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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FUCHSIA_WEB_WEBENGINE_BROWSER_FAKE_SEMANTIC_TREE_H_
#define FUCHSIA_WEB_WEBENGINE_BROWSER_FAKE_SEMANTIC_TREE_H_
#include <fuchsia/accessibility/semantics/cpp/fidl.h>
#include <fuchsia/accessibility/semantics/cpp/fidl_test_base.h>
#include <lib/fidl/cpp/binding.h>
#include <unordered_map>
#include "base/functional/callback.h"
#include "base/strings/string_piece.h"
class FakeSemanticTree
: public fuchsia::accessibility::semantics::testing::SemanticTree_TestBase {
public:
FakeSemanticTree();
~FakeSemanticTree() override;
FakeSemanticTree(const FakeSemanticTree&) = delete;
FakeSemanticTree& operator=(const FakeSemanticTree&) = delete;
// Binds |semantic_tree_request| to |this|.
void Bind(
fidl::InterfaceRequest<fuchsia::accessibility::semantics::SemanticTree>
semantic_tree_request);
// Checks that the tree is complete and that there are no dangling nodes by
// traversing the tree starting at the root. Keeps track of how many nodes are
// visited to make sure there aren't dangling nodes in |nodes_|.
bool IsTreeValid(fuchsia::accessibility::semantics::Node* node,
size_t* tree_size);
// Disconnects the SemanticTree binding.
void Disconnect();
void RunUntilNodeCountAtLeast(size_t count);
void RunUntilNodeWithLabelIsInTree(base::StringPiece label);
void RunUntilCommitCountIs(size_t count);
void RunUntilConditionIsTrue(base::RepeatingCallback<bool()> condition);
void SetNodeUpdatedCallback(uint32_t node_id,
base::OnceClosure node_updated_callback);
fuchsia::accessibility::semantics::Node* GetNodeWithId(uint32_t id);
// For the functions below, it is possible there are multiple nodes with the
// same identifier.
// Get the the first node in the document matching |label|, using a
// depth-first search.
fuchsia::accessibility::semantics::Node* GetNodeFromLabel(
base::StringPiece label);
fuchsia::accessibility::semantics::Node* GetNodeFromRole(
fuchsia::accessibility::semantics::Role role);
size_t tree_size() const { return nodes_.size(); }
void Clear();
size_t num_delete_calls() const { return num_delete_calls_; }
size_t num_update_calls() const { return num_update_calls_; }
size_t num_commit_calls() const { return num_commit_calls_; }
// fuchsia::accessibility::semantics::SemanticTree implementation.
void UpdateSemanticNodes(
std::vector<fuchsia::accessibility::semantics::Node> nodes) final;
void DeleteSemanticNodes(std::vector<uint32_t> node_ids) final;
void CommitUpdates(CommitUpdatesCallback callback) final;
void NotImplemented_(const std::string& name) final;
private:
// Get the first node matching |label|, in the subtree rooted at |node|, using
// a depth first search.
fuchsia::accessibility::semantics::Node* GetNodeFromLabelRecursive(
fuchsia::accessibility::semantics::Node& node,
base::StringPiece label);
fidl::Binding<fuchsia::accessibility::semantics::SemanticTree>
semantic_tree_binding_;
std::unordered_map<uint32_t, fuchsia::accessibility::semantics::Node> nodes_;
base::RepeatingClosure on_commit_updates_;
uint32_t node_wait_id_;
base::OnceClosure on_node_updated_callback_;
size_t num_delete_calls_ = 0;
size_t num_update_calls_ = 0;
size_t num_commit_calls_ = 0;
};
#endif // FUCHSIA_WEB_WEBENGINE_BROWSER_FAKE_SEMANTIC_TREE_H_