Mercurial > public > mercurial-scm > hg
comparison mercurial/extensions.py @ 40729: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.
| author | Yuya Nishihara <yuya@tcha.org> |
|---|---|
| date | Mon, 12 Nov 2018 21:10:51 +0900 |
| parents | cfa564037789 |
| children | 6f2510b581a0 |
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| 40728:2cd5f1fac788 | 40729:c93d046d4300 |
|---|---|
| 403 loaded = (_extensions[extension] is not None) | 403 loaded = (_extensions[extension] is not None) |
| 404 callback(loaded=loaded) | 404 callback(loaded=loaded) |
| 405 else: | 405 else: |
| 406 _aftercallbacks.setdefault(extension, []).append(callback) | 406 _aftercallbacks.setdefault(extension, []).append(callback) |
| 407 | 407 |
| 408 def populateui(ui): | |
| 409 """Run extension hooks on the given ui to populate additional members, | |
| 410 extend the class dynamically, etc. | |
| 411 | |
| 412 This will be called after the configuration is loaded, and/or extensions | |
| 413 are loaded. In general, it's once per ui instance, but in command-server | |
| 414 and hgweb, this may be called more than once with the same ui. | |
| 415 """ | |
| 416 for name, mod in extensions(ui): | |
| 417 hook = getattr(mod, 'uipopulate', None) | |
| 418 if not hook: | |
| 419 continue | |
| 420 try: | |
| 421 hook(ui) | |
| 422 except Exception as inst: | |
| 423 ui.traceback(force=True) | |
| 424 ui.warn(_('*** failed to populate ui by extension %s: %s\n') | |
| 425 % (name, stringutil.forcebytestr(inst))) | |
| 426 | |
| 408 def bind(func, *args): | 427 def bind(func, *args): |
| 409 '''Partial function application | 428 '''Partial function application |
| 410 | 429 |
| 411 Returns a new function that is the partial application of args and kwargs | 430 Returns a new function that is the partial application of args and kwargs |
| 412 to func. For example, | 431 to func. For example, |