| // Copyright 2017 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 PERIDOT_LIB_FIDL_VIEW_HOST_H_ |
| #define PERIDOT_LIB_FIDL_VIEW_HOST_H_ |
| |
| #include <map> |
| #include <memory> |
| |
| #include <fuchsia/ui/viewsv1/cpp/fidl.h> |
| #include <fuchsia/ui/viewsv1token/cpp/fidl.h> |
| #include <lib/fxl/macros.h> |
| #include <lib/ui/base_view/cpp/v1_base_view.h> |
| #include <zx/eventpair.h> |
| |
| namespace modular { |
| |
| // A class that allows modules to display the UI of their child |
| // modules, without displaying any UI on their own. Used for modules |
| // that play the role of a view controller (aka quarterback, recipe). |
| // It supports to embed views of *multiple* children, which are laid |
| // out horizontally. |
| class ViewHost : public scenic::V1BaseView { |
| public: |
| explicit ViewHost(scenic::ViewContext view_context); |
| ~ViewHost() override; |
| |
| // Connects one more view. Calling this method multiple times adds |
| // multiple views and lays them out horizontally next to each other. |
| // This is experimental to establish data flow patterns in toy |
| // applications and can be changed or extended as needed. |
| void ConnectView(zx::eventpair view_holder_token); |
| void ConnectView( |
| fidl::InterfaceHandle<fuchsia::ui::viewsv1token::ViewOwner> view_owner); |
| |
| private: |
| struct ViewData; |
| |
| // |scenic::V1BaseView| |
| void OnPropertiesChanged( |
| fuchsia::ui::viewsv1::ViewProperties old_properties) override; |
| void OnChildUnavailable(uint32_t child_key) override; |
| |
| void UpdateScene(); |
| |
| scenic::EntityNode container_node_; |
| |
| std::map<uint32_t, std::unique_ptr<ViewData>> views_; |
| uint32_t next_child_key_{1u}; |
| |
| FXL_DISALLOW_COPY_AND_ASSIGN(ViewHost); |
| }; |
| |
| } // namespace modular |
| |
| #endif // PERIDOT_LIB_FIDL_VIEW_HOST_H_ |