ui/base/x/x11_foreign_window_manager.cc

   1 // Copyright 2014 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 "ui/base/x/x11_foreign_window_manager.h"
   6
   7 #include <X11/Xlib.h>
   8
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/singleton.h"
  11
  12 namespace ui {
  13
  14 // static
  15 XForeignWindowManager* XForeignWindowManager::GetInstance() {
  16   return base::Singleton<XForeignWindowManager>::get();
  17 }
  18
  19 int XForeignWindowManager::RequestEvents(XID xid, long event_mask) {
  20   request_map_[xid].push_back(Request(next_request_id_, event_mask));
  21   UpdateSelectedEvents(xid);
  22   return next_request_id_++;
  23 }
  24
  25 void XForeignWindowManager::CancelRequest(int request_id) {
  26   for (std::map<XID, RequestVector>::iterator map_it = request_map_.begin();
  27        map_it != request_map_.end(); ++map_it) {
  28     RequestVector* vector = &map_it->second;
  29     for (RequestVector::iterator vector_it = vector->begin();
  30          vector_it != vector->end(); ++vector_it) {
  31       if (vector_it->request_id == request_id) {
  32         vector->erase(vector_it);
  33         UpdateSelectedEvents(map_it->first);
  34         if (vector->empty())
  35           request_map_.erase(map_it);
  36         return;
  37       }
  38     }
  39   }
  40 }
  41
  42 void XForeignWindowManager::OnWindowDestroyed(XID xid) {
  43   request_map_.erase(xid);
  44 }
  45
  46 XForeignWindowManager::XForeignWindowManager() : next_request_id_(0) {
  47 }
  48
  49 XForeignWindowManager::~XForeignWindowManager() {
  50 }
  51
  52 void XForeignWindowManager::UpdateSelectedEvents(XID xid) {
  53   std::map<XID, RequestVector>::iterator it = request_map_.find(xid);
  54   if (it == request_map_.end())
  55     return;
  56
  57   long event_mask = NoEventMask;
  58   const RequestVector& list = it->second;
  59   for (size_t i = 0; i < list.size(); ++i)
  60     event_mask |= list[i].event_mask;
  61
  62   XSelectInput(gfx::GetXDisplay(), xid, event_mask);
  63 }
  64
  65 XForeignWindowManager::Request::Request(int request_id, long event_mask)
  66     : request_id(request_id),
  67       event_mask(event_mask) {
  68 }
  69
  70 XForeignWindowManager::Request::~Request() {
  71 }
  72
  73 }  // namespace ui