Pointer/hover media query support: platform-dependent changes #2

ui/base/touch/touch_device_aurax11.cc

Index: ui/base/touch/touch_device_aurax11.cc
diff --git a/ui/base/touch/touch_device_aurax11.cc b/ui/base/touch/touch_device_aurax11.cc
index 52ecc75787e04ba02f3b3a9097deb4ec361cf395..8d76a1f0f0774fc77de4a1a55b7a789a01f01da7 100644
--- a/ui/base/touch/touch_device_aurax11.cc
+++ b/ui/base/touch/touch_device_aurax11.cc
@@ -3,6 +3,8 @@
 // found in the LICENSE file.
 
 #include "ui/base/touch/touch_device.h"
+#include "base/logging.h"
+#include "ui/events/devices/device_data_manager.h"
 #include "ui/events/devices/x11/touch_factory_x11.h"
 
 namespace ui {
@@ -15,23 +17,57 @@ int MaxTouchPoints() {
   return ui::TouchFactory::GetInstance()->GetMaxTouchPoints();
 }
 
+// FIXME: Use mouse detection logic. crbug.com/440503
 int GetAvailablePointerTypes() {
-  // TODO(mustaq): Replace the stub below
-  return POINTER_TYPE_NONE;
+  int available_pointer_types = 0;
+
+  if (ui::DeviceDataManager::GetInstance()->keyboard_devices().size() > 0)
+      available_pointer_types |= POINTER_TYPE_NONE;
+
+  // Assume either a touch-device or a mouse is there
+  if (IsTouchDevicePresent())
+    available_pointer_types |= POINTER_TYPE_COARSE;
+  else
+    available_pointer_types |= POINTER_TYPE_FINE;
+
+  DCHECK(available_pointer_types);
+  return available_pointer_types;
 }
 
 PointerType GetPrimaryPointerType() {
-  // TODO(mustaq): Replace the stub below
+  int available_pointer_types = GetAvailablePointerTypes();
+  if (available_pointer_types & POINTER_TYPE_COARSE)
+    return POINTER_TYPE_COARSE;
+  if (available_pointer_types & POINTER_TYPE_FINE)
+    return POINTER_TYPE_FINE;
+  DCHECK(available_pointer_types & POINTER_TYPE_NONE);
   return POINTER_TYPE_NONE;
 }
 
+// FIXME: Use mouse detection logic. crbug.com/440503
 int GetAvailableHoverTypes() {
-  // TODO(mustaq): Replace the stub below
-  return HOVER_TYPE_NONE;
+  int available_hover_types = 0;
+
+  if (ui::DeviceDataManager::GetInstance()->keyboard_devices().size() > 0)
+      available_hover_types |= HOVER_TYPE_NONE;
+
+  // Assume either a touch-device or a mouse is there
+  if (IsTouchDevicePresent())
+    available_hover_types |= HOVER_TYPE_ON_DEMAND;
+  else
+    available_hover_types |= HOVER_TYPE_HOVER;
+
+  DCHECK(available_hover_types);
+  return available_hover_types;
 }
 
 HoverType GetPrimaryHoverType() {
-  // TODO(mustaq): Replace the stub below
+  int available_hover_types = GetAvailableHoverTypes();
+  if (available_hover_types & HOVER_TYPE_ON_DEMAND)
+    return HOVER_TYPE_ON_DEMAND;
+  if (available_hover_types & HOVER_TYPE_HOVER)
+    return HOVER_TYPE_HOVER;
+  DCHECK(available_hover_types & HOVER_TYPE_NONE);
   return HOVER_TYPE_NONE;
 }