Example usage for java.awt.dnd DropTargetDragEvent isDataFlavorSupported

Introduction

In this page you can find the example usage for java.awt.dnd DropTargetDragEvent isDataFlavorSupported.

Prototype

public boolean isDataFlavorSupported(DataFlavor df) 

Source Link

Document

This method returns a boolean indicating if the specified DataFlavor is supported.

Usage

From source file:de.tor.tribes.ui.windows.TribeTribeAttackFrame.java

@Override
public void dragEnter(DropTargetDragEvent dtde) {
    if (dtde.isDataFlavorSupported(VillageTransferable.villageDataFlavor)
            || dtde.isDataFlavorSupported(DataFlavor.stringFlavor)) {
        if (dtde.getDropTargetContext().getComponent() == jSourcesTable
                || dtde.getDropTargetContext().getComponent() == jVictimTable) {
            dtde.acceptDrag(DnDConstants.ACTION_COPY_OR_MOVE);
        } else {//from  w w w .j av a2  s . co  m
            dtde.rejectDrag();
        }
    } else {
        dtde.rejectDrag();
    }
}

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From source file:org.jets3t.apps.cockpitlite.CockpitLite.java

/**
 * Initialise the application's File drop targets for drag and drop copying of local files
 * to S3.//from   w ww .j a  v  a 2  s  . c om
 *
 * @param dropTargetComponents
 * the components files can be dropped on to transfer them to S3
 */
private void initDropTarget(JComponent[] dropTargetComponents) {
    DropTargetListener dropTargetListener = new DropTargetListener() {

        private boolean checkValidDrag(DropTargetDragEvent dtde) {
            if (dtde.isDataFlavorSupported(DataFlavor.javaFileListFlavor)
                    && (DnDConstants.ACTION_COPY == dtde.getDropAction()
                            || DnDConstants.ACTION_MOVE == dtde.getDropAction())) {
                dtde.acceptDrag(dtde.getDropAction());
                return true;
            } else {
                dtde.rejectDrag();
                return false;
            }
        }

        public void dragEnter(DropTargetDragEvent dtde) {
            if (checkValidDrag(dtde)) {
                SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                        objectsTable.requestFocusInWindow();
                    };
                });
            }
        }

        public void dragOver(DropTargetDragEvent dtde) {
            checkValidDrag(dtde);
        }

        public void dropActionChanged(DropTargetDragEvent dtde) {
            if (checkValidDrag(dtde)) {
                SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                        objectsTable.requestFocusInWindow();
                    };
                });
            } else {
                SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                        ownerFrame.requestFocusInWindow();
                    };
                });
            }
        }

        public void dragExit(DropTargetEvent dte) {
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    ownerFrame.requestFocusInWindow();
                };
            });
        }

        public void drop(DropTargetDropEvent dtde) {
            if (dtde.isDataFlavorSupported(DataFlavor.javaFileListFlavor)
                    && (DnDConstants.ACTION_COPY == dtde.getDropAction()
                            || DnDConstants.ACTION_MOVE == dtde.getDropAction())) {
                dtde.acceptDrop(dtde.getDropAction());
                try {
                    final List fileList = (List) dtde.getTransferable()
                            .getTransferData(DataFlavor.javaFileListFlavor);
                    if (fileList != null && fileList.size() > 0) {
                        new Thread() {
                            @Override
                            public void run() {
                                prepareForFilesUpload((File[]) fileList.toArray(new File[fileList.size()]));
                            }
                        }.start();
                    }
                } catch (Exception e) {
                    String message = "Unable to start accept dropped item(s)";
                    log.error(message, e);
                    ErrorDialog.showDialog(ownerFrame, null, cockpitLiteProperties.getProperties(), message, e);
                }
            } else {
                dtde.rejectDrop();
            }
        }
    };

    // Attach drop target listener to each target component.
    for (int i = 0; i < dropTargetComponents.length; i++) {
        new DropTarget(dropTargetComponents[i], DnDConstants.ACTION_COPY, dropTargetListener, true);
    }
}

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