Error message is printed at the bottom of the dialog

app/src/cc/arduino/libraries/contributions/ui/LibraryManagerUI.java

@@ -28,19 +28,19 @@
  */
 package cc.arduino.libraries.contributions.ui;
 
-import static processing.app.I18n._;
-
-import java.awt.Dialog;
-import java.awt.Frame;
-import java.util.Collection;
-
 import cc.arduino.libraries.contributions.ContributedLibrary;
 import cc.arduino.libraries.contributions.LibrariesIndexer;
+import cc.arduino.packages.contributions.ui.InstallerJDialogUncaughtExceptionHandler;
 import cc.arduino.ui.FilteredAbstractTableModel;
 import cc.arduino.ui.InstallerJDialog;
 import cc.arduino.ui.InstallerTableCell;
 import cc.arduino.utils.Progress;
 
+import java.awt.*;
+import java.util.Collection;
+
+import static processing.app.I18n._;
+
 @SuppressWarnings("serial")
 public class LibraryManagerUI extends InstallerJDialog {
 
@@ -48,7 +48,7 @@ public class LibraryManagerUI extends InstallerJDialog {
   protected FilteredAbstractTableModel createContribModel() {
     return new LibrariesIndexTableModel();
   }
-  
+
   private LibrariesIndexTableModel getContribModel() {
     return (LibrariesIndexTableModel) contribModel;
   }
@@ -125,12 +125,15 @@ public class LibraryManagerUI extends InstallerJDialog {
 
   @Override
   protected void onCancelPressed() {
-    if (installerThread != null)
+    super.onUpdatePressed();
+    if (installerThread != null) {
       installerThread.interrupt();
+    }
   }
 
   @Override
   protected void onUpdatePressed() {
+    super.onUpdatePressed();
     installerThread = new Thread(new Runnable() {
       @Override
       public void run() {
@@ -145,10 +148,12 @@ public class LibraryManagerUI extends InstallerJDialog {
         }
       }
     });
+    installerThread.setUncaughtExceptionHandler(new InstallerJDialogUncaughtExceptionHandler(this));
     installerThread.start();
   }
 
   public void onInstallPressed(final ContributedLibrary lib, final ContributedLibrary replaced) {
+    clearErrorMessage();
     installerThread = new Thread(new Runnable() {
       @Override
       public void run() {
@@ -164,10 +169,12 @@ public class LibraryManagerUI extends InstallerJDialog {
         }
       }
     });
+    installerThread.setUncaughtExceptionHandler(new InstallerJDialogUncaughtExceptionHandler(this));
     installerThread.start();
   }
 
   public void onRemovePressed(final ContributedLibrary lib) {
+    clearErrorMessage();
     installerThread = new Thread(new Runnable() {
       @Override
       public void run() {
@@ -183,6 +190,7 @@ public class LibraryManagerUI extends InstallerJDialog {
         }
       }
     });
+    installerThread.setUncaughtExceptionHandler(new InstallerJDialogUncaughtExceptionHandler(this));
     installerThread.start();
   }
 

app/src/cc/arduino/packages/contributions/ui/ContributionManagerUI.java

@@ -28,7 +28,6 @@
  */
 package cc.arduino.packages.contributions.ui;
 
-import static processing.app.I18n._;
 import cc.arduino.packages.contributions.ContributedPlatform;
 import cc.arduino.packages.contributions.ContributionInstaller;
 import cc.arduino.packages.contributions.ContributionsIndexer;
@@ -40,6 +39,8 @@ import cc.arduino.utils.Progress;
 import java.awt.*;
 import java.util.Collection;
 
+import static processing.app.I18n._;
+
 @SuppressWarnings("serial")
 public class ContributionManagerUI extends InstallerJDialog {
 
@@ -122,6 +123,7 @@ public class ContributionManagerUI extends InstallerJDialog {
 
   @Override
   public void onCancelPressed() {
+    super.onCancelPressed();
     if (installerThread != null) {
       installerThread.interrupt();
     }
@@ -129,6 +131,7 @@ public class ContributionManagerUI extends InstallerJDialog {
 
   @Override
   public void onUpdatePressed() {
+    super.onUpdatePressed();
     installerThread = new Thread(new Runnable() {
       @Override
       public void run() {
@@ -143,11 +146,12 @@ public class ContributionManagerUI extends InstallerJDialog {
         }
       }
     });
-    installerThread.setUncaughtExceptionHandler(new ContributionUncaughtExceptionHandler(this));
+    installerThread.setUncaughtExceptionHandler(new InstallerJDialogUncaughtExceptionHandler(this));
     installerThread.start();
   }
 
   public void onInstallPressed(final ContributedPlatform platformToInstall, final ContributedPlatform platformToRemove) {
+    clearErrorMessage();
     installerThread = new Thread(new Runnable() {
       @Override
       public void run() {
@@ -165,11 +169,12 @@ public class ContributionManagerUI extends InstallerJDialog {
         }
       }
     });
-    installerThread.setUncaughtExceptionHandler(new ContributionUncaughtExceptionHandler(this));
+    installerThread.setUncaughtExceptionHandler(new InstallerJDialogUncaughtExceptionHandler(this));
     installerThread.start();
   }
 
   public void onRemovePressed(final ContributedPlatform platform) {
+    clearErrorMessage();
     installerThread = new Thread(new Runnable() {
       @Override
       public void run() {
@@ -184,7 +189,7 @@ public class ContributionManagerUI extends InstallerJDialog {
         }
       }
     });
-    installerThread.setUncaughtExceptionHandler(new ContributionUncaughtExceptionHandler(this));
+    installerThread.setUncaughtExceptionHandler(new InstallerJDialogUncaughtExceptionHandler(this));
     installerThread.start();
   }
 

app/src/cc/arduino/packages/contributions/ui/ContributionUncaughtExceptionHandler.java

@@ -1,22 +0,0 @@
-package cc.arduino.packages.contributions.ui;
-
-import javax.swing.*;
-import java.awt.*;
-
-import static processing.app.I18n._;
-
-public class ContributionUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {
-
-  private final Component parent;
-
-  public ContributionUncaughtExceptionHandler(Component parent) {
-    this.parent = parent;
-  }
-
-  @Override
-  public void uncaughtException(Thread t, Throwable e) {
-    e.printStackTrace();
-    JOptionPane.showMessageDialog(parent, _(e.getMessage()), "Error", JOptionPane.ERROR_MESSAGE);
-  }
-
-}

app/src/cc/arduino/packages/contributions/ui/InstallerJDialogUncaughtExceptionHandler.java

@@ -0,0 +1,28 @@
+package cc.arduino.packages.contributions.ui;
+
+import cc.arduino.ui.InstallerJDialog;
+
+import javax.swing.*;
+
+import static processing.app.I18n._;
+
+public class InstallerJDialogUncaughtExceptionHandler implements Thread.UncaughtExceptionHandler {
+
+  private final InstallerJDialog parent;
+
+  public InstallerJDialogUncaughtExceptionHandler(InstallerJDialog parent) {
+    this.parent = parent;
+  }
+
+  @Override
+  public void uncaughtException(Thread t, final Throwable e) {
+    SwingUtilities.invokeLater(new Runnable() {
+      @Override
+      public void run() {
+        e.printStackTrace();
+      }
+    });
+    parent.setErrorMessage(_(e.getMessage().substring(e.getMessage().indexOf(":") + 2)));
+  }
+
+}

app/src/cc/arduino/ui/InstallerJDialog.java

@@ -35,14 +35,12 @@ import javax.swing.*;
 import javax.swing.border.EmptyBorder;
 import javax.swing.event.TableModelEvent;
 import javax.swing.event.TableModelListener;
-import javax.swing.table.TableCellEditor;
 import javax.swing.table.TableCellRenderer;
 import javax.swing.table.TableColumn;
 import javax.swing.table.TableColumnModel;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
-import java.awt.event.KeyEvent;
 import java.awt.event.WindowEvent;
 
 import static cc.arduino.packages.contributions.ui.ContributionIndexTableModel.DESCRIPTION_COL;
@@ -91,6 +89,7 @@ public abstract class InstallerJDialog extends JDialog {
   protected ProgressJProgressBar progressBar;
   protected Box progressBox;
   protected Box updateBox;
+  private final JLabel errorMessage;
 
   protected InstallerTableCell cellEditor;
 
@@ -170,6 +169,10 @@ public abstract class InstallerJDialog extends JDialog {
     progressBar.setString(" ");
     progressBar.setVisible(true);
 
+    errorMessage = new JLabel("");
+    errorMessage.setForeground(Color.RED);
+    errorMessage.setVisible(false);
+
     {
       JButton cancelButton = new JButton(_("Cancel"));
       cancelButton.addActionListener(new ActionListener() {
@@ -194,6 +197,8 @@ public abstract class InstallerJDialog extends JDialog {
 
       updateBox = Box.createHorizontalBox();
       updateBox.add(Box.createHorizontalGlue());
+      updateBox.add(errorMessage);
+      updateBox.add(Box.createHorizontalGlue());
       updateBox.add(updateButton);
     }
 
@@ -219,6 +224,16 @@ public abstract class InstallerJDialog extends JDialog {
     });
   }
 
+  public void setErrorMessage(String message) {
+    errorMessage.setText(message);
+    errorMessage.setVisible(true);
+  }
+
+  public void clearErrorMessage() {
+    errorMessage.setText("");
+    errorMessage.setVisible(false);
+  }
+
   public void setProgressVisible(boolean visible, String status) {
     progressBox.setVisible(visible);
 
@@ -258,14 +273,14 @@ public abstract class InstallerJDialog extends JDialog {
    * Action performed when the Cancel button is pressed.
    */
   protected void onCancelPressed() {
-    // Empty
+    clearErrorMessage();
   }
 
   /**
    * Action performed when the "Update List" button is pressed.
    */
   protected void onUpdatePressed() {
-    // Empty
+    clearErrorMessage();
   }
 
 }