Example usage for javax.swing TransferHandler importData

Introduction

In this page you can find the example usage for javax.swing TransferHandler importData.

Prototype

public boolean importData(TransferSupport support) 

Source Link

Document

Causes a transfer to occur from a clipboard or a drag and drop operation.

Usage

From source file:pl.otros.logview.gui.Log4jPatternParserEditor.java

private void enableDragAndDrop() {
    logFileContent.setDragEnabled(true);
    final TransferHandler defaultTransferHandler = logFileContent.getTransferHandler();
    TransferHandler transferHandler = new TransferHandler() {

        @Override//from  w w w. j  a  v  a2 s . c o  m
        public boolean importData(TransferSupport support) {
            if (isText(support)) {
                try {
                    String transferData = (String) support.getTransferable()
                            .getTransferData(DataFlavor.stringFlavor);
                    if (transferData.startsWith("file://")) {
                        String firstLine = transferData;
                        if (firstLine.indexOf('\n') > 0) {
                            firstLine = firstLine.substring(0, firstLine.indexOf('\n') - 1);
                        }
                        loadLogContent(VFS.getManager().resolveFile(firstLine));
                    } else {
                        defaultTransferHandler.importData(support);
                    }
                    return true;

                } catch (UnsupportedFlavorException e) {
                    LOGGER.warning("Can't import data, UnsupportedFlavorException: " + e.getMessage());
                } catch (IOException e) {
                    LOGGER.warning("Can't import data, IOException: " + e.getMessage());
                }
            }

            if (isListOfFiles(support)) {
                try {
                    List data = (List) support.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);
                    if (data.size() > 0) {
                        File file = (File) data.get(0);
                        loadLogContent(VFS.getManager().resolveFile(file.getAbsolutePath()));
                        return true;
                    }
                } catch (UnsupportedFlavorException e) {
                    LOGGER.warning("Can't import data, UnsupportedFlavorException: " + e.getMessage());
                } catch (IOException e) {
                    LOGGER.warning("Can't import data, IOException: " + e.getMessage());
                }
            }

            return defaultTransferHandler.importData(support);
        }

        @Override
        public boolean canImport(TransferSupport support) {
            if (isText(support) || isListOfFiles(support)) {
                return true;
            }
            return defaultTransferHandler.canImport(support);
        }

        private boolean isListOfFiles(TransferSupport support) {
            return support.isDataFlavorSupported(DataFlavor.javaFileListFlavor);
        }

        private boolean isText(TransferSupport support) {
            return DataFlavor.selectBestTextFlavor(support.getDataFlavors()) != null;
        }

    };
    logFileContent.setTransferHandler(transferHandler);
    loadLog.setTransferHandler(transferHandler);
    logFileContentLabel.setTransferHandler(transferHandler);
}

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