94 lines
3.4 KiB
Python
94 lines
3.4 KiB
Python
#!/usr/bin/env python3
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# vim: sts=4 sw=4 et
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# This is a component of LinuxCNC
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# classhandler_persistent.py Copyright 2010 Michael Haberler
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#
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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'''
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example gladevcp handler class with widget and attribute persistence support
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'''
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from gladevcp.persistence import IniFile,widget_defaults,set_debug,select_widgets
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debug = 0
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class HandlerClass:
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def on_button_press(self,widget,data=None):
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print("on_button_press")
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self.anint += 1
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# show retained attributes as inifile and current values
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print("attr\tini\tcurrent")
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for k in list(self.defaults[IniFile.vars].keys()):
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print("%s\t%s\t%s" % (k,self.defaults[IniFile.vars][k],getattr(self,k,None)))
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def on_destroy(self,obj,data=None):
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'''
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save state on application exit
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'''
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print("on_destroy() - saving state")
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self.ini.save_state(self)
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def on_restore_defaults(self,button,data=None):
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'''
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example callback for 'Reset to defaults' button (unused)
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'''
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print("on_restore_defaults() - setting default state")
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self.ini.create_default_ini()
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self.ini.restore_state(self)
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def __init__(self, halcomp,builder,useropts):
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self.halcomp = halcomp
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self.builder = builder
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self.useropts = useropts
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# use the module basename for the ini file:
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self.ini_filename = __name__ + '.save'
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# choose widgets and attributes to be retained here:
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# this descriptor will not retain any attrbuts,
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# but the state of all widgets (HAL widgets and Gtk widgets
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# (subject to widget types supported by gladevcp.persistence.accessors())
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#self.defaults = { IniFile.vars: dict(),
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# IniFile.widgets : widget_defaults(<widgetlist>)
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# }
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# this descriptor will retain the listed attributes, and only
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# HAL widgets state:
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self.defaults = { IniFile.vars: { 'afloat' : 1.67, 'anint' : 42, 'abool' : True, 'astring': 'sometext' },
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IniFile.widgets : widget_defaults(select_widgets(self.builder.get_objects(), hal_only=False,output_only = False))
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}
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self.ini = IniFile(self.ini_filename,self.defaults, self.builder)
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# it is OK to use self.panel.widgets (all widgets) here because only
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# widgets whose state was saved as per descriptor will be restored
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self.ini.restore_state(self)
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def get_handlers(halcomp,builder,useropts):
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global debug
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for cmd in useropts:
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exec(cmd, globals())
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# get some detail what save/restore etc are doing
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set_debug(debug)
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return [HandlerClass(halcomp,builder,useropts)]
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