Refactor ProfileInfoCache

chrome/browser/profiles/profile_info_util.cc

+// Copyright (c) 2011 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/profiles/profile_info_util.h"
+
+#include "base/format_macros.h"
+#include "base/rand_util.h"
+#include "base/string_number_conversions.h"
+#include "base/stringprintf.h"
+#include "base/utf_string_conversions.h"
+#include "grit/generated_resources.h"
+#include "grit/theme_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace {
+
+const int kDefaultAvatarIconResources[] = {
+  IDR_PROFILE_AVATAR_0,
+  IDR_PROFILE_AVATAR_1,
+  IDR_PROFILE_AVATAR_2,
+  IDR_PROFILE_AVATAR_3,
+  IDR_PROFILE_AVATAR_4,
+  IDR_PROFILE_AVATAR_5,
+  IDR_PROFILE_AVATAR_6,
+  IDR_PROFILE_AVATAR_7,
+  IDR_PROFILE_AVATAR_8,
+  IDR_PROFILE_AVATAR_9,
+  IDR_PROFILE_AVATAR_10,
+  IDR_PROFILE_AVATAR_11,
+  IDR_PROFILE_AVATAR_12,
+  IDR_PROFILE_AVATAR_13,
+  IDR_PROFILE_AVATAR_14,
+  IDR_PROFILE_AVATAR_15,
+  IDR_PROFILE_AVATAR_16,
+  IDR_PROFILE_AVATAR_17,
+  IDR_PROFILE_AVATAR_18,
+  IDR_PROFILE_AVATAR_19,
+  IDR_PROFILE_AVATAR_20,
+  IDR_PROFILE_AVATAR_21,
+  IDR_PROFILE_AVATAR_22,
+  IDR_PROFILE_AVATAR_23,
+  IDR_PROFILE_AVATAR_24,
+  IDR_PROFILE_AVATAR_25,
+};
+
+const size_t kDefaultAvatarIconsCount = arraysize(kDefaultAvatarIconResources);
+
+// The first 8 icons are generic.
+const size_t kGenericIconCount = 8;
+
+// First eight are generic icons, which use IDS_NUMBERED_PROFILE_NAME.
+const int kDefaultNames[] = {
+  IDS_DEFAULT_AVATAR_NAME_8,
+  IDS_DEFAULT_AVATAR_NAME_9,
+  IDS_DEFAULT_AVATAR_NAME_10,
+  IDS_DEFAULT_AVATAR_NAME_11,
+  IDS_DEFAULT_AVATAR_NAME_12,
+  IDS_DEFAULT_AVATAR_NAME_13,
+  IDS_DEFAULT_AVATAR_NAME_14,
+  IDS_DEFAULT_AVATAR_NAME_15,
+  IDS_DEFAULT_AVATAR_NAME_16,
+  IDS_DEFAULT_AVATAR_NAME_17,
+  IDS_DEFAULT_AVATAR_NAME_18,
+  IDS_DEFAULT_AVATAR_NAME_19,
+  IDS_DEFAULT_AVATAR_NAME_20,
+  IDS_DEFAULT_AVATAR_NAME_21,
+  IDS_DEFAULT_AVATAR_NAME_22,
+  IDS_DEFAULT_AVATAR_NAME_23,
+  IDS_DEFAULT_AVATAR_NAME_24,
+  IDS_DEFAULT_AVATAR_NAME_25
+};
+
+const char kDefaultUrlPrefix[] = "chrome://theme/IDR_PROFILE_AVATAR_";
+
+
+bool IconIndexIsUnique(
+    const std::vector<ProfileInfoEntry>& entries,
+    size_t icon_index) {
+  for (std::vector<ProfileInfoEntry>::const_iterator it = entries.begin();
+      it != entries.end(); ++it) {
+    if (it->icon_index() == icon_index)
+      return false;
+  }
+  return true;
+}
+
+// Tries to find an icon index that satisfies all the given conditions.
+// Returns true if an icon was found, false otherwise.
+bool ChooseAvatarIconIndexForNewProfile(
+    const std::vector<ProfileInfoEntry>& entries,
+    bool allow_generic_icon,
+    bool must_be_unique,
+    size_t* out_icon_index) {
+  size_t start = allow_generic_icon ? 0 : kGenericIconCount;
+  size_t end = profiles::GetDefaultAvatarIconCount();
+  size_t count = end - start;
+
+  int rand = base::RandInt(0, count);
+  for (size_t i = 0; i < count; ++i) {
+    size_t icon_index = start + (rand + i) %  count;
+    if (!must_be_unique || IconIndexIsUnique(entries, icon_index)) {
+      *out_icon_index = icon_index;
+      return true;
+    }
+  }
+
+  return false;
+}
+
+} // namespace
+
+namespace profiles {
+
+// Gets the number of default avatar icons that exist.
+size_t GetDefaultAvatarIconCount() {
+  return kDefaultAvatarIconsCount;
+}
+
+int GetDefaultAvatarIconResourceIDAtIndex(size_t index) {
+  DCHECK_LT(index, GetDefaultAvatarIconCount());
+  return kDefaultAvatarIconResources[index];
+}
+
+std::string GetDefaultAvatarIconUrl(size_t index) {
+  DCHECK_LT(index, kDefaultAvatarIconsCount);
+  return StringPrintf("%s%" PRIuS, kDefaultUrlPrefix, index);
+}
+
+bool IsDefaultAvatarIconUrl(const std::string& url,
+                            size_t* icon_index) {
+  DCHECK(icon_index);
+  if (url.find(kDefaultUrlPrefix) != 0)
+    return false;
+
+  int int_value = -1;
+  if (base::StringToInt(url.begin() + strlen(kDefaultUrlPrefix),
+                        url.end(),
+                        &int_value)) {
+    if (int_value < 0 ||
+        int_value >= static_cast<int>(kDefaultAvatarIconsCount))
+      return false;
+    *icon_index = int_value;
+    return true;
+  }
+
+  return false;
+}
+
+string16 ChooseNameForNewProfile(const std::vector<ProfileInfoEntry>& entries,
+                                 size_t icon_index) {
+  for (int name_index = 1; ; ++name_index) {
+    string16 name;
+    if (icon_index < kGenericIconCount) {
+      name = l10n_util::GetStringFUTF16Int(IDS_NUMBERED_PROFILE_NAME,
+                                           name_index);
+    } else {
+      name = l10n_util::GetStringUTF16(
+          kDefaultNames[icon_index - kGenericIconCount]);
+      if (name_index > 1)
+        name.append(UTF8ToUTF16(base::IntToString(name_index)));
+    }
+
+    // Loop through previously named profiles to ensure we're not duplicating.
+    bool name_found = false;
+    for (std::vector<ProfileInfoEntry>::const_iterator it = entries.begin();
+        it != entries.end(); ++it) {
+      if (it->name() == name) {
+        name_found = true;
+        break;
+      }
+    }
+    if (!name_found)
+      return name;
+  }
+}
+
+size_t ChooseAvatarIconIndexForNewProfile(
+    const std::vector<ProfileInfoEntry>& entries) {
+  size_t icon_index = 0;
+  // Try to find a unique, non-generic icon.
+  if (::ChooseAvatarIconIndexForNewProfile(entries, false, true, &icon_index))
+    return icon_index;
+  // Try to find any unique icon.
+  if (::ChooseAvatarIconIndexForNewProfile(entries, true, true, &icon_index))
+    return icon_index;
+  // Settle for any random icon, even if it's not unique.
+  if (::ChooseAvatarIconIndexForNewProfile(entries, true, false, &icon_index))
+    return icon_index;
+
+  NOTREACHED();
+  return 0;
+}
+
+} // namespace profile_icon_util