Examples with DDFormLayout com.haulmont.cuba.web.widgets.addons.dragdroplayouts.DDFormLayout used on opensource projects

Example 1 with DDFormLayout

use of com.haulmont.cuba.web.widgets.addons.dragdroplayouts.DDFormLayout in project cuba by cuba-platform.

the class DefaultFormLayoutDropHandler method handleComponentReordering.

/*
     * (non-Javadoc)
     * 
     * @see
     * com.haulmont.cuba.web.widgets.addons.dragdroplayouts.drophandlers.AbstractDefaultLayoutDropHandler
     * #handleComponentReordering(com.vaadin.event.dd.DragAndDropEvent)
     */
@Override
protected void handleComponentReordering(DragAndDropEvent event) {
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event.getTransferable();
    FormLayoutTargetDetails details = (FormLayoutTargetDetails) event.getTargetDetails();
    DDFormLayout layout = (DDFormLayout) details.getTarget();
    Component comp = transferable.getComponent();
    int idx = details.getOverIndex();
    int oldIdx = layout.getComponentIndex(comp);
    if (idx == oldIdx) {
        // Dropping on myself
        return;
    }
    // Detach
    layout.removeComponent(comp);
    if (idx > 0 && idx > oldIdx) {
        idx--;
    }
    // Increase index if component is dropped after or above a previous
    // component
    VerticalDropLocation loc = details.getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }
    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }
    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }
}