new clientside image-name to url map: egw.image(_name, _app="phpgwapi")

eg. egw.image('favicon') returns '/egroupware/phpgwapi/templates/default/favicon.ico'
--> pondon to serverside common::image($app,$name) method

phpgwapi/images.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * API: loading available images by application and image-name (without extension)
+ *
+ * Usage: /egroupware/phpgwapi/images.php?template=idots
+ *
+ * @link www.egroupware.org
+ * @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @package phpgwapi
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @version $Id$
+ */
+
+$GLOBALS['egw_info'] = array(
+	'flags' => array(
+		'currentapp' => 'home',
+		'noheader' => true,
+		'nocachecontrol' => true,
+	)
+);
+
+include '../header.inc.php';
+
+$image_map = common::image_map(preg_match('/^[a-z0-9_-]+$/i',$_GET['template']) ? $_GET['template'] : null);
+
+// use an etag over the image mapp
+$etag = '"'.md5(serialize($image_map)).'"';
+
+// headers to allow caching
+Header('Content-Type: text/javascript; charset=utf-8');
+Header('Cache-Control: public, no-transform');
+Header('Pragma: cache');
+Header('ETag: '.$etag);
+
+// if servers send a If-None-Match header, response with 304 Not Modified, if etag matches
+if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] == $etag)
+{
+	header("HTTP/1.1 304 Not Modified");
+	common::egw_exit();
+}
+
+echo 'egw.set_images('.json_encode($image_map).");\n";
+
+// Content-Lenght header is important, otherwise browsers dont cache!
+Header('Content-Length: '.ob_get_length());

phpgwapi/inc/class.egw_framework.inc.php

@@ -768,6 +768,7 @@ abstract class egw_framework
 		if ($GLOBALS['egw_info']['flags']['js_link_registry'])
 		{
 			self::validate_file('/phpgwapi/config.php');
+			self::validate_file('/phpgwapi/images.php',array('template' => $GLOBALS['egw_info']['user']['preferences']['common']['template_set']));
 		}
 		$java_script .= self::get_script_links();
 

phpgwapi/js/jsapi/egw.js

@@ -308,6 +308,49 @@ else
 		set_configs: function(_configs)
 		{
 			this.configs = _configs;
+		},
+		
+		/**
+		 * Map to serverside available images for users template-set
+		 */
+		images: {},
+		
+		/**
+		 * Set imagemap, called from /phpgwapi/images.php
+		 * 
+		 * @param array/object _images
+		 */
+		set_images: function (_images)
+		{
+			this.images = _images;
+		},
+		
+		/**
+		 * Get image URL for a given image-name and application
+		 * 
+		 * @param string _name image-name without extension
+		 * @param string _app application name, default phpgwapi
+		 * @return string with URL of image
+		 */
+		image: function (_name, _app)
+		{
+			if (typeof _app == 'undefined') _app = 'phpgwapi';
+			
+			// own instance specific images in vfs have highest precedence
+			if (typeof this.images['vfs'] != 'undefined' && typeof this.images['vfs'][_name] != 'undefined')
+			{
+				return this.webserverUrl+this.images['vfs'][_name];
+			}
+			if (typeof this.images[_app] != 'undefined' && typeof this.images[_app][_name] != 'undefined')
+			{
+				return this.webserverUrl+this.images[_app][_name];
+			}
+			if (typeof this.images['phpgwapi'] != 'undefined' && typeof this.images['phpgwapi'][_name] != 'undefined')
+			{
+				return this.webserverUrl+this.images['vfs'][_name];
+			}
+			console.log('egw.image("'+_name+'", "'+_app+'") image NOT found!');
+			return null;
 		}
 	};
 }

phpgwapi/templates/idots/class.idots_framework.inc.php

@@ -164,6 +164,7 @@ class idots_framework extends egw_framework
 		if (!isset($GLOBALS['egw_info']['flags']['js_link_registry']))
 		{
 			self::validate_file('/phpgwapi/config.php');
+			self::validate_file('/phpgwapi/images.php',array('template' => $GLOBALS['egw_info']['user']['preferences']['common']['template_set']));
 			$content .= '<script type="text/javascript">
 egw.set_preferences('.json_encode($GLOBALS['egw_info']['user']['preferences']['common']).', "common");
 </script>'."\n";