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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <gtest/gtest.h>
#include "../FocusResolver.h"
#define ASSERT_FOCUS_CHANGE(_changes, _oldFocus, _newFocus) \
{ \
ASSERT_EQ(_oldFocus, _changes->oldFocus); \
ASSERT_EQ(_newFocus, _changes->newFocus); \
}
// atest inputflinger_tests:FocusResolverTest
using android::gui::FocusRequest;
using android::gui::WindowInfoHandle;
namespace android::inputdispatcher {
namespace {
class FakeWindowHandle : public WindowInfoHandle {
public:
FakeWindowHandle(const std::string& name, const sp<IBinder>& token, bool focusable,
bool visible) {
mInfo.token = token;
mInfo.name = name;
setFocusable(focusable);
setVisible(visible);
}
void setFocusable(bool focusable) {
mInfo.setInputConfig(gui::WindowInfo::InputConfig::NOT_FOCUSABLE, !focusable);
}
void setVisible(bool visible) {
mInfo.setInputConfig(gui::WindowInfo::InputConfig::NOT_VISIBLE, !visible);
}
};
} // namespace
TEST(FocusResolverTest, SetFocusedWindow) {
sp<IBinder> focusableWindowToken = sp<BBinder>::make();
sp<IBinder> invisibleWindowToken = sp<BBinder>::make();
sp<IBinder> unfocusableWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
windows.push_back(sp<FakeWindowHandle>::make("Focusable", focusableWindowToken,
/*focusable=*/true, /*visible=*/true));
windows.push_back(sp<FakeWindowHandle>::make("Invisible", invisibleWindowToken,
/*focusable=*/true, /*visible=*/false));
windows.push_back(sp<FakeWindowHandle>::make("unfocusable", unfocusableWindowToken,
/*focusable=*/false, /*visible=*/true));
// focusable window can get focused
FocusRequest request;
request.displayId = 42;
request.token = focusableWindowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ focusableWindowToken);
ASSERT_EQ(request.displayId, changes->displayId);
// invisible window cannot get focused
request.token = invisibleWindowToken;
changes = focusResolver.setFocusedWindow(request, windows);
ASSERT_EQ(focusableWindowToken, changes->oldFocus);
ASSERT_EQ(nullptr, changes->newFocus);
ASSERT_FOCUS_CHANGE(changes, /*from*/ focusableWindowToken, /*to*/ nullptr);
// unfocusableWindowToken window cannot get focused
request.token = unfocusableWindowToken;
changes = focusResolver.setFocusedWindow(request, windows);
ASSERT_FALSE(changes);
}
TEST(FocusResolverTest, RemoveFocusFromFocusedWindow) {
sp<IBinder> focusableWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
windows.push_back(sp<FakeWindowHandle>::make("Focusable", focusableWindowToken,
/*focusable=*/true, /*visible=*/true));
FocusRequest request;
request.displayId = 42;
request.token = focusableWindowToken;
FocusResolver focusResolver;
// Focusable window gets focus.
request.token = focusableWindowToken;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_FOCUS_CHANGE(changes, nullptr, focusableWindowToken);
// Window token of a request is null, focus should be revoked.
request.token = NULL;
changes = focusResolver.setFocusedWindow(request, windows);
ASSERT_EQ(focusableWindowToken, changes->oldFocus);
ASSERT_EQ(nullptr, changes->newFocus);
ASSERT_FOCUS_CHANGE(changes, focusableWindowToken, nullptr);
}
TEST(FocusResolverTest, SetFocusedMirroredWindow) {
sp<IBinder> focusableWindowToken = sp<BBinder>::make();
sp<IBinder> invisibleWindowToken = sp<BBinder>::make();
sp<IBinder> unfocusableWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
windows.push_back(sp<FakeWindowHandle>::make("Mirror1", focusableWindowToken,
/*focusable=*/true, /*visible=*/true));
windows.push_back(sp<FakeWindowHandle>::make("Mirror1", focusableWindowToken,
/*focusable=*/true, /*visible=*/true));
windows.push_back(sp<FakeWindowHandle>::make("Mirror2Visible", invisibleWindowToken,
/*focusable=*/true, /*visible=*/true));
windows.push_back(sp<FakeWindowHandle>::make("Mirror2Invisible", invisibleWindowToken,
/*focusable=*/true, /*visible=*/false));
windows.push_back(sp<FakeWindowHandle>::make("Mirror3Focusable", unfocusableWindowToken,
/*focusable=*/true, /*visible=*/true));
windows.push_back(sp<FakeWindowHandle>::make("Mirror3Unfocusable", unfocusableWindowToken,
/*focusable=*/false, /*visible=*/true));
// mirrored window can get focused
FocusRequest request;
request.displayId = 42;
request.token = focusableWindowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ focusableWindowToken);
// mirrored window with one visible window can get focused
request.token = invisibleWindowToken;
changes = focusResolver.setFocusedWindow(request, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ focusableWindowToken, /*to*/ invisibleWindowToken);
// mirrored window with one or more unfocusable window cannot get focused
request.token = unfocusableWindowToken;
changes = focusResolver.setFocusedWindow(request, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ invisibleWindowToken, /*to*/ nullptr);
}
TEST(FocusResolverTest, SetInputWindows) {
sp<IBinder> focusableWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
sp<FakeWindowHandle> window =
sp<FakeWindowHandle>::make("Focusable", focusableWindowToken, /*focusable=*/true,
/*visible=*/true);
windows.push_back(window);
// focusable window can get focused
FocusRequest request;
request.displayId = 42;
request.token = focusableWindowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_EQ(focusableWindowToken, changes->newFocus);
// Window visibility changes and the window loses focus
window->setVisible(false);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ focusableWindowToken, /*to*/ nullptr);
}
TEST(FocusResolverTest, FocusRequestsCanBePending) {
sp<IBinder> invisibleWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
sp<FakeWindowHandle> invisibleWindow =
sp<FakeWindowHandle>::make("Invisible", invisibleWindowToken, /*focusable=*/true,
/*visible=*/false);
windows.push_back(invisibleWindow);
// invisible window cannot get focused
FocusRequest request;
request.displayId = 42;
request.token = invisibleWindowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_FALSE(changes);
// Window visibility changes and the window gets focused
invisibleWindow->setVisible(true);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ invisibleWindowToken);
}
TEST(FocusResolverTest, FocusRequestsArePersistent) {
sp<IBinder> windowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
sp<FakeWindowHandle> window =
sp<FakeWindowHandle>::make("Test Window", windowToken, /*focusable=*/false,
/*visible=*/true);
windows.push_back(window);
// non-focusable window cannot get focused
FocusRequest request;
request.displayId = 42;
request.token = windowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_FALSE(changes);
// Focusability changes and the window gets focused
window->setFocusable(true);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ windowToken);
// Visibility changes and the window loses focus
window->setVisible(false);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ windowToken, /*to*/ nullptr);
// Visibility changes and the window gets focused
window->setVisible(true);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ windowToken);
// Window is gone and the window loses focus
changes = focusResolver.setInputWindows(request.displayId, {});
ASSERT_FOCUS_CHANGE(changes, /*from*/ windowToken, /*to*/ nullptr);
// Window returns and the window gains focus
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ windowToken);
}
TEST(FocusResolverTest, FocusTransferTarget) {
sp<IBinder> hostWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
sp<FakeWindowHandle> hostWindow =
sp<FakeWindowHandle>::make("Host Window", hostWindowToken, /*focusable=*/true,
/*visible=*/true);
windows.push_back(hostWindow);
sp<IBinder> embeddedWindowToken = sp<BBinder>::make();
sp<FakeWindowHandle> embeddedWindow =
sp<FakeWindowHandle>::make("Embedded Window", embeddedWindowToken, /*focusable=*/false,
/*visible=*/true);
windows.push_back(embeddedWindow);
FocusRequest request;
request.displayId = 42;
request.token = hostWindowToken;
// Host wants to transfer touch to embedded.
hostWindow->editInfo()->focusTransferTarget = embeddedWindowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
// Embedded was not focusable so host gains focus.
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ hostWindowToken);
// Embedded is now focusable so will gain focus
embeddedWindow->setFocusable(true);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ hostWindowToken, /*to*/ embeddedWindowToken);
// Embedded is not visible so host will get focus
embeddedWindow->setVisible(false);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ embeddedWindowToken, /*to*/ hostWindowToken);
// Embedded is now visible so will get focus
embeddedWindow->setVisible(true);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ hostWindowToken, /*to*/ embeddedWindowToken);
// Remove focusTransferTarget from host. Host will gain focus.
hostWindow->editInfo()->focusTransferTarget = nullptr;
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ embeddedWindowToken, /*to*/ hostWindowToken);
// Set invalid token for focusTransferTarget. Host will remain focus
hostWindow->editInfo()->focusTransferTarget = sp<BBinder>::make();
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FALSE(changes);
}
TEST(FocusResolverTest, FocusTransferMultipleInChain) {
sp<IBinder> hostWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
sp<FakeWindowHandle> hostWindow =
sp<FakeWindowHandle>::make("Host Window", hostWindowToken, /*focusable=*/true,
/*visible=*/true);
windows.push_back(hostWindow);
sp<IBinder> embeddedWindowToken = sp<BBinder>::make();
sp<FakeWindowHandle> embeddedWindow =
sp<FakeWindowHandle>::make("Embedded Window", embeddedWindowToken, /*focusable=*/true,
/*visible=*/true);
windows.push_back(embeddedWindow);
sp<IBinder> embeddedWindowToken2 = sp<BBinder>::make();
sp<FakeWindowHandle> embeddedWindow2 =
sp<FakeWindowHandle>::make("Embedded Window2", embeddedWindowToken2, /*focusable=*/true,
/*visible=*/true);
windows.push_back(embeddedWindow2);
FocusRequest request;
request.displayId = 42;
request.token = hostWindowToken;
hostWindow->editInfo()->focusTransferTarget = embeddedWindowToken;
embeddedWindow->editInfo()->focusTransferTarget = embeddedWindowToken2;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ embeddedWindowToken2);
}
TEST(FocusResolverTest, FocusTransferTargetCycle) {
sp<IBinder> hostWindowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
sp<FakeWindowHandle> hostWindow =
sp<FakeWindowHandle>::make("Host Window", hostWindowToken, /*focusable=*/true,
/*visible=*/true);
windows.push_back(hostWindow);
sp<IBinder> embeddedWindowToken = sp<BBinder>::make();
sp<FakeWindowHandle> embeddedWindow =
sp<FakeWindowHandle>::make("Embedded Window", embeddedWindowToken, /*focusable=*/true,
/*visible=*/true);
windows.push_back(embeddedWindow);
sp<IBinder> embeddedWindowToken2 = sp<BBinder>::make();
sp<FakeWindowHandle> embeddedWindow2 =
sp<FakeWindowHandle>::make("Embedded Window2", embeddedWindowToken2, /*focusable=*/true,
/*visible=*/true);
windows.push_back(embeddedWindow2);
FocusRequest request;
request.displayId = 42;
request.token = hostWindowToken;
hostWindow->editInfo()->focusTransferTarget = embeddedWindowToken;
embeddedWindow->editInfo()->focusTransferTarget = embeddedWindowToken2;
embeddedWindow2->editInfo()->focusTransferTarget = hostWindowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
// Cycle will be detected and stop right before trying to transfer token to host again.
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ embeddedWindowToken2);
}
TEST(FocusResolverTest, FocusRequestsAreClearedWhenWindowIsRemoved) {
sp<IBinder> windowToken = sp<BBinder>::make();
std::vector<sp<WindowInfoHandle>> windows;
sp<FakeWindowHandle> window =
sp<FakeWindowHandle>::make("Test Window", windowToken, /*focusable=*/true,
/*visible=*/true);
windows.push_back(window);
FocusRequest request;
request.displayId = 42;
request.token = windowToken;
FocusResolver focusResolver;
std::optional<FocusResolver::FocusChanges> changes =
focusResolver.setFocusedWindow(request, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ windowToken);
ASSERT_EQ(request.displayId, changes->displayId);
// Start with a focused window
window->setFocusable(true);
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FOCUS_CHANGE(changes, /*from*/ nullptr, /*to*/ windowToken);
// When a display is removed, all windows are removed from the display
// and our focused window loses focus
changes = focusResolver.setInputWindows(request.displayId, {});
ASSERT_FOCUS_CHANGE(changes, /*from*/ windowToken, /*to*/ nullptr);
focusResolver.displayRemoved(request.displayId);
// When a display is readded, the window does not get focus since the request was cleared.
changes = focusResolver.setInputWindows(request.displayId, windows);
ASSERT_FALSE(changes);
}
} // namespace android::inputdispatcher
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