| // 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. |
| |
| #include "ui/base/accelerators/accelerator_history.h" |
| |
| namespace ui { |
| |
| AcceleratorHistory::AcceleratorHistory() {} |
| |
| AcceleratorHistory::~AcceleratorHistory() {} |
| |
| void AcceleratorHistory::StoreCurrentAccelerator( |
| const Accelerator& accelerator) { |
| // Track the currently pressed keys so that we don't mistakenly store an |
| // already pressed key as a new keypress after another key has been released. |
| // As an example, when the user presses and holds Alt+Search, then releases |
| // Alt but keeps holding the Search key down, at this point no new Search |
| // presses should be stored in the history after the Alt release, since Search |
| // was never released in the first place. crbug.com/704280. |
| if (accelerator.key_state() == Accelerator::KeyState::PRESSED) { |
| if (!currently_pressed_keys_.emplace(accelerator.key_code()).second) |
| return; |
| } else { |
| currently_pressed_keys_.erase(accelerator.key_code()); |
| } |
| |
| if (accelerator != current_accelerator_) { |
| previous_accelerator_ = current_accelerator_; |
| current_accelerator_ = accelerator; |
| } |
| } |
| |
| void AcceleratorHistory::InterruptCurrentAccelerator() { |
| if (current_accelerator_.key_state() == Accelerator::KeyState::PRESSED) { |
| // Only interrupts pressed keys. |
| current_accelerator_.set_interrupted_by_mouse_event(true); |
| } |
| } |
| |
| } // namespace ui |
