Add "kiosk_only" manifest attribute for platform apps.

chrome/common/extensions/manifest_handlers/kiosk_mode_info.cc

+// Copyright (c) 2013 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/common/extensions/manifest_handlers/kiosk_mode_info.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "base/strings/string16.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/values.h"
+#include "extensions/common/manifest_constants.h"
+
+namespace extensions {
+
+namespace keys = manifest_keys;
+
+KioskModeInfo::KioskModeInfo(KioskStatus kiosk_status)
+    : kiosk_status(kiosk_status) {
+}
+
+KioskModeInfo::~KioskModeInfo() {
+}
+
+// static
+bool KioskModeInfo::IsKioskEnabled(const Extension* extension) {
+  KioskModeInfo* info = static_cast<KioskModeInfo*>(
+      extension->GetManifestData(keys::kKioskMode));
+  return info ? info->kiosk_status != NONE : false;
+}
+
+// static
+bool KioskModeInfo::IsKioskOnly(const Extension* extension) {
+  KioskModeInfo* info = static_cast<KioskModeInfo*>(
+      extension->GetManifestData(keys::kKioskMode));
+  return info ? info->kiosk_status == ONLY : false;
+}
+
+KioskModeHandler::KioskModeHandler() {
+  supported_keys_.push_back(keys::kKioskEnabled);
+  supported_keys_.push_back(keys::kKioskOnly);
+}
+
+KioskModeHandler::~KioskModeHandler() {
+}
+
+bool KioskModeHandler::Parse(Extension* extension, string16* error) {
+  const Manifest* manifest = extension->manifest();
+  DCHECK(manifest->HasKey(keys::kKioskEnabled) ||
+         manifest->HasKey(keys::kKioskOnly));
+
+  bool kiosk_enabled = false;
+  if (manifest->HasKey(keys::kKioskEnabled) &&
+      !manifest->GetBoolean(keys::kKioskEnabled, &kiosk_enabled)) {
+    *error = ASCIIToUTF16(manifest_errors::kInvalidKioskEnabled);
+    return false;
+  }
+
+  bool kiosk_only = false;
+  if (manifest->HasKey(keys::kKioskOnly) &&
+      !manifest->GetBoolean(keys::kKioskOnly, &kiosk_only)) {
+    *error = ASCIIToUTF16(manifest_errors::kInvalidKioskOnly);
+    return false;
+  }
+
+  if (kiosk_only && !kiosk_enabled) {
+    *error = ASCIIToUTF16(manifest_errors::kInvalidKioskOnlyButNotEnabled);

[not at google - send to devlin, 2013/09/24 21:57:39]

could you add some quick unit tests for this class, in particular for this error
case?

[Tim Song, 2013/09/24 22:38:25]

Done. I added a few tests to extension_manifests_kiosk_unittest.cc, including
this test case.

+    return false;
+  }
+
+  // All other use cases should be already filtered out by manifest feature
+  // checks.
+  DCHECK(extension->is_platform_app());

[not at google - send to devlin, 2013/09/24 21:57:39]

IMO these checks aren't that useful but it's fine to leave it in.

+
+  KioskModeInfo::KioskStatus kiosk_status = KioskModeInfo::NONE;
+  if (kiosk_enabled)
+    kiosk_status = kiosk_only ? KioskModeInfo::ONLY : KioskModeInfo::ENABLED;
+
+  extension->SetManifestData(keys::kKioskMode,
+      new KioskModeInfo(kiosk_status));
+
+  return true;
+}
+
+const std::vector<std::string> KioskModeHandler::Keys() const {
+  return supported_keys_;
+}
+
+}  // namespace extensions