62 lines
2.5 KiB
Groff
62 lines
2.5 KiB
Groff
.TH "Observable" 3 "Fri Oct 1 2021" "Version 1.0" "Katabatic - Routing Toolbox" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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Observable \- \fBObserver\fP Design Pattern, Subject part\&.
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.SH SYNOPSIS
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.br
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.PP
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.SS "Public Member Functions"
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.in +1c
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.ti -1c
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.RI "\fBObservable\fP ()"
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.br
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.ti -1c
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.RI "template<typename T > T * \fBgetObserver\fP ()"
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.br
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.ti -1c
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.RI "void \fBaddObserver\fP (\fBBaseObserver\fP *)"
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.br
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.ti -1c
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.RI "void \fBremoveObserver\fP (\fBBaseObserver\fP *)"
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.br
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.ti -1c
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.RI "void \fBnotify\fP (unsigned int flags)"
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.br
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.in -1c
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.SH "Detailed Description"
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.PP
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\fBObserver\fP Design Pattern, Subject part\&.
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\fBObservable\fP is the implementation of the \fIsubject\fP part of the \fBObserver\fP design pattern\&. For the time beeing it's a simplificated version that allows only one \fBObserver\fP to watch the subject\&.
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.PP
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\fBObservable\fP is designed to be an attribute of the subject, not one of it's base class\&.
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.PP
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This implantation is completly generic and has nothing specific to \fBKatabatic\fP\&. It may be moved sometimes in Hurricane at Property level in \fBHurricane::DBo\fP\&.
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.PP
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\fBNote to Myself:\fP \fBObserver\fP pattern is the one behind signal/slots\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "\fBObservable\fP ()\fC [inline]\fP"
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Default and only constructor\&. The copy constructor is disabled (made private and unimplemented)\&.
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.SH "Member Function Documentation"
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.PP
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.SS "T * getObserver ()\fC [inline]\fP"
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\fBReturns:\fP The (only) observer, \fCNULL\fP if there is none\&. It is the object of which the \fBObserver\fP is an attribute, that is, it's \fIowner\fP, and not the \fBObserver\fP itself which is returned\&.
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.SS "void addObserver (\fBBaseObserver\fP * observer)\fC [inline]\fP"
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Adds an observer\&. If more than one is added, throw an error\&.
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.SS "void removeObserver (\fBBaseObserver\fP * observer)\fC [inline]\fP"
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Removes an observer\&. If the observer do not belong to this observable, throw an exception\&.
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.SS "void notify (unsigned int flags)\fC [inline]\fP"
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Used by the subject to signal a change in it's state to the observers\&. The \fCflags\fP parameter can be used to indicates what kind of change is occuring\&. Values for \fCflags\fP are defined between the subject and the observers\&.
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.PP
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References BaseObserver::notify()\&.
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.PP
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Referenced by AutoSegment::_invalidate(), AutoSegment::_postCreate(), AutoSegment::_preDestroy(), and AutoSegment::revalidate()\&.
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Katabatic - Routing Toolbox from the source code\&.
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