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Key-Based Config

Allows end users to configure scripts (deprecated).

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/419978/1308990/Key-Based%20Config.js 

// ==UserScript==
// @name        Key-Based Config
// @author      Callum Latham <[email protected]> (https://github.com/ctl2/key-based-config)
// @exclude     *
// @description A script for interfacing with my Key-Based Config UI.
// @grant       GM.setValue
// @grant       GM.getValue
// ==/UserScript==

const FRAME_URL = 'https://callumlatham.com/key-based-config/';
const STYLE = {
    'position': 'fixed',
    'height': '100vh',
    'width': '100vw'
};

let isOpen = false;

function kbcConfigure(storageKey, title, metaTree, isFixed = false, customStyle = {}) {
    return new Promise((resolve, reject) => {
        if (isOpen) {
            reject(new Error('A Key-Based Config iFrame is already open.'));
        } else if (typeof GM.getValue !== 'function' || typeof GM.setValue !== 'function') {
            reject(new Error('The key-based config script requires GM.getValue and GM.setValue permissions.'));
        } else {
            const iframe = document.createElement('iframe');
            const style = {
                ...STYLE,
                ...customStyle
            }

            iframe.src = FRAME_URL;

            for (const [property, value] of Object.entries(style)) {
                iframe.style[property] = value;
            }

            window.document.body.appendChild(iframe);

            isOpen = true;

            // Listen for iFrame communication
            window.addEventListener('message', async (message) => {
                switch (message.data.event) {
                    case 'open':
                        // Pass initialisation data
                        const valueForest = await GM.getValue(storageKey, []);

                        iframe.contentWindow.postMessage({title, metaTree, valueForest, isFixed}, '*');

                        break;

                    case 'close':
                        // Close iFrame
                        isOpen = false;
                        iframe.remove();

                        window.setTimeout(() => {
                            // Save changes
                            GM.setValue(storageKey, message.data.valueForest);

                            // Resolve promise
                            resolve(message.data.valueForest);
                        }, 1);

                        break;

                    case 'error':
                        // Close iFrame
                        isOpen = false;
                        iframe.remove();

                        // Resolve promise
                        reject(message.data.reason);

                        break;

                    default:
                        // No need to error the promise here; I'm probably just observing a message from another script
                }
            });
        }
    });
}