63 lines
1.6 KiB
Svelte
63 lines
1.6 KiB
Svelte
<script lang="typescript" context="module">
|
|
import { writable } from "svelte/store";
|
|
|
|
export const commandMap = writable(new Map<string, boolean>());
|
|
|
|
function initializeButton(key: string): void {
|
|
commandMap.update(
|
|
(map: Map<string, boolean>): Map<string, boolean> =>
|
|
new Map([...map, [key, document.queryCommandState(key)]])
|
|
);
|
|
}
|
|
|
|
function updateButtons(callback: (key: string) => boolean): void {
|
|
commandMap.update(
|
|
(map: Map<string, boolean>): Map<string, boolean> => {
|
|
const newMap = new Map<string, boolean>();
|
|
|
|
for (const key of map.keys()) {
|
|
newMap.set(key, callback(key));
|
|
}
|
|
|
|
return newMap;
|
|
}
|
|
);
|
|
}
|
|
|
|
export function updateActiveButtons() {
|
|
updateButtons((key: string): boolean => document.queryCommandState(key));
|
|
}
|
|
|
|
export function clearActiveButtons() {
|
|
updateButtons((): boolean => false);
|
|
}
|
|
</script>
|
|
|
|
<script lang="typescript">
|
|
import InnerButton from "./InnerButton.svelte";
|
|
|
|
export let className = "";
|
|
export let icon = "";
|
|
export let command: string;
|
|
export let activatable = true;
|
|
|
|
let active = false;
|
|
|
|
if (activatable) {
|
|
initializeButton(command);
|
|
|
|
commandMap.subscribe((map: Record<string, boolean>): void => {
|
|
active = map.get(command);
|
|
return () => map.delete(command);
|
|
});
|
|
}
|
|
|
|
function onClick(event: ClickEvent): void {
|
|
document.execCommand(command);
|
|
}
|
|
</script>
|
|
|
|
<InnerButton {className} {active} {onClick}>
|
|
{@html icon}
|
|
</InnerButton>
|