anki/ts/editor-toolbar/WithDropdownMenu.svelte
2021-04-15 13:09:49 +02:00

47 lines
1.3 KiB
Svelte

<script lang="typescript">
import { onMount } from "svelte";
import type { ButtonDefinition } from "./types";
export let button: ButtonDefinition;
export let menuId: string;
function extend({ className, props, ...rest }: ButtonDefinition): ButtonDefinition {
return {
className: `${className} dropdown-toggle`,
props: {
"data-bs-toggle": "dropdown",
"aria-expanded": "false",
...props,
},
...rest,
};
}
function createDropdown({ detail }: CustomEvent): void {
const button: HTMLButtonElement = detail.button;
/* Prevent focus on menu activation */
const noop = () => {};
Object.defineProperty(button, "focus", { value: noop });
/* Set custom menu without using .dropdown
* Rendering the menu here would cause the menu to
* be displayed outside of the visible area
*/
const dropdown = new bootstrap.Dropdown(button);
const menu = button.getRootNode().getElementById(menuId);
if (!menu) {
console.log(`Could not find menu "${menuId}" for dropdown menu.`);
}
dropdown._menu = menu;
}
</script>
<svelte:component
this={button.component}
{...extend(button)}
on:mount={createDropdown} />