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| | | /*
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| | | * Copyright 2012 gitblit.com.
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| | | *
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| | | * Licensed under the Apache License, Version 2.0 (the "License");
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| | | * you may not use this file except in compliance with the License.
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| | | * You may obtain a copy of the License at
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| | | *
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| | | * http://www.apache.org/licenses/LICENSE-2.0
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| | | *
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| | | * Unless required by applicable law or agreed to in writing, software
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| | | * distributed under the License is distributed on an "AS IS" BASIS,
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| | | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| | | * See the License for the specific language governing permissions and
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| | | * limitations under the License.
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| | | */
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| | | package com.gitblit.authority;
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| | | import javax.swing.JComponent;
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| | | import javax.swing.event.AncestorEvent;
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| | | import javax.swing.event.AncestorListener;
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| | |
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| | | /**
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| | | * Convenience class to request focus on a component.
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| | | *
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| | | * When the component is added to a realized Window then component will
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| | | * request focus immediately, since the ancestorAdded event is fired
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| | | * immediately.
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| | | *
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| | | * When the component is added to a non realized Window, then the focus
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| | | * request will be made once the window is realized, since the
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| | | * ancestorAdded event will not be fired until then.
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| | | *
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| | | * Using the default constructor will cause the listener to be removed
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| | | * from the component once the AncestorEvent is generated. A second constructor
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| | | * allows you to specify a boolean value of false to prevent the
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| | | * AncestorListener from being removed when the event is generated. This will
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| | | * allow you to reuse the listener each time the event is generated.
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| | | * |
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| | | * @author Rob Camick
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| | | */
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| | | public class RequestFocusListener implements AncestorListener
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| | | {
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| | | private boolean removeListener;
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| | | /*
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| | | * Convenience constructor. The listener is only used once and then it is
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| | | * removed from the component.
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| | | */
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| | | public RequestFocusListener()
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| | | {
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| | | this(true);
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| | | }
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| | |
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| | | /*
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| | | * Constructor that controls whether this listen can be used once or
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| | | * multiple times.
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| | | *
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| | | * @param removeListener when true this listener is only invoked once
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| | | * otherwise it can be invoked multiple times.
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| | | */
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| | | public RequestFocusListener(boolean removeListener)
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| | | {
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| | | this.removeListener = removeListener;
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| | | }
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| | |
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| | | @Override
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| | | public void ancestorAdded(AncestorEvent e)
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| | | {
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| | | JComponent component = e.getComponent();
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| | | component.requestFocusInWindow();
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| | | if (removeListener)
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| | | component.removeAncestorListener( this );
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| | | }
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| | |
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| | | @Override
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| | | public void ancestorMoved(AncestorEvent e) {}
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| | |
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| | | @Override
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| | | public void ancestorRemoved(AncestorEvent e) {}
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| | | }
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