papazeal

games • apps • anything

Svelte Reorder List

[
 "🍎 Apples",
 "🍊 Oranges",
 "🍉 Watermelons",
 "🥝 Kiwis"
]

<script>
const fruits = $state(["🍎 Apples", "🍊 Oranges", "🍉 Watermelons", "🥝 Kiwis"]);

let dragFrom = $state(null);
let dragTo = $state(null);

function dragStart(e) {
    dragFrom = e.currentTarget.getAttribute("index");
    e.dataTransfer.effectAllowed = "move";
    e.currentTarget.classList.add("!cursor-grabbing");
}

function dragOver(e) {
    e.preventDefault();

    if (dragFrom != e.currentTarget.getAttribute("index")) {
        dragTo = e.currentTarget.getAttribute("index");
        let [item] = fruits.splice(dragFrom, 1);
        fruits.splice(dragTo, 0, item);
        dragFrom = dragTo;
    }
}

function dragEnd(e) {
    dragFrom = null;
    e.currentTarget.classList.remove("!cursor-grabbing");
}
</script>


<div class="grid shadow-lg rounded-lg mx-auto bg-white text-slate-900  overflow-hidden">
	{#each fruits as fruit,index}
	<div 
		class="px-4 py-2.5 border-b border-slate-200 cursor-grab" 
		class:bg-blue-50={dragFrom == index}
		draggable="true"
		index={index}
		ondragstart={dragStart}
		ondragover={dragOver}
		ondragend={dragEnd}
		>{fruit}</div>
	{/each}
</div>