First version of wrgmap tag - I am sure that it contains still errors.

[philipp/winterrodeln/mediawiki_extensions/wrmap.git] / wrmap.body.php

diff --git a/wrmap.body.php b/wrmap.body.php
index b380e9bcc413d6afc7da5edd6d694dc341d28d02..7b1f33c6ca2afd26ea5fc527dc0fa38a8c690a65 100644 (file)
--- a/wrmap.body.php
+++ b/wrmap.body.php
@@ -3,11 +3,148 @@ require_once dirname(__FILE__) . '/../wrgeo/wrgeo.body.php'; # for the function
 
 function wrMapParserFirstCallInit() {
        global $wgParser;
+       // global $wrGoogleMaps; // is this necessary?
+       global $wgGoogleMapsKey;
+       $wrGoogleMaps = new WrGoogleMaps($wgGoogleMapsKey);
        $wgParser->setHook('wrmap', 'wrmapParserHook');
+       $wgParser->setHook('wrgmap', array($wrGoogleMaps, 'render'));
        return true;
 }
 
 
+// Tool functions
+// --------------
+
+/// List of markers - used by the functions wrMapReplaceByMarker and wrMapAfterTidy
+$wrMapMarkerList = array();
+
+
+/// Returns a marker for a text and back-replaces the text in wrReportAfterTidy
+function wrMapReplaceByMarker($text, $marker = 'wrMapMarker') {
+       $marker = $marker . mt_rand(1e5, 1e7);
+       global $wrMapMarkerList;
+       $wrMapMarkerList[$marker] = $text;
+       return $marker;
+}
+
+
+/// Replaces the markers by its contents
+function wrMapParserAfterTidy(&$parser, &$text) {
+       // find markers in $text
+       // replace markers with actual output
+       global $wrMapMarkerList;
+       foreach ($wrMapMarkerList as $marker => $html) $text = str_replace($marker, $html, $text);
+       return true;
+}
+
+
+
+// Java script
+// -----------
+
+// Global JavaScript functions
+define(WRGMAPJSFUNCTIONS, <<<JAVASCRIPT
+<script type="text/javascript">
+//<![CDATA[
+var wrSleddingIcon = new GIcon();
+/*
+wrSleddingIcon.image = "bahn.png";
+wrSleddingIcon.shadow = "bahns.png";
+wrSleddingIcon.iconSize = new GSize(17, 17);
+wrSleddingIcon.shadowSize = new GSize(23, 23);
+wrSleddingIcon.iconAnchor = new GPoint(9, 9);
+wrSleddingIcon.infoWindowAnchor = new GPoint(9, 9);
+*/
+
+
+function wrCreateMarker(latitude, longitude, name, icon) {
+       var point = new GLatLng(latitude, longitude);
+       var marker = new GMarker(point, icon);
+       GEvent.addListener(marker, "click", function() {marker.openInfoWindowHtml("<strong>" + name + "</strong>");});
+       return marker;
+}
+//]]>
+</script>
+JAVASCRIPT
+);
+
+
+/** This class was inpired by the GoogleMaps class of the GoogleMaps extension. */
+class WrGoogleMaps {
+       /// the Google API key (obtained from
+       /// http://www.google.com/apis/maps/signup.html)
+       private $apiKey = null;
+       
+       /// How many <wrgmap> tags are on the current page?
+       private $mapsCount = 0;
+       
+       /// Constructor
+       function WrGoogleMaps($apiKey) {
+               $this->apiKey = $apiKey;
+       }
+       
+       /// Renders the <wrgmap> tag
+       /// @param $content string - the content of the <wrgmap> tag
+       /// @param $args array - the array of attribute name/value pairs for the tag
+       /// @param $parser Parser - the MW Parser object for the current page
+       /// @param $localParser Parser - the parser for parsing local content
+       ///
+       /// @return string - the html for rendering the map
+       function render($content, $args, &$parser) {
+               ++$this->mapsCount;
+
+               // Query database
+               $dbr = wfGetDB(DB_SLAVE);
+               $res = $dbr->select('wrsleddingcache', array('page_title', 'position_latitude', 'position_longitude'));
+               $sleddingRoutes = array();
+               while ($sleddingRoute = $dbr->fetchRow($res)) $sleddingRoutes[] = $sleddingRoute;
+               $dbr->freeResult($res);
+               
+               // Load Google Maps Script and define functions
+               $output = '';
+               if ($this->mapsCount == 1) {
+                       $output .= '<script src="http://maps.google.com/maps?file=api&amp;v=2&amp;key=' . htmlspecialchars($this->apiKey) . '" type="text/javascript" />' . "\n";
+                       $output .= WRGMAPJSFUNCTIONS;
+               }
+                       
+               // Create <div/> element where the map is placed in
+               $mapName = 'wrgmap' . $this->mapsCount;
+               $output .= '<div id="' . $mapName . '" style="width: 700px; height: 450px; border-style:solid; border-width:medium; border-color:blue;"></div>';
+               
+               // Return output
+               $output .= '<script type="text/javascript">' . "\n//<![CDATA[\n";
+               $output .= 'if (GBrowserIsCompatible()) {' . "\n";
+               $output .= $this->addMap($mapName);
+               foreach ($sleddingRoutes as $s) {
+                       $lat = $s['position_latitude'];
+                       $lon = $s['position_longitude'];
+                       $pageTitle = $s['page_title'];
+                       if (!$lat || !$lon) continue;
+                       $output .= $this->addJsMarker($lat, $lon, $pageTitle);
+               }
+               $output .= "}\n//]]>\n</script>\n";
+               return wrMapReplaceByMarker($output);
+       }
+       
+       // returns a string that creates a map object called 'map'
+       private function addMap($mapName) {
+               return "\tmap = new GMap2(document.getElementById($mapName));\n" .
+               "\tmap.addControl(new GLargeMapControl());\n" .
+               "\tmap.addControl(new GMapTypeControl());\n" .
+               "\tmap.addControl(new GScaleControl());\n" .
+               "\tmap.setCenter(new GLatLng(47.267648, 11.404655), 10);\n" .
+               "\tmap.setMapType(G_SATELLITE_MAP);\n" .
+               "\tmap.enableScrollWheelZoom();\n";
+       }
+
+       // returns a string with a add marker javascript call
+       private function addJsMarker($latitude, $longitude, $pageTitle) {
+               return "\tmap.AddOverlay(wrCreateMarker($latitude, $longitude, \"" . htmlspecialchars(addslashes($pageTitle)) . "\", wrSleddingIcon));\n";
+       }
+       
+}
+
+
 /// Format inside <wrmap>...</wrmap> has to be like this:
 ///
 /// <wrmap>