创建事件监听器

对话框、文档、表单或图形控件引发的事件可以链接到宏, 这称为「事件驱动编程」。将事件与宏关联的最常见方法是工具 – 自定义菜单中的事件选项卡,以及「工具 - 宏 – 组织对话框...」菜单中的「对话框编辑器」控件属性窗格。

图形元素、键盘输入、鼠标移动以及其他人机交互可以使用监视用户行为的 UNO 监听器来控制。监听器是代替宏分配的动态程序代码。可以根据事件数量的需要,创建不限量的 UNO 监听器。单个监听器也可以处理多个用户界面控件的事件。

创建事件监听器

监听器附加到对话框中的控件, 以及文档或表单事件。在创建运行时对话框或向对话框中动态添加控件时, 也会使用监听器。

本示例为 标准 库中的对话框 Dialog1Button1 控件创建监听器。

使用 Python


         # -*- 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 监听中..'
         _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("用户确认了对话框。")
             elif rc == CANCEL:
                 MsgBox("用户取消了对话框。")
             ui.dispose()  # ui.endExecute
             ctl.removeActionListener(act)
             
         def createUnoDialog(libr_dlg: str, embedded=False):
             """ 在对话框位置创建对话框 """
             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):
             """ 监听 & 统计按钮点击 """
             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):  # 必要的例行程序
                 pass
             
         def MsgBox(txt: str):
             mb = util.MsgBox(uno.getComponentContext())
             mb.addButton("Ok")
             mb.show(txt, 0, "Python")
             
         g_exportedScripts = (Main,)
      

msgbox.py」 (位于「{installation}/program/」目录) 有一些按钮监听器的示例。

使用 LibreOffice Basic


         Option Explicit
             
         Const MY_LIBRARY = "Standard", MY_DIALOG = "Dialog1", MY_BUTTON = "Button1"
         Const MY_LABEL = "Basic 正在监听.."
         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 "用户确认了对话框。",, "Basic"
                 Case rc.CANCEL : MsgBox "用户取消了对话框。",, "Basic"
             End Select
             ui.dispose ' ui.endExecute()
             ctl.removeActionListener(act)
         End Sub
             
         Private Sub awt_actionPerformed(evt As com.sun.star.awt.ActionEvent)
             ''' 监听 & 统计按钮点击 '''
             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
             ' 您的代码放在这里
         End Sub ' awt_disposing
      

其他事件监听器

监听器通常与对话框打开代码一起编写。可以创建许多不同的监听器,例如用于对话框的事件处理程序,或用于文档或表单的事件监视器。

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