Move Commands from Extension to CommandsHandler

chrome/common/extensions/api/commands/commands_handler.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/api/commands/commands_handler.h"
+
+#include "base/string_number_conversions.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/common/extensions/extension_manifest_constants.h"
+#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/error_utils.h"
+
+namespace extensions {
+
+namespace {
+// The maximum number of commands (including page action/browser actions) an
+// extension can have.
+const size_t kMaxCommandsPerExtension = 4;
+}  // namespace
+
+CommandsInfo::CommandsInfo() {
+}
+
+CommandsInfo::~CommandsInfo() {
+}
+
+// static
+const Command* CommandsInfo::GetBrowserActionCommand(
+   const Extension* extension) {
+  CommandsInfo* info = static_cast<CommandsInfo*>(
+      extension->GetManifestData(extension_manifest_keys::kCommands));
+  return info ? info->browser_action_command.get() : NULL;
+}
+
+// static
+const Command* CommandsInfo::GetPageActionCommand(const Extension* extension) {
+  CommandsInfo* info = static_cast<CommandsInfo*>(
+      extension->GetManifestData(extension_manifest_keys::kCommands));
+  return info ? info->page_action_command.get() : NULL;
+}
+
+// static
+const Command* CommandsInfo::GetScriptBadgeCommand(const Extension* extension) {
+  CommandsInfo* info = static_cast<CommandsInfo*>(
+      extension->GetManifestData(extension_manifest_keys::kCommands));
+  return info ? info->script_badge_command.get() : NULL;
+}
+
+// static
+const CommandMap* CommandsInfo::GetNamedCommands(const Extension* extension) {
+  CommandsInfo* info = static_cast<CommandsInfo*>(
+      extension->GetManifestData(extension_manifest_keys::kCommands));
+  return info ? &info->named_commands : NULL;
+}
+
+CommandsHandler::CommandsHandler() {
+}
+
+CommandsHandler::~CommandsHandler() {
+}
+
+bool CommandsHandler::Parse(const base::Value* value,
+                            Extension* extension,
+                            string16* error) {
+  const base::DictionaryValue* dict = NULL;
+  if (!value->GetAsDictionary(&dict)) {
+    *error = ASCIIToUTF16(extension_manifest_errors::kInvalidCommandsKey);
+    return false;
+  }
+
+  if (dict->size() > kMaxCommandsPerExtension) {
+    *error = ErrorUtils::FormatErrorMessageUTF16(
+        extension_manifest_errors::kInvalidKeyBindingTooMany,
+        base::IntToString(kMaxCommandsPerExtension));
+    return false;
+  }
+
+  scoped_ptr<CommandsInfo> commands_info(new CommandsInfo);
+
+  int command_index = 0;
+  for (DictionaryValue::key_iterator iter = dict->begin_keys();
+       iter != dict->end_keys(); ++iter) {
+    ++command_index;
+
+    const DictionaryValue* command = NULL;
+    if (!dict->GetDictionary(*iter, &command)) {
+      *error = ErrorUtils::FormatErrorMessageUTF16(
+          extension_manifest_errors::kInvalidKeyBindingDictionary,
+          base::IntToString(command_index));
+      return false;
+    }
+
+    scoped_ptr<extensions::Command> binding(new Command());
+    if (!binding->Parse(command, *iter, command_index, error))
+      return false;  // |error| already set.
+
+    std::string command_name = binding->command_name();
+    if (command_name == extension_manifest_values::kBrowserActionCommandEvent) {
+      commands_info->browser_action_command.reset(binding.release());
+    } else if (command_name ==
+                   extension_manifest_values::kPageActionCommandEvent) {
+      commands_info->page_action_command.reset(binding.release());
+    } else if (command_name ==
+                   extension_manifest_values::kScriptBadgeCommandEvent) {
+      commands_info->script_badge_command.reset(binding.release());
+    } else {
+      if (command_name[0] != '_')  // All commands w/underscore are reserved.
+        commands_info->named_commands[command_name] = *binding.get();
+    }
+  }
+
+  MaybeSetBrowserActionDefault(extension, commands_info.get());
+
+  extension->SetManifestData(extension_manifest_keys::kCommands,
+                             commands_info.release());
+  return true;
+}
+
+bool CommandsHandler::HasNoKey(Extension* extension,
+                               string16* error) {
+  scoped_ptr<CommandsInfo> commands_info(new CommandsInfo);
+  MaybeSetBrowserActionDefault(extension, commands_info.get());
+  extension->SetManifestData(extension_manifest_keys::kCommands,
+                             commands_info.release());
+  return true;
+}
+
+void CommandsHandler::MaybeSetBrowserActionDefault(const Extension* extension,
+                                                   CommandsInfo* info) {
+  if (extension->manifest()->HasKey(extension_manifest_keys::kBrowserAction) &&
+      !info->browser_action_command.get()) {
+    info->browser_action_command.reset(new Command(
+        extension_manifest_values::kBrowserActionCommandEvent, string16(), ""));
+  }
+}
+
+}  // namespace extensions