<spanid="evennia-utils-evmenu"></span><h1>evennia.utils.evmenu<aclass="headerlink"href="#module-evennia.utils.evmenu"title="Permalink to this headline">¶</a></h1>
<p>EvMenu</p>
<p>This implements a full menu system for Evennia.</p>
<p>To start the menu, just import the EvMenu class from this module.
temporary state variables between nodes, since this NAttribute is
deleted when the menu is exited.</p>
<p>The return values must be given in the above order, but each can be
returned as None as well. If the options are returned as None, the
menu is immediately exited and the default “look” command is called.</p>
<ulclass="simple">
<li><dlclass="simple">
<dt><strong>text</strong> (str, tuple or None): Text shown at this node. If a tuple, the</dt><dd><p>second element in the tuple is a help text to display at this
node when the user enters the menu help command there.</p>
</dd>
</dl>
</li>
<li><p><strong>options</strong> (tuple, dict or None): If <strong>None</strong>, this exits the menu.
If a single dict, this is a single-option node. If a tuple,
it should be a tuple of option dictionaries. Option dicts have the following keys:</p>
<ul>
<li><p><strong>key</strong> (str or tuple, optional): What to enter to choose this option.
If a tuple, it must be a tuple of strings, where the first string is the
key which will be shown to the user and the others are aliases.
If unset, the options’ number will be used. The special key <strong>_default</strong>
marks this option as the default fallback when no other option matches
the user input. There can only be one <strong>_default</strong> option per node. It
will not be displayed in the list.</p></li>
<li><p><strong>desc</strong> (str, optional): This describes what choosing the option will do.</p></li>
<li><p><strong>goto</strong> (str, tuple or callable): If string, should be the name of node to go to
when this option is selected. If a callable, it has the signature
<strong>callable(caller[,raw_input][,**kwargs])</strong>. If a tuple, the first element
is the callable and the second is a dict with the <strong>**kwargs</strong> to pass to
the callable. Those kwargs will also be passed into the next node if possible.
Such a callable should return either a str or a (str, dict), where the
string is the name of the next node to go to and the dict is the new,
(possibly modified) kwarg to pass into the next node. If the callable returns
None or the empty string, the current node will be revisited.</p></li>
<li><p><strong>exec</strong> (str, callable or tuple, optional): This takes the same input as <strong>goto</strong> above
and runs before it. If given a node name, the node will be executed but will not
be considered the next node. If node/callback returns str or (str, dict), these will
replace the <strong>goto</strong> step (<strong>goto</strong> callbacks will not fire), with the string being the
next node name and the optional dict acting as the kwargs-input for the next node.
If an exec callable returns the empty string (only), the current node is re-run.</p></li>
</ul>
</li>
</ul>
<p>If <strong>key</strong> is not given, the option will automatically be identified by
its number 1..N.</p>
<p>Example:</p>
<divclass="highlight-default notranslate"><divclass="highlight"><pre><span></span><spanclass="c1"># in menu_module.py</span>
<spanclass="p">{</span><spanclass="s2">"desc"</span><spanclass="p">:</span><spanclass="s2">"Go to node 3."</span><spanclass="p">,</span>
<emclass="property">exception </em><codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">EvMenuError</code><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenuError"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuError"title="Permalink to this definition">¶</a></dt>
<emclass="property">exception </em><codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">EvMenuGotoAbortMessage</code><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenuGotoAbortMessage"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuGotoAbortMessage"title="Permalink to this definition">¶</a></dt>
<emclass="property">class </em><codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">CmdEvMenuNode</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="o">**</span><spanclass="n">kwargs</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#CmdEvMenuNode"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">key</code><emclass="property"> = '__noinput_command'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.key"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">aliases</code><emclass="property"> = ['__nomatch_command']</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.aliases"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">locks</code><emclass="property"> = 'cmd:all()'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.locks"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">help_category</code><emclass="property"> = 'menu'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.help_category"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">auto_help_display_key</code><emclass="property"> = '<menu commands>'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.auto_help_display_key"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">get_help</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#CmdEvMenuNode.get_help"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.get_help"title="Permalink to this definition">¶</a></dt>
<dd><p>Return the help message for this command and this caller.</p>
<p>By default, return self.__doc__ (the docstring just under
the class definition). You can override this behavior,
though, and even customize it depending on the caller, or other
commands the caller can use.</p>
<dlclass="field-list simple">
<dtclass="field-odd">Parameters</dt>
<ddclass="field-odd"><ulclass="simple">
<li><p><strong>caller</strong> (<em>Object</em><em> or </em><em>Account</em>) – the caller asking for help on the command.</p></li>
<li><p><strong>cmdset</strong> (<aclass="reference internal"href="evennia.commands.cmdset.html#evennia.commands.cmdset.CmdSet"title="evennia.commands.cmdset.CmdSet"><em>CmdSet</em></a>) – the command set (if you need additional commands).</p></li>
</ul>
</dd>
<dtclass="field-even">Returns</dt>
<ddclass="field-even"><p><em>docstring (str)</em>– the help text to provide the caller for this command.</p>
<codeclass="sig-name descname">func</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#CmdEvMenuNode.func"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.func"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">lock_storage</code><emclass="property"> = 'cmd:all()'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdEvMenuNode.lock_storage"title="Permalink to this definition">¶</a></dt>
<emclass="property">class </em><codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">EvMenuCmdSet</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">cmdsetobj</span><spanclass="o">=</span><spanclass="default_value">None</span></em>, <emclass="sig-param"><spanclass="n">key</span><spanclass="o">=</span><spanclass="default_value">None</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenuCmdSet"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">key</code><emclass="property"> = 'menu_cmdset'</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.key"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">priority</code><emclass="property"> = 1</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.priority"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">mergetype</code><emclass="property"> = 'Replace'</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.mergetype"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">no_objs</code><emclass="property"> = True</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.no_objs"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">no_exits</code><emclass="property"> = True</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.no_exits"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">no_channels</code><emclass="property"> = False</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.no_channels"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">at_cmdset_creation</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenuCmdSet.at_cmdset_creation"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.at_cmdset_creation"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">path</code><emclass="property"> = 'evennia.utils.evmenu.EvMenuCmdSet'</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenuCmdSet.path"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">node_border_char</code><emclass="property"> = '_'</em><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.node_border_char"title="Permalink to this definition">¶</a></dt>
<dd><p>Initialize the menu tree and start the caller onto the first node.</p>
<dlclass="field-list simple">
<dtclass="field-odd">Parameters</dt>
<ddclass="field-odd"><ulclass="simple">
<li><p><strong>caller</strong> (<em>Object</em><em>, </em><em>Account</em><em> or </em><aclass="reference internal"href="evennia.server.session.html#evennia.server.session.Session"title="evennia.server.session.Session"><em>Session</em></a>) – The user of the menu.</p></li>
<li><p><strong>menudata</strong> (<em>str</em><em>, </em><em>module</em><em> or </em><em>dict</em>) – The full or relative path to the module
holding the menu tree data. All global functions in this module
whose name doesn’t start with ‘_ ‘ will be parsed as menu nodes.
Also the module itself is accepted as input. Finally, a dictionary
menu tree can be given directly. This must then be a mapping
<strong>{“nodekey”:callable,…}</strong> where <strong>callable</strong> must be called as
and return the data expected of a menu node. This allows for
dynamic menu creation.</p></li>
<li><p><strong>startnode</strong> (<em>str</em><em>, </em><em>optional</em>) – The starting node name in the menufile.</p></li>
<li><p><strong>cmdset_mergetype</strong> (<em>str</em><em>, </em><em>optional</em>) –‘Replace’ (default) means the menu
commands will be exclusive - no other normal commands will
be usable while the user is in the menu. ‘Union’ means the
menu commands will be integrated with the existing commands
(it will merge with <strong>merge_priority</strong>), if so, make sure that
the menu’s command names don’t collide with existing commands
in an unexpected way. Also the CMD_NOMATCH and CMD_NOINPUT will
be overloaded by the menu cmdset. Other cmdser mergetypes
has little purpose for the menu.</p></li>
<li><p><strong>cmdset_priority</strong> (<em>int</em><em>, </em><em>optional</em>) – The merge priority for the
menu command set. The default (1) is usually enough for most
types of menus.</p></li>
<li><p><strong>auto_quit</strong> (<em>bool</em><em>, </em><em>optional</em>) – Allow user to use “q”, “quit” or
“exit” to leave the menu at any point. Recommended during
development!</p></li>
<li><p><strong>auto_look</strong> (<em>bool</em><em>, </em><em>optional</em>) – Automatically make “looK” or “l” to
re-show the last node. Turning this off means you have to handle
re-showing nodes yourself, but may be useful if you need to
use “l” for some other purpose.</p></li>
<li><p><strong>auto_help</strong> (<em>bool</em><em>, </em><em>optional</em>) – Automatically make “help” or “h” show
the current help entry for the node. If turned off, eventual
help must be handled manually, but it may be useful if you
need ‘h’ for some other purpose, for example.</p></li>
<li><p><strong>cmd_on_exit</strong> (<em>callable</em><em>, </em><em>str</em><em> or </em><em>None</em><em>, </em><em>optional</em>) – When exiting the menu
(either by reaching a node with no options or by using the
in-built quit command (activated with <strong>allow_quit</strong>), this
callback function or command string will be executed.
The callback function takes two parameters, the caller then the
EvMenu object. This is called after cleanup is complete.
Set to None to not call any command.</p></li>
<li><p><strong>persistent</strong> (<em>bool</em><em>, </em><em>optional</em>) – Make the Menu persistent (i.e. it will
survive a reload. This will make the Menu cmdset persistent. Use
with caution - if your menu is buggy you may end up in a state
you can’t get out of! Also note that persistent mode requires
that all formatters, menu nodes and callables are possible to
<em>pickle</em>. When the server is reloaded, the latest node shown will be completely
re-run with the same input arguments - so be careful if you are counting
up some persistent counter or similar - the counter may be run twice if
reload happens on the node that does that. Note that if <strong>debug</strong> is True,
this setting is ignored and assumed to be False.</p></li>
<li><p><strong>startnode_input</strong> (<em>str</em><em> or </em><em>(</em><em>str</em><em>, </em><em>dict</em><em>)</em><em>, </em><em>optional</em>) – Send an input text to <strong>startnode</strong> as if
a user input text from a fictional previous node. If including the dict, this will
be passed as <strong>kwargs to that node. When the server reloads,
the latest visited node will be re-run as **node(caller, raw_string, **kwargs)</strong>.</p></li>
<li><p><strong>session</strong> (<aclass="reference internal"href="evennia.server.session.html#evennia.server.session.Session"title="evennia.server.session.Session"><em>Session</em></a><em>, </em><em>optional</em>) – This is useful when calling EvMenu from an account
in multisession mode > 2. Note that this session only really relevant
for the very first display of the first node - after that, EvMenu itself
will keep the session updated from the command input. So a persistent
menu will <em>not</em> be using this same session anymore after a reload.</p></li>
<li><p><strong>debug</strong> (<em>bool</em><em>, </em><em>optional</em>) – If set, the ‘menudebug’ command will be made available
by default in all nodes of the menu. This will print out the current state of
the menu. Deactivate for production use! When the debug flag is active, the
<strong>persistent</strong> flag is deactivated.</p></li>
<li><p><strong>**kwargs</strong>– All kwargs will become initialization variables on <strong>caller.ndb._menutree</strong>,
to be available at run.</p></li>
</ul>
</dd>
<dtclass="field-even">Raises</dt>
<ddclass="field-even"><p><aclass="reference internal"href="#evennia.utils.evmenu.EvMenuError"title="evennia.utils.evmenu.EvMenuError"><strong>EvMenuError</strong></a>– If the start/end node is not found in menu tree.</p>
<codeclass="sig-name descname">msg</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">txt</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.msg"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.msg"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">run_exec</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">nodename</span></em>, <emclass="sig-param"><spanclass="n">raw_string</span></em>, <emclass="sig-param"><spanclass="o">**</span><spanclass="n">kwargs</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.run_exec"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.run_exec"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">extract_goto_exec</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">nodename</span></em>, <emclass="sig-param"><spanclass="n">option_dict</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.extract_goto_exec"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.extract_goto_exec"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">goto</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">nodename</span></em>, <emclass="sig-param"><spanclass="n">raw_string</span></em>, <emclass="sig-param"><spanclass="o">**</span><spanclass="n">kwargs</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.goto"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.goto"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">run_exec_then_goto</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">runexec</span></em>, <emclass="sig-param"><spanclass="n">goto</span></em>, <emclass="sig-param"><spanclass="n">raw_string</span></em>, <emclass="sig-param"><spanclass="n">runexec_kwargs</span><spanclass="o">=</span><spanclass="default_value">None</span></em>, <emclass="sig-param"><spanclass="n">goto_kwargs</span><spanclass="o">=</span><spanclass="default_value">None</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.run_exec_then_goto"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.run_exec_then_goto"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">close_menu</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.close_menu"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.close_menu"title="Permalink to this definition">¶</a></dt>
<dd><p>Shutdown menu; occurs when reaching the end node or using the quit command.</p>
<codeclass="sig-name descname">print_debug_info</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">arg</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.print_debug_info"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.print_debug_info"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">parse_input</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">raw_string</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.parse_input"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.parse_input"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">display_nodetext</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.display_nodetext"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.display_nodetext"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">display_helptext</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.display_helptext"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.display_helptext"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">nodetext_formatter</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">nodetext</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.nodetext_formatter"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.nodetext_formatter"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">helptext_formatter</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">helptext</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.helptext_formatter"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.helptext_formatter"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">options_formatter</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">optionlist</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.options_formatter"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.options_formatter"title="Permalink to this definition">¶</a></dt>
<li><p><strong>optionlist</strong> (<em>list</em>) – List of (key, description) tuples for every
option related to this node.</p></li>
<li><p><strong>caller</strong> (<em>Object</em><em>, </em><em>Account</em><em> or </em><em>None</em><em>, </em><em>optional</em>) – The caller of the node.</p></li>
</ul>
</dd>
<dtclass="field-even">Returns</dt>
<ddclass="field-even"><p><em>options (str)</em>– The formatted option display.</p>
<codeclass="sig-name descname">node_formatter</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">nodetext</span></em>, <emclass="sig-param"><spanclass="n">optionstext</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#EvMenu.node_formatter"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.EvMenu.node_formatter"title="Permalink to this definition">¶</a></dt>
<li><p><strong>nodetext</strong> (<em>str</em>) – The node text as returned by <strong>self.nodetext_formatter</strong>.</p></li>
<li><p><strong>optionstext</strong> (<em>str</em>) – The options display as returned by <strong>self.options_formatter</strong>.</p></li>
<li><p><strong>caller</strong> (<em>Object</em><em>, </em><em>Account</em><em> or </em><em>None</em><em>, </em><em>optional</em>) – The caller of the node.</p></li>
</ul>
</dd>
<dtclass="field-even">Returns</dt>
<ddclass="field-even"><p><em>node (str)</em>– The formatted node to display.</p>
<codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">list_node</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">option_generator</span></em>, <emclass="sig-param"><spanclass="n">select</span><spanclass="o">=</span><spanclass="default_value">None</span></em>, <emclass="sig-param"><spanclass="n">pagesize</span><spanclass="o">=</span><spanclass="default_value">10</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#list_node"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.list_node"title="Permalink to this definition">¶</a></dt>
<dd><p>Decorator for making an EvMenu node into a multi-page list node. Will add new options,
prepending those options added in the node.</p>
<dlclass="field-list simple">
<dtclass="field-odd">Parameters</dt>
<ddclass="field-odd"><ulclass="simple">
<li><p><strong>option_generator</strong> (<em>callable</em><em> or </em><em>list</em>) – A list of strings indicating the options, or a callable
that is called as option_generator(caller) to produce such a list.</p></li>
<li><p><strong>select</strong> (<em>callable</em><em> or </em><em>str</em><em>, </em><em>optional</em>) – Node to redirect a selection to. Its <strong>**kwargs</strong> will
contain the <strong>available_choices</strong> list and <strong>selection</strong> will hold one of the elements in
that list. If a callable, it will be called as
<strong>select(caller, menuchoice, **kwargs)</strong> where menuchoice is the chosen option as a
string and <strong>available_choices</strong> is a kwarg mapping the option keys to the choices
offered by the option_generator. The callable whould return the name of the target node
to goto after this selection (or None to repeat the list-node). Note that if this is not
given, the decorated node must itself provide a way to continue from the node!</p></li>
<li><p><strong>pagesize</strong> (<em>int</em>) – How many options to show per page.</p></li>
<emclass="property">class </em><codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">CmdGetInput</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="o">**</span><spanclass="n">kwargs</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#CmdGetInput"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.CmdGetInput"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">key</code><emclass="property"> = '__nomatch_command'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdGetInput.key"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">aliases</code><emclass="property"> = ['__noinput_command']</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdGetInput.aliases"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">func</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#CmdGetInput.func"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.CmdGetInput.func"title="Permalink to this definition">¶</a></dt>
<dd><p>This is called when user enters anything.</p>
<codeclass="sig-name descname">help_category</code><emclass="property"> = 'general'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdGetInput.help_category"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">lock_storage</code><emclass="property"> = 'cmd:all();'</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdGetInput.lock_storage"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">search_index_entry</code><emclass="property"> = {'aliases': '__noinput_command', 'category': 'general', 'key': '__nomatch_command', 'tags': '', 'text': '\n Enter your data and press return.\n '}</em><aclass="headerlink"href="#evennia.utils.evmenu.CmdGetInput.search_index_entry"title="Permalink to this definition">¶</a></dt>
<emclass="property">class </em><codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">InputCmdSet</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">cmdsetobj</span><spanclass="o">=</span><spanclass="default_value">None</span></em>, <emclass="sig-param"><spanclass="n">key</span><spanclass="o">=</span><spanclass="default_value">None</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#InputCmdSet"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">key</code><emclass="property"> = 'input_cmdset'</em><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.key"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">priority</code><emclass="property"> = 1</em><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.priority"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">mergetype</code><emclass="property"> = 'Replace'</em><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.mergetype"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">no_objs</code><emclass="property"> = True</em><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.no_objs"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">no_exits</code><emclass="property"> = True</em><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.no_exits"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">no_channels</code><emclass="property"> = False</em><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.no_channels"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">at_cmdset_creation</code><spanclass="sig-paren">(</span><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#InputCmdSet.at_cmdset_creation"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.at_cmdset_creation"title="Permalink to this definition">¶</a></dt>
<codeclass="sig-name descname">path</code><emclass="property"> = 'evennia.utils.evmenu.InputCmdSet'</em><aclass="headerlink"href="#evennia.utils.evmenu.InputCmdSet.path"title="Permalink to this definition">¶</a></dt>
<dd><p>This is a helper function for easily request input from the caller.</p>
<dlclass="field-list simple">
<dtclass="field-odd">Parameters</dt>
<ddclass="field-odd"><ulclass="simple">
<li><p><strong>caller</strong> (<em>Account</em><em> or </em><em>Object</em>) – The entity being asked the question. This
should usually be an object controlled by a user.</p></li>
<li><p><strong>prompt</strong> (<em>str</em>) – This text will be shown to the user, in order to let them
know their input is needed.</p></li>
<li><p><strong>callback</strong> (<em>callable</em>) – A function that will be called
when the user enters a reply. It must take three arguments: the
<strong>caller</strong>, the <strong>prompt</strong> text and the <strong>result</strong> of the input given by
the user. If the callback doesn’t return anything or return False,
the input prompt will be cleaned up and exited. If returning True,
the prompt will remain and continue to accept input.</p></li>
<li><p><strong>session</strong> (<aclass="reference internal"href="evennia.server.session.html#evennia.server.session.Session"title="evennia.server.session.Session"><em>Session</em></a><em>, </em><em>optional</em>) – This allows to specify the
session to send the prompt to. It’s usually only needed if <strong>caller</strong>
is an Account in multisession modes greater than 2. The session is
then updated by the command and is available (for example in
callbacks) through <strong>caller.ndb.getinput._session</strong>.</p></li>
<li><p><strong>*args</strong> (<em>any</em>) – Extra arguments to pass to <strong>callback</strong>. To utilise <strong>*args</strong>
(and <strong>**kwargs</strong>), a value for the <strong>session</strong> argument must also be
provided.</p></li>
<li><p><strong>**kwargs</strong> (<em>any</em>) – Extra kwargs to pass to <strong>callback</strong>.</p></li>
</ul>
</dd>
<dtclass="field-even">Raises</dt>
<ddclass="field-even"><p><strong>RuntimeError</strong>– If the given callback is not callable.</p>
</dd>
</dl>
<pclass="rubric">Notes</p>
<p>The result value sent to the callback is raw and not processed in any
way. This means that you will get the ending line return character from
most types of client inputs. So make sure to strip that before doing a
comparison.</p>
<p>When the prompt is running, a temporary object <strong>caller.ndb._getinput</strong>
is stored; this will be removed when the prompt finishes.</p>
<p>If you need the specific Session of the caller (which may not be easy
to get if caller is an account in higher multisession modes), then it
is available in the callback through <strong>caller.ndb._getinput._session</strong>.
This is why the <strong>session</strong> is required as input.</p>
<p>It’s not recommended to ‘chain’<strong>get_input</strong> into a sequence of
questions. This will result in the caller stacking ever more instances
of InputCmdSets. While they will all be cleared on concluding the
get_input chain, EvMenu should be considered for anything beyond a
<codeclass="sig-prename descclassname">evennia.utils.evmenu.</code><codeclass="sig-name descname">parse_menu_template</code><spanclass="sig-paren">(</span><emclass="sig-param"><spanclass="n">caller</span></em>, <emclass="sig-param"><spanclass="n">menu_template</span></em>, <emclass="sig-param"><spanclass="n">goto_callables</span><spanclass="o">=</span><spanclass="default_value">None</span></em><spanclass="sig-paren">)</span><aclass="reference internal"href="../_modules/evennia/utils/evmenu.html#parse_menu_template"><spanclass="viewcode-link">[source]</span></a><aclass="headerlink"href="#evennia.utils.evmenu.parse_menu_template"title="Permalink to this definition">¶</a></dt>