base/message_pump_linux.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/message_pump_linux.h"
   6
   7 #include "base/logging.h"
   8 #include "base/message_loop.h"
   9
  10 namespace base {
  11
  12 MessagePumpLinux::MessagePumpLinux()
  13     : MessagePumpLibevent() {
  14 }
  15
  16 MessagePumpLinux::~MessagePumpLinux() {
  17 }
  18
  19 void MessagePumpLinux::AddObserver(MessagePumpObserver* /* observer */) {
  20   NOTIMPLEMENTED();
  21 }
  22
  23 void MessagePumpLinux::RemoveObserver(MessagePumpObserver* /* observer */) {
  24   NOTIMPLEMENTED();
  25 }
  26
  27 // static
  28 MessagePumpLinux* MessagePumpLinux::Current() {
  29   MessageLoopForUI* loop = MessageLoopForUI::current();
  30   return static_cast<MessagePumpLinux*>(loop->pump_ui());
  31 }
  32
  33 void MessagePumpLinux::AddDispatcherForRootWindow(
  34     MessagePumpDispatcher* dispatcher) {
  35   // Only one root window is supported.
  36   DCHECK(dispatcher_.size() == 0);
  37   dispatcher_.insert(dispatcher_.begin(),dispatcher);
  38 }
  39
  40 void MessagePumpLinux::RemoveDispatcherForRootWindow(
  41       MessagePumpDispatcher* dispatcher) {
  42   DCHECK(dispatcher_.size() == 1);
  43   dispatcher_.pop_back();
  44 }
  45
  46 bool MessagePumpLinux::Dispatch(const base::NativeEvent& dev) {
  47   // fprintf(stderr, "MessagePumpLinux::Dispatch... got event\n");
  48   if (dispatcher_.size() > 0)
  49     return dispatcher_[0]->Dispatch(dev);
  50   else
  51     return true;
  52 }
  53
  54 // This code assumes that the caller tracks the lifetime of the |dispatcher|.
  55 void MessagePumpLinux::RunWithDispatcher(
  56     Delegate* delegate, MessagePumpDispatcher* dispatcher) {
  57   dispatcher_.push_back(dispatcher);
  58   Run(delegate);
  59   dispatcher_.pop_back();
  60 }
  61
  62 }  // namespace base