comparison mercurial/extensions.py @ 40763:c93d046d4300

extensions: add "uipopulate" hook, called per instance, not per process

In short, this is the "reposetup" function for ui. It allows us to modify
ui attributes without extending ui.__class__. Before, the only way to do
that was to abuse the config dictionary, which is copied across ui instances.

See the next patch for usage example.

40762:2cd5f1fac788

        loaded = (_extensions[extension] is not None)
        callback(loaded=loaded)
    else:
        _aftercallbacks.setdefault(extension, []).append(callback)

def bind(func, *args):
    '''Partial function application

      Returns a new function that is the partial application of args and kwargs
      to func.  For example,

40763:c93d046d4300

        loaded = (_extensions[extension] is not None)
        callback(loaded=loaded)
    else:
        _aftercallbacks.setdefault(extension, []).append(callback)

def populateui(ui):
    """Run extension hooks on the given ui to populate additional members,
    extend the class dynamically, etc.

    This will be called after the configuration is loaded, and/or extensions
    are loaded. In general, it's once per ui instance, but in command-server
    and hgweb, this may be called more than once with the same ui.
    """
    for name, mod in extensions(ui):
        hook = getattr(mod, 'uipopulate', None)
        if not hook:
            continue
        try:
            hook(ui)
        except Exception as inst:
            ui.traceback(force=True)
            ui.warn(_('*** failed to populate ui by extension %s: %s\n')
                    % (name, stringutil.forcebytestr(inst)))

def bind(func, *args):
    '''Partial function application

      Returns a new function that is the partial application of args and kwargs
      to func.  For example,