1- Using the designer, I created the custom composite that I included in this message.
2- I managed to have this composite to be offered as a Custom Control.
3- I created a new SWT Composite in the designer.
4- I tried to put the composite from #1 into the new composite. Nothing gets added and the log shows this:
- Code: Select all
java.lang.NullPointerException
at com.swtdesigner.model.swt.forms.control.FormsLabelInfo.createSingleControl(FormsLabelInfo.java:70)
at com.swtdesigner.model.swt.widgets.control.ControlInfo.createControl(ControlInfo.java:390)
at com.swtdesigner.model.swt.widgets.composite.AbstractCompositeInfo.createControl(AbstractCompositeInfo.java:152)
at com.swtdesigner.model.swt.widgets.composite.ThisCompositeInfo.createControl(ThisCompositeInfo.java:99)
at com.swtdesigner.model.swt.widgets.composite.FrameInfo.createControl(FrameInfo.java:512)
at com.swtdesigner.model.swt.widgets.composite.AbstractCompositeInfo.createControl(AbstractCompositeInfo.java:152)
at com.swtdesigner.model.swt.widgets.composite.ThisCompositeInfo.createControl(ThisCompositeInfo.java:99)
at com.swtdesigner.model.swt.widgets.composite.AbstractCompositeInfo.createControl(AbstractCompositeInfo.java:137)
at com.swtdesigner.model.JavaInfo.notifyPropertyChanged(JavaInfo.java:5469)
at com.swtdesigner.model.swt.widgets.control.ControlInfo.notifyPropertyChanged(ControlInfo.java:206)
at com.swtdesigner.model.JavaInfo.notifyPropertyChanged(JavaInfo.java:5456)
at com.swtdesigner.model.JavaInfo.unlockNotify(JavaInfo.java:5429)
at com.swtdesigner.model.JavaInfo.endEdit(JavaInfo.java:831)
at com.swtdesigner.gef.command.swt.layout.absolute.AbsoluteAddControlCommand.execute(AbsoluteAddControlCommand.java:37)
at org.eclipse.gef.commands.CommandStack.execute(CommandStack.java:78)
at com.swtdesigner.gef.DesignerEditDomain$1.execute(DesignerEditDomain.java:36)
at org.eclipse.gef.tools.AbstractTool.executeCurrentCommand(AbstractTool.java:416)
at org.eclipse.gef.tools.CreationTool.performCreation(CreationTool.java:198)
at org.eclipse.gef.tools.CreationTool.handleButtonUp(CreationTool.java:122)
at org.eclipse.gef.tools.AbstractTool.mouseUp(AbstractTool.java:1006)
at org.eclipse.gef.EditDomain.mouseUp(EditDomain.java:232)
at com.swtdesigner.gef.DesignerEditDomain.mouseUp(DesignerEditDomain.java:225)
at org.eclipse.gef.ui.parts.DomainEventDispatcher.dispatchMouseReleased(DomainEventDispatcher.java:346)
at org.eclipse.draw2d.LightweightSystem$EventHandler.mouseUp(LightweightSystem.java:511)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:136)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
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.core.launcher.Main.basicRun(Main.java:185)
at org.eclipse.core.launcher.Main.run(Main.java:704)
at org.eclipse.core.launcher.Main.main(Main.java:688)
Following is the code of the Composite that was added as a Custom composite.
- Code: Select all
package examples.forms;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.forms.widgets.FormToolkit;
public class WindControl extends Composite {
public WindControl(Composite parent, int style) {
super(parent, style);
final FormLayout formLayout = new FormLayout();
formLayout.marginWidth = 5;
formLayout.marginHeight = 5;
setLayout(formLayout);
FormToolkit toolkit = new FormToolkit(Display.getCurrent());
toolkit.adapt(this);
final Label nLabel = toolkit.createLabel(this, "N", SWT.NONE);
final FormData formData_2 = new FormData();
formData_2.bottom = new FormAttachment(0, 23);
formData_2.top = new FormAttachment(0, 6);
formData_2.left = new FormAttachment(0, 59);
nLabel.setLayoutData(formData_2);
final Label eLabel = toolkit.createLabel(this, "E", SWT.NONE);
final FormData formData = new FormData();
formData.top = new FormAttachment(0, 52);
formData.left = new FormAttachment(0, 109);
formData.bottom = new FormAttachment(0, 69);
formData.right = new FormAttachment(0, 117);
eLabel.setLayoutData(formData);
final Label wLabel = toolkit.createLabel(this, "W", SWT.NONE);
final FormData formData_3 = new FormData();
formData_3.top = new FormAttachment(0, 54);
formData_3.left = new FormAttachment(0, 7);
wLabel.setLayoutData(formData_3);
final Label sLabel = toolkit.createLabel(this, "S", SWT.NONE);
final FormData formData_1 = new FormData();
formData_1.top = new FormAttachment(0, 106);
formData_1.left = new FormAttachment(0, 59);
formData_1.bottom = new FormAttachment(0, 123);
sLabel.setLayoutData(formData_1);
final Button button = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_4 = new FormData();
formData_4.left = new FormAttachment(0, 55);
formData_4.bottom = new FormAttachment(0, 44);
formData_4.top = new FormAttachment(0, 25);
button.setLayoutData(formData_4);
final Button neButton = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_5 = new FormData();
formData_5.left = new FormAttachment(0, 77);
formData_5.right = new FormAttachment(0, 93);
formData_5.top = new FormAttachment(0, 32);
neButton.setLayoutData(formData_5);
final Button eButton = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_6 = new FormData();
formData_6.top = new FormAttachment(0, 52);
formData_6.left = new FormAttachment(0, 88);
formData_6.bottom = new FormAttachment(0, 70);
formData_6.right = new FormAttachment(0, 104);
eButton.setLayoutData(formData_6);
final Button seButton = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_7 = new FormData();
formData_7.top = new FormAttachment(0, 74);
formData_7.left = new FormAttachment(0, 77);
formData_7.bottom = new FormAttachment(0, 93);
seButton.setLayoutData(formData_7);
final Button button_4 = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_8 = new FormData();
formData_8.top = new FormAttachment(0, 85);
formData_8.left = new FormAttachment(0, 55);
formData_8.bottom = new FormAttachment(0, 104);
button_4.setLayoutData(formData_8);
final Button swButton = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_9 = new FormData();
formData_9.right = new FormAttachment(button_4, -5, SWT.LEFT);
formData_9.bottom = new FormAttachment(seButton, 0, SWT.BOTTOM);
formData_9.left = new FormAttachment(button_4, -21, SWT.LEFT);
swButton.setLayoutData(formData_9);
final Button wButton = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_10 = new FormData();
formData_10.top = new FormAttachment(0, 54);
formData_10.left = new FormAttachment(0, 24);
formData_10.bottom = new FormAttachment(0, 73);
wButton.setLayoutData(formData_10);
final Button button_7 = toolkit.createButton(this, "", SWT.RADIO);
final FormData formData_11 = new FormData();
formData_11.top = new FormAttachment(neButton, 0, SWT.TOP);
formData_11.left = new FormAttachment(swButton, 0, SWT.LEFT);
button_7.setLayoutData(formData_11);
//
}
public void dispose() {
super.dispose();
}
protected void checkSubclass() {
}
}
