The EditorInputTransfer class is used to transfer an
IEditorInput and corresponding editorId from one part to another
in a drag and drop operation. Only opening of internal editors is supported.
In every drag and drop operation there is a DragSource and a
DropTarget. When a drag occurs a Transfer is used
to marshall the drag data from the source into a byte array. If a drop
occurs another Transfer is used to marshall the byte array into
drop data for the target.
This class can be used for a Viewer or an SWT component directly.
A singleton is provided which may be serially reused (see getInstance).
For an implementor of IEditorInput to be supported by
EditorInputTransfer, it must provide a proper implementation of
IEditorInput.getPersistable. For further details,
consult the org.eclipse.ui.elementFactories extension point.
The data for a transfer is represented by the EditorInputData
class, and a convenience method createEditorInputData is
provided. A DragSource.dragSetData implementation
should set the data to an array of EditorInputData. In this
way, the dragging of multiple editor inputs is supported.
Below is an example of how to set the data for dragging a single editor
input using a EditorInputTransfer.
public void dragSetData(DragSourceEvent event) {
if (EditorInputTransfer.getInstance().isSupportedType(event.dataType)) {
EditorInputTransfer.EditorInputData data =
EditorInputTransfer.
createEditorInputData(EDITOR_ID, getEditorInput());
event.data = new EditorInputTransfer.EditorInputData [] {data};
}
}
See Also: org.eclipse.jface.viewers.StructuredViewer
See Also: org.eclipse.swt.dnd.DropTarget
See Also: org.eclipse.swt.dnd.DragSource
See Also: org.eclipse.ui.IEditorInput
See Also: org.eclipse.ui.IPersistableElement
See Also: org.eclipse.ui.IElementFactory |