AOO410/main/accessibility/bridge/org/openoffice/java/accessibility/ScrollBar.java

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



package org.openoffice.java.accessibility;

import javax.accessibility.AccessibleState;
import javax.accessibility.AccessibleStateSet;
import javax.swing.SwingConstants;

import com.sun.star.uno.*;
import com.sun.star.accessibility.*;

/** 
 */
public class ScrollBar extends Component implements SwingConstants, javax.accessibility.Accessible {
    
    public ScrollBar(XAccessible xAccessible, XAccessibleContext xAccessibleContext) {
        super(xAccessible, xAccessibleContext);
    }
    
    /** Creates the AccessibleContext associated with this object */
    public javax.accessibility.AccessibleContext createAccessibleContext() {
        return new AccessibleScrollBar();
    }
    
    protected class AccessibleScrollBar extends AccessibleUNOComponent implements 
        javax.accessibility.AccessibleAction { 
        
        protected XAccessibleAction unoAccessibleAction;
        protected int actionCount = 0;
        
        /**
        * Though the class is abstract, this should be called by all sub-classes
        */
        protected AccessibleScrollBar() {
            super();
            unoAccessibleAction = (XAccessibleAction) UnoRuntime.queryInterface(
                XAccessibleAction.class, unoAccessibleContext);
            if (unoAccessibleAction != null) {
                actionCount = unoAccessibleAction.getAccessibleActionCount();
            }
        }
        
        /*
        * AccessibleContext
        */
        
        /** Gets the role of this object */
        public javax.accessibility.AccessibleRole getAccessibleRole() {
            return javax.accessibility.AccessibleRole.SCROLL_BAR;
        }
        
        /** Gets the AccessibleValue associated with this object that has a graphical representation */
        public javax.accessibility.AccessibleValue getAccessibleValue() {
            try {
                XAccessibleValue unoAccessibleValue = (XAccessibleValue)
                    UnoRuntime.queryInterface(XAccessibleValue.class, unoAccessibleContext);
                return (unoAccessibleValue != null) ? 
                    new AccessibleValueImpl(unoAccessibleValue) : null;
            } catch (com.sun.star.uno.RuntimeException e) {
                return null;
            }
        }
        
        /** Gets the AccessibleAction associated with this object that supports one or more actions */
        public javax.accessibility.AccessibleAction getAccessibleAction() {
            return this;
        }
        
        /*
        * AccessibleAction
        */
        
        /** Performs the specified Action on the object */
        public boolean doAccessibleAction(int param) {
            if (param < actionCount) {
                try {
                    return unoAccessibleAction.doAccessibleAction(param);
                } catch(com.sun.star.lang.IndexOutOfBoundsException e) {
                }
            }
            return false;
        }
        
        /** Returns a description of the specified action of the object */
        public java.lang.String getAccessibleActionDescription(int param) {
            if(param < actionCount) {
                try {
                    return unoAccessibleAction.getAccessibleActionDescription(param);
                } catch(com.sun.star.lang.IndexOutOfBoundsException e) {
                }
            }
            return null;
        }
        
        /** Returns the number of accessible actions available in this object */
        public int getAccessibleActionCount() {
            return actionCount;
        }
    }
}