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<?php
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/**
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* @file
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*
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* Sample plugin to provide an argument handler for a simplecontext.
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*
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* Given any argument to the page, simplecontext will get it
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* and turn it into a piece of data (a "context") just by adding some text to it.
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* Normally, the argument would be a key into some database (like the node
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* database, for example, and the result of using the argument would be to load
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* a specific "context" or data item that we can use elsewhere.
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*/
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/**
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* Plugins are described by creating a $plugin array which will be used
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* by the system that includes this file.
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*/
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$plugin = array(
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'title' => t("Simplecontext arg"),
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// keyword to use for %substitution
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'keyword' => 'simplecontext',
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'description' => t('Creates a "simplecontext" from the arg.'),
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'context' => 'simplecontext_arg_context',
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// 'settings form' => 'simplecontext_arg_settings_form',
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// placeholder_form is used in panels preview, for example, so we can
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// preview without getting the arg from a URL
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'placeholder form' => array(
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'#type' => 'textfield',
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'#description' => t('Enter the simplecontext arg'),
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),
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);
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/**
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* Get the simplecontext context using the arg. In this case we're just going
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* to manufacture the context from the data in the arg, but normally it would
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* be an API call, db lookup, etc.
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*/
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function simplecontext_arg_context($arg = NULL, $conf = NULL, $empty = FALSE) {
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// If $empty == TRUE it wants a generic, unfilled context.
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if ($empty) {
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return ctools_context_create_empty('simplecontext');
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}
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// Do whatever error checking is required, returning FALSE if it fails the test
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// Normally you'd check
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// for a missing object, one you couldn't create, etc.
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if (empty($arg)) {
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return FALSE;
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}
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return ctools_context_create('simplecontext', $arg);
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}
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