barrier/synergy/IClipboard.h

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#ifndef ICLIPBOARD_H
#define ICLIPBOARD_H
#include "IInterface.h"
#include "CString.h"
#include "BasicTypes.h"
class IClipboard : public IInterface {
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public:
// timestamp type. timestamps are in milliseconds from some
// arbitrary starting time. timestamps will wrap around to 0
// after about 49 3/4 days.
typedef UInt32 Time;
// known clipboard formats. kNumFormats must be last and
// formats must be sequential starting from zero. clipboard
// data set via add() and retrieved via get() is in one of
// these formats. platform dependent clipboard subclasses
// can and should present any suitable formats derivable
// from these formats (e.g. UCS-16 encoded unicode).
//
// kText: UTF-8 encoded unicode (ISO-10646), newline is LF
enum EFormat { kText, kNumFormats };
// manipulators
// take ownership of the clipboard and clear all data from it.
// must be called between an open() and close(). if returns
// false then the clipboard ownership could not be taken; the
// clipboard should not be emptied in this case.
virtual bool empty() = 0;
// add data in the given format to the clipboard. data is
// passed as a string but the contents are generally not
// interpreted. may only be called after a successful empty().
virtual void add(EFormat, const CString& data) = 0;
// accessors
// open the clipboard. return true iff the clipboard could
// be opened. if open() returns true then it must be followed
// by a close() at some later time; if it returns false then
// close() must not be called.
virtual bool open(Time) const = 0;
// close the clipboard. close() must match a preceding open().
// this signals that the clipboard has been filled with all the
// necessary data. it does not mean the clipboard ownership
// should be released.
virtual void close() const = 0;
// returns the timestamp passed to the last successful open().
virtual Time getTime() const = 0;
// returns true iff the clipboard contains data in the given
// format. must be called between an open() and close().
virtual bool has(EFormat) const = 0;
// returns data in the given format. rturns the empty string
// if there is no data in that format. must be called between
// an open() and close().
virtual CString get(EFormat) const = 0;
};
#endif