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| 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/default_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 view_manager { |
| 11 |
| 12 DefaultAccessPolicy::DefaultAccessPolicy( |
| 13 mojo::ConnectionSpecificId connection_id, |
| 14 AccessPolicyDelegate* delegate) |
| 15 : connection_id_(connection_id), delegate_(delegate) { |
| 16 } |
| 17 |
| 18 DefaultAccessPolicy::~DefaultAccessPolicy() { |
| 19 } |
| 20 |
| 21 bool DefaultAccessPolicy::CanRemoveViewFromParent( |
| 22 const ServerView* view) const { |
| 23 if (!WasCreatedByThisConnection(view)) |
| 24 return false; // Can only unparent views we created. |
| 25 |
| 26 return delegate_->IsRootForAccessPolicy(view->parent()->id()) || |
| 27 WasCreatedByThisConnection(view->parent()); |
| 28 } |
| 29 |
| 30 bool DefaultAccessPolicy::CanAddView(const ServerView* parent, |
| 31 const ServerView* child) const { |
| 32 return WasCreatedByThisConnection(child) && |
| 33 (delegate_->IsRootForAccessPolicy(parent->id()) || |
| 34 (WasCreatedByThisConnection(parent) && |
| 35 !delegate_->IsViewRootOfAnotherConnectionForAccessPolicy(parent))); |
| 36 } |
| 37 |
| 38 bool DefaultAccessPolicy::CanReorderView(const ServerView* view, |
| 39 const ServerView* relative_view, |
| 40 mojo::OrderDirection direction) const { |
| 41 return WasCreatedByThisConnection(view) && |
| 42 WasCreatedByThisConnection(relative_view); |
| 43 } |
| 44 |
| 45 bool DefaultAccessPolicy::CanDeleteView(const ServerView* view) const { |
| 46 return WasCreatedByThisConnection(view); |
| 47 } |
| 48 |
| 49 bool DefaultAccessPolicy::CanGetViewTree(const ServerView* view) const { |
| 50 return WasCreatedByThisConnection(view) || |
| 51 delegate_->IsRootForAccessPolicy(view->id()); |
| 52 } |
| 53 |
| 54 bool DefaultAccessPolicy::CanDescendIntoViewForViewTree( |
| 55 const ServerView* view) const { |
| 56 return (WasCreatedByThisConnection(view) && |
| 57 !delegate_->IsViewRootOfAnotherConnectionForAccessPolicy(view)) || |
| 58 delegate_->IsRootForAccessPolicy(view->id()); |
| 59 } |
| 60 |
| 61 bool DefaultAccessPolicy::CanEmbed(const ServerView* view) const { |
| 62 return WasCreatedByThisConnection(view); |
| 63 } |
| 64 |
| 65 bool DefaultAccessPolicy::CanChangeViewVisibility( |
| 66 const ServerView* view) const { |
| 67 return WasCreatedByThisConnection(view) || |
| 68 delegate_->IsRootForAccessPolicy(view->id()); |
| 69 } |
| 70 |
| 71 bool DefaultAccessPolicy::CanSetViewSurfaceId(const ServerView* view) const { |
| 72 // Once a view embeds another app, the embedder app is no longer able to |
| 73 // call SetViewSurfaceId() - this ability is transferred to the embedded app. |
| 74 if (delegate_->IsViewRootOfAnotherConnectionForAccessPolicy(view)) |
| 75 return false; |
| 76 return WasCreatedByThisConnection(view) || |
| 77 delegate_->IsRootForAccessPolicy(view->id()); |
| 78 } |
| 79 |
| 80 bool DefaultAccessPolicy::CanSetViewBounds(const ServerView* view) const { |
| 81 return WasCreatedByThisConnection(view); |
| 82 } |
| 83 |
| 84 bool DefaultAccessPolicy::CanSetViewProperties(const ServerView* view) const { |
| 85 return WasCreatedByThisConnection(view); |
| 86 } |
| 87 |
| 88 bool DefaultAccessPolicy::ShouldNotifyOnHierarchyChange( |
| 89 const ServerView* view, |
| 90 const ServerView** new_parent, |
| 91 const ServerView** old_parent) const { |
| 92 if (!WasCreatedByThisConnection(view)) |
| 93 return false; |
| 94 |
| 95 if (*new_parent && !WasCreatedByThisConnection(*new_parent) && |
| 96 !delegate_->IsRootForAccessPolicy((*new_parent)->id())) { |
| 97 *new_parent = NULL; |
| 98 } |
| 99 |
| 100 if (*old_parent && !WasCreatedByThisConnection(*old_parent) && |
| 101 !delegate_->IsRootForAccessPolicy((*old_parent)->id())) { |
| 102 *old_parent = NULL; |
| 103 } |
| 104 return true; |
| 105 } |
| 106 |
| 107 bool DefaultAccessPolicy::WasCreatedByThisConnection( |
| 108 const ServerView* view) const { |
| 109 return view->id().connection_id == connection_id_; |
| 110 } |
| 111 |
| 112 } // namespace view_manager |
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