📰 Make the MORE button more configurable

components/ntp_snippets/category_info.h

 // Copyright 2016 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 COMPONENTS_NTP_SNIPPETS_CATEGORY_INFO_H_
 #define COMPONENTS_NTP_SNIPPETS_CATEGORY_INFO_H_
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
 
 namespace ntp_snippets {
 
 // On Android builds, a Java counterpart will be generated for this enum.
 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser.ntp.snippets
 enum class ContentSuggestionsCardLayout {
   // Uses all fields.
   FULL_CARD,
 
   // No snippet_text and no thumbnail image.
   MINIMAL_CARD
 };
 
 // Contains static meta information about a Category.
 class CategoryInfo {
  public:
   CategoryInfo(const base::string16& title,
                ContentSuggestionsCardLayout card_layout,
-               bool has_more_button,
+               bool has_more_action,
+               bool has_reload_action,
+               bool has_view_all_action,
                bool show_if_empty,
                const base::string16& no_suggestions_message);
-  CategoryInfo(CategoryInfo&&) = default;
-  CategoryInfo& operator=(CategoryInfo&&) = default;
-
+  CategoryInfo(CategoryInfo&&);
+  CategoryInfo& operator=(CategoryInfo&&);
   ~CategoryInfo();
 
   // Localized title of the category.
   const base::string16& title() const { return title_; }
 
   // Layout of the cards to be used to display suggestions in this category.
   ContentSuggestionsCardLayout card_layout() const { return card_layout_; }
 
-  // Whether the category should show a "More" button even if it's not empty
-  // (there's always a "More" or "Reload" button if it is empty). The button
-  // either triggers a fixed action (like opening a native page) or, if there
-  // is no such fixed action, it queries the provider for more suggestions.
-  // TODO(treib): Rename this to "always_show_more_button".
-  bool has_more_button() const { return has_more_button_; }
+  // Whether the category supports a "More" action, that triggers fetching more
+  // suggestions for the category, while keeping the current ones.
+  bool has_more_action() const { return has_more_action_; }
+
+  // Whether the category supports a "Reload" action, that triggers fetching new
+  // suggestions to replace the current ones.
+  bool has_reload_action() const { return has_reload_action_; }
+
+  // Whether the category supports a "ViewAll" action, that triggers displaying
+  // all the content related to the current categories.
+  bool has_view_all_action() const { return has_view_all_action_; }
 
   // Whether this category should be shown if it offers no suggestions.
   bool show_if_empty() const { return show_if_empty_; }
 
   // The message to show if there are no suggestions in this category. Note that
   // this matters even if |show_if_empty()| is false: The message still shows
   // up when the user dismisses all suggestions in the category.
   const base::string16& no_suggestions_message() const {
     return no_suggestions_message_;
   }
 
  private:
   base::string16 title_;
   ContentSuggestionsCardLayout card_layout_;
-  bool has_more_button_;
+
+  // Supported actions for the category.
+  bool has_more_action_;
+  bool has_reload_action_;
+  bool has_view_all_action_;
+
+  // Whether to show the category if a fetch returns no suggestions.
   bool show_if_empty_;
   base::string16 no_suggestions_message_;
 
   DISALLOW_COPY_AND_ASSIGN(CategoryInfo);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_CATEGORY_INFO_H_