Java Document.removeUndoableEditListener方法代碼示例

import javax.swing.text.Document; //導入方法依賴的package包/類
/**
 * Sets the document used by this text area.
 *
 * @param document The new document to use.
 * @throws IllegalArgumentException If the document is not an instance of
 *         {@link RDocument}.
 */
@Override
public void setDocument(Document document) {
	if (!(document instanceof RDocument)) {
		throw new IllegalArgumentException("RTextArea requires " +
			"instances of RDocument for its document");
	}
	if (undoManager!=null) { // First time through, undoManager==null
		Document old = getDocument();
		if (old!=null) {
			old.removeUndoableEditListener(undoManager);
		}
	}
	super.setDocument(document);
	if (undoManager!=null) {
		document.addUndoableEditListener(undoManager);
		discardAllEdits();
	}
}
 

import javax.swing.text.Document; //導入方法依賴的package包/類
public void testSourceEditSyncUndo() throws Exception {
    defaultSetup();
    UndoManager urListener = new UndoManager();
    Document doc = mModel.getBaseDocument();
    mModel.addUndoableEditListener(urListener);
    
    mModel.startTransaction();
    B b2 = new B(mModel, 2);
    mModel.getRootComponent().addAfter(b2.getName(), b2, TestComponent3._A);
    mModel.endTransaction();
    assertEquals("first edit setup", 2, mModel.getRootComponent().getChildren(B.class).size());
    
    // see fix for issue 83963, with this fix we need coordinate edits from
    // on XDM model and on document buffer.  This reduce XDM undo/redo efficiency,
    // but is the best we can have to satisfy fine-grained text edit undo requirements.
    mModel.removeUndoableEditListener(urListener);
    doc.addUndoableEditListener(urListener);
    
    Util.setDocumentContentTo(doc, "resources/test2.xml");
    assertEquals("undo sync", 1, mModel.getRootComponent().getChildren(C.class).size());
    mModel.sync();
    doc.removeUndoableEditListener(urListener);
    
    assertEquals("sync setup", 1, mModel.getRootComponent().getChildren(B.class).size());
    assertEquals("sync setup", 0, mModel.getRootComponent().getChildren(C.class).size());
    
    // setDocumentContentTo did delete all, then insert, hence 2 undo's'
    urListener.undo(); urListener.undo(); 
    mModel.sync(); // the above undo's are just on document buffer, needs sync (inefficient).
    assertEquals("undo sync", 1, mModel.getRootComponent().getChildren(C.class).size());
    assertEquals("undo sync", 2, mModel.getRootComponent().getChildren(B.class).size());

    urListener.undo();
    assertEquals("undo first edit before sync", 1, mModel.getRootComponent().getChildren(B.class).size());

    urListener.redo();
    assertEquals("redo first edit", 1, mModel.getRootComponent().getChildren(C.class).size());
    assertEquals("redo first edit", 2, mModel.getRootComponent().getChildren(B.class).size());

    // needs to back track the undo's, still needs sync'
    urListener.redo(); urListener.redo();
    mModel.sync();
    assertEquals("redo to sync", 1, mModel.getRootComponent().getChildren(B.class).size());
    assertEquals("redo to sync", 0, mModel.getRootComponent().getChildren(C.class).size());
}
 

import javax.swing.text.Document; //導入方法依賴的package包/類
@Override
protected void onDispose(Document w) {
    w.removeUndoableEditListener(this);
}