Matlab listeners multiple execution
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I have an issue using Matlab listeners: PreGet and PostGet. My purpose is to be able to execute a set of functions when I am writing and when I am writing a calls property (before and after each read/write operation). This is an example of my class:
classdef myClass < handle
properties (GetObservable,SetObservable,GetAccess = public, SetAccess = public )
myProp = '';
end
methods
function myClass = myClass(Input)
myClass.myProp = Input;
addlistener(myClass , 'myProp' , 'PreGet' , @myClass.PreReadClass);
addlistener(myClass , 'myProp' , 'PreSet' , @myClass.PreSendClass);
addlistener(myClass , 'myProp' , 'PostGet' , @myClass.PostReadClass);
addlistener(myClass , 'myProp' , 'PostSet' , @myClass.PostSendClass);
end
end
methods (Hidden)
function PreSendClass(myClass, varargin)
disp('PreSet Executed')
end
function PostSendClass(myClass, varargin)
disp('PostSet Executed')
end
function PreReadClass(myClass, varargin)
disp('PreGet Executed')
end
function PostReadClass(myClass, varargin)
disp('PostGet Executed')
end
end
end
Matlab Run examples:
>> myTest = myClass(1);
myTest.myProp = 1;
PreSet Executed
PostSet Executed
>> myVar = myTest.myProp;
myVar
PreGet Executed
PostGet Executed
myVar =
1
Everything fine with this. I can execute my functions and get the results which I want. Though, I observed, that wen I use 'Tab Completion' feature from Matlab on 'myTest.myProp', PreGet and PostGet is executed, 4 times!! Sometimes 'myProp' is a dynamic structure and I am using Tab completion to access its fields.
myTest.myProp. % Use tab completion
PreGet Executed
PostGet Executed
PreGet Executed
PostGet Executed
PreGet Executed
PostGet Executed
PreGet Executed
PostGet Executed
Is it possible to prevent this from being executed 4 times? Or if not to prevent it at least to detect it and perform and action? I can run another function when tab completion is executed (e.g. display help or tool tip in command window).
Thank you!
4 个评论
Sean de Wolski
2013-10-9
What release are you on? I am not able to reproduce this in 13b.
Florin
2013-10-9
Sean de Wolski
2013-10-9
If your Company/University's SMS is current you can upgrade to one of the newer releases at no additional cost.
Florin
2013-10-10
回答（1 个）
per isakson
2013-10-9
编辑：per isakson
2013-10-11
0 个投票
I cannot reproduce the behavior you describe with R2013a. However, there might have been a bug although I don't find one in the Bug Report. (Not all bugs are in that list.)
.
2013-10-10
Did you ask the Matlab tech support?
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2013-10-11
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