Make File-Picker modal on Linux

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
index c9d3f3a67b037de6fff4c1dd5ce8ba40d5a23d95..03f4685fdaa139f6e10faaf309182bb9de6758d7 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
@@ -28,6 +28,7 @@
 #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"
@@ -172,7 +173,8 @@ DesktopWindowTreeHostX11::DesktopWindowTreeHostX11(
       window_parent_(NULL),
       custom_window_shape_(false),
       urgency_hint_set_(false),
-      close_widget_factory_(this) {
+      close_widget_factory_(this),
+      modal_dialog_xid_(0) {
 }
 
 DesktopWindowTreeHostX11::~DesktopWindowTreeHostX11() {
@@ -2027,6 +2029,23 @@ gfx::Rect DesktopWindowTreeHostX11::ToPixelRect(
   return gfx::ToEnclosingRect(rect_in_pixels);
 }
 
+XID DesktopWindowTreeHostX11::GetModalDialog() {
+  return modal_dialog_xid_;
+}
+
+void DesktopWindowTreeHostX11::DisableEventListening(XID dialog) {
+  modal_dialog_xid_ = dialog;

[sadrul, 2015/06/30 17:30:56]

DCHECK here that modal_dialog_xid_ is None.

[joone, 2015/07/01 03:16:06]

Done.

+  // ScopedWindowTargeter is used to temporarily replace the event-targeter
+  // with NullEventTargeter to make the dialog modal.
+  scoped_targeter_.reset(new aura::ScopedWindowTargeter(window(),
+      scoped_ptr<ui::EventTargeter>(new ui::NullEventTargeter)));
+}
+
+void DesktopWindowTreeHostX11::EnableEventListening() {
+  modal_dialog_xid_ = 0;

[sadrul, 2015/06/30 17:30:56]

DCHECK here that modal_dialog_xid_ != None

[joone, 2015/07/01 03:16:06]

Done.

+  scoped_targeter_.reset();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopWindowTreeHost, public: