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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.event;
import java.io.Serializable;
import java.util.Collection;
import com.vaadin.ui.Component;
/**
* Transferable wraps the data that is to be imported into another component.
* Currently Transferable is only used for drag and drop.
*
* @since 6.3
*/
public interface Transferable extends Serializable {
/**
* Returns the data from Transferable by its data flavor (aka data type).
* Data types can be any string keys, but MIME types like "text/plain" are
* commonly used.
* <p>
* Note, implementations of {@link Transferable} often provide a better
* typed API for accessing data.
*
* @param dataFlavor
* the data flavor to be returned from Transferable
* @return the data stored in the Transferable or null if Transferable
* contains no data for given data flavour
*/
public Object getData(String dataFlavor);
/**
* Stores data of given data flavor to Transferable. Possibly existing value
* of the same data flavor will be replaced.
*
* @param dataFlavor
* the data flavor
* @param value
* the new value of the data flavor
*/
public void setData(String dataFlavor, Object value);
/**
* @return a collection of data flavors ( data types ) available in this
* Transferable
*/
public Collection<String> getDataFlavors();
/**
* @return the component that created the Transferable or null if the source
* component is unknown
*/
public Component getSourceComponent();
}
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