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// Copyright (c) 2011 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/host/local_input_monitor.h"
#import <AppKit/AppKit.h>
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "remoting/host/chromoting_host.h"
#import "third_party/GTM/AppKit/GTMCarbonEvent.h"
// Esc Key Code is 53.
// http://boredzo.org/blog/wp-content/uploads/2007/05/IMTx-virtual-keycodes.pdf
static const NSUInteger kEscKeyCode = 53;
@interface HotKeyMonitor : NSObject {
@private
GTMCarbonHotKey* hot_key_;
remoting::ChromotingHost* host_;
}
// Called when the hotKey is hit.
- (void)hotKeyHit:(GTMCarbonHotKey*)hotKey;
// Must be called when the HotKeyMonitor is no longer to be used.
// Similar to NSTimer in that more than a simple release is required.
- (void)invalidate;
@end
@implementation HotKeyMonitor
- (id)initWithHost:(remoting::ChromotingHost*)host {
if ((self = [super init])) {
host_ = host;
GTMCarbonEventDispatcherHandler* handler =
[GTMCarbonEventDispatcherHandler sharedEventDispatcherHandler];
hot_key_ = [handler registerHotKey:kEscKeyCode
modifiers:NSShiftKeyMask
target:self
action:@selector(hotKeyHit:)
userInfo:nil
whenPressed:YES];
if (!hot_key_) {
[self release];
return nil;
}
}
return self;
}
- (void)hotKeyHit:(GTMCarbonHotKey*)hotKey {
host_->Shutdown(NULL);
}
- (void)invalidate {
GTMCarbonEventDispatcherHandler* handler =
[GTMCarbonEventDispatcherHandler sharedEventDispatcherHandler];
[handler unregisterHotKey:hot_key_];
}
@end
namespace {
class LocalInputMonitorMac : public remoting::LocalInputMonitor {
public:
LocalInputMonitorMac() : hot_key_monitor_(NULL) {}
virtual ~LocalInputMonitorMac();
virtual void Start(remoting::ChromotingHost* host) OVERRIDE;
virtual void Stop() OVERRIDE;
private:
HotKeyMonitor* hot_key_monitor_;
DISALLOW_COPY_AND_ASSIGN(LocalInputMonitorMac);
};
} // namespace
LocalInputMonitorMac::~LocalInputMonitorMac() {
Stop();
}
void LocalInputMonitorMac::Start(remoting::ChromotingHost* host) {
CHECK(!hot_key_monitor_);
hot_key_monitor_ = [[HotKeyMonitor alloc] initWithHost:host];
CHECK(hot_key_monitor_);
}
void LocalInputMonitorMac::Stop() {
[hot_key_monitor_ invalidate];
[hot_key_monitor_ release];
hot_key_monitor_ = nil;
}
remoting::LocalInputMonitor* remoting::LocalInputMonitor::Create() {
return new LocalInputMonitorMac;
}
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