| // 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 APPS_MOZART_SRC_VIEW_MANAGER_VIEW_STATE_H_ |
| #define APPS_MOZART_SRC_VIEW_MANAGER_VIEW_STATE_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "lib/ui/scenic/client/resources.h" |
| #include "lib/ui/views/cpp/formatting.h" |
| #include "lib/ui/views/fidl/views.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/bindings/binding.h" |
| #include "lib/fxl/macros.h" |
| #include "lib/fxl/memory/weak_ptr.h" |
| |
| namespace view_manager { |
| |
| class ViewRegistry; |
| class ViewImpl; |
| |
| // Describes the state of a particular view. |
| // This object is owned by the ViewRegistry that created it. |
| class ViewState : public ViewContainerState { |
| public: |
| enum { |
| // Properties may have changed and must be resolved. |
| INVALIDATION_PROPERTIES_CHANGED = 1u << 0, |
| |
| // View's parent changed, may require resolving properties. |
| INVALIDATION_PARENT_CHANGED = 1u << 1, |
| |
| // Next invalidation should carry all properties. |
| INVALIDATION_RESEND_PROPERTIES = 1u << 2, |
| |
| // View invalidation is in progress, awaiting a reply. |
| INVALIDATION_IN_PROGRESS = 1u << 3, |
| |
| // View invalidation was stalled because the view took too long to |
| // respond before a subsequent invalidation was triggered so it must |
| // be rescheduled. |
| INVALIDATION_STALLED = 1u << 4, |
| }; |
| |
| ViewState(ViewRegistry* registry, |
| mozart::ViewTokenPtr view_token, |
| fidl::InterfaceRequest<mozart::View> view_request, |
| mozart::ViewListenerPtr view_listener, |
| scenic_lib::Session* session, |
| const std::string& label); |
| ~ViewState() override; |
| |
| fxl::WeakPtr<ViewState> GetWeakPtr() { return weak_factory_.GetWeakPtr(); } |
| |
| // Gets the token used to refer to this view globally. |
| // Caller does not obtain ownership of the token. |
| const mozart::ViewTokenPtr& view_token() const { return view_token_; } |
| |
| // Gets the view listener interface, never null. |
| // Caller does not obtain ownership of the view listener. |
| const mozart::ViewListenerPtr& view_listener() const { |
| return view_listener_; |
| } |
| |
| // Gets the view's attachment point. |
| scenic_lib::EntityNode& top_node() { return top_node_; } |
| |
| // Gets or sets the view stub which links this view into the |
| // view hierarchy, or null if the view isn't linked anywhere. |
| ViewStub* view_stub() const { return view_stub_; } |
| void set_view_stub(ViewStub* view_stub) { view_stub_ = view_stub; } |
| |
| // Gets the properties the view was asked to apply, after applying |
| // any inherited properties from the container, or null if none set. |
| // This value is preserved across reparenting. |
| const mozart::ViewPropertiesPtr& issued_properties() const { |
| return issued_properties_; |
| } |
| |
| // Sets the requested properties. |
| // Sets |issued_properties_valid()| to true if |properties| is not null. |
| void IssueProperties(mozart::ViewPropertiesPtr properties); |
| |
| // Gets or sets flags describing the invalidation state of the view. |
| uint32_t invalidation_flags() const { return invalidation_flags_; } |
| void set_invalidation_flags(uint32_t value) { invalidation_flags_ = value; } |
| |
| // Binds the |ViewOwner| interface to the view which has the effect of |
| // tying the view's lifetime to that of the owner's pipe. |
| void BindOwner(fidl::InterfaceRequest<mozart::ViewOwner> view_owner_request); |
| |
| // Unbinds the view from its owner. |
| void ReleaseOwner(); |
| |
| ViewState* AsViewState() override; |
| |
| const std::string& label() const { return label_; } |
| const std::string& FormattedLabel() const override; |
| |
| const FocusChain* focus_chain() { |
| // TODO(jpoichet) Focus chain should be built when view tree is modified |
| // or by a focus chain management API. |
| RebuildFocusChain(); |
| return focus_chain_.get(); |
| } |
| |
| app::ServiceProvider* GetServiceProviderIfSupports(std::string service_name); |
| |
| void SetServiceProvider( |
| fidl::InterfaceHandle<app::ServiceProvider> service_provider, |
| fidl::Array<fidl::String> service_names); |
| |
| private: |
| void RebuildFocusChain(); |
| |
| mozart::ViewTokenPtr view_token_; |
| mozart::ViewListenerPtr view_listener_; |
| scenic_lib::EntityNode top_node_; |
| |
| const std::string label_; |
| mutable std::string formatted_label_cache_; |
| |
| std::unique_ptr<ViewImpl> impl_; |
| fidl::Binding<mozart::View> view_binding_; |
| fidl::Binding<mozart::ViewOwner> owner_binding_; |
| |
| ViewStub* view_stub_ = nullptr; |
| |
| mozart::ViewPropertiesPtr issued_properties_; |
| |
| uint32_t invalidation_flags_ = 0u; |
| |
| std::unique_ptr<FocusChain> focus_chain_; |
| app::ServiceProviderPtr service_provider_; |
| fidl::Array<fidl::String> service_names_; |
| |
| fxl::WeakPtrFactory<ViewState> weak_factory_; // must be last |
| |
| FXL_DISALLOW_COPY_AND_ASSIGN(ViewState); |
| }; |
| |
| } // namespace view_manager |
| |
| #endif // APPS_MOZART_SRC_VIEW_MANAGER_VIEW_STATE_H_ |