713 lines
28 KiB
Plaintext
713 lines
28 KiB
Plaintext
This is magit-popup.info, produced by makeinfo version 5.2 from
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magit-popup.texi.
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Taking inspiration from regular prefix commands and prefix arguments,
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this library implements a similar abstraction; a new kind of prefix
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command that is associated with a specific set of infix arguments and
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suffix commands.
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Copyright (C) 2015-2016 Jonas Bernoulli <jonas@bernoul.li>
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You can redistribute this document and/or modify it under the terms
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of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option)
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any later version.
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This document 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 GNU
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General Public License for more details.
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INFO-DIR-SECTION Emacs
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START-INFO-DIR-ENTRY
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* Magit-Popup: (magit-popup). Infix arguments with feedback.
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END-INFO-DIR-ENTRY
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File: magit-popup.info, Node: Top, Next: Introduction, Up: (dir)
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Magit-Popup User Manual
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***********************
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Taking inspiration from regular prefix commands and prefix arguments,
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this library implements a similar abstraction; a new kind of prefix
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command that is associated with a specific set of infix arguments and
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suffix commands.
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Copyright (C) 2015-2016 Jonas Bernoulli <jonas@bernoul.li>
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You can redistribute this document and/or modify it under the terms
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of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option)
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any later version.
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This document 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 GNU
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General Public License for more details.
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* Menu:
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* Introduction::
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* Usage::
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* Defining prefix and suffix commands::
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— The Detailed Node Listing —
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Usage
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* Customizing existing popups::
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* Other options::
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Defining prefix and suffix commands
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* Defining prefix commands::
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* Defining suffix commands::
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File: magit-popup.info, Node: Introduction, Next: Usage, Prev: Top, Up: Top
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1 Introduction
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**************
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Taking inspiration from regular prefix commands and prefix arguments,
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this library implements a similar abstraction; a new kind of prefix
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command that is associated with a specific set of infix arguments and
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suffix commands.
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Invoking such a prefix command displays a popup buffer which lists
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the associated infix arguments and suffix commands. In that buffer each
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argument is prefixes with the key sequence that can be used to toggle it
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or change its value. Likewise each suffix command is prefixed with the
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key used to invoke it. Such a popup buffer might look like this:
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,-----------------------------------------
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|Switches
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| -l Show graph (--graph)
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| -d Show refnames (--decorate)
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|Options
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| =m Search messages (--grep="popup")
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| =p Search patches (-G)
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|Action
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| l Show log for current branch
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| o Show log for another branch
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'-----------------------------------------
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The user could then for example type ‘-l’ to toggle the ‘--graph’
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*switch* (when it is on then it is shown in green, otherwise in gray),
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or ‘=m’ to change the value of the *option* ‘--grep’.
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Once all arguments are as desired one invokes a suffix command, which
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causes the popup buffer to disappears. The suffix command should then
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retrieve the infix arguments in its ‘interactive’ form like this is done
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for prefix arguments.
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While such "prefix-infix-suffix" combos were inspired by regular
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prefix commands and prefix arguments, they are also quite different.
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This should illustrate the most basic differences:
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• A regular prefix commands
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/- command1
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prefix --- command2
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\- command3
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• Prefix arguments
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/- command1
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C-u ... --- command2
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\- well *any* command
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• A Prefix-Infix-Suffix combo
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/- argument1 -\ /- suffix1
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prefix----- argument2 --+-- suffix2
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^ \- argument3 -/
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| |
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'--------'
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(refresh buffer)
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This library was written as a replacement for ‘magit-key-mode’ which
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was used in Magit releases before 2.1.0. It is used to implement all
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"popups" in the current Magit release but a future release will switch
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to yet another implementation.
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This library does not depend on any other Magit libraries and it is
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distributed as a separate package, which makes it possible to use it in
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packages that are not related to Magit. But keep in mind that it will
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be deprecated eventually.
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File: magit-popup.info, Node: Usage, Next: Defining prefix and suffix commands, Prev: Introduction, Up: Top
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2 Usage
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*******
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Every popup buffers created with a prefix command contains a section
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named "Actions" listing the available suffix commands. Most buffers
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also contain a "Switches" and/or an "Options" section which list the two
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types of infix arguments separately.
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Switches are arguments that can be toggled on or off. When a switch
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is active then it is shown in color, when it is off then it is shown in
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gray (of course the details depend on the color theme in use).
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Options are arguments that have a value. When an option has a value
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then that is shown after the option itself. Because for some options
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the empty string is a valid value, options are additionally colorized
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like switches to indicate whether they are active or not.
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The events bound to suffix commands are always single alphabetic
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characters. The bindings for arguments are always two events long. For
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switches the first key is always ‘-’, for options it is always ‘=’. The
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second key is always an alphabetic character.
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By default popup buffers also feature a section listing commands
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common to all popups. To avoid conflicts with suffix commands, the
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bindings of these common commands are not alphabetic characters. This
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section is shown by default so that documentation-resistant users get a
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chance to notice them.
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-- User Option: magit-popup-show-common-commands
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This option controls whether the section which lists the commands
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that are common to all popups is initially show. We recommend you
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set this to ‘nil’ - after you have memorized that it can be shown
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on demand using ‘C-t’.
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‘C-t’ (‘magit-popup-toggle-show-common-commands’)
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Show or hide the section listing the commands shared by all popups.
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‘C-g’ (‘magit-popup-quit’)
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Quit popup buffer without invoking a suffix command.
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Without further action, setting arguments only affects the next
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suffix command. Invoking the same prefix command again resets the
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arguments to their default value, but the defaults can be changed
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directly from the popup buffer itself. For a prefix command named
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‘NAME-popup’ the default values are stored as the value of the custom
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option named ‘NAME-arguments’. While this option can be customized
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using the Custom interface, it is better to do so directly from the
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popup buffer.
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‘C-c C-c’ (‘magit-popup-set-default-arguments’)
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This sets the default value for the arguments for the current
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popup.
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Then the popup buffer is closed without invoking a suffix command;
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unless a prefix argument is used in which case the popup remains
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open.
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‘C-x C-s’ (‘magit-popup-save-default-arguments’)
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This sets the default value for the arguments for the current popup
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and saves it for future Emacs sessions.
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Then the popup buffer is closed without invoking an action; unless
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a prefix argument is used in which case the popup remains open.
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It is also possible to add additional arguments and commands to an
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existing popup, but that cannot be done directly from the popup (or the
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Custom interface). See *note Customizing existing popups: Customizing
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existing popups.
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Documentation about a popup’s arguments and commands can be shown
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directly from the popup.
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‘C-h i’ (‘magit-popup-info’)
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Show this manual.
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‘?’ (‘magit-popup-help’)
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This command reads a key sequence and then shows the documentation
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of the argument or command that sequence is bound to. In other
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words type the same keys that you would use to invoke the argument
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or command, but prefix the sequence with ‘?’.
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For suffix commands this shows the doc-string. For arguments this
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command can only show something for popups that have an associated
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man-page. If the man-page is set, then this command displays it in
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a separate buffer and puts point on the entry about the argument in
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question.
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The buffer which is used to display the documentation is selected.
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Simply press ‘q’ to leave that buffer and restore the old window
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configuration.
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While it isn’t very useful, it is possible to move around in a popup
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buffer using ‘C-p’ and ‘C-n’, and to invoke the argument or command at
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point using ‘RET’. But it is much more efficient to use the dedicated
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key bindings instead, so these commands are not listed in popup buffers
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along with the other common commands.
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* Menu:
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* Customizing existing popups::
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* Other options::
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File: magit-popup.info, Node: Customizing existing popups, Next: Other options, Up: Usage
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2.1 Customizing existing popups
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===============================
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It is possible to define additional infix arguments and suffix commands
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to an existing popup using the following functions.
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You can find some examples which use the below commands at
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<https://github.com/magit/magit/wiki/Additional-proposed-infix-arguments-and-suffix-commands>.
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-- Function: magit-define-popup-switch popup key desc switch &optional
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enable at prepend
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In POPUP, define KEY as SWITCH.
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POPUP is a popup command defined using ‘magit-define-popup’.
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SWITCH is a string representing an argument that takes no value.
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KEY is a character representing the second event in the sequence of
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keystrokes used to toggle the argument. (The first event, the
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prefix, is shared among all switches, defaults to ‘-’, and can be
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changed in ‘magit-popup-mode-keymap’).
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DESC is a string describing the purpose of the argument, it is
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displayed in the popup.
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If optional ENABLE is non-nil then the switch is on by default.
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SWITCH is inserted after all other switches already defined for
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POPUP, unless optional PREPEND is non-nil, in which case it is
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placed first. If optional AT is non-nil then it should be the KEY
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of another switch already defined for POPUP, the argument is then
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placed before or after AT, depending on PREPEND.
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-- Function: magit-define-popup-option popup key desc option &optional
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reader value at prepend
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In POPUP, define KEY as OPTION.
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POPUP is a popup command defined using ‘magit-define-popup’.
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OPTION is a string representing an argument that takes a value.
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KEY is a character representing the second event in the sequence of
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keystrokes used to set the argument’s value. (The first event, the
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prefix, is shared among all options, defaults to ‘=’, and can be
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changed in ‘magit-popup-mode-keymap’).
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DESC is a string describing the purpose of the argument, it is
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displayed in the popup.
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If optional VALUE is non-nil then the option is on by default, and
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VALUE is its default value.
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OPTION is inserted after all other options already defined for
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POPUP, unless optional PREPEND is non-nil, in which case it is
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placed first. If optional AT is non-nil then it should be the KEY
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of another option already defined for POPUP, the argument is then
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placed before or after AT, depending on PREPEND.
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-- Function: magit-define-popup-action popup key desc command &optional
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at prepend
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In POPUP, define KEY as COMMAND.
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POPUP is a popup command defined using ‘magit-define-popup’.
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COMMAND can be any command but should usually consume the popup
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arguments in its ‘interactive’ form. KEY is a character
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representing the event used invoke the action, i.e. to
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interactively call the COMMAND.
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DESC is a string describing the purpose of the action, it is
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displayed in the popup.
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COMMAND is inserted after all other commands already defined for
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POPUP, unless optional PREPEND is non-nil, in which case it is
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placed first. If optional AT is non-nil then it should be the KEY
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of another command already defined for POPUP, the command is then
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placed before or after AT, depending on PREPEND.
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-- Function: magit-define-popup-sequence-action popup key desc command
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&optional at prepend
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Like ‘magit-define-popup-action’, but modifies the value of the
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‘:sequence-actions’ property instead of ‘:actions’.
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-- Function: magit-define-popup-variable popup key desc command
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formatter &optional at prepend
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In POPUP, define KEY as COMMAND.
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POPUP is a popup command defined using ‘magit-define-popup’.
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COMMAND is a command which calls ‘magit-popup-set-variable’.
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FORMATTER is a function which calls ‘magit-popup-format-variable’.
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These two functions have to be called with the same arguments.
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KEY is a character representing the event used interactively call
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the COMMAND.
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DESC is the variable or a representation thereof. It’s not
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actually used for anything.
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COMMAND is inserted after all other commands already defined for
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POPUP, unless optional PREPEND is non-nil, in which case it is
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placed first. If optional AT is non-nil then it should be the KEY
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of another command already defined for POPUP, the command is then
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placed before or after AT, depending on PREPEND."
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-- Function: magit-change-popup-key popup type from to
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In POPUP, bind TO to what FROM was bound to. TYPE is one of
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‘:action’, ‘:sequence-action’, ‘:switch’, or ‘:option’. Bind TO
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and unbind FROM, both are characters.
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-- Function: magit-remove-popup-key popup type key
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In POPUP, remove KEY’s binding of TYPE. POPUP is a popup command
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defined using ‘magit-define-popup’. TYPE is one of ‘:action’,
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‘:sequence-action’, ‘:switch’, or ‘:option’. KEY is the character
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which is to be unbound.
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It is also possible to change other aspects of a popup by setting a
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property using ‘plist-put’. See *note Defining prefix commands:
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Defining prefix commands. for valid properties. The most likely change
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Magit users might want to make is:
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(plist-put magit-show-refs-popup :use-prefix nil)
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File: magit-popup.info, Node: Other options, Prev: Customizing existing popups, Up: Usage
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2.2 Other options
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=================
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-- User Option: magit-popup-use-prefix-argument
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This option controls the effect that the use of a prefix argument
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before entering a popup has. The *intended* default is ‘default’,
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but the *actual* default is ‘disabled’. This is necessary because
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the old popup implementation did simply forward such a pre-popup
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prefix argument to the suffix command invoked from the popup, and
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changing that without users being aware of it could lead to tears.
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• ‘disabled’
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Bring up a Custom option buffer so that the user reads this
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and then makes an informed choice.
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• ‘default’
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With a prefix argument directly invoke the popup’s default
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action (an Emacs command), instead of bringing up the popup.
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• ‘popup’
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With a prefix argument bring up the popup, otherwise directly
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invoke the popup’s default action.
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• ‘nil’
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Ignore prefix arguments.
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This option can be overridden for individual popups.
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‘magit-show-refs-popup’ for example defaults to invoking the
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default action directly. It only shows the popup buffer when a
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prefix argument is used. See *note Customizing existing popups:
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Customizing existing popups.
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-- User Option: magit-popup-manpage-package
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The Emacs package used to display man-pages, one of ‘man’ or
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‘woman’.
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-- User Option: magit-popup-display-buffer-action
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The option controls how the window used to display a popup buffer
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is created. Popup buffers are displayed using ‘display-buffer’
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with the value of this option as ACTION argument. You can also set
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this to nil and instead add an entry to ‘display-buffer-alist’.
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To emphasize the default action by making it bold use this:
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(button-type-put 'magit-popup-action-button 'format " %k %D")
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File: magit-popup.info, Node: Defining prefix and suffix commands, Prev: Usage, Up: Top
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3 Defining prefix and suffix commands
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*************************************
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If you write an extension for Magit then you should use this library now
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and later when ‘transient’ is released port to that.
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If you are considering using this library to define popups for
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packages not related to Magit, then keep in mind that it will be
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superseded eventually. Once ‘transient’ has been released I will only
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fix bugs in ‘magit-popup’ but not implement any new features.
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Also consider using ‘hydra’ instead. To some extend ‘magit-popup’
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and ‘hydra’ are similar but have a different focus. The main purpose of
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‘magit-popup’ is to pass infix arguments to suffix commands. If all you
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need is a command dispatcher then you are better of using ‘hydra’. Of
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course ‘hydra’ may also be a better fit not only because of the features
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it lacks, but also because of the features it provides, which are in
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turn missing from ‘magit-popup’.
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Here is an example of how one defines a prefix command along with its
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infix arguments, and then also one of its suffix commands.
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;;;###autoload (autoload 'magit-tag-popup "magit" nil t)
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(magit-define-popup magit-tag-popup
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"Show popup buffer featuring tagging commands."
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'magit-commands
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:man-page "git-tag"
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:switches '((?a "Annotate" "--annotate")
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(?s "Sign" "--sign")
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(?f "Force" "--force"))
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:actions '((?t "Create" magit-tag)
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(?k "Delete" magit-tag-delete)
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(?p "Prune" magit-tag-prune))
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:default-action 'magit-tag)
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;;;###autoload
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(defun magit-tag (name rev &optional args)
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"Create a new tag with the given NAME at REV."
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(interactive (list (magit-read-tag "Tag name")
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(magit-read-branch-or-commit "Place tag on")
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(magit-tag-arguments)))
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(magit-run-git-with-editor "tag" args name rev))
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|
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* Menu:
|
||
|
||
* Defining prefix commands::
|
||
* Defining suffix commands::
|
||
|
||
|
||
File: magit-popup.info, Node: Defining prefix commands, Next: Defining suffix commands, Up: Defining prefix and suffix commands
|
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|
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3.1 Defining prefix commands
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============================
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Prefix commands and their infix arguments are defined using the macro
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‘magit-define-popup’. The key bindings and descriptions of suffix
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commands are also defined using that macro, but the actual interactive
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commands have to be defined separately using plain ‘defun’.
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-- Macro: magit-define-popup name doc [group [mode [option]]] :keyword
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value…
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This macro defines a popup named NAME. The NAME should begin with
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the package prefix and by convention end with ‘-popup’, it is used
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as the name of the command which shows the popup and for an
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internal variable (whose value is used to store information about
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the popup and should not be accessed directly). DOC is the
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doc-string of the popup command.
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This macro also defines an option and a function both named
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‘SHORTNAME-arguments’, where SHORTNAME is NAME with the trailing
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‘-popup’ removed. The name of this option and this function can be
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overwritten using the optional argument OPTION, but that is rarely
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advisable. As a special case if OPTION is specified but ‘nil’,
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then this option and this function are not defined at all, which is
|
||
useful for popups that are used as simple dispatchers that offer no
|
||
arguments.
|
||
|
||
The option ‘SHORTNAME-arguments’ holds the value for the popup
|
||
arguments. It can be customized from within the popup or using the
|
||
Custom interface. It can also have a buffer local value in any
|
||
non-popup buffer. The local value for the buffer from which the
|
||
popup command was invoked, can be set from within the popup buffer.
|
||
|
||
The function ‘SHORTNAME-arguments’ returns the currently effective
|
||
value of the variable by the same name. See below for more
|
||
information.
|
||
|
||
The optional argument GROUP specifies the Custom group in which the
|
||
option is placed. If omitted then the option is placed in some
|
||
group the same way it is done when directly using ‘defcustom’ and
|
||
omitting the group.
|
||
|
||
The optional argument MODE specifies the mode used by the popup
|
||
buffer. If it is omitted or ‘nil’ then ‘magit-popup-mode’ is used.
|
||
|
||
The remaining arguments should have the form ‘[KEYWORD VALUE]...’.
|
||
|
||
The following keywords are meaningful (and by convention are
|
||
usually specified in that order):
|
||
|
||
• ‘:actions’
|
||
|
||
The actions which can be invoked from the popup. VALUE is a
|
||
list whose members have the form (KEY DESC COMMAND), see
|
||
‘magit-define-popup-action’ for details.
|
||
|
||
How the actions are split into rows and columns currently
|
||
depends on the available space and ‘:max-action-columns’.
|
||
|
||
WARNING: This will likely be change to use a more explicit
|
||
format (((KEY DESC COMMAND)…)…) before the release.
|
||
|
||
Actions are regular Emacs commands, which usually have an
|
||
‘interactive’ form setup to consume the values of the popup
|
||
‘:switches’ and ‘:options’ when invoked from the corresponding
|
||
popup, else when invoked as the default action or directly
|
||
without using the popup, the default value of the variable
|
||
‘SHORTNAME-arguments’. This is usually done by calling the
|
||
function ‘SHORTNAME-arguments’.
|
||
|
||
Members of VALUE may also be strings, assuming the first
|
||
member is also a string. Instead of just one action section
|
||
with the heading \"Actions\", multiple sections are then
|
||
inserted into the popup buffer, using these strings as
|
||
headings.
|
||
|
||
Members of VALUE may also be nil. This should only be used
|
||
together with ‘:max-action-columns’ and allows having gaps in
|
||
the action grit, which can help arranging actions sensibly.
|
||
|
||
• ‘:default-action’
|
||
|
||
The default action of the popup which is used directly instead
|
||
of displaying the popup buffer, when the popup is invoked with
|
||
a prefix argument. Also see ‘magit-popup-use-prefix-argument’
|
||
and ‘:use-prefix’, which can be used to inverse the meaning of
|
||
the prefix argument.
|
||
|
||
• ‘:use-prefix’
|
||
|
||
Controls when to display the popup buffer and when to invoke
|
||
the default action (if any) directly. This overrides the
|
||
global default set using ‘magit-popup-use-prefix-argument’.
|
||
The value, if specified, should be one of ‘default’ or
|
||
‘prefix’.
|
||
|
||
• ‘:switches’
|
||
|
||
The popup arguments which can be toggled on and off. VALUE is
|
||
a list whose members have the form ‘(KEY DESC SWITCH)’, see
|
||
‘magit-define-popup-switch’ for details.
|
||
|
||
• ‘:options’
|
||
|
||
The popup arguments which take a value, as in "–opt~OPTVAL".
|
||
VALUE is a list whose members have the form (KEY DESC OPTION
|
||
READER), see ‘magit-define-popup-option’ for details.
|
||
|
||
• ‘:variables’
|
||
|
||
Git variables which can be set from the popup. VALUE is a
|
||
list whose members have the form (KEY DESC COMMAND FORMATTER),
|
||
see ‘magit-define-popup-variable’ for details.
|
||
|
||
• ‘:default-arguments’
|
||
|
||
The default arguments, a list of switches (which are then
|
||
enabled by default) and options with there default values, as
|
||
in "–OPT~OPTVAL\".
|
||
|
||
• ‘:sequence-predicate’
|
||
|
||
When this function returns non-nil, then the popup uses
|
||
‘:sequence-actions’ instead of ‘:actions’, and does not show
|
||
the ‘:switches’ and ‘:options’.
|
||
|
||
• ‘:sequence-actions’
|
||
|
||
The actions which can be invoked from the popup, when
|
||
‘:sequence-predicate’ returns non-nil.
|
||
|
||
• ‘:setup-function’
|
||
|
||
When this function is specified, then it is used instead of
|
||
‘magit-popup-default-setup’.
|
||
|
||
• ‘:refresh-function’
|
||
|
||
When this function is specified, then it is used instead of
|
||
calling ‘magit-popup-insert-section’ three times with symbols
|
||
‘magit-popup-switch-button’, ‘magit-popup-option-button’, and
|
||
finally ‘magit-popup-action-button’ as argument.
|
||
|
||
• ‘:man-page’
|
||
|
||
The name of the manpage to be displayed when the user requests
|
||
help for an argument.
|
||
|
||
|
||
File: magit-popup.info, Node: Defining suffix commands, Prev: Defining prefix commands, Up: Defining prefix and suffix commands
|
||
|
||
3.2 Defining suffix commands
|
||
============================
|
||
|
||
Commands intended to be invoked from a particular popup should determine
|
||
the currently effective arguments by calling the function
|
||
‘SHORTNAME-arguments’ inside their ‘interactive’ form. This function is
|
||
created by the ‘magit-define-popup’ macro. For a popup named
|
||
‘prefix-foo-popup’ the name of this function is ‘prefix-foo-arguments’.
|
||
|
||
When the command was invoked as an action in the respective popup,
|
||
then this function returns the arguments that were set in the popup.
|
||
Otherwise when the command was invoked as the default of the popup (by
|
||
calling the popup command with a prefix argument), or without using the
|
||
popup command at all, then this function returns the buffer-local or
|
||
global value of the variable ‘SHORTNAME-arguments’.
|
||
|
||
Internally arguments are handled as a list of strings. This might
|
||
not be appropriate for the intended use inside commands, or it might be
|
||
necessary to manipulate that list somehow, i.e. to split "–ARG=VAL"
|
||
into "–ARG""VAL". This should be done by advising or redefining the
|
||
function ‘SHORTNAME-arguments’.
|
||
|
||
Internally ‘SHORNAME-arguments’ used following variables and
|
||
function. Except when redefining the former, you should not use these
|
||
directly.
|
||
|
||
-- Variable: magit-current-popup
|
||
|
||
The popup from which this editing command was invoked.
|
||
|
||
-- Variable: magit-current-popup-args
|
||
|
||
The value of the popup arguments for this editing command.
|
||
|
||
If the current command was invoked from a popup, then this is a
|
||
list of strings of all the set switches and options. This includes
|
||
arguments which are set by default not only those explicitly set
|
||
during this invocation.
|
||
|
||
When the value is nil, then that can be because no argument is set,
|
||
or because the current command wasn’t invoked from a popup at all.
|
||
|
||
-- Function: magit-current-popup-args &rest args
|
||
|
||
This function returns the value of the popup arguments for this
|
||
editing command. The value is the same as that of the variable by
|
||
the same name, except that FILTER is applied. FILTER is a list of
|
||
regexps; only arguments that match one of them are returned. The
|
||
first element of FILTER may also be ‘:not’ in which case only
|
||
arguments that don’t match any of the regexps are returned, or
|
||
‘:only’ which doesn’t change the behavior.
|
||
|
||
|
||
|
||
Tag Table:
|
||
Node: Top994
|
||
Node: Introduction2170
|
||
Node: Usage4747
|
||
Node: Customizing existing popups9404
|
||
Node: Other options14932
|
||
Node: Defining prefix and suffix commands16981
|
||
Node: Defining prefix commands19077
|
||
Node: Defining suffix commands25757
|
||
|
||
End Tag Table
|
||
|
||
|
||
Local Variables:
|
||
coding: utf-8
|
||
End:
|