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package eu.etaxonomy.taxeditor;
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import java.io.OptionalDataException;
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import org.apache.http.NoHttpResponseException;
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import org.eclipse.core.runtime.IStatus;
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import org.eclipse.ui.application.IWorkbenchConfigurer;
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import org.eclipse.ui.application.IWorkbenchWindowConfigurer;
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import org.eclipse.ui.application.WorkbenchAdvisor;
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import org.eclipse.ui.application.WorkbenchWindowAdvisor;
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import org.eclipse.ui.statushandlers.AbstractStatusHandler;
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import org.eclipse.ui.statushandlers.StatusAdapter;
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import org.springframework.remoting.RemoteAccessException;
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import org.springframework.remoting.RemoteConnectFailureException;
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import eu.etaxonomy.cdm.database.PermissionDeniedException;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
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import eu.etaxonomy.taxeditor.store.CdmAuthenticationException;
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/**
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* <p>ApplicationWorkbenchAdvisor class.</p>
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*
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* @author n.hoffmann
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*/
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public class ApplicationWorkbenchAdvisor extends WorkbenchAdvisor {
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private CdmStatusHandler cdmStatusHandler;
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@Override
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public WorkbenchWindowAdvisor createWorkbenchWindowAdvisor(
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IWorkbenchWindowConfigurer configurer) {
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return new ApplicationWorkbenchWindowAdvisor(configurer);
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}
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@Override
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public String getInitialWindowPerspectiveId() {
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// if (PreferencesUtil.getBooleanValue(IPreferenceKeys.SHOW_CHECKLIST_PERSPECTIVE)){
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// return "eu.etaxonomy.taxeditor.perspective.checklistperspective";
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// }
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return "eu.etaxonomy.taxeditor.application.perspective.taxonomic";
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}
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@Override
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public void initialize(IWorkbenchConfigurer configurer) {
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super.initialize(configurer);
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// Remembers the user's view layout, window size, window location etc.
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// for the next time application is started
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configurer.setSaveAndRestore(true);
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}
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@Override
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public synchronized AbstractStatusHandler getWorkbenchErrorHandler() {
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if (cdmStatusHandler == null) {
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cdmStatusHandler = new CdmStatusHandler();
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}
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return cdmStatusHandler;
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}
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/**
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* Custom status handler for handling scenarios which are
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* not handled by the editor (e.g. runtime exceptions).
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*
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* The default {@link org.eclipse.ui.statushandlers.WorkbenchErrorHandler}
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* is not used or extended because we need a handler for specific scenarios
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* which displays a custom built error dialog.
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*
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* @author cmathew
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*/
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class CdmStatusHandler extends AbstractStatusHandler {
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private Throwable previousT;
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@Override
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public void handle(StatusAdapter statusAdapter, int style){
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if(statusAdapter.getStatus().matches(IStatus.ERROR)) {
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Throwable t = statusAdapter.getStatus().getException();
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if (t != null){
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// NOTE : the global status handling mechanism in the case of
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// runtime exceptions is called twice, once by the application
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// throwing the exception and then by the rcp logging mechanism.
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// The check below is to make sure that the same exception is
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// not shown twice in succession.
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if(previousT == t) {
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return;
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}
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previousT = t;
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if (t.getCause() instanceof PermissionDeniedException){
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MessagingUtils.informationDialog("Permission denied", MessagingUtils.PERMISSION_DENIED);
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}
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else if (t instanceof NoHttpResponseException
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|| t.getCause() instanceof CdmAuthenticationException
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|| (t.getMessage() != null && t.getMessage().contains("status code = 403"))){
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t.printStackTrace();
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MessagingUtils.informationDialog("Access denied", MessagingUtils.ACCESS_DENIED);
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}else if (includesCause(t, OptionalDataException.class)){
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MessagingUtils.informationDialog("Error (OptionalDataException)",
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MessagingUtils.RESTART_EDITOR_MESSAGE
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);
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}else
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// NOTE : Currently we only allow RuntimeExceptions since
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// allowing all kinds of exceptions would also include
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// those in generated status objects coming from from logging triggers
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// leading to a recursive infinite loop of :
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// initial exception thrown -> status handling -> dialog opening + logging of status ->
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// status handling -> dialog opening + logging of status ... and so on
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if(t instanceof RuntimeException &&
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! "Widget is disposed".equals(t.getMessage()) &&
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! handleKnownRuntimeException(t,statusAdapter.getStatus().getPlugin())) {
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MessagingUtils.errorDialog("Error",
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null,
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MessagingUtils.UNEXPECTED_ERROR_MESSAGE,
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statusAdapter.getStatus().getPlugin(),
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t,
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true);
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} else if (("Widget is disposed".equals(t.getMessage()))){
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MessagingUtils.warn(this.getClass(), t);
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if (PreferencesUtil.isShowUpWidgetIsDisposedMessages()){
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MessagingUtils.errorDialog("Widget is disposed",
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null,
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MessagingUtils.WIDGET_IS_DISPOSED_MESSAGE,
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statusAdapter.getStatus().getPlugin(),
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t,
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true);
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}
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}
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}
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}
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}
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/**
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* Analyzes whether the throwable includes an exception of type clazz
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* in the stacktrace.
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*/
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private <T extends Exception> boolean includesCause(Throwable t, Class<? extends Throwable> clazz) {
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boolean result = false;
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if (clazz.isAssignableFrom(t.getClass()) ){
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return true;
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}else if (t.getCause() != null && t.getCause() != t){
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return includesCause(t.getCause(), clazz);
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}
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return result;
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}
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private boolean handleKnownRuntimeException(Throwable t, String pluginId) {
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if(t instanceof RemoteConnectFailureException ||
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t.getCause() instanceof RemoteConnectFailureException) {
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MessagingUtils.errorDialog("Connection Failure",
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null,
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MessagingUtils.CONNECTION_FAILURE_MESSAGE + System.getProperty("line.separator"),
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pluginId,
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t,
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true,
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false);
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return true;
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}
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if(t instanceof RemoteAccessException ||
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t.getCause() instanceof RemoteAccessException ) {
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MessagingUtils.errorDialog("Remote Access Error",
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null,
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MessagingUtils.REMOTE_ACCESS_FAILURE_MESSAGE + System.getProperty("line.separator"),
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pluginId,
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t,
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false,
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true);
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return true;
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}
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if (t instanceof CdmAuthenticationException){
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MessagingUtils.info("You are logged in now but you are not permitted to use the TaxEditor with the selected data source");
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}
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return false;
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}
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}
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}
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