callbacks

virtual methods of initialization, modification, and finalization of graph objects More...

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Data Structures
struct	Agcbdisc_s
	client event callbacks, used in Agcbstack_s More...
struct	Agcbstack_s
	object event callbacks More...

Typedefs
typedef struct Agcbdisc_s	Agcbdisc_t
	client event callbacks
typedef struct Agcbstack_s	Agcbstack_t
	enclosing state for Agcbdisc_t

Functions
void	agmethod_init (Agraph_t *g, void *obj)
void	agmethod_upd (Agraph_t *g, void *obj, Agsym_t *sym)
void	agmethod_delete (Agraph_t *g, void *obj)
void	aginitcb (Agraph_t *g, void *obj, Agcbstack_t *disc)
void	agupdcb (Agraph_t *g, void *obj, Agsym_t *sym, Agcbstack_t *disc)
void	agdelcb (Agraph_t *g, void *obj, Agcbstack_t *disc)
void	agpushdisc (Agraph_t *g, Agcbdisc_t *disc, void *state)
int	agpopdisc (Agraph_t *g, Agcbdisc_t *disc)

Detailed Description

An Agcbdisc_t defines callbacks to be invoked by Libcgraph when initializing, modifying, or finalizing graph objects. Disciplines are kept on a stack. Libcgraph automatically calls the methods on the stack, top-down. Callbacks are installed with agpushdisc, uninstalled with agpopdisc.

Typedef Documentation

Agcbdisc_t

typedef struct Agcbdisc_s Agcbdisc_t

Definition at line 102 of file cgraph.h.

Agcbstack_t

typedef struct Agcbstack_s Agcbstack_t

Definition at line 103 of file cgraph.h.

Function Documentation

agdelcb()

void agdelcb	(	Agraph_t *	g,
		void *	obj,
		Agcbstack_t *	disc
	)

Definition at line 143 of file obj.c.

References agdelcb(), AGEDGE, AGNODE, AGRAPH, AGTYPE, Agcbdisc_s::del, Agcbdisc_s::edge, Agcbstack_s::f, Agcbdisc_s::graph, Agcbdisc_s::node, NULL, Agcbstack_s::prev, and Agcbstack_s::state.

Referenced by agdelcb(), and agmethod_delete().

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aginitcb()

void aginitcb	(	Agraph_t *	g,
		void *	obj,
		Agcbstack_t *	disc
	)

Definition at line 83 of file obj.c.

References AGEDGE, aginitcb(), AGNODE, AGRAPH, AGTYPE, Agcbdisc_s::edge, Agcbstack_s::f, Agcbdisc_s::graph, Agcbdisc_s::ins, Agcbdisc_s::node, NULL, Agcbstack_s::prev, and Agcbstack_s::state.

Referenced by aginitcb(), and agmethod_init().

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agmethod_delete()

void agmethod_delete	(	Agraph_t *	g,
		void *	obj
	)

Definition at line 138 of file obj.c.

References agdelcb(), Agclos_s::cb, and Agraph_s::clos.

Referenced by agclose(), agdeledge(), and agdelnode().

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agmethod_init()

void agmethod_init	(	Agraph_t *	g,
		void *	obj
	)

Definition at line 78 of file obj.c.

References aginitcb(), Agclos_s::cb, and Agraph_s::clos.

Referenced by agopen1(), initnode(), and newedge().

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agmethod_upd()

void agmethod_upd	(	Agraph_t *	g,
		void *	obj,
		Agsym_t *	sym
	)

Definition at line 108 of file obj.c.

References agupdcb(), Agclos_s::cb, and Agraph_s::clos.

Referenced by agxset(), and setattr().

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agpopdisc()

int agpopdisc	(	Agraph_t *	g,
		Agcbdisc_t *	disc
	)

Definition at line 211 of file obj.c.

References Agclos_s::cb, Agraph_s::clos, Agcbstack_s::f, FAILURE, free(), Agcbstack_s::prev, and SUCCESS.

Referenced by agclose().

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agpushdisc()

void agpushdisc	(	Agraph_t *	g,
		Agcbdisc_t *	disc,
		void *	state
	)

Definition at line 202 of file obj.c.

References Agclos_s::cb, Agraph_s::clos, Agcbstack_s::f, gv_alloc(), Agcbstack_s::prev, and Agcbstack_s::state.

Referenced by dot2_rank().

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agupdcb()

void agupdcb	(	Agraph_t *	g,
		void *	obj,
		Agsym_t *	sym,
		Agcbstack_t *	disc
	)

Definition at line 113 of file obj.c.

References AGEDGE, AGNODE, AGRAPH, AGTYPE, agupdcb(), Agcbdisc_s::edge, Agcbstack_s::f, Agcbdisc_s::graph, Agcbdisc_s::mod, Agcbdisc_s::node, NULL, Agcbstack_s::prev, and Agcbstack_s::state.

Referenced by agmethod_upd(), and agupdcb().

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