Honestly, since I don't use the old-style syntax, I'm not sure. However,
using the new-style signals, I think the following does what you want.
class LineEditCompleter(QtGui.QLineEdit):
#create custom signal
signalTextChanged=QtCore.Signal(list,str)
def __init__(self,parent=None):
QtGui.QLineEdit.__init__(self,parent)
self.textChanged.connect(self.text_changed)
def text_changed(self,text):
print "from text_changed:",text
allText=unicode(text)
prefix=allText.split(",")[-1].strip()
names=list()
for name in allText.split(","):
name=unicode(name).strip()
if name!="":
names.append(str(name))
self.signalTextChanged.emit(names, prefix)
def complete_name(self,text):
cursor_pos=self.cursorPosition()
before_text=unicode(self.text())[:cursor_pos]
after_text=unicode(self.text())[cursor_pos:]
prefix_len=len(before_text.split(",")[-1].strip())
self.setText("%s%s,
%s"%(before_text[:cursor_pos-prefix_len],text,after_text))
self.setCursorPosition(cursor_pos-prefix_len+len(text)+2)
class NameCompleter(QtGui.QCompleter):
def __init__(self,names=list(),parent=None):
QtGui.QCompleter.__init__(self,names,parent)
self.names=names
def updateNames(self,names,completion_prefix):
print "from updateNames:",names,completion_prefix
_names=list()
for name in names:
if not self.names.__contains__(name):
_names.append(name)
model=QtGui.QStringListModel(_names,self)
self.setModel(model)
self.setCompletionPrefix(completion_prefix)
if completion_prefix.strip() !="":
self.complete()
def main():
app=QtGui.QApplication(sys.argv)
nameEditor=LineEditCompleter()
names=list()
names.append("ABC")
names.append("DEF")
names.append("AAAA")
completer=NameCompleter(names)
completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
nameEditor.signalTextChanged.connect(completer.updateNames)
completer.activated.connect(nameEditor.complete_name)
completer.setWidget(nameEditor)
nameEditor.show()
sys.exit(app.exec_())
if __name__=="__main__":
main()
On Thu, Sep 22, 2011 at 8:51 PM, Ravi ..........! <[email protected]>wrote:
> Hi Ben,
> I have modified the signal emit statement like you said. even
> though it is still not firing /calling "updateNames" slot in NameCompleter
> . What i have to do now? please suggest me.
>
>
> self.emit(QtCore.SIGNAL("signalTextChanged"),names,prefix)
>
>
> QtCore.QObject.connect(nameEditor,QtCore.SIGNAL("signalTextChanged(list,str)"),completer.updateNames)
>
> thank you.
>
>
> On Thu, Sep 22, 2011 at 6:36 PM, Ben Breslauer <[email protected]>wrote:
>
>> When calling emit, you don't specify the signature. So in
>> LineEditCompleter.text_changed, you should call
>>
>> self.emit(QtCore.SIGNAL("signalTextChanged"),names,prefix)
>>
>> In addition, when using old-style signals, you don't need to explicitly
>> define the signal using QtCore.Signal, Because when you call QObject.emit
>> (or here, self.emit), it creates the signal dynamically.
>>
>> Hope that helps!
>>
>> Ben
>>
>> On Thu, Sep 22, 2011 at 6:47 PM, Ravi ..........!
>> <[email protected]>wrote:
>>
>>> Hi,
>>> even after changing the name of the Signal still i'm getting error.
>>>
>>> *"
>>> self.emit(QtCore.SIGNAL("signalTextChanged(list,str)"),names,prefix)
>>> TypeError: Unknown type used to emit a signal: list"*
>>>
>>> class LineEditCompleter(QtGui.QLineEdit):
>>> #create custom signal
>>> signalTextChanged=QtCore.Signal(list,str)
>>> def __init__(self,parent=None):
>>> QtGui.QLineEdit.__init__(self,parent)
>>>
>>> self.connect(self,QtCore.SIGNAL("textChanged(QString)"),self.text_changed)
>>>
>>> def text_changed(self,text):
>>> print "from text_changed:",text
>>> allText=unicode(text)
>>> prefix=allText.split(",")[-1].strip()
>>>
>>> names=list()
>>> for name in allText.split(","):
>>> name=unicode(name).strip()
>>> if name!="":
>>> names.append(str(name))
>>>
>>>
>>> self.emit(QtCore.SIGNAL("signalTextChanged(list,str)"),names,prefix)
>>>
>>> def complete_name(self,text):
>>> cursor_pos=self.cursorPosition()
>>> before_text=unicode(self.text())[:cursor_pos]
>>> after_text=unicode(self.text())[cursor_pos:]
>>> prefix_len=len(before_text.split(",")[-1].strip())
>>> self.setText("%s%s,
>>> %s"%(before_text[:cursor_pos-prefix_len],text,after_text))
>>> self.setCursorPosition(cursor_pos-prefix_len+len(text)+2)
>>>
>>> class NameCompleter(QtGui.QCompleter):
>>> def __init__(self,names=list(),parent=None):
>>> QtGui.QCompleter.__init__(self,names,parent)
>>> self.names=names
>>>
>>> def updateNames(self,names,completion_prefix):
>>> print "from updateNames:",names,completion_prefix
>>> _names=list()
>>> for name in names:
>>> if not self.names.__contains__(name):
>>> _names.append(name)
>>>
>>> model=QtGui.QStringListModel(_names,self)
>>> self.setModel(model)
>>>
>>> self.setCompletionPrefix(completion_prefix)
>>> if completion_prefix.strip() !="":
>>> self.complete()
>>>
>>>
>>> def main():
>>> app=QtGui.QApplication(sys.argv)
>>> nameEditor=LineEditCompleter()
>>> names=list()
>>> names.append("ABC")
>>> names.append("DEF")
>>> names.append("AAAA")
>>> completer=NameCompleter(names)
>>> completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
>>>
>>> QtCore.QObject.connect(nameEditor,QtCore.SIGNAL("signalTextChanged(list,str)"),completer.updateNames)
>>>
>>> QtCore.QObject.connect(completer,QtCore.SIGNAL("activated(QString)"),nameEditor.complete_name)
>>> completer.setWidget(nameEditor)
>>> nameEditor.show()
>>> sys.exit(app.exec_())
>>>
>>> if __name__=="__main__":
>>> main()
>>>
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>>>
>>>
>>
>
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