624680bb93
- This is a first pass at getting a more logical structure. The focus is on moving from admin/frontend to client/server. - The location of the databases is highly important, this isn't expected to change again In the future - client/assets should probably become public/ - more stuff should be shared (helpers etc) - cleanup some confusion around tpl and views
377 lines
11 KiB
JavaScript
377 lines
11 KiB
JavaScript
/**
|
|
* Countable is a script to allow for live paragraph-, word- and character-
|
|
* counting on an HTML element.
|
|
*
|
|
* @author Sacha Schmid (<https://github.com/RadLikeWhoa>)
|
|
* @version 2.0.0
|
|
* @license MIT
|
|
* @see <http://radlikewhoa.github.io/Countable/>
|
|
*/
|
|
|
|
/**
|
|
* Note: For the purpose of this internal documentation, arguments of the type
|
|
* {Nodes} are to be interpreted as either {NodeList} or {Element}.
|
|
*/
|
|
|
|
;(function (global) {
|
|
'use strict'
|
|
|
|
/**
|
|
* @private
|
|
*
|
|
* `_liveElements` holds all elements that have the live-counting
|
|
* functionality bound to them.
|
|
*
|
|
* `_event` holds the event to handle the live counting, based on the
|
|
* browser's capabilities.
|
|
*/
|
|
|
|
var _liveElements = [],
|
|
_event = 'oninput' in document ? 'input' : 'keyup'
|
|
|
|
/**
|
|
* `String.trim()` polyfill for non-supporting browsers. This is the
|
|
* recommended polyfill on MDN.
|
|
*
|
|
* @see <http://goo.gl/uYveB>
|
|
* @see <http://goo.gl/xjIxJ>
|
|
*
|
|
* @return {String} The original string with leading and trailing whitespace
|
|
* removed.
|
|
*/
|
|
|
|
if (!String.prototype.trim) {
|
|
String.prototype.trim = function () {
|
|
return this.replace(/^\s+|\s+$/g, '')
|
|
}
|
|
}
|
|
|
|
/**
|
|
* `ucs2decode` function from the punycode.js library.
|
|
*
|
|
* Creates an array containing the decimal code points of each Unicode
|
|
* character in the string. While JavaScript uses UCS-2 internally, this
|
|
* function will convert a pair of surrogate halves (each of which UCS-2
|
|
* exposes as separate characters) into a single code point, matching
|
|
* UTF-16.
|
|
*
|
|
* @see <http://goo.gl/8M09r>
|
|
* @see <http://goo.gl/u4UUC>
|
|
*
|
|
* @param {String} string The Unicode input string (UCS-2).
|
|
*
|
|
* @return {Array} The new array of code points.
|
|
*/
|
|
|
|
function _decode (string) {
|
|
var output = [],
|
|
counter = 0,
|
|
length = string.length,
|
|
value, extra
|
|
|
|
while (counter < length) {
|
|
value = string.charCodeAt(counter++)
|
|
|
|
if ((value & 0xF800) == 0xD800 && counter < length) {
|
|
|
|
// High surrogate, and there is a next character.
|
|
|
|
extra = string.charCodeAt(counter++)
|
|
|
|
if ((extra & 0xFC00) == 0xDC00) {
|
|
|
|
// Low surrogate.
|
|
|
|
output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000)
|
|
} else {
|
|
output.push(value, extra)
|
|
}
|
|
} else {
|
|
output.push(value)
|
|
}
|
|
}
|
|
|
|
return output
|
|
}
|
|
|
|
/**
|
|
* `_validateArguments` validates the arguments given to each function call.
|
|
* Errors are logged to the console as warnings, but Countable fails silently.
|
|
*
|
|
* @private
|
|
*
|
|
* @param {Nodes} elements The (collection of) element(s) to
|
|
* validate.
|
|
*
|
|
* @param {Function} callback The callback function to validate.
|
|
*
|
|
* @return {Boolean} Returns whether all arguments are vaild.
|
|
*/
|
|
|
|
function _validateArguments (elements, callback) {
|
|
var elementsValid = elements && ((Object.prototype.toString.call(elements) === '[object NodeList]' && elements.length) || (elements.nodeType === 1)),
|
|
callbackValid = callback && typeof callback === 'function'
|
|
|
|
if ('console' in window && 'warn' in console) {
|
|
if (!elementsValid) console.warn('Countable: No valid elements were found')
|
|
if (!callbackValid) console.warn('Countable: "' + callback + '" is not a valid callback function')
|
|
}
|
|
|
|
return elementsValid && callbackValid
|
|
}
|
|
|
|
/**
|
|
* `_extendDefaults` is a function to extend a set of default options with the
|
|
* ones given in the function call. Available options are described below.
|
|
*
|
|
* {Boolean} hardReturns Use two returns to seperate a paragraph instead of
|
|
* one.
|
|
* {Boolean} stripTags Strip HTML tags before counting the values.
|
|
*
|
|
* @private
|
|
*
|
|
* @param {Object} options Countable allows the options described above.
|
|
* They can be used in a function call to override
|
|
* the default behaviour.
|
|
*
|
|
* @return {Object} The new options object.
|
|
*/
|
|
|
|
function _extendDefaults (options) {
|
|
var defaults = { hardReturns: false, stripTags: false }
|
|
|
|
for (var prop in options) {
|
|
if (defaults.hasOwnProperty(prop)) defaults[prop] = options[prop]
|
|
}
|
|
|
|
return defaults
|
|
}
|
|
|
|
/**
|
|
* `_count` trims an element's value, optionally strips HTML tags and counts
|
|
* paragraphs, words, characters and characters plus spaces.
|
|
*
|
|
* @private
|
|
*
|
|
* @param {Element} element The element whose value is to be counted.
|
|
*
|
|
* @param {Object} options The options to use for the counting.
|
|
*
|
|
* @return {Object} The object containing the number of paragraphs,
|
|
* words, characters and characters plus spaces.
|
|
*/
|
|
|
|
function _count (element, options) {
|
|
var original = 'value' in element ? element.value : element.innerText || element.textContent,
|
|
temp, trimmed
|
|
|
|
/**
|
|
* The initial implementation to allow for HTML tags stripping was created
|
|
* @craniumslows while the current one was created by @Rob--W.
|
|
*
|
|
* @see <http://goo.gl/Exmlr>
|
|
* @see <http://goo.gl/gFQQh>
|
|
*/
|
|
|
|
if (options.stripTags) original = original.replace(/<\/?[a-z][^>]*>/gi, '')
|
|
|
|
trimmed = original.trim()
|
|
|
|
/**
|
|
* Most of the performance improvements are based on the works of @epmatsw.
|
|
*
|
|
* @see <http://goo.gl/SWOLB>
|
|
*/
|
|
|
|
return {
|
|
paragraphs: trimmed ? (trimmed.match(options.hardReturns ? /\n{2,}/g : /\n+/g) || []).length + 1 : 0,
|
|
words: trimmed ? (trimmed.replace(/['";:,.?¿\-!¡]+/g, '').match(/\S+/g) || []).length : 0,
|
|
characters: trimmed ? _decode(trimmed.replace(/\s/g, '')).length : 0,
|
|
all: _decode(original.replace(/[\n\r]/g, '')).length
|
|
}
|
|
}
|
|
|
|
/**
|
|
* `_loop` is a helper function to iterate over a collection, e.g. a NodeList
|
|
* or an Array. The callback receives the current element as the single
|
|
* parameter.
|
|
*
|
|
* @private
|
|
*
|
|
* @param {Array} which The collection to iterate over.
|
|
*
|
|
* @param {Function} callback The callback function to call on each
|
|
* iteration.
|
|
*/
|
|
|
|
function _loop (which, callback) {
|
|
var len = which.length
|
|
|
|
if (typeof len !== 'undefined') {
|
|
while (len--) {
|
|
callback(which[len])
|
|
}
|
|
} else {
|
|
callback(which)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is the main object that will later be exposed to other scripts. It
|
|
* holds all the public methods that can be used to enable the Countable
|
|
* functionality.
|
|
*/
|
|
|
|
var Countable = {
|
|
|
|
/**
|
|
* The `live` method binds the counting handler to all given elements. The
|
|
* event is either `oninput` or `onkeydown`, based on the capabilities of
|
|
* the browser.
|
|
*
|
|
* @param {Nodes} elements All elements that should receive the
|
|
* Countable functionality.
|
|
*
|
|
* @param {Function} callback The callback to fire whenever the
|
|
* element's value changes. The callback is
|
|
* called with the relevant element bound to
|
|
* `this` and the counted values as the
|
|
* single parameter.
|
|
*
|
|
* @param {Object} [options] An object to modify Countable's
|
|
* behaviour. Refer to `_extendDefaults` for
|
|
* a list of available options.
|
|
*
|
|
* @return {Object} Returns the Countable object to allow for chaining.
|
|
*/
|
|
|
|
live: function (elements, callback, options) {
|
|
var ops = _extendDefaults(options),
|
|
bind = function (element) {
|
|
var handler = function () {
|
|
callback.call(element, _count(element, ops))
|
|
}
|
|
|
|
_liveElements.push({ element: element, handler: handler })
|
|
|
|
handler()
|
|
|
|
if (element.addEventListener) {
|
|
element.addEventListener(_event, handler, false)
|
|
} else if (element.attachEvent) {
|
|
element.attachEvent('on' + _event, handler)
|
|
}
|
|
}
|
|
|
|
if (!_validateArguments(elements, callback)) return
|
|
|
|
if (elements.length) {
|
|
_loop(elements, bind)
|
|
} else {
|
|
bind(elements)
|
|
}
|
|
|
|
return this
|
|
},
|
|
|
|
/**
|
|
* The `die` method removes the Countable functionality from all given
|
|
* elements.
|
|
*
|
|
* @param {Nodes} elements All elements whose Countable functionality
|
|
* should be unbound.
|
|
*
|
|
* @return {Object} Returns the Countable object to allow for chaining.
|
|
*/
|
|
|
|
die: function (elements) {
|
|
if (!_validateArguments(elements, function () {})) return
|
|
|
|
_loop(elements, function (element) {
|
|
var liveElement
|
|
|
|
_loop(_liveElements, function (live) {
|
|
if (live.element === element) liveElement = live
|
|
})
|
|
|
|
if (!liveElement) return
|
|
|
|
if (element.removeEventListener) {
|
|
element.removeEventListener(_event, liveElement.handler, false)
|
|
} else if (element.detachEvent) {
|
|
element.detachEvent('on' + _event, liveElement.handler)
|
|
}
|
|
|
|
_liveElements.splice(_liveElements.indexOf(liveElement), 1)
|
|
})
|
|
|
|
return this
|
|
},
|
|
|
|
/**
|
|
* The `once` method works mostly like the `live` method, but no events are
|
|
* bound, the functionality is only executed once.
|
|
*
|
|
* @param {Nodes} elements All elements that should receive the
|
|
* Countable functionality.
|
|
*
|
|
* @param {Function} callback The callback to fire whenever the
|
|
* element's value changes. The callback is
|
|
* called with the relevant element bound to
|
|
* `this` and the counted values as the
|
|
* single parameter.
|
|
*
|
|
* @param {Object} [options] An object to modify Countable's
|
|
* behaviour. Refer to `_extendDefaults`
|
|
* for a list of available options.
|
|
*
|
|
* @return {Object} Returns the Countable object to allow for chaining.
|
|
*/
|
|
|
|
once: function (elements, callback, options) {
|
|
if (!_validateArguments(elements, callback)) return
|
|
|
|
_loop(elements, function (element) {
|
|
callback.call(element, _count(element, _extendDefaults(options)))
|
|
})
|
|
|
|
return this
|
|
},
|
|
|
|
/**
|
|
* The `enabled` method checks if the live-counting functionality is bound
|
|
* to an element.
|
|
*
|
|
* @param {Element} element A single Element.
|
|
*
|
|
* @return {Boolean} A boolean value representing whether Countable
|
|
* functionality is bound to the given element.
|
|
*/
|
|
|
|
enabled: function (element) {
|
|
var isEnabled = false
|
|
|
|
if (element && element.nodeType === 1) {
|
|
_loop(_liveElements, function (live) {
|
|
if (live.element === element) isEnabled = true
|
|
})
|
|
}
|
|
|
|
return isEnabled
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Expose Countable depending on the module system used across the
|
|
* application. (Node / CommonJS, AMD, global)
|
|
*/
|
|
|
|
if (typeof exports === 'object') {
|
|
module.exports = Countable
|
|
} else if (typeof define === 'function' && define.amd) {
|
|
define(function () { return Countable })
|
|
} else {
|
|
global.Countable = Countable
|
|
}
|
|
}(this)) |