Package org.eclipse.handly.ui.viewer

Class ViewerDropSupport

java.lang.Object
org.eclipse.handly.ui.viewer.ViewerDropSupport
public class ViewerDropSupport extends Object
Support for dropping items into a structured viewer. This class is a wrapper around DelegatingDropAdapter.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ViewerDropSupport(org.eclipse.jface.viewers.StructuredViewer viewer)
    Creates a drop support for the given viewer.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addDropTargetListener(org.eclipse.jface.util.TransferDropTargetListener listener)
    Adds the given TransferDropTargetListener.
    protected int
    getOperations()
    Returns a bitwise OR of the supported drag and drop operation types.
    void
    setFeedbackEnabled(boolean value)
    Sets whether visible insertion feedback should be presented to the user.
    void
    start()
    Adds drop support to the viewer.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ViewerDropSupport

      public ViewerDropSupport(org.eclipse.jface.viewers.StructuredViewer viewer)
      Creates a drop support for the given viewer.
      Parameters:
      viewer - not null

  • Method Details

    • addDropTargetListener

      public void addDropTargetListener(org.eclipse.jface.util.TransferDropTargetListener listener)
      Adds the given TransferDropTargetListener.
      Parameters:
      listener - not null
      Throws:
      IllegalStateException - if already started

    • start

      public void start()
      Adds drop support to the viewer.
      Throws:
      IllegalStateException - if already started
      See Also:
      • StructuredViewer.addDropSupport(int, org.eclipse.swt.dnd.Transfer[], org.eclipse.swt.dnd.DropTargetListener)

    • setFeedbackEnabled

      public void setFeedbackEnabled(boolean value)
      Sets whether visible insertion feedback should be presented to the user. Typical insertion feedback is the horizontal insertion bar that appears between adjacent items while dragging.

      This implementation calls setFeedbackEnabled for every TransferDropTargetListener that is a ViewerDropAdapter.

      Parameters:
      value - true if visual feedback is desired, and false if not

    • getOperations

      protected int getOperations()
      Returns a bitwise OR of the supported drag and drop operation types.

      Default implementation returns DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK | DND.DROP_DEFAULT.

      Returns:
      a bitwise OR of the supported drag and drop operation types