ccb2e899b3
* use wrappedJSObject to create style elements in page context * skip unnecessary polyfills in content scripts * group all style management stuff in injector * support all API methods in content scripts
79 lines
2.1 KiB
JavaScript
79 lines
2.1 KiB
JavaScript
'use strict';
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// eslint-disable-next-line no-unused-expressions
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self.INJECTED !== 1 && (() => {
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if (!Object.entries) {
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Object.entries = obj => Object.keys(obj).map(k => [k, obj[k]]);
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}
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if (!Object.values) {
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Object.values = obj => Object.keys(obj).map(k => obj[k]);
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}
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// the above was shared by content scripts and workers,
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// the rest is only needed for our extension pages
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if (!self.chrome || !self.chrome.tabs) return;
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if (typeof document === 'object') {
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const ELEMENT_METH = {
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append: {
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base: [Element, Document, DocumentFragment],
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fn: (node, frag) => {
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node.appendChild(frag);
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}
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},
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prepend: {
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base: [Element, Document, DocumentFragment],
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fn: (node, frag) => {
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node.insertBefore(frag, node.firstChild);
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}
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},
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before: {
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base: [Element, CharacterData, DocumentType],
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fn: (node, frag) => {
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node.parentNode.insertBefore(frag, node);
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}
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},
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after: {
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base: [Element, CharacterData, DocumentType],
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fn: (node, frag) => {
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node.parentNode.insertBefore(frag, node.nextSibling);
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}
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}
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};
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for (const [key, {base, fn}] of Object.entries(ELEMENT_METH)) {
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for (const cls of base) {
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if (cls.prototype[key]) {
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continue;
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}
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cls.prototype[key] = function (...nodes) {
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const frag = document.createDocumentFragment();
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for (const node of nodes) {
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frag.appendChild(typeof node === 'string' ? document.createTextNode(node) : node);
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}
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fn(this, frag);
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};
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}
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}
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}
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try {
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if (!localStorage) {
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throw new Error('localStorage is null');
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}
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localStorage._access_check = 1;
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delete localStorage._access_check;
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} catch (err) {
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Object.defineProperty(self, 'localStorage', {value: {}});
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}
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try {
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if (!sessionStorage) {
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throw new Error('sessionStorage is null');
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}
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sessionStorage._access_check = 1;
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delete sessionStorage._access_check;
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} catch (err) {
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Object.defineProperty(self, 'sessionStorage', {value: {}});
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}
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})();
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