popsu-d7/sites/all/modules/openlayers_filters/openlayers_filters.module

<?php

  /**
   * @file
   * This file holds the main Drupal hook functions
   * and private functions for the openlayers_filters module.
   *
   * @ingroup openlayers
   */


  /**
   * Implements hook_help().
   */
  function openlayers_filters_help($path, $arg) {
    $output = '';
    switch ($path) {
      case 'admin/help#openlayers_filters':
        $output = '<p>'. t('The OpenLayers Filters module provides input filters
        to allow for inline maps.') .'</p>';
        return $output;
    }
  }


  /**
   * Implements hook_filter_info().
   */
  function openlayers_filters_filter_info() {
    $filters['openlayer']   = array(
      'title' => t('OpenLayers Filters'),
      'description' => t('Substitutes a macro text like !macro_example into an
              appropriate rendered OpenLayers map.',
        array(
          '!macro_example' => '[openlayers preset_name]',
        )),
      'process callback' => '_openlayer_filter_process',
      'tips callback' => '_openlayer_filter_tips',

    );
    return $filters;
  }

  /**
   * Maps filter process callback
   *
   * Scan text and replace [openlayer preset_name] with OpenLayer objects
   *
   */
  function _openlayer_filter_process($text, $filter) {
    $matches = array();
    preg_match_all('/\[(openlayers[^\]]*)\]/', $text, $matches);

    // Check for found
    if (is_array($matches[1]) && count($matches[1]) > 0) {
      foreach ($matches[1] as $i => $match) {
        $exploded = explode(' ', $match);

        if (count($exploded) > 1 && $preset = check_plain($exploded[1])) {
          $map = openlayers_preset_load($preset);
        }
        else {
          $map = openlayers_preset_load(
            variable_get('openlayers_default_preset', 'default'));
        }

        if (!empty($map->data) && is_array($map->data)) {
          $rendered = openlayers_render_map($map->data);
          // Replace text with rendered map preset
          $text = str_replace($matches[0][$i], $rendered, $text);
        }
      }
    }
    return $text;
  }


  /**
   * Filter tips callback
   */
  function _openlayer_filter_tips($filter, $format, $long = FALSE) {
    if ($long) {
      return t('Substitutes a macro text like !macro_example into a the
          appropriate rendered OpenLayers map. This will render a map
          preset into the body of content. If the preset name is not given,
          as in !macro_example_default, the default map preset will be shown.',
        array(
          '!macro_example' => '[openlayers preset_name]',
          '!macro_example_default' => '[openlayers]'
        )
      );
    }
    else {
      return t('Substitutes a macro text like !macro_example into a the
          appropriate rendered OpenLayers map.',
        array(
          '!macro_example' => '[openlayers preset_name]',
        )
      );
    }
  }