55 lines
1.1 KiB
C++
Executable File
55 lines
1.1 KiB
C++
Executable File
#ifndef __SPIES_H
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#define __SPIES_H
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#ifndef __ARRAY_H
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#include <array.h>
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#endif
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enum TSpy_message { spy_delete, spy_change };
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class TSpy_target : public TObject
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{
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friend class TSpy;
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TPointer_array _spies;
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protected:
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bool add_spy(TSpy* spy);
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bool kill_spy(const TSpy* spy);
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void notify(TSpy_message msg, void* hint);
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public:
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void notify_change(void* hint = NULL) { notify(spy_change, hint); }
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TSpy_target() { }
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virtual ~TSpy_target();
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};
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typedef void (*SPY_NOTIFY)(TSpy& spy, TSpy_message msg, void* pJolly);
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class TSpy : public TObject
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{
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friend class TSpy_target;
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TSpy_target* _target;
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SPY_NOTIFY _notify;
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bool _dirty;
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protected:
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virtual void notify(TSpy_message msg, void* pJolly);
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public:
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TSpy_target* target_ptr() const { return _target; }
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TSpy_target& target() const { CHECK(_target, "NULL spy target"); return *_target; }
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void spy(TSpy_target* t);
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void set_notify(SPY_NOTIFY sn) { _notify = sn; }
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bool dirty() { bool d = _dirty; _dirty = FALSE; return d; }
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TSpy() : _target(NULL), _notify(NULL), _dirty(FALSE) { }
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TSpy(TSpy_target* t) : _target(NULL), _notify(NULL) { spy(t); }
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virtual ~TSpy();
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};
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#endif
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