89 lines
3.9 KiB
Python
89 lines
3.9 KiB
Python
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# ------------------------------------------------------------------------------
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# This file is part of Appy, a framework for building applications in the Python
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# language. Copyright (C) 2007 Gaetan Delannay
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# Appy is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 3 of the License, or (at your option) any later
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# version.
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# Appy is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License along with
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# Appy. If not, see <http://www.gnu.org/licenses/>.
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# ------------------------------------------------------------------------------
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from appy import Object
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# ------------------------------------------------------------------------------
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class Page:
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'''Used for describing a page, its related phase, show condition, etc.'''
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subElements = ('save', 'cancel', 'previous', 'next', 'edit')
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def __init__(self, name, phase='main', show=True, showSave=True,
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showCancel=True, showPrevious=True, showNext=True,
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showEdit=True):
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self.name = name
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self.phase = phase
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self.show = show
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# When editing the page, must I show the "save" button?
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self.showSave = showSave
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# When editing the page, must I show the "cancel" button?
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self.showCancel = showCancel
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# When editing the page, and when a previous page exists, must I show
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# the "previous" button?
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self.showPrevious = showPrevious
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# When editing the page, and when a next page exists, must I show the
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# "next" button?
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self.showNext = showNext
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# When viewing the page, must I show the "edit" button?
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self.showEdit = showEdit
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@staticmethod
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def get(pageData):
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'''Produces a Page instance from p_pageData. User-defined p_pageData
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can be:
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(a) a string containing the name of the page;
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(b) a string containing <pageName>_<phaseName>;
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(c) a Page instance.
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This method returns always a Page instance.'''
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res = pageData
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if res and isinstance(res, basestring):
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# Page data is given as a string.
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pageElems = pageData.rsplit('_', 1)
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if len(pageElems) == 1: # We have case (a)
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res = Page(pageData)
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else: # We have case (b)
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res = Page(pageData[0], phase=pageData[1])
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return res
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def isShowable(self, obj, layoutType, elem='page'):
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'''Must this page be shown for p_obj? "Show value" can be True, False
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or 'view' (page is available only in "view" mode).
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If p_elem is not "page", this method returns the fact that a
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sub-element is viewable or not (buttons "save", "cancel", etc).'''
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# Define what attribute to test for "showability".
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showAttr = 'show'
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if elem != 'page':
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showAttr = 'show%s' % elem.capitalize()
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# Get the value of the show attribute as identified above.
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show = getattr(self, showAttr)
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if callable(show):
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show = show(obj.appy())
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# Show value can be 'view', for example. Thanks to p_layoutType,
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# convert show value to a real final boolean value.
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res = show
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if res == 'view': res = layoutType == 'view'
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return res
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def getInfo(self, obj, layoutType):
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'''Gets information about this page, for p_obj, as an object.'''
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res = Object()
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for elem in Page.subElements:
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setattr(res, 'show%s' % elem.capitalize(), \
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self.isShowable(obj, layoutType, elem=elem))
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return res
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# ------------------------------------------------------------------------------
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