Ajuda do LibreOffice 24.2
Events raised by dialogs, documents, forms or graphical controls can be linked to macros, which is referred to as event-driven programming. The most common method to relate events to macros are the Events tab in menu and the Dialog Editor Control properties pane from menu.
Graphical artifacts, keyboard inputs, mouse moves and other man/machine interactions can be controlled using UNO listeners that watch for the user’s behavior. Listeners are dynamic program code alternatives to macro assignments. One may create as many UNO listeners as events to watch for. A single listener can also handle multiple user interface controls.
Os ouvintes são anexados a controlos contidos nas caixas de diálogo, bem como a eventos de documento ou de formulários. Os ouvintes também podem ser utilizados ao criar caixas de diálogo em tempo de execução, ou quando se adiciona controlos ao diálogo dinamicamente.
Este exemplo cria um ouvinte para o controlo Button1 da caixa de diálogo Dialog1 na biblioteca Standard.
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import uno, unohelper
from com.sun.star.awt import XActionListener
from com.sun.star.awt import ActionEvent
from com.sun.star.lang import EventObject
from com.sun.star.ui.dialogs.ExecutableDialogResults \
import OK, CANCEL
import msgbox as util
_MY_BUTTON = "Button1"
_MY_LABEL = 'Python ouve..'
_DLG_PROVIDER = "com.sun.star.awt.DialogProvider"
def Main(*args):
ui = createUnoDialog("Standard.Dialog1", embedded=True)
ui.Title = "Python X[any]Listener"
ctl = ui.getControl(_MY_BUTTON)
ctl.Model.Label = _MY_LABEL
act = ActionListener()
ctl.addActionListener(act)
rc = ui.execute()
if rc == OK:
MsgBox("O utilizador reconheceu o diálogo.")
elif rc == CANCEL:
MsgBox("O utilizador cancelou o diálogo.")
ui.dispose() # ui.endExecute
ctl.removeActionListener(act)
def createUnoDialog(libr_dlg: str, embedded=False):
""" Criar um diálogo da sua localização """
smgr = XSCRIPTCONTEXT.getComponentContext().ServiceManager
if embedded:
model = XSCRIPTCONTEXT.getDocument()
dp = smgr.createInstanceWithArguments(_DLG_PROVIDER, (model,))
location = "?location=document"
else:
dp = smgr.createInstanceWithContext(_DLG_PROVIDER, ctx)
location = "?location=application"
dlg = dp.createDialog("vnd.sun.star.script:"+libr_dlg+location)
return dlg
class ActionListener(unohelper.Base, XActionListener):
""" Escutar e contar os cliques de botão """
def __init__(self):
self.count = 0
def actionPerformed(self, evt: ActionEvent):
self.count = self.count + 1
#mri(evt)
if evt.Source.Model.Name == _MY_BUTTON:
evt.Source.Model.Label = _MY_LABEL+ str( self.count )
return
def disposing(self, evt: EventObject): # rotina obrigatória
pass
def MsgBox(txt: str):
mb = util.MsgBox(uno.getComponentContext())
mb.addButton("Ok")
mb.show(txt, 0, "Python")
g_exportedScripts = (Main,)
msgbox.py no diretório {instalação}/program/ tem alguns exemplos de ouvintes de botões.
Option Explicit
Const MY_LIBRARY = "Standard", MY_DIALOG = "Dialog1", MY_BUTTON = "Button1"
Const MY_LABEL = "Basic escuta.."
Dim count As Integer
Sub Main
Dim libr As Object ' com.sun.star.script.XLibraryContainer
Dim dlg As Object
Dim ui As Object ' stardiv.Toolkit.UnoDialogControl
Dim ctl As Object ' stardiv.Toolkit.UnoButtonControl
Dim act As Object ' com.sun.star.awt.XActionListener
Dim rc As Object : rc = com.sun.star.ui.dialogs.ExecutableDialogResults
BasicLibraries.LoadLibrary(MY_LIBRARY)
libr = DialogLibraries.GetByName(MY_LIBRARY)
dlg = libr.GetByName(MY_DIALOG)
ui = CreateUnoDialog(dlg)
ui.Title = "Basic X[any]Listener example"
count = 0
ctl = ui.GetControl(MY_BUTTON)
ctl.Model.Label = MY_LABEL
act = CreateUnoListener("awt_", "com.sun.star.awt.XActionListener")
ctl.addActionListener(act)
Select Case ui.Execute
Case rc.OK : MsgBox "O utilizador reconheceu o diálogo.",, "Basic"
Case rc.CANCEL : MsgBox "O utilizador cancelou o diálogo.",, "Basic"
End Select
ui.dispose ' ui.endExecute()
ctl.removeActionListener(act)
End Sub
Private Sub awt_actionPerformed(evt As com.sun.star.awt.ActionEvent)
''' Escuta e conta os cliques de botão '''
With evt.Source.Model
If .Name = MY_BUTTON Then
count = count + 1
.Label = MY_LABEL+Cstr(count)
End If
End With
End Sub ' awt_actionPerformed
Private Sub awt_disposing(evt As com.sun.star.lang.EventObject) ' mandatory Sub
' o seu código vai aqui
End Sub ' awt_disposing
Listeners are usually coded along with dialog opening. Numerous listener approaches are possible such as event handlers for dialogs or event monitors for documents or forms.