| // Copyright 2015 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef GARNET_BIN_UI_VIEW_MANAGER_VIEW_TREE_STATE_H_ |
| #define GARNET_BIN_UI_VIEW_MANAGER_VIEW_TREE_STATE_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include <fuchsia/ui/views/cpp/fidl.h> |
| #include "garnet/bin/ui/view_manager/internal/view_inspector.h" |
| #include "garnet/bin/ui/view_manager/view_container_state.h" |
| #include "lib/fidl/cpp/binding.h" |
| #include "lib/fxl/macros.h" |
| #include "lib/fxl/memory/weak_ptr.h" |
| #include "lib/ui/views/cpp/formatting.h" |
| |
| namespace view_manager { |
| |
| class ViewRegistry; |
| class ViewState; |
| class ViewStub; |
| class ViewTreeImpl; |
| |
| // Describes the state of a particular view tree. |
| // This object is owned by the ViewRegistry that created it. |
| class ViewTreeState : public ViewContainerState { |
| public: |
| enum { |
| // Some of the tree's views have been invalidated. |
| INVALIDATION_VIEWS_INVALIDATED = 1u << 0, |
| }; |
| |
| ViewTreeState(ViewRegistry* registry, |
| ::fuchsia::ui::viewsv1::ViewTreeToken view_tree_token, |
| fidl::InterfaceRequest<::fuchsia::ui::viewsv1::ViewTree> |
| view_tree_request, |
| ::fuchsia::ui::viewsv1::ViewTreeListenerPtr view_tree_listener, |
| const std::string& label); |
| ~ViewTreeState() override; |
| |
| fxl::WeakPtr<ViewTreeState> GetWeakPtr() { |
| return weak_factory_.GetWeakPtr(); |
| } |
| |
| // Gets the token used to refer to this view tree globally. |
| ::fuchsia::ui::viewsv1::ViewTreeToken view_tree_token() const { |
| return view_tree_token_; |
| } |
| |
| // Gets the view tree listener interface, never null. |
| // Caller does not obtain ownership of the view tree listener. |
| const ::fuchsia::ui::viewsv1::ViewTreeListenerPtr& view_tree_listener() |
| const { |
| return view_tree_listener_; |
| } |
| |
| // Gets the view tree's root view. |
| ViewStub* GetRoot() const; |
| |
| // Gets or sets flags describing the invalidation state of the view tree. |
| uint32_t invalidation_flags() const { return invalidation_flags_; } |
| void set_invalidation_flags(uint32_t value) { invalidation_flags_ = value; } |
| |
| ViewTreeState* AsViewTreeState() override; |
| |
| const std::string& label() const { return label_; } |
| const std::string& FormattedLabel() const override; |
| |
| void RequestFocus(ViewStub* child_stub); |
| const FocusChain* focus_chain(); |
| |
| private: |
| ::fuchsia::ui::viewsv1::ViewTreeToken view_tree_token_; |
| ::fuchsia::ui::viewsv1::ViewTreeListenerPtr view_tree_listener_; |
| |
| const std::string label_; |
| mutable std::string formatted_label_cache_; |
| |
| std::unique_ptr<ViewTreeImpl> impl_; |
| fidl::Binding<::fuchsia::ui::viewsv1::ViewTree> view_tree_binding_; |
| |
| uint32_t invalidation_flags_ = 0u; |
| |
| fxl::WeakPtr<ViewStub> focused_view_; |
| |
| fxl::WeakPtrFactory<ViewTreeState> weak_factory_; // must be last |
| |
| FXL_DISALLOW_COPY_AND_ASSIGN(ViewTreeState); |
| }; |
| |
| } // namespace view_manager |
| |
| #endif // GARNET_BIN_UI_VIEW_MANAGER_VIEW_TREE_STATE_H_ |