bitwarden-browser/apps/browser/src/autofill/utils/utils.ts

112 lines
3.2 KiB
TypeScript

/**
* Generates a random string of characters that formatted as a custom element name.
*/
function generateRandomCustomElementName(): string {
const generateRandomChars = (length: number): string => {
const chars = "abcdefghijklmnopqrstuvwxyz";
const randomChars = [];
const randomBytes = new Uint8Array(length);
globalThis.crypto.getRandomValues(randomBytes);
for (let byteIndex = 0; byteIndex < randomBytes.length; byteIndex++) {
const byte = randomBytes[byteIndex];
randomChars.push(chars[byte % chars.length]);
}
return randomChars.join("");
};
const length = Math.floor(Math.random() * 5) + 8; // Between 8 and 12 characters
const numHyphens = Math.min(Math.max(Math.floor(Math.random() * 4), 1), length - 1); // At least 1, maximum of 3 hyphens
const hyphenIndices: number[] = [];
while (hyphenIndices.length < numHyphens) {
const index = Math.floor(Math.random() * (length - 1)) + 1;
if (!hyphenIndices.includes(index)) {
hyphenIndices.push(index);
}
}
hyphenIndices.sort((a, b) => a - b);
let randomString = "";
let prevIndex = 0;
for (let index = 0; index < hyphenIndices.length; index++) {
const hyphenIndex = hyphenIndices[index];
randomString = randomString + generateRandomChars(hyphenIndex - prevIndex) + "-";
prevIndex = hyphenIndex;
}
randomString += generateRandomChars(length - prevIndex);
return randomString;
}
/**
* Builds a DOM element from an SVG string.
*
* @param svgString - The SVG string to build the DOM element from.
* @param ariaHidden - Determines whether the SVG should be hidden from screen readers.
*/
function buildSvgDomElement(svgString: string, ariaHidden = true): HTMLElement {
const domParser = new DOMParser();
const svgDom = domParser.parseFromString(svgString, "image/svg+xml");
const domElement = svgDom.documentElement;
domElement.setAttribute("aria-hidden", `${ariaHidden}`);
return domElement;
}
/**
* Sends a message to the extension.
*
* @param command - The command to send.
* @param options - The options to send with the command.
*/
async function sendExtensionMessage(
command: string,
options: Record<string, any> = {},
): Promise<any | void> {
return new Promise((resolve) => {
chrome.runtime.sendMessage(Object.assign({ command }, options), (response) => {
if (chrome.runtime.lastError) {
return;
}
resolve(response);
});
});
}
/**
* Sets CSS styles on an element.
*
* @param element - The element to set the styles on.
* @param styles - The styles to set on the element.
* @param priority - Determines whether the styles should be set as important.
*/
function setElementStyles(
element: HTMLElement,
styles: Partial<CSSStyleDeclaration>,
priority?: boolean,
) {
if (!element || !styles || !Object.keys(styles).length) {
return;
}
for (const styleProperty in styles) {
element.style.setProperty(
styleProperty.replace(/([a-z])([A-Z])/g, "$1-$2"), // Convert camelCase to kebab-case
styles[styleProperty],
priority ? "important" : undefined,
);
}
}
export {
generateRandomCustomElementName,
buildSvgDomElement,
sendExtensionMessage,
setElementStyles,
};