add reload menu and toolbar item

plugins/com.minres.scviewer.e4.application/Application.e4xmi

@@ -11,7 +11,8 @@
     <children xsi:type="basic:Part" xmi:id="__VNlAIytEeWid7xO48ZBXw" elementId="com.minres.scviewer.e4.application.dialog.aboutscviewer" toBeRendered="false" visible="false" contributionURI="bundleclass://com.minres.scviewer.e4.application/com.minres.scviewer.e4.application.parts.AboutDialog" label="About SCViewer" bindingContexts="_95Pfu3NmEeWBq8z1Dv39LA"/>
     <mainMenu xmi:id="_95PfyXNmEeWBq8z1Dv39LA" elementId="menu:org.eclipse.ui.main.menu">
       <children xsi:type="menu:Menu" xmi:id="_95QGwHNmEeWBq8z1Dv39LA" elementId="com.minres.scviewer.e4.application.menu.file" label="File">
-        <children xsi:type="menu:HandledMenuItem" xmi:id="_VJG3YHgvEeWwZ-9vrAR2UQ" elementId="" label="Open Database" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/folder_database.png" mnemonics="M1+O" command="_95PfwHNmEeWBq8z1Dv39LA"/>
+        <children xsi:type="menu:HandledMenuItem" xmi:id="_igsK0BkREeudD5MqrWoETQ" elementId="" label="Open Database" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/folder_database.png" mnemonics="M1+O" command="_95PfwHNmEeWBq8z1Dv39LA"/>
+        <children xsi:type="menu:HandledMenuItem" xmi:id="_VJG3YHgvEeWwZ-9vrAR2UQ" elementId="" label="Re-load Database" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/database_refresh.png" mnemonics="M1+R" command="_srACsBkREeudD5MqrWoETQ"/>
         <children xsi:type="menu:HandledMenuItem" xmi:id="_e7MOYJedEeW09eyIbHsdvg" elementId="" label="Load active tab settings" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/folder_page.png" command="_7-AIMJebEeW09eyIbHsdvg">
           <parameters xmi:id="_4vtYgJehEeW09eyIbHsdvg" elementId="com.minres.scviewer.e4.application.parameter.30" name="com.minres.scviewer.e4.application.commandparameter.loadStore" value="load"/>
         </children>
@@ -58,7 +59,8 @@
     </mainMenu>
     <trimBars xmi:id="_95QGy3NmEeWBq8z1Dv39LA" elementId="org.eclipse.ui.main.toolbar">
       <children xsi:type="menu:ToolBar" xmi:id="_95QGzHNmEeWBq8z1Dv39LA" elementId="toolbar:org.eclipse.ui.main.toolbar">
-        <children xsi:type="menu:HandledToolItem" xmi:id="_95QGzXNmEeWBq8z1Dv39LA" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/folder_database.png" tooltip="Open new database" command="_95PfwHNmEeWBq8z1Dv39LA"/>
+        <children xsi:type="menu:HandledToolItem" xmi:id="_ZSajwBkZEeudD5MqrWoETQ" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/folder_database.png" tooltip="Open new database" command="_95PfwHNmEeWBq8z1Dv39LA"/>
+        <children xsi:type="menu:HandledToolItem" xmi:id="_95QGzXNmEeWBq8z1Dv39LA" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/database_refresh.png" tooltip="Re-load database" command="_srACsBkREeudD5MqrWoETQ"/>
         <children xsi:type="menu:HandledToolItem" xmi:id="_o9UBUJeiEeW09eyIbHsdvg" elementId="com.minres.scviewer.e4.application.handledtoolitem.loadsettings" label="Load settings" iconURI="platform:/plugin/com.minres.scviewer.e4.application/icons/folder_page.png" command="_7-AIMJebEeW09eyIbHsdvg">
           <parameters xmi:id="_tQZAEJeiEeW09eyIbHsdvg" elementId="com.minres.scviewer.e4.application.parameter.32" name="com.minres.scviewer.e4.application.commandparameter.loadStore" value="load"/>
         </children>
@@ -133,6 +135,7 @@
   <handlers xmi:id="_V4EscIuGEeWid7xO48ZBXw" elementId="com.minres.scviewer.e4.application.handler.setreleationtype" contributionURI="bundleclass://com.minres.scviewer.e4.application/com.minres.scviewer.e4.application.handlers.SetRelationTypeHandler" command="_E9lUgIt2EeWid7xO48ZBXw"/>
   <handlers xmi:id="__99WoJebEeW09eyIbHsdvg" elementId="com.minres.scviewer.e4.application.handler.loadStoreSettings" contributionURI="bundleclass://com.minres.scviewer.e4.application/com.minres.scviewer.e4.application.handlers.LoadStoreSettingsHandler" command="_7-AIMJebEeW09eyIbHsdvg"/>
   <handlers xmi:id="_x4pSEGtTEeqmlpoaaMHoiw" elementId="com.minres.scviewer.e4.application.handler.0" contributionURI="bundleclass://com.minres.scviewer.e4.application/com.minres.scviewer.e4.application.handlers.EnableHover" command="_uyeyYGtTEeqmlpoaaMHoiw"/>
+  <handlers xmi:id="_h3jU8BkWEeudD5MqrWoETQ" elementId="com.minres.scviewer.e4.application.handler.reloadCommand" contributionURI="bundleclass://com.minres.scviewer.e4.application/com.minres.scviewer.e4.application.handlers.ReloadHandler" command="_srACsBkREeudD5MqrWoETQ"/>
   <bindingTables xmi:id="_95PfvnNmEeWBq8z1Dv39LA" bindingContext="_95PfuXNmEeWBq8z1Dv39LA">
     <bindings xmi:id="_95Pfv3NmEeWBq8z1Dv39LA" elementId="com.minres.scviewer.e4.application.keybinding.quit" keySequence="M1+Q" command="_95PfvHNmEeWBq8z1Dv39LA">
       <tags>type:user</tags>
@@ -264,6 +267,7 @@
     <parameters xmi:id="_4C_asc3ZEei6rfTGo88R-w" elementId="com.minres.scviewer.e4.application.commandparameter.changevaluedisplay" name="Type" optional="false"/>
   </commands>
   <commands xmi:id="_uyeyYGtTEeqmlpoaaMHoiw" elementId="com.minres.scviewer.e4.application.command.enablehover" commandName="Enable hover" description="Enable hover window in waveform"/>
+  <commands xmi:id="_srACsBkREeudD5MqrWoETQ" elementId="com.minres.scviewer.e4.application.reload" commandName="Reload Command"/>
   <addons xmi:id="_95PfsnNmEeWBq8z1Dv39LA" elementId="org.eclipse.e4.core.commands.service" contributionURI="bundleclass://org.eclipse.e4.core.commands/org.eclipse.e4.core.commands.CommandServiceAddon"/>
   <addons xmi:id="_95Pfs3NmEeWBq8z1Dv39LA" elementId="org.eclipse.e4.ui.contexts.service" contributionURI="bundleclass://org.eclipse.e4.ui.services/org.eclipse.e4.ui.services.ContextServiceAddon"/>
   <addons xmi:id="_95PftHNmEeWBq8z1Dv39LA" elementId="org.eclipse.e4.ui.bindings.service" contributionURI="bundleclass://org.eclipse.e4.ui.bindings/org.eclipse.e4.ui.bindings.BindingServiceAddon"/>

plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/handlers/ReloadHandler.java

@@ -0,0 +1,42 @@
+/*******************************************************************************
+ * Copyright (c) 2015 MINRES Technologies GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     MINRES Technologies GmbH - initial API and implementation
+ *******************************************************************************/
+package com.minres.scviewer.e4.application.handlers;
+
+import org.eclipse.e4.core.di.annotations.CanExecute;
+import org.eclipse.e4.core.di.annotations.Execute;
+import org.eclipse.e4.ui.model.application.MApplication;
+import org.eclipse.e4.ui.model.application.ui.basic.MPart;
+import org.eclipse.e4.ui.workbench.modeling.EModelService;
+import org.eclipse.e4.ui.workbench.modeling.EPartService;
+import org.eclipse.swt.widgets.Shell;
+
+import com.minres.scviewer.e4.application.parts.WaveformViewer;
+public class ReloadHandler {
+
+	@CanExecute
+	public boolean canExecute(EPartService partService) {
+		MPart part = partService.getActivePart();
+		if(part==null) return false;
+		return (part.getObject() instanceof WaveformViewer);
+	}
+
+	@Execute
+	public void execute(Shell shell, MApplication app, EModelService modelService, 
+			EPartService partService){
+		
+		MPart part = partService.getActivePart();
+		Object obj = part.getObject();
+		if(part!=null && (obj instanceof WaveformViewer)) { 
+			((WaveformViewer)obj).reloadDatabase();
+		}
+	    
+	}
+}

plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformViewer.java

@@ -577,6 +577,10 @@ public class WaveformViewer implements IFileChangeListener, IPreferenceChangeLis
 	 * @param state the state
 	 */
 	protected void loadDatabase(final Map<String, String> state) {
+		loadDatabase(state, 1000L);
+	}
+
+	protected void loadDatabase(final Map<String, String> state, long delay) {
 		fileMonitor.removeFileChangeListener(this);
 		Job job = new Job(Messages.WaveformViewer_15) {
 			@Override
@@ -619,8 +623,9 @@ public class WaveformViewer implements IFileChangeListener, IPreferenceChangeLis
 				return result;
 			}
 		};
+		job.setName("Load Database");
 		job.setSystem(true);
-		job.schedule(1000L); // let the UI initialize so that we have a progress monitor
+		job.schedule(delay); // let the UI initialize so that we have a progress monitor
 	}
 
 	/* (non-Javadoc)
@@ -634,18 +639,23 @@ public class WaveformViewer implements IFileChangeListener, IPreferenceChangeLis
 			public void run() {
 				if (MessageDialog.openQuestion(display.getActiveShell(), Messages.WaveformViewer_17,
 						Messages.WaveformViewer_18)) {
-					Map<String, String> state = new HashMap<>();
+					reloadDatabase();
-					saveWaveformViewerState(state);
-					waveformPane.getStreamList().clear();
-					database.clear();
-					if (filesToLoad.size() > 0)
-						loadDatabase(state);
 				}
 			}
+
 		});
 		fileMonitor.removeFileChangeListener(this);
 	}
 
+	public void reloadDatabase() {
+		Map<String, String> state = new HashMap<>();
+		saveWaveformViewerState(state);
+		waveformPane.getStreamList().clear();
+		database.clear();
+		if (filesToLoad.size() > 0)
+			loadDatabase(state, 0L);
+	}
+
 	/**
 	 * Sets the part input.
 	 *