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ax_event_counter.cc
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ax_event_counter.cc
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// Copyright 2020 The Chromium 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 <utility>
#include "ui/views/test/ax_event_counter.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/views/view.h"
namespace views {
namespace test {
AXEventCounter::AXEventCounter(views::AXEventManager* event_manager) {
tree_observation_.Observe(event_manager);
}
AXEventCounter::~AXEventCounter() = default;
void AXEventCounter::OnViewEvent(views::View* view,
ax::mojom::Event event_type) {
++event_counts_[event_type];
// TODO(accessibility): There are a non-trivial number of events, mostly
// kChildrenChanged, being fired during the creation process. When this
// occurs calling GetAccessibleNodeData() on the related View can lead
// to null dereference errors and at least one pure-virtual-function call.
// We should either fix those errors or stop firing the events. For now,
// require the presence of a Widget to count events by role.
if (view->GetWidget()) {
ui::AXNodeData node_data;
view->GetAccessibleNodeData(&node_data);
++event_counts_for_role_[std::make_pair(event_type, node_data.role)];
}
if (run_loop_ && event_type == wait_for_event_type_) {
wait_for_event_type_ = ax::mojom::Event::kNone;
run_loop_->Quit();
}
}
int AXEventCounter::GetCount(ax::mojom::Event event_type) {
return event_counts_[event_type];
}
int AXEventCounter::GetCount(ax::mojom::Event event_type,
ax::mojom::Role role) {
return event_counts_for_role_[std::make_pair(event_type, role)];
}
void AXEventCounter::ResetAllCounts() {
event_counts_.clear();
event_counts_for_role_.clear();
}
void AXEventCounter::WaitForEvent(ax::mojom::Event event_type) {
wait_for_event_type_ = event_type;
base::RunLoop run_loop;
run_loop_ = &run_loop;
run_loop_->Run();
run_loop_ = nullptr;
}
} // namespace test
} // namespace views