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::CURSOR_NULL:
+      return ui::mojom::CursorType::CURSOR_NULL;
+    case ui::CursorType::POINTER:
+      return ui::mojom::CursorType::POINTER;
+    case ui::CursorType::CROSS:
+      return ui::mojom::CursorType::CROSS;
+    case ui::CursorType::HAND:
+      return ui::mojom::CursorType::HAND;
+    case ui::CursorType::IBEAM:
+      return ui::mojom::CursorType::IBEAM;
+    case ui::CursorType::WAIT:
+      return ui::mojom::CursorType::WAIT;
+    case ui::CursorType::HELP:
+      return ui::mojom::CursorType::HELP;
+    case ui::CursorType::EAST_RESIZE:
+      return ui::mojom::CursorType::EAST_RESIZE;
+    case ui::CursorType::NORTH_RESIZE:
+      return ui::mojom::CursorType::NORTH_RESIZE;
+    case ui::CursorType::NORTH_EAST_RESIZE:
+      return ui::mojom::CursorType::NORTH_EAST_RESIZE;
+    case ui::CursorType::NORTH_WEST_RESIZE:
+      return ui::mojom::CursorType::NORTH_WEST_RESIZE;
+    case ui::CursorType::SOUTH_RESIZE:
+      return ui::mojom::CursorType::SOUTH_RESIZE;
+    case ui::CursorType::SOUTH_EAST_RESIZE:
+      return ui::mojom::CursorType::SOUTH_EAST_RESIZE;
+    case ui::CursorType::SOUTH_WEST_RESIZE:
+      return ui::mojom::CursorType::SOUTH_WEST_RESIZE;
+    case ui::CursorType::WEST_RESIZE:
+      return ui::mojom::CursorType::WEST_RESIZE;
+    case ui::CursorType::NORTH_SOUTH_RESIZE:
+      return ui::mojom::CursorType::NORTH_SOUTH_RESIZE;
+    case ui::CursorType::EAST_WEST_RESIZE:
+      return ui::mojom::CursorType::EAST_WEST_RESIZE;
+    case ui::CursorType::NORTH_EAST_SOUTH_WEST_RESIZE:
+      return ui::mojom::CursorType::NORTH_EAST_SOUTH_WEST_RESIZE;
+    case ui::CursorType::NORTH_WEST_SOUTH_EAST_RESIZE:
+      return ui::mojom::CursorType::NORTH_WEST_SOUTH_EAST_RESIZE;
+    case ui::CursorType::COLUMN_RESIZE:
+      return ui::mojom::CursorType::COLUMN_RESIZE;
+    case ui::CursorType::ROW_RESIZE:
+      return ui::mojom::CursorType::ROW_RESIZE;
+    case ui::CursorType::MIDDLE_PANNING:
+      return ui::mojom::CursorType::MIDDLE_PANNING;
+    case ui::CursorType::EAST_PANNING:
+      return ui::mojom::CursorType::EAST_PANNING;
+    case ui::CursorType::NORTH_PANNING:
+      return ui::mojom::CursorType::NORTH_PANNING;
+    case ui::CursorType::NORTH_EAST_PANNING:
+      return ui::mojom::CursorType::NORTH_EAST_PANNING;
+    case ui::CursorType::NORTH_WEST_PANNING:
+      return ui::mojom::CursorType::NORTH_WEST_PANNING;
+    case ui::CursorType::SOUTH_PANNING:
+      return ui::mojom::CursorType::SOUTH_PANNING;
+    case ui::CursorType::SOUTH_EAST_PANNING:
+      return ui::mojom::CursorType::SOUTH_EAST_PANNING;
+    case ui::CursorType::SOUTH_WEST_PANNING:
+      return ui::mojom::CursorType::SOUTH_WEST_PANNING;
+    case ui::CursorType::WEST_PANNING:
+      return ui::mojom::CursorType::WEST_PANNING;
+    case ui::CursorType::MOVE:
+      return ui::mojom::CursorType::MOVE;
+    case ui::CursorType::VERTICAL_TEXT:
+      return ui::mojom::CursorType::VERTICAL_TEXT;
+    case ui::CursorType::CELL:
+      return ui::mojom::CursorType::CELL;
+    case ui::CursorType::CONTEXT_MENU:
+      return ui::mojom::CursorType::CONTEXT_MENU;
+    case ui::CursorType::ALIAS:
+      return ui::mojom::CursorType::ALIAS;
+    case ui::CursorType::PROGRESS:
+      return ui::mojom::CursorType::PROGRESS;
+    case ui::CursorType::NO_DROP:
+      return ui::mojom::CursorType::NO_DROP;
+    case ui::CursorType::COPY:
+      return ui::mojom::CursorType::COPY;
+    case ui::CursorType::NONE:
+      return ui::mojom::CursorType::NONE;
+    case ui::CursorType::NOT_ALLOWED:
+      return ui::mojom::CursorType::NOT_ALLOWED;
+    case ui::CursorType::ZOOM_IN:
+      return ui::mojom::CursorType::ZOOM_IN;
+    case ui::CursorType::ZOOM_OUT:
+      return ui::mojom::CursorType::ZOOM_OUT;
+    case ui::CursorType::GRAB:
+      return ui::mojom::CursorType::GRAB;
+    case ui::CursorType::GRABBING:
+      return ui::mojom::CursorType::GRABBING;
+    case ui::CursorType::CUSTOM:
+      return ui::mojom::CursorType::CUSTOM;
+    case ui::CursorType::DND_NONE:
+    case ui::CursorType::DND_MOVE:
+    case ui::CursorType::DND_COPY:
+    case ui::CursorType::DND_LINK:
+      // The mojom version is the same as the restricted Webcursor constants;
+      // don't allow system cursors to be transmitted.
+      NOTREACHED();
+      return ui::mojom::CursorType::CURSOR_NULL;
+  }
+  NOTREACHED();
+  return ui::mojom::CursorType::CURSOR_NULL;
+}
+
+// static
+bool EnumTraits<ui::mojom::CursorType, ui::CursorType>::FromMojom(
+    ui::mojom::CursorType input,
+    ui::CursorType* out) {
+  switch (input) {
+    case ui::mojom::CursorType::CURSOR_NULL:
+      *out = ui::CursorType::CURSOR_NULL;
+      return true;
+    case ui::mojom::CursorType::POINTER:
+      *out = ui::CursorType::POINTER;
+      return true;
+    case ui::mojom::CursorType::CROSS:
+      *out = ui::CursorType::CROSS;
+      return true;
+    case ui::mojom::CursorType::HAND:
+      *out = ui::CursorType::HAND;
+      return true;
+    case ui::mojom::CursorType::IBEAM:
+      *out = ui::CursorType::IBEAM;
+      return true;
+    case ui::mojom::CursorType::WAIT:
+      *out = ui::CursorType::WAIT;
+      return true;
+    case ui::mojom::CursorType::HELP:
+      *out = ui::CursorType::HELP;
+      return true;
+    case ui::mojom::CursorType::EAST_RESIZE:
+      *out = ui::CursorType::EAST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::NORTH_RESIZE:
+      *out = ui::CursorType::NORTH_RESIZE;
+      return true;
+    case ui::mojom::CursorType::NORTH_EAST_RESIZE:
+      *out = ui::CursorType::NORTH_EAST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::NORTH_WEST_RESIZE:
+      *out = ui::CursorType::NORTH_WEST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::SOUTH_RESIZE:
+      *out = ui::CursorType::SOUTH_RESIZE;
+      return true;
+    case ui::mojom::CursorType::SOUTH_EAST_RESIZE:
+      *out = ui::CursorType::SOUTH_EAST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::SOUTH_WEST_RESIZE:
+      *out = ui::CursorType::SOUTH_WEST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::WEST_RESIZE:
+      *out = ui::CursorType::WEST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::NORTH_SOUTH_RESIZE:
+      *out = ui::CursorType::NORTH_SOUTH_RESIZE;
+      return true;
+    case ui::mojom::CursorType::EAST_WEST_RESIZE:
+      *out = ui::CursorType::EAST_WEST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::NORTH_EAST_SOUTH_WEST_RESIZE:
+      *out = ui::CursorType::NORTH_EAST_SOUTH_WEST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::NORTH_WEST_SOUTH_EAST_RESIZE:
+      *out = ui::CursorType::NORTH_WEST_SOUTH_EAST_RESIZE;
+      return true;
+    case ui::mojom::CursorType::COLUMN_RESIZE:
+      *out = ui::CursorType::COLUMN_RESIZE;
+      return true;
+    case ui::mojom::CursorType::ROW_RESIZE:
+      *out = ui::CursorType::ROW_RESIZE;
+      return true;
+    case ui::mojom::CursorType::MIDDLE_PANNING:
+      *out = ui::CursorType::MIDDLE_PANNING;
+      return true;
+    case ui::mojom::CursorType::EAST_PANNING:
+      *out = ui::CursorType::EAST_PANNING;
+      return true;
+    case ui::mojom::CursorType::NORTH_PANNING:
+      *out = ui::CursorType::NORTH_PANNING;
+      return true;
+    case ui::mojom::CursorType::NORTH_EAST_PANNING:
+      *out = ui::CursorType::NORTH_EAST_PANNING;
+      return true;
+    case ui::mojom::CursorType::NORTH_WEST_PANNING:
+      *out = ui::CursorType::NORTH_WEST_PANNING;
+      return true;
+    case ui::mojom::CursorType::SOUTH_PANNING:
+      *out = ui::CursorType::SOUTH_PANNING;
+      return true;
+    case ui::mojom::CursorType::SOUTH_EAST_PANNING:
+      *out = ui::CursorType::SOUTH_EAST_PANNING;
+      return true;
+    case ui::mojom::CursorType::SOUTH_WEST_PANNING:
+      *out = ui::CursorType::SOUTH_WEST_PANNING;
+      return true;
+    case ui::mojom::CursorType::WEST_PANNING:
+      *out = ui::CursorType::WEST_PANNING;
+      return true;
+    case ui::mojom::CursorType::MOVE:
+      *out = ui::CursorType::MOVE;
+      return true;
+    case ui::mojom::CursorType::VERTICAL_TEXT:
+      *out = ui::CursorType::VERTICAL_TEXT;
+      return true;
+    case ui::mojom::CursorType::CELL:
+      *out = ui::CursorType::CELL;
+      return true;
+    case ui::mojom::CursorType::CONTEXT_MENU:
+      *out = ui::CursorType::CONTEXT_MENU;
+      return true;
+    case ui::mojom::CursorType::ALIAS:
+      *out = ui::CursorType::ALIAS;
+      return true;
+    case ui::mojom::CursorType::PROGRESS:
+      *out = ui::CursorType::PROGRESS;
+      return true;
+    case ui::mojom::CursorType::NO_DROP:
+      *out = ui::CursorType::NO_DROP;
+      return true;
+    case ui::mojom::CursorType::COPY:
+      *out = ui::CursorType::COPY;
+      return true;
+    case ui::mojom::CursorType::NONE:
+      *out = ui::CursorType::NONE;
+      return true;
+    case ui::mojom::CursorType::NOT_ALLOWED:
+      *out = ui::CursorType::NOT_ALLOWED;
+      return true;
+    case ui::mojom::CursorType::ZOOM_IN:
+      *out = ui::CursorType::ZOOM_IN;
+      return true;
+    case ui::mojom::CursorType::ZOOM_OUT:
+      *out = ui::CursorType::ZOOM_OUT;
+      return true;
+    case ui::mojom::CursorType::GRAB:
+      *out = ui::CursorType::GRAB;
+      return true;
+    case ui::mojom::CursorType::GRABBING:
+      *out = ui::CursorType::GRABBING;
+      return true;
+    case ui::mojom::CursorType::CUSTOM:
+      *out = ui::CursorType::CUSTOM;
+      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::CUSTOM) {
+    *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