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// Copyright 2015 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 "components/mus/focus_controller.h"
#include "components/mus/focus_controller_delegate.h"
#include "components/mus/server_view.h"
#include "components/mus/test_server_view_delegate.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace view_manager {
namespace {
class TestFocusControllerDelegate : public FocusControllerDelegate {
public:
TestFocusControllerDelegate()
: change_count_(0u),
old_focused_view_(nullptr),
new_focused_view_(nullptr) {}
void ClearAll() {
change_count_ = 0u;
old_focused_view_ = nullptr;
new_focused_view_ = nullptr;
}
size_t change_count() const { return change_count_; }
ServerView* old_focused_view() { return old_focused_view_; }
ServerView* new_focused_view() { return new_focused_view_; }
private:
// FocusControllerDelegate:
void OnFocusChanged(ServerView* old_focused_view,
ServerView* new_focused_view) override {
change_count_++;
old_focused_view_ = old_focused_view;
new_focused_view_ = new_focused_view;
}
size_t change_count_;
ServerView* old_focused_view_;
ServerView* new_focused_view_;
DISALLOW_COPY_AND_ASSIGN(TestFocusControllerDelegate);
};
} // namespace
TEST(FocusControllerTest, Basic) {
TestServerViewDelegate server_view_delegate;
ServerView root(&server_view_delegate, ViewId());
server_view_delegate.set_root_view(&root);
root.SetVisible(true);
ServerView child(&server_view_delegate, ViewId());
child.SetVisible(true);
root.Add(&child);
ServerView child_child(&server_view_delegate, ViewId());
child_child.SetVisible(true);
child.Add(&child_child);
TestFocusControllerDelegate focus_delegate;
FocusController focus_controller(&focus_delegate);
focus_controller.SetFocusedView(&child_child);
EXPECT_EQ(0u, focus_delegate.change_count());
// Remove the ancestor of the focused view, focus should go to the |root|.
root.Remove(&child);
EXPECT_EQ(1u, focus_delegate.change_count());
EXPECT_EQ(&root, focus_delegate.new_focused_view());
EXPECT_EQ(&child_child, focus_delegate.old_focused_view());
focus_delegate.ClearAll();
// Make the focused view invisible. Focus is lost in this case (as no one
// to give focus to).
root.SetVisible(false);
EXPECT_EQ(1u, focus_delegate.change_count());
EXPECT_EQ(nullptr, focus_delegate.new_focused_view());
EXPECT_EQ(&root, focus_delegate.old_focused_view());
focus_delegate.ClearAll();
// Go back to initial state and focus |child_child|.
root.SetVisible(true);
root.Add(&child);
focus_controller.SetFocusedView(&child_child);
EXPECT_EQ(0u, focus_delegate.change_count());
// Hide the focused view, focus should go to parent.
child_child.SetVisible(false);
EXPECT_EQ(1u, focus_delegate.change_count());
EXPECT_EQ(&child, focus_delegate.new_focused_view());
EXPECT_EQ(&child_child, focus_delegate.old_focused_view());
focus_delegate.ClearAll();
child_child.SetVisible(true);
focus_controller.SetFocusedView(&child_child);
EXPECT_EQ(0u, focus_delegate.change_count());
// Hide the parent of the focused view.
child.SetVisible(false);
EXPECT_EQ(1u, focus_delegate.change_count());
EXPECT_EQ(&root, focus_delegate.new_focused_view());
EXPECT_EQ(&child_child, focus_delegate.old_focused_view());
focus_delegate.ClearAll();
}
} // namespace view_manager
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