如何解决为什么 desktop.getCurrentComponent() 在 PyUNO 中返回 None ? 编辑 1
尝试恢复名为 Wavelet 的 PyUNO 示例脚本,以了解当今 LO 的工作原理并重新启动。由于 LibreOffice 和 UNO 在脚本创建时发生了一些变化,因此我遇到了问题。
设法获取桌面对象。现在我想检索打开文档的组件。我如何正确实现这一目标? desktop.getCurrentComponent()
调用返回 None
。
LibreOffice 版本:6.4.6.2.
系统:Ubuntu MATE 20.04 x86_64。
代码如下:
#!/usr/bin/python3
def TestWave(event):
wavelet = Wavelet(XSCRIPTCONTEXT)
wavelet.trigger( () )
import uno
import unohelper
import string
from com.sun.star.task import XJobExecutor
class Wavelet( unohelper.Base,XJobExecutor ):
def __init__( self,ctx ):
self.ctx = ctx
def trigger( self,args ):
desktop = self.ctx.ServiceManager.createInstanceWithContext(
"com.sun.star.frame.Desktop",self.ctx )
doc = desktop.getCurrentComponent()
print('doc:',doc)
#try:
search = doc.createSearchDescriptor()
search.SearchRegularExpression = True
search.SearchString = "\\<(k|s|v|z|o|u|i|a) "
found = doc.findFirst( search )
while found:
print("found:",found.String)
found.String = string.replace( found.String," ",u"\xa0" )
found = doc.findNext( found.End,search)
#except:
# pass
g_ImplementationHelper = unohelper.ImplementationHelper()
g_ImplementationHelper.addImplementation(
Wavelet,"name.vojta.openoffice.Wavelet",("com.sun.star.task.Job",),)
if __name__ == "__main__":
import os
# Start OpenOffice.org,listen for connections and open testing document
os.system( "loffice '--accept=socket,host=localhost,port=2002;urp;' --writer ./WaveletTest.odt &" )
# Get local context info
localContext = uno.getComponentContext()
resolver = localContext.ServiceManager.createInstanceWithContext(
"com.sun.star.bridge.UnoUrlResolver",localContext )
ctx = None
# Wait until the OO.o starts and connection is established
while ctx == None:
try:
ctx = resolver.resolve(
"uno:socket,port=2002;urp;StarOffice.ComponentContext" )
except:
pass
# Trigger our job
wavelet = Wavelet( ctx )
wavelet.trigger( () )
输出:
doc: None
Traceback (most recent call last):
File "./wavelet.py",line 62,in <module>
wavelet.trigger( () )
File "./wavelet.py",line 24,in trigger
search = doc.createSearchDescriptor()
AttributeError: 'NoneType' object has no attribute 'createSearchDescriptor'
编辑 1
解决方法
尽量不要给 desktop.getCurrentComponent()
一个变量,所以擦除 doc =
。我记得我有那个问题,但不明白为什么会这样。我只记得没有命名它会使我的代码工作。这是我能给你的唯一建议。
尝试等到文档组件可用。它奏效了:
doc = None
while doc is None:
doc = desktop.getCurrentComponent()
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