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Unified Diff: chrome/browser/chromeos/events/event_rewriter.h

Issue 2724913002: Move chromeos::EventRewriter to //ui/chromeos/events (Closed)
Patch Set: Fix a typo Created 3 years, 9 months ago
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Index: chrome/browser/chromeos/events/event_rewriter.h
diff --git a/chrome/browser/chromeos/events/event_rewriter.h b/chrome/browser/chromeos/events/event_rewriter.h
deleted file mode 100644
index e887a2c8707df412425cbecf8e66d1db9970a359..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/events/event_rewriter.h
+++ /dev/null
@@ -1,205 +0,0 @@
-// Copyright 2014 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.
-
-#ifndef CHROME_BROWSER_CHROMEOS_EVENTS_EVENT_REWRITER_H_
-#define CHROME_BROWSER_CHROMEOS_EVENTS_EVENT_REWRITER_H_
-
-#include <map>
-#include <memory>
-#include <set>
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/containers/hash_tables.h"
-#include "base/macros.h"
-#include "ui/events/event.h"
-#include "ui/events/event_rewriter.h"
-#include "ui/events/keycodes/dom/dom_key.h"
-
-class PrefService;
-
-namespace ui {
-enum class DomCode;
-};
-
-namespace chromeos {
-namespace input_method {
-class ImeKeyboard;
-}
-
-// EventRewriter makes various changes to keyboard-related events,
-// including KeyEvents and some other events with keyboard modifier flags:
-// - maps certain non-character keys according to user preferences
-// (Control, Alt, Search, Caps Lock, Escape, Backspace, Diamond);
-// - maps Command to Control on Apple keyboards;
-// - converts numeric pad editing keys to their numeric forms;
-// - converts top-row function keys to special keys where necessary;
-// - handles various key combinations like Search+Backspace -> Delete
-// and Search+number to Fnumber;
-// - handles key/pointer combinations like Alt+Button1 -> Button3.
-class EventRewriter : public ui::EventRewriter {
- public:
- enum DeviceType {
- kDeviceUnknown = 0,
- kDeviceAppleKeyboard,
- kDeviceHotrodRemote,
- kDeviceVirtualCoreKeyboard, // X-server generated events.
- };
-
- // Things that keyboard-related rewriter phases can change about an Event.
- struct MutableKeyState {
- int flags;
- ui::DomCode code;
- ui::DomKey::Base key;
- ui::KeyboardCode key_code;
- };
-
- // Does not take ownership of the |sticky_keys_controller|, which may also
- // be NULL (for testing without ash), in which case sticky key operations
- // don't happen.
- explicit EventRewriter(ui::EventRewriter* sticky_keys_controller);
- ~EventRewriter() override;
-
- // Calls KeyboardDeviceAddedInternal.
- DeviceType KeyboardDeviceAddedForTesting(int device_id,
- const std::string& device_name);
-
- // Calls RewriteMouseEvent().
- void RewriteMouseButtonEventForTesting(
- const ui::MouseEvent& event,
- std::unique_ptr<ui::Event>* rewritten_event);
-
- const std::map<int, DeviceType>& device_id_to_type_for_testing() const {
- return device_id_to_type_;
- }
- void set_last_keyboard_device_id_for_testing(int device_id) {
- last_keyboard_device_id_ = device_id;
- }
- void set_pref_service_for_testing(const PrefService* pref_service) {
- pref_service_for_testing_ = pref_service;
- }
- void set_ime_keyboard_for_testing(
- chromeos::input_method::ImeKeyboard* ime_keyboard) {
- ime_keyboard_for_testing_ = ime_keyboard;
- }
-
- // EventRewriter overrides:
- ui::EventRewriteStatus RewriteEvent(
- const ui::Event& event,
- std::unique_ptr<ui::Event>* rewritten_event) override;
- ui::EventRewriteStatus NextDispatchEvent(
- const ui::Event& last_event,
- std::unique_ptr<ui::Event>* new_event) override;
-
- // Generate a new key event from an original key event and the replacement
- // state determined by a key rewriter.
- static void BuildRewrittenKeyEvent(
- const ui::KeyEvent& key_event,
- const MutableKeyState& state,
- std::unique_ptr<ui::Event>* rewritten_event);
-
- private:
- void DeviceKeyPressedOrReleased(int device_id);
-
- // Returns the PrefService that should be used.
- const PrefService* GetPrefService() const;
-
- // Adds a device to |device_id_to_type_|.
- DeviceType KeyboardDeviceAdded(int device_id);
-
- // Checks the type of the |device_name|, |vendor_id| and |product_id|, and
- // inserts a new entry to |device_id_to_type_|.
- DeviceType KeyboardDeviceAddedInternal(int device_id,
- const std::string& device_name,
- int vendor_id,
- int product_id);
-
- // Returns true if |last_keyboard_device_id_| is Apple's.
- bool IsAppleKeyboard() const;
- // Returns true if |last_keyboard_device_id_| is Hotrod remote.
- bool IsHotrodRemote() const;
- // Returns true if |last_keyboard_device_id_| is of given |device_type|.
- bool IsLastKeyboardOfType(DeviceType device_type) const;
-
- // Returns true if the target for |event| would prefer to receive raw function
- // keys instead of having them rewritten into back, forward, brightness,
- // volume, etc. or if the user has specified that they desire top-row keys to
- // be treated as function keys globally.
- bool TopRowKeysAreFunctionKeys(const ui::KeyEvent& event) const;
-
- // Given modifier flags |original_flags|, returns the remapped modifiers
- // according to user preferences and/or event properties.
- int GetRemappedModifierMasks(const PrefService& pref_service,
- const ui::Event& event,
- int original_flags) const;
-
- // Rewrite a particular kind of event.
- ui::EventRewriteStatus RewriteKeyEvent(
- const ui::KeyEvent& key_event,
- std::unique_ptr<ui::Event>* rewritten_event);
- ui::EventRewriteStatus RewriteMouseButtonEvent(
- const ui::MouseEvent& mouse_event,
- std::unique_ptr<ui::Event>* rewritten_event);
- ui::EventRewriteStatus RewriteMouseWheelEvent(
- const ui::MouseWheelEvent& mouse_event,
- std::unique_ptr<ui::Event>* rewritten_event);
- ui::EventRewriteStatus RewriteTouchEvent(
- const ui::TouchEvent& touch_event,
- std::unique_ptr<ui::Event>* rewritten_event);
- ui::EventRewriteStatus RewriteScrollEvent(
- const ui::ScrollEvent& scroll_event,
- std::unique_ptr<ui::Event>* rewritten_event);
-
- // Rewriter phases. These can inspect the original |event|, but operate using
- // the current |state|, which may have been modified by previous phases.
- bool RewriteModifierKeys(const ui::KeyEvent& event, MutableKeyState* state);
- void RewriteNumPadKeys(const ui::KeyEvent& event, MutableKeyState* state);
- void RewriteExtendedKeys(const ui::KeyEvent& event, MutableKeyState* state);
- void RewriteFunctionKeys(const ui::KeyEvent& event, MutableKeyState* state);
- void RewriteLocatedEvent(const ui::Event& event, int* flags);
- int RewriteModifierClick(const ui::MouseEvent& event, int* flags);
-
- // A set of device IDs whose press event has been rewritten.
- // This is to ensure that press and release events are rewritten consistently.
- std::set<int> pressed_device_ids_;
-
- std::map<int, DeviceType> device_id_to_type_;
-
- // The |source_device_id()| of the most recent keyboard event,
- // used to interpret modifiers on pointer events.
- int last_keyboard_device_id_;
-
- chromeos::input_method::ImeKeyboard* ime_keyboard_for_testing_;
- const PrefService* pref_service_for_testing_;
-
- // The sticky keys controller is not owned here;
- // at time of writing it is a singleton in ash::Shell.
- ui::EventRewriter* const sticky_keys_controller_;
-
- // Some keyboard layouts have 'latching' keys, which either apply
- // a modifier while held down (like normal modifiers), or, if no
- // non-modifier is pressed while the latching key is down, apply the
- // modifier to the next non-modifier keypress. Under Ozone the stateless
- // layout model requires this to be handled explicitly. See crbug.com/518237
- // Pragmatically this, like the Diamond key, is handled here in
- // EventRewriter, but modifier state management is scattered between
- // here, sticky keys, and the system layer (X11 or Ozone), and could
- // do with refactoring.
- // - |pressed_modifier_latches_| records the latching keys currently pressed.
- // It also records the active modifier flags for non-modifier keys that are
- // remapped to modifiers, e.g. Diamond/F15.
- // - |latched_modifier_latches_| records the latching keys just released,
- // to be applied to the next non-modifier key.
- // - |used_modifier_latches_| records the latching keys applied to a non-
- // modifier while pressed, so that they do not get applied after release.
- int pressed_modifier_latches_;
- int latched_modifier_latches_;
- int used_modifier_latches_;
-
- DISALLOW_COPY_AND_ASSIGN(EventRewriter);
-};
-
-} // namespace chromeos
-
-#endif // CHROME_BROWSER_CHROMEOS_EVENTS_EVENT_REWRITER_H_
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