cn.mapway.ui.client.widget.common.DragImage Maven / Gradle / Ivy

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package cn.mapway.ui.client.widget.common;

import com.google.gwt.core.shared.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.event.dom.client.DragEvent;
import com.google.gwt.event.dom.client.DragHandler;
import com.google.gwt.event.dom.client.DragStartEvent;
import com.google.gwt.event.dom.client.DragStartHandler;
import com.google.gwt.user.client.ui.Image;

/**
 * The type Drag image.
 */
public class DragImage extends Image implements DragStartHandler, DragHandler {
    /**
     * Instantiates a new Drag image.
     */
    public DragImage() {
        initDnd();
    }

    private void initDnd() {
        getElement().setDraggable(Element.DRAGGABLE_TRUE);
        addDragStartHandler(this);
    }

    @Override
    public void onDrag(DragEvent event) {
        NativeEvent e = event.getNativeEvent();
        GWT.log("drag " + e.getClientX() + "," + e.getClientY());

    }

    @Override
    public void onDragStart(DragStartEvent event) {

    }

}