added mdsrv datasource

.gitignore

@@ -5,3 +5,5 @@ build/
 node_modules/
 
 npm-debug.log
+
+*.offsets

examples/webapp.html

@@ -26,32 +26,46 @@
   <script src="js/plugins.js"></script>
 
   <script>
-    NGL.cssDirectory = "css/";
-    NGL.documentationUrl = "../build/docs/";
-    NGL.examplesListUrl = "../build/scriptsList.json";
-    NGL.examplesScriptUrl = "./scripts/";
+    NGL.cssDirectory = "css/"
+    NGL.documentationUrl = "../build/docs/"
+    NGL.examplesListUrl = "../build/scriptsList.json"
+    NGL.examplesScriptUrl = "./scripts/"
 
     // Datasources
-    NGL.DatasourceRegistry.add(
-      "data", new NGL.StaticDatasource("../data/")
-    );
+    NGL.DatasourceRegistry.add( "data", new NGL.StaticDatasource("../data/"))
+    var mdsrv = NGL.getQuery("mdsrv")
+    if (mdsrv) {
+      NGL.DatasourceRegistry.add( "file", new NGL.MdsrvDatasource(mdsrv))
+      NGL.DatasourceRegistry.listing = NGL.DatasourceRegistry.get("file")
+      NGL.DatasourceRegistry.trajectory = NGL.DatasourceRegistry.get("file")
+    }
 
     // Plugins
-    NGL.PluginRegistry.add(
-      "apbs", "plugins/apbs.plugin"
-    );
+    NGL.PluginRegistry.add("apbs", "plugins/apbs.plugin")
 
-    var stage;
+    var stage
     document.addEventListener("DOMContentLoaded", function () {
-      stage = new NGL.Stage();
-      NGL.StageWidget(stage);
-      var load = NGL.getQuery("load");
-      if (load) stage.loadFile(load, {defaultRepresentation: true});
-      var script = NGL.getQuery("script");
-      if (script) stage.loadFile("./scripts/" + script + ".js");
-      var plugin = NGL.getQuery("plugin");
-      if (plugin) NGL.PluginRegistry.load(plugin, stage);
-    });
+      stage = new NGL.Stage()
+      NGL.StageWidget(stage)
+
+      var load = NGL.getQuery("load")
+      if (load) stage.loadFile(load, {defaultRepresentation: true})
+
+      var script = NGL.getQuery("script")
+      if (script) stage.loadFile("./scripts/" + script + ".js")
+      var plugin = NGL.getQuery("plugin")
+      if (plugin) NGL.PluginRegistry.load(plugin, stage)
+
+      var struc = NGL.getQuery( "struc" )
+      var traj = NGL.getQuery( "traj" )
+      if (struc) {
+        stage.loadFile(struc, {
+          defaultRepresentation: true
+        }).then( function(o) {
+          if (traj) o.addTrajectory(traj)
+        })
+      }
+    })
   </script>
 </body>
 </html>

src/datasource/mdsrv-datasource.js

@@ -0,0 +1,56 @@
+/**
+ * @file MDsrv Datasource
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ * @private
+ */
+
+import { getFileInfo } from '../utils.js'
+import { autoLoad } from '../loader/loader-utils.js'
+import Datasource from './datasource.js'
+
+class MdsrvDatasource extends Datasource {
+  constructor (baseUrl) {
+    super()
+    this.baseUrl = baseUrl || ''
+  }
+
+  getListing (path) {
+    path = path || ''
+    let url = this.baseUrl + 'dir/' + path
+    if (url[url.length - 1] !== '/') url += '/'
+    return autoLoad(url, {
+      ext: 'json'
+    }).then(function (jsonData) {
+      return {
+        path: path,
+        data: jsonData.data
+      }
+    })
+  }
+
+  getUrl (src) {
+    const info = getFileInfo(src)
+    return this.baseUrl + 'file/' + info.path
+  }
+
+  getNumframesUrl (src) {
+    const info = getFileInfo(src)
+    return this.baseUrl + 'traj/numframes/' + info.path
+  }
+
+  getFrameUrl (src, frameIndex) {
+    const info = getFileInfo(src)
+    return this.baseUrl + 'traj/frame/' + frameIndex + '/' + info.path
+  }
+
+  getFrameParams (src, atomIndices) {
+    return 'atomIndices=' + atomIndices.join(';')
+  }
+
+  getPathUrl (src, atomIndex) {
+    const info = getFileInfo(src)
+    return this.baseUrl + 'traj/path/' + atomIndex + '/' + info.path
+  }
+}
+
+export default MdsrvDatasource

src/ngl.js

@@ -160,6 +160,7 @@ import './datasource/rcsb-datasource.js'
 import './datasource/pubchem-datasource.js'
 import './datasource/passthrough-datasource.js'
 import StaticDatasource from './datasource/static-datasource.js'
+import MdsrvDatasource from './datasource/mdsrv-datasource.js'
 
 //
 
@@ -189,6 +190,7 @@ export {
   setDebug,
   DatasourceRegistry,
   StaticDatasource,
+  MdsrvDatasource,
   ParserRegistry,
   autoLoad,
   RepresentationRegistry,