Destroys the dropdown.
|
|
* @function
|
|
*/
|
|
destroy() {
|
|
this.$element.off('.zf.trigger').hide();
|
|
this.$anchor.off('.zf.dropdown');
|
|
|
|
Foundation.unregisterPlugin(this);
|
|
}
|
|
}
|
|
|
|
Dropdown.defaults = {
|
|
/**
|
|
* Amount of time to delay opening a submenu on hover event.
|
|
* @option
|
|
* @example 250
|
|
*/
|
|
hoverDelay: 250,
|
|
/**
|
|
* Allow submenus to open on hover events
|
|
* @option
|
|
* @example false
|
|
*/
|
|
hover: false,
|
|
/**
|
|
* Don't close dropdown when hovering over dropdown pane
|
|
* @option
|
|
* @example true
|
|
*/
|
|
hoverPane: false,
|
|
/**
|
|
* Number of pixels between the dropdown pane and the triggering element on open.
|
|
* @option
|
|
* @example 1
|
|
*/
|
|
vOffset: 1,
|
|
/**
|
|
* Number of pixels between the dropdown pane and the triggering element on open.
|
|
* @option
|
|
* @example 1
|
|
*/
|
|
hOffset: 1,
|
|
/**
|
|
* Class applied to adjust open position. JS will test and fill this in.
|
|
* @option
|
|
* @example 'top'
|
|
*/
|
|
positionClass: '',
|
|
/**
|
|
* Allow the plugin to trap focus to the dropdown pane if opened with keyboard commands.
|
|
* @option
|
|
* @example false
|
|
*/
|
|
trapFocus: false,
|
|
/**
|
|
* Allow the plugin to set focus to the first focusable element within the pane, regardless of method of opening.
|
|
* @option
|
|
* @example true
|
|
*/
|
|
autoFocus: false,
|
|
/**
|
|
* Allows a click on the body to close the dropdown.
|
|
* @option
|
|
* @example false
|
|
*/
|
|
closeOnClick: false
|
|
}
|
|
|
|
// Window exports
|
|
Foundation.plugin(Dropdown, 'Dropdown');
|
|
|
|
}(jQuery);
|