feat(editor): simple table block (#9740)

close: BS-2122, BS-2125, BS-2124, BS-2420, PD-2073, BS-2126, BS-2469, BS-2470, BS-2478, BS-2471

blocksuite/affine/shared/src/utils/virtual-padding.ts

@@ -0,0 +1,35 @@
+import type { BlockComponent } from '@blocksuite/block-std';
+import { autoUpdate } from '@floating-ui/dom';
+import { signal } from '@preact/signals-core';
+import type { ReactiveController } from 'lit';
+
+import { DocModeProvider } from '../services/doc-mode-service';
+
+export class VirtualPaddingController implements ReactiveController {
+  public readonly virtualPadding$ = signal(0);
+  constructor(private readonly block: BlockComponent) {
+    block.addController(this);
+  }
+
+  get std() {
+    return this.host.std;
+  }
+
+  get host() {
+    return this.block.host;
+  }
+
+  hostConnected(): void {
+    if (this.std.get(DocModeProvider).getEditorMode() === 'edgeless') {
+      return;
+    }
+    this.block.disposables.add(
+      autoUpdate(this.host, this.block, () => {
+        const padding =
+          this.block.getBoundingClientRect().left -
+          this.host.getBoundingClientRect().left;
+        this.virtualPadding$.value = Math.max(0, padding - 72);
+      })
+    );
+  }
+}