/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* vim:expandtab:shiftwidth=4:tabstop=4:

 */

/* 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 __nsClipboardX11_h_

#define __nsClipboardX11_h_

#include "nsIClipboard.h"

#include <gtk/gtk.h>

enum ClipboardDataType {

    CLIPBOARD_DATA,

    CLIPBOARD_TEXT,

    CLIPBOARD_TARGETS

};

class nsRetrievalContextX11 : public nsRetrievalContext

{

public:

    enum State { INITIAL, COMPLETED, TIMED_OUT };

    virtual const char* GetClipboardData(const char* aMimeType,

                                         int32_t aWhichClipboard,

                                         uint32_t* aContentLength) override;

    virtual const char* GetClipboardText(int32_t aWhichClipboard) override;

    virtual void ReleaseClipboardData(const char* aClipboardData) override;

    virtual GdkAtom* GetTargets(int32_t aWhichClipboard,

                                int* aTargetNums) override;

    virtual bool HasSelectionSupport(void) override;

    // Call this when data or text has been retrieved.

    void Complete(ClipboardDataType aDataType,

                  const void* aData,

                  int aDataRequestNumber);

    nsRetrievalContextX11();

    virtual ~nsRetrievalContextX11() override;

private:

    bool WaitForClipboardData(ClipboardDataType aDataType,

                              GtkClipboard *clipboard,

                              const char *aMimeType = nullptr);

    /**

     * Spins X event loop until timing out or being completed. Returns

     * null if we time out, otherwise returns the completed data (passing

     * ownership to caller).

     */

    bool WaitForX11Content();

    State     mState;

    int       mClipboardRequestNumber;

    void*     mClipboardData;

    uint32_t  mClipboardDataLength;

    GdkAtom   mTargetMIMEType;

};

class ClipboardRequestHandler

{

public:

    ClipboardRequestHandler(nsRetrievalContextX11 *aContext,

                            ClipboardDataType aDataType,

                            int aDataRequestNumber)

      : mContext(aContext)

      , mDataRequestNumber(aDataRequestNumber)

      , mDataType(aDataType)

      {}

    void Complete(const void *aData)

    {

      mContext->Complete(mDataType, aData, mDataRequestNumber);

    }

private:

    nsRetrievalContextX11 *mContext;

    int                    mDataRequestNumber;

    ClipboardDataType      mDataType;

};

#endif /* __nsClipboardX11_h_ */