/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/map.py
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revision 249 by bh, Tue Jul 30 14:17:33 2002 UTC revision 319 by bh, Fri Sep 13 14:21:24 2002 UTC
# Line 32  class Map(TitledObject, Modifiable): Line 32  class Map(TitledObject, Modifiable):
32                          Parameter: the map                          Parameter: the map
33      """      """
34    
35      forwarded_channels = (LAYER_PROJECTION_CHANGED,      forwarded_channels = (CHANGED,
36                              LAYER_PROJECTION_CHANGED,
37                            LAYER_LEGEND_CHANGED,                            LAYER_LEGEND_CHANGED,
38                            LAYER_VISIBILITY_CHANGED)                            LAYER_VISIBILITY_CHANGED)
39    
40      def __init__(self, title, projection = None):      def __init__(self, title, projection = None):
41          """Initialize the map."""          """Initialize the map."""
42          TitledObject.__init__(self, title)          TitledObject.__init__(self, title)
43            Modifiable.__init__(self)
44          self.layers = []          self.layers = []
45          self.label_layer = LabelLayer("Labels")          self.label_layer = LabelLayer("Labels")
46          self.label_layer.Subscribe(CHANGED, self.forward, LAYERS_CHANGED)          self.label_layer.Subscribe(CHANGED, self.forward, LAYERS_CHANGED)
# Line 67  class Map(TitledObject, Modifiable): Line 69  class Map(TitledObject, Modifiable):
69          self.changed(LAYERS_CHANGED, self)          self.changed(LAYERS_CHANGED, self)
70          layer.Destroy()          layer.Destroy()
71    
72        def CanRemoveLayer(self, layer):
73            """Return true if the layer can be deleted.
74    
75            The default implementation always returns 1. Derived classes
76            should override this method if they have e.g. special layers
77            that the user should not be able to remove.
78            """
79            return 1
80    
81      def ClearLayers(self):      def ClearLayers(self):
82          """Delete all layers."""          """Delete all layers."""
83          for layer in self.layers:          for layer in self.layers:
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