WIP: cleanup, doc in CHANGELOG

CHANGELOG.md

@@ -12,7 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Deprecated (for soon-to-be removed features) 
 
-### Removed (for now removed features) 
+### Removed (for now removed features)
 
 ### Security (in case of vulnerabilities)
 
@@ -92,6 +92,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Deprecated (for soon-to-be removed features) 
 
+* Image Preview in the FileSystem. The functionality is to be replaced by real
+  thumbnails, which cover also non-image data-formats. The thumbnails resource
+  is part of the new file system API of the CaosDB Server which is currently
+  under development.
+
 ### Removed (for now removed features) 
 
 * Removed non-informative tests for webcaosdb.css

src/core/xsl/filesystem.xsl

@@ -48,6 +48,21 @@
       </xsl:choose>
     </xsl:if>
   </xsl:template>
+  <!-- Thumbnails of images (Deprecated)-->
+  <xsl:template name="entity-body-thumbnail">
+    <xsl:param name="path"/>
+    <xsl:if test="contains('.jpg.gif.png.svg',translate(substring($path, string-length($path) - 3), 'JPGIFNSV', 'jpgifnsv'))">
+      <div class="row">
+        <div class="col-sm-12">
+          <img class="entity-image-preview" style="max-width: 200px; max-height: 140px;">
+            <xsl:attribute name="src">
+              <xsl:value-of select="concat($filesystempath,$path)"/>
+            </xsl:attribute>
+          </img>
+        </div>
+      </div>
+    </xsl:if>
+  </xsl:template>
   <xsl:template match="dir" mode="filesystem-item">
     <li class="list-group-item">
       <a class="caosdb-fs-dir">
@@ -84,6 +99,9 @@
           </a>
         </div>
       </div>
+      <xsl:call-template name="entity-body-thumbnail">
+        <xsl:with-param name="path" select="substring-after($file-uri,$filesystempath)"/>
+      </xsl:call-template>
     </li>
   </xsl:template>
   <xsl:template match="/Response/dir" mode="top-level-data">