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UtilLibrary

Util function library

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/405927/1026554/UtilLibrary.js 

// ==UserScript==
// ==UserLibrary==
// @name         UtilLibrary
// @namespace    sami@kankaristo.fi
// @version      0.7.3
// @description  Util function library
// @author       sami@kankaristo.fi
// @license      MIT
// @exclude      *
// @match        *://*/*
// @grant        GM_openInTab
// ==/UserLibrary==
// ==/UserScript==


// LIBRARY: START
const Util = (() => {
var exports = {};


exports.LOGGING_ID = "";

exports.LOGGING_LEVELS = [
    "DEBUG",
    "INFO",
    "NOTE",
    "WARN",
    "ERROR"
];

exports.MINIMUM_LOGGING_LEVEL = exports.LOGGING_LEVELS.findIndex(
    (element) => (element == "NOTE")
);

exports.SetMinimumLoggingLevel = (minimumLevel) => {
    exports.MINIMUM_LOGGING_LEVEL = exports.LOGGING_LEVELS.findIndex(
        (element) => (element == minimumLevel)
    );
};

exports.LOG_MESSAGES_WITHOUT_LOGGING_LEVEL = true;


///
/// Log a message.
///
exports.Log = (...args) => {
    var loggingLevelIndex = exports.LOGGING_LEVELS.findIndex(
        (element) => (element == args[0])
    );
    
    if (loggingLevelIndex != -1) {
        if (loggingLevelIndex < exports.MINIMUM_LOGGING_LEVEL) {
            return;
        }
        
        //args = args.slice(1);
    }
    else if (!exports.LOG_MESSAGES_WITHOUT_LOGGING_LEVEL) {
        // Don't log messages without a logging level
        return;
    }
    
    console.log.apply(
        null,
        [
            (new Date()).toISOString()
            + " " + exports.LOGGING_ID + ":\n"
        ].concat(args)
    );
};


///
/// Log a message (warn).
///
exports.Warn = (...args) => {
    var loggingLevelIndex = exports.LOGGING_LEVELS.findIndex(
        (element) => (element == args[0])
    );
    
    if (loggingLevelIndex != -1) {
        if (loggingLevelIndex < exports.MINIMUM_LOGGING_LEVEL) {
            return;
        }
        
        //args = args.slice(1);
    }
    else if (!exports.LOG_MESSAGES_WITHOUT_LOGGING_LEVEL) {
        // Don't log messages without a logging level
        return;
    }
    
    console.warn.apply(
        null,
        [
            (new Date()).toISOString()
            + " " + exports.LOGGING_ID + ":\n"
        ].concat(args)
    );
};


///
/// Log a message (error).
///
exports.Error = (...args) => {
    var loggingLevelIndex = exports.LOGGING_LEVELS.findIndex(
        (element) => (element == args[0])
    );
    
    if (loggingLevelIndex != -1) {
        if (loggingLevelIndex < exports.MINIMUM_LOGGING_LEVEL) {
            return;
        }
        
        //args = args.slice(1);
    }
    else if (!exports.LOG_MESSAGES_WITHOUT_LOGGING_LEVEL) {
        // Don't log messages without a logging level
        return;
    }
    
    console.error.apply(
        null,
        [
            (new Date()).toISOString()
            + " " + exports.LOGGING_ID + ":\n"
        ].concat(args)
    );
};


///
/// Create a click event.
///
/// NOTE: initEvent() is deprecated, so this will stop working at some point.
///
exports.CreateClickEvent = () => {
    var clickEvent = document.createEvent("Events");
    clickEvent.initEvent("click", true, false);
    
    return clickEvent;
};


///
/// Create a CSS element.
///
exports.CreateCssElement = (css) => {
    exports.Log("CreateCssElement()");
    
    var style = document.createElement("style");
    style.classList.add("custom-css");
    style.innerHTML = css;
    var body = document.getElementsByTagName("body")[0];
    if (body != null) {
        body.append(style);
    }
};


///
/// Get the value of an attibute, or return a default value.
///
exports.GetAttributeValue = (elem, attributeName, defaultValue = null) => {
    var attribute = elem.attributes[attributeName];
    
    if (attribute == null) {
        return defaultValue;
    }
    
    return attribute.value;
};


///
/// Recurse parent elements until one with the given class is found.
///
exports.GetParentWithClass = (element, className) => {
    while (element != null) {
        if (element.classList.contains(className)) {
            return element;
        }
        
        element = element.parentElement;
    }
    
    return null;
};


///
/// Listen for mouse movements and save mouse position.
///
exports.mousePosition = {
    "x": 0,
    "y": 0
};
document.addEventListener(
    "mousemove",
    (event) => {
        exports.mousePosition.x = event.clientX;
        exports.mousePosition.y = event.clientY;
    },
    true
);


///
/// Get the element currently under the mouse.
///
exports.GetElementUnderMouse = () => {
    var hoverElement = document.elementFromPoint(
        Util.mousePosition.x,
        Util.mousePosition.y
    );
    
    return hoverElement;
};


///
/// Get the element currently under the mouse.
///
exports.InIframe = () => {
    try {
        return (window.self !== window.top);
    }
    catch (e) {
        return true;
    }
};


exports.URL_OPEN_LIMIT = 1000;
var _urlsOpened = 0;

///
/// Open a window with a given URL and delay (timeout).
///
exports.OpenUrl = (url, openInBackground) => {
    if (!openInBackground) {
        openInBackground = false;
    }
    
    exports.Log(_urlsOpened, exports.URL_OPEN_LIMIT);
    if (_urlsOpened >= exports.URL_OPEN_LIMIT) {
        return false;
    }
    
    exports.Log("OpenUrl(" + url + ")");
    ++_urlsOpened;
    /*/
    setTimeout(
        function () {
            window.open(url);
        },
        10 * _urlsOpened
    );
    /*/
    GM_openInTab(url, openInBackground);
    //*/
    
    return true;
};


///
/// Reset the opened URL counter.
///
exports.ResetOpenedUrlCounter = () => {
    _urlsOpened = 0;
};


///
/// Parse float from a string (any numeric value from a string).
///
exports.ParseFloatFromString = (string) => {
    var regex = /[+-]?\d+([.,]\d+)?/g;
    
    var matches = string.match(regex);
    
    if (matches == null) {
        return 0.0;
    }
    
    var floats = matches.map(
        function(v) {
            return parseFloat(v.replace(",", "."));
        }
    );
    
    return ((floats.length != 0) ? floats[0] : 0.0);
};


///
/// Query a selector until it isn't null.
///
exports.WaitForSelector = (selector, maxWaitTime) => {
    var querySelector = null;
    querySelector = (resolve, maxWait, startTime) => {
        startTime = startTime || (new Date()).getMilliseconds();
        var currentTime = (new Date()).getMilliseconds();
        
        //exports.Log("WaitForSelector.querySelector()", startTime, startTime + maxWait, currentTime);
        
        if (currentTime >= (startTime + maxWait)) {
            resolve(null);
            
            return;
        }
        
        var element = document.querySelector(selector);
        
        if (element == null) {
            // Element not found, try again next frame
            setTimeout(
                () => querySelector(resolve, maxWait, startTime),
                0
            );
            
            return;
        }
        
        // Element found, resolve
        resolve(element);
    };
    
    maxWaitTime = maxWaitTime || 500;
    
    return new Promise(
        (resolve) => querySelector(resolve, maxWaitTime)
    );
};


// LIBRARY: END
return exports;
})();