mojo/services/view_manager/window_manager_access_policy.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "mojo/services/view_manager/window_manager_access_policy.h"
   6
   7 #include "mojo/services/view_manager/access_policy_delegate.h"
   8 #include "mojo/services/view_manager/server_view.h"
   9
  10 namespace mojo {
  11 namespace service {
  12
  13 // TODO(sky): document why this differs from default for each case. Maybe want
  14 // to subclass DefaultAccessPolicy.
  15
  16 WindowManagerAccessPolicy::WindowManagerAccessPolicy(
  17     ConnectionSpecificId connection_id,
  18     AccessPolicyDelegate* delegate)
  19     : connection_id_(connection_id),
  20       delegate_(delegate) {
  21 }
  22
  23 WindowManagerAccessPolicy::~WindowManagerAccessPolicy() {
  24 }
  25
  26 bool WindowManagerAccessPolicy::CanRemoveViewFromParent(
  27     const ServerView* view) const {
  28   return true;
  29 }
  30
  31 bool WindowManagerAccessPolicy::CanAddView(const ServerView* parent,
  32                                            const ServerView* child) const {
  33   return true;
  34 }
  35
  36 bool WindowManagerAccessPolicy::CanReorderView(const ServerView* view,
  37                                                const ServerView* relative_view,
  38                                                OrderDirection direction) const {
  39   return true;
  40 }
  41
  42 bool WindowManagerAccessPolicy::CanDeleteView(const ServerView* view) const {
  43   return view->id().connection_id == connection_id_;
  44 }
  45
  46 bool WindowManagerAccessPolicy::CanGetViewTree(const ServerView* view) const {
  47   return true;
  48 }
  49
  50 bool WindowManagerAccessPolicy::CanDescendIntoViewForViewTree(
  51     const ServerView* view) const {
  52   return true;
  53 }
  54
  55 bool WindowManagerAccessPolicy::CanEmbed(const ServerView* view) const {
  56   return view->id().connection_id == connection_id_;
  57 }
  58
  59 bool WindowManagerAccessPolicy::CanChangeViewVisibility(
  60     const ServerView* view) const {
  61   return view->id().connection_id == connection_id_;
  62 }
  63
  64 bool WindowManagerAccessPolicy::CanSetViewContents(
  65     const ServerView* view) const {
  66   if (delegate_->IsViewRootOfAnotherConnectionForAccessPolicy(view))
  67     return false;
  68   return view->id().connection_id == connection_id_ ||
  69          (delegate_->GetRootsForAccessPolicy().count(
  70               ViewIdToTransportId(view->id())) > 0);
  71 }
  72
  73 bool WindowManagerAccessPolicy::CanSetViewBounds(const ServerView* view) const {
  74   return view->id().connection_id == connection_id_;
  75 }
  76
  77 bool WindowManagerAccessPolicy::ShouldNotifyOnHierarchyChange(
  78     const ServerView* view,
  79     const ServerView** new_parent,
  80     const ServerView** old_parent) const {
  81   // Notify if we've already told the window manager about the view, or if we've
  82   // already told the window manager about the parent. The later handles the
  83   // case of a view that wasn't parented to the root getting added to the root.
  84   return IsViewKnown(view) || (*new_parent && IsViewKnown(*new_parent));
  85 }
  86
  87 bool WindowManagerAccessPolicy::IsViewKnown(const ServerView* view) const {
  88   return delegate_->IsViewKnownForAccessPolicy(view);
  89 }
  90
  91 }  // namespace service
  92 }  // namespace mojo