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// Copyright (c) 2012 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 "remoting/client/key_event_mapper.h"
#include "remoting/proto/event.pb.h"
namespace remoting {
KeyEventMapper::KeyEventMapper() {
}
KeyEventMapper::KeyEventMapper(InputStub* stub) : protocol::InputFilter(stub) {
}
KeyEventMapper::~KeyEventMapper() {
}
void KeyEventMapper::SetTrapCallback(KeyTrapCallback callback) {
trap_callback = callback;
}
void KeyEventMapper::TrapKey(uint32_t usb_keycode, bool trap_key) {
if (trap_key) {
trapped_keys.insert(usb_keycode);
} else {
trapped_keys.erase(usb_keycode);
}
}
void KeyEventMapper::RemapKey(uint32_t in_usb_keycode,
uint32_t out_usb_keycode) {
if (in_usb_keycode == out_usb_keycode) {
mapped_keys.erase(in_usb_keycode);
} else {
mapped_keys[in_usb_keycode] = out_usb_keycode;
}
}
void KeyEventMapper::InjectKeyEvent(const protocol::KeyEvent& event) {
if (event.has_usb_keycode()) {
// Deliver trapped keys to the callback, not the next stub.
if (!trap_callback.is_null() && event.has_pressed() &&
(trapped_keys.find(event.usb_keycode()) != trapped_keys.end())) {
trap_callback.Run(event);
return;
}
// Re-map mapped keys to the new value before passing them on.
std::map<uint32_t, uint32_t>::iterator mapped =
mapped_keys.find(event.usb_keycode());
if (mapped != mapped_keys.end()) {
protocol::KeyEvent new_event(event);
new_event.set_usb_keycode(mapped->second);
InputFilter::InjectKeyEvent(new_event);
return;
}
}
InputFilter::InjectKeyEvent(event);
}
} // namespace remoting
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