chore: merge blocksuite source code (#9213)

blocksuite/affine/components/src/peek/controller.ts

@@ -0,0 +1,31 @@
+import type { TemplateResult } from 'lit';
+
+import { PeekViewProvider } from './service.js';
+import type { PeekableClass, PeekViewService } from './type.js';
+
+export class PeekableController<T extends PeekableClass> {
+  private _getPeekViewService = (): PeekViewService | null => {
+    return this.target.std.getOptional(PeekViewProvider);
+  };
+
+  peek = (template?: TemplateResult) => {
+    return Promise.resolve<void>(
+      this._getPeekViewService()?.peek({
+        target: this.target,
+        template,
+      })
+    );
+  };
+
+  get peekable() {
+    return (
+      !!this._getPeekViewService() &&
+      (this.enable ? this.enable(this.target) : true)
+    );
+  }
+
+  constructor(
+    private target: T,
+    private enable?: (e: T) => boolean
+  ) {}
+}