refactor: default-tool box selection (#11800)

### Changed
- Rewrite box selection in `default-tool`, the view can decide whether to be selected in box selection by return a boolean value in `onBoxSelected` method
- Cleanup unnecessary states in `default-tool` and some naming problem

blocksuite/affine/gfx/mindmap/src/view/view.ts

@@ -7,8 +7,13 @@ import {
 } from '@blocksuite/affine-model';
 import { TelemetryProvider } from '@blocksuite/affine-shared/services';
 import { requestThrottledConnectedFrame } from '@blocksuite/affine-shared/utils';
+import { Bound } from '@blocksuite/global/gfx';
 import type { PointerEventState } from '@blocksuite/std';
-import { GfxElementModelView } from '@blocksuite/std/gfx';
+import {
+  type BoxSelectionContext,
+  GfxElementModelView,
+  type SelectedContext,
+} from '@blocksuite/std/gfx';
 
 import { handleLayout } from './utils.js';
 
@@ -329,6 +334,40 @@ export class MindMapView extends GfxElementModelView<MindmapElementModel> {
     return collapseButton;
   }
 
+  override onSelected(context: SelectedContext): void | boolean {
+    const { position } = context;
+    const target = this.model.childElements.find(child => {
+      if (child.elementBound.containsPoint([position.x, position.y])) {
+        return true;
+      }
+
+      return false;
+    });
+
+    if (target) {
+      if (this.model.isLocked()) {
+        return super.onSelected(context);
+      }
+
+      if (context.multiSelect) {
+        this.gfx.selection.toggle(target);
+      } else {
+        this.gfx.selection.set({ elements: [target.id] });
+      }
+
+      return true;
+    }
+
+    return false;
+  }
+
+  override onBoxSelected(context: BoxSelectionContext) {
+    const { box } = context;
+    const bound = new Bound(box.x, box.y, box.w, box.h);
+
+    return bound.contains(this.model.elementBound);
+  }
+
   override onCreated(): void {
     this._setLayoutMethod();
     this._initCollapseButtons();