/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates.
*
* 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 org.drools.workbench.screens.guided.dtable.client.editor.menu;
import java.util.Set;
import javax.annotation.PostConstruct;
import javax.enterprise.context.Dependent;
import javax.inject.Inject;
import com.ait.lienzo.client.core.event.NodeDragMoveEvent;
import com.ait.lienzo.client.core.event.NodeDragMoveHandler;
import com.ait.lienzo.client.core.shape.Group;
import com.ait.lienzo.client.core.shape.Layer;
import com.ait.lienzo.client.core.shape.Rectangle;
import com.ait.lienzo.client.core.types.Point2D;
import com.ait.lienzo.client.core.types.Transform;
import com.ait.lienzo.client.widget.DragConstraintEnforcer;
import com.ait.lienzo.client.widget.DragContext;
import com.ait.lienzo.client.widget.LienzoPanel;
import com.ait.lienzo.shared.core.types.ColorName;
import com.google.gwt.dom.client.ButtonElement;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.EventTarget;
import com.google.gwt.dom.client.LIElement;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Composite;
import org.drools.workbench.screens.guided.dtable.client.resources.i18n.GuidedDecisionTableErraiConstants;
import org.drools.workbench.screens.guided.dtable.client.widget.table.GuidedDecisionTableView;
import org.jboss.errai.ui.client.local.spi.TranslationService;
import org.jboss.errai.ui.shared.api.annotations.DataField;
import org.jboss.errai.ui.shared.api.annotations.EventHandler;
import org.jboss.errai.ui.shared.api.annotations.Templated;
import org.uberfire.ext.wires.core.grids.client.model.Bounds;
@Dependent
@Templated
public class RadarMenuViewImpl extends Composite implements RadarMenuView {
private static final int RADAR_WIDTH = 200;
private static final int RADAR_HEIGHT = 200;
private RadarMenuBuilder presenter;
private TranslationService translationService;
@DataField("radarMenuDropdown")
ButtonElement radarMenuDropdown = Document.get().createPushButtonElement();
@DataField("radarMenu")
LIElement radarMenu = Document.get().createLIElement();
@DataField("radarCanvas")
LienzoPanel radarCanvas = new LienzoPanel( RADAR_WIDTH,
RADAR_HEIGHT );
Layer radarLayer = new Layer();
private double minX;
private double maxX;
private double minY;
private double maxY;
private final Rectangle visibleBounds = new Rectangle( 0, 0 ) {
@Override
public DragConstraintEnforcer getDragConstraints() {
return new DragConstraintEnforcer() {
private Point2D start;
@Override
public void startDrag( final DragContext dragContext ) {
start = new Point2D( visibleBounds.getLocation() );
}
@Override
public boolean adjust( final Point2D dxy ) {
boolean adjusted = false;
final Point2D newPoint = new Point2D( start ).add( dxy );
if ( newPoint.getX() < minX ) {
dxy.setX( minX - start.getX() );
adjusted = true;
}
if ( newPoint.getX() + visibleBounds.getWidth() > maxX ) {
dxy.setX( maxX - start.getX() - visibleBounds.getWidth() );
adjusted = true;
}
if ( newPoint.getY() < minY ) {
dxy.setY( minY - start.getY() );
adjusted = true;
}
if ( newPoint.getY() + visibleBounds.getHeight() > maxY ) {
dxy.setY( maxY - start.getY() - visibleBounds.getHeight() );
adjusted = true;
}
return adjusted;
}
};
}
};
@Inject
public RadarMenuViewImpl( final TranslationService translationService ) {
this.translationService = translationService;
}
@PostConstruct
public void setup() {
radarCanvas.add( radarLayer );
radarMenuDropdown.setTitle( translationService.getTranslation( GuidedDecisionTableErraiConstants.RowContextMenuViewImpl_Title ) );
visibleBounds.setDraggable( true );
visibleBounds.addNodeDragMoveHandler( new NodeDragMoveHandler() {
@Override
public void onNodeDragMove( final NodeDragMoveEvent event ) {
presenter.onDragVisibleBounds( visibleBounds.getX(),
visibleBounds.getY() );
}
} );
visibleBounds.setFillColor( ColorName.GRAY );
visibleBounds.setAlpha( 0.25 );
visibleBounds.setLocation( new Point2D( ( RADAR_WIDTH - visibleBounds.getWidth() ) / 2,
( RADAR_HEIGHT - visibleBounds.getHeight() ) / 2 ) );
radarLayer.add( visibleBounds );
radarCanvas.addClickHandler( new ClickHandler() {
@Override
public void onClick( ClickEvent event ) {
if ( eventTargetsPopup( event.getNativeEvent(),
radarMenu ) ) {
event.stopPropagation();
event.preventDefault();
}
}
private boolean eventTargetsPopup( final NativeEvent event,
final Element element ) {
final EventTarget target = event.getEventTarget();
if ( Element.is( target ) ) {
return element.isOrHasChild( Element.as( target ) );
}
return false;
}
} );
}
@Override
public void init( final RadarMenuBuilder presenter ) {
this.presenter = presenter;
}
@Override
public boolean isEnabled() {
return !radarMenuDropdown.isDisabled();
}
@Override
public void setEnabled( final boolean enabled ) {
radarMenuDropdown.setDisabled( !enabled );
}
@Override
public void reset() {
radarLayer.removeAll();
}
@Override
public void setModellerBounds( final Bounds bounds ) {
this.minX = bounds.getX();
this.maxX = minX + bounds.getWidth();
this.minY = bounds.getY();
this.maxY = minY + bounds.getHeight();
this.radarLayer.getViewport().setTransform( getTransform( bounds ) );
}
@Override
public void setAvailableDecisionTables( final Set<GuidedDecisionTableView.Presenter> dtPresenters ) {
for ( GuidedDecisionTableView.Presenter dtPresenter : dtPresenters ) {
final GuidedDecisionTableView view = dtPresenter.getView();
radarLayer.add( makeDecisionTableGlyph( view ) );
}
radarLayer.batch();
}
private Transform getTransform( final Bounds bounds ) {
final Transform t = new Transform();
t.scale( (double) RADAR_WIDTH / bounds.getWidth(),
(double) RADAR_HEIGHT / bounds.getHeight() ).translate( -bounds.getX(),
-bounds.getY() );
return t;
}
private Group makeDecisionTableGlyph( final GuidedDecisionTableView view ) {
final Group g = new Group();
final Rectangle r = new Rectangle( view.getWidth(),
view.getHeight() );
r.setFillColor( ColorName.LIGHTGRAY );
r.setLocation( view.getLocation() );
g.setListening( false );
g.add( r );
return g;
}
@Override
public void setVisibleBounds( final Bounds bounds ) {
radarLayer.remove( visibleBounds );
visibleBounds.setLocation( new Point2D( bounds.getX(),
bounds.getY() ) );
visibleBounds.setHeight( bounds.getHeight() );
visibleBounds.setWidth( bounds.getWidth() );
radarLayer.add( visibleBounds );
visibleBounds.moveToTop();
radarLayer.batch();
}
@Override
public void enableDrag( final boolean enabled ) {
visibleBounds.setDraggable( enabled );
}
@SuppressWarnings("unused")
@EventHandler("radarMenuDropdown")
public void onClickRadarMenuDropdown( final ClickEvent e ) {
presenter.onClick();
}
}