com.vaadin.client.ui.dd

Class DDUtil

java.lang.Object

com.vaadin.client.ui.dd.DDUtil

public class DDUtil
extends Object

Utility class for drag and drop handling.

Author:

Vaadin Ltd

Method Summary

Modifier and Type	Method and Description
static HorizontalDropLocation	getHorizontalDropLocation(com.google.gwt.dom.client.Element element, com.google.gwt.dom.client.NativeEvent event, double leftRightRatio) Get horizontal drop location.
static VerticalDropLocation	getVerticalDropLocation(com.google.gwt.dom.client.Element element, int offsetHeight, int clientY, double topBottomRatio) Get vertical drop location.
static VerticalDropLocation	getVerticalDropLocation(com.google.gwt.dom.client.Element element, int offsetHeight, com.google.gwt.dom.client.NativeEvent event, double topBottomRatio) Get vertical drop location.
static VerticalDropLocation	getVerticalDropLocation(com.google.gwt.dom.client.Element element, com.google.gwt.dom.client.NativeEvent event, double topBottomRatio) Get vertical drop location.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getVerticalDropLocation

public static VerticalDropLocation getVerticalDropLocation(com.google.gwt.dom.client.Element element,
                                                           com.google.gwt.dom.client.NativeEvent event,
                                                           double topBottomRatio)

Get vertical drop location.

Parameters:

element - the drop target element

event - the latest NativeEvent that relates to this drag operation

topBottomRatio - the ratio that determines how big portion of the element on each end counts for indicating desire to drop above or below the element rather than on top of it

Returns:

the drop location

getVerticalDropLocation

public static VerticalDropLocation getVerticalDropLocation(com.google.gwt.dom.client.Element element,
                                                           int offsetHeight,
                                                           com.google.gwt.dom.client.NativeEvent event,
                                                           double topBottomRatio)

Get vertical drop location.

Parameters:

element - the drop target element

offsetHeight - the height of an element relative to the layout

event - the latest NativeEvent that relates to this drag operation

topBottomRatio - the ratio that determines how big portion of the element on each end counts for indicating desire to drop above or below the element rather than on top of it

Returns:

the drop location

getVerticalDropLocation

public static VerticalDropLocation getVerticalDropLocation(com.google.gwt.dom.client.Element element,
                                                           int offsetHeight,
                                                           int clientY,
                                                           double topBottomRatio)

Get vertical drop location.

Parameters:

element - the drop target element

offsetHeight - the height of an element relative to the layout

clientY - the y-coordinate of the latest event that relates to this drag operation

topBottomRatio - the ratio that determines how big portion of the element on each end counts for indicating desire to drop above or below the element rather than on top of it

Returns:

the drop location

getHorizontalDropLocation

public static HorizontalDropLocation getHorizontalDropLocation(com.google.gwt.dom.client.Element element,
                                                               com.google.gwt.dom.client.NativeEvent event,
                                                               double leftRightRatio)

Get horizontal drop location.

Parameters:

element - the drop target element

event - the latest NativeEvent that relates to this drag operation

leftRightRatio - the ratio that determines how big portion of the element on each end counts for indicating desire to drop beside the element rather than on top of it

Returns:

the drop location