DOMStorageContextImpl that's implemented in terms of the new dom_storage classes. Also compile out existing tests that no longer apply when ENABLE_NEW_DOM_STORAGE_BACKEND is defined.

BUG=106763
Review URL: https://chromiumcodereview.appspot.com/9695013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@127573 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 106 insertions, 12 deletions

diff --git a/webkit/dom_storage/dom_storage_area.cc b/webkit/dom_storage/dom_storage_area.cc
index 79de209..41325f7 100644
--- a/webkit/dom_storage/dom_storage_area.cc
+++ b/webkit/dom_storage/dom_storage_area.cc
@@ -16,6 +16,20 @@
 
 namespace dom_storage {
 
+// static
+const FilePath::CharType DomStorageArea::kDatabaseFileExtension[] =
+    FILE_PATH_LITERAL(".localstorage");
+
+// static
+FilePath DomStorageArea::DatabaseFileNameFromOrigin(const GURL& origin) {
+  std::string filename = fileapi::GetOriginIdentifierFromURL(origin);
+  // There is no FilePath.AppendExtension() method, so start with just the
+  // extension as the filename, and then InsertBeforeExtension the desired
+  // name.
+  return FilePath().Append(kDatabaseFileExtension).
+      InsertBeforeExtensionASCII(filename);
+}
+
 DomStorageArea::DomStorageArea(
     int64 namespace_id, const GURL& origin,
     const FilePath& directory, DomStorageTaskRunner* task_runner)
@@ -164,11 +178,4 @@ void DomStorageArea::CommitChanges() {
   commit_in_flight_ = false;
 }
 
-// static
-FilePath DomStorageArea::DatabaseFileNameFromOrigin(const GURL& origin) {
-  std::string filename = fileapi::GetOriginIdentifierFromURL(origin)
-      + ".localstorage";
-  return FilePath().AppendASCII(filename);
-}
-
 }  // namespace dom_storage
diff --git a/webkit/dom_storage/dom_storage_area.h b/webkit/dom_storage/dom_storage_area.h
index ba26d60..fba1a7f 100644
--- a/webkit/dom_storage/dom_storage_area.h
+++ b/webkit/dom_storage/dom_storage_area.h
@@ -27,6 +27,9 @@ class DomStorageArea
     : public base::RefCountedThreadSafe<DomStorageArea> {
 
  public:
+  static const FilePath::CharType kDatabaseFileExtension[];
+  static FilePath DatabaseFileNameFromOrigin(const GURL& origin);
+
   DomStorageArea(int64 namespace_id,
                  const GURL& origin,
                  const FilePath& directory,
@@ -60,8 +63,6 @@ class DomStorageArea
   void ScheduleCommitChanges();
   void CommitChanges();
 
-  static FilePath DatabaseFileNameFromOrigin(const GURL& origin);
-
   ~DomStorageArea();
 
   int64 namespace_id_;
diff --git a/webkit/dom_storage/dom_storage_context.cc b/webkit/dom_storage/dom_storage_context.cc
index 21d2f8c..698f37b 100644
--- a/webkit/dom_storage/dom_storage_context.cc
+++ b/webkit/dom_storage/dom_storage_context.cc
@@ -6,20 +6,33 @@
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/file_util.h"
 #include "base/time.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
+#include "webkit/dom_storage/dom_storage_area.h"
 #include "webkit/dom_storage/dom_storage_namespace.h"
 #include "webkit/dom_storage/dom_storage_task_runner.h"
 #include "webkit/dom_storage/dom_storage_types.h"
+#include "webkit/glue/webkit_glue.h"
 #include "webkit/quota/special_storage_policy.h"
 
+using file_util::FileEnumerator;
+
 namespace dom_storage {
 
+DomStorageContext::UsageInfo::UsageInfo() {}
+DomStorageContext::UsageInfo::~UsageInfo() {}
+
 DomStorageContext::DomStorageContext(
     const FilePath& directory,
     quota::SpecialStoragePolicy* special_storage_policy,
     DomStorageTaskRunner* task_runner)
     : directory_(directory),
-      task_runner_(task_runner) {
+      task_runner_(task_runner),
+      clear_local_state_(false),
+      save_session_state_(false),
+      special_storage_policy_(special_storage_policy) {
   // AtomicSequenceNum starts at 0 but we want to start session
   // namespace ids at one since zero is reserved for the
   // kLocalStorageNamespaceId.
@@ -44,6 +57,45 @@ DomStorageNamespace* DomStorageContext::GetStorageNamespace(
   return found->second;
 }
 
+void DomStorageContext::GetUsageInfo(std::vector<UsageInfo>* infos) {
+  FileEnumerator enumerator(directory_, false, FileEnumerator::FILES);
+  for (FilePath path = enumerator.Next(); !path.empty();
+       path = enumerator.Next()) {
+    if (path.MatchesExtension(DomStorageArea::kDatabaseFileExtension)) {
+      UsageInfo info;
+
+      // Extract origin id from the path and construct a GURL.
+      WebKit::WebString origin_id = webkit_glue::FilePathToWebString(
+          path.BaseName().RemoveExtension());
+      info.origin = GURL(WebKit::WebSecurityOrigin::
+          createFromDatabaseIdentifier(origin_id).toString());
+
+      FileEnumerator::FindInfo find_info;
+      enumerator.GetFindInfo(&find_info);
+      info.data_size = FileEnumerator::GetFilesize(find_info);
+      info.last_modified = FileEnumerator::GetLastModifiedTime(find_info);
+
+      infos->push_back(info);
+    }
+  }
+}
+
+void DomStorageContext::DeleteOrigin(const GURL& origin) {
+  // TODO(michaeln): write me
+}
+
+void DomStorageContext::DeleteDataModifiedSince(const base::Time& cutoff) {
+  // TODO(michaeln): write me
+}
+
+void DomStorageContext::PurgeMemory() {
+  // TODO(michaeln): write me
+}
+
+void DomStorageContext::Shutdown() {
+  // TODO(michaeln): write me
+}
+
 void DomStorageContext::AddEventObserver(EventObserver* observer) {
   event_observers_.AddObserver(observer);
 }
diff --git a/webkit/dom_storage/dom_storage_context.h b/webkit/dom_storage/dom_storage_context.h
index fe17eec..484d8ac 100644
--- a/webkit/dom_storage/dom_storage_context.h
+++ b/webkit/dom_storage/dom_storage_context.h
@@ -7,15 +7,16 @@
 #pragma once
 
 #include <map>
+#include <vector>
 
 #include "base/atomic_sequence_num.h"
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
+#include "googleurl/src/gurl.h"
 
 class FilePath;
-class GURL;
 class NullableString16;
 
 namespace base {
@@ -55,6 +56,15 @@ class DomStorageTaskRunner;
 class DomStorageContext
     : public base::RefCountedThreadSafe<DomStorageContext> {
  public:
+  struct UsageInfo {
+    GURL origin;
+    size_t data_size;
+    base::Time last_modified;
+
+    UsageInfo();
+    ~UsageInfo();
+  };
+
   // An interface for observing LocalStorage events on the
   // background thread.
   class EventObserver {
@@ -79,9 +89,29 @@ class DomStorageContext
   DomStorageContext(const FilePath& directory,  // empty for incognito profiles
                     quota::SpecialStoragePolicy* special_storage_policy,
                     DomStorageTaskRunner* task_runner);
+  const FilePath& directory() const { return directory_; }
   DomStorageTaskRunner* task_runner() const { return task_runner_; }
   DomStorageNamespace* GetStorageNamespace(int64 namespace_id);
 
+  void GetUsageInfo(std::vector<UsageInfo>* info);
+  void DeleteOrigin(const GURL& origin);
+  void DeleteDataModifiedSince(const base::Time& cutoff);
+  void PurgeMemory();
+
+  // Used by content settings to alter the behavior around
+  // what data to keep and what data to discard at shutdown.
+  // The policy is not so straight forward to describe, see
+  // the implementation for details.
+  void SetClearLocalState(bool clear_local_state) {
+    clear_local_state_ = clear_local_state;
+  }
+  void SaveSessionState() {
+    save_session_state_ = true;
+  }
+
+  // Called when the BrowserContext/Profile is going away.
+  void Shutdown();
+
   // Methods to add, remove, and notify EventObservers.
   void AddEventObserver(EventObserver* observer);
   void RemoveEventObserver(EventObserver* observer);
@@ -121,7 +151,7 @@ class DomStorageContext
   StorageNamespaceMap namespaces_;
 
   // Where localstorage data is stored, maybe empty for the incognito use case.
-  FilePath directory_;
+  const FilePath directory_;
 
   // Used to schedule sequenced background tasks.
   scoped_refptr<DomStorageTaskRunner> task_runner_;
@@ -132,6 +162,10 @@ class DomStorageContext
   // We use a 32 bit identifier for per tab storage sessions.
   // At a tab per second, this range is large enough for 68 years.
   base::AtomicSequenceNumber session_id_sequence_;
+
+  bool clear_local_state_;
+  bool save_session_state_;
+  scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy_;
 };
 
 }  // namespace dom_storage