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<script lang="ts">
import { onMount, tick } from 'svelte';
export let value = '';
export let placeholder = '';
export let rows = 1;
export let minSize = null;
export let maxSize = null;
export let required = false;
export let readonly = false;
export let className =
'w-full rounded-lg px-3.5 py-2 text-sm bg-gray-50 dark:text-gray-300 dark:bg-gray-850 outline-hidden h-full';
export let onInput = () => {};
export let onBlur = () => {};
let textareaElement;
// Adjust height on mount and after setting the element.
onMount(async () => {
await tick();
resize();
requestAnimationFrame(() => {
// setInterveal to cehck until textareaElement is set
const interval = setInterval(() => {
if (textareaElement) {
clearInterval(interval);
resize();
}
}, 100);
});
});
const resize = () => {
if (textareaElement) {
textareaElement.style.height = '';
let height = textareaElement.scrollHeight;
if (maxSize && height > maxSize) {
height = maxSize;
}
if (minSize && height < minSize) {
height = minSize;
}
textareaElement.style.height = `${height}px`;
}
};
</script>
<textarea
bind:this={textareaElement}
bind:value
{placeholder}
class={className}
style="field-sizing: content;"
{rows}
{required}
{readonly}
on:input={(e) => {
resize();
onInput(e);
}}
on:focus={() => {
resize();
}}
on:blur={onBlur}
/>
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