Pointer/hover media query support: platform-independent changes

content/public/common/web_preferences.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_
 #define CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 21 matching lines @@
   EDITING_BEHAVIOR_LAST = EDITING_BEHAVIOR_ANDROID
 };
 
 enum V8CacheOptions {
   V8_CACHE_OPTIONS_OFF,
   V8_CACHE_OPTIONS_PARSE,
   V8_CACHE_OPTIONS_CODE,
   V8_CACHE_OPTIONS_LAST = V8_CACHE_OPTIONS_CODE
 };
 
+// Bit field values indicating what kind of pointer types are available. These
+// enum must match blink::WebSettings::PointerType enums.
+enum PointerType {
+  POINTER_TYPE_NONE = 1,

[jdduke (slow), 2014/11/11 01:17:54]

So just to be clear, are we saying there's no benefit in referencing these enums
from ui, instead duplicating theme here? I can understand duplicated copies
between blink/content, but between ui/blink/content it's getting rather
unfortunate.

[mustaq, 2014/11/11 15:41:41]

Done removing the types from here.

+  POINTER_TYPE_FIRST = POINTER_TYPE_NONE,
+  POINTER_TYPE_COARSE = 2,
+  POINTER_TYPE_FINE = 4,
+  POINTER_TYPE_LAST = POINTER_TYPE_FINE
+};
+
+// Bit field values indicating what kind of pointer types are available. These
+// enums must match blink::WebSettings::HoverType enums.
+enum HoverType {
+  HOVER_TYPE_NONE = 1,
+  HOVER_TYPE_FIRST = HOVER_TYPE_NONE,
+  // Indicates that the primary pointing system can hover, but it requires a
+  // significant action on the user’s part. e.g. hover on “long press”.
+  HOVER_TYPE_ON_DEMAND = 2,
+  HOVER_TYPE_HOVER = 4,
+  HOVER_TYPE_LAST = HOVER_TYPE_HOVER
+};
+
 // The ISO 15924 script code for undetermined script aka Common. It's the
 // default used on WebKit's side to get/set a font setting when no script is
 // specified.
 CONTENT_EXPORT extern const char kCommonScript[];
 
 // A struct for managing blink's settings.
 //
 // Adding new values to this class probably involves updating
 // blink::WebSettings, content/common/view_messages.h, browser/tab_contents/
 // render_view_host_delegate_helper.cc, and browser/profiles/profile.cc.
@@ skipping 64 matching lines @@
   bool text_blobs_enabled;
   bool allow_displaying_insecure_content;
   bool allow_running_insecure_content;
   bool password_echo_enabled;
   bool should_print_backgrounds;
   bool should_clear_document_background;
   bool enable_scroll_animator;
   bool css_variables_enabled;
   bool region_based_columns_enabled;
   bool touch_enabled;
+  // TODO(mustaq): Nuke when the new API is ready
   bool device_supports_touch;
+  // TODO(mustaq): Nuke when the new API is ready
   bool device_supports_mouse;
   bool touch_adjustment_enabled;
   int pointer_events_max_touch_points;
+  int available_pointer_types;
+  PointerType primary_pointer_type;
+  int available_hover_types;
+  HoverType primary_hover_type;
   bool sync_xhr_in_documents_enabled;
   bool deferred_image_decoding_enabled;
   bool should_respect_image_orientation;
   int number_of_cpu_cores;
   EditingBehavior editing_behavior;
   bool supports_multiple_windows;
   bool viewport_enabled;
   bool viewport_meta_enabled;
   bool main_frame_resizes_are_orientation_changes;
   bool initialize_at_minimum_page_scale;
@@ skipping 44 matching lines @@
   // We try to keep the default values the same as the default values in
   // chrome, except for the cases where it would require lots of extra work for
   // the embedder to use the same default value.
   WebPreferences();
   ~WebPreferences();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_