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Merge pull request #5612 from hitch17/dnd-deck-lists

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Ability to drag-and-drop decklists onto DeckEditorPanel in deck editor.
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Oleg Agafonov 2019-03-08 01:03:07 +01:00 • committed by GitHub
commit e08fe53672
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2 changed files with 146 additions and 18 deletions
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Mage/src/main/java/mage/cards/decks/DnDDeckTargetListener.java Normal file
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package mage.cards.decks;
import javax.swing.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.dnd.DropTargetAdapter;
import java.awt.dnd.DropTargetDragEvent;
import java.awt.dnd.DropTargetDropEvent;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
public class DnDDeckTargetListener extends DropTargetAdapter {
private static final DataFlavor fileFlavor = DataFlavor.javaFileListFlavor;
private static final DataFlavor plainTextFlavor = DataFlavor.stringFlavor;
private boolean isCopyOrMove(int dropAction) {
return (dropAction & TransferHandler.COPY_OR_MOVE) != 0;
}
private boolean isCopyAction(int dropAction) {
return (dropAction & TransferHandler.COPY) != 0;
}
private boolean isMoveAction(int dropAction) {
return (dropAction & TransferHandler.MOVE) != 0;
}
private boolean isAcceptable(DropTargetDragEvent dtde) {
boolean copyOrMove = isCopyOrMove(dtde.getDropAction());
boolean flavorSupported = dtde.isDataFlavorSupported(plainTextFlavor) || dtde.isDataFlavorSupported(fileFlavor);
return copyOrMove && flavorSupported;
}
@Override
public void dragEnter(DropTargetDragEvent dtde) {
if (isAcceptable(dtde)) {
dtde.acceptDrag(TransferHandler.COPY);
} else {
dtde.rejectDrag();
}
}
@Override
public void dragOver(DropTargetDragEvent dtde) {
if (isAcceptable(dtde)) {
dtde.acceptDrag(TransferHandler.COPY);
} else {
dtde.rejectDrag();
}
}
@Override
public void dropActionChanged(DropTargetDragEvent dtde) {
if (isAcceptable(dtde)) {
dtde.acceptDrag(TransferHandler.COPY);
} else {
dtde.rejectDrag();
}
}
@Override
public void drop(DropTargetDropEvent dtde) {
if (isCopyOrMove(dtde.getDropAction()) && dtde.isDataFlavorSupported(fileFlavor)) {
dtde.acceptDrop(TransferHandler.COPY);
} else if (isCopyOrMove(dtde.getDropAction()) && dtde.isDataFlavorSupported(plainTextFlavor)) {
dtde.acceptDrop(TransferHandler.COPY);
} else {
dtde.rejectDrop();
dtde.dropComplete(false);
return;
}
boolean move = isMoveAction(dtde.getDropAction());
try {
if (dtde.isDataFlavorSupported(fileFlavor)) {
List<File> files = (List<File>) dtde.getTransferable().getTransferData(fileFlavor);
dtde.dropComplete(handleFilesDrop(move, files));
} else if (dtde.isDataFlavorSupported(plainTextFlavor)) {
String text = (String) dtde.getTransferable().getTransferData(plainTextFlavor);
try {
dtde.dropComplete(handleUriDrop(move, new URI(text)));
} catch (URISyntaxException e) {
dtde.dropComplete(handlePlainTextDrop(move, text));
}
}
} catch (UnsupportedFlavorException | IOException e) {
e.printStackTrace();
dtde.dropComplete(false);
}
}
protected boolean handlePlainTextDrop(boolean move, String text) {
return false;
}
protected boolean handleUriDrop(boolean move, URI uri) {
return false;
}
protected boolean handleFilesDrop(boolean move, List<File> files) {
return false;
}
}