Make File-Picker modal on Linux

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc

 // 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 "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h"
 
 #include <X11/extensions/shape.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xregion.h>
@@ skipping 10 matching lines @@
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_property.h"
 #include "ui/base/dragdrop/os_exchange_data_provider_aurax11.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/events/devices/x11/device_data_manager_x11.h"
 #include "ui/events/devices/x11/device_list_cache_x11.h"
 #include "ui/events/devices/x11/touch_factory_x11.h"
 #include "ui/events/event_utils.h"
+#include "ui/events/null_event_targeter.h"
 #include "ui/events/platform/platform_event_source.h"
 #include "ui/events/platform/x11/x11_event_source.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/image/image_skia_rep.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/path_x11.h"
 #include "ui/gfx/screen.h"
@@ skipping 124 matching lines @@
       use_native_frame_(false),
       should_maximize_after_map_(false),
       use_argb_visual_(false),
       drag_drop_client_(NULL),
       native_widget_delegate_(native_widget_delegate),
       desktop_native_widget_aura_(desktop_native_widget_aura),
       content_window_(NULL),
       window_parent_(NULL),
       custom_window_shape_(false),
       urgency_hint_set_(false),
+      modal_dialog_xid_(0),
       close_widget_factory_(this) {
 }
 
 DesktopWindowTreeHostX11::~DesktopWindowTreeHostX11() {
   window()->ClearProperty(kHostForRootWindow);
   aura::client::SetWindowMoveClient(window(), NULL);
   desktop_native_widget_aura_->OnDesktopWindowTreeHostDestroyed(this);
   DestroyDispatcher();
 }
 
@@ skipping 1845 matching lines @@
   return gfx::ToEnclosingRect(rect_in_dip);
 }
 
 gfx::Rect DesktopWindowTreeHostX11::ToPixelRect(
     const gfx::Rect& rect_in_dip) const {
   gfx::RectF rect_in_pixels = rect_in_dip;
   GetRootTransform().TransformRect(&rect_in_pixels);
   return gfx::ToEnclosingRect(rect_in_pixels);
 }
 
+XID DesktopWindowTreeHostX11::GetModalDialog() {
+  return modal_dialog_xid_;
+}
+
+void DesktopWindowTreeHostX11::DisableEventListening(XID dialog) {
+  DCHECK(modal_dialog_xid_);
+  modal_dialog_xid_ = dialog;
+  // ScopedWindowTargeter is used to temporarily replace the event-targeter
+  // with NullEventTargeter to make the dialog modal.
+  targeter_for_modal_.reset(new aura::ScopedWindowTargeter(window(),
+      scoped_ptr<ui::EventTargeter>(new ui::NullEventTargeter)));
+}
+
+void DesktopWindowTreeHostX11::EnableEventListening() {
+  DCHECK(!modal_dialog_xid_);
+  modal_dialog_xid_ = 0;
+  targeter_for_modal_.reset();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopWindowTreeHost, public:
 
 // static
 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopWindowTreeHostX11(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 // static
 ui::NativeTheme* DesktopWindowTreeHost::GetNativeTheme(aura::Window* window) {
   const views::LinuxUI* linux_ui = views::LinuxUI::instance();
   if (linux_ui) {
     ui::NativeTheme* native_theme = linux_ui->GetNativeTheme(window);
     if (native_theme)
       return native_theme;
   }
 
   return ui::NativeTheme::instance();
 }
 
 }  // namespace views