Re: [Jython-users] Swing examples

[Jeff E. <je...@ad...>]

Ashish,


The default list cell renderer renders the objects in the list
with the result of toString.  Instances of Python classes do
not return the result of __repr__ or __str__ for the Java
toString method.  You could write a replacement cell renderer
that calls the __str__ method for PyInstances.

Perhaps something like in Jython:

class PyInstanceListCellRenderer(DefaultListCellRenderer):
   def getListCellRendererComponent(self,list, \
           value, index, selected, focus):
     return DefaultListCellRenderer.getListCellRendererComponent(self,\
           list,`value`,index,selected,focus)


myList = JList(cellRenderer=PyInstanceListCellRenderer())


Jeff Emanuel



BillWorker 2i wrote:

> Okay, I just have modified your code to include a few more classes. If you
> run the script you will see that only for PyClass5, the one that inherits
> from java.lang.Object, the JList shows a proper string in the list.
> 
> Ashish
> 
> ----------  code ---------
> import java
> import javax.swing as swing
> 
> class PyClass1:
> pass
> 
> class PyClass2:
> def __repr__(self):
> return 'PyClass2'
> 
> class PyClass3:
> def __str__(self):
> return 'PyClass3'
> 
> class PyClass4:
> def toString(self):
> return 'PyClass4'
> 
> class PyClass5(java.lang.Object):
> def toString(self):
> return 'PyClass5'
> 
> 
> class TestModel(swing.AbstractListModel):
> def __init__(self):
> self.classList = [PyClass1(), PyClass2(), PyClass3(), PyClass4(),
> PyClass5()]
> 
> def getElementAt(self, i):
> return self.classList[i]
> 
> def getSize(self):
> return len(self.classList)
> 
> 
> frame = swing.JFrame('test')
> jlist = swing.JList(TestModel())
> frame.contentPane.add(jlist)
> frame.pack()
> frame.visible = 1
> 
> 
> 
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