org.rstudio.core.client.widget.FocusTracker.java Source code

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Here is the source code for org.rstudio.core.client.widget.FocusTracker.java

Source

/*
 * FocusTracker.java
 *
 * Copyright (C) 2009-12 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */
package org.rstudio.core.client.widget;

import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.dom.client.HasAllFocusHandlers;

public class FocusTracker {
    public FocusTracker(final HasAllFocusHandlers widget) {
        isFocused_ = false;

        widget.addFocusHandler(new FocusHandler() {
            @Override
            public void onFocus(FocusEvent event) {
                isFocused_ = true;
            }
        });

        widget.addBlurHandler(new BlurHandler() {
            @Override
            public void onBlur(BlurEvent event) {
                isFocused_ = false;
            }
        });
    }

    public boolean isFocused() {
        return isFocused_;
    }

    private boolean isFocused_;
}