About ( self )

Return a HTML-page giving information about the algorithm

ClearBreakpoints ( self )

Clear all breakpoints

GetBreakpointLines ( self )

Return lines on which user interaction (e.g., choosing a vertex occurrs.

GetInteractiveLines ( self )

Return lines on which user interaction (e.g., choosing a vertex occurrs.

GetSource ( self )

Return the algorithms source

NeededProperties ( self,  propertyValueDict )

Check that graph has that value for each property specified in the dictionary propertyValueDict

If check fails algorithm is stopped

Proper names for properties are defined in gProperty

Open ( self,  file )

Read in an algorithm from file.

OpenGraph ( self,  file )

Read in a graph from file and open the display

OpenSecondaryGraph (
        self,
        G,
        title,
        informer=None,
        )

Read in graph from file and open the the second display

PickEdge (
        self,
        default=None,
        filter=None,
        visual=None,
        )

Pick an edge interactively - default: specifies the edge returned when user does not want to select one. If default==None, a random edge not subject to filter will be returned

• filter: a function which should return a non-None value if the passed edge is acceptable

• visual is a function which takes the edge as its only argument and cause e.g. some visual feedback

PickVertex (
        self,
        default=None,
        filter=None,
        visual=None,
        )

Pick a vertex interactively.

• default: specifies the vertex returned when user does not want to select one. If default==None, a random vertex not subject to filter will be returned

• filter: a function which should return a non-None value if the passed vertex is acceptable

• visual is a function which takes the vertex as its only argument and cause e.g. some visual feedback

ReadPrologOptions ( self,  file )

Prolog files should contain the following variables: - breakpoints = [] a list of line numbers which are choosen as default breakpoints - interactive = [] a list of line numbers which contain interactive commands (e.g., PickVertex) - graphDisplays = 1 | 2 the number of graphDisplays needed by the algorithm - about = """<HTML-code>""" information about the algorithm

ReadyToStart ( self )

Return 1 if we are ready to run. That is when we user has opened both an algorithm and a graph.

SetBreakpoints ( self,  list )

SetBreakpoints is depreciated NOTE: Use breakpoint var in prolog instead.

Set all breakpoints in list: So an algorithm prolog can set a bunch of pre-assigned breakpoints at once

SetGUI ( self,  itsGUI )

Set the connection to its GUI

Start ( self )

Start an loaded algorithm. It firsts execs the prolog and then starts the algorithm in the debugger. The algorithms globals (i.e., the top-level locals are in a dict we supply and for which we preload the packages we want to make available)

ToggleBreakpoint ( self,  line=None )

If we have a breakpoint on line, delete it, else add it. If no line is passed we ask the DB for it