public class TextBufferCommand extends Command
Constructor and Description |
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TextBufferCommand(java.lang.String name,
TextBuffer buffer)
Creates a text transform command.
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Modifier and Type | Method and Description |
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int |
doit()
Executes the actions associated with a specific command.
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void |
insert(int offset,
char[] text)
Inserts text into the buffer.
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void |
insert(int offset,
java.lang.String text)
Inserts text into the buffer.
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void |
remove(int offset,
int length)
Removes text from the buffer.
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int |
undo()
Called by the CommandProcessor to undo a command.
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enableConfirmation, getAffectedNodes, getContext, getData, getId, getName, getProgressHandle, getType, isGlobal, setContext, setData, setTaskInfo
public TextBufferCommand(java.lang.String name, TextBuffer buffer)
name
- The name of the command.buffer
- The buffer to be transformed by this command.public void insert(int offset, char[] text)
offset
- The character offset before which to insert.text
- The text to insert.public void insert(int offset, java.lang.String text)
offset
- The character offset before which to insert.text
- The text to insert.public void remove(int offset, int length)
offset
- The character offset before the first character to remove.length
- The number of characters to remove.public int doit() throws java.lang.Exception
Command
public int undo() throws java.lang.Exception
Command
doit
method was called
When a command executes successfully, implementations should
return OK, otherwise, return CANCEL or any other non-zero value.