118 lines
3.8 KiB
Java
118 lines
3.8 KiB
Java
#
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# This file is part of the LibreOffice project.
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#
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# This file incorporates work covered by the following license notice:
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed
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# with this work for additional information regarding copyright
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# ownership. The ASF licenses this file to you under the Apache
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# License, Version 2.0 (the "License"); you may not use this file
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# except in compliance with the License. You may obtain a copy of
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# the License at http://www.apache.org/licenses/LICENSE-2.0 .
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#
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import traceback
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import uno
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from abc import ABCMeta, abstractmethod
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from com.sun.star.util import Date
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from com.sun.star.util import Time
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from datetime import datetime
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'''
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DataAware objects are used to live-synchronize UI and DataModel/DataObject.
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It is used as listener on UI events, to keep the DataObject up to date.
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This class, as a base abstract class, sets a frame of functionality,
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delegating the data Object get/set methods to a Value object,
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and leaving the UI get/set methods abstract.
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Note that event listening is *not* a part of this model.
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the updateData() or updateUI() methods should be programmatically called.
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in child classes, the updateData() will be bound to UI event calls.
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<br><br>
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This class holds references to a Data Object and a Value object.
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The Value object "knows" how to get and set a value from the
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Data Object.
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'''
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class DataAware(object):
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__metaclass__ = ABCMeta
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'''
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creates a DataAware object for the given data object and Value object.
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@param dataObject_
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@param value_
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'''
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def __init__(self, dataObject_, field_):
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self._dataObject = dataObject_
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self._field = field_
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'''
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sets the given value to the UI control
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@param newValue the value to set to the ui control.
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'''
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@abstractmethod
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def setToUI (self,newValue):
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pass
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'''
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gets the current value from the UI control.
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@return the current value from the UI control.
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'''
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@abstractmethod
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def getFromUI (self):
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pass
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'''
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updates the UI control according to the
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current state of the data object.
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'''
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def updateUI(self):
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try:
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data = getattr(self._dataObject, self._field)
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except Exception:
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data = uno.invoke(self._dataObject, "get" + self._field, ())
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ui = self.getFromUI()
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if data is not ui:
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try:
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self.setToUI(data)
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except Exception:
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traceback.print_exc()
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'''
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updates the DataObject according to
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the current state of the UI control.
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'''
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def updateData(self):
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useUno = False
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try:
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try:
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data = getattr(self._dataObject, self._field)
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except Exception:
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useUno = True
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data = uno.invoke(self._dataObject, "get" + self._field, ())
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ui = self.getFromUI()
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if data is not ui:
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if isinstance(ui,Date):
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d = datetime(ui.Year, ui.Month, ui.Day)
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ui = d.strftime('%d/%m/%y')
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elif isinstance(ui,Time):
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t = datetime(1, 1, 1, ui.Hours, ui.Minutes)
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ui = t.strftime('%H:%M')
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if useUno:
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uno.invoke(self._dataObject, "set" + self._field, (ui,))
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else:
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if isinstance(ui,tuple):
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#Listbox Element
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ui = ui[0]
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setattr(self._dataObject, self._field, ui)
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except Exception:
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traceback.print_exc()
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