mirror of
https://github.com/gnif/LookingGlass.git
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78 lines
3.1 KiB
C++
78 lines
3.1 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include "CClipboardChannel.h"
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#include "common/KVMFRClipboard.h"
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#include <stdint.h>
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class IClipboardTarget
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{
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public:
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virtual ~IClipboardTarget() = default;
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// Sends one client-to-Helper record. record.generation must be the binding
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// generation most recently supplied by ClipboardState; transports which
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// expose their own endpoint generation validate and replace it at this
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// adapter boundary. clipboardGeneration remains the clipboard content
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// generation and is preserved end-to-end.
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//
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// BUSY consumes neither the record nor its borrowed data; the source
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// retains and retries the exact record from its bounded worker/Process
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// drain.
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virtual ClipboardChannelResult SendClipboard(
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const KVMFRClipboardMessage& record, const uint8_t * data) = 0;
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// The source calls ClipboardReceiveReady after a Helper-to-client record
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// returned BUSY and it can accept an exact retry of that record.
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virtual void ClipboardReceiveReady() = 0;
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virtual void ClipboardFailed() = 0;
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};
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class IClipboardSource
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{
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public:
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virtual ~IClipboardSource() = default;
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// Start attaches the target, but the source must wait for the initial
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// ClipboardState callback before calling target.SendClipboard. Stop is a
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// callback-quiescence barrier and leaves no work which can access target;
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// it also cleans up a partially completed or failed Start.
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virtual bool Start(IClipboardTarget& target) = 0;
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virtual void Stop() = 0;
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// All callbacks into the source, including Start and Stop, are serialized.
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// record.generation is stamped with the current binding generation. A
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// generation change invalidates records from an earlier generation and
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// cancels their transfers; clipboardGeneration is unaffected. data is
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// borrowed only for the duration of SendClipboard. BUSY consumes neither
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// record nor data, and the channel retries the same record after
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// ClipboardReceiveReady (or its bounded polling fallback).
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virtual void ClipboardState(bool available, uint32_t generation) = 0;
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virtual ClipboardChannelResult SendClipboard(
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const KVMFRClipboardMessage& record, const uint8_t * data) = 0;
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// Reset advances generation before the callback. The source cancels all
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// transfers from the preceding generation.
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virtual void ClipboardReset(uint32_t generation, uint32_t reason) = 0;
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};
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