| /* |
| * Copyright 2011 Google Inc. |
| * |
| * 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.google.gwt.user.client; |
| |
| import com.google.gwt.event.dom.client.DragEndEvent; |
| import com.google.gwt.event.dom.client.DragEndHandler; |
| import com.google.gwt.event.dom.client.DragEnterEvent; |
| import com.google.gwt.event.dom.client.DragEnterHandler; |
| import com.google.gwt.event.dom.client.DragEvent; |
| import com.google.gwt.event.dom.client.DragLeaveEvent; |
| import com.google.gwt.event.dom.client.DragLeaveHandler; |
| import com.google.gwt.event.dom.client.DragHandler; |
| import com.google.gwt.event.dom.client.DragOverEvent; |
| import com.google.gwt.event.dom.client.DragOverHandler; |
| import com.google.gwt.event.dom.client.DragStartEvent; |
| import com.google.gwt.event.dom.client.DragStartHandler; |
| import com.google.gwt.event.dom.client.DropEvent; |
| import com.google.gwt.event.dom.client.DropHandler; |
| import com.google.gwt.event.dom.client.HasAllDragAndDropHandlers; |
| import com.google.gwt.junit.client.GWTTestCase; |
| import com.google.gwt.user.client.ui.Anchor; |
| import com.google.gwt.user.client.ui.FlexTable; |
| import com.google.gwt.user.client.ui.FocusPanel; |
| import com.google.gwt.user.client.ui.Grid; |
| import com.google.gwt.user.client.ui.Image; |
| import com.google.gwt.user.client.ui.Label; |
| import com.google.gwt.user.client.ui.RootPanel; |
| import com.google.gwt.user.client.ui.Widget; |
| |
| /** |
| * Test Case for sinking of drag and drop events. |
| */ |
| public class DragAndDropEventsSinkTest extends GWTTestCase { |
| |
| private static class DragEndHandlerImpl extends HandlerImpl implements DragEndHandler { |
| public void onDragEnd(DragEndEvent event) { |
| eventFired(); |
| } |
| } |
| |
| private static class DragEnterHandlerImpl extends HandlerImpl implements DragEnterHandler { |
| public void onDragEnter(DragEnterEvent event) { |
| eventFired(); |
| } |
| } |
| |
| private static class DragHandlerImpl extends HandlerImpl implements DragHandler { |
| public void onDrag(DragEvent event) { |
| eventFired(); |
| } |
| } |
| |
| private static class DragLeaveHandlerImpl extends HandlerImpl implements DragLeaveHandler { |
| public void onDragLeave(DragLeaveEvent event) { |
| eventFired(); |
| } |
| } |
| |
| private static class DragOverHandlerImpl extends HandlerImpl implements DragOverHandler { |
| public void onDragOver(DragOverEvent event) { |
| eventFired(); |
| } |
| } |
| |
| private static class DragStartHandlerImpl extends HandlerImpl implements DragStartHandler { |
| public void onDragStart(DragStartEvent event) { |
| eventFired(); |
| } |
| } |
| |
| private static class DropHandlerImpl extends HandlerImpl implements DropHandler { |
| public void onDrop(DropEvent event) { |
| eventFired(); |
| } |
| } |
| |
| private static class HandlerImpl { |
| private boolean fired = false; |
| |
| public void eventFired() { |
| fired = true; |
| } |
| |
| boolean hasEventFired() { |
| return fired; |
| } |
| } |
| |
| /** |
| * Interface to create a widget. |
| * |
| * @param <W> the widget type |
| */ |
| private interface WidgetCreator<W extends Widget & HasAllDragAndDropHandlers> { |
| /** |
| * Create a widget to test. |
| * |
| * @return the new widget |
| */ |
| W createWidget(); |
| } |
| |
| public static native boolean isEventSupported(String eventName) /*-{ |
| var div = $doc.createElement("div"); |
| return ("on" + eventName) in div; |
| }-*/; |
| |
| @Override |
| public String getModuleName() { |
| return "com.google.gwt.user.User"; |
| } |
| |
| public void testFocusPanelEventSink() { |
| // skip tests on browsers that do not support native drag events |
| if (!isEventSupported("dragstart")) { |
| return; |
| } |
| |
| verifyDragAndDropEventSink(new WidgetCreator<FocusPanel>() { |
| @Override |
| public FocusPanel createWidget() { |
| return new FocusPanel(); |
| } |
| }); |
| } |
| |
| public void testFocusWidgetEventSink() { |
| // skip tests on browsers that do not support native drag events |
| if (!isEventSupported("dragstart")) { |
| return; |
| } |
| |
| verifyDragAndDropEventSink(new WidgetCreator<Anchor>() { |
| @Override |
| public Anchor createWidget() { |
| return new Anchor(); |
| } |
| }); |
| } |
| |
| public void testHTMLTableEventSink() { |
| // skip tests on browsers that do not support native drag events |
| if (!isEventSupported("dragstart")) { |
| return; |
| } |
| |
| verifyDragAndDropEventSink(new WidgetCreator<Grid>() { |
| @Override |
| public Grid createWidget() { |
| return new Grid(); |
| } |
| }, new WidgetCreator<FlexTable>() { |
| @Override |
| public FlexTable createWidget() { |
| return new FlexTable(); |
| } |
| }); |
| } |
| |
| public void testImageEventSink() { |
| // skip tests on browsers that do not support native drag events |
| if (!isEventSupported("dragstart")) { |
| return; |
| } |
| |
| verifyDragAndDropEventSink(new WidgetCreator<Image>() { |
| @Override |
| public Image createWidget() { |
| return new Image(); |
| } |
| }); |
| } |
| |
| public void testLabelEventSink() { |
| // skip tests on browsers that do not support native drag events |
| if (!isEventSupported("dragstart")) { |
| return; |
| } |
| |
| verifyDragAndDropEventSink(new WidgetCreator<Label>() { |
| @Override |
| public Label createWidget() { |
| return new Label(); |
| } |
| }); |
| } |
| |
| @Override |
| protected void gwtTearDown() throws Exception { |
| // clean up after ourselves |
| RootPanel.get().clear(); |
| super.gwtTearDown(); |
| } |
| |
| private void verifyDragAndDropEventSink(WidgetCreator<?>... creators) { |
| for (WidgetCreator<?> creator : creators) { |
| verifyDragEventSink(creator.createWidget()); |
| verifyDragEndEventSink(creator.createWidget()); |
| verifyDragEnterEventSink(creator.createWidget()); |
| verifyDragLeaveEventSink(creator.createWidget()); |
| verifyDragOverEventSink(creator.createWidget()); |
| verifyDragStartEventSink(creator.createWidget()); |
| verifyDropEventSink(creator.createWidget()); |
| } |
| } |
| |
| private <W extends Widget & HasAllDragAndDropHandlers> void verifyDragEndEventSink(W w) { |
| DragEndHandlerImpl handler = new DragEndHandlerImpl(); |
| w.addDragEndHandler(handler); |
| |
| assertFalse(handler.hasEventFired()); |
| w.fireEvent(new DragEndEvent() { |
| }); |
| assertTrue(handler.hasEventFired()); |
| } |
| |
| private <W extends Widget & HasAllDragAndDropHandlers> void verifyDragEnterEventSink(W w) { |
| DragEnterHandlerImpl handler = new DragEnterHandlerImpl(); |
| w.addDragEnterHandler(handler); |
| |
| assertFalse(handler.hasEventFired()); |
| w.fireEvent(new DragEnterEvent() { |
| }); |
| assertTrue(handler.hasEventFired()); |
| } |
| |
| private <W extends Widget & HasAllDragAndDropHandlers> void verifyDragEventSink(W w) { |
| DragHandlerImpl handler = new DragHandlerImpl(); |
| w.addDragHandler(handler); |
| |
| assertFalse(handler.hasEventFired()); |
| w.fireEvent(new DragEvent() { |
| }); |
| assertTrue(handler.hasEventFired()); |
| } |
| |
| private <W extends Widget & HasAllDragAndDropHandlers> void verifyDragLeaveEventSink(W w) { |
| DragLeaveHandlerImpl handler = new DragLeaveHandlerImpl(); |
| w.addDragLeaveHandler(handler); |
| |
| assertFalse(handler.hasEventFired()); |
| w.fireEvent(new DragLeaveEvent() { |
| }); |
| assertTrue(handler.hasEventFired()); |
| } |
| |
| private <W extends Widget & HasAllDragAndDropHandlers> void verifyDragOverEventSink(W w) { |
| DragOverHandlerImpl handler = new DragOverHandlerImpl(); |
| w.addDragOverHandler(handler); |
| |
| assertFalse(handler.hasEventFired()); |
| w.fireEvent(new DragOverEvent() { |
| }); |
| assertTrue(handler.hasEventFired()); |
| } |
| |
| private <W extends Widget & HasAllDragAndDropHandlers> void verifyDragStartEventSink(W w) { |
| DragStartHandlerImpl handler = new DragStartHandlerImpl(); |
| w.addDragStartHandler(handler); |
| |
| assertFalse(handler.hasEventFired()); |
| w.fireEvent(new DragStartEvent() { |
| }); |
| assertTrue(handler.hasEventFired()); |
| } |
| |
| private <W extends Widget & HasAllDragAndDropHandlers> void verifyDropEventSink(W w) { |
| DropHandlerImpl handler = new DropHandlerImpl(); |
| w.addDropHandler(handler); |
| |
| assertFalse(handler.hasEventFired()); |
| w.fireEvent(new DropEvent() { |
| }); |
| assertTrue(handler.hasEventFired()); |
| } |
| } |