Move a bunch of random other files to src/ui/base...

app/active_window_watcher_x.cc

-// Copyright (c) 2009 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 <X11/Xlib.h>
-#include <gdk/gdk.h>
-#include <gdk/gdkx.h>
-
-#include "app/active_window_watcher_x.h"
-
-static Atom kNetActiveWindowAtom = None;
-
-// static
-ActiveWindowWatcherX* ActiveWindowWatcherX::GetInstance() {
-  return Singleton<ActiveWindowWatcherX>::get();
-}
-
-// static
-void ActiveWindowWatcherX::AddObserver(Observer* observer) {
-  GetInstance()->observers_.AddObserver(observer);
-}
-
-// static
-void ActiveWindowWatcherX::RemoveObserver(Observer* observer) {
-  GetInstance()->observers_.RemoveObserver(observer);
-}
-
-ActiveWindowWatcherX::ActiveWindowWatcherX() {
-  Init();
-}
-
-ActiveWindowWatcherX::~ActiveWindowWatcherX() {
-}
-
-void ActiveWindowWatcherX::Init() {
-  GdkAtom kNetActiveWindow = gdk_atom_intern("_NET_ACTIVE_WINDOW", FALSE);
-  kNetActiveWindowAtom = gdk_x11_atom_to_xatom_for_display(
-      gdk_screen_get_display(gdk_screen_get_default()), kNetActiveWindow);
-
-  GdkWindow* root = gdk_get_default_root_window();
-
-  // Set up X Event filter to listen for PropertyChange X events.  These events
-  // tell us when the active window changes.
-  // Don't use XSelectInput directly here, as gdk internally seems to cache the
-  // mask and reapply XSelectInput after this, resetting any mask we set here.
-  gdk_window_set_events(root,
-                        static_cast<GdkEventMask>(gdk_window_get_events(root) |
-                                                  GDK_PROPERTY_CHANGE_MASK));
-  gdk_window_add_filter(NULL, &ActiveWindowWatcherX::OnWindowXEvent, this);
-}
-
-void ActiveWindowWatcherX::NotifyActiveWindowChanged() {
-  // We don't use gdk_screen_get_active_window() because it caches
-  // whether or not the window manager supports _NET_ACTIVE_WINDOW.
-  // This causes problems at startup for chromiumos.
-  Atom type = None;
-  int format = 0;  // size in bits of each item in 'property'
-  long unsigned int num_items = 0, remaining_bytes = 0;
-  unsigned char* property = NULL;
-
-  XGetWindowProperty(gdk_x11_get_default_xdisplay(),
-                     GDK_WINDOW_XID(gdk_get_default_root_window()),
-                     kNetActiveWindowAtom,
-                     0,      // offset into property data to read
-                     1,      // length to get in 32-bit quantities
-                     False,  // deleted
-                     AnyPropertyType,
-                     &type,
-                     &format,
-                     &num_items,
-                     &remaining_bytes,
-                     &property);
-
-  // Check that the property was set and contained a single 32-bit item (we
-  // don't check that remaining_bytes is 0, though, as XFCE's window manager
-  // seems to actually store two values in the property for some unknown
-  // reason.)
-  if (format == 32 && num_items == 1) {
-    int xid = *reinterpret_cast<int*>(property);
-    GdkWindow* active_window = gdk_window_lookup(xid);
-    FOR_EACH_OBSERVER(
-        Observer,
-        observers_,
-        ActiveWindowChanged(active_window));
-  }
-  if (property)
-    XFree(property);
-}
-
-GdkFilterReturn ActiveWindowWatcherX::OnWindowXEvent(GdkXEvent* xevent,
-    GdkEvent* event, gpointer window_watcher) {
-  ActiveWindowWatcherX* watcher = reinterpret_cast<ActiveWindowWatcherX*>(
-      window_watcher);
-  XEvent* xev = static_cast<XEvent*>(xevent);
-
-  if (xev->xany.type == PropertyNotify &&
-      xev->xproperty.atom == kNetActiveWindowAtom) {
-    watcher->NotifyActiveWindowChanged();
-  }
-
-  return GDK_FILTER_CONTINUE;
-}