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New director example

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5087 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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William S Fulton 2003-09-06 15:54:07 +00:00
commit e871ca2862
6 changed files with 102 additions and 0 deletions
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13
Examples/java/callback/.cvsignore Normal file
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*.class
*.java
*_wrap.c
*_wrap.cxx
*.dll
*.dsw
*.exp
*.lib
*.ncb
*.opt
*.plg
Release
Debug

18
Examples/java/callback/Makefile Normal file
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TOP = ../..
SWIG = $(TOP)/../swig
CXXSRCS = example.cxx
TARGET = example
INTERFACE = example.i
SWIGOPT =
all:: java
java::
$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' java_cpp
javac *.java
clean::
$(MAKE) -f $(TOP)/Makefile java_clean
check: all

4
Examples/java/callback/example.cxx Normal file
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/* File : example.cxx */
#include "example.h"

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Examples/java/callback/example.h Normal file
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/* File : example.h */
#include <cstdio>
#include <iostream>
class Callback {
public:
virtual ~Callback() { std::cout << "Callback::~Callback()" << std:: endl; }
virtual void run() { std::cout << "Callback::run()" << std::endl; }
};
class Caller {
private:
Callback *_callback;
public:
Caller(): _callback(0) {}
~Caller() { delCallback(); }
void delCallback() { _callback = 0; }
void setCallback(Callback *cb) { delCallback(); _callback = cb; }
void call() { if (_callback) _callback->run(); }
};

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Examples/java/callback/example.i Normal file
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/* File : example.i */
%module(directors="1") example
%{
#include "example.h"
%}
// %include "typemaps.i"
// %include "std_vector.i"
%include "std_string.i"
/* turn on director wrapping Callback */
%feature("director") Callback;
%include "example.h"

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Examples/java/callback/index.html Normal file
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<html>
<head>
<title>SWIG:Examples:java:callback</title>
</head>
<body bgcolor="#ffffff">
<tt>SWIG/Examples/python/extend/</tt>
<hr>
<H2>Implementing C++ callbacks in Java</H2>
<tt>$Header$</tt><br>
<p>
This example illustrates how to use directors to implement C++ callbacks in Java.
</p>
<p>
Please note that unlike Python, Java does not have an equivalent concept of
weak references, so the program has to manually clean up after objects. The
implication of this is that the <code>Caller</code> class cannot claim
ownership of the <code>Callback</code> object in <code>Caller.setCallback()</code>
and delete it.
</p>
<hr>
</body>
</html>