Cosmetics.

Change-Id: Ifea81e9b9736810150c4fb3d17723e6702d76833
diff --git a/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java b/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java
index 5c39790..7c12041 100644
--- a/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java
+++ b/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java
@@ -558,7 +558,7 @@
 			fLeg = leg;
 			if (fElement instanceof IEncodedStreamContentAccessor) {
 				try {
-					fEncoding = ((IEncodedStreamContentAccessor)fElement).getCharset();
+					fEncoding = ((IEncodedStreamContentAccessor) fElement).getCharset();
 				} catch (CoreException e) {
 					// silently ignored
 				}
@@ -677,8 +677,8 @@
 			Position range= null;
 
 			if (fElement instanceof IDocumentRange) {
-				newDocument= ((IDocumentRange)fElement).getDocument();
-				range= ((IDocumentRange)fElement).getRange();
+				newDocument= ((IDocumentRange) fElement).getDocument();
+				range= ((IDocumentRange) fElement).getRange();
 				connectToSharedDocument();
 
 			} else if (fElement instanceof IDocument) {
@@ -700,14 +700,14 @@
 				ITypedElement parent= this.fViewer.getParent(fLeg);	// we try to find an insertion position within the deletion's parent
 
 				if (parent instanceof IDocumentRange) {
-					newDocument= ((IDocumentRange)parent).getDocument();
+					newDocument= ((IDocumentRange) parent).getDocument();
 					newDocument.addPositionCategory(DIFF_RANGE_CATEGORY);
 					Object input= this.fViewer.getInput();
 					range= this.fViewer.getNewRange(fLeg, input);
 					if (range == null) {
 						int pos= 0;
 						if (input instanceof ICompareInput)
-							pos= this.fViewer.findInsertionPosition(fLeg, (ICompareInput)input);
+							pos= this.fViewer.findInsertionPosition(fLeg, (ICompareInput) input);
 						range= new Position(pos, 0);
 						try {
 							newDocument.addPosition(DIFF_RANGE_CATEGORY, range);
@@ -721,7 +721,7 @@
 						this.fViewer.addNewRange(fLeg, input, range);
 					}
 				} else if (parent instanceof IDocument) {
-					newDocument= ((IDocumentRange)fElement).getDocument();
+					newDocument= ((IDocumentRange) fElement).getDocument();
 				}
 			}
 
@@ -1113,7 +1113,7 @@
 			if (fElement == null)
 				return true;
 			if (fDocumentProvider instanceof IDocumentProviderExtension) {
-				IDocumentProviderExtension ext = (IDocumentProviderExtension)fDocumentProvider;
+				IDocumentProviderExtension ext = (IDocumentProviderExtension) fDocumentProvider;
 				if (ext.isReadOnly(fDocumentKey)) {
 					try {
 						ext.validateState(fDocumentKey, getControl().getShell());
@@ -1543,7 +1543,7 @@
 			}
 			@Override
 			public boolean isHunkOnLeft() {
-				ITypedElement left = ((ICompareInput)getInput()).getRight();
+				ITypedElement left = ((ICompareInput) getInput()).getRight();
 				return left != null && Adapters.adapt(left, IHunk.class) != null;
 			}
 			@Override
@@ -1851,7 +1851,7 @@
 		// to get undo for all text files, bugzilla 131895, 33665
 		if(textViewer instanceof ISourceViewer){
 			SourceViewerConfiguration configuration= new SourceViewerConfiguration();
-			((ISourceViewer)textViewer).configure(configuration);
+			((ISourceViewer) textViewer).configure(configuration);
 		}
 	}
 
@@ -2160,7 +2160,7 @@
 			new Listener() {
 				@Override
 				public void handleEvent(Event e) {
-					int vpos= ((ScrollBar)e.widget).getSelection();
+					int vpos= ((ScrollBar) e.widget).getSelection();
 					synchronizedScrollVertical(vpos);
 				}
 			}
@@ -2883,7 +2883,7 @@
 			return doc;
 
 		if (input instanceof IDiffElement) {
-			IDiffContainer parent= ((IDiffElement)input).getParent();
+			IDiffContainer parent= ((IDiffElement) input).getParent();
 			return getElementDocument(type, parent);
 		}
 		return null;
@@ -2939,7 +2939,7 @@
 	private ITypedElement getParent(char type) {
 		Object input= getInput();
 		if (input instanceof IDiffElement) {
-			IDiffContainer parent= ((IDiffElement)input).getParent();
+			IDiffContainer parent= ((IDiffElement) input).getParent();
 			return Utilities.getLeg(type, parent);
 		}
 		return null;
@@ -2963,22 +2963,21 @@
 		// if one side is empty use container
 		if (FIX_47640 && !emptyInput && (left == null || right == null)) {
 			if (input instanceof IDiffElement) {
-				IDiffContainer parent= ((IDiffElement)input).getParent();
+				IDiffContainer parent= ((IDiffElement) input).getParent();
 				if (parent instanceof ICompareInput) {
 				    ICompareInput ci= (ICompareInput) parent;
 
 				    if (ci.getAncestor() instanceof IDocumentRange
-				            || ci.getLeft() instanceof IDocumentRange
-				            		|| ci.getRight() instanceof IDocumentRange) {
+				    		|| ci.getLeft() instanceof IDocumentRange
+				    		|| ci.getRight() instanceof IDocumentRange) {
+				    	if (left instanceof IDocumentRange)
+				    		leftRange= ((IDocumentRange) left).getRange();
+				    	if (right instanceof IDocumentRange)
+				    		rightRange= ((IDocumentRange) right).getRange();
 
-				        	if (left instanceof IDocumentRange)
-				        	    leftRange= ((IDocumentRange)left).getRange();
-				        	if (right instanceof IDocumentRange)
-				        	    rightRange= ((IDocumentRange)right).getRange();
-
-					    ancestor= ci.getAncestor();
-					    left= getCompareConfiguration().isMirrored() ? ci.getRight() : ci.getLeft();
-					    right= getCompareConfiguration().isMirrored() ? ci.getLeft() : ci.getRight();
+				    	ancestor= ci.getAncestor();
+				    	left= getCompareConfiguration().isMirrored() ? ci.getRight() : ci.getLeft();
+				    	right= getCompareConfiguration().isMirrored() ? ci.getLeft() : ci.getRight();
 				    }
 				}
 			}
@@ -5169,7 +5168,7 @@
 
 		Control center= getCenterControl();
 		if (center instanceof BufferedCanvas)
-			((BufferedCanvas)center).repaint();
+			((BufferedCanvas) center).repaint();
 
 		if (fRightCanvas != null)
 			fRightCanvas.repaint();
@@ -5425,13 +5424,13 @@
 			if (right != null) {
 				Object element = Adapters.adapt(right, IHunk.class);
 				if (element instanceof IHunk)
-					return ((IHunk)element).getStartPosition();
+					return ((IHunk) element).getStartPosition();
 			}
 			ITypedElement left = ((DiffNode) input).getLeft();
 			if (left != null) {
 				Object element = Adapters.adapt(left, IHunk.class);
 				if (element instanceof IHunk)
-					return ((IHunk)element).getStartPosition();
+					return ((IHunk) element).getStartPosition();
 			}
 		}
 		return 0;
diff --git a/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ImageMergeViewer.java b/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ImageMergeViewer.java
index 9ee4117..829c1f3 100644
--- a/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ImageMergeViewer.java
+++ b/bundles/org.eclipse.compare/compare/org/eclipse/compare/internal/ImageMergeViewer.java
@@ -28,7 +28,6 @@
 /**
  */
 public class ImageMergeViewer extends ContentMergeViewer {
-
 	private static final String BUNDLE_NAME= "org.eclipse.compare.internal.ImageMergeViewerResources"; //$NON-NLS-1$
 
 	private Object fLeftImage;
@@ -38,7 +37,6 @@
 	private ImageCanvas fLeft;
 	private ImageCanvas fRight;
 
-
 	public ImageMergeViewer(Composite parent, int styles, CompareConfiguration mp) {
 		super(styles, ResourceBundle.getBundle(BUNDLE_NAME), mp);
 
@@ -51,7 +49,6 @@
 
 	@Override
 	protected void updateContent(Object ancestor, Object left, Object right) {
-
 		setInput(fAncestor, ancestor);
 
 		fLeftImage= left;
@@ -78,41 +75,42 @@
 
 	private static void setInput(ImageCanvas canvas, Object input) {
 		if (canvas != null) {
-
 			InputStream stream= null;
-			if (input instanceof IStreamContentAccessor) {
-				IStreamContentAccessor sca= (IStreamContentAccessor) input;
-				if (sca != null) {
-					try {
-						stream= sca.getContents();
-					} catch (CoreException ex) {
-						// NeedWork
+			try {
+				if (input instanceof IStreamContentAccessor) {
+					IStreamContentAccessor sca= (IStreamContentAccessor) input;
+					if (sca != null) {
+						try {
+							stream= sca.getContents();
+						} catch (CoreException e) {
+							// NeedWork
+						}
 					}
 				}
-			}
 
-			Image image= null;
-			Display display= canvas.getDisplay();
-			if (stream != null) {
-				try {
-					image= new Image(display, stream);
-				} catch (SWTException ex) {
-					// silently ignored
+				Image image= null;
+				Display display= canvas.getDisplay();
+				if (stream != null) {
+					try {
+						image= new Image(display, stream);
+					} catch (SWTException e) {
+						// silently ignored
+					}
 				}
-			}
 
-			canvas.setImage(image);
-			if (image != null) {
-				canvas.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND));
-			} else {
-				canvas.setBackground(null);
-			}
-
-			if (stream != null) {
-				try {
-					stream.close();
-				} catch (IOException ex) {
-					// silently ignored
+				canvas.setImage(image);
+				if (image != null) {
+					canvas.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND));
+				} else {
+					canvas.setBackground(null);
+				}
+			} finally {
+				if (stream != null) {
+					try {
+						stream.close();
+					} catch (IOException e) {
+						// silently ignored
+					}
 				}
 			}
 		}
@@ -131,7 +129,7 @@
 	@Override
 	protected void handleResizeLeftRight(int x, int y, int width1, int centerWidth, int width2, int height) {
 		fLeft.setBounds(x, y, width1, height);
-		fRight.setBounds(x+width1+centerWidth, y, width2, height);
+		fRight.setBounds(x + width1 + centerWidth, y, width2, height);
 	}
 
 	@Override
@@ -147,4 +145,3 @@
 		}
 	}
 }
-