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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/ash/editor_menu/utils/focus_search.h"
#include "ui/views/focus/focus_search.h"
namespace chromeos::editor_menu {
FocusSearch::FocusSearch(views::View* view,
const GetFocusableViewsCallback& callback)
: views::FocusSearch(/*root=*/view,
/*cycle=*/true,
/*accessibility_mode=*/true),
view_(view),
get_focusable_views_callback_(callback) {}
FocusSearch::~FocusSearch() = default;
views::View* FocusSearch::FindNextFocusableView(
views::View* starting_view,
SearchDirection search_direction,
TraversalDirection traversal_direction,
StartingViewPolicy check_starting_view,
AnchoredDialogPolicy can_go_into_anchored_dialog,
views::FocusTraversable** focus_traversable,
views::View** focus_traversable_view) {
DCHECK_EQ(root(), view_);
// The callback provided by |view_| polls the currently focusable views.
auto focusable_views = get_focusable_views_callback_.Run();
if (focusable_views.empty()) {
return nullptr;
}
int delta =
search_direction == FocusSearch::SearchDirection::kForwards ? 1 : -1;
int focusable_views_size = static_cast<int>(focusable_views.size());
for (int i = 0; i < focusable_views_size; ++i) {
// If current view from the set is found to be focused, return the view
// next (or previous) to it as next focusable view.
if (focusable_views[i] == starting_view) {
int next_index =
(i + delta + focusable_views_size) % focusable_views_size;
return focusable_views[next_index];
}
}
// Case when none of the views are already focused.
return (search_direction == FocusSearch::SearchDirection::kForwards)
? focusable_views.front()
: focusable_views.back();
}
views::FocusSearch* FocusSearch::GetFocusSearch() {
return this;
}
views::FocusTraversable* FocusSearch::GetFocusTraversableParent() {
return nullptr;
}
views::View* FocusSearch::GetFocusTraversableParentView() {
return nullptr;
}
} // namespace chromeos::editor_menu
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