teamwork.widgets.fsa.GraphWidget

Class GraphWidget

Connect nodes and GraphEdgeWidgets into a graph.

Instance Methods

__init__(self, canvas, nodes, edges, **attrs)
Create a new canvas widget.

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list of int

_tags(self)
Returns: a list of canvas tags for all graphical elements managed by this canvas widget, not including graphical elements managed by its child widgets.

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None

_update(self, child)
Make sure all edges/nodes are connected correctly.

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None

_manage(self)
Arrange the child widgets of this canvas widget.

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arrange(self, arrange_algorithm=None)
Set the node positions.

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_arrange_levels(self)
Re-arrange each level to (locally) minimize the number of crossing edges.

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_arrange_level(self, levelnum)
Arrange a given level..

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_arrange_into_levels(self)
Assign a level to each node.

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_reachable(self, node, reached=None)
How many *unexpanded* nodes can be reached from the given node?

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_add_descendants(self, parent_level, levelnum)
Add all the descendants of the nodes in the list parent_level to the structures self._level and self._nodelevel.

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_add_descendants_dfs(self, parent_level, levelnum)

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_add_descendants_bfs(self, parent_level, levelnum)

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_add_descendants_bfs2(self, parent_level, levelnum)

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Inherited from bigwidgets.CanvasWidget: __getitem__, __repr__, __setitem__, bbox, bind_click, bind_drag, canvas, child_widgets, destroy, height, hidden, hide, manage, move, parent, show, tags, unbind_click, unbind_drag, update, width

Inherited from bigwidgets.CanvasWidget (private): _add_child_widget, _remove_child_widget

init(self, canvas, nodes, edges, **attrs)
(Constructor)

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Create a new canvas widget. This constructor should only be called by subclass constructors; and it should be called only after the subclass has constructed all graphical canvas objects and registered all child widgets.

Parameters:

canvas - This canvas widget's canvas.
parent - This canvas widget's hierarchical parent.
attribs - The new canvas widget's attributes.
edges (dictionary from (node, node) to label.)

Overrides: bigwidgets.CanvasWidget.__init__

_tags(self)

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Returns: list of int: a list of canvas tags for all graphical elements managed by this canvas widget, not including graphical elements managed by its child widgets.
Overrides: bigwidgets.CanvasWidget._tags: (inherited documentation)

_update(self, child)

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Make sure all edges/nodes are connected correctly.

Parameters:

child - The child that changed.

Returns: None

Overrides: bigwidgets.CanvasWidget._update

_manage(self)

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Arrange the child widgets of this canvas widget. This method is called when the canvas widget is initially created. It is also called if the user calls the manage method on this canvas widget or any of its ancestors.

Returns: None
Overrides: bigwidgets.CanvasWidget._manage: (inherited documentation)

arrange(self, arrange_algorithm=None)

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Set the node positions. This routine should attempt to minimize the number of crossing edges, in order to make the graph easier to read.

_arrange_level(self, levelnum)

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Arrange a given level.. This algorithm is simple and pretty heuristic..

Class GraphWidget

__init__(self, canvas, nodes, edges, **attrs) (Constructor)

_tags(self)

_update(self, child)

_manage(self)

arrange(self, arrange_algorithm=None)

_arrange_level(self, levelnum)

init(self, canvas, nodes, edges, **attrs)
(Constructor)