Examples with NSTypeTreeContentProvider eu.esdihumboldt.hale.ui.service.schema.util.NSTypeTreeContentProvider used on opensource projects

Example 1 with NSTypeTreeContentProvider

use of eu.esdihumboldt.hale.ui.service.schema.util.NSTypeTreeContentProvider in project hale by halestudio.

the class EditMappableTypesPage method createControl.

/**
 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
 */
@Override
public void createControl(Composite parent) {
    parent.setLayout(new GridLayout());
    // create filtered tree
    PatternFilter patternFilter = new PatternFilter();
    patternFilter.setIncludeLeadingWildcard(true);
    FilteredTree tree = new FilteredTree(parent, SWT.BORDER | SWT.CHECK | SWT.H_SCROLL | SWT.V_SCROLL, patternFilter, true) {

        @Override
        protected TreeViewer doCreateTreeViewer(Composite parent, int style) {
            return new CheckboxTreeViewer(parent, style);
        }
    };
    // configure viewer
    viewer = (CheckboxTreeViewer) tree.getViewer();
    contentProvider = new NSTypeTreeContentProvider();
    viewer.setContentProvider(contentProvider);
    viewer.setComparator(new DefinitionComparator());
    viewer.addDoubleClickListener(new IDoubleClickListener() {

        @Override
        public void doubleClick(DoubleClickEvent event) {
            IStructuredSelection selection = (IStructuredSelection) event.getSelection();
            Object doubleClicked = selection.getFirstElement();
            if (doubleClicked instanceof String)
                viewer.setExpandedState(doubleClicked, !viewer.getExpandedState(doubleClicked));
            else {
                boolean newState = !checkStateProvider.isChecked(doubleClicked);
                viewer.setChecked(doubleClicked, newState);
                checkStateOfTypeChanged((TypeDefinition) doubleClicked, newState);
            }
        }
    });
    viewer.setLabelProvider(definitionLabels);
    // because elements filtered by FilteredTree lose their checked state:
    checkStateProvider = new ICheckStateProvider() {

        @Override
        public boolean isGrayed(Object element) {
            if (element instanceof String) {
                Object[] children = contentProvider.getChildren(element);
                boolean containsChecked = false;
                boolean containsUnchecked = false;
                for (Object child : children) {
                    if (isChecked(child))
                        containsChecked = true;
                    else
                        containsUnchecked = true;
                    if (containsChecked && containsUnchecked)
                        return true;
                }
            }
            return false;
        }

        @Override
        public boolean isChecked(Object element) {
            if (element instanceof String) {
                for (Object child : contentProvider.getChildren(element)) if (isChecked(child))
                    return true;
                return false;
            }
            return ((TypeDefinition) element).getConstraint(MappingRelevantFlag.class).isEnabled() != changedTypes.contains(element);
        }
    };
    viewer.setCheckStateProvider(checkStateProvider);
    viewer.addCheckStateListener(new ICheckStateListener() {

        @Override
        public void checkStateChanged(CheckStateChangedEvent event) {
            if (event.getElement() instanceof String) {
                // update children
                viewer.setGrayed(event.getElement(), false);
                for (Object child : contentProvider.getChildren(event.getElement())) {
                    // if (mappedTypeFilter.select(viewer, event.getElement(), child)) {
                    if (checkStateProvider.isChecked(child) != event.getChecked()) {
                        viewer.setChecked(child, event.getChecked());
                        checkStateOfTypeChanged((TypeDefinition) child, event.getChecked());
                    }
                // }
                }
                viewer.setGrayed(event.getElement(), checkStateProvider.isGrayed(event.getElement()));
            // only two levels, no need to update any parents or
            // children's children
            } else {
                // if (mappedTypeFilter.select(viewer, null, event.getElement()))
                checkStateOfTypeChanged((TypeDefinition) event.getElement(), event.getChecked());
            // else if (!event.getChecked())
            // viewer.setChecked(event.getElement(), true);
            }
        }
    });
    // // filter types which are used in the current alignment
    // viewer.addFilter(mappedTypeFilter);
    // set input to all types in the given index
    viewer.setInput(typeIndex.getTypes());
    // expand all except XMLSchema
    viewer.expandAll();
    viewer.setExpandedState("http://www.w3.org/2001/XMLSchema", false);
    // set control
    setControl(viewer.getControl());
}