Add new sharing dialog to filesystem

svelte/src/layout/Dialog.svelte

@@ -0,0 +1,51 @@
+<script lang="ts">
+let dialog: HTMLDialogElement
+
+export const open = (location: DOMRect) => {
+	// Show the window so we can get the location
+	dialog.showModal()
+
+	const edge_offset = 5
+
+	// Get the egdes of the screen, so the window does not spawn off-screen
+	const window_rect = dialog.getBoundingClientRect()
+	const max_left = window.innerWidth - window_rect.width - edge_offset
+	const max_top = window.innerHeight - window_rect.height - edge_offset
+
+	// Prevent the window from being glued to the edges
+	const min_left = Math.max(location.left, edge_offset)
+	const min_top = Math.max(location.bottom, edge_offset)
+
+	// Place the window
+	dialog.style.left = Math.round(Math.min(min_left, max_left)) + "px"
+	dialog.style.top = Math.round(Math.min(min_top, max_top)) + "px"
+}
+
+// Attach a click handler so that the dialog is closed when the user clicks
+// outside the dialog. The way this check works is that there is usually an
+// element inside the dialog with all the content. When the click target is
+// the dialog itself then the click was on the dialog background
+const click = (e: MouseEvent) => {
+	if (e.target === dialog) {
+		dialog.close()
+	}
+}
+</script>
+
+<!-- svelte-ignore a11y-click-events-have-key-events -->
+<!-- svelte-ignore a11y-no-noninteractive-element-interactions -->
+<dialog bind:this={dialog} on:click={click}>
+	<slot></slot>
+</dialog>
+
+<style>
+dialog {
+	background-color: var(--card_color);
+	color: var(--body_text_color);
+	border-radius: 8px;
+	border: none;
+	padding: 4px;
+	margin: 0;
+	box-shadow: 2px 2px 10px -4px #000000;
+}
+</style>