blob: 9fa2b8b4f225259e1e9554bab846e0a3c893377d [file] [log] [blame]
// Copyright 2016 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.
#include <array>
#include <iosfwd>
#include <memory>
#include <unordered_map>
#include <vector>
#include <fuchsia/ui/viewsv1/cpp/fidl.h>
#include "garnet/bin/ui/view_manager/view_stub.h"
#include "lib/fxl/macros.h"
namespace view_manager {
class ViewState;
class ViewStub;
class ViewTreeState;
// Base class for views and view trees.
// This object is owned by the ViewRegistry that created it.
class ViewContainerState {
// Whether the View below us is connected.
enum ViewConnectionState { UNKNOWN, CONNECTED, DISCONNECTED };
struct ChildView {
// The ViewContainer we are attached to.
ViewContainerState* container = nullptr;
// Whether the View below us is connected.
ViewConnectionState view_connected = UNKNOWN;
ViewRegistry* view_registry = nullptr;
// If zero, then it's not attached.
uint32_t child_key = 0;
std::unique_ptr<scenic::Session> session;
std::unique_ptr<scenic::ImportNode> host_node;
scenic::ViewHolder view_holder;
std::array<float, 3> min_dimensions = {0, 0, 0};
std::array<float, 3> max_dimensions = {0, 0, 0};
std::array<float, 3> inset_min = {0, 0, 0};
std::array<float, 3> inset_max = {0, 0, 0};
static void OnScenicEvent(ChildView* session,
std::vector<fuchsia::ui::scenic::Event> events);
ViewContainerState(ViewRegistry* registry,
fuchsia::ui::scenic::Scenic* scenic);
// Gets or sets the view container listener.
::fuchsia::ui::viewsv1::ViewContainerListener* view_container_listener()
const {
return view_container_listener_.get();
void set_view_container_listener(
view_container_listener) {
view_container_listener_ = std::move(view_container_listener);
// The map of children, indexed by child key.
const std::unordered_map<uint32_t, std::unique_ptr<ChildView>>& children()
const {
return children_;
// Removes all children as a single operation.
void RemoveAllChildren();
// Transform the properties into a SendViewPropertiesCmd,
// and forward it to Scenic.
void SetChildProperties(
uint32_t child_key,
::fuchsia::ui::viewsv1::ViewPropertiesPtr child_properties);
// Dynamic type tests (ugh).
virtual ViewState* AsViewState();
virtual ViewTreeState* AsViewTreeState();
virtual const std::string& FormattedLabel() const = 0;
void AddChild(uint32_t child_key, zx::eventpair view_holder_token,
zx::eventpair host_import_token);
void RemoveChild(uint32_t child_key,
zx::eventpair transferred_view_holder_token);
virtual ~ViewContainerState();
ViewRegistry* view_registry_ = nullptr;
fuchsia::ui::scenic::Scenic* scenic_ = nullptr;
fuchsia::ui::viewsv1::ViewContainerListenerPtr view_container_listener_;
std::unordered_map<uint32_t, std::unique_ptr<ChildView>> children_;
std::ostream& operator<<(std::ostream& os, ViewContainerState* view_state);
} // namespace view_manager