Java Action.removePropertyChangeListener方法代碼示例

import javax.swing.Action; //導入方法依賴的package包/類
public void attach(Action action) {
    Reference<Action> d = delegate;

    if ((d == null) || (d.get() == action)) {
        return;
    }

    Action prev = d.get();

    // reattaches to different action
    if (prev != null) {
        prev.removePropertyChangeListener(this);
    }

    this.delegate = new WeakReference<Action>(action);
    action.addPropertyChangeListener(this);
}
 

import javax.swing.Action; //導入方法依賴的package包/類
public boolean isEnabled() {
    Action a = findAction();

    if (a == null) {
        a = delegate;
    }

    // 40915 - hold last action weakly
    Action last = lastRef == null ? null : lastRef.get();

    if (a != last) {
        if (last != null) {
            last.removePropertyChangeListener(weakL);
        }

        lastRef = new WeakReference<Action>(a);
        a.addPropertyChangeListener(weakL);
    }

    return a.isEnabled();
}
 

import javax.swing.Action; //導入方法依賴的package包/類
public void editorDeactivated() {
    Action ea = getEditorAction();
    Action sa = getSystemAction();
    if (ea != null && sa != null) {
        /*        if (sa instanceof CallbackSystemAction) {
                  CallbackSystemAction csa = (CallbackSystemAction)sa;
                  if (csa.getActionPerformer() == this) {
                    csa.setActionPerformer(null);
                  }
                }
        */

        if (syncEnabling && enabledPropertySyncL != null) {
            ea.removePropertyChangeListener(enabledPropertySyncL);
        }
    }
}
 

import javax.swing.Action; //導入方法依賴的package包/類
public void clear() {
    Action a;

    Reference<Action> d = delegate;
    a = d == null ? null : d.get();

    if (a == null) {
        return;
    }

    delegate = null;

    a.removePropertyChangeListener(this);
}
 

import javax.swing.Action; //導入方法依賴的package包/類
protected void finalize() {
    Action last = lastRef == null ? null : lastRef.get();

    if (last != null) {
        last.removePropertyChangeListener(weakL);
    }
}
 

import javax.swing.Action; //導入方法依賴的package包/類
void updateState(ActionMap prev, ActionMap now, boolean fire) {
    if (key == null) {
        return;
    }

    boolean prevEnabled = false;
    if (prev != null) {
        Action prevAction = prev.get(key);
        if (prevAction != null) {
            prevEnabled = fire && prevAction.isEnabled();
            prevAction.removePropertyChangeListener(weakL);
        }
    }
    if (now != null) {
        Action nowAction = now.get(key);
        boolean nowEnabled;
        if (nowAction != null) {
            nowAction.addPropertyChangeListener(weakL);
            nowEnabled = nowAction.isEnabled();
        } else {
            nowEnabled = fallback != null && fallback.isEnabled();
        }
        PropertyChangeSupport sup = fire ? support : null;
        if (sup != null && nowEnabled != prevEnabled) {
            sup.firePropertyChange("enabled", prevEnabled, !prevEnabled); // NOI18N
        }
    }
}
 

import javax.swing.Action; //導入方法依賴的package包/類
@Override
protected synchronized void removeNotify() {
    for (Action a : actions) {
        a.removePropertyChangeListener(this);
    }
    setDelegateAction(null);
}
 

import javax.swing.Action; //導入方法依賴的package包/類
public void testStackOverFlow() throws IOException {
    InstanceContent ic = new InstanceContent();
    Lookup context = new AbstractLookup(ic);
    
    boolean clone = false;
    Action instance;
    if (clone) {
        Action a = create(Lookup.EMPTY);
        instance = ((ContextAwareAction)a).createContextAwareInstance(context);
    } else {
        instance = create(context);
    }
    
    FileObject pfo = TestSupport.createTestProject(FileUtil.createMemoryFileSystem().getRoot(), "yaya");
    FileObject pf2 = TestSupport.createTestProject(FileUtil.createMemoryFileSystem().getRoot(), "blabla");
    MockServices.setServices(TestSupport.TestProjectFactory.class);
    Project p = ProjectManager.getDefault().findProject(pfo);
    Project p2 = ProjectManager.getDefault().findProject(pf2);
    if (p instanceof TestSupport.TestProject) {
        enhanceProject((TestSupport.TestProject)p);
    }
    if (p2 instanceof TestSupport.TestProject) {
        enhanceProject((TestSupport.TestProject)p2);
    }
    
    assertNotNull("Project found", p);
    assertNotNull("Project2 found", p2);
    OpenProjects.getDefault().open(new Project[] { p }, false);

    assertFalse("Disabled1", instance.isEnabled());
    instance.addPropertyChangeListener(this);
    ic.add(p);
    assertTrue("Enabled", instance.isEnabled());
    assertEquals("One change", 1, change);
    
    
    class Q implements PropertyChangeListener {
        Action i;
        int cnt;
        
        @Override
        public void propertyChange(PropertyChangeEvent evt) {
            if ("enabled".equals(evt.getPropertyName())) {
                cnt++;
                /* What is this for? Often fails during unit tests (but tests pass).
                assertTrue("enabled in listener", i.isEnabled());
                */
            }
        }
        
    }
    Q q = new Q();
    q.i = instance;
    
    ic.remove(p);
    
    instance.removePropertyChangeListener(this);
    
    ic.add(p);
    
    instance.addPropertyChangeListener(q);
    assertTrue("Enabled", instance.isEnabled());
    assertEquals("One call", 1, q.cnt);
    
}