5: DesignBrowser should indicate loading of database

Task-Url: https://github.com/eyck/txviewer/issues/issue/5

com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/DesignBrowser.java

@@ -363,7 +363,7 @@ public class DesignBrowser {
 			if(db==database) return; // do nothing if old and new daabase is the same
 			((List<IWaveformDb>)input).get(0).removePropertyChangeListener(treeViewerPCL);
 		}
-		treeViewer.setInput(database.isLoaded()?Arrays.asList(new IWaveformDb[]{database}):null);
+		treeViewer.setInput(Arrays.asList(database.isLoaded()?new IWaveformDb[]{database}:new IWaveformDb[]{new LoadingWaveformDb()}));
 		Object state=this.waveformViewerPart.retrieveDesignBrowerState();
 		if(state!=null && state instanceof DBState) 
 			((DBState)state).apply();

com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/LoadingWaveformDb.java

@@ -0,0 +1,88 @@
+package com.minres.scviewer.e4.application.parts;
+
+import java.beans.PropertyChangeListener;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+import com.minres.scviewer.database.IHierNode;
+import com.minres.scviewer.database.IWaveform;
+import com.minres.scviewer.database.IWaveformDb;
+import com.minres.scviewer.database.IWaveformEvent;
+import com.minres.scviewer.database.RelationType;
+
+public class LoadingWaveformDb implements IWaveformDb {
+
+	private final String label = "Database loading..."; 
+
+	@Override
+	public void addPropertyChangeListener(PropertyChangeListener l) {
+	}
+
+	@Override
+	public void removePropertyChangeListener(PropertyChangeListener l) {
+	}
+
+	@Override
+	public String getFullName() {
+		return label;
+	}
+
+	@Override
+	public String getName() {
+		return label;
+	}
+
+	@Override
+	public void setName(String name) {
+	}
+
+	@Override
+	public void setParentName(String name) {
+	}
+
+	@Override
+	public List<IHierNode> getChildNodes() {
+		return new ArrayList<IHierNode>();
+	}
+
+	@Override
+	public int compareTo(IHierNode o) {
+		return 0;
+	}
+
+	@Override
+	public Long getMaxTime() {
+		return new Long(0);
+	}
+
+	@Override
+	public IWaveform<? extends IWaveformEvent> getStreamByName(String name) {
+		return null;
+	}
+
+	@Override
+	public List<IWaveform<?>> getAllWaves() {
+		return new ArrayList<IWaveform<?>>();
+	}
+
+	@Override
+	public List<RelationType> getAllRelationTypes() {
+		return new ArrayList<RelationType>();
+	}
+
+	@Override
+	public boolean load(File inp) throws Exception {
+		return false;
+	}
+
+	@Override
+	public boolean isLoaded() {
+		return false;
+	}
+
+	@Override
+	public void clear() {
+	}
+
+}

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

@@ -297,22 +297,21 @@ public class WaveformViewer implements IFileChangeListener, IPreferenceChangeLis
 	 */
 	protected void loadDatabase(final Map<String, String> state) {
 		fileMonitor.removeFileChangeListener(this);
-		Job job = new Job(" My Job") {
+		Job job = new Job("Database Load Job") {
 			@Override
 			protected IStatus run(IProgressMonitor monitor) {
 				// convert to SubMonitor and set total number of work units
-				SubMonitor subMonitor = SubMonitor.convert(monitor, filesToLoad.size());
-				subMonitor.setTaskName("Loading database");
+				SubMonitor subMonitor = SubMonitor.convert(monitor, filesToLoad.size()+1);
 				try {
+					subMonitor.worked(1);
 					for (File file : filesToLoad) {
-						// TimeUnit.SECONDS.sleep(2);
+						subMonitor.setTaskName("Loading "+file.getName());
 						database.load(file);
 						database.addPropertyChangeListener(waveformPane);
 						subMonitor.worked(1);
 						if (monitor.isCanceled())
 							return Status.CANCEL_STATUS;
 					}
-					// sleep a second
 				} catch (Exception e) {
 					database = null;
 					e.printStackTrace();

com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/provider/TxDbContentProvider.java

@@ -20,6 +20,7 @@ import com.google.common.base.Predicate;
 import com.google.common.collect.Collections2;
 import com.minres.scviewer.database.IHierNode;
 import com.minres.scviewer.database.IWaveform;
+import com.minres.scviewer.database.IWaveformDb;
 
 /**
  * The Class TxDbContentProvider providing the tree content of a database for the respective viewer.
@@ -79,9 +80,11 @@ public class TxDbContentProvider implements ITreeContentProvider {
 				}
 			});
 			return res.toArray();
-		}else if(inputElement instanceof List<?>)
+		}else if(inputElement instanceof List<?>){
 			return ((List<?>)inputElement).toArray();
-		else
+		}else if(inputElement instanceof IWaveformDb){
+			return new Object[]{};
+		} else
 			return null;
 	}
 

com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/provider/TxDbLabelProvider.java

@@ -23,6 +23,7 @@ import com.minres.scviewer.database.ISignal;
 import com.minres.scviewer.database.ISignalChangeMulti;
 import com.minres.scviewer.database.ITxStream;
 import com.minres.scviewer.database.IWaveformDb;
+import com.minres.scviewer.e4.application.parts.LoadingWaveformDb;
 
 /**
  * The Class TxDbLabelProvider providing the labels for the respective viewers.
@@ -33,7 +34,7 @@ public class TxDbLabelProvider implements ILabelProvider {
 	private List<ILabelProviderListener> listeners = new ArrayList<ILabelProviderListener>();
 
 	/** The wave. */
-	private Image database, stream, signal, folder, wave;
+	private Image loadinDatabase, database, stream, signal, folder, wave;
 	
 	
 	/**
@@ -41,6 +42,7 @@ public class TxDbLabelProvider implements ILabelProvider {
 	 */
 	public TxDbLabelProvider() {
 		super();
+		loadinDatabase=ResourceManager.getPluginImage("com.minres.scviewer.e4.application", "icons/database_go.png");
 		database=ResourceManager.getPluginImage("com.minres.scviewer.e4.application", "icons/database.png");
 		stream=ResourceManager.getPluginImage("com.minres.scviewer.e4.application", "icons/stream.png");
 		folder=ResourceManager.getPluginImage("com.minres.scviewer.e4.application", "icons/folder.png");
@@ -61,6 +63,7 @@ public class TxDbLabelProvider implements ILabelProvider {
 	 */
 	@Override
 	public void dispose() {
+		if(loadinDatabase!=null) database.dispose();
 		if(database!=null) database.dispose();
 		if(stream!=null) stream.dispose();
 		if(folder!=null) folder.dispose();
@@ -90,7 +93,10 @@ public class TxDbLabelProvider implements ILabelProvider {
 	@Override
 	public Image getImage(Object element) {
 		if(element instanceof IWaveformDb){
-			return database;
+			if(element instanceof LoadingWaveformDb)
+				return loadinDatabase;
+			else
+				return database;
 		}else if(element instanceof ITxStream){
 			return stream;
 		}else if(element instanceof ISignal<?>){