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// Copyright 2013 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 "ash/wm/sticky_keys.h"
#include <X11/Xlib.h>
#undef None
#undef Bool
#include "ash/test/ash_test_base.h"
#include "base/memory/scoped_vector.h"
#include "ui/base/x/x11_util.h"
namespace ash {
// A stub implementation of EventTarget.
class StubEventTarget : public ui::EventTarget {
public:
StubEventTarget() {}
virtual ~StubEventTarget() {}
virtual bool CanAcceptEvent(const ui::Event& event) OVERRIDE {
return true;
}
virtual EventTarget* GetParentTarget() OVERRIDE {
return NULL;
}
private:
DISALLOW_COPY_AND_ASSIGN(StubEventTarget);
};
// A testable and StickyKeysHandler.
class MockStickyKeysHandlerDelegate :
public StickyKeysHandler::StickyKeysHandlerDelegate {
public:
MockStickyKeysHandlerDelegate() {}
virtual ~MockStickyKeysHandlerDelegate() {}
// StickyKeysHandler override.
virtual void DispatchKeyEvent(ui::KeyEvent* event,
aura::Window* target) OVERRIDE {
key_events_.push_back(event->Copy());
}
// Returns the count of dispatched keyboard event.
size_t GetKeyEventCount() const {
return key_events_.size();
}
// Returns the |index|-th dispatched keyboard event.
const ui::KeyEvent* GetKeyEvent(size_t index) const {
return key_events_[index];
}
private:
ScopedVector<ui::KeyEvent> key_events_;
DISALLOW_COPY_AND_ASSIGN(MockStickyKeysHandlerDelegate);
};
class StickyKeysTest : public test::AshTestBase {
protected:
virtual void SetUp() OVERRIDE {
target_.reset(new StubEventTarget());
test::AshTestBase::SetUp();
}
virtual void TearDown() OVERRIDE {
test::AshTestBase::TearDown();
target_.reset();
}
// Generates keyboard event.
ui::KeyEvent* GenerateKey(bool is_key_press, ui::KeyboardCode code) {
XEvent* xev = new XEvent();
ui::InitXKeyEventForTesting(
is_key_press ? ui::ET_KEY_PRESSED : ui::ET_KEY_RELEASED,
code,
0,
xev);
xevs_.push_back(xev);
ui::KeyEvent* event = new ui::KeyEvent(xev, false);
ui::Event::DispatcherApi dispatcher(event);
dispatcher.set_target(target_.get());
return event;
}
private:
scoped_ptr<StubEventTarget> target_;
ScopedVector<XEvent> xevs_;
};
TEST_F(StickyKeysTest, BasicOneshotScenarioTest) {
scoped_ptr<ui::KeyEvent> ev;
MockStickyKeysHandlerDelegate* mock_delegate =
new MockStickyKeysHandlerDelegate();
StickyKeysHandler sticky_key(ui::EF_SHIFT_DOWN, mock_delegate);
EXPECT_EQ(StickyKeysHandler::DISABLED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
ev.reset(GenerateKey(false, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
// By typing Shift key, internal state become ENABLED.
EXPECT_EQ(StickyKeysHandler::ENABLED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_A));
sticky_key.HandleKeyEvent(ev.get());
// Next keyboard event is shift modified.
EXPECT_TRUE(ev->flags() & ui::EF_SHIFT_DOWN);
ev.reset(GenerateKey(false, ui::VKEY_A));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::DISABLED, sticky_key.current_state());
// Making sure Shift up keyboard event is dispatched.
ASSERT_EQ(2U, mock_delegate->GetKeyEventCount());
EXPECT_EQ(ui::VKEY_A, mock_delegate->GetKeyEvent(0)->key_code());
EXPECT_EQ(ui::ET_KEY_PRESSED, mock_delegate->GetKeyEvent(0)->type());
EXPECT_EQ(ui::VKEY_SHIFT, mock_delegate->GetKeyEvent(1)->key_code());
EXPECT_EQ(ui::ET_KEY_RELEASED, mock_delegate->GetKeyEvent(1)->type());
// Enabled state is one shot, so next key event should not be shift modified.
ev.reset(GenerateKey(true, ui::VKEY_A));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_FALSE(ev->flags() & ui::EF_SHIFT_DOWN);
ev.reset(GenerateKey(false, ui::VKEY_A));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_FALSE(ev->flags() & ui::EF_SHIFT_DOWN);
}
TEST_F(StickyKeysTest, BasicLockedScenarioTest) {
scoped_ptr<ui::KeyEvent> ev;
MockStickyKeysHandlerDelegate* mock_delegate =
new MockStickyKeysHandlerDelegate();
StickyKeysHandler sticky_key(ui::EF_SHIFT_DOWN, mock_delegate);
EXPECT_EQ(StickyKeysHandler::DISABLED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
ev.reset(GenerateKey(false, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
// By typing shift key, internal state become ENABLED.
EXPECT_EQ(StickyKeysHandler::ENABLED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
ev.reset(GenerateKey(false, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
// By typing shift key again, internal state become LOCKED.
EXPECT_EQ(StickyKeysHandler::LOCKED, sticky_key.current_state());
// All keyboard events including keyUp become shift modified.
ev.reset(GenerateKey(true, ui::VKEY_A));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_TRUE(ev->flags() & ui::EF_SHIFT_DOWN);
ev.reset(GenerateKey(false, ui::VKEY_A));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_TRUE(ev->flags() & ui::EF_SHIFT_DOWN);
// Locked state keeps after normal keyboard event.
EXPECT_EQ(StickyKeysHandler::LOCKED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_B));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_TRUE(ev->flags() & ui::EF_SHIFT_DOWN);
ev.reset(GenerateKey(false, ui::VKEY_B));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_TRUE(ev->flags() & ui::EF_SHIFT_DOWN);
EXPECT_EQ(StickyKeysHandler::LOCKED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
ev.reset(GenerateKey(false, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
// By typing shift key again, internal state become back to DISABLED.
EXPECT_EQ(StickyKeysHandler::DISABLED, sticky_key.current_state());
}
TEST_F(StickyKeysTest, NonTargetModifierTest) {
scoped_ptr<ui::KeyEvent> ev;
MockStickyKeysHandlerDelegate* mock_delegate =
new MockStickyKeysHandlerDelegate();
StickyKeysHandler sticky_key(ui::EF_SHIFT_DOWN, mock_delegate);
EXPECT_EQ(StickyKeysHandler::DISABLED, sticky_key.current_state());
// Non target modifier key does not affect internal state
ev.reset(GenerateKey(true, ui::VKEY_MENU));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::DISABLED, sticky_key.current_state());
ev.reset(GenerateKey(false, ui::VKEY_MENU));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::DISABLED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
ev.reset(GenerateKey(false, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::ENABLED, sticky_key.current_state());
// Non target modifier key does not affect internal state
ev.reset(GenerateKey(true, ui::VKEY_MENU));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::ENABLED, sticky_key.current_state());
ev.reset(GenerateKey(false, ui::VKEY_MENU));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::ENABLED, sticky_key.current_state());
ev.reset(GenerateKey(true, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
ev.reset(GenerateKey(false, ui::VKEY_SHIFT));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::LOCKED, sticky_key.current_state());
// Non target modifier key does not affect internal state
ev.reset(GenerateKey(true, ui::VKEY_MENU));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::LOCKED, sticky_key.current_state());
ev.reset(GenerateKey(false, ui::VKEY_MENU));
sticky_key.HandleKeyEvent(ev.get());
EXPECT_EQ(StickyKeysHandler::LOCKED, sticky_key.current_state());
}
} // namespace ash
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