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// Copyright 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/ui_overrides_handler.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "extensions/common/error_utils.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/feature_switch.h"
#include "extensions/common/manifest_constants.h"
#include "extensions/common/permissions/manifest_permission.h"
#include "extensions/common/permissions/permissions_data.h"
#include "extensions/common/permissions/permissions_info.h"
#include "grit/generated_resources.h"
#include "ipc/ipc_message.h"
#include "ui/base/l10n/l10n_util.h"
using extensions::api::manifest_types::ChromeUIOverrides;
namespace extensions {
// The manifest permission implementation supports a permission for overriding
// the bookmark UI.
class UIOverridesHandler::ManifestPermissionImpl : public ManifestPermission {
public:
explicit ManifestPermissionImpl(bool override_bookmarks_ui_permission)
: override_bookmarks_ui_permission_(override_bookmarks_ui_permission) {}
// extensions::ManifestPermission overrides.
virtual std::string name() const OVERRIDE {
return manifest_keys::kUIOverride;
}
virtual std::string id() const OVERRIDE {
return name();
}
virtual bool HasMessages() const OVERRIDE {
return override_bookmarks_ui_permission_;
}
virtual PermissionMessages GetMessages() const OVERRIDE {
PermissionMessages result;
if (override_bookmarks_ui_permission_) {
result.push_back(PermissionMessage(
PermissionMessage::kOverrideBookmarksUI,
l10n_util::GetStringUTF16(
IDS_EXTENSION_PROMPT_WARNING_OVERRIDE_BOOKMARKS_UI)));
}
return result;
}
virtual bool FromValue(const base::Value* value) OVERRIDE {
return value && value->GetAsBoolean(&override_bookmarks_ui_permission_);
}
virtual scoped_ptr<base::Value> ToValue() const OVERRIDE {
return scoped_ptr<base::Value>(
new base::FundamentalValue(override_bookmarks_ui_permission_)).Pass();
}
virtual ManifestPermission* Clone() const OVERRIDE {
return scoped_ptr<ManifestPermissionImpl>(
new ManifestPermissionImpl(
override_bookmarks_ui_permission_)).release();
}
virtual ManifestPermission* Diff(const ManifestPermission* rhs) const
OVERRIDE {
const ManifestPermissionImpl* other =
static_cast<const ManifestPermissionImpl*>(rhs);
return scoped_ptr<ManifestPermissionImpl>(new ManifestPermissionImpl(
override_bookmarks_ui_permission_ &&
!other->override_bookmarks_ui_permission_)).release();
}
virtual ManifestPermission* Union(const ManifestPermission* rhs) const
OVERRIDE {
const ManifestPermissionImpl* other =
static_cast<const ManifestPermissionImpl*>(rhs);
return scoped_ptr<ManifestPermissionImpl>(new ManifestPermissionImpl(
override_bookmarks_ui_permission_ ||
other->override_bookmarks_ui_permission_)).release();
}
virtual ManifestPermission* Intersect(const ManifestPermission* rhs) const
OVERRIDE {
const ManifestPermissionImpl* other =
static_cast<const ManifestPermissionImpl*>(rhs);
return scoped_ptr<ManifestPermissionImpl>(new ManifestPermissionImpl(
override_bookmarks_ui_permission_ &&
other->override_bookmarks_ui_permission_)).release();
}
virtual bool Contains(const ManifestPermission* rhs) const OVERRIDE {
const ManifestPermissionImpl* other =
static_cast<const ManifestPermissionImpl*>(rhs);
return !other->override_bookmarks_ui_permission_ ||
override_bookmarks_ui_permission_;
}
virtual bool Equal(const ManifestPermission* rhs) const OVERRIDE {
const ManifestPermissionImpl* other =
static_cast<const ManifestPermissionImpl*>(rhs);
return override_bookmarks_ui_permission_ ==
other->override_bookmarks_ui_permission_;
}
virtual void Write(IPC::Message* m) const OVERRIDE {
IPC::WriteParam(m, override_bookmarks_ui_permission_);
}
virtual bool Read(const IPC::Message* m, PickleIterator* iter) OVERRIDE {
return IPC::ReadParam(m, iter, &override_bookmarks_ui_permission_);
}
virtual void Log(std::string* log) const OVERRIDE {
IPC::LogParam(override_bookmarks_ui_permission_, log);
}
private:
bool override_bookmarks_ui_permission_;
};
UIOverrides::UIOverrides() {}
UIOverrides::~UIOverrides() {}
const UIOverrides* UIOverrides::Get(const Extension* extension) {
return static_cast<UIOverrides*>(
extension->GetManifestData(manifest_keys::kUIOverride));
}
bool UIOverrides::RemovesBookmarkButton(const UIOverrides& ui_overrides) {
return ui_overrides.bookmarks_ui &&
ui_overrides.bookmarks_ui->remove_button &&
*ui_overrides.bookmarks_ui->remove_button;
}
bool UIOverrides::RemovesBookmarkShortcut(const UIOverrides& ui_overrides) {
return ui_overrides.bookmarks_ui &&
ui_overrides.bookmarks_ui->remove_bookmark_shortcut &&
*ui_overrides.bookmarks_ui->remove_bookmark_shortcut;
}
UIOverridesHandler::UIOverridesHandler() {}
UIOverridesHandler::~UIOverridesHandler() {}
bool UIOverridesHandler::Parse(Extension* extension, base::string16* error) {
const base::Value* dict = NULL;
CHECK(extension->manifest()->Get(manifest_keys::kUIOverride, &dict));
scoped_ptr<ChromeUIOverrides> overrides(
ChromeUIOverrides::FromValue(*dict, error));
if (!overrides)
return false;
scoped_ptr<UIOverrides> info(new UIOverrides);
info->bookmarks_ui.swap(overrides->bookmarks_ui);
if (!info->bookmarks_ui) {
*error = ErrorUtils::FormatErrorMessageUTF16(
manifest_errors::kInvalidEmptyDictionary,
manifest_keys::kUIOverride);
return false;
}
info->manifest_permission.reset(new ManifestPermissionImpl(
UIOverrides::RemovesBookmarkButton(*info)));
extension->SetManifestData(manifest_keys::kUIOverride, info.release());
return true;
}
bool UIOverridesHandler::Validate(const Extension* extension,
std::string* error,
std::vector<InstallWarning>* warnings) const {
const UIOverrides* ui_overrides = UIOverrides::Get(extension);
if (ui_overrides && ui_overrides->bookmarks_ui) {
if (!FeatureSwitch::enable_override_bookmarks_ui()->IsEnabled()) {
warnings->push_back(InstallWarning(
ErrorUtils::FormatErrorMessage(
manifest_errors::kUnrecognizedManifestKey,
manifest_keys::kBookmarkUI)));
}
}
return true;
}
ManifestPermission* UIOverridesHandler::CreatePermission() {
return new ManifestPermissionImpl(false);
}
ManifestPermission* UIOverridesHandler::CreateInitialRequiredPermission(
const Extension* extension) {
const UIOverrides* data = UIOverrides::Get(extension);
if (data)
return data->manifest_permission->Clone();
return NULL;
}
const std::vector<std::string> UIOverridesHandler::Keys() const {
return SingleKey(manifest_keys::kUIOverride);
}
} // namespace extensions
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