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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/api/clipboard/clipboard_api.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/lazy_instance.h"
#include "base/strings/string_util.h"
#include "base/values.h"
#include "extensions/browser/api/extensions_api_client.h"
#include "extensions/browser/event_router.h"
#include "ui/base/clipboard/clipboard_monitor.h"
namespace extensions {
namespace clipboard = api::clipboard;
static base::LazyInstance<
BrowserContextKeyedAPIFactory<ClipboardAPI>>::DestructorAtExit g_factory =
LAZY_INSTANCE_INITIALIZER;
// static
BrowserContextKeyedAPIFactory<ClipboardAPI>*
ClipboardAPI::GetFactoryInstance() {
return g_factory.Pointer();
}
ClipboardAPI::ClipboardAPI(content::BrowserContext* context)
: browser_context_(context) {
ui::ClipboardMonitor::GetInstance()->AddObserver(this);
}
ClipboardAPI::~ClipboardAPI() {
ui::ClipboardMonitor::GetInstance()->RemoveObserver(this);
}
void ClipboardAPI::OnClipboardDataChanged() {
EventRouter* router = EventRouter::Get(browser_context_);
if (router &&
router->HasEventListener(clipboard::OnClipboardDataChanged::kEventName)) {
std::unique_ptr<Event> event(new Event(
events::CLIPBOARD_ON_CLIPBOARD_DATA_CHANGED,
clipboard::OnClipboardDataChanged::kEventName, base::Value::List()));
router->BroadcastEvent(std::move(event));
}
}
ClipboardSetImageDataFunction::~ClipboardSetImageDataFunction() = default;
ExtensionFunction::ResponseAction ClipboardSetImageDataFunction::Run() {
std::optional<clipboard::SetImageData::Params> params =
clipboard::SetImageData::Params::Create(args());
EXTENSION_FUNCTION_VALIDATE(params);
// Fill in the omitted additional data items with empty data.
if (!params->additional_items)
params->additional_items.emplace();
if (!IsAdditionalItemsParamValid(*params->additional_items)) {
return RespondNow(Error("Unsupported additionalItems parameter data."));
}
ExtensionsAPIClient::Get()->SaveImageDataToClipboard(
std::move(params->image_data), params->type,
std::move(*params->additional_items),
base::BindOnce(&ClipboardSetImageDataFunction::OnSaveImageDataSuccess,
this),
base::BindOnce(&ClipboardSetImageDataFunction::OnSaveImageDataError,
this));
return RespondLater();
}
void ClipboardSetImageDataFunction::OnSaveImageDataSuccess() {
Respond(NoArguments());
}
void ClipboardSetImageDataFunction::OnSaveImageDataError(
const std::string& error) {
Respond(Error(error));
}
bool ClipboardSetImageDataFunction::IsAdditionalItemsParamValid(
const AdditionalDataItemList& items) {
// Limit the maximum text/html data length to 2MB.
const size_t max_item_data_bytes = 2097152;
bool has_text_plain = false;
bool has_text_html = false;
for (const clipboard::AdditionalDataItem& item : items) {
switch (item.type) {
case clipboard::DataItemType::kTextPlain:
if (has_text_plain)
return false;
has_text_plain = true;
break;
case clipboard::DataItemType::kTextHtml:
if (has_text_html)
return false;
has_text_html = true;
break;
default:
NOTREACHED();
}
// Check maximum length of the string data.
if (item.data.length() > max_item_data_bytes)
return false;
}
return true;
}
} // namespace extensions
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