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<!-- frontend/shared/TopBarPanel.svelte -->
<script lang="ts">
import { createEventDispatcher, onMount } from "svelte";
const dispatch = createEventDispatcher<{
expand: void;
collapse: void;
}>();
export let open = true;
export let height: number | string;
export let width: number | string;
export let bring_to_front = false;
export let rounded_borders = false;
let mounted = false;
let _open = false;
let width_css = typeof width === "number" ? `${width}px` : width;
let height_css = typeof height === "number" ? `${height}px` : height;
let prefersReducedMotion: boolean;
onMount(() => {
mounted = true;
const mediaQuery = window.matchMedia("(prefers-reduced-motion: reduce)");
prefersReducedMotion = mediaQuery.matches;
const updateMotionPreference = (e: MediaQueryListEvent): void => {
prefersReducedMotion = e.matches;
};
mediaQuery.addEventListener("change", updateMotionPreference);
return () => {
mediaQuery.removeEventListener("change", updateMotionPreference);
};
});
$: if (mounted) _open = open;
</script>
<div
class="top-bar"
class:open={_open}
class:reduce-motion={prefersReducedMotion}
class:on-top={bring_to_front}
class:rounded={rounded_borders}
style="height: {height_css}; width: {width_css};"
>
<button
on:click={() => {
_open = !_open;
open = _open;
if (_open) {
dispatch("expand");
} else {
dispatch("collapse");
}
}}
class="toggle-top-button"
aria-label="Toggle Top Bar"
>
<div class="chevron">
<span class="chevron-arrow"></span>
</div>
</button>
<div class="bar-content">
<slot />
</div>
</div>
<style>
.top-bar {
display: flex;
flex-direction: column;
position: fixed;
top: 0;
left: 50%;
background-color: var(--background-fill-secondary);
transform: translateX(-50%) translateY(-100%);
z-index: 1000;
border-bottom: 1px solid var(--border-color-primary);
box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.top-bar.rounded {
border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}
.top-bar.on-top {
z-index: 2000;
}
.top-bar:not(.reduce-motion) {
transition: transform 0.3s ease-in-out;
}
.top-bar.open {
transform: translateX(-50%) translateY(0);
}
.toggle-top-button {
position: absolute;
bottom: 0;
left: 50%;
transform: translate(-50%, 100%);
background: var(--background-fill-secondary);
border: 1px solid var(--border-color-primary);
border-top: none;
cursor: pointer;
padding: var(--size-2);
display: flex;
align-items: center;
justify-content: center;
width: var(--size-10);
height: var(--size-6);
z-index: inherit;
border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.toggle-top-button:not(.reduce-motion) {
transition: all 0.3s ease-in-out;
}
.chevron {
position: relative;
display: block;
width: var(--size-3);
height: var(--size-3);
}
.chevron-arrow {
position: absolute;
box-sizing: border-box;
top: 10%;
left: 18%;
width: 80%;
height: 80%;
border-bottom: var(--size-0-5) solid var(--body-text-color);
border-right: var(--size-0-5) solid var(--body-text-color);
transform: rotate(45deg);
}
.top-bar:not(.reduce-motion) .chevron-arrow {
transition: transform 0.3s ease-in-out;
}
.top-bar.open .chevron-arrow {
transform: rotate(-135deg);
}
.bar-content {
padding: var(--size-4);
overflow-y: auto;
flex-grow: 1;
}
</style> |