/* * Copyright 2015 John Ahlroos * * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the License * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express * or implied. See the License for the specific language governing permissions and limitations under * the License. */ package com.haulmont.cuba.web.widgets.addons.dragdroplayouts.drophandlers; import com.vaadin.event.dd.DragAndDropEvent; import com.vaadin.event.dd.acceptcriteria.AcceptCriterion; import com.vaadin.event.dd.acceptcriteria.Not; import com.vaadin.shared.ui.dd.VerticalDropLocation; import com.vaadin.ui.Component; import com.vaadin.ui.ComponentContainer; import com.vaadin.ui.SingleComponentContainer; import com.vaadin.ui.VerticalSplitPanel; import com.haulmont.cuba.web.widgets.addons.dragdroplayouts.DDVerticalSplitPanel; import com.haulmont.cuba.web.widgets.addons.dragdroplayouts.DDVerticalSplitPanel.VerticalSplitPanelTargetDetails; import com.haulmont.cuba.web.widgets.addons.dragdroplayouts.events.LayoutBoundTransferable; import com.haulmont.cuba.web.widgets.addons.dragdroplayouts.events.VerticalLocationIs; /** * Default drop handler for vertical splitpanels * * @author John Ahlroos / www.jasoft.fi * @since 0.6.0 */ @SuppressWarnings("serial") public class DefaultVerticalSplitPanelDropHandler extends AbstractDefaultLayoutDropHandler { @Override public AcceptCriterion getAcceptCriterion() { // Only allow dropping in slots, not on the center bar return new Not(VerticalLocationIs.MIDDLE); } @Override protected void handleComponentReordering(DragAndDropEvent event) { handleDropFromLayout(event); } @Override protected void handleDropFromLayout(DragAndDropEvent event) { LayoutBoundTransferable transferable = (LayoutBoundTransferable) event .getTransferable(); VerticalSplitPanelTargetDetails details = (VerticalSplitPanelTargetDetails) event .getTargetDetails(); Component component = transferable.getComponent(); DDVerticalSplitPanel panel = (DDVerticalSplitPanel) details.getTarget(); ComponentContainer source = (ComponentContainer) transferable .getSourceComponent(); // Detach from old source if (source instanceof ComponentContainer) { ((ComponentContainer) source).removeComponent(component); } else if (source instanceof SingleComponentContainer) { ((SingleComponentContainer) source).setContent(null); } if (details.getDropLocation() == VerticalDropLocation.TOP) { // Dropped in the left area panel.setFirstComponent(component); } else if (details.getDropLocation() == VerticalDropLocation.BOTTOM) { // Dropped in the right area panel.setSecondComponent(component); } } @Override protected void handleHTML5Drop(DragAndDropEvent event) { VerticalSplitPanelTargetDetails details = (VerticalSplitPanelTargetDetails) event .getTargetDetails(); DDVerticalSplitPanel panel = (DDVerticalSplitPanel) details.getTarget(); if (details.getDropLocation() == VerticalDropLocation.TOP) { // Dropped in the left area panel.setFirstComponent(resolveComponentFromHTML5Drop(event)); } else if (details.getDropLocation() == VerticalDropLocation.BOTTOM) { // Dropped in the right area panel.setSecondComponent(resolveComponentFromHTML5Drop(event)); } } @Override public Class<VerticalSplitPanel> getTargetLayoutType() { return VerticalSplitPanel.class; } }