Componentize //chrome/browser/prefs/tracked.

chrome/browser/prefs/tracked/tracked_split_preference.cc

-// 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.
-
-#include "chrome/browser/prefs/tracked/tracked_split_preference.h"
-
-#include <vector>
-
-#include "base/logging.h"
-#include "base/values.h"
-#include "chrome/browser/prefs/tracked/pref_hash_store_transaction.h"
-#include "chrome/browser/prefs/tracked/tracked_preference_validation_delegate.h"
-
-TrackedSplitPreference::TrackedSplitPreference(
-    const std::string& pref_path,
-    size_t reporting_id,
-    size_t reporting_ids_count,
-    PrefHashFilter::EnforcementLevel enforcement_level,
-    PrefHashFilter::ValueType value_type,
-    TrackedPreferenceValidationDelegate* delegate)
-    : pref_path_(pref_path),
-      helper_(pref_path, reporting_id, reporting_ids_count, enforcement_level,
-              value_type),
-      delegate_(delegate) {
-}
-
-void TrackedSplitPreference::OnNewValue(
-    const base::Value* value,
-    PrefHashStoreTransaction* transaction) const {
-  const base::DictionaryValue* dict_value = NULL;
-  if (value && !value->GetAsDictionary(&dict_value)) {
-    NOTREACHED();
-    return;
-  }
-  transaction->StoreSplitHash(pref_path_, dict_value);
-}
-
-bool TrackedSplitPreference::EnforceAndReport(
-    base::DictionaryValue* pref_store_contents,
-    PrefHashStoreTransaction* transaction) const {
-  base::DictionaryValue* dict_value = NULL;
-  if (!pref_store_contents->GetDictionary(pref_path_, &dict_value) &&
-      pref_store_contents->Get(pref_path_, NULL)) {
-    // There should be a dictionary or nothing at |pref_path_|.
-    NOTREACHED();
-    return false;
-  }
-
-  std::vector<std::string> invalid_keys;
-  PrefHashStoreTransaction::ValueState value_state =
-      transaction->CheckSplitValue(pref_path_, dict_value, &invalid_keys);
-
-  if (value_state == PrefHashStoreTransaction::CHANGED)
-    helper_.ReportSplitPreferenceChangedCount(invalid_keys.size());
-
-  helper_.ReportValidationResult(value_state);
-
-  TrackedPreferenceHelper::ResetAction reset_action =
-      helper_.GetAction(value_state);
-  if (delegate_) {
-    delegate_->OnSplitPreferenceValidation(pref_path_, dict_value, invalid_keys,
-                                           value_state, helper_.IsPersonal());
-  }
-  helper_.ReportAction(reset_action);
-
-  bool was_reset = false;
-  if (reset_action == TrackedPreferenceHelper::DO_RESET) {
-    if (value_state == PrefHashStoreTransaction::CHANGED) {
-      DCHECK(!invalid_keys.empty());
-
-      for (std::vector<std::string>::const_iterator it =
-               invalid_keys.begin(); it != invalid_keys.end(); ++it) {
-        dict_value->Remove(*it, NULL);
-      }
-    } else {
-      pref_store_contents->RemovePath(pref_path_, NULL);
-    }
-    was_reset = true;
-  }
-
-  if (value_state != PrefHashStoreTransaction::UNCHANGED) {
-    // Store the hash for the new value (whether it was reset or not).
-    const base::DictionaryValue* new_dict_value = NULL;
-    pref_store_contents->GetDictionary(pref_path_, &new_dict_value);
-    transaction->StoreSplitHash(pref_path_, new_dict_value);
-  }
-
-  return was_reset;
-}