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- // Copyright 2014 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 "remoting/host/chromeos/clipboard_aura.h"
- #include <utility>
- #include "base/memory/ptr_util.h"
- #include "base/strings/utf_string_conversions.h"
- #include "remoting/base/constants.h"
- #include "remoting/proto/event.pb.h"
- #include "remoting/protocol/clipboard_stub.h"
- #include "ui/base/clipboard/clipboard.h"
- #include "ui/base/clipboard/scoped_clipboard_writer.h"
- #include "ui/base/data_transfer_policy/data_transfer_endpoint.h"
- namespace {
- // Clipboard polling interval in milliseconds.
- const int64_t kClipboardPollingIntervalMs = 500;
- } // namespace
- namespace remoting {
- ClipboardAura::ClipboardAura()
- : polling_interval_(base::Milliseconds(kClipboardPollingIntervalMs)) {}
- ClipboardAura::~ClipboardAura() {
- DCHECK(thread_checker_.CalledOnValidThread());
- }
- void ClipboardAura::Start(
- std::unique_ptr<protocol::ClipboardStub> client_clipboard) {
- DCHECK(thread_checker_.CalledOnValidThread());
- client_clipboard_ = std::move(client_clipboard);
- // Aura doesn't provide a clipboard-changed notification. The only way to
- // detect clipboard changes is by polling.
- clipboard_polling_timer_.Start(FROM_HERE, polling_interval_, this,
- &ClipboardAura::CheckClipboardForChanges);
- }
- void ClipboardAura::InjectClipboardEvent(
- const protocol::ClipboardEvent& event) {
- DCHECK(thread_checker_.CalledOnValidThread());
- // Currently we only handle UTF-8 text.
- if (event.mime_type().compare(kMimeTypeTextUtf8) != 0) {
- return;
- }
- ui::ScopedClipboardWriter clipboard_writer(ui::ClipboardBuffer::kCopyPaste);
- clipboard_writer.WriteText(base::UTF8ToUTF16(event.data()));
- // Update local change-token to prevent this change from being picked up by
- // CheckClipboardForChanges.
- current_change_token_ = ui::ClipboardSequenceNumberToken();
- }
- void ClipboardAura::SetPollingIntervalForTesting(
- base::TimeDelta polling_interval) {
- DCHECK(thread_checker_.CalledOnValidThread());
- polling_interval_ = polling_interval;
- }
- void ClipboardAura::CheckClipboardForChanges() {
- DCHECK(thread_checker_.CalledOnValidThread());
- ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread();
- ui::ClipboardSequenceNumberToken change_token =
- clipboard->GetSequenceNumber(ui::ClipboardBuffer::kCopyPaste);
- if (change_token == current_change_token_) {
- return;
- }
- current_change_token_ = change_token;
- protocol::ClipboardEvent event;
- std::string data;
- ui::DataTransferEndpoint data_dst = ui::DataTransferEndpoint(
- ui::EndpointType::kDefault, /*notify_if_restricted=*/false);
- clipboard->ReadAsciiText(ui::ClipboardBuffer::kCopyPaste, &data_dst, &data);
- event.set_mime_type(kMimeTypeTextUtf8);
- event.set_data(data);
- client_clipboard_->InjectClipboardEvent(event);
- }
- std::unique_ptr<Clipboard> Clipboard::Create() {
- return base::WrapUnique(new ClipboardAura());
- }
- } // namespace remoting
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