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Revision f57d8d08

Added by Patrick Plitzner about 6 years ago

ref #6746 Hide menu items when nothing is selected

View differences:

eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/featuretree/e4/handler/RemoveFeatureHandler.java
12 12

  
13 13
import org.eclipse.e4.core.di.annotations.CanExecute;
14 14
import org.eclipse.e4.core.di.annotations.Execute;
15
import org.eclipse.e4.core.di.annotations.Optional;
15 16
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
16 17
import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;
17 18
import org.eclipse.e4.ui.services.IServiceConstants;
......
43 44

  
44 45
    @CanExecute
45 46
    public boolean canExecute(
46
            @Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection,
47
            @Optional@Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection,
47 48
            @Named(IServiceConstants.ACTIVE_PART)MPart thisPart,
48 49
            MHandledMenuItem menuItem) {
49
        boolean canExecute = !selection.isEmpty();
50
        for(Object object:selection.toArray()){
51
            canExecute &= object instanceof FeatureNode;
50
        boolean canExecute = false;
51
        if(selection!=null && !selection.isEmpty()){
52
            for(Object object:selection.toArray()){
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                canExecute &= object instanceof FeatureNode;
54
            }
52 55
        }
53 56
        canExecute &= thisPart.getObject() instanceof IE4ViewerPart;
54 57
        menuItem.setVisible(canExecute);

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