| How to add content assist in a form-based editor's Text widget? [message #463117] |
Wed, 26 October 2005 21:18 |
 Channing Walton
Messages: 110
Registered: July 2009 |
Senior Member |
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Hi,
I am trying to add content assist to a Text instance on a Form in a Form-based editor in an RCP app, but have two problems:
1. the completion keybinding does not activate the content assist (do I need to create the keybinding?)
2. after modifying the text in the Text widget, saving the editor results in an exception from the SaveAction:
org.eclipse.jface.util.Assert$AssertionFailedException: Assertion failed: parent control has CueHandler: LayoutComposite {}
at org.eclipse.jface.util.Assert.isTrue(Assert.java:180)
at
org.eclipse.jface.contentassist.AbstractControlContentAssist SubjectAdapter$SmartFieldController$FieldFocusListener.insta ll(AbstractControlContentAssistSubjectAdapter.java:622)
at
org.eclipse.jface.contentassist.AbstractControlContentAssist SubjectAdapter$SmartFieldController$FieldFocusListener.focus Gained(AbstractControlContentAssistSubjectAdapter.java:603)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:105)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1412)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1436)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1417)
at org.eclipse.swt.widgets.Control.sendFocusEvent(Control.java: 1995)
at org.eclipse.swt.widgets.Control.forceFocus(Control.java:637)
at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWi ndow.java:674)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow. java:2137)
at org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOpe ration(SaveableHelper.java:122)
at org.eclipse.ui.internal.SaveableHelper.savePart(SaveableHelp er.java:100)
at org.eclipse.ui.internal.EditorManager.savePart(EditorManager .java:1140)
at org.eclipse.ui.internal.WorkbenchPage.savePart(WorkbenchPage .java:2741)
at org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPa ge.java:2754)
----
This is what I am doing to add the content assist:
// add content assist to functionText
private void addContentAssist() {
TextContentAssistSubjectAdapter adapter = new TextContentAssistSubjectAdapter(functionText);
final SubjectControlContentAssistant assistant = new SubjectControlContentAssistant();
assistant.enableAutoActivation(true);
assistant.enableAutoInsert(true);
assistant.enablePrefixCompletion(false);
assistant.setContentAssistProcessor(new FieldDescriptorContentAssistProcessor(fieldDescriptors), IDocument.DEFAULT_CONTENT_TYPE);
assistant.install(adapter);
ContentAssistHandler contentAssistHandler = ContentAssistHandler.createHandlerForText(functionText, assistant);
contentAssistHandler.setEnabled(true);
}
The content assistant is really basic with computeCompletionProposals returning a set of Strings, but its never being called.
I cannot find an example of using content assist in a formbased editor, so any help is much appreciated.
Channing
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