Class BufferChangedEvent

  • All Implemented Interfaces:
    Serializable

    public class BufferChangedEvent
    extends EventObject
    A buffer changed event describes how a buffer has changed. These events are used in IBufferChangedListener notifications.

    For text insertions, getOffset is the offset of the first inserted character, getText is the inserted text, and getLength is 0.

    For text removals, getOffset is the offset of the first removed character, getText is null, and getLength is the length of the text that was removed.

    For replacements (including IBuffer.setContents), getOffset is the offset of the first replaced character, getText is the replacement text, and getLength is the length of the original text that was replaced.

    When a buffer is closed, getOffset is 0, getLength is 0, and getText is null.

    See Also:
    IBuffer, Serialized Form
    Restriction:
    This class is not intended to be subclassed by clients.
    • Constructor Detail

      • BufferChangedEvent

        public BufferChangedEvent​(IBuffer buffer,
                                  int offset,
                                  int length,
                                  String text)
        Creates a new buffer changed event indicating that the given buffer has changed.
        Parameters:
        buffer - the given buffer
        offset - the given offset
        length - the given length
        text - the given text
    • Method Detail

      • getBuffer

        public IBuffer getBuffer()
        Returns the buffer which has changed.
        Returns:
        the buffer affected by the change
      • getLength

        public int getLength()
        Returns the length of text removed or replaced in the buffer, or 0 if text has been inserted into the buffer.
        Returns:
        the length of the original text fragment modified by the buffer change ( 0 in case of insertion).
      • getOffset

        public int getOffset()
        Returns the index of the first character inserted, removed, or replaced in the buffer.
        Returns:
        the source offset of the textual manipulation in the buffer
      • getText

        public String getText()
        Returns the text that was inserted, the replacement text, or null if text has been removed.
        Returns:
        the text corresponding to the buffer change ( null in case of deletion).