121 lines
3.9 KiB
Python
121 lines
3.9 KiB
Python
# Terminator by Chris Jones <cmsj@tenshu.net>
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# GPL v2 only
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"""factory.py - Maker of objects
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>>> maker = Factory()
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>>> window = maker.make_window()
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>>> maker.isinstance(window, 'Window')
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True
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>>> terminal = maker.make_terminal()
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>>> maker.isinstance(terminal, 'Terminal')
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True
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>>> hpaned = maker.make_hpaned()
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>>> maker.isinstance(hpaned, 'HPaned')
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True
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>>> vpaned = maker.make_vpaned()
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>>> maker.isinstance(vpaned, 'VPaned')
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True
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"""
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from .borg import Borg
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from .util import dbg, err, inject_uuid
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# pylint: disable-msg=R0201
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# pylint: disable-msg=W0613
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class Factory(Borg):
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"""Definition of a class that makes other classes"""
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types = {'Terminal': 'terminal',
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'VPaned': 'paned',
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'HPaned': 'paned',
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'Paned': 'paned',
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'Notebook': 'notebook',
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'Container': 'container',
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'Window': 'window'}
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types_keys = list(types.keys())
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instance_types = {}
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instance_types_keys = []
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def __init__(self):
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"""Class initialiser"""
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Borg.__init__(self, self.__class__.__name__)
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self.prepare_attributes()
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def prepare_attributes(self):
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"""Required by the borg, but a no-op here"""
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pass
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def isinstance(self, product, classtype):
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"""Check if a given product is a particular type of object"""
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if classtype in self.types_keys:
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# This is now very ugly, but now it's fast :-)
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# Someone with real Python skills should fix this to be less insane.
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# Optimisations:
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# - swap order of imports, otherwise we throw ImportError
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# almost every time
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# - cache everything we can
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try:
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type_key = 'terminatorlib.%s' % self.types[classtype]
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if type_key not in self.instance_types_keys:
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self.instance_types[type_key] = __import__(type_key, None, None, [''])
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self.instance_types_keys.append(type_key)
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module = self.instance_types[type_key]
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except ImportError:
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type_key = self.types[classtype]
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if type_key not in self.instance_types_keys:
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self.instance_types[type_key] = __import__(type_key, None, None, [''])
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self.instance_types_keys.append(type_key)
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module = self.instance_types[type_key]
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return(isinstance(product, getattr(module, classtype)))
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else:
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err('Factory::isinstance: unknown class type: %s' % classtype)
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return(False)
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def type(self, product):
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"""Determine the type of an object we've previously created"""
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for atype in self.types:
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# Skip over generic types
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if atype in ['Container', 'Paned']:
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continue
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if self.isinstance(product, atype):
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return(atype)
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return(None)
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def make(self, product, **kwargs):
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"""Make the requested product"""
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try:
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func = getattr(self, 'make_%s' % product.lower())
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except AttributeError:
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err('Factory::make: requested object does not exist: %s' % product)
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return(None)
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dbg('created a %s' % product)
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output = func(**kwargs)
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inject_uuid(output)
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return(output)
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def make_window(self, **kwargs):
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"""Make a Window"""
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from . import window
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return(window.Window(**kwargs))
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def make_terminal(self, **kwargs):
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"""Make a Terminal"""
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from . import terminal
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return(terminal.Terminal())
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def make_hpaned(self, **kwargs):
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"""Make an HPaned"""
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from . import paned
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return(paned.HPaned())
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def make_vpaned(self, **kwargs):
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"""Make a VPaned"""
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from . import paned
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return(paned.VPaned())
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def make_notebook(self, **kwargs):
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"""Make a Notebook"""
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from . import notebook
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return(notebook.Notebook(kwargs['window']))
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