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/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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.vaadin.tests.dnd;
import java.util.ArrayList;
import java.util.List;
import com.vaadin.annotations.Theme;
import com.vaadin.annotations.Widgetset;
import com.vaadin.server.Page;
import com.vaadin.server.VaadinRequest;
import com.vaadin.shared.ui.dnd.DropEffect;
import com.vaadin.shared.ui.dnd.EffectAllowed;
import com.vaadin.shared.ui.dnd.criteria.ComparisonOperator;
import com.vaadin.tests.components.AbstractTestUIWithLog;
import com.vaadin.ui.CheckBox;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.NativeSelect;
import com.vaadin.ui.dnd.DragSourceExtension;
import com.vaadin.ui.dnd.DropTargetExtension;
@Theme("valo")
@Widgetset("com.vaadin.DefaultWidgetSet")
public class DragAndDropCardShuffle extends AbstractTestUIWithLog {
// Create cards
private final Label ace = new Label("A");
private final Label jack = new Label("J");
private final Label queen = new Label("Q");
private final Label king = new Label("K");
// Create desk
private HorizontalLayout desk = new HorizontalLayout();
private final List<DragSourceExtension<Label>> sources = new ArrayList<>();
private final List<DropTargetExtension<Label>> targets = new ArrayList<>();
@Override
protected void setup(VaadinRequest request) {
NativeSelect<EffectAllowed> effectAllowed = new NativeSelect<>(
"Effect Allowed (source)");
effectAllowed.setItems(EffectAllowed.values());
effectAllowed.setValue(EffectAllowed.UNINITIALIZED);
effectAllowed.setEmptySelectionAllowed(false);
effectAllowed.addValueChangeListener(event -> sources
.forEach(source -> source.setEffectAllowed(event.getValue())));
NativeSelect<DropEffect> dropEffect = new NativeSelect<>(
"Drop Effect (target)");
dropEffect.setItems(DropEffect.values());
dropEffect.addValueChangeListener(event -> targets
.forEach(target -> target.setDropEffect(event.getValue())));
CheckBox enableMobileSupport = new CheckBox("Mobile Support", false);
enableMobileSupport.addValueChangeListener(event -> {
setMobileHtml5DndEnabled(event.getValue());
removeExtensions();
setupExtensions();
});
setupExtensions();
desk.addComponents(ace, jack, queen, king);
addComponents(new HorizontalLayout(effectAllowed, dropEffect,
enableMobileSupport), desk);
// Add styling
setStyle();
}
private void setupExtensions() {
// Create UI and add extensions
ace.setStyleName("card");
addDragSourceExtension(ace, 14);
addDropTargetExtension(ace, 14);
jack.setStyleName("card");
addDragSourceExtension(jack, 11);
addDropTargetExtension(jack, 11);
queen.setStyleName("card");
addDragSourceExtension(queen, 12);
addDropTargetExtension(queen, 12);
king.setStyleName("card");
addDragSourceExtension(king, 13);
addDropTargetExtension(king, 13);
}
private void removeExtensions() {
ace.removeExtension(ace.getExtensions().iterator().next());
ace.removeExtension(ace.getExtensions().iterator().next());
jack.removeExtension(jack.getExtensions().iterator().next());
jack.removeExtension(jack.getExtensions().iterator().next());
queen.removeExtension(queen.getExtensions().iterator().next());
queen.removeExtension(queen.getExtensions().iterator().next());
king.removeExtension(king.getExtensions().iterator().next());
king.removeExtension(king.getExtensions().iterator().next());
}
private void addDragSourceExtension(Label source, int cardValue) {
// Create and attach extension
DragSourceExtension<Label> dragSource = new DragSourceExtension<>(
source);
// Set card value via criteria API for acceptance criteria
dragSource.setPayload("card_value", cardValue);
// Add listeners
dragSource.addDragStartListener(e -> log(
e.getComponent().getValue() + " dragstart, effectsAllowed="
+ e.getEffectAllowed()));
dragSource.addDragEndListener(e -> log(e.getComponent().getValue()
+ " dragend, dropEffect=" + e.getDropEffect()));
sources.add(dragSource);
}
private void addDropTargetExtension(Label target, int cardValue) {
// Create and attach extension
DropTargetExtension<Label> dropTarget = new DropTargetExtension<>(
target);
// Cards can be dropped onto others with smaller value
dropTarget.setDropCriterion("card_value",
ComparisonOperator.SMALLER_THAN, cardValue);
// Add listener
dropTarget.addDropListener(event -> event.getDragSourceExtension()
.ifPresent(dragSource -> {
if (dragSource.getParent() instanceof Label) {
Label source = (Label) dragSource.getParent();
// Swap source and target components
desk.replaceComponent(target, source);
log(event.getComponent().getValue() + " drop received "
+ source.getValue() + ", dropEffect="
+ event.getDropEffect() + ", mouseEventDetails="
+ event.getMouseEventDetails());
} else {
log(event.getComponent().getValue()
+ " drop received something else than card");
}
}));
targets.add(dropTarget);
}
private void setStyle() {
Page.Styles styles = Page.getCurrent().getStyles();
styles.add(".card {" + "width: 150px;" + "height: 200px;"
+ "border: 1px solid black;" + "border-radius: 7px;"
+ "padding-left: 10px;" + "color: red;" + "font-weight: bolder;"
+ "font-size: 25px;" + "background-color: gainsboro;" + "}");
styles.add(".v-label-drag-center {border-style: dashed;}");
styles.add(".v-label-dragged {opacity: .4;}");
}
@Override
protected String getTestDescription() {
return "Shuffle cards with pure HTML5 drag and drop";
}
}
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