components/mus/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 "components/mus/window_manager_access_policy.h"
   6
   7 #include "components/mus/access_policy_delegate.h"
   8 #include "components/mus/server_view.h"
   9
  10 namespace mus {
  11
  12 // TODO(sky): document why this differs from default for each case. Maybe want
  13 // to subclass DefaultAccessPolicy.
  14
  15 WindowManagerAccessPolicy::WindowManagerAccessPolicy(
  16     ConnectionSpecificId connection_id,
  17     AccessPolicyDelegate* delegate)
  18     : connection_id_(connection_id), delegate_(delegate) {}
  19
  20 WindowManagerAccessPolicy::~WindowManagerAccessPolicy() {}
  21
  22 bool WindowManagerAccessPolicy::CanRemoveViewFromParent(
  23     const ServerView* view) const {
  24   return true;
  25 }
  26
  27 bool WindowManagerAccessPolicy::CanAddView(const ServerView* parent,
  28                                            const ServerView* child) const {
  29   return true;
  30 }
  31
  32 bool WindowManagerAccessPolicy::CanReorderView(
  33     const ServerView* view,
  34     const ServerView* relative_view,
  35     mojo::OrderDirection direction) const {
  36   return true;
  37 }
  38
  39 bool WindowManagerAccessPolicy::CanDeleteView(const ServerView* view) const {
  40   return view->id().connection_id == connection_id_;
  41 }
  42
  43 bool WindowManagerAccessPolicy::CanGetViewTree(const ServerView* view) const {
  44   return true;
  45 }
  46
  47 bool WindowManagerAccessPolicy::CanDescendIntoViewForViewTree(
  48     const ServerView* view) const {
  49   return true;
  50 }
  51
  52 bool WindowManagerAccessPolicy::CanEmbed(const ServerView* view,
  53                                          uint32_t policy_bitmask) const {
  54   return !delegate_->IsRootForAccessPolicy(view->id());
  55 }
  56
  57 bool WindowManagerAccessPolicy::CanChangeViewVisibility(
  58     const ServerView* view) const {
  59   // The WindowManager can change the visibility of the root too.
  60   return view->id().connection_id == connection_id_ ||
  61          (view->GetRoot() == view);
  62 }
  63
  64 bool WindowManagerAccessPolicy::CanSetViewSurfaceId(
  65     const ServerView* view) const {
  66   if (delegate_->IsViewRootOfAnotherConnectionForAccessPolicy(view))
  67     return false;
  68   return view->id().connection_id == connection_id_ ||
  69          (delegate_->IsRootForAccessPolicy(view->id()));
  70 }
  71
  72 bool WindowManagerAccessPolicy::CanSetViewBounds(const ServerView* view) const {
  73   return view->id().connection_id == connection_id_;
  74 }
  75
  76 bool WindowManagerAccessPolicy::CanSetViewProperties(
  77     const ServerView* view) const {
  78   return view->id().connection_id == connection_id_;
  79 }
  80
  81 bool WindowManagerAccessPolicy::CanSetViewTextInputState(
  82     const ServerView* view) const {
  83   return view->id().connection_id == connection_id_;
  84 }
  85
  86 bool WindowManagerAccessPolicy::CanSetFocus(const ServerView* view) const {
  87   return true;
  88 }
  89
  90 bool WindowManagerAccessPolicy::ShouldNotifyOnHierarchyChange(
  91     const ServerView* view,
  92     const ServerView** new_parent,
  93     const ServerView** old_parent) const {
  94   // Notify if we've already told the window manager about the view, or if we've
  95   // already told the window manager about the parent. The later handles the
  96   // case of a view that wasn't parented to the root getting added to the root.
  97   return IsViewKnown(view) || (*new_parent && IsViewKnown(*new_parent));
  98 }
  99
 100 const ServerView* WindowManagerAccessPolicy::GetViewForFocusChange(
 101     const ServerView* focused) {
 102   return focused;
 103 }
 104
 105 bool WindowManagerAccessPolicy::IsViewKnown(const ServerView* view) const {
 106   return delegate_->IsViewKnownForAccessPolicy(view);
 107 }
 108
 109 }  // namespace mus