components/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 "components/view_manager/window_manager_access_policy.h"
   6
   7 #include "components/view_manager/access_policy_delegate.h"
   8 #include "components/view_manager/server_view.h"
   9
  10 namespace view_manager {
  11
  12 // TODO(sky): document why this differs from default for each case. Maybe want
  13 // to subclass DefaultAccessPolicy.
  14
  15 WindowManagerAccessPolicy::WindowManagerAccessPolicy(
  16     mojo::ConnectionSpecificId connection_id,
  17     AccessPolicyDelegate* delegate)
  18     : connection_id_(connection_id), delegate_(delegate) {
  19 }
  20
  21 WindowManagerAccessPolicy::~WindowManagerAccessPolicy() {
  22 }
  23
  24 bool WindowManagerAccessPolicy::CanRemoveViewFromParent(
  25     const ServerView* view) const {
  26   return true;
  27 }
  28
  29 bool WindowManagerAccessPolicy::CanAddView(const ServerView* parent,
  30                                            const ServerView* child) const {
  31   return true;
  32 }
  33
  34 bool WindowManagerAccessPolicy::CanReorderView(
  35     const ServerView* view,
  36     const ServerView* relative_view,
  37     mojo::OrderDirection direction) const {
  38   return true;
  39 }
  40
  41 bool WindowManagerAccessPolicy::CanDeleteView(const ServerView* view) const {
  42   return view->id().connection_id == connection_id_;
  43 }
  44
  45 bool WindowManagerAccessPolicy::CanGetViewTree(const ServerView* view) const {
  46   return view->id() != ClonedViewId();
  47 }
  48
  49 bool WindowManagerAccessPolicy::CanDescendIntoViewForViewTree(
  50     const ServerView* view) const {
  51   return view->id() != ClonedViewId();
  52 }
  53
  54 bool WindowManagerAccessPolicy::CanEmbed(const ServerView* view) const {
  55   return true;
  56 }
  57
  58 bool WindowManagerAccessPolicy::CanChangeViewVisibility(
  59     const ServerView* view) const {
  60   // The WindowManager can change the visibility of the root too.
  61   return view->id().connection_id == connection_id_ ||
  62       (view->GetRoot() == view);
  63 }
  64
  65 bool WindowManagerAccessPolicy::CanSetViewSurfaceId(
  66     const ServerView* view) const {
  67   if (delegate_->IsViewRootOfAnotherConnectionForAccessPolicy(view))
  68     return false;
  69   return view->id().connection_id == connection_id_ ||
  70          (delegate_->IsRootForAccessPolicy(view->id()));
  71 }
  72
  73 bool WindowManagerAccessPolicy::CanSetViewBounds(const ServerView* view) const {
  74   return view->id().connection_id == connection_id_;
  75 }
  76
  77 bool WindowManagerAccessPolicy::CanSetViewProperties(
  78     const ServerView* view) const {
  79   return view->id().connection_id == connection_id_;
  80 }
  81
  82 bool WindowManagerAccessPolicy::CanSetViewTextInputState(
  83     const ServerView* view) const {
  84   return view->id().connection_id == connection_id_;
  85 }
  86
  87 bool WindowManagerAccessPolicy::CanSetFocus(const ServerView* view) const {
  88   return true;
  89 }
  90
  91 bool WindowManagerAccessPolicy::ShouldNotifyOnHierarchyChange(
  92     const ServerView* view,
  93     const ServerView** new_parent,
  94     const ServerView** old_parent) const {
  95   if (view->id() == ClonedViewId())
  96     return false;
  97
  98   // Notify if we've already told the window manager about the view, or if we've
  99   // already told the window manager about the parent. The later handles the
 100   // case of a view that wasn't parented to the root getting added to the root.
 101   return IsViewKnown(view) || (*new_parent && IsViewKnown(*new_parent));
 102 }
 103
 104 const ServerView* WindowManagerAccessPolicy::GetViewForFocusChange(
 105     const ServerView* focused) {
 106   return focused;
 107 }
 108
 109 bool WindowManagerAccessPolicy::IsViewKnown(const ServerView* view) const {
 110   return delegate_->IsViewKnownForAccessPolicy(view);
 111 }
 112
 113 }  // namespace view_manager