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<script lang="ts">
import { onDestroy } from "svelte";
import { t } from "$lib/i18n/translations";
import { hapticSwitch } from "$lib/haptics";
import { savingHandler } from "$lib/api/saving-handler";
import { downloadButtonState } from "$lib/state/omnibox";
import type { CobaltDownloadButtonState } from "$lib/types/omnibox";
export let url: string;
export let disabled = false;
export let loading = false;
$: buttonText = ">>";
$: buttonAltText = $t("a11y.save.download");
type DownloadButtonState = "idle" | "think" | "check" | "done" | "error";
const unsubscribe = downloadButtonState.subscribe(
(state: CobaltDownloadButtonState) => {
disabled = state !== "idle";
loading = state === "think" || state === "check";
buttonText = {
idle: ">>",
think: "...",
check: "..?",
done: ">>>",
error: "!!",
}[state];
buttonAltText = $t(
{
idle: "a11y.save.download",
think: "a11y.save.download.think",
check: "a11y.save.download.check",
done: "a11y.save.download.done",
error: "a11y.save.download.error",
}[state]
);
// states that don't wait for anything, and thus can
// transition back to idle after some period of time.
const final: DownloadButtonState[] = ["done", "error"];
if (final.includes(state)) {
setTimeout(() => downloadButtonState.set("idle"), 1500);
}
}
);
onDestroy(() => unsubscribe());
</script>
<button
id="download-button"
{disabled}
on:click={() => {
hapticSwitch();
savingHandler({ url });
}}
aria-label={buttonAltText}
>
<span id="download-state">{buttonText}</span>
</button>
<style>
#download-button {
display: flex;
align-items: center;
justify-content: center;
height: 100%;
min-width: 48px;
width: 48px;
border-radius: 0;
/* visually align the button, +1.5px because of inset box-shadow on parent */
padding: 0 13.5px 0 12px;
background: none;
box-shadow: none;
transform: none;
border-left: 1.5px var(--input-border) solid;
border-top-right-radius: var(--border-radius);
border-bottom-right-radius: var(--border-radius);
}
#download-button:dir(rtl) {
border-left: 0;
border-top-right-radius: 0;
border-bottom-right-radius: 0;
border-right: 1.5px var(--input-border) solid;
border-top-left-radius: var(--border-radius);
border-bottom-left-radius: var(--border-radius);
direction: ltr;
padding: 0 12px 0 15px;
}
#download-state {
font-size: 24px;
font-family: "Noto Sans Mono", "IBM Plex Mono", monospace;
font-weight: 400;
text-align: center;
text-indent: -5px;
letter-spacing: -5.3px;
margin-bottom: 2px;
}
#download-button:disabled {
cursor: unset;
color: var(--gray);
}
:global(#input-container.focused) #download-button {
border-left: 2px var(--secondary) solid;
}
:global(#input-container.focused) #download-button:dir(rtl) {
border-left: 0;
border-right: 2px var(--secondary) solid;
}
@media (hover: hover) {
#download-button:hover:not(:disabled) {
background: var(--button-hover-transparent);
}
}
#download-button:active:not(:disabled) {
background: var(--button-press-transparent);
}
</style>
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