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libReplaceText

替换网页内文本, 达到本地化的目的

Version vom 04.10.2018. Aktuellste Version

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/372862/634005/libReplaceText.js 

// ==UserScript==
// @name        libReplaceText
// @namespace   https://github.com/lzghzr/TampermonkeyJS
// @version     0.0.1
// @author      lzghzr
// @description 替换网页内文本, 达到本地化的目的
// @license     MIT
// @grant       none
// @run-at      document-end
// ==/UserScript==
const W = typeof unsafeWindow === 'undefined' ? window : unsafeWindow;
class ReplaceText {
    constructor(i18n) {
        this.alert = W.alert.bind(W);
        this.confirm = W.confirm.bind(W);
        this.prompt = W.prompt.bind(W);
        this.i18n = new Map(i18n);
        const bodyObserver = new MutationObserver(mutations => {
            mutations.forEach(mutation => {
                mutation.addedNodes.forEach(addedNode => this.replaceText(addedNode));
            });
        });
        bodyObserver.observe(document.body, { childList: true, subtree: true });
        this.replaceAlert();
        this.replaceText(document.body);
    }
    replaceAlert() {
        W.alert = (message) => {
            if (this.i18n.has(message))
                message = this.i18n.get(message);
            return this.alert(message);
        };
        W.confirm = (message) => {
            if (this.i18n.has(message))
                message = this.i18n.get(message);
            return this.confirm(message);
        };
        W.prompt = (message, _default) => {
            if (this.i18n.has(message))
                message = this.i18n.get(message);
            return this.prompt(message, _default);
        };
    }
    replaceText(node) {
        this.nodeForEach(node).forEach(textNode => {
            if (textNode instanceof Text && this.i18n.has(textNode.data))
                textNode.data = this.i18n.get(textNode.data);
            else if (textNode instanceof HTMLInputElement) {
                if (textNode.type === 'button' && this.i18n.has(textNode.value))
                    textNode.value = this.i18n.get(textNode.value);
                else if (textNode.type === 'text' && this.i18n.has(textNode.placeholder))
                    textNode.placeholder = this.i18n.get(textNode.placeholder);
            }
        });
    }
    nodeForEach(node) {
        const list = [];
        if (node.childNodes.length === 0)
            list.push(node);
        else {
            node.childNodes.forEach(child => {
                if (child.childNodes.length === 0)
                    list.push(child);
                else
                    list.push(...this.nodeForEach(child));
            });
        }
        return list;
    }
}