Java 类org.eclipse.jface.viewers.TreeViewerFocusCellManager 实例源码

private void initEditOnDoubleClick() {
    TreeViewerFocusCellManager focusCellManager = new TreeViewerFocusCellManager(treeViewer, new FocusCellOwnerDrawHighlighter(treeViewer));
    ColumnViewerEditorActivationStrategy activationSupport = new ColumnViewerEditorActivationStrategy(treeViewer) {
        @Override
        protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
            // Enable editor only with mouse double click
            if (event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION) {
                EventObject source = event.sourceEvent;
                if (source instanceof MouseEvent && ((MouseEvent) source).button == 3)
                    return false;

                return true;
            }

            return false;
        }
    };
    TreeViewerEditor.create(treeViewer, focusCellManager, activationSupport,
    // ColumnViewerEditor.TABBING_HORIZONTAL |
            ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);
}

protected void setUpCellEditor(ColumnViewer viewer){
    // set up validation of the cell editors
    textCellEditor = new TextCellEditor((Composite) viewer.getControl());

    textCellEditor.addListener(new ICellEditorListener() {
        @Override
        public void editorValueChanged(boolean oldValidState, boolean newValidState){
            if (newValidState) {
                textCellEditor.getControl()
                    .setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
            } else {
                textCellEditor.getControl()
                    .setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
            }
        }

        @Override
        public void cancelEditor(){
            textCellEditor.getControl()
                .setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
        }

        @Override
        public void applyEditorValue(){
            textCellEditor.getControl()
                .setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
        }
    });

    focusCell =
        new TreeViewerFocusCellManager((TreeViewer) viewer, new FocusCellHighlighter(viewer) {

        });

    ColumnViewerEditorActivationStrategy actSupport =
        new ColumnViewerEditorActivationStrategy(viewer) {
            @Override
            protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event){
                return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
                    || event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
                    || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
                        && event.keyCode == SWT.CR)
                    || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
                        && event.keyCode == SWT.KEYPAD_CR)
                    || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
            }
        };

    TreeViewerEditor.create((TreeViewer) viewer, focusCell, actSupport,
        ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);
}