improved exception handling

source/net/sourceforge/filebot/ui/panel/sfv/Checksum.java

@@ -20,10 +20,11 @@ public class Checksum {
 	private Long checksum = null;
 	private State state = State.PENDING;
 	private ChecksumComputationTask computationTask = null;
+	private String errorMessage = null;
 	
 	
 	public static enum State {
-		PENDING, INPROGRESS, READY;
+		PENDING, INPROGRESS, READY, ERROR;
 	}
 	
 	
@@ -67,6 +68,21 @@ public class Checksum {
 	public synchronized void setChecksum(Long checksum) {
 		this.checksum = checksum;
 		setState(State.READY);
+		
+		computationTask = null;
+	}
+	
+
+	public synchronized void setChecksumError(Exception exception) {
+		// get root cause
+		Throwable cause = exception;
+		
+		while (cause.getCause() != null)
+			cause = cause.getCause();
+		
+		errorMessage = cause.getMessage();
+		setState(State.ERROR);
+		
 		computationTask = null;
 	}
 	
@@ -83,14 +99,15 @@ public class Checksum {
 	
 
 	public Integer getProgress() {
-		switch (state) {
-			case PENDING:
-				return 0;
-			case READY:
-				return 100;
-			default:
-				return computationTask.getProgress();
-		}
+		if (state == State.INPROGRESS)
+			return computationTask.getProgress();
+		
+		return null;
+	}
+	
+
+	public String getErrorMessage() {
+		return errorMessage;
 	}
 	
 
@@ -123,6 +140,7 @@ public class Checksum {
 					setChecksum(computationTask.get());
 				}
 			} catch (Exception e) {
+				setChecksumError(e);
 				e.printStackTrace();
 			}
 		}
@@ -141,16 +159,13 @@ public class Checksum {
 
 	@Override
 	public String toString() {
-		switch (state) {
-			case PENDING:
-				return state.toString();
-			case INPROGRESS:
-				return state.toString();
-			case READY:
-				return getChecksumString();
-			default:
-				return null;
-		}
+		if (state == State.READY)
+			return getChecksumString();
+		
+		if (state == State.ERROR)
+			return getErrorMessage();
+		
+		return state.toString();
 	}
 	
 }

source/net/sourceforge/filebot/ui/panel/sfv/ChecksumRow.java

@@ -45,13 +45,15 @@ public class ChecksumRow {
 
 	public State getState() {
 		HashSet<Long> checksums = new HashSet<Long>();
-		boolean ready = true;
 		
-		for (Checksum checksum : checksumMap.values()) {
-			if (checksum.getState() == Checksum.State.READY)
+		for (Checksum checksum : getChecksums()) {
+			if (checksum.getState() == Checksum.State.READY) {
 				checksums.add(checksum.getChecksum());
-			else
-				ready = false;
+			} else if (checksum.getState() == Checksum.State.ERROR) {
+				return State.ERROR;
+			} else {
+				return State.UNKNOWN;
+			}
 		}
 		
 		if (checksums.size() > 1) {
@@ -65,10 +67,6 @@ public class ChecksumRow {
 				return State.WARNING;
 		}
 		
-		if (!ready) {
-			return State.UNKNOWN;
-		}
-		
 		return State.OK;
 	}
 	

source/net/sourceforge/filebot/ui/panel/sfv/renderer/ChecksumTableCellRenderer.java

@@ -27,6 +27,8 @@ public class ChecksumTableCellRenderer extends TextTableCellRenderer {
 			setText(checksum.getChecksumString());
 		} else if (checksum.getState() == Checksum.State.PENDING) {
 			setText("Pending ...");
+		} else if (checksum.getState() == Checksum.State.ERROR) {
+			setText(checksum.getErrorMessage());
 		} else {
 			return progressBarRenderer.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
 		}

source/net/sourceforge/filebot/ui/transferablepolicies/FileTransferablePolicy.java

@@ -10,6 +10,7 @@ import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 
@@ -31,10 +32,12 @@ public abstract class FileTransferablePolicy extends TransferablePolicy {
 	protected List<File> getFilesFromTransferable(Transferable tr) {
 		List<File> files = getFilesFromFileTransferable(tr);
 		
-		// if there is no file transferable, look if there is a string transferable
+		// if there is no file transferable, look if there is a string transferable that contains file uris
 		if (files == null)
 			files = getFilesFromStringTransferable(tr);
 		
+		Collections.sort(files);
+		
 		return files;
 	}