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Diffstat (limited to 'examples/example_dcopexport.py')
-rw-r--r-- | examples/example_dcopexport.py | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/examples/example_dcopexport.py b/examples/example_dcopexport.py new file mode 100644 index 0000000..66aff6a --- /dev/null +++ b/examples/example_dcopexport.py @@ -0,0 +1,136 @@ +#!/usr/bin/env python + +""" +Copyright 2004 Jim Bublitz + +Terms and Conditions + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to +deal in the Software without restriction, including without limitation the +rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +sell copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +Except as contained in this notice, the name of the copyright holder shall +not be used in advertising or otherwise to promote the sale, use or other +dealings in this Software without prior written authorization from the +copyright holder. +""" + +# This is an example of a DCOP enabled application written in Python, using +# PyKDE and the dcopexport module. Taken from server.py example in kde-bindings +# which was written by Torben Weis and Julian Rockey + +import sys +from kdecore import KApplication, KCmdLineArgs, KAboutData +from dcopexport import DCOPExObj +from qt import QString, QStringList + +""" +DCOPExObj provides all of the necessary machinery to DCOP-enable +an application: the 'process' method, marshalling/demarshalling, +and the 'features' method + +To DCOP-enable an app, + + 1. Add a class which subclasses DCOPExObj (ParrotObject in + this case). Call the DCOPExObj.__init__ method with 'id'. + If 'id' isn't specified, DCOP will assing a numerical id. + 'id' is the name of the object (eg, how it will be listed + in kdcop, or returned with a dcopClient.remoteObjects call) + + 2. Identify the methods/functions that will be exposed via + DCOP - they don't have to be methods of the DCOPExObj + class, as long as the DCOPExObj class can call them. Make + sure they take/return types that DCOPExObj supports. + + 3. For each method, call self.addMethod with the complete + method signature (return type, name, list of argument + types, but no argument names) as a string and the + Python method/function that corresponds. + + 4. That's it. +""" + +# the class which will expose methods to DCOP - the methods do NOT +# need to be a member of this class. +class DeadParrotObject (DCOPExObj): + def __init__ (self, id = 'dead parrot'): + DCOPExObj.__init__ (self, id) + + # the methods available from this app via DCOP + # addMethod (<signature>, <Python method>) + self.addMethod ('QString getParrotType()', self.get_type) + self.addMethod ('void setParrotType (QString)', self.set_type) + self.addMethod ('QString squawk()', self.squawk) + self.addMethod ('QStringList adjectives()', self.adjectives) + + # set up object variables + self.parrot_type = QString ("Norwegian Blue") + + def get_type (self): + return self.parrot_type + + def set_type (self, parrot_type): + self.parrot_type = parrot_type + + def squawk (self): + return "This parrot, a %s, is pining for the fjords" % (self.parrot_type) + + def adjectives (self): + adjList = ["passed on", "is no more", "ceased to be", "expired", "gone to meet his maker", + "a stiff", "bereft of life", "rests in peace", "metabolic processes are now history", + "off the twig", "kicked the bucket", "shuffled off his mortal coil", + "run down his curtain", "joined the bleedin' choir invisible", "THIS IS AN EX-PARROT"] + qadjList = QStringList () + for adj in adjList: + qadjList.append (adj) + + return qadjList + +description = "A basic application template" +version = "1.0" +aboutData = KAboutData ("testdcopexport", "petshop",\ + version, description, KAboutData.License_GPL,\ + "(C) 2003 whoever the author is") + +aboutData.addAuthor ("author1", "whatever they did", "email@somedomain") +aboutData.addAuthor ("author2", "they did something else", "another@email.address") + +KCmdLineArgs.init (sys.argv, aboutData) + +KCmdLineArgs.addCmdLineOptions ([("+files", "File to open")]) + +app = KApplication () +dcop = app.dcopClient () +appid = dcop.registerAs('petshop') +print "DCOP Application: %s starting" % appid + +parrot = DeadParrotObject() +another_parrot = DeadParrotObject('polly') + +print """ +Run kdcop and look for the 'petshop' application instance. + +This program exports the 'deadParrot' and 'polly' objects. +Double-clicking those object's methods will allow you to get or set data. + +To end the application, in kdcop choose the MainApplication-Interface +object and double-click the quit() method. +""" + +app.exec_loop() + + |