Issues in always.js (master) - Issues in master - TonyBogdanov/jquery-always - Measure and Improve Code Quality continuously with Scrutinizer

Issues (1)

always.js (1 issue)

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Unused Code 1

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Minor 1

(function (jQuery) {
'use strict';

jQuery = jQuery && jQuery.hasOwnProperty('default') ? jQuery['default'] : jQuery;

var AlwaysData = /** @class */ (function () {
    function AlwaysData() {
        this.instance = null;
        this.lastOperation = null;
    }
    AlwaysData.OPERATION_INSERTION = 0;
    AlwaysData.OPERATION_REMOVAL = 1;
    return AlwaysData;
}());

var Always = /** @class */ (function () {
    /**
     * Constructor.
     *
     * @param {HTMLElement} element
     */
    function Always(element) {
        var _this = this;
        this.insertedCallbacks = {};
        this.removedCallbacks = {};
        this.element = element;
        this.observer = new MutationObserver(function (mutations) { return mutations.forEach(function (mutation) {
            if ('childList' !== mutation.type) {
                return;
            }
            // NodeList does not support forEach directly due to a bug in Google Chrome
            [].forEach.call(mutation.addedNodes, function (node) {
                if (!(node instanceof HTMLElement)) {
                    return;
                }
                _this.notifyInserted(node);
            });
            [].forEach.call(mutation.removedNodes, function (node) {
                if (!(node instanceof HTMLElement)) {
                    return;
                }
                _this.notifyRemoved(node);
            });
        }); });
        this.observer.observe(this.element, {
            childList: true,
            subtree: true
        });
    }
    /**
     * Retrieve a jQuery Always specific data object assigned to the specified element, or create one if it does
     * not already exist.
     *
     * @param {HTMLElement} element
     * @returns {AlwaysData}
     */
    Always.data = function (element) {
        if (!element.hasOwnProperty('jQueryAlways')) {
            Object.defineProperty(element, 'jQueryAlways', {
                value: new AlwaysData(),
                configurable: true
            });
        }
        return element.jQueryAlways;
    };
    /**
     * Attaches a new Always instance to the specified element and returns it, or returns a previously attached
     * instance.
     *
     * @param {HTMLElement} element
     * @returns {Always}
     */
    Always.attach = function (element) {
        var data = this.data(element);
        if (!data.instance) {
            data.instance = new Always(element);
        }
        return data.instance;
    };
    /**
     * Detaches a previously attached Always instance from the specified element & also removes the mutation
     * observer.
     *
     * @param {HTMLElement} element
     */
    Always.detach = function (element) {
        Always.attach(element).observer.disconnect();
        delete element.jQueryAlways;
    };
    /**
     * Normalizes similar selectors.
     * E.g. "a, b" and "b,a" are the same thing, both will be normalized to "a,b".
     *
     * @param {string} selector
     * @returns {string}
     */
    Always.normalizeSelector = function (selector) {
        return selector.split(',').map(function (part) {
            return part.trim();
        }).sort().join(',');
    };
    /**
     * Attaches the specified inserted / removed listeners for elements matching the specified selector on the
     * specified parent element.
     *
     * @param {HTMLElement} element
     * @param {string} selector
     * @param {() => void} onInserted
     * @param {() => void} onRemoved
     */
    Always.always = function (element, selector, onInserted, onRemoved) {
        var instance = Always.attach(element);
        // register inserted callbacks
        if ('function' === typeof onInserted) {
            instance.addInsertedCallback(selector, onInserted);
            // invoke the inserted callback on all matching elements already in the dom
            // this invocation is always forced even if the element's last operation was an insertion
            // we still need to mark the element, though, to avoid future duplicate notifies
            [].forEach.call(element.querySelectorAll(selector), function (node) {
                Always.data(node).lastOperation = AlwaysData.OPERATION_INSERTION;
                onInserted.call(node);
            });
        }
        // register removed callbacks
        if ('function' === typeof onRemoved) {
            instance.addRemovedCallback(selector, onRemoved);
        }
    };
    /**
     * Detaches the specified inserted / removed listener(s) for elements matching the specified selector on the
     * specified element as parent.
     *
     * @param {HTMLElement} element
     * @param {string} selector
     * @param {() => void} onInserted
     * @param {() => void} onRemoved
     */
    Always.never = function (element, selector, onInserted, onRemoved) {
        // if no selector is specified, quickest way to remove all listeners is to just detach
        if (!selector) {
            Always.detach(element);
            return;
        }
        var instance = Always.attach(element);
        // if no specific callback is requested, remove all listeners that match the selector
        if (!onInserted && !onRemoved) {
            instance.removeInsertedCallback(selector);
            instance.removeRemovedCallback(selector);
            return;
        }
        // remove only specific listeners
        if (onInserted) {
            instance.removeInsertedCallback(selector, onInserted);
        }
        if (onRemoved) {
            instance.removeRemovedCallback(selector, onRemoved);
        }
    };
    /**
     * Adds a new callback for the specified selector.
     *
     * @param {{[p: string]: (() => void)[]}} callbacks
     * @param {string} selector
     * @param {() => void} callback
     * @returns {Always}
     */
    Always.prototype.addCallback = function (callbacks, selector, callback) {
        selector = Always.normalizeSelector(selector);
        if (!callbacks.hasOwnProperty(selector)) {
            callbacks[selector] = [];
        }
        callbacks[selector].push(callback);
        return this;
    };
    /**
     * Removes the specified callback for the specified selector.
     * If no callback is specified, removes all callbacks for the selector.
     *
     * @param {{[p: string]: (() => void)[]}} callbacks
     * @param {string} selector
     * @param {() => void} callback
     * @returns {Always}
     */
    Always.prototype.removeCallback = function (callbacks, selector, callback) {
        selector = Always.normalizeSelector(selector);
        if (!callbacks.hasOwnProperty(selector)) {
            return this;
        }
        if (callback) {
            for (var index = -1; -1 < (index = callbacks[selector].indexOf(callback));) {

                callbacks[selector].splice(index, 1);
            }
        }
        else {
            delete callbacks[selector];
        }
        return this;
    };
    /**
     * Notifies the specified callbacks for the specified operation on the specified element.
     * This is a convenience method for notifyInserted and notifyRemoved.
     *
     * @param {HTMLElement} element
     * @param {{[p: string]: (() => void)[]}} callbacks
     * @param {number} operation
     * @returns {Always}
     */
    Always.prototype.notifyCallbacks = function (element, callbacks, operation) {
        // make the element manageable & prevent duplicate invocations
        // even making every single node in the Dom manageable is still much faster that matching it against a selector
        var data = Always.data(element);
        if (operation === data.lastOperation) {
            return this;
        }
        data.lastOperation = operation;
        // traverse requested callbacks & invoke those for which the element matches the corresponding selector
        Object.keys(callbacks).forEach(function (selector) {
            if (element.matches(selector)) {
                callbacks[selector].forEach(function (callback) {
                    callback.call(element);
                });
            }
        });
        return this;
    };
    /**
     * Notifies all registered callbacks about an insertion, if the corresponding selector matches the node.
     *
     * @param {HTMLElement} element
     * @returns {Always}
     */
    Always.prototype.notifyInserted = function (element) {
        // callbacks for insertions are invoked for parents first
        this.notifyCallbacks(element, this.insertedCallbacks, AlwaysData.OPERATION_INSERTION);
        // we need to manually cascade notify all child nodes as the observer won't do it automatically
        if (element.children) {
            for (var _i = 0, _a = element.children; _i < _a.length; _i++) {
                var node = _a[_i];
                this.notifyInserted(node);
            }
        }
        return this;
    };
    /**
     * Notifies all registered callbacks about a removal, if the corresponding selector matches the node.
     *
     * @param {HTMLElement} element
     * @returns {Always}
     */
    Always.prototype.notifyRemoved = function (element) {
        // we need to manually cascade notify all child nodes as the observer won't do it automatically
        if (element.children) {
            for (var _i = 0, _a = element.children; _i < _a.length; _i++) {
                var node = _a[_i];
                this.notifyRemoved(node);
            }
        }
        // callbacks for removals are invoked for deepest children first
        this.notifyCallbacks(element, this.removedCallbacks, AlwaysData.OPERATION_REMOVAL);
        return this;
    };
    /**
     * Adds a new inserted callback for the specified selector.
     *
     * @param {string} selector
     * @param {() => void} callback
     * @returns {Always}
     */
    Always.prototype.addInsertedCallback = function (selector, callback) {
        return this.addCallback(this.insertedCallbacks, selector, callback);
    };
    /**
     * Adds a new removed callback for the specified selector.
     *
     * @param {string} selector
     * @param {() => void} callback
     * @returns {Always}
     */
    Always.prototype.addRemovedCallback = function (selector, callback) {
        return this.addCallback(this.removedCallbacks, selector, callback);
    };
    /**
     * Removes the specified inserted callback for the specified selector.
     * If no callback is specified, removes all callbacks for the selector.
     *
     * @param {string} selector
     * @param {() => void} callback
     * @returns {Always}
     */
    Always.prototype.removeInsertedCallback = function (selector, callback) {
        return this.removeCallback(this.insertedCallbacks, selector, callback);
    };
    /**
     * Removes the specified removed callback for the specified selector.
     * If no callback is specified, removes all callbacks for the selector.
     *
     * @param {string} selector
     * @param {() => void} callback
     * @returns {Always}
     */
    Always.prototype.removeRemovedCallback = function (selector, callback) {
        return this.removeCallback(this.removedCallbacks, selector, callback);
    };
    return Always;
}());

function bindingNative() {
    window.Always = {
        always: Always.always,
        never: Always.never
    };
}

function bindingJQuery() {
    if ('undefined' === typeof jQuery) {
        return;
    }
    (function ($) {
        $.extend($.fn, {
            always: function (selector, onInserted, onRemoved) {
                return $(this).each(function () {
                    Always.always(this, selector, onInserted, onRemoved);
                });
            },
            never: function (selector, onInserted, onRemoved) {
                return $(this).each(function () {
                    Always.never(this, selector, onInserted, onRemoved);
                });
            }
        });
    })(jQuery);
}

var Bindings = /** @class */ (function () {
    function Bindings() {
    }
    Bindings.native = bindingNative;
    Bindings.jQuery = bindingJQuery;
    return Bindings;
}());

function polyfillMutationObserver() {
    if (window.MutationObserver) {
        return;
    }
    window.MutationObserver = window.WebKitMutationObserver;
}

function polyfillElementMatches() {
    var _this = this;
    var prototype = Element.prototype;
    if (prototype.matches) {
        return;
    }
    prototype.matches =
        prototype.matchesSelector ||
            prototype.mozMatchesSelector ||
            prototype.msMatchesSelector ||
            prototype.oMatchesSelector ||
            prototype.webkitMatchesSelector ||
            (function (s) {
                var matches = (_this.document || _this.ownerDocument).querySelectorAll(s);
                for (var i = 0; i < matches.length; i++) {
                    if (matches.item(i) === _this) {
                        return true;
                    }
                }
                return false;
            });
}

var Polyfills = /** @class */ (function () {
    function Polyfills() {
    }
    Polyfills.elementMatches = polyfillElementMatches;
    Polyfills.mutationObserver = polyfillMutationObserver;
    return Polyfills;
}());

/** global: Element */
/** global: HTMLElement */
/** global: MutationObserver */
/** global: WebKitMutationObserver */
// polyfills
Polyfills.elementMatches();
Polyfills.mutationObserver();
// bindings
Bindings.native();
Bindings.jQuery();

}(jQuery));


1			(function (jQuery) {
2			'use strict';
3
4			jQuery = jQuery && jQuery.hasOwnProperty('default') ? jQuery['default'] : jQuery;
5
6			var AlwaysData = /** @class */ (function () {
7			function AlwaysData() {
8			this.instance = null;
9			this.lastOperation = null;
10			}
11			AlwaysData.OPERATION_INSERTION = 0;
12			AlwaysData.OPERATION_REMOVAL = 1;
13			return AlwaysData;
14			}());
15
16			var Always = /** @class */ (function () {
17			/**
18			* Constructor.
19			*
20			* @param {HTMLElement} element
21			*/
22			function Always(element) {
23			var _this = this;
24			this.insertedCallbacks = {};
25			this.removedCallbacks = {};
26			this.element = element;
27			this.observer = new MutationObserver(function (mutations) { return mutations.forEach(function (mutation) {
28			if ('childList' !== mutation.type) {
29			return;
30			}
31			// NodeList does not support forEach directly due to a bug in Google Chrome
32			[].forEach.call(mutation.addedNodes, function (node) {
33			if (!(node instanceof HTMLElement)) {
34			return;
35			}
36			_this.notifyInserted(node);
37			});
38			[].forEach.call(mutation.removedNodes, function (node) {
39			if (!(node instanceof HTMLElement)) {
40			return;
41			}
42			_this.notifyRemoved(node);
43			});
44			}); });
45			this.observer.observe(this.element, {
46			childList: true,
47			subtree: true
48			});
49			}
50			/**
51			* Retrieve a jQuery Always specific data object assigned to the specified element, or create one if it does
52			* not already exist.
53			*
54			* @param {HTMLElement} element
55			* @returns {AlwaysData}
56			*/
57			Always.data = function (element) {
58			if (!element.hasOwnProperty('jQueryAlways')) {
59			Object.defineProperty(element, 'jQueryAlways', {
60			value: new AlwaysData(),
61			configurable: true
62			});
63			}
64			return element.jQueryAlways;
65			};
66			/**
67			* Attaches a new Always instance to the specified element and returns it, or returns a previously attached
68			* instance.
69			*
70			* @param {HTMLElement} element
71			* @returns {Always}
72			*/
73			Always.attach = function (element) {
74			var data = this.data(element);
75			if (!data.instance) {
76			data.instance = new Always(element);
77			}
78			return data.instance;
79			};
80			/**
81			* Detaches a previously attached Always instance from the specified element & also removes the mutation
82			* observer.
83			*
84			* @param {HTMLElement} element
85			*/
86			Always.detach = function (element) {
87			Always.attach(element).observer.disconnect();
88			delete element.jQueryAlways;
89			};
90			/**
91			* Normalizes similar selectors.
92			* E.g. "a, b" and "b,a" are the same thing, both will be normalized to "a,b".
93			*
94			* @param {string} selector
95			* @returns {string}
96			*/
97			Always.normalizeSelector = function (selector) {
98			return selector.split(',').map(function (part) {
99			return part.trim();
100			}).sort().join(',');
101			};
102			/**
103			* Attaches the specified inserted / removed listeners for elements matching the specified selector on the
104			* specified parent element.
105			*
106			* @param {HTMLElement} element
107			* @param {string} selector
108			* @param {() => void} onInserted
109			* @param {() => void} onRemoved
110			*/
111			Always.always = function (element, selector, onInserted, onRemoved) {
112			var instance = Always.attach(element);
113			// register inserted callbacks
114			if ('function' === typeof onInserted) {
115			instance.addInsertedCallback(selector, onInserted);
116			// invoke the inserted callback on all matching elements already in the dom
117			// this invocation is always forced even if the element's last operation was an insertion
118			// we still need to mark the element, though, to avoid future duplicate notifies
119			[].forEach.call(element.querySelectorAll(selector), function (node) {
120			Always.data(node).lastOperation = AlwaysData.OPERATION_INSERTION;
121			onInserted.call(node);
122			});
123			}
124			// register removed callbacks
125			if ('function' === typeof onRemoved) {
126			instance.addRemovedCallback(selector, onRemoved);
127			}
128			};
129			/**
130			* Detaches the specified inserted / removed listener(s) for elements matching the specified selector on the
131			* specified element as parent.
132			*
133			* @param {HTMLElement} element
134			* @param {string} selector
135			* @param {() => void} onInserted
136			* @param {() => void} onRemoved
137			*/
138			Always.never = function (element, selector, onInserted, onRemoved) {
139			// if no selector is specified, quickest way to remove all listeners is to just detach
140			if (!selector) {
141			Always.detach(element);
142			return;
143			}
144			var instance = Always.attach(element);
145			// if no specific callback is requested, remove all listeners that match the selector
146			if (!onInserted && !onRemoved) {
147			instance.removeInsertedCallback(selector);
148			instance.removeRemovedCallback(selector);
149			return;
150			}
151			// remove only specific listeners
152			if (onInserted) {
153			instance.removeInsertedCallback(selector, onInserted);
154			}
155			if (onRemoved) {
156			instance.removeRemovedCallback(selector, onRemoved);
157			}
158			};
159			/**
160			* Adds a new callback for the specified selector.
161			*
162			* @param {{[p: string]: (() => void)[]}} callbacks
163			* @param {string} selector
164			* @param {() => void} callback
165			* @returns {Always}
166			*/
167			Always.prototype.addCallback = function (callbacks, selector, callback) {
168			selector = Always.normalizeSelector(selector);
169			if (!callbacks.hasOwnProperty(selector)) {
170			callbacks[selector] = [];
171			}
172			callbacks[selector].push(callback);
173			return this;
174			};
175			/**
176			* Removes the specified callback for the specified selector.
177			* If no callback is specified, removes all callbacks for the selector.
178			*
179			* @param {{[p: string]: (() => void)[]}} callbacks
180			* @param {string} selector
181			* @param {() => void} callback
182			* @returns {Always}
183			*/
184			Always.prototype.removeCallback = function (callbacks, selector, callback) {
185			selector = Always.normalizeSelector(selector);
186			if (!callbacks.hasOwnProperty(selector)) {
187			return this;
188			}
189			if (callback) {
190			for (var index = -1; -1 < (index = callbacks[selector].indexOf(callback));) {
			0 ignored issues – show Unused Code introduced 2018-01-26 12:55 UTC by Report Bug Copy Issue Report Show Similar Issues like this The assignment to variable `index` seems to be never used. Consider removing it. Loading history...
191			callbacks[selector].splice(index, 1);
192			}
193			}
194			else {
195			delete callbacks[selector];
196			}
197			return this;
198			};
199			/**
200			* Notifies the specified callbacks for the specified operation on the specified element.
201			* This is a convenience method for notifyInserted and notifyRemoved.
202			*
203			* @param {HTMLElement} element
204			* @param {{[p: string]: (() => void)[]}} callbacks
205			* @param {number} operation
206			* @returns {Always}
207			*/
208			Always.prototype.notifyCallbacks = function (element, callbacks, operation) {
209			// make the element manageable & prevent duplicate invocations
210			// even making every single node in the Dom manageable is still much faster that matching it against a selector
211			var data = Always.data(element);
212			if (operation === data.lastOperation) {
213			return this;
214			}
215			data.lastOperation = operation;
216			// traverse requested callbacks & invoke those for which the element matches the corresponding selector
217			Object.keys(callbacks).forEach(function (selector) {
218			if (element.matches(selector)) {
219			callbacks[selector].forEach(function (callback) {
220			callback.call(element);
221			});
222			}
223			});
224			return this;
225			};
226			/**
227			* Notifies all registered callbacks about an insertion, if the corresponding selector matches the node.
228			*
229			* @param {HTMLElement} element
230			* @returns {Always}
231			*/
232			Always.prototype.notifyInserted = function (element) {
233			// callbacks for insertions are invoked for parents first
234			this.notifyCallbacks(element, this.insertedCallbacks, AlwaysData.OPERATION_INSERTION);
235			// we need to manually cascade notify all child nodes as the observer won't do it automatically
236			if (element.children) {
237			for (var _i = 0, _a = element.children; _i < _a.length; _i++) {
238			var node = _a[_i];
239			this.notifyInserted(node);
240			}
241			}
242			return this;
243			};
244			/**
245			* Notifies all registered callbacks about a removal, if the corresponding selector matches the node.
246			*
247			* @param {HTMLElement} element
248			* @returns {Always}
249			*/
250			Always.prototype.notifyRemoved = function (element) {
251			// we need to manually cascade notify all child nodes as the observer won't do it automatically
252			if (element.children) {
253			for (var _i = 0, _a = element.children; _i < _a.length; _i++) {
254			var node = _a[_i];
255			this.notifyRemoved(node);
256			}
257			}
258			// callbacks for removals are invoked for deepest children first
259			this.notifyCallbacks(element, this.removedCallbacks, AlwaysData.OPERATION_REMOVAL);
260			return this;
261			};
262			/**
263			* Adds a new inserted callback for the specified selector.
264			*
265			* @param {string} selector
266			* @param {() => void} callback
267			* @returns {Always}
268			*/
269			Always.prototype.addInsertedCallback = function (selector, callback) {
270			return this.addCallback(this.insertedCallbacks, selector, callback);
271			};
272			/**
273			* Adds a new removed callback for the specified selector.
274			*
275			* @param {string} selector
276			* @param {() => void} callback
277			* @returns {Always}
278			*/
279			Always.prototype.addRemovedCallback = function (selector, callback) {
280			return this.addCallback(this.removedCallbacks, selector, callback);
281			};
282			/**
283			* Removes the specified inserted callback for the specified selector.
284			* If no callback is specified, removes all callbacks for the selector.
285			*
286			* @param {string} selector
287			* @param {() => void} callback
288			* @returns {Always}
289			*/
290			Always.prototype.removeInsertedCallback = function (selector, callback) {
291			return this.removeCallback(this.insertedCallbacks, selector, callback);
292			};
293			/**
294			* Removes the specified removed callback for the specified selector.
295			* If no callback is specified, removes all callbacks for the selector.
296			*
297			* @param {string} selector
298			* @param {() => void} callback
299			* @returns {Always}
300			*/
301			Always.prototype.removeRemovedCallback = function (selector, callback) {
302			return this.removeCallback(this.removedCallbacks, selector, callback);
303			};
304			return Always;
305			}());
306
307			function bindingNative() {
308			window.Always = {
309			always: Always.always,
310			never: Always.never
311			};
312			}
313
314			function bindingJQuery() {
315			if ('undefined' === typeof jQuery) {
316			return;
317			}
318			(function ($) {
319			$.extend($.fn, {
320			always: function (selector, onInserted, onRemoved) {
321			return $(this).each(function () {
322			Always.always(this, selector, onInserted, onRemoved);
323			});
324			},
325			never: function (selector, onInserted, onRemoved) {
326			return $(this).each(function () {
327			Always.never(this, selector, onInserted, onRemoved);
328			});
329			}
330			});
331			})(jQuery);
332			}
333
334			var Bindings = /** @class */ (function () {
335			function Bindings() {
336			}
337			Bindings.native = bindingNative;
338			Bindings.jQuery = bindingJQuery;
339			return Bindings;
340			}());
341
342			function polyfillMutationObserver() {
343			if (window.MutationObserver) {
344			return;
345			}
346			window.MutationObserver = window.WebKitMutationObserver;
347			}
348
349			function polyfillElementMatches() {
350			var _this = this;
351			var prototype = Element.prototype;
352			if (prototype.matches) {
353			return;
354			}
355			prototype.matches =
356			prototype.matchesSelector \|\|
357			prototype.mozMatchesSelector \|\|
358			prototype.msMatchesSelector \|\|
359			prototype.oMatchesSelector \|\|
360			prototype.webkitMatchesSelector \|\|
361			(function (s) {
362			var matches = (_this.document \|\| _this.ownerDocument).querySelectorAll(s);
363			for (var i = 0; i < matches.length; i++) {
364			if (matches.item(i) === _this) {
365			return true;
366			}
367			}
368			return false;
369			});
370			}
371
372			var Polyfills = /** @class */ (function () {
373			function Polyfills() {
374			}
375			Polyfills.elementMatches = polyfillElementMatches;
376			Polyfills.mutationObserver = polyfillMutationObserver;
377			return Polyfills;
378			}());
379
380			/** global: Element */
381			/** global: HTMLElement */
382			/** global: MutationObserver */
383			/** global: WebKitMutationObserver */
384			// polyfills
385			Polyfills.elementMatches();
386			Polyfills.mutationObserver();
387			// bindings
388			Bindings.native();
389			Bindings.jQuery();
390
391			}(jQuery));
392

TonyBogdanov / jquery-always

Issues (1)

always.js (1 issue)

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