193 lines
4.7 KiB
Svelte
193 lines
4.7 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 type { CodeMirror as CodeMirrorType } from "../code-mirror";
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import type { EditingInputAPI } from "../EditingArea.svelte";
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export interface PlainTextInputAPI extends EditingInputAPI {
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name: "plain-text";
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moveCaretToEnd(): void;
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toggle(): boolean;
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getEditor(): CodeMirrorType.Editor;
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}
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export const parsingInstructions: string[] = [];
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</script>
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<script lang="ts">
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import { onMount, tick } from "svelte";
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import { writable } from "svelte/store";
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import { pageTheme } from "../../sveltelib/theme";
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import { baseOptions, gutterOptions, htmlanki } from "../code-mirror";
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import type { CodeMirrorAPI } from "../CodeMirror.svelte";
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import CodeMirror from "../CodeMirror.svelte";
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import { context as decoratedElementsContext } from "../DecoratedElements.svelte";
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import { context as editingAreaContext } from "../EditingArea.svelte";
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export let hidden = false;
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const configuration = {
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mode: htmlanki,
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...baseOptions,
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...gutterOptions,
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};
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const { editingInputs, content } = editingAreaContext.get();
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const decoratedElements = decoratedElementsContext.get();
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const code = writable($content);
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function adjustInputHTML(html: string): string {
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for (const component of decoratedElements) {
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html = component.toUndecorated(html);
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}
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return html;
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}
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const parser = new DOMParser();
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function removeTag(element: HTMLElement, tagName: string): void {
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for (const elem of element.getElementsByTagName(tagName)) {
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elem.remove();
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}
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}
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function createDummyDoc(html: string): string {
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return (
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"<html><head></head><body>" +
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parsingInstructions.join("") +
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html +
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"</body>"
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);
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}
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function parseAsHTML(html: string): string {
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const doc = parser.parseFromString(createDummyDoc(html), "text/html");
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const body = doc.body;
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removeTag(body, "script");
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removeTag(body, "link");
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removeTag(body, "style");
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return doc.body.innerHTML;
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}
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function adjustOutputHTML(html: string): string {
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for (const component of decoratedElements) {
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html = component.toStored(html);
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}
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return html;
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}
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let codeMirror: CodeMirrorAPI;
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function focus(): void {
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codeMirror?.editor.focus();
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}
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function moveCaretToEnd(): void {
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codeMirror?.editor.setCursor(codeMirror.editor.lineCount(), 0);
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}
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function refocus(): void {
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(codeMirror?.editor as any).display.input.blur();
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focus();
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moveCaretToEnd();
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}
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function toggle(): boolean {
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hidden = !hidden;
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return hidden;
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}
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function getEditor(): CodeMirrorType.Editor {
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return codeMirror?.editor;
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}
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export const api = {
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name: "plain-text",
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focus,
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focusable: !hidden,
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moveCaretToEnd,
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refocus,
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toggle,
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getEditor,
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} as PlainTextInputAPI;
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function pushUpdate(): void {
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api.focusable = !hidden;
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$editingInputs = $editingInputs;
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}
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function refresh() {
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codeMirror.editor.refresh();
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}
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$: {
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hidden;
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tick().then(refresh);
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pushUpdate();
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}
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onMount(() => {
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$editingInputs.push(api);
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$editingInputs = $editingInputs;
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const unsubscribeFromEditingArea = content.subscribe((value: string): void => {
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const adjusted = adjustInputHTML(value);
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code.set(adjusted);
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});
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const unsubscribeToEditingArea = code.subscribe((value: string): void => {
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const parsed = parseAsHTML(value);
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content.set(adjustOutputHTML(parsed));
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});
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return () => {
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unsubscribeFromEditingArea();
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unsubscribeToEditingArea();
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};
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});
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</script>
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<div
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class="plain-text-input"
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class:light-theme={!$pageTheme.isDark}
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class:hidden
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on:focusin
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on:focusout
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>
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<CodeMirror
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{configuration}
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{code}
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bind:api={codeMirror}
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on:change={({ detail: html }) => code.set(parseAsHTML(html))}
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/>
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</div>
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<style lang="scss">
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.plain-text-input {
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overflow-x: hidden;
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:global(.CodeMirror) {
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border-radius: 0 0 5px 5px;
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}
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:global(.CodeMirror-lines) {
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padding: 6px 0;
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}
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&.hidden {
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display: none;
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}
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}
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.light-theme :global(.CodeMirror) {
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border-top: 1px solid #ddd;
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}
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</style>
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