Set version field when changes are made to enhanced bookmarks.

Moves meta info helper functions into a new class EnhancedBookmarkModel,
that writes the version field whenever other fields are modified.
BUG=404227

Review URL: https://codereview.chromium.org/476573004

Cr-Commit-Position: refs/heads/master@{#294028}

1 files changed, 129 insertions, 0 deletions

diff --git a/components/enhanced_bookmarks/enhanced_bookmark_model.h b/components/enhanced_bookmarks/enhanced_bookmark_model.h
new file mode 100644
index 0000000..d89f07f
--- /dev/null
+++ b/components/enhanced_bookmarks/enhanced_bookmark_model.h
@@ -0,0 +1,129 @@
+// 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 COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_MODEL_H_
+#define COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_MODEL_H_
+
+#include <string>
+
+#include "base/strings/string16.h"
+#include "components/bookmarks/browser/bookmark_node.h"
+#include "components/keyed_service/core/keyed_service.h"
+
+namespace base {
+class Time;
+}  // namespace base
+
+class BookmarkModel;
+class GURL;
+
+namespace enhanced_bookmarks {
+// Wrapper around BookmarkModel providing utility functions for enhanced
+// bookmarks.
+class EnhancedBookmarkModel : public KeyedService {
+ public:
+  EnhancedBookmarkModel(BookmarkModel* bookmark_model,
+                        const std::string& version);
+  virtual ~EnhancedBookmarkModel();
+
+  // Moves |node| to |new_parent| and inserts it at the given |index|.
+  void Move(const BookmarkNode* node,
+            const BookmarkNode* new_parent,
+            int index);
+
+  // Adds a new folder node at the specified position.
+  const BookmarkNode* AddFolder(const BookmarkNode* parent,
+                                int index,
+                                const base::string16& title);
+
+  // Adds a url at the specified position.
+  const BookmarkNode* AddURL(const BookmarkNode* parent,
+                             int index,
+                             const base::string16& title,
+                             const GURL& url,
+                             const base::Time& creation_time);
+
+  // Returns the remote id for a bookmark |node|.
+  std::string GetRemoteId(const BookmarkNode* node);
+
+  // Sets the description of a bookmark |node|.
+  void SetDescription(const BookmarkNode* node, const std::string& description);
+
+  // Returns the description of a bookmark |node|.
+  std::string GetDescription(const BookmarkNode* node);
+
+  // Sets the URL of an image representative of a bookmark |node|.
+  // Expects the URL to be valid and not empty.
+  // Returns true if the metainfo is successfully populated.
+  bool SetOriginalImage(const BookmarkNode* node,
+                        const GURL& url,
+                        int width,
+                        int height);
+
+  // Returns the url and dimensions of the original scraped image of a
+  // bookmark |node|.
+  // Returns true if the out variables are populated, false otherwise.
+  bool GetOriginalImage(const BookmarkNode* node,
+                        GURL* url,
+                        int* width,
+                        int* height);
+
+  // Returns the url and dimensions of the server provided thumbnail image for
+  // a given bookmark |node|.
+  // Returns true if the out variables are populated, false otherwise.
+  bool GetThumbnailImage(const BookmarkNode* node,
+                         GURL* url,
+                         int* width,
+                         int* height);
+
+  // Returns a brief server provided synopsis of the bookmarked page.
+  // Returns the empty string if the snippet could not be extracted.
+  std::string GetSnippet(const BookmarkNode* node);
+
+  // Sets a custom suffix to be added to the version field when writing meta
+  // info fields.
+  void SetVersionSuffix(const std::string& version_suffix);
+
+  // TODO(rfevang): Add method + enum for accessing/writing flags.
+
+  // Used for testing, simulates the process that creates the thumbnails. Will
+  // remove existing entries for empty urls or set them if the url is not empty.
+  // Expects valid or empty urls. Returns true if the metainfo is successfully
+  // populated.
+  // TODO(rfevang): Move this to a testing only utility file.
+  bool SetAllImages(const BookmarkNode* node,
+                    const GURL& image_url,
+                    int image_width,
+                    int image_height,
+                    const GURL& thumbnail_url,
+                    int thumbnail_width,
+                    int thumbnail_height);
+
+  // TODO(rfevang): Ideally nothing should need the underlying bookmark model.
+  // Remove when that is actually the case.
+  BookmarkModel* bookmark_model() { return bookmark_model_; }
+
+ private:
+  // Generates and sets a remote id for the given bookmark |node|.
+  // Returns the id set.
+  std::string SetRemoteId(const BookmarkNode* node);
+
+  // Helper method for setting a meta info field on a node. Also updates the
+  // version and userEdits fields.
+  void SetMetaInfo(const BookmarkNode* node,
+                   const std::string& field,
+                   const std::string& value,
+                   bool user_edit);
+
+  // Returns the version string to use when setting stars.version.
+  std::string GetVersionString();
+
+  BookmarkModel* bookmark_model_;
+  std::string version_;
+  std::string version_suffix_;
+};
+
+}  // namespace enhanced_bookmarks
+
+#endif  // COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_MODEL_H_