Change ui cursor identifiers to an enum class.

services/ui/public/interfaces/cursor/cursor_struct_traits.cc

 // Copyright 2017 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 "services/ui/public/interfaces/cursor/cursor_struct_traits.h"
 
 #include "base/time/time.h"
 #include "mojo/common/common_custom_types_struct_traits.h"
+#include "services/ui/public/interfaces/cursor/cursor.mojom.h"
 #include "skia/public/interfaces/bitmap_array_struct_traits.h"
 #include "skia/public/interfaces/bitmap_skbitmap_struct_traits.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/gfx/geometry/mojo/geometry_struct_traits.h"
 
 namespace mojo {
 
 // static
+ui::mojom::CursorType
+EnumTraits<ui::mojom::CursorType, ui::CursorType>::ToMojom(
+    ui::CursorType input) {
+  switch (input) {
+    case ui::CursorType::kNull:
+      return ui::mojom::CursorType::kNull;
+    case ui::CursorType::kPointer:
+      return ui::mojom::CursorType::kPointer;
+    case ui::CursorType::kCross:
+      return ui::mojom::CursorType::kCross;
+    case ui::CursorType::kHand:
+      return ui::mojom::CursorType::kHand;
+    case ui::CursorType::kIBeam:
+      return ui::mojom::CursorType::kIBeam;
+    case ui::CursorType::kWait:
+      return ui::mojom::CursorType::kWait;
+    case ui::CursorType::kHelp:
+      return ui::mojom::CursorType::kHelp;
+    case ui::CursorType::kEastResize:
+      return ui::mojom::CursorType::kEastResize;
+    case ui::CursorType::kNorthResize:
+      return ui::mojom::CursorType::kNorthResize;
+    case ui::CursorType::kNorthEastResize:
+      return ui::mojom::CursorType::kNorthEastResize;
+    case ui::CursorType::kNorthWestResize:
+      return ui::mojom::CursorType::kNorthWestResize;
+    case ui::CursorType::kSouthResize:
+      return ui::mojom::CursorType::kSouthResize;
+    case ui::CursorType::kSouthEastResize:
+      return ui::mojom::CursorType::kSouthEastResize;
+    case ui::CursorType::kSouthWestResize:
+      return ui::mojom::CursorType::kSouthWestResize;
+    case ui::CursorType::kWestResize:
+      return ui::mojom::CursorType::kWestResize;
+    case ui::CursorType::kNorthSouthResize:
+      return ui::mojom::CursorType::kNorthSouthResize;
+    case ui::CursorType::kEastWestResize:
+      return ui::mojom::CursorType::kEastWestResize;
+    case ui::CursorType::kNorthEastSouthWestResize:
+      return ui::mojom::CursorType::kNorthEastSouthWestResize;
+    case ui::CursorType::kNorthWestSouthEastResize:
+      return ui::mojom::CursorType::kNorthWestSouthEastResize;
+    case ui::CursorType::kColumnResize:
+      return ui::mojom::CursorType::kColumnResize;
+    case ui::CursorType::kRowResize:
+      return ui::mojom::CursorType::kRowResize;
+    case ui::CursorType::kMiddlePanning:
+      return ui::mojom::CursorType::kMiddlePanning;
+    case ui::CursorType::kEastPanning:
+      return ui::mojom::CursorType::kEastPanning;
+    case ui::CursorType::kNorthPanning:
+      return ui::mojom::CursorType::kNorthPanning;
+    case ui::CursorType::kNorthEastPanning:
+      return ui::mojom::CursorType::kNorthEastPanning;
+    case ui::CursorType::kNorthWestPanning:
+      return ui::mojom::CursorType::kNorthWestPanning;
+    case ui::CursorType::kSouthPanning:
+      return ui::mojom::CursorType::kSouthPanning;
+    case ui::CursorType::kSouthEastPanning:
+      return ui::mojom::CursorType::kSouthEastPanning;
+    case ui::CursorType::kSouthWestPanning:
+      return ui::mojom::CursorType::kSouthWestPanning;
+    case ui::CursorType::kWestPanning:
+      return ui::mojom::CursorType::kWestPanning;
+    case ui::CursorType::kMove:
+      return ui::mojom::CursorType::kMove;
+    case ui::CursorType::kVerticalText:
+      return ui::mojom::CursorType::kVerticalText;
+    case ui::CursorType::kCell:
+      return ui::mojom::CursorType::kCell;
+    case ui::CursorType::kContextMenu:
+      return ui::mojom::CursorType::kContextMenu;
+    case ui::CursorType::kAlias:
+      return ui::mojom::CursorType::kAlias;
+    case ui::CursorType::kProgress:
+      return ui::mojom::CursorType::kProgress;
+    case ui::CursorType::kNoDrop:
+      return ui::mojom::CursorType::kNoDrop;
+    case ui::CursorType::kCopy:
+      return ui::mojom::CursorType::kCopy;
+    case ui::CursorType::kNone:
+      return ui::mojom::CursorType::kNone;
+    case ui::CursorType::kNotAllowed:
+      return ui::mojom::CursorType::kNotAllowed;
+    case ui::CursorType::kZoomIn:
+      return ui::mojom::CursorType::kZoomIn;
+    case ui::CursorType::kZoomOut:
+      return ui::mojom::CursorType::kZoomOut;
+    case ui::CursorType::kGrab:
+      return ui::mojom::CursorType::kGrab;
+    case ui::CursorType::kGrabbing:
+      return ui::mojom::CursorType::kGrabbing;
+    case ui::CursorType::kCustom:
+      return ui::mojom::CursorType::kCustom;
+    case ui::CursorType::kDndNone:
+    case ui::CursorType::kDndMove:
+    case ui::CursorType::kDndCopy:
+    case ui::CursorType::kDndLink:
+      // The mojom version is the same as the restricted Webcursor constants;
+      // don't allow system cursors to be transmitted.
+      NOTREACHED();
+      return ui::mojom::CursorType::kNull;
+  }
+  NOTREACHED();
+  return ui::mojom::CursorType::kNull;
+}
+
+// static
+bool EnumTraits<ui::mojom::CursorType, ui::CursorType>::FromMojom(
+    ui::mojom::CursorType input,
+    ui::CursorType* out) {
+  switch (input) {
+    case ui::mojom::CursorType::kNull:
+      *out = ui::CursorType::kNull;
+      return true;
+    case ui::mojom::CursorType::kPointer:
+      *out = ui::CursorType::kPointer;
+      return true;
+    case ui::mojom::CursorType::kCross:
+      *out = ui::CursorType::kCross;
+      return true;
+    case ui::mojom::CursorType::kHand:
+      *out = ui::CursorType::kHand;
+      return true;
+    case ui::mojom::CursorType::kIBeam:
+      *out = ui::CursorType::kIBeam;
+      return true;
+    case ui::mojom::CursorType::kWait:
+      *out = ui::CursorType::kWait;
+      return true;
+    case ui::mojom::CursorType::kHelp:
+      *out = ui::CursorType::kHelp;
+      return true;
+    case ui::mojom::CursorType::kEastResize:
+      *out = ui::CursorType::kEastResize;
+      return true;
+    case ui::mojom::CursorType::kNorthResize:
+      *out = ui::CursorType::kNorthResize;
+      return true;
+    case ui::mojom::CursorType::kNorthEastResize:
+      *out = ui::CursorType::kNorthEastResize;
+      return true;
+    case ui::mojom::CursorType::kNorthWestResize:
+      *out = ui::CursorType::kNorthWestResize;
+      return true;
+    case ui::mojom::CursorType::kSouthResize:
+      *out = ui::CursorType::kSouthResize;
+      return true;
+    case ui::mojom::CursorType::kSouthEastResize:
+      *out = ui::CursorType::kSouthEastResize;
+      return true;
+    case ui::mojom::CursorType::kSouthWestResize:
+      *out = ui::CursorType::kSouthWestResize;
+      return true;
+    case ui::mojom::CursorType::kWestResize:
+      *out = ui::CursorType::kWestResize;
+      return true;
+    case ui::mojom::CursorType::kNorthSouthResize:
+      *out = ui::CursorType::kNorthSouthResize;
+      return true;
+    case ui::mojom::CursorType::kEastWestResize:
+      *out = ui::CursorType::kEastWestResize;
+      return true;
+    case ui::mojom::CursorType::kNorthEastSouthWestResize:
+      *out = ui::CursorType::kNorthEastSouthWestResize;
+      return true;
+    case ui::mojom::CursorType::kNorthWestSouthEastResize:
+      *out = ui::CursorType::kNorthWestSouthEastResize;
+      return true;
+    case ui::mojom::CursorType::kColumnResize:
+      *out = ui::CursorType::kColumnResize;
+      return true;
+    case ui::mojom::CursorType::kRowResize:
+      *out = ui::CursorType::kRowResize;
+      return true;
+    case ui::mojom::CursorType::kMiddlePanning:
+      *out = ui::CursorType::kMiddlePanning;
+      return true;
+    case ui::mojom::CursorType::kEastPanning:
+      *out = ui::CursorType::kEastPanning;
+      return true;
+    case ui::mojom::CursorType::kNorthPanning:
+      *out = ui::CursorType::kNorthPanning;
+      return true;
+    case ui::mojom::CursorType::kNorthEastPanning:
+      *out = ui::CursorType::kNorthEastPanning;
+      return true;
+    case ui::mojom::CursorType::kNorthWestPanning:
+      *out = ui::CursorType::kNorthWestPanning;
+      return true;
+    case ui::mojom::CursorType::kSouthPanning:
+      *out = ui::CursorType::kSouthPanning;
+      return true;
+    case ui::mojom::CursorType::kSouthEastPanning:
+      *out = ui::CursorType::kSouthEastPanning;
+      return true;
+    case ui::mojom::CursorType::kSouthWestPanning:
+      *out = ui::CursorType::kSouthWestPanning;
+      return true;
+    case ui::mojom::CursorType::kWestPanning:
+      *out = ui::CursorType::kWestPanning;
+      return true;
+    case ui::mojom::CursorType::kMove:
+      *out = ui::CursorType::kMove;
+      return true;
+    case ui::mojom::CursorType::kVerticalText:
+      *out = ui::CursorType::kVerticalText;
+      return true;
+    case ui::mojom::CursorType::kCell:
+      *out = ui::CursorType::kCell;
+      return true;
+    case ui::mojom::CursorType::kContextMenu:
+      *out = ui::CursorType::kContextMenu;
+      return true;
+    case ui::mojom::CursorType::kAlias:
+      *out = ui::CursorType::kAlias;
+      return true;
+    case ui::mojom::CursorType::kProgress:
+      *out = ui::CursorType::kProgress;
+      return true;
+    case ui::mojom::CursorType::kNoDrop:
+      *out = ui::CursorType::kNoDrop;
+      return true;
+    case ui::mojom::CursorType::kCopy:
+      *out = ui::CursorType::kCopy;
+      return true;
+    case ui::mojom::CursorType::kNone:
+      *out = ui::CursorType::kNone;
+      return true;
+    case ui::mojom::CursorType::kNotAllowed:
+      *out = ui::CursorType::kNotAllowed;
+      return true;
+    case ui::mojom::CursorType::kZoomIn:
+      *out = ui::CursorType::kZoomIn;
+      return true;
+    case ui::mojom::CursorType::kZoomOut:
+      *out = ui::CursorType::kZoomOut;
+      return true;
+    case ui::mojom::CursorType::kGrab:
+      *out = ui::CursorType::kGrab;
+      return true;
+    case ui::mojom::CursorType::kGrabbing:
+      *out = ui::CursorType::kGrabbing;
+      return true;
+    case ui::mojom::CursorType::kCustom:
+      *out = ui::CursorType::kCustom;
+      return true;
+  }
+
+  NOTREACHED();
+  return false;
+}
+
+// static
 const base::TimeDelta&
 StructTraits<ui::mojom::CursorDataDataView, ui::CursorData>::frame_delay(
     const ui::CursorData& c) {
   return c.frame_delay();
 }
 
 // static
 const gfx::Point&
 StructTraits<ui::mojom::CursorDataDataView, ui::CursorData>::hotspot_in_pixels(
     const ui::CursorData& c) {
   return c.hotspot_in_pixels();
 }
 
 // static
 const std::vector<SkBitmap>&
 StructTraits<ui::mojom::CursorDataDataView, ui::CursorData>::cursor_frames(
     const ui::CursorData& c) {
   return c.cursor_frames();
 }
 
 // static
 bool StructTraits<ui::mojom::CursorDataDataView, ui::CursorData>::Read(
     ui::mojom::CursorDataDataView data,
     ui::CursorData* out) {
-  ui::mojom::CursorType type = data.cursor_type();
-  if (type != ui::mojom::CursorType::CUSTOM) {
-    *out = ui::CursorData(static_cast<int>(type));
+  ui::CursorType type;
+  if (!data.ReadCursorType(&type))
+    return false;
+
+  if (type != ui::CursorType::kCustom) {
+    *out = ui::CursorData(type);
     return true;
   }
 
   gfx::Point hotspot_in_pixels;
   std::vector<SkBitmap> cursor_frames;
   float scale_factor = data.scale_factor();
   base::TimeDelta frame_delay;
 
   if (!data.ReadHotspotInPixels(&hotspot_in_pixels) ||
       !data.ReadCursorFrames(&cursor_frames) ||
       !data.ReadFrameDelay(&frame_delay)) {
     return false;
   }
 
   *out = ui::CursorData(hotspot_in_pixels, cursor_frames, scale_factor,
                         frame_delay);
   return true;
 }
 
 }  // namespace mojo