mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-13 18:27:35 +00:00
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_AsyncGtkClipboardRequest_h
|
|
#define mozilla_AsyncGtkClipboardRequest_h
|
|
|
|
#include "nsClipboard.h"
|
|
|
|
namespace mozilla {
|
|
|
|
// An asynchronous clipboard request that we wait for synchronously by
|
|
// spinning the event loop.
|
|
class MOZ_STACK_CLASS AsyncGtkClipboardRequest {
|
|
// Heap-allocated object that we give GTK as a callback.
|
|
struct Request {
|
|
explicit Request(ClipboardDataType aDataType) : mDataType(aDataType) {}
|
|
|
|
void Complete(const void*);
|
|
|
|
const ClipboardDataType mDataType;
|
|
Maybe<ClipboardData> mData;
|
|
bool mTimedOut = false;
|
|
};
|
|
|
|
UniquePtr<Request> mRequest;
|
|
|
|
static void OnDataReceived(GtkClipboard*, GtkSelectionData*, gpointer);
|
|
static void OnTextReceived(GtkClipboard*, const gchar*, gpointer);
|
|
|
|
public:
|
|
// Launch a request for a particular GTK clipboard. The current status of the
|
|
// request can be observed by calling HasCompleted() and TakeResult().
|
|
AsyncGtkClipboardRequest(ClipboardDataType, int32_t aWhichClipboard,
|
|
const char* aMimeType = nullptr);
|
|
|
|
// Returns whether the request has been answered already.
|
|
bool HasCompleted() const { return mRequest->mData.isSome(); }
|
|
|
|
// Takes the result from the current request if completed, or a
|
|
// default-constructed data otherwise. The destructor will take care of
|
|
// flagging the request as timed out in that case.
|
|
ClipboardData TakeResult() {
|
|
if (!HasCompleted()) {
|
|
return {};
|
|
}
|
|
auto request = std::move(mRequest);
|
|
return request->mData.extract();
|
|
}
|
|
|
|
// If completed, frees the request if needed. Otherwise, marks it as a timed
|
|
// out request so that when it completes the Request object is properly
|
|
// freed.
|
|
~AsyncGtkClipboardRequest();
|
|
};
|
|
|
|
}; // namespace mozilla
|
|
|
|
#endif
|