I wanted to change font for a text field from Window->prefernce->change font option. I implemented the code.
But what happens is while updating the text field I am getting following classcast exception. Following is the code for adding the font dialog in Preference
public class SampleViewPreferencePage extends FieldEditorPreferencePage implements
IWorkbenchPreferencePage {
public SampleViewPreferencePage() {
super(GRID);
}
public void createFieldEditors() {
addField(new FontFieldEditor("font", "Font selection",
getFieldEditorParent()));
}
#Override
public void init(IWorkbench workbench) {
setPreferenceStore(SvtActivator.getDefault().getPreferenceStore());
}
}
SampleView-> createPartControl()
/**
* This is a callback that will allow us to create the viewer and initialize
* it.
*/
public void createPartControl(Composite parent) {
super.createPartControl(parent);
FillLayout layout = new FillLayout();
layout.marginHeight = layout.marginWidth = 10;
parent.setLayout(layout);
text = new StyledText(parent, SWT.V_SCROLL | SWT.H_SCROLL
| SWT.MULTI | SWT.BORDER);
text.setText("");
}
#Override
public void propertyChange(org.eclipse.jface.util.PropertyChangeEvent event) {
System.out.println("Value changed..");
Object newValue = event.getNewValue();
System.out.println("newValue: "+newValue);
//if (newValue instanceof FontData) {
Font font = new Font(Display.getCurrent(),
(FontData) newValue);
getText().setFont(font);
//}
}
java.lang.ClassCastException: [Lorg.eclipse.swt.graphics.FontData; cannot be cast to org.eclipse.swt.graphics.FontData
at com.example.MyView.propertyChange(MyView.java:111)
at org.eclipse.ui.preferences.ScopedPreferenceStore$3.run(ScopedPreferenceStore.java:375)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.preferences.ScopedPreferenceStore.firePropertyChangeEvent(ScopedPreferenceStore.java:372)
at org.eclipse.jface.preference.PreferenceConverter.setValue(PreferenceConverter.java:463)
at org.eclipse.jface.preference.FontFieldEditor.doStore(FontFieldEditor.java:242)
at org.eclipse.jface.preference.FieldEditor.store(FieldEditor.java:680)
at org.eclipse.jface.preference.FieldEditorPreferencePage.performOk(FieldEditorPreferencePage.java:343)
at org.eclipse.jface.preference.PreferencePage.performApply(PreferencePage.java:432)
at org.eclipse.jface.preference.PreferencePage$2.widgetSelected(PreferencePage.java:281)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:215)
at org.eclipse.ui.internal.handlers.ShowPreferencePageHandler.execute(ShowPreferencePageHandler.java:54)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:290)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:829)
at org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:815)
at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:805)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at de.allianz.abs.konvertortool.product.Application.start(Application.java:20)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Note the [L at the beginning of the first part of the class cast exception [Lorg.eclipse.swt.graphics.FontData. This means the value is an array of FontData so you need to do:
Font font = new Font(Display.getCurrent(),
(FontData []) newValue);
You should also make sure you call dispose on any fonts you create.
During runtime, the class loaded is not the same as the class the calling code was compiled against. Make sure your runtime libraries are the same as your build libraries and that you do not have multiple versions of API's in either your runtime or build.
Related
Context: Lab using the google transit GTFS API. Using a table view to display route data, and I want to make the data editable from the table. I've succeeded in doing that when the property is a String(route ID and route long name), but the code that makes a cell editable throws an error for non-String properties.
Table Code:
table = new TableView<>();
ObservableList data = FXCollections.observableList(routes);
table.setItems(data);
table.setEditable(true);
Code for color data column:
TableColumn routeColorCol = new TableColumn("Route Color");
routeColorCol.setCellValueFactory(new PropertyValueFactory("route_color"));
routeColorCol.setCellFactory(TextFieldTableCell.forTableColumn());
routeColorCol.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent>() {
#Override
public void handle(TableColumn.CellEditEvent t){
((Route) t.getTableView().getItems().get(
t.getTablePosition().getRow())
).setRoute_color((Color)t.getNewValue());
}
});
I add the table to a Vbox and onto a tab pane. The stacktrace I get doesn't point anywhere to my code, so I'm at a loss.
Stacktrace:
Oct 21, 2018 4:39:37 PM javafx.fxml.FXMLLoader$ValueElement processValue
WARNING: Loading FXML document with JavaFX API of version 9.0.1 by JavaFX runtime of version 8.0.141
Exception in thread "JavaFX Application Thread" java.lang.ClassCastException: javafx.scene.paint.Color cannot be cast to java.lang.String
at javafx.util.converter.DefaultStringConverter.toString(DefaultStringConverter.java:34)
at javafx.scene.control.cell.CellUtils.getItemText(CellUtils.java:100)
at javafx.scene.control.cell.CellUtils.updateItem(CellUtils.java:201)
at javafx.scene.control.cell.TextFieldTableCell.updateItem(TextFieldTableCell.java:204)
at javafx.scene.control.TableCell.updateItem(TableCell.java:663)
at javafx.scene.control.TableCell.indexChanged(TableCell.java:468)
at javafx.scene.control.IndexedCell.updateIndex(IndexedCell.java:116)
at com.sun.javafx.scene.control.skin.TableViewSkin.resizeColumnToFitContent(TableViewSkin.java:241)
at com.sun.javafx.scene.control.skin.TableViewSkin.resizeColumnToFitContent(TableViewSkin.java:54)
at com.sun.javafx.scene.control.skin.TableColumnHeader.doColumnAutoSize(TableColumnHeader.java:531)
at com.sun.javafx.scene.control.skin.TableColumnHeader.updateScene(TableColumnHeader.java:474)
at com.sun.javafx.scene.control.skin.TableColumnHeader.handlePropertyChanged(TableColumnHeader.java:314)
at com.sun.javafx.scene.control.skin.TableColumnHeader.lambda$new$49(TableColumnHeader.java:149)
at com.sun.javafx.scene.control.MultiplePropertyChangeListenerHandler$1.changed(MultiplePropertyChangeListenerHandler.java:55)
at javafx.beans.value.WeakChangeListener.changed(WeakChangeListener.java:89)
at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:182)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
at javafx.beans.property.ReadOnlyObjectPropertyBase.fireValueChangedEvent(ReadOnlyObjectPropertyBase.java:74)
at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(ReadOnlyObjectWrapper.java:102)
at javafx.scene.Node$ReadOnlyObjectWrapperManualFire.fireSuperValueChangedEvent(Node.java:831)
at javafx.scene.Node.invalidatedScenes(Node.java:883)
at javafx.scene.Node.setScenes(Node.java:921)
at javafx.scene.Parent$1.onChanged(Parent.java:269)
at com.sun.javafx.collections.TrackableObservableList.lambda$new$29(TrackableObservableList.java:45)
at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
at javafx.collections.ModifiableObservableListBase.setAll(ModifiableObservableListBase.java:90)
at com.sun.javafx.collections.VetoableListDecorator.setAll(VetoableListDecorator.java:116)
at com.sun.javafx.scene.control.skin.NestedTableColumnHeader.updateContent(NestedTableColumnHeader.java:487)
at com.sun.javafx.scene.control.skin.NestedTableColumnHeader.updateTableColumnHeaders(NestedTableColumnHeader.java:317)
at com.sun.javafx.scene.control.skin.NestedTableColumnHeader.checkState(NestedTableColumnHeader.java:544)
at com.sun.javafx.scene.control.skin.NestedTableColumnHeader.computePrefHeight(NestedTableColumnHeader.java:427)
at javafx.scene.Parent.prefHeight(Parent.java:929)
at javafx.scene.layout.Region.prefHeight(Region.java:1435)
at com.sun.javafx.scene.control.skin.TableHeaderRow.computePrefHeight(TableHeaderRow.java:331)
at com.sun.javafx.scene.control.skin.TableHeaderRow.computeMinHeight(TableHeaderRow.java:324)
at javafx.scene.Parent.minHeight(Parent.java:957)
at javafx.scene.layout.Region.minHeight(Region.java:1401)
at javafx.scene.control.SkinBase.computeMinHeight(SkinBase.java:254)
at javafx.scene.control.Control.computeMinHeight(Control.java:489)
at javafx.scene.Parent.minHeight(Parent.java:957)
at javafx.scene.layout.Region.minHeight(Region.java:1401)
at javafx.scene.layout.Region.computeChildMinAreaHeight(Region.java:1697)
at javafx.scene.layout.VBox.getAreaHeights(VBox.java:436)
at javafx.scene.layout.VBox.computeContentHeight(VBox.java:518)
at javafx.scene.layout.VBox.computeMinHeight(VBox.java:396)
at javafx.scene.Parent.minHeight(Parent.java:957)
at javafx.scene.layout.Region.minHeight(Region.java:1401)
at javafx.scene.layout.Region.computeChildPrefAreaHeight(Region.java:1762)
at javafx.scene.layout.AnchorPane.computeHeight(AnchorPane.java:297)
at javafx.scene.layout.AnchorPane.computeMinHeight(AnchorPane.java:246)
at javafx.scene.Parent.minHeight(Parent.java:957)
at javafx.scene.layout.Region.minHeight(Region.java:1401)
at javafx.scene.layout.Region.boundedNodeSizeWithBias(Region.java:1917)
at javafx.scene.layout.Region.layoutInArea(Region.java:2323)
at javafx.scene.layout.Region.layoutInArea(Region.java:2238)
at javafx.scene.layout.Region.layoutInArea(Region.java:2179)
at javafx.scene.layout.StackPane.layoutChildren(StackPane.java:342)
at javafx.scene.Parent.layout(Parent.java:1087)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Scene.doLayoutPass(Scene.java:552)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2397)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$30(Toolkit.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:354)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:381)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:510)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:490)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$404(QuantumToolkit.java:319)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:748)
Exception in thread "JavaFX Application Thread" java.lang.ClassCastException: javafx.scene.paint.Color cannot be cast to java.lang.String
at javafx.util.converter.DefaultStringConverter.toString(DefaultStringConverter.java:34)
at javafx.scene.control.cell.CellUtils.getItemText(CellUtils.java:100)
at javafx.scene.control.cell.CellUtils.updateItem(CellUtils.java:201)
at javafx.scene.control.cell.TextFieldTableCell.updateItem(TextFieldTableCell.java:204)
at javafx.scene.control.TableCell.updateItem(TableCell.java:663)
at javafx.scene.control.TableCell.indexChanged(TableCell.java:468)
at javafx.scene.control.IndexedCell.updateIndex(IndexedCell.java:116)
at com.sun.javafx.scene.control.skin.TableRowSkinBase.updateCells(TableRowSkinBase.java:533)
at com.sun.javafx.scene.control.skin.TableRowSkinBase.init(TableRowSkinBase.java:147)
at com.sun.javafx.scene.control.skin.TableRowSkin.<init>(TableRowSkin.java:64)
at javafx.scene.control.TableRow.createDefaultSkin(TableRow.java:212)
at javafx.scene.control.Control.impl_processCSS(Control.java:872)
at javafx.scene.Node.processCSS(Node.java:9058)
at javafx.scene.Node.applyCss(Node.java:9155)
at com.sun.javafx.scene.control.skin.VirtualFlow.setCellIndex(VirtualFlow.java:1964)
at com.sun.javafx.scene.control.skin.VirtualFlow.getCell(VirtualFlow.java:1797)
at com.sun.javafx.scene.control.skin.VirtualFlow.getCellLength(VirtualFlow.java:1879)
at com.sun.javafx.scene.control.skin.VirtualFlow.computeViewportOffset(VirtualFlow.java:2528)
at com.sun.javafx.scene.control.skin.VirtualFlow.layoutChildren(VirtualFlow.java:1189)
at javafx.scene.Parent.layout(Parent.java:1087)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Parent.layout(Parent.java:1093)
at javafx.scene.Scene.doLayoutPass(Scene.java:552)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2397)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$30(Toolkit.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:354)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:381)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:510)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:490)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$404(QuantumToolkit.java:319)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:748)
You have used raw type which has made this possible to compile, but type inconsistency happened during runtime. Your routeColorCol is supposed to display javafx.scene.paint.Color values, but your cell factory callback is written to read String values - this is what caused the ClassCastException at runtime.
From TextFieldTableCell.forTableColumn():
Provides a TextField that allows editing of the cell content when the
cell is double-clicked, or when TableView.edit(int,
javafx.scene.control.TableColumn) is called. This method will only
work on TableColumn instances which are of type String.
You should use the overload method TextFieldTableCell.forTableColumn(StringConverter).
routeColorCol.setCellFactory(
TextFieldTableCell.<Foo, Color> forTableColumn(new StringConverter<Color>() {
#Override
public String toString(Color object) {
return object != null ? object.toString() : "";
}
#Override
public Color fromString(String string) {
return Color.valueOf(string);
}
}
));
I am trying to create an rcp application. So far I only have a menu with two menuitems. (File -> Get data and File -> Exit) Exit works fine, but when I click on Get data, it gives me an error:
!ENTRY org.eclipse.ui 4 0 2017-01-18 21:49:31.066
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:68)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:252)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:234)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:493)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:486)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:799)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:675)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$7(HandledContributionItem.java:659)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$4.handleEvent(HandledContributionItem.java:592)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at lab5_vsim1288.Application.start(Application.java:25)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
Caused by: java.lang.NullPointerException
at commands.GetDataCommand.execute(GetDataCommand.java:33)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295)
at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
... 38 more
I get the error here:
//
IWorkbenchPage p = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
View v = (View) p.findView("rcp.view");
v.createViewer();
I already tried debugging it and it shows me this:
/**
* Returns the workbench. Fails if the workbench has not been created yet.
*
* #return the workbench
*/
public static IWorkbench getWorkbench() {
if (Workbench.getInstance() == null) { // <--
// app forgot to call createAndRunWorkbench beforehand
throw new IllegalStateException(WorkbenchMessages.PlatformUI_NoWorkbench); // <--
}
return Workbench.getInstance();
}
Am I missing something? Any help would be appreciated.
I am trying to create a Custom ClassPath entry as mention here. I have done as mentioned in the link and also referred the source code of JUnit and M2E doing this. But when I select the new Custom Library and clicks next, I am getting the below error
java.lang.IllegalAccessException: Class org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI can not access a member of class com.company.eclipse.buildpath.CustomClasspathContainerPage with modifiers "protected"
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102)
at java.lang.Class.newInstance(Class.java:436)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:184)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.jdt.internal.ui.util.CoreUtility$1.run(CoreUtility.java:101)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jdt.internal.ui.util.CoreUtility.createExtension(CoreUtility.java:98)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerDescriptor.createPage(ClasspathContainerDescriptor.java:64)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerWizard.getContainerPage(ClasspathContainerWizard.java:142)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerWizard.getNextPage(ClasspathContainerWizard.java:172)
at org.eclipse.jface.wizard.WizardPage.getNextPage(WizardPage.java:166)
at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:878)
at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:425)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:619)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.jface.window.Window.open(Window.java:803)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.ClasspathContainerWizard.openWizard(ClasspathContainerWizard.java:230)
at org.eclipse.jdt.ui.wizards.BuildPathDialogAccess.chooseContainerEntries(BuildPathDialogAccess.java:334)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.openContainerSelectionDialog(LibrariesWorkbookPage.java:892)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.libaryPageCustomButtonPressed(LibrariesWorkbookPage.java:266)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage.access$0(LibrariesWorkbookPage.java:253)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.LibrariesWorkbookPage$LibrariesAdapter.customButtonPressed(LibrariesWorkbookPage.java:202)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.buttonPressed(TreeListDialogField.java:171)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.doButtonSelected(TreeListDialogField.java:400)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField.access$2(TreeListDialogField.java:396)
at org.eclipse.jdt.internal.ui.wizards.dialogfields.TreeListDialogField$2.widgetSelected(TreeListDialogField.java:361)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.jface.window.Window.open(Window.java:803)
at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:157)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
Below are the contents of CustomClasspathContainerPage
public class CustomClasspathContainerPage extends NewElementWizardPage implements IClasspathContainerPage, IClasspathContainerPageExtension {
private IClasspathEntry containerEntry;
IJavaProject javaProject;
protected CustomClasspathContainerPage() {
super("CustomContainerPage");
setTitle("Add custom library");
}
#Override
public void initialize(IJavaProject javaProject, IClasspathEntry[] currentEntries) {
this.javaProject = javaProject;
}
#Override
public void createControl(Composite parent) {
Composite container = new Composite(parent, SWT.NONE);
GridLayout layout = new GridLayout();
layout.marginHeight = 0;
layout.marginWidth = 0;
container.setLayout((Layout) layout);
new Label(container, 0).setText("This will set the Custom library to this project.");
this.setControl((Control) container);
}
#Override
public boolean finish() {
if (containerEntry == null) {
containerEntry = JavaCore.newContainerEntry(Core.CONTAINER_PATH);
}
return true;
}
#Override
public IClasspathEntry getSelection() {
return containerEntry;
}
#Override
public void setSelection(IClasspathEntry containerEntry) {
this.containerEntry = containerEntry;
}
}
Your constructor is declared to be protected it must be public:
public CustomClasspathContainerPage() {
I'm trying to design an application using a combination of JavaFX and Swing components, initially I created a Swing project and am trying to integrate a JavaFX javafx.scene.control.DatePicker control.
I read elsewhere that I should be able to do this with a javafx.embed.swing.JFXPanel so I created a new JPanel and using Eclipses WindowBuilder added a JFXPanel but when I added a DatePicker Eclipse throws an error.
I am using the latest version of JRE/JDK.
The code looks like this;
import javax.swing.JPanel;
import javafx.embed.swing.JFXPanel;
import javafx.scene.control.DatePicker;
public class test extends JPanel {
/**
* #wbp.nonvisual location=99,99
*/
private final DatePicker datePicker = new DatePicker();
/**
* Create the panel.
*/
public test() {
JFXPanel panel = new JFXPanel();
add(panel);
}
}
When I look at the design view;
Exception during constructor evaluation
An exception happened during evaluation of
new DatePicker()
Constructor DatePicker() was used with the parameters {}.
Note: null values may occur when parsing complex expressions that can't be resolved at design-time. java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.DatePicker
Hide stack trace.
Stack trace:
org.eclipse.wb.internal.core.utils.exception.DesignerException: 307 (Exception during constructor evaluation). new DatePicker() DatePicker() {} java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.DatePicker
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.createConstructorProblemException(InvocationEvaluator.java:593)
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.evaluate(InvocationEvaluator.java:268)
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.evaluate(InvocationEvaluator.java:81)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate0(AstEvaluationEngine.java:177)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate(AstEvaluationEngine.java:61)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluateExpression(JavaInfoEvaluationHelper.java:630)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluate(JavaInfoEvaluationHelper.java:502)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.evaluateNode(JavaInfoParser.java:1309)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$1(JavaInfoParser.java:1300)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor$3.run(JavaInfoParser.java:602)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runRethrow(ExecutionUtils.java:119)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor.postVisit(JavaInfoParser.java:592)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2714)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759)
at org.eclipse.jdt.core.dom.VariableDeclarationFragment.accept0(VariableDeclarationFragment.java:263)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782)
at org.eclipse.jdt.core.dom.FieldDeclaration.accept0(FieldDeclaration.java:289)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitFields(ExecutionFlowUtils.java:267)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:223)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:191)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parseRootMethods(JavaInfoParser.java:312)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:268)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$9(JavaInfoParser.java:238)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:153)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:1)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:159)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:151)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:534)
at org.eclipse.wb.internal.core.editor.DesignPage.access$9(DesignPage.java:522)
at org.eclipse.wb.internal.core.editor.DesignPage$8$1.run(DesignPage.java:449)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:186)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4761)
at org.eclipse.wb.internal.core.editor.DesignPage$8.run(DesignPage.java:446)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:463)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:371)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:500)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:465)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:415)
at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
at org.eclipse.wb.internal.core.editor.UndoManager.activate(UndoManager.java:90)
at org.eclipse.wb.internal.core.editor.DesignPage.handleActiveState_True(DesignPage.java:263)
at org.eclipse.wb.internal.core.editor.DesignPage.handleActiveState(DesignPage.java:241)
at org.eclipse.wb.internal.core.editor.multi.DefaultMultiMode.showPage(DefaultMultiMode.java:125)
at org.eclipse.wb.internal.core.editor.multi.DefaultMultiMode$1.widgetSelected(DefaultMultiMode.java:63)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1137)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1122)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:788)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3158)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1841)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:330)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.DatePicker
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.evaluate(InvocationEvaluator.java:262)
... 81 more
Full context stack trace:
java.lang.Error: new DatePicker()
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate(AstEvaluationEngine.java:71)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluateExpression(JavaInfoEvaluationHelper.java:630)
at org.eclipse.wb.internal.core.model.JavaInfoEvaluationHelper.evaluate(JavaInfoEvaluationHelper.java:502)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.evaluateNode(JavaInfoParser.java:1309)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$1(JavaInfoParser.java:1300)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor$3.run(JavaInfoParser.java:602)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runRethrow(ExecutionUtils.java:119)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$ExecutionFlowParseVisitor.postVisit(JavaInfoParser.java:592)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2714)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759)
at org.eclipse.jdt.core.dom.VariableDeclarationFragment.accept0(VariableDeclarationFragment.java:263)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782)
at org.eclipse.jdt.core.dom.FieldDeclaration.accept0(FieldDeclaration.java:289)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visitFields(ExecutionFlowUtils.java:267)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:223)
at org.eclipse.wb.core.eval.ExecutionFlowUtils.visit(ExecutionFlowUtils.java:191)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parseRootMethods(JavaInfoParser.java:312)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:268)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.access$9(JavaInfoParser.java:238)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:153)
at org.eclipse.wb.internal.core.parser.JavaInfoParser$1.runObject(JavaInfoParser.java:1)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:159)
at org.eclipse.wb.internal.core.parser.JavaInfoParser.parse(JavaInfoParser.java:151)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:534)
at org.eclipse.wb.internal.core.editor.DesignPage.access$9(DesignPage.java:522)
at org.eclipse.wb.internal.core.editor.DesignPage$8$1.run(DesignPage.java:449)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:186)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4761)
at org.eclipse.wb.internal.core.editor.DesignPage$8.run(DesignPage.java:446)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:463)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:371)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:500)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:465)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:415)
at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
at org.eclipse.wb.internal.core.editor.UndoManager.activate(UndoManager.java:90)
at org.eclipse.wb.internal.core.editor.DesignPage.handleActiveState_True(DesignPage.java:263)
at org.eclipse.wb.internal.core.editor.DesignPage.handleActiveState(DesignPage.java:241)
at org.eclipse.wb.internal.core.editor.multi.DefaultMultiMode.showPage(DefaultMultiMode.java:125)
at org.eclipse.wb.internal.core.editor.multi.DefaultMultiMode$1.widgetSelected(DefaultMultiMode.java:63)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1137)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1122)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:788)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3158)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1841)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:330)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
Caused by: org.eclipse.wb.internal.core.utils.exception.DesignerException: 307 (Exception during constructor evaluation). new DatePicker() DatePicker() {} java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.DatePicker
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.createConstructorProblemException(InvocationEvaluator.java:593)
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.evaluate(InvocationEvaluator.java:268)
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.evaluate(InvocationEvaluator.java:81)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate0(AstEvaluationEngine.java:177)
at org.eclipse.wb.core.eval.AstEvaluationEngine.evaluate(AstEvaluationEngine.java:61)
... 78 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class javafx.scene.control.DatePicker
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.eclipse.wb.internal.core.eval.evaluators.InvocationEvaluator.evaluate(InvocationEvaluator.java:262)
... 81 more
Is there a simple solution to getting this working, or perhaps I should use a different component for date time selection?
I am implementing an new eclipse refactoring. This will enable developers to Pull-up the preconditions statements from a child method to the parent method.
This all works perfectly when I select "Finish" in the refactoring wizard, but when I select "Preview" I get an error "No target edit provided." This seems to be caused by a problem in the TextEdit returned from ASTRewrite.rewriteAST(). However I cannot figure out why.
The stack trace of the exception happens after my Refactoring.createChange() code is run, and the change is used to generate the preview.
org.eclipse.text.edits.MalformedTreeException: No target edit provided.
at org.eclipse.text.edits.MoveSourceEdit.performConsistencyCheck(MoveSourceEdit.java:208)
at org.eclipse.text.edits.TextEdit.traverseConsistencyCheck(TextEdit.java:873)
at org.eclipse.text.edits.MoveSourceEdit.traverseConsistencyCheck(MoveSourceEdit.java:183)
at org.eclipse.text.edits.TextEdit.traverseConsistencyCheck(TextEdit.java:869)
at org.eclipse.text.edits.TextEdit.traverseConsistencyCheck(TextEdit.java:869)
at org.eclipse.text.edits.TextEditProcessor.checkIntegrityDo(TextEditProcessor.java:176)
at org.eclipse.text.edits.TextEdit.dispatchCheckIntegrity(TextEdit.java:743)
at org.eclipse.text.edits.TextEditProcessor.performEdits(TextEditProcessor.java:151)
at org.eclipse.ltk.core.refactoring.TextChange.getPreviewDocument(TextChange.java:534)
at org.eclipse.ltk.core.refactoring.TextChange.getPreviewDocument(TextChange.java:403)
at org.eclipse.ltk.core.refactoring.TextChange.getPreviewContent(TextChange.java:411)
at org.eclipse.ltk.internal.ui.refactoring.TextEditChangePreviewViewer.setInput(TextEditChangePreviewViewer.java:209)
at org.eclipse.ltk.internal.ui.refactoring.AbstractChangeNode.feedInput(AbstractChangeNode.java:99)
at org.eclipse.ltk.internal.ui.refactoring.PreviewWizardPage.showPreview(PreviewWizardPage.java:598)
at org.eclipse.ltk.internal.ui.refactoring.PreviewWizardPage.access$6(PreviewWizardPage.java:583)
at org.eclipse.ltk.internal.ui.refactoring.PreviewWizardPage$7.selectionChanged(PreviewWizardPage.java:574)
at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.runtime.Platform.run(Platform.java:888)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160)
at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2132)
at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1669)
at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:1124)
at org.eclipse.jface.viewers.Viewer.setSelection(Viewer.java:392)
at org.eclipse.ltk.internal.ui.refactoring.PreviewWizardPage.setVisible(PreviewWizardPage.java:505)
at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.makeVisible(RefactoringWizardDialog2.java:762)
at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.showCurrentPage(RefactoringWizardDialog2.java:477)
at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.nextOrPreviewPressed(RefactoringWizardDialog2.java:507)
at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.access$2(RefactoringWizardDialog2.java:492)
at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2$1.widgetSelected(RefactoringWizardDialog2.java:691)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3880)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3473)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation$1.run(RefactoringWizardOpenOperation.java:143)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:155)
at org.jmlspecs.eclipse.refactor.action.AbstractMethodActionDelegate.run(AbstractMethodActionDelegate.java:78)
at org.jmlspecs.eclipse.refactor.action.AbstractMethodActionDelegate.run(AbstractMethodActionDelegate.java:67)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:452)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3880)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3473)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
Currently the code that performs the change looks like this:
CompilationUnit sourceNode = ...
ASTRewrite sourceRewrite = ASTRewrite.create(sourceNode.getAST());
Statement statement = ...
sourceRewrite.createMoveTarget(statement);
CompilationUnit destinationNode = ...
MethodDeclaration destinationMethod = ...
ASTRewrite destinationRewrite = ASTRewrite.create(destinationNode.getAST());
ListRewrite lrw = destinationRewrite.getListRewrite(destinationMethod.getBody(),
Block.STATEMENTS_PROPERTY);
lrw.insertFirst(statement, null);
I know that the way createMoveTarget is used is not how it is documented, but when I follow the documentation like below, the statement is deleted from the source but not moved to the destination and I still get the same error in the preview.
CompilationUnit sourceNode = ...
ASTRewrite sourceRewrite = ASTRewrite.create(sourceNode.getAST());
Statement statement = ...
Statement replacement = sourceRewrite.createMoveTarget(statement);
sourceRewrite.remove(statement, null);
CompilationUnit destinationNode = ...
MethodDeclaration destinationMethod = ...
ASTRewrite destinationRewrite = ASTRewrite.create(destinationNode.getAST());
ListRewrite lrw = destinationRewrite.getListRewrite(destinationMethod.getBody(),
Block.STATEMENTS_PROPERTY);
lrw.insertFirst(replacement, null);
Here is an example of the Refactoring being performed.
Before:
class A {
foo(int a) {
return a * 2;
}
}
class B {
foo(int a) {
JC.requires(a > 1);
return a * 3;
}
}
After:
class A {
foo(int a) {
JC.requires(a > 1);
return a * 2;
}
}
class B extends A {
foo(int a) {
return a * 3;
}
}
I found the eclipse.org article the most helpful to get me started.
A good place to get started debugging the code is to set breakpoints on org.eclipse.jdt.core.dom.rewrite.ASTRewrite, particularly the rewriteAST() method, then trigger some refactorings.
Here are a few you might find useful. Are you looking for anything in particular or a general sense of how to process the AST?
http://www.ibm.com/developerworks/opensource/library/os-ast/
http://blog.sahits.ch/?p=228
http://www.vogella.com/articles/EclipseJDT/article.html