com.rinke.solutions.pinball.GlobalExceptionHandler.java Source code

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Here is the source code for com.rinke.solutions.pinball.GlobalExceptionHandler.java

Source

package com.rinke.solutions.pinball;

import java.util.ArrayList;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;

import com.rinke.solutions.pinball.api.LicenseException;

public class GlobalExceptionHandler {

    private static GlobalExceptionHandler instance;

    public static synchronized GlobalExceptionHandler getInstance() {
        if (instance == null)
            instance = new GlobalExceptionHandler();
        return instance;
    }

    private Display display;
    private Shell shell;
    private Exception lastException;

    public void setException(Exception e) {
        this.lastException = e;
        showError(lastException);
    }

    private String getMessage(Exception e) {
        StringBuilder sb = new StringBuilder();
        sb.append(e.getClass().getName() + ": ");
        sb.append(e.getMessage());
        sb.append("\n@   ");
        StackTraceElement ste = e.getStackTrace()[0];
        sb.append(ste.getClassName() + "." + ste.getMethodName() + "(" + ste.getFileName() + ":"
                + ste.getLineNumber() + ")");

        return sb.toString();
    }

    public void showError(Exception e) {
        display.asyncExec(new Runnable() {

            @Override
            public void run() {
                if (e instanceof LicenseException) {
                    MessageBox messageBox = new MessageBox(shell, SWT.ICON_WARNING | SWT.OK);

                    messageBox.setText("License problem");
                    messageBox.setMessage("This action requires a license. Error message was: " + e.getMessage()
                            + "\nIf you hav a license file please register your key file via menu Help/Register.");
                    messageBox.open();
                } else {
                    MultiStatus status = createMultiStatus(e.getLocalizedMessage(), e);
                    ErrorDialog errorDialog = new ErrorDialog(Display.getCurrent().getActiveShell(), "Error",
                            "Ein unerwarteter Fehler ist aufgetreten", status,
                            IStatus.OK | IStatus.INFO | IStatus.WARNING | IStatus.ERROR) {
                        protected void createButtonsForButtonBar(Composite parent) {
                            createButton(parent, IDialogConstants.ABORT_ID, IDialogConstants.ABORT_LABEL, true);
                            createButton(parent, IDialogConstants.PROCEED_ID, IDialogConstants.PROCEED_LABEL,
                                    false);
                            createDetailsButton(parent);
                        }

                        @Override
                        protected void buttonPressed(int id) {
                            super.buttonPressed(id);
                            if (id == IDialogConstants.ABORT_ID || id == IDialogConstants.PROCEED_ID) {
                                setReturnCode(id);
                                close();
                            }
                        }

                    };
                    int ret = errorDialog.open();
                    if (ret == IDialogConstants.ABORT_ID)
                        System.exit(1);
                }
                //System.out.println(ret); // cancel = 1
                lastException = null;
            }
        });
    }

    private static MultiStatus createMultiStatus(String msg, Throwable t) {

        java.util.List<Status> childStatuses = new ArrayList<>();
        StackTraceElement[] stackTraces = t.getStackTrace();

        for (StackTraceElement stackTrace : stackTraces) {
            Status status = new Status(IStatus.ERROR, "com.rinke.solutions.pinball", stackTrace.toString());
            childStatuses.add(status);
        }

        MultiStatus ms = new MultiStatus("com.rinke.solutions.pinball", IStatus.ERROR,
                childStatuses.toArray(new Status[] {}), t.toString(), t);
        return ms;
    }

    public Display getDisplay() {
        return display;
    }

    public void setDisplay(Display display) {
        this.display = display;
    }

    public Shell getShell() {
        return shell;
    }

    public void setShell(Shell shell) {
        this.shell = shell;
    }

    public Exception getLastException() {
        return lastException;
    }

    public void setLastException(Exception lastException) {
        this.lastException = lastException;
    }

}