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ca456a7241
These callbacks can call object's methods, not some global C functions. DropboxStorage::info2() and DropboxStorage::infoMethodCallback() demonstrate the idea.
65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef BACKENDS_NETWORKING_CURL_REQUEST_H
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#define BACKENDS_NETWORKING_CURL_REQUEST_H
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namespace Networking {
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class Request {
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protected:
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typedef void(*SimpleCallback)(Request* request, void *result);
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/**
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* Callback, which should be called before Request returns true in handle().
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* That's the way Requests pass the result to the code which asked to create this request.
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*/
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SimpleCallback _callback;
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/**
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* Pointer, which could be set by Request creating code. It might be accessed
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* from this Request when callback is called, for example.
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*/
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void *_pointer;
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public:
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Request(SimpleCallback cb): _callback(cb) {};
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virtual ~Request() {};
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/**
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* Method, which does actual work. Depends on what this Request is doing.
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*
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* @return true if request's work is complete and it may be removed from Storage's list
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*/
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virtual bool handle() = 0;
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void setPointer(void *ptr) { _pointer = ptr; }
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void *pointer() const { return _pointer; }
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};
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} //end of namespace Cloud
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#endif
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