/[gzz]/gzz/doc/pegboard/buoydesign--tjl/peg.rst
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revision 1.10 by tjl, Mon Feb 3 06:57:48 2003 UTC revision 1.11 by tjl, Tue Feb 4 06:15:15 2003 UTC
# Line 217  a hint. Line 217  a hint.
217    
218  Matcher structure can separate left&right links and know which way  Matcher structure can separate left&right links and know which way
219    
220    Now, to make things clear, the call sequence for RealBuoyViewManager
221    is
222    
223    .. UML:: BuoyManagerCall
224    
225        sequence CallBuoyManager
226            call RealBuoyViewManager "render"
227                call BuoyViewMainNodeA "renderMain"
228                    call RealBuoyViewManager "link(NodeTypeB)"
229                        call BuoyViewNodeTypeB "renderBuoy"
230            call RealBuoyViewManager "mouse"
231                call BuoyViewNodeTypeB "createMainNode"
232                    create BuoyViewMainNodeB
233            call RealBuoyViewManager "render"
234                call BuoyViewMainNodeB "renderMain"
235                    call RealBuoyViewManager "link(NodeTypeA)"
236                        call BuoyViewNodeTypeA "renderBuoy"
237    
238        seqobject RealBuoyViewManager
239        seqobject BuoyViewNodeTypeA
240        seqobject BuoyViewNodeTypeB
241        seqobject BuoyViewMainNodeA
242        seqobject BuoyViewMainNodeB
243    
244    
245        ---
246        RealBuoyViewManager.c = (0,0);
247        horizontally(100, foo, RealBuoyViewManager, BuoyViewNodeTypeA,
248                    BuoyViewMainNodeA, BuoyViewNodeTypeB,
249                        BuoyViewMainNodeB.ghost);
250    
251    In the diagram, we first see RealBuoyViewManager render the view, calling
252    BuoyViewMainNodeA to render the main node and getting a callback
253    through the BuoyLinkListener interface about a link. This causes it to call
254    BuoyViewNodeTypeB to render the buoy.
255    
256    Then, the mouse click comes which takes the focus to the buoy of type B.
257    Its node type object is called to create the new focus object. Then, the
258    render pattern is repeated, but now with BuoyViewMainNodeB in the focus.
259    
260  The semi-pluggable implementation  The semi-pluggable implementation
261  ---------------------------------  ---------------------------------

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