Add support for HTML5 databases to the cookie tree model.

BUG=34633
TEST=create local databases, open cookie tree view from prefs.

Review URL: http://codereview.chromium.org/596009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@38635 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 103 insertions, 0 deletions

diff --git a/chrome/browser/browsing_data_database_helper.h b/chrome/browser/browsing_data_database_helper.h
new file mode 100644
index 0000000..0b2440c
--- /dev/null
+++ b/chrome/browser/browsing_data_database_helper.h
@@ -0,0 +1,103 @@
+// Copyright (c) 2010 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 CHROME_BROWSER_BROWSING_DATA_DATABASE_HELPER_H_
+#define CHROME_BROWSER_BROWSING_DATA_DATABASE_HELPER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/scoped_ptr.h"
+#include "base/task.h"
+
+class Profile;
+
+// This class fetches database information in the FILE thread, and notifies the
+// UI thread upon completion.
+// A client of this class need to call StartFetching from the UI thread to
+// initiate the flow, and it'll be notified by the callback in its UI
+// thread at some later point.
+// The client must call CancelNotification() if it's destroyed before the
+// callback is notified.
+class BrowsingDataDatabaseHelper
+    : public base::RefCountedThreadSafe<BrowsingDataDatabaseHelper> {
+ public:
+  // Contains detailed information about a web database.
+  struct DatabaseInfo {
+    DatabaseInfo() {}
+    DatabaseInfo(const std::string& host,
+                 const std::string& database_name,
+                 const std::string& origin_identifier,
+                 const std::string& description,
+                 int64 size,
+                 base::Time last_modified)
+        : host(host),
+          database_name(database_name),
+          origin_identifier(origin_identifier),
+          description(description),
+          size(size),
+          last_modified(last_modified) {
+    }
+
+    std::string host;
+    std::string database_name;
+    std::string origin_identifier;
+    std::string description;
+    int64 size;
+    base::Time last_modified;
+  };
+
+  explicit BrowsingDataDatabaseHelper(Profile* profile);
+
+  // Starts the fetching process, which will notify its completion via
+  // callback.
+  // This must be called only in the UI thread.
+  virtual void StartFetching(
+      Callback1<const std::vector<DatabaseInfo>& >::Type* callback);
+
+  // Cancels the notification callback (i.e., the window that created it no
+  // longer exists).
+  // This must be called only in the UI thread.
+  virtual void CancelNotification();
+
+  // Requests a single database to be deleted in the FILE thread. This must be
+  // called in the UI thread.
+  virtual void DeleteDatabase(const std::string& origin,
+                              const std::string& name);
+
+ private:
+  friend class base::RefCountedThreadSafe<BrowsingDataDatabaseHelper>;
+  friend class MockBrowsingDataDatabaseHelper;
+
+  virtual ~BrowsingDataDatabaseHelper();
+
+  // Enumerates all databases. This must be called in the FILE thread.
+  void FetchDatabaseInfoInFileThread();
+
+  // Notifies the completion callback. This must be called in the UI thread.
+  void NotifyInUIThread();
+
+  // Delete a single database file. This must be called in the FILE thread.
+  void DeleteDatabaseInFileThread(const std::string& origin,
+                                  const std::string& name);
+
+  Profile* profile_;
+
+  // This only mutates on the UI thread.
+  scoped_ptr<Callback1<const std::vector<DatabaseInfo>& >::Type >
+      completion_callback_;
+
+  // Indicates whether or not we're currently fetching information:
+  // it's true when StartFetching() is called in the UI thread, and it's reset
+  // after we notify the callback in the UI thread.
+  // This only mutates on the UI thread.
+  bool is_fetching_;
+
+  // This only mutates in the FILE thread.
+  std::vector<DatabaseInfo> database_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowsingDataDatabaseHelper);
+};
+
+#endif  // CHROME_BROWSER_BROWSING_DATA_DATABASE_HELPER_H_