98 lines
2.8 KiB
Svelte
98 lines
2.8 KiB
Svelte
<!--
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Copyright: Ankitects Pty Ltd and contributors
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License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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-->
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<script context="module" lang="ts">
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import { CodeMirror as CodeMirrorLib } from "./code-mirror";
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export interface CodeMirrorAPI {
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readonly editor: CodeMirrorLib.EditorFromTextArea;
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}
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</script>
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<script lang="ts">
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import { createEventDispatcher, getContext } from "svelte";
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import type { Writable } from "svelte/store";
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import storeSubscribe from "../sveltelib/store-subscribe";
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import { directionKey } from "../lib/context-keys";
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import { lightCodeMirrorTheme, darkCodeMirrorTheme } from "./code-mirror";
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import { pageTheme } from "../sveltelib/theme";
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export let configuration: CodeMirror.EditorConfiguration;
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export let code: Writable<string>;
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const direction = getContext<Writable<"ltr" | "rtl">>(directionKey);
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const defaultConfiguration = {
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direction: $direction,
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rtlMoveVisually: true,
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};
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let codeMirror: CodeMirror.EditorFromTextArea;
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$: codeMirror?.setOption("direction", $direction);
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function setValue(content: string): void {
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codeMirror.setValue(content);
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}
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const { subscribe, unsubscribe } = storeSubscribe(code, setValue, false);
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const dispatch = createEventDispatcher();
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function openCodeMirror(textarea: HTMLTextAreaElement): void {
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codeMirror = CodeMirrorLib.fromTextArea(textarea, {
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...defaultConfiguration,
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...configuration,
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});
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// TODO passing in the tabindex option does not do anything: bug?
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codeMirror.getInputField().tabIndex = 0;
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let ranges: CodeMirrorLib.Range[] | null = null;
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codeMirror.on("change", () => dispatch("change", codeMirror.getValue()));
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codeMirror.on("mousedown", () => {
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ranges = null;
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});
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codeMirror.on("focus", () => {
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if (ranges) {
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try {
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codeMirror.setSelections(ranges);
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} catch {
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ranges = null;
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codeMirror.setCursor(codeMirror.lineCount(), 0);
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}
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}
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unsubscribe();
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dispatch("focus");
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});
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codeMirror.on("blur", () => {
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ranges = codeMirror.listSelections();
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subscribe();
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dispatch("blur");
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});
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subscribe();
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}
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$: codeMirror?.setOption(
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"theme",
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$pageTheme.isDark ? darkCodeMirrorTheme : lightCodeMirrorTheme,
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);
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export const api = Object.create(
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{},
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{
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editor: { get: () => codeMirror },
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},
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) as CodeMirrorAPI;
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</script>
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<div class="code-mirror">
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<textarea tabindex="-1" hidden use:openCodeMirror />
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</div>
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<style lang="scss">
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.code-mirror :global(.CodeMirror) {
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height: auto;
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}
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</style>
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