mash: Preliminary support for widget hit test masks

components/mus/ws/window_manager_access_policy.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/mus/ws/window_manager_access_policy.h"
 
 #include "components/mus/ws/access_policy_delegate.h"
 #include "components/mus/ws/server_window.h"
 
 namespace mus {
@@ skipping 37 matching lines @@
 
 bool WindowManagerAccessPolicy::CanReorderWindow(
     const ServerWindow* window,
     const ServerWindow* relative_window,
     mojom::OrderDirection direction) const {
   return true;
 }
 
 bool WindowManagerAccessPolicy::CanDeleteWindow(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_;
+  return WasCreatedByThisConnection(window);
 }
 
 bool WindowManagerAccessPolicy::CanGetWindowTree(
     const ServerWindow* window) const {
   return true;
 }
 
 bool WindowManagerAccessPolicy::CanDescendIntoWindowForWindowTree(
     const ServerWindow* window) const {
   return true;
 }
 
 bool WindowManagerAccessPolicy::CanEmbed(const ServerWindow* window) const {
   return !delegate_->HasRootForAccessPolicy(window);
 }
 
 bool WindowManagerAccessPolicy::CanChangeWindowVisibility(
     const ServerWindow* window) const {
-  if (window->id().connection_id == connection_id_)
+  if (WasCreatedByThisConnection(window))
     return true;
   // The WindowManager can change the visibility of the WindowManager root.
   const ServerWindow* root = window->GetRoot();
   return root && window->parent() == root;
 }
 
 bool WindowManagerAccessPolicy::CanChangeWindowOpacity(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_;
+  return WasCreatedByThisConnection(window);
 }
 
 bool WindowManagerAccessPolicy::CanSetWindowSurface(
     const ServerWindow* window,
     mus::mojom::SurfaceType surface_type) const {
   if (surface_type == mojom::SurfaceType::UNDERLAY)
-    return window->id().connection_id == connection_id_;
+    return WasCreatedByThisConnection(window);
 
   if (delegate_->IsWindowRootOfAnotherTreeForAccessPolicy(window))
     return false;
-  return window->id().connection_id == connection_id_ ||
+  return WasCreatedByThisConnection(window) ||
          (delegate_->HasRootForAccessPolicy(window));
 }
 
 bool WindowManagerAccessPolicy::CanSetWindowBounds(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_;
+  return WasCreatedByThisConnection(window);
 }
 
 bool WindowManagerAccessPolicy::CanSetWindowProperties(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_;
+  return WasCreatedByThisConnection(window);
 }
 
 bool WindowManagerAccessPolicy::CanSetWindowTextInputState(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_;
+  return WasCreatedByThisConnection(window);
 }
 
 bool WindowManagerAccessPolicy::CanSetCapture(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_;
+  return WasCreatedByThisConnection(window);
 }
 
 bool WindowManagerAccessPolicy::CanSetFocus(const ServerWindow* window) const {
   return true;
 }
 
 bool WindowManagerAccessPolicy::CanSetClientArea(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_ ||
+  return WasCreatedByThisConnection(window) ||
+         delegate_->HasRootForAccessPolicy(window);
+}
+
+bool WindowManagerAccessPolicy::CanSetHitTestMask(
+    const ServerWindow* window) const {
+  return WasCreatedByThisConnection(window) ||
          delegate_->HasRootForAccessPolicy(window);
 }
 
 bool WindowManagerAccessPolicy::CanSetCursorProperties(
     const ServerWindow* window) const {
-  return window->id().connection_id == connection_id_ ||
+  return WasCreatedByThisConnection(window) ||
          delegate_->HasRootForAccessPolicy(window);
 }
 
 bool WindowManagerAccessPolicy::ShouldNotifyOnHierarchyChange(
     const ServerWindow* window,
     const ServerWindow** new_parent,
     const ServerWindow** old_parent) const {
   // Notify if we've already told the window manager about the window, or if
   // we've
   // already told the window manager about the parent. The later handles the
@@ skipping 18 matching lines @@
 
 bool WindowManagerAccessPolicy::IsValidIdForNewWindow(
     const ClientWindowId& id) const {
   // The WindowManager see windows created from other clients. If the WM doesn't
   // use the connection id when creating windows the WM could end up with two
   // windows with the same id. Because of this the wm must use the same
   // connection id for all windows it creates.
   return WindowIdFromTransportId(id.id).connection_id == connection_id_;
 }
 
+bool WindowManagerAccessPolicy::WasCreatedByThisConnection(
+    const ServerWindow* window) const {
+  return window->id().connection_id == connection_id_;
+}
+
 }  // namespace ws
 }  // namespace mus