forked from ankitects/anki
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PlainTextInput.svelte
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/
PlainTextInput.svelte
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<!--
Copyright: Ankitects Pty Ltd and contributors
License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
-->
<script context="module" lang="ts">
import { registerPackage } from "@tslib/runtime-require";
import lifecycleHooks from "../../sveltelib/lifecycle-hooks";
import type { CodeMirrorAPI } from "../CodeMirror.svelte";
import type { EditingInputAPI, FocusableInputAPI } from "../EditingArea.svelte";
export interface PlainTextInputAPI extends EditingInputAPI {
name: "plain-text";
moveCaretToEnd(): void;
toggle(): boolean;
codeMirror: CodeMirrorAPI;
}
export const parsingInstructions: string[] = [];
export const closeHTMLTags = writable(true);
const [lifecycle, instances, setupLifecycleHooks] =
lifecycleHooks<PlainTextInputAPI>();
registerPackage("anki/PlainTextInput", {
lifecycle,
instances,
});
</script>
<script lang="ts">
import { singleCallback } from "@tslib/typing";
import { onMount, tick } from "svelte";
import { writable } from "svelte/store";
import { pageTheme } from "../../sveltelib/theme";
import { baseOptions, gutterOptions, htmlanki } from "../code-mirror";
import CodeMirror from "../CodeMirror.svelte";
import { context as editingAreaContext } from "../EditingArea.svelte";
import { Flag } from "../helpers";
import { context as noteEditorContext } from "../NoteEditor.svelte";
import removeProhibitedTags from "./remove-prohibited";
import { storedToUndecorated, undecoratedToStored } from "./transform";
export let hidden = false;
export const focusFlag = new Flag();
$: configuration = {
mode: htmlanki,
...baseOptions,
...gutterOptions,
...{ autoCloseTags: $closeHTMLTags },
};
const { focusedInput } = noteEditorContext.get();
const { editingInputs, content } = editingAreaContext.get();
const code = writable($content);
let codeMirror = {} as CodeMirrorAPI;
async function focus(): Promise<void> {
const editor = await codeMirror.editor;
editor.focus();
}
async function moveCaretToEnd(): Promise<void> {
const editor = await codeMirror.editor;
editor.setCursor(editor.lineCount(), 0);
}
async function refocus(): Promise<void> {
const editor = (await codeMirror.editor) as any;
editor.display.input.blur();
focus();
moveCaretToEnd();
}
function toggle(): boolean {
hidden = !hidden;
return hidden;
}
async function getInputAPI(target: EventTarget): Promise<FocusableInputAPI | null> {
const editor = (await codeMirror.editor) as any;
if (target === editor.display.input.textarea) {
return api;
}
return null;
}
export const api: PlainTextInputAPI = {
name: "plain-text",
focus,
focusable: !hidden,
moveCaretToEnd,
refocus,
toggle,
getInputAPI,
codeMirror,
};
/**
* Communicate to editing area that input is not focusable
*/
function pushUpdate(isFocusable: boolean): void {
api.focusable = isFocusable;
$editingInputs = $editingInputs;
}
async function refresh(): Promise<void> {
const editor = await codeMirror.editor;
editor.refresh();
}
$: {
pushUpdate(!hidden);
tick().then(() => {
refresh();
if (focusFlag.checkAndReset()) {
refocus();
}
});
}
function onChange({ detail: html }: CustomEvent<string>): void {
code.set(removeProhibitedTags(html));
}
onMount(() => {
$editingInputs.push(api);
$editingInputs = $editingInputs;
return singleCallback(
content.subscribe((html: string): void =>
/* We call `removeProhibitedTags` here, because content might
* have been changed outside the editor, and we need to parse
* it to get the "neutral" value. Otherwise, there might be
* conflicts with other editing inputs */
code.set(removeProhibitedTags(storedToUndecorated(html))),
),
code.subscribe((html: string): void =>
content.set(undecoratedToStored(html)),
),
);
});
setupLifecycleHooks(api);
</script>
<div
class="plain-text-input"
class:light-theme={!$pageTheme.isDark}
on:focusin={() => ($focusedInput = api)}
{hidden}
>
<CodeMirror
{configuration}
{code}
{hidden}
bind:api={codeMirror}
on:change={onChange}
/>
</div>
<style lang="scss">
.plain-text-input {
height: 100%;
:global(.CodeMirror) {
height: 100%;
background: var(--canvas-code);
padding-inline: 4px;
}
:global(.CodeMirror-lines) {
padding: 8px 0;
}
:global(.CodeMirror-gutters) {
background: var(--canvas-code);
}
}
</style>