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<script lang="ts">
import { random_string } from "$lib/helpers";
export let id = "textarea-" + random_string(4);
export let disabled = false;
export let rows = 2;
export let cols = 0;
export let name = "";
export let placeholder = "";
export let value;
export let label = "";
export let errorText = "";
$: shared_props = {
rows: rows || null,
cols: cols || null,
name: name || null,
id: id || null,
disabled: disabled || null,
};
let textarea;
let scrollHeight = 0;
const defaultColorClass = "border-gray-300 focus:border-teal-500 focus:ring-teal-500";
let colorClass = defaultColorClass;
$: if (errorText) {
colorClass = "placeholder-red-300 focus:border-red-500 focus:outline-none focus:ring-red-500 text-red-900 pr-10 border-red-300";
} else {
colorClass = defaultColorClass;
}
$: if (textarea) {
scrollHeight = textarea.scrollHeight;
}
function on_input(event) {
event.target.style.height = "auto";
event.target.style.height = this.scrollHeight + "px";
}
</script>
<div>
{#if label}
<label for={id} class="block text-sm font-medium text-gray-700">{label}</label>
{/if}
<div class="mt-1">
<textarea
{rows}
{name}
{id}
{...shared_props}
style="overflow-y:hidden;min-height:calc(1.5em + .75rem + 2px);{scrollHeight ? 'height:{scrollHeight}px' : ''};"
bind:value
bind:this={textarea}
on:input={on_input}
{placeholder}
class="block w-full rounded-md {colorClass} shadow-sm sm:text-sm"
/>
{#if errorText}
<p class="mt-2 text-sm text-red-600">
{errorText}
</p>
{/if}
</div>
</div>
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