Example usage for javax.swing.undo UndoManager end

Introduction

In this page you can find the example usage for javax.swing.undo UndoManager end.

Prototype

public synchronized void end() 

Source Link

Document

Turns this UndoManager into a normal CompoundEdit.

Usage

From source file:UndoManagerDetails.java

public static void main(String[] args) {
    UndoManager mgr = new UndoManager();
    mgr.addEdit(new SampleUndoableEdit(1, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(2, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(3, false, false, false));
    mgr.addEdit(new SampleUndoableEdit(4, false, false, false));

    System.out.println("Insignificant edit example");
    mgr.undo();//from  www .j  a va  2 s.c  om
    mgr.redo();
    System.out.println(mgr.canRedo()); // No more sig. edits

    // Show how edits that call add/replace are used.
    //
    // # adds? sig? replace?
    mgr.addEdit(new SampleUndoableEdit(5, true, true, false));
    mgr.addEdit(new SampleUndoableEdit(6, false, true, false));
    System.out.println("Absorbed (by addEdit) edit example");
    mgr.undo();
    mgr.discardAllEdits();

    // # adds? sig? replace?
    mgr.addEdit(new SampleUndoableEdit(1, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(2, false, true, true));
    System.out.println("Absorbed (by replaceEdit) edit example");
    mgr.undo();
    System.out.println(mgr.canUndo());

    // Show how changing limit works.
    mgr.discardAllEdits();

    // # adds? sig? replace?
    mgr.addEdit(new SampleUndoableEdit(1, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(2, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(3, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(4, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(5, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(6, false, true, false));
    System.out.println("Changing limit example");
    mgr.undo();
    mgr.undo();
    mgr.undo(); // Now 3 undoable, 3 redoable
    mgr.setLimit(4); // Now 2 undoable, 2 redoable!
    while (mgr.canUndo())
        mgr.undo();
    while (mgr.canRedo())
        mgr.redo();

    // undoOrRedo example
    mgr.discardAllEdits();
    mgr.setLimit(1);

    // # adds? sig? replace?
    mgr.addEdit(new SampleUndoableEdit(1, false, true, false));
    System.out.println("undoOrRedo example");
    System.out.println(mgr.getUndoOrRedoPresentationName());
    mgr.undoOrRedo();
    System.out.println(mgr.getUndoOrRedoPresentationName());
    mgr.undoOrRedo();

    // Show how UndoManager becomes a CompositeEdit.
    mgr.discardAllEdits();
    mgr.setLimit(100);

    // # adds? sig? replace?
    mgr.addEdit(new SampleUndoableEdit(1, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(2, false, true, false));
    mgr.addEdit(new SampleUndoableEdit(3, false, true, false));
    System.out.println("Transform to composite example");
    mgr.end();
    mgr.undo();
    mgr.redo();

    // Show that adds are no longer allowed. Note that addEdit() returns true in
    // pre-JDK 1.2 Swing releases. This is fixed in JDK 1.2.
    System.out.println(mgr.addEdit(new SampleUndoableEdit(4, false, true, false)));
    mgr.undo(); // note that edit 4 is not there
}

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