jw>c@sdZdZdZdZdZdZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl Z dZd d)d YZd d*d YZd d+dYZdd,dYZdd-dYZdefdYZdd.dYZdefdYZdefdYZdefdYZdefdYZdefd YZd!efd"YZd#efd$YZd%efd&YZd'efd(YZdS(/st I Want Options A library for managing an application's configuration, user preferences, and/or other miscellaneous options through the application itself. You provide the application, it provides the configuration management. This library has no external dependencies. It defines the following classes: * OptionConfig: reads from the option definition store. You can extend this class to read from a different format (e.g. from an XML file or a database). * OptionGroup: A container for options. You probably don't need to extend this class. * Option: Defines the semantics for an option (e.g. a boolean or a string option). You can extend this class to create options with application-specific semantics (see TimeZoneOption for a complex but generic example). * Context: Defines the unit of configuration (e.g. for a user preference engine, this is your application's notion of "user"). You should make some existing class in your application extend this. A simple FileBackedContext, which simply writes key-value pairs to a file, is provided. * OptionWrapper: Defines display semantics for your application. If you don't extend this, your option screen will look very boring and not like the rest of your application. * ConfigurationCGI: Very simple logic for an option-setting CGI. You probably want to write your own CGI that fits in with whatever Web framework you're using, but this will get you started (and is great for demos). * StringOption, LongStringOption, BooleanOption, SelectionOption, IntegerOption, EmailOption, HTMLColorOption, LanguageOption, TimeZoneOption, etc: Extensions of Option which implement different display, gathering, and validation interfaces. To use, initialize an OptionConfig object with the path to your option definition store and (optionally) an instance of OptionWrapper. Pass an instance of Context to all OptionConfig methods which require one. The option definition store looks like this: group=OptionGroup1 This is the first option group. name=option1 displayName=This is the first option in option group 1. property=Options can have arbitrary properties, but the first property must be "name". #Comments are allowed as well. name=option2 displayName=This is the second option in option group 1. group=OptionGroup2 This is the second option group. name=option1 displayName=This is the first option in option group 2. ... s*Leonard Richardson (leonardr@segfault.org)s$Revision: 1.31 $s$Date: 2003/03/19 03:56:06 $s*Copyright (c) 2002-2003 Leonard RichardsontPythoniNtstringt OptionConfigcBsteZdZd dZdZdZdZdZdZ dZ dZ d Z d Z d ZRS( syThis class reads from the option definition store. 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N(RbtgetOptionDisplayNameR_tgetOptionDescription(R R?RR[((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyRZscCs1d}|j|}|r-|j|}n|S(s=Returns true iff this option can be set in the given context.i(R\R(R R?RtrelevanttcontrollingOption((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyREs cCs7d}t|dd}|r3|jj|}n|S(siA hook method to retrieve any option whose value controls whether or not this option is relevant.RvN(RtgetattrRR(R R?tnoneRvt optionName((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyR\s cCs|jS(sRA hook method to retrieve and possibly transform an option's display name.(Rq(R R?R((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyRsscCs|jS(sQA hook method to retrieve and possibly transform an option's description.(Rr(R R?R((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyRtscCs|jS(sSA hook method to retrieve and possibly transform an option's default value.(R`(R R?R((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyRscCs|jS(sOA hook method to retrieve and possibly transform a group's description.(R.(R RR((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyROsN(RAR6RBR RlRRRRZRER\RsRtRRO(((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyRs      tFileBackedContextcBs5eZdZdZddZdZdZRS(sFor applications in which the configuration is global, affecting the entire application, you can use this simple context which keeps its configuration options in a file whose path you specify.cCs||_i|_||_tjj|jrt|jd}xC|jD]2}tj|d dd\}}||j|Errors:s
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(RRtformURLttitleRbt getVariablesRRRR1tSELECTED_GROUPRt selectedGroupt SUBMIT_BUTTONRFt saveChangest startPaget printFormtendPage(R RRRRR<RMterror((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyR s.          cCsi|_tj}|jrxx|jD]g}t||tjkrxg}x2||D]}|j|j q[Wn ||j }||j|s%ss(R(R ((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyR?s cCs dGHdS(Ns((R ((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyREscCs-d}||jkrd}n|j||S(Nt?t&(R(R textraQueryStringtaddOn((sf/home/leonardr/public_html/software/PyCon2003/examples/example2-configurationInterface/IWantOptions.pyt makeSelfURLHs cCsd|jGHdS(Ns
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