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a2c258a627
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0ca34c2a69
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@ -3,47 +3,14 @@ import {render} from "preact";
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import {log, querySelectorAll} from "../../utilities/exports.js";
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import {
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type MarkdownSnippet,
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type ProcessedSnippetShortcut,
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MarkdownSnippetMarker,
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processSnippetShortcut,
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} from "../../storage/exports.js";
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/** Type shorthand for a snippet with its processed shortcut. */
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type ProcessedSnippetTuple = [Value<MarkdownSnippet>, ProcessedSnippetShortcut];
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export function runMarkdownToolbarFeature(
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snippets: Array<Value<MarkdownSnippet>>,
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) {
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const count = addToolbarsToTextareas(snippets);
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if (count > 0) {
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// Process all the snippet shortcuts outside of the keydown handler so we
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// don't have to process them on every keydown event.
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const snippetsWithProcessedShortcuts: ProcessedSnippetTuple[] = snippets
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// Exclude snippets that don't have shortcuts defined.
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.filter((snippet) => snippet.value.shortcut !== undefined)
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// Map the result as a tuple of the snippet and the processed shortcut.
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.map(
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(snippet) =>
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[
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snippet,
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processSnippetShortcut(snippet.value.shortcut!),
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] satisfies ProcessedSnippetTuple,
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);
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// Only add the keydown listener if it hasn't already been added and if
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// there are any snippets with shortcuts to listen for.
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if (
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!document.body.dataset.trxMarkdownToolbarKeydownListening &&
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snippetsWithProcessedShortcuts.length > 0
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) {
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document.addEventListener("keydown", async (event: KeyboardEvent) => {
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await keyDownHandler(event, snippetsWithProcessedShortcuts);
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});
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document.body.dataset.trxMarkdownToolbarKeydownListening = "true";
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log("Markdown Toolbar: Listening for keyboard shortcuts.");
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}
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log(`Markdown Toolbar: Initialized for ${count} textareas.`);
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}
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}
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@ -158,7 +125,7 @@ function SnippetDropdown(props: Props) {
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);
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}
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function insertSnippet(props: Omit<Required<Props>, "allSnippets">) {
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function insertSnippet(props: Required<Props>) {
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const {textarea, snippet} = props;
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const {selectionStart, selectionEnd} = textarea;
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@ -221,48 +188,3 @@ function insertSnippet(props: Omit<Required<Props>, "allSnippets">) {
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textarea.selectionEnd = selectionEnd + cursorPosition;
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}
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/**
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* The global handler for the `keydown` event.
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*
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* Keydown is chosen over keypress or keyup because it can be used to prevent
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* the browser's keyboard shortcuts using `event.preventDefault()`.
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*/
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async function keyDownHandler(
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event: KeyboardEvent,
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snippets: ProcessedSnippetTuple[],
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): Promise<void> {
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const textarea = event.target;
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// Markdown toolbars are only ever added for `<textarea>` elements, if the
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// user is typing in a different input field we don't want to check for
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// anything.
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if (!(textarea instanceof HTMLTextAreaElement)) {
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return;
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}
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const [key, alt, ctrl, shift] = [
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event.key.toLowerCase(),
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event.altKey,
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event.ctrlKey,
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event.shiftKey,
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];
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for (const [snippet, shortcut] of snippets) {
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if (
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shortcut.key === key &&
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shortcut.alt === alt &&
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shortcut.ctrl === ctrl &&
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shortcut.shift === shift
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) {
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// Prevent browser keyboard shortcuts like `CTRL+S` from triggering.
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event.preventDefault();
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insertSnippet({
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snippet,
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textarea,
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});
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break;
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}
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}
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}
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@ -148,15 +148,6 @@ class App extends Component<Props, State> {
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<b>Name</b>, the name of the snippet to display in the
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toolbar.
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</li>
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<li>
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<b>Shortcut</b>, an optional keyboard shortcut that will
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insert the snippet when the combination of keys is pressed. A
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shortcut is defined as a list of optional modifier keys and a
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single final main key separated by plus signs, for example{" "}
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<code>CTRL+ALT+S</code>. The available modifier keys are ALT,{" "}
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CTRL and SHIFT. The modifier keys can be in any order however
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the final key must come at the end.
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</li>
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<li>
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<b>Enable</b>, whether the snippet should be added to the
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toolbar.
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