xref: /dokuwiki/inc/Extension/SyntaxPlugin.php (revision 71096e46fcbfaeaa808667aba794e77fe2780169)
1e1d9dcc8SAndreas Gohr<?php
2e1d9dcc8SAndreas Gohr
3e1d9dcc8SAndreas Gohrnamespace dokuwiki\Extension;
4e1d9dcc8SAndreas Gohr
5*71096e46SAndreas Gohruse dokuwiki\Parsing\Handler;
6c8dd1b9dSAndreas Gohruse dokuwiki\Parsing\ModeRegistry;
71490c177SAndreas Gohruse dokuwiki\Parsing\ParserMode\Plugin;
8903d43feSMichael Großeuse Doku_Renderer;
9e1d9dcc8SAndreas Gohr
10e1d9dcc8SAndreas Gohr/**
11e1d9dcc8SAndreas Gohr * Syntax Plugin Prototype
12e1d9dcc8SAndreas Gohr *
13e1d9dcc8SAndreas Gohr * All DokuWiki plugins to extend the parser/rendering mechanism
14e1d9dcc8SAndreas Gohr * need to inherit from this class
15e1d9dcc8SAndreas Gohr *
16e1d9dcc8SAndreas Gohr * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
17e1d9dcc8SAndreas Gohr * @author     Andreas Gohr <andi@splitbrain.org>
18e1d9dcc8SAndreas Gohr */
191490c177SAndreas Gohrabstract class SyntaxPlugin extends Plugin
20e1d9dcc8SAndreas Gohr{
21e1d9dcc8SAndreas Gohr    protected $allowedModesSetup = false;
22e1d9dcc8SAndreas Gohr
23e1d9dcc8SAndreas Gohr    /**
24e1d9dcc8SAndreas Gohr     * Syntax Type
25e1d9dcc8SAndreas Gohr     *
26e1d9dcc8SAndreas Gohr     * Needs to return one of the mode types defined in $PARSER_MODES in Parser.php
27e1d9dcc8SAndreas Gohr     *
28e1d9dcc8SAndreas Gohr     * @return string
29e1d9dcc8SAndreas Gohr     */
30e1d9dcc8SAndreas Gohr    abstract public function getType();
31e1d9dcc8SAndreas Gohr
32e1d9dcc8SAndreas Gohr    /**
33e1d9dcc8SAndreas Gohr     * Allowed Mode Types
34e1d9dcc8SAndreas Gohr     *
35e1d9dcc8SAndreas Gohr     * Defines the mode types for other dokuwiki markup that maybe nested within the
36e1d9dcc8SAndreas Gohr     * plugin's own markup. Needs to return an array of one or more of the mode types
37e1d9dcc8SAndreas Gohr     * defined in $PARSER_MODES in Parser.php
38e1d9dcc8SAndreas Gohr     *
39e1d9dcc8SAndreas Gohr     * @return array
40e1d9dcc8SAndreas Gohr     */
41e1d9dcc8SAndreas Gohr    public function getAllowedTypes()
42e1d9dcc8SAndreas Gohr    {
431490c177SAndreas Gohr        return [];
44e1d9dcc8SAndreas Gohr    }
45e1d9dcc8SAndreas Gohr
46e1d9dcc8SAndreas Gohr    /**
47e1d9dcc8SAndreas Gohr     * Paragraph Type
48e1d9dcc8SAndreas Gohr     *
49e1d9dcc8SAndreas Gohr     * Defines how this syntax is handled regarding paragraphs. This is important
50e1d9dcc8SAndreas Gohr     * for correct XHTML nesting. Should return one of the following:
51e1d9dcc8SAndreas Gohr     *
52e1d9dcc8SAndreas Gohr     * 'normal' - The plugin can be used inside paragraphs
53e1d9dcc8SAndreas Gohr     * 'block'  - Open paragraphs need to be closed before plugin output
54e1d9dcc8SAndreas Gohr     * 'stack'  - Special case. Plugin wraps other paragraphs.
55e1d9dcc8SAndreas Gohr     *
56e1d9dcc8SAndreas Gohr     * @see Doku_Handler_Block
57e1d9dcc8SAndreas Gohr     *
58e1d9dcc8SAndreas Gohr     * @return string
59e1d9dcc8SAndreas Gohr     */
60e1d9dcc8SAndreas Gohr    public function getPType()
61e1d9dcc8SAndreas Gohr    {
62e1d9dcc8SAndreas Gohr        return 'normal';
63e1d9dcc8SAndreas Gohr    }
64e1d9dcc8SAndreas Gohr
65e1d9dcc8SAndreas Gohr    /**
66e1d9dcc8SAndreas Gohr     * Handler to prepare matched data for the rendering process
67e1d9dcc8SAndreas Gohr     *
68e1d9dcc8SAndreas Gohr     * This function can only pass data to render() via its return value - render()
69e1d9dcc8SAndreas Gohr     * may be not be run during the object's current life.
70e1d9dcc8SAndreas Gohr     *
71e1d9dcc8SAndreas Gohr     * Usually you should only need the $match param.
72e1d9dcc8SAndreas Gohr     *
73e1d9dcc8SAndreas Gohr     * @param   string $match The text matched by the patterns
74e1d9dcc8SAndreas Gohr     * @param   int $state The lexer state for the match
75e1d9dcc8SAndreas Gohr     * @param   int $pos The character position of the matched text
76*71096e46SAndreas Gohr     * @param   Handler $handler The Handler object
77e1d9dcc8SAndreas Gohr     * @return  bool|array Return an array with all data you want to use in render, false don't add an instruction
78e1d9dcc8SAndreas Gohr     */
79*71096e46SAndreas Gohr    abstract public function handle($match, $state, $pos, Handler $handler);
80e1d9dcc8SAndreas Gohr
81e1d9dcc8SAndreas Gohr    /**
82e1d9dcc8SAndreas Gohr     * Handles the actual output creation.
83e1d9dcc8SAndreas Gohr     *
84e1d9dcc8SAndreas Gohr     * The function must not assume any other of the classes methods have been run
85e1d9dcc8SAndreas Gohr     * during the object's current life. The only reliable data it receives are its
86e1d9dcc8SAndreas Gohr     * parameters.
87e1d9dcc8SAndreas Gohr     *
88e1d9dcc8SAndreas Gohr     * The function should always check for the given output format and return false
89e1d9dcc8SAndreas Gohr     * when a format isn't supported.
90e1d9dcc8SAndreas Gohr     *
91e1d9dcc8SAndreas Gohr     * $renderer contains a reference to the renderer object which is
92e1d9dcc8SAndreas Gohr     * currently handling the rendering. You need to use it for writing
93e1d9dcc8SAndreas Gohr     * the output. How this is done depends on the renderer used (specified
94e1d9dcc8SAndreas Gohr     * by $format
95e1d9dcc8SAndreas Gohr     *
96e1d9dcc8SAndreas Gohr     * The contents of the $data array depends on what the handler() function above
97e1d9dcc8SAndreas Gohr     * created
98e1d9dcc8SAndreas Gohr     *
99e1d9dcc8SAndreas Gohr     * @param string $format output format being rendered
100e1d9dcc8SAndreas Gohr     * @param Doku_Renderer $renderer the current renderer object
101e1d9dcc8SAndreas Gohr     * @param array $data data created by handler()
102e1d9dcc8SAndreas Gohr     * @return  boolean                 rendered correctly? (however, returned value is not used at the moment)
103e1d9dcc8SAndreas Gohr     */
104e1d9dcc8SAndreas Gohr    abstract public function render($format, Doku_Renderer $renderer, $data);
105e1d9dcc8SAndreas Gohr
106e1d9dcc8SAndreas Gohr    /**
107e1d9dcc8SAndreas Gohr     *  There should be no need to override this function
108e1d9dcc8SAndreas Gohr     *
109e1d9dcc8SAndreas Gohr     * @param string $mode
110e1d9dcc8SAndreas Gohr     * @return bool
111e1d9dcc8SAndreas Gohr     */
112e1d9dcc8SAndreas Gohr    public function accepts($mode)
113e1d9dcc8SAndreas Gohr    {
114e1d9dcc8SAndreas Gohr
115e1d9dcc8SAndreas Gohr        if (!$this->allowedModesSetup) {
116c8dd1b9dSAndreas Gohr            $registry = ModeRegistry::getInstance();
117c8dd1b9dSAndreas Gohr            $this->allowedModes = $registry->getModesForCategories($this->getAllowedTypes());
118e1d9dcc8SAndreas Gohr
119093fe67eSAndreas Gohr            $idx = array_search(substr(static::class, 7), (array)$this->allowedModes, true);
120e1d9dcc8SAndreas Gohr            if ($idx !== false) {
121e1d9dcc8SAndreas Gohr                unset($this->allowedModes[$idx]);
122e1d9dcc8SAndreas Gohr            }
123e1d9dcc8SAndreas Gohr            $this->allowedModesSetup = true;
124e1d9dcc8SAndreas Gohr        }
125e1d9dcc8SAndreas Gohr
126e1d9dcc8SAndreas Gohr        return parent::accepts($mode);
127e1d9dcc8SAndreas Gohr    }
128e1d9dcc8SAndreas Gohr}
129