hand-detection/assets/plugin/popover/jquery.popSelect.js

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2024-05-29 03:18:12 +00:00
/*
* popselect - v0.1.14
* Replaces traditional <select> with a options from popover
* http://jquer.in/popselect
*
* Made by Jay Kanakiya
* Under MIT License
*/
;(function($, window, document, undefined) {
'use strict';
// Create the defaults once
var pluginName = 'popSelect';
var defaults = {
position: 'top',
showTitle: true,
autoIncrease: true,
title: 'Select Multiple Options',
debug: false,
maxAllowed: 0,
placeholderText: 'Click to Add Values',
autofocus: false
};
var classNames = {
tag: 'tag',
arrow: 'arrow',
selectWrapper: 'popover-select-wrapper',
tagWrapper: 'popover-tag-wrapper',
popoverSelect: 'popover-select',
popoverBody: 'popover-select-body',
selectTextarea: 'popover-select-textarea',
selectTags: 'popover-select-tags',
popoverClose: 'popSelect-close',
selectList: 'popover-select-list',
popoverDisabled: 'disabled',
placeholder: 'placeholder',
placeholderInput: 'placeholder input',
placeholderText: 'placeholder-text',
selectTitle: 'popover-select-title',
top: 'top'
};
var logs = {
popoverGenerated: 'PopSelect Code Generated',
closeClicked: 'Close button clicked',
noElem: 'No element to be removed',
unSupported: 'Not Supported',
posChanged: 'Position changed'
};
var constants = {
option: 'option',
blur: 'blur',
click: 'click',
mousedown: 'mousedown',
li: 'li',
attrVal: 'data-value',
attrText: 'data-text',
body: 'BODY'
};
// The actual plugin constructor
function Plugin(element, options) {
this.element = element;
// jQuery has an extend method which merges the contents of two or
// more objects, storing the result in the first object. The first object
// is generally empty as we don't want to alter the default options for
// future instances of the plugin
this.settings = $.extend({}, defaults, options);
this._defaults = defaults;
this._name = pluginName;
this.init();
}
// Avoid Plugin.prototype conflicts
$.extend(Plugin.prototype, {
init: function() {
var $this = this;
this.$elem = $(this.element);
// Get all the options in an array
this.$options = this.$elem.children(constants.option).map(function(i, option) {
return {
val: $(option).val(),
text: $(option).text(),
selected: $(option).attr('selected')
};
});
// Wrap the whole input box in your own popover
this.$elem.wrap(template(createEmptyDiv(), {
wrapper: classNames.selectWrapper
}));
var elemPos = this.getPosition(this.$elem);
this.elemPos = elemPos;
// Also Add the required css Properties
this.$elem
.parent(addDot(classNames.selectWrapper))
.css({width: this.settings.width || elemPos.width, height: elemPos.height});
// Append the popover to $elem
var popUpCode = this.generatePopover(this.$options);
$this.log(logs.popoverGenerated, popUpCode);
this.$elem.after(popUpCode);
// Assign the $popover to the new $elem
this.$popover = this.$elem.next(addDot(classNames.popoverSelect));
this.$popover.css({top: 0, left: 0});
// Append Tagging System to it
this.$elem.after(createTaggingStr(this.settings.placeholderText, this.$options));
// Get the Tag Wrapper for later use
this.$tagWrapper = this.$elem.next(addDot(classNames.tagWrapper));
this.baseHeight = this.$tagWrapper.height();
// Get the input
this.$inputTagField = this.$tagWrapper.find(addDot(classNames.selectTextarea));
// Hide the popover when blurring the inputTagField
this.$inputTagField.on(constants.blur, function() {
$this.$popover.hide();
});
// Get the tags in the wrapper
this.$tags = this.$tagWrapper.find(addDot(classNames.selectTags));
// Show Popover on click of tags
this.$tags
.on(constants.click, this.initializePopover.bind(this));
// Also Attach to placeHolder Text
this.$tags.next(addDot(classNames.placeholderText))
.on(constants.click, this.initializePopover.bind(this));
// Attach Event Listener to ul list
this.$tags.on(constants.click, addDot(classNames.popoverClose), function() {
$this.inputToPopover($(this));
});
// Attach List Event Handlers to Li
this.$popover.find(addDot(classNames.selectList)).on(constants.mousedown, function(e) {
e.preventDefault();
}).on(constants.click, constants.li, function() {
$this.popoverToInput($(this));
});
// Finally Hide the Element
this.$elem.hide();
// Required for placeholdertext and pre-selected values
this.checkNumberOfTags();
// If pre-selected are higher than normal
this.changeSize();
// Trigger init event
this.$elem.trigger('popselect:init');
if (this.settings.autofocus) {
this.initializePopover();
}
},
inputToPopover: function($elem) {
var $li = $elem.parent();
this.log(logs.closeClicked, $li);
var val = $li.attr(constants.attrVal);
var text = $li.attr(constants.attrText);
// Remove them from input and add it to popover
this.appendToPopup(val, text);
$li.remove();
// Standard Reset Calls
this.setPlaceholder();
this.focus();
// Whether to increase/decrease width
this.changeSize();
// Whether to enable / disable popover and Placeholder Text
this.checkNumberOfTags();
// Trigger remove event, passing value and text of removed tag
this.$elem.trigger('popselect:remove', [val, text]);
},
enablePopover: function() {
this.$popover.find(addDot(classNames.selectList) + ' li')
.removeClass(classNames.popoverDisabled);
},
disablePopover: function() {
this.$popover.find(addDot(classNames.selectList) + ' li')
.addClass(classNames.popoverDisabled);
},
checkNumberOfTags: function() {
var currentNo = this.$tags.find(addDot(classNames.tag)).length;
if (currentNo === 0) {
this.enablePlaceHolderText();
} else {
this.disablePlaceHolderText();
}
if (this.settings.maxAllowed !== 0) {
if (this.settings.maxAllowed > currentNo) {
this.enablePopover();
} else {
this.disablePopover();
}
}
this.syncWithSelect();
},
popoverToInput: function($elem) {
var val = $elem.attr(constants.attrVal);
var text = $elem.text();
var li = createTagStr(val, text);
// Remove them from popover and it to input
this.$tags.append(li);
$elem.remove();
// Standard Reset Calls
this.setPlaceholder();
this.focus();
this.popoverShow();
this.changePosition();
// Whether to increase/decrease width
this.changeSize();
// Enable / Disable Popover
this.checkNumberOfTags();
// Trigger add event, passing value and text of added tag
this.$elem.trigger('popselect:add', [val, text]);
},
popoverShow: function() {
// Change Position as well show popover
if (this.$popover.find(addDot(classNames.selectList) + ' li').length) {
this.$popover.show();
} else {
this.$popover.hide();
}
},
initializePopover: function() {
this.popoverShow();
this.changePosition();
this.setPlaceholder();
this.focus();
},
enablePlaceHolderText: function() {
this.$tags.next(addDot(classNames.placeholderText)).show();
},
disablePlaceHolderText: function() {
this.$tags.next(addDot(classNames.placeholderText)).hide();
},
focus: function() {
var $this = this;
this.$tags.find(addDot(classNames.placeholderInput)).focus();
this.$tags.find(addDot(classNames.placeholderInput)).on(constants.blur, function() {
$this.$popover.hide();
});
},
setPlaceholder: function() {
if (this.$tags.children(addDot(classNames.placeholder)).length) {
this.$tags.children(addDot(classNames.placeholder)).remove();
}
this.$tags.append(createPlaceholderInput());
this.disableInput();
},
disableInput: function() {
var $this = this;
this.$tags.find(addDot(classNames.placeholderInput)).keyup(function(e) {
// Empty the input always
$(this).val('');
// For delete key, backspace and Ctrl + x Key
if (e.which === 8 || e.which === 46 || e.ctrlKey && e.which === 88) {
$this.removeLastElem();
}
});
},
changeSize: function() {
if (this.settings.autoIncrease) {
var tagWidth = 0;
var textWidth = this.settings.width || this.elemPos.width;
this.$tags.find(addDot(classNames.tag)).each(function(i, elem) {
tagWidth += $(elem).outerWidth() + 20;
});
var mHeight = Math.floor(tagWidth / textWidth);
this.$tags.height((mHeight + 1) * this.baseHeight);
}
},
removeLastElem: function() {
// Delete the last selected li if present
var tags = this.$tags.find(addDot(classNames.tag));
if (tags.length) {
var $li = $(tags[tags.length - 1]);
var val = $li.attr(constants.attrVal);
var text = $li.attr(constants.attrText);
// Remove them from input and add it to popover
this.appendToPopup(val, text);
$li.remove();
// Standard Reset Calls
this.changePosition();
this.setPlaceholder();
this.focus();
// Whether to increase/decrease width
this.changeSize();
// Enable / Disable Popover
this.checkNumberOfTags();
} else {
this.log(logs.noElem);
}
},
setTitle: function(title) {
if (this.settings.showTitle) {
this.$popover.find(addDot(classNames.selectTitle)).text(title);
}
},
getPosition: function($element) {
$element = $element || this.$element;
var el = $element[0];
var isBody = el.tagName === constants.body;
var elRect = el.getBoundingClientRect();
if (elRect.width == null) {
var w = elRect.right - elRect.left;
var h = elRect.bottom - elRect.top;
elRect = $.extend({}, elRect, {width: w, height: h});
}
var elOffset = isBody ? {top: 0, left: 0} : $element.offset();
/* jshint ignore:start */
var scroll = {scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
/* jshint ignore:end */
var outerDims = isBody ? {width: $(window).width(), height: $(window).height()} : null;
return $.extend({}, elRect, scroll, outerDims, elOffset);
},
syncWithSelect: function() {
var arrValues = this.$tags.find(addDot(classNames.tag)).map(function(i, elem) {
return $(elem).attr('data-value');
}).toArray();
this.$elem.children(constants.option).each(function(i, option) {
if (arrValues.indexOf($(option).val()) < 0) {
$(option).removeAttr('selected');
} else {
$(option).attr('selected', 'selected');
}
});
},
appendToPopup: function(val, text) {
var li = createLiTag(val, text);
this.$popover.find(addDot(classNames.selectList)).append(li);
},
generatePopover: function(options) {
var list = '';
for (var i = 0; i < options.length; i++) {
if (!options[i].selected) {
list += createLiTag(options[i].val, options[i].text);
}
}
var popoverStr = createPopoverStr(list, this.settings);
return popoverStr;
},
changePosition: function() {
// It first needs to be placed
var popPos = this.getPosition(this.$popover);
var tagPos = this.getPosition(this.$tagWrapper);
var leftOffset = ((this.settings.width || this.elemPos.width) / 2) - (popPos.width / 2);
var topOffset;
if (this.settings.position === 'top') {
topOffset = -(popPos.height);
} else {
topOffset = tagPos.height;
}
this.log('popPos.width', popPos.width);
this.log(logs.posChanged, topOffset, leftOffset);
this.$popover.css({top: topOffset, left: leftOffset});
},
log: function() {
if (this.settings.debug) {
console.log.apply(console, arguments);
}
}
});
/**
* A quick helper function for creating templates
* @param {string} s Template String
* @param {object} d Values to replace for
* @return {string} Populated template string
*/
function template(s, d) {
for (var p in d) {
s = s.replace(new RegExp('{' + p + '}', 'g'), d[p]);
}
return s;
}
/**
* Just adds a dot for easy class selection
* @param {string} str DOM className
* @return {string} jQuery selector
*/
function addDot(str) {
return '.' + str;
}
function createEmptyDiv(x) {
if (x) {
return '<div class="{' + x + '}"></div>';
} else {
return '<div class="{wrapper}"></div>';
}
}
function createTagsLi(options) {
var str = '';
for (var i = 0; i < options.length; i++) {
if (options[i].selected) {
str += createTagStr(options[i].val, options[i].text);
}
}
return str;
}
function createTaggingStr(text, options) {
return template('<div class="{tagWrapper}">' +
'<textarea class="{selectTextarea}"></textarea>' +
'<ul class="{selectTags}">' +
'{tags}' +
'</ul>' +
'<div class="{placeholderText}">' +
'{text}' +
'</div>' +
'</div>', {
tags: createTagsLi(options),
text: text,
placeholderText: classNames.placeholderText,
tagWrapper: classNames.tagWrapper,
selectTextarea: classNames.selectTextarea,
selectTags: classNames.selectTags
});
}
function createTagStr(val, text) {
return template('<li class="{tag}" data-value="{val}" data-text="{text}">' +
'<span class="{popoverClose}">&times;</span>{text}' +
'</li>', {
text: text,
val: val,
tag: classNames.tag,
popoverClose: classNames.popoverClose
});
}
function createLiTag(val, text) {
return template('<li data-value="{val}" data-text="{text}">{text}</li>', {
val: val,
text: text
});
}
function createPlaceholderInput() {
return template('<li class="{placeholder}">' +
'<div>' +
'<input type="text" readonly="true">' +
'</div>' +
'</li>', {
placeholder: classNames.placeholder
});
}
function createPopoverStr(list, settings) {
return template('<div class="{popoverSelect} {top}">' +
(settings.showTitle ? '<h3 class="{selectTitle}">{title}</h3>' : '') +
'<div class="{popoverBody}">' +
'<ul class="{selectList}">' +
'{list}' +
'</ul>' +
'</div>' +
'<div class="{arrow}"></div>' +
'</div>', {
title: settings.title,
list: list,
arrow: classNames.arrow,
popoverSelect: classNames.popoverSelect,
popoverBody: classNames.popoverBody,
selectList: classNames.selectList,
top: settings.position,
selectTitle: classNames.selectTitle
});
}
// A really lightweight plugin wrapper around the constructor,
// preventing against multiple instantiations
$.fn.popSelect = function(options) {
if (typeof(options) === 'string') {
if (options === 'value') {
return this.next(addDot(classNames.tagWrapper))
.find(addDot(classNames.tag)).map(function(i, $elem) {
return $($elem).attr(constants.attrVal);
});
} else {
console.warn(logs.unSupported);
}
} else {
return this.each(function() {
if (!$.data(this, 'plugin_' + pluginName)) {
$.data(this, 'plugin_' + pluginName, new Plugin(this, options));
}
});
}
};
})(jQuery, window, document);