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Viewing changes to bzrlib/ui/__init__.py

  • Committer: Martin Pool
  • Date: 2009-06-22 08:33:51 UTC
  • mto: This revision was merged to the branch mainline in revision 4558.
  • Revision ID: mbp@sourcefrog.net-20090622083351-7y1qejei1b3ds1hc
Move NullProgressView and make_progress_view up to UIFactory base class

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bzrlib/ui/__init__.py
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for a GUI.
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UIFactory
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    Abstract base class
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CLIUIFactory
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    Basic text output, and can read input from the user.
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TextUIFactory
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    Can also repaint the screen to draw progress bars.
 
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    Semi-abstract base class
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SilentUIFactory
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    Produces no output and cannot take any input; useful for programs using
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    bzrlib in batch mode or for programs such as loggerhead.
 
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TextUIFactory
 
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    Standard text command-line interface, with stdin, stdout, stderr.
 
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    May make more or less advanced use of them, eg in drawing progress bars,
 
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    depending on the detected capabilities of the terminal.
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"""
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import os
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        """
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        raise NotImplementedError(self.get_boolean)
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    def make_progress_view(self):
 
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        """Construct a new ProgressView object for this UI.
 
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        Application code should normally not call this but instead
 
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        nested_progress_bar().
 
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        """
 
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        return NullProgressView()
 
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    def recommend_upgrade(self,
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        current_format_name,
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        basedir):
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        from bzrlib.ui.text import TextUIFactory
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        cls = TextUIFactory
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    return cls(stdin=stdin, stdout=stdout, stderr=stderr)
 
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class NullProgressView(object):
 
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    """Soak up and ignore progress information."""
 
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    def clear(self):
 
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        pass
 
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    def show_progress(self, task):
 
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        pass
 
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    def show_transport_activity(self, transport, direction, byte_count):
 
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        pass