Example usage for com.intellij.openapi.ide KillRingTransferable getStartOffset

Introduction

In this page you can find the example usage for com.intellij.openapi.ide KillRingTransferable getStartOffset.

Prototype

public int getStartOffset() 

Source Link

Usage

From source file:com.intellij.ide.CopyPasteManagerEx.java

License:Apache License

/**
 * Merges given new data with the given old one and returns merge result in case of success.
 *
 * @param newData new data to merge//from   ww w.  ja v  a  2 s .c  o m
 * @param oldData old data to merge
 * @return merge result of the given data if possible; <code>null</code> otherwise
 * @throws IOException                as defined by {@link Transferable#getTransferData(DataFlavor)}
 * @throws UnsupportedFlavorException as defined by {@link Transferable#getTransferData(DataFlavor)}
 */
@Nullable
private static Transferable merge(@NotNull KillRingTransferable newData, @NotNull KillRingTransferable oldData)
        throws IOException, UnsupportedFlavorException {
    if (!oldData.isReadyToCombine() || !newData.isReadyToCombine()) {
        return null;
    }

    Document document = newData.getDocument();
    if (document == null || document != oldData.getDocument()) {
        return null;
    }

    Object newDataText = newData.getTransferData(DataFlavor.stringFlavor);
    Object oldDataText = oldData.getTransferData(DataFlavor.stringFlavor);
    if (newDataText == null || oldDataText == null) {
        return null;
    }

    if (oldData.isCut()) {
        if (newData.getStartOffset() == oldData.getStartOffset()) {
            return new KillRingTransferable(oldDataText.toString() + newDataText, document,
                    oldData.getStartOffset(), newData.getEndOffset(), newData.isCut());
        }
    }

    if (newData.getStartOffset() == oldData.getEndOffset()) {
        return new KillRingTransferable(oldDataText.toString() + newDataText, document,
                oldData.getStartOffset(), newData.getEndOffset(), false);
    }

    if (newData.getEndOffset() == oldData.getStartOffset()) {
        return new KillRingTransferable(newDataText.toString() + oldDataText, document,
                newData.getStartOffset(), oldData.getEndOffset(), false);
    }

    return null;
}

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