001    /*
002     * Copyright 2006 Google Inc.
003     * 
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not
005     * use this file except in compliance with the License. You may obtain a copy of
006     * the License at
007     * 
008     * http://www.apache.org/licenses/LICENSE-2.0
009     * 
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
012     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
013     * License for the specific language governing permissions and limitations under
014     * the License.
015     */
016    package com.google.gwt.user.client.ui.impl;
017    
018    import com.google.gwt.user.client.Element;
019    
020    /**
021     * Implementation interface for creating and manipulating focusable elements
022     * that aren't naturally focusable in all browsers, such as DIVs.
023     */
024    public class FocusImpl {
025    
026      public native void blur(Element elem) /*-{
027        elem.blur();
028      }-*/;
029    
030      public native Element createFocusable() /*-{
031        var e = $doc.createElement("DIV");
032        e.tabIndex = 0;
033        return e;
034      }-*/;
035    
036      public native void focus(Element elem) /*-{
037        elem.focus();
038      }-*/;
039    
040      public native int getTabIndex(Element elem) /*-{
041        return elem.tabIndex;
042      }-*/;
043    
044      public native void setAccessKey(Element elem, char key) /*-{
045        elem.accessKey = key;
046      }-*/;
047    
048      public native void setTabIndex(Element elem, int index) /*-{
049        elem.tabIndex = index;
050      }-*/;
051    }