multi-framework-signals/src/frontends/svelte/HelloWorld.svelte

<script lang="ts">
  import useShape from "../../ng-mock/js-land/frontendAdapters/svelte/useShape.svelte";
  import flattenObject from "../utils/flattenObject";

  const shapeObject = useShape("TestShape");

  function getNestedValue(obj: any, path: string) {
    return path
      .split(".")
      .reduce((cur, k) => (cur == null ? cur : cur[k]), obj);
  }
  function setNestedValue(obj: any, path: string, value: any) {
    const keys = path.split(".");
    let cur = obj;
    for (let i = 0; i < keys.length - 1; i++) {
      cur = cur[keys[i]];
      if (cur == null) return;
    }
    cur[keys[keys.length - 1]] = value;
  }
  const flatEntries = $derived(
    $shapeObject ? flattenObject($shapeObject as any) : []
  );
  $effect(() => {
    (window as any).svelteState = $shapeObject;
  });
</script>

{#if $shapeObject}
  <div>
    <p>Rendered in Svelte</p>
    <table border="1" cellpadding="5">
      <thead>
        <tr>
          <th>Key</th>
          <th>Value</th>
          <th>Edit</th>
        </tr>
      </thead>
      <tbody>
        {#each flatEntries as [key, value] (key)}
          <tr>
            <td style="white-space:nowrap;">{key}</td>
            <td>
              {#if value instanceof Set}
                {Array.from(value).join(", ")}
              {:else if Array.isArray(value)}
                [{value.join(", ")}]
              {:else}
                {JSON.stringify(value)}
              {/if}
            </td>
            <td>
              {#if typeof value === "string"}
                <input
                  type="text"
                  {value}
                  oninput={(e: any) =>
                    setNestedValue($shapeObject, key, e.target.value)}
                />
              {:else if typeof value === "number"}
                <input
                  type="number"
                  {value}
                  oninput={(e: any) =>
                    setNestedValue($shapeObject, key, Number(e.target.value))}
                />
              {:else if typeof value === "boolean"}
                <input
                  type="checkbox"
                  checked={value}
                  onchange={(e: any) =>
                    setNestedValue($shapeObject, key, e.target.checked)}
                />
              {:else if Array.isArray(value)}
                <div style="display:flex; gap:.5rem;">
                  <button
                    onclick={() => {
                      const cur = getNestedValue($shapeObject, key) || [];
                      setNestedValue($shapeObject, key, [
                        ...cur,
                        cur.length + 1,
                      ]);
                    }}>Add</button
                  >
                  <button
                    onclick={() => {
                      const cur = getNestedValue($shapeObject, key) || [];
                      if (cur.length)
                        setNestedValue($shapeObject, key, cur.slice(0, -1));
                    }}>Remove</button
                  >
                </div>
              {:else if value instanceof Set}
                <div style="display:flex; gap:.5rem;">
                  <button
                    onclick={() => {
                      const cur: Set<any> = getNestedValue($shapeObject, key);
                      cur.add(`item${cur.size + 1}`);
                    }}>Add</button
                  >
                  <button
                    onclick={() => {
                      const cur: Set<any> = getNestedValue($shapeObject, key);
                      const last = Array.from(cur).pop();
                      if (last !== undefined) cur.delete(last);
                    }}>Remove</button
                  >
                </div>
              {:else}
                N/A
              {/if}
            </td>
          </tr>
        {/each}
      </tbody>
    </table>
  </div>
{:else}
  <p>Loading state</p>
{/if}