替换网页内文本, 达到本地化的目的
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/372862/634004/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
// @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;
}
}