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Viewing changes to Jokosher/ui/StatusBar.py

  • Committer: Mike Sheldon
  • Date: 2009-06-19 17:12:30 UTC
  • mfrom: (1076.1.19 joko-main)
  • Revision ID: mike@mikeasoft.com-20090619171230-h80vj2sykyg9kms6
Merge from trunk

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Jokosher/ui/StatusBar.py
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#=========================================================================
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class StatusBar(gtk.HBox):
 
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class StatusBar(gtk.Statusbar):
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        """
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        Implements an improved status bar which allows pango markup styles (bold, italics, etc).
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        """
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                """
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                Creates a new instance of StatusBar with no messages shown.
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                """
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                gtk.HBox.__init__(self)
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                self.latest_id = 0
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                self.label = gtk.Label()
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                self.label.set_justify(gtk.JUSTIFY_LEFT)
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                self.pack_start(self.label, False)
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                # message stack is a dictionary as this is a very easy type
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                # to add and remove from
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                self.stack = {}
 
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                gtk.Statusbar.__init__(self)
 
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                # gtk.Statusbar contains a label inside a frame inside itself
 
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                self.label = self.get_children()[0].get_children()[0]
 
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                self.label.set_use_markup(True)
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        #_____________________________________________________________________
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                Return:
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                        the value of the next valid message ID.
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                """
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                # increment message_id - this will be key for
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                # message and highest message_id will be 'top of stack'
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                self.latest_id += 1
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                self.stack[self.latest_id] = message
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                self.DisplayTopOfStack()
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                return self.latest_id
 
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                message_id = self.push(0, message)
 
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                self.label.set_use_markup(True)
 
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                return message_id
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        #_____________________________________________________________________
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                Parameters:
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                        message_id -- numerical id of the message to be removed from the StatusBar.
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                """
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                # remove message from stack (first check if it's really there)
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                if message_id in self.stack:
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                        del self.stack[message_id]
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                self.DisplayTopOfStack()
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        #_____________________________________________________________________
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        def DisplayTopOfStack(self):
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                """
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                Updates the StatusBar display when a message is added or removed.
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                """
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                # if stack is now empty then clear status bar
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                if len(self.stack) == 0:
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                        self.label.set_markup("")
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                        return
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                # find the message at the top of the stack and display it
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                self.label.set_markup(self.stack[max(self.stack.keys())])
 
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                self.remove(0, message_id)
 
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                self.label.set_use_markup(True)
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        #_____________________________________________________________________
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