test/jdk/sanity/client/lib/jemmy/src/org/netbeans/jemmy/drivers/DriverManager.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation. Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package org.netbeans.jemmy.drivers;

 import org.netbeans.jemmy.JemmyException;
 import org.netbeans.jemmy.JemmyProperties;
 import org.netbeans.jemmy.operators.ComponentOperator;

 /**
  * Manages driver set.
  */
 public class DriverManager {

     /**
      * Symbolic constant - prefix for drivers names.
      */
     public static final String DRIVER_ID = "drivers.";
     /**
      * Symbolic constant for tree drivers.
      */
     public static final String TREE_DRIVER_ID = DRIVER_ID + "tree";
     /**
      * Symbolic constant for text drivers.
      */
     public static final String TEXT_DRIVER_ID = DRIVER_ID + "text";
     /**
      * Symbolic constant for key drivers.
      */
     public static final String KEY_DRIVER_ID = DRIVER_ID + "key";
     /**
      * Symbolic constant for mouse drivers.
      */
     public static final String MOUSE_DRIVER_ID = DRIVER_ID + "mouse";
     /**
      * Symbolic constant for scroll drivers.
      */
     public static final String SCROLL_DRIVER_ID = DRIVER_ID + "scroll";
     /**
      * Symbolic constant for button drivers.
      */
     public static final String BUTTON_DRIVER_ID = DRIVER_ID + "button";
     /**
      * Symbolic constant for list drivers.
      */
     public static final String LIST_DRIVER_ID = DRIVER_ID + "list";
     /**
      * Symbolic constant for multiselection list drivers.
      */
     public static final String MULTISELLIST_DRIVER_ID = DRIVER_ID + "multisellist";
     /**
      * Symbolic constant for reorderable list drivers.
      */
     public static final String ORDEREDLIST_DRIVER_ID = DRIVER_ID + "orderedlist";
     /**
      * Symbolic constant for table drivers.
      */
     public static final String TABLE_DRIVER_ID = DRIVER_ID + "table";
     /**
      * Symbolic constant for window drivers.
      */
     public static final String WINDOW_DRIVER_ID = DRIVER_ID + "window";
     /**
      * Symbolic constant for window drivers.
      */
     public static final String FRAME_DRIVER_ID = DRIVER_ID + "frame";
     /**
      * Symbolic constant for window drivers.
      */
     public static final String INTERNAL_FRAME_DRIVER_ID = DRIVER_ID + "internal_frame";
     /**
      * Symbolic constant for frame drivers.
      */
     public static final String FOCUS_DRIVER_ID = DRIVER_ID + "focus";
     /**
      * Symbolic constant for menu drivers.
      */
     public static final String MENU_DRIVER_ID = DRIVER_ID + "menu";

     //cannot be instantiated!
     private DriverManager() {
     }

     /**
      * Searches a driver.
      *
      * @param id Driver type id.
      * @param operatorClass Class to get an driver for.
      * @param props Instance to get driver from.
      * @return a driver.
      * @see #setDriver
      */
     public static Object getDriver(String id, Class<?> operatorClass, JemmyProperties props) {
         Object result = getADriver(id, operatorClass, props);
         if (result == null) {
             return getDriver(id, operatorClass);
         } else {
             return result;
         }
     }

     /**
      * Searches a driver. Uses {@code operator.getProperties()} to receive
      * JemmyProperties instance.
      *
      * @param id Driver type id.
      * @param operator Operator to get an driver for.
      * @return a driver.
      * @see #setDriver
      */
     public static Object getDriver(String id, ComponentOperator operator) {
         return getDriver(id, operator.getClass(), operator.getProperties());
     }

     /**
      * Searches a driver. Uses current JemmyProperties.
      *
      * @param id Driver type id.
      * @param operatorClass Class to get an driver for.
      * @return a driver.
      * @see #setDriver
      */
     public static Object getDriver(String id, Class<?> operatorClass) {
         Object result = getADriver(id, operatorClass, JemmyProperties.getProperties());
         if (result == null) {
             throw (new JemmyException("No \"" + id + "\" driver registered for "
                     + operatorClass.getName() + " class!"));
         } else {
             return result;
         }
     }

     /**
      * Sets driver for an operator class.
      *
      * @param id Driver type id.
      * @param driver A driver to be installed.
      * @param operatorClass Class to set driver for.
      * @see #getDriver
      */
     public static void setDriver(String id, Object driver, Class<?> operatorClass) {
         JemmyProperties.
                 setCurrentProperty(makeID(id, operatorClass), driver);
         if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
             JemmyProperties.getCurrentOutput().printLine("Installing "
                     + driver.getClass().getName()
                     + " drifer for "
                     + operatorClass.getName()
                     + " operators.");
         }
     }

     /**
      * Sets driver for an operator class name.
      *
      * @param id Driver type id.
      * @param driver A driver to be installed.
      * @param operatorClassName A name of operator class.
      * @see #getDriver
      */
     public static void setDriver(String id, Object driver, String operatorClassName) {
         JemmyProperties.
                 setCurrentProperty(makeID(id, operatorClassName), driver);
         if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
             JemmyProperties.getCurrentOutput().printLine("Installing "
                     + driver.getClass().getName()
                     + " drifer for "
                     + operatorClassName
                     + " operators.");
         }
     }

     /**
      * Sets driver for all classes supported by driver.
      *
      * @param id Driver type id.
      * @param driver A driver to be installed.
      * @see #getDriver
      */
     public static void setDriver(String id, Driver driver) {
         Class<?>[] supported = driver.getSupported();
         for (Class<?> aSupported : supported) {
             setDriver(id, driver, aSupported);
         }
     }

     /**
      * Sets driver for all classes supported by driver.
      *
      * @param id Driver type id.
      * @param driver A driver to be installed.
      * @see #getDriver
      */
     public static void setDriver(String id, LightDriver driver) {
         String[] supported = driver.getSupported();
         for (String aSupported : supported) {
             setDriver(id, driver, aSupported);
         }
     }

     /**
      * Removes driver for operator class.
      *
      * @param id Driver type to remove.
      * @param operatorClass Class to remove driver for.
      */
     public static void removeDriver(String id, Class<?> operatorClass) {
         JemmyProperties.
                 removeCurrentProperty(makeID(id, operatorClass));
         if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
             JemmyProperties.getCurrentOutput().printLine("Uninstalling a drifer for "
                     + operatorClass.getName()
                     + " operators.");
         }
     }

     /**
      * Removes driver for operator class.
      *
      * @param id Driver type to remove.
      * @param operatorClassName A name of operator class.
      */
     public static void removeDriver(String id, String operatorClassName) {
         JemmyProperties.
                 removeCurrentProperty(makeID(id, operatorClassName));
         if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
             JemmyProperties.getCurrentOutput().printLine("Uninstalling a drifer for "
                     + operatorClassName
                     + " operators.");
         }
     }

     /**
      * Removes driver for operator classes.
      *
      * @param id Driver type to remove.
      * @param operatorClasses Classes to remove driver for.
      */
     public static void removeDriver(String id, Class<?>[] operatorClasses) {
         for (Class<?> operatorClass : operatorClasses) {
             removeDriver(id, operatorClass);
         }
     }

     /**
      * Removes driver for operator classes.
      *
      * @param id Driver type to remove.
      * @param operatorClassNames Names of operator classes.
      */
     public static void removeDriver(String id, String[] operatorClassNames) {
         for (String operatorClassName : operatorClassNames) {
             removeDriver(id, operatorClassName);
         }
     }

     /**
      * Removes driver for all supported classes.
      *
      * @param id Driver type to remove.
      */
     public static void removeDrivers(String id) {
         String[] keys = JemmyProperties.getCurrentKeys();
         for (String key : keys) {
             if (key.startsWith(id)) {
                 JemmyProperties.
                         removeCurrentProperty(key);
             }
         }
     }

     /**
      * Returns {@code TREE_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setTreeDriver
      */
     public static TreeDriver getTreeDriver(Class<?> operatorClass) {
         return (TreeDriver) getDriver(TREE_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code TREE_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setTreeDriver
      */
     public static TreeDriver getTreeDriver(ComponentOperator operator) {
         return (TreeDriver) getDriver(TREE_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code TREE_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getTreeDriver
      */
     public static void setTreeDriver(TreeDriver driver) {
         setDriver(TREE_DRIVER_ID, driver);
     }

     /**
      * Returns {@code TEXT_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setTextDriver
      */
     public static TextDriver getTextDriver(Class<?> operatorClass) {
         return (TextDriver) getDriver(TEXT_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code TEXT_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setTextDriver
      */
     public static TextDriver getTextDriver(ComponentOperator operator) {
         return (TextDriver) getDriver(TEXT_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code TEXT_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getTextDriver
      */
     public static void setTextDriver(TextDriver driver) {
         setDriver(TEXT_DRIVER_ID, driver);
     }

     /**
      * Returns {@code KEY_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setKeyDriver
      */
     public static KeyDriver getKeyDriver(Class<?> operatorClass) {
         return (KeyDriver) getDriver(KEY_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code KEY_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setKeyDriver
      */
     public static KeyDriver getKeyDriver(ComponentOperator operator) {
         return (KeyDriver) getDriver(KEY_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code KEY_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getKeyDriver
      */
     public static void setKeyDriver(KeyDriver driver) {
         setDriver(KEY_DRIVER_ID, driver);
     }

     /**
      * Returns {@code MOUSE_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setMouseDriver
      */
     public static MouseDriver getMouseDriver(Class<?> operatorClass) {
         return (MouseDriver) getDriver(MOUSE_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code MOUSE_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setMouseDriver
      */
     public static MouseDriver getMouseDriver(ComponentOperator operator) {
         return (MouseDriver) getDriver(MOUSE_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code MOUSE_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getMouseDriver
      */
     public static void setMouseDriver(MouseDriver driver) {
         setDriver(MOUSE_DRIVER_ID, driver);
     }

     /**
      * Returns {@code SCROLL_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setScrollDriver
      */
     public static ScrollDriver getScrollDriver(Class<?> operatorClass) {
         return (ScrollDriver) getDriver(SCROLL_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code SCROLL_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setScrollDriver
      */
     public static ScrollDriver getScrollDriver(ComponentOperator operator) {
         return (ScrollDriver) getDriver(SCROLL_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code SCROLL_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getScrollDriver
      */
     public static void setScrollDriver(ScrollDriver driver) {
         setDriver(SCROLL_DRIVER_ID, driver);
     }

     /**
      * Returns {@code BUTTON_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setButtonDriver
      */
     public static ButtonDriver getButtonDriver(Class<?> operatorClass) {
         return (ButtonDriver) getDriver(BUTTON_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code BUTTON_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setButtonDriver
      */
     public static ButtonDriver getButtonDriver(ComponentOperator operator) {
         return (ButtonDriver) getDriver(BUTTON_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code BUTTON_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getButtonDriver
      */
     public static void setButtonDriver(ButtonDriver driver) {
         setDriver(BUTTON_DRIVER_ID, driver);
     }

     /**
      * Returns {@code LIST_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setListDriver
      */
     public static ListDriver getListDriver(Class<?> operatorClass) {
         return (ListDriver) getDriver(LIST_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code LIST_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setListDriver
      */
     public static ListDriver getListDriver(ComponentOperator operator) {
         return (ListDriver) getDriver(LIST_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code LIST_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getListDriver
      */
     public static void setListDriver(ListDriver driver) {
         setDriver(LIST_DRIVER_ID, driver);
     }

     /**
      * Returns {@code MULTISELLIST_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setMultiSelListDriver
      */
     public static MultiSelListDriver getMultiSelListDriver(Class<?> operatorClass) {
         return (MultiSelListDriver) getDriver(MULTISELLIST_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code MULTISELLIST_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setMultiSelListDriver
      */
     public static MultiSelListDriver getMultiSelListDriver(ComponentOperator operator) {
         return (MultiSelListDriver) getDriver(MULTISELLIST_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code MULTISELLIST_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getMultiSelListDriver
      */
     public static void setMultiSelListDriver(MultiSelListDriver driver) {
         setDriver(MULTISELLIST_DRIVER_ID, driver);
     }

     /**
      * Returns {@code ORDEREDLIST_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setOrderedListDriver
      */
     public static OrderedListDriver getOrderedListDriver(Class<?> operatorClass) {
         return (OrderedListDriver) getDriver(ORDEREDLIST_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code ORDEREDLIST_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setOrderedListDriver
      */
     public static OrderedListDriver getOrderedListDriver(ComponentOperator operator) {
         return (OrderedListDriver) getDriver(ORDEREDLIST_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code ORDEREDLIST_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getOrderedListDriver
      */
     public static void setOrderedListDriver(OrderedListDriver driver) {
         setDriver(ORDEREDLIST_DRIVER_ID, driver);
     }

     /**
      * Returns {@code TABLE_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setTableDriver
      */
     public static TableDriver getTableDriver(Class<?> operatorClass) {
         return (TableDriver) getDriver(TABLE_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code TABLE_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setTableDriver
      */
     public static TableDriver getTableDriver(ComponentOperator operator) {
         return (TableDriver) getDriver(TABLE_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code TABLE_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getTableDriver
      */
     public static void setTableDriver(TableDriver driver) {
         setDriver(TABLE_DRIVER_ID, driver);
     }

     /**
      * Returns {@code WINDOW_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setWindowDriver
      */
     public static WindowDriver getWindowDriver(Class<?> operatorClass) {
         return (WindowDriver) getDriver(WINDOW_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code WINDOW_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setWindowDriver
      */
     public static WindowDriver getWindowDriver(ComponentOperator operator) {
         return (WindowDriver) getDriver(WINDOW_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code WINDOW_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getWindowDriver
      */
     public static void setWindowDriver(WindowDriver driver) {
         setDriver(WINDOW_DRIVER_ID, driver);
     }

     /**
      * Returns {@code FRAME_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setFrameDriver
      */
     public static FrameDriver getFrameDriver(Class<?> operatorClass) {
         return (FrameDriver) getDriver(FRAME_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code FRAME_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setFrameDriver
      */
     public static FrameDriver getFrameDriver(ComponentOperator operator) {
         return (FrameDriver) getDriver(FRAME_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code FRAME_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getFrameDriver
      */
     public static void setFrameDriver(FrameDriver driver) {
         setDriver(FRAME_DRIVER_ID, driver);
     }

     /**
      * Returns {@code INTERNAL_FRAME_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setInternalFrameDriver
      */
     public static InternalFrameDriver getInternalFrameDriver(Class<?> operatorClass) {
         return (InternalFrameDriver) getDriver(INTERNAL_FRAME_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code INTERNAL_FRAME_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setInternalFrameDriver
      */
     public static InternalFrameDriver getInternalFrameDriver(ComponentOperator operator) {
         return (InternalFrameDriver) getDriver(INTERNAL_FRAME_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code INTERNAL_FRAME_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getInternalFrameDriver
      */
     public static void setInternalFrameDriver(InternalFrameDriver driver) {
         setDriver(INTERNAL_FRAME_DRIVER_ID, driver);
     }

     /**
      * Returns {@code FOCUS_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setFocusDriver
      */
     public static FocusDriver getFocusDriver(Class<?> operatorClass) {
         return (FocusDriver) getDriver(FOCUS_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code FOCUS_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setFocusDriver
      */
     public static FocusDriver getFocusDriver(ComponentOperator operator) {
         return (FocusDriver) getDriver(FOCUS_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code FOCUS_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getFocusDriver
      */
     public static void setFocusDriver(FocusDriver driver) {
         setDriver(FOCUS_DRIVER_ID, driver);
     }

     /**
      * Returns {@code MENU_DRIVER_ID} driver.
      *
      * @param operatorClass Class to find driver for.
      * @return a driver
      * @see #setMenuDriver
      */
     public static MenuDriver getMenuDriver(Class<?> operatorClass) {
         return (MenuDriver) getDriver(MENU_DRIVER_ID, operatorClass);
     }

     /**
      * Returns {@code MENU_DRIVER_ID} driver.
      *
      * @param operator Operator to find driver for.
      * @return a driver
      * @see #setMenuDriver
      */
     public static MenuDriver getMenuDriver(ComponentOperator operator) {
         return (MenuDriver) getDriver(MENU_DRIVER_ID, operator.getClass());
     }

     /**
      * Defines {@code MENU_DRIVER_ID} driver.
      *
      * @param driver a driver
      * @see #getMenuDriver
      */
     public static void setMenuDriver(MenuDriver driver) {
         setDriver(MENU_DRIVER_ID, driver);
     }

     static void setDriver(String id, Object driver) {
         if (driver instanceof Driver) {
             setDriver(id, (Driver) driver);
         } else if (driver instanceof LightDriver) {
             setDriver(id, (LightDriver) driver);
         } else {
             throw (new JemmyException("Driver is neither Driver nor LightDriver "
                     + driver.toString()));
         }
     }

     //creates driver id
     private static String makeID(String id, Class<?> operatorClass) {
         return makeID(id, operatorClass.getName());
     }

     private static String makeID(String id, String operatorClassName) {
         return id + "." + operatorClassName;
     }

     //returns a driver
     private static Object getADriver(String id, Class<?> operatorClass, JemmyProperties props) {
         Class<?> superClass = operatorClass;
         Object drvr;
         do {
             drvr = props.
                     getProperty(makeID(id, superClass));
             if (drvr != null) {
                 return drvr;
             }
         } while (ComponentOperator.class.
                 isAssignableFrom(superClass = superClass.getSuperclass()));
         return null;
     }

     static {
         new InputDriverInstaller().install();
         new DefaultDriverInstaller().install();
     }
 }
	/*
	* Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/
	package org.netbeans.jemmy.drivers;

	import org.netbeans.jemmy.JemmyException;
	import org.netbeans.jemmy.JemmyProperties;
	import org.netbeans.jemmy.operators.ComponentOperator;

	/**
	* Manages driver set.
	*/
	public class DriverManager {

	/**
	* Symbolic constant - prefix for drivers names.
	*/
	public static final String DRIVER_ID = "drivers.";
	/**
	* Symbolic constant for tree drivers.
	*/
	public static final String TREE_DRIVER_ID = DRIVER_ID + "tree";
	/**
	* Symbolic constant for text drivers.
	*/
	public static final String TEXT_DRIVER_ID = DRIVER_ID + "text";
	/**
	* Symbolic constant for key drivers.
	*/
	public static final String KEY_DRIVER_ID = DRIVER_ID + "key";
	/**
	* Symbolic constant for mouse drivers.
	*/
	public static final String MOUSE_DRIVER_ID = DRIVER_ID + "mouse";
	/**
	* Symbolic constant for scroll drivers.
	*/
	public static final String SCROLL_DRIVER_ID = DRIVER_ID + "scroll";
	/**
	* Symbolic constant for button drivers.
	*/
	public static final String BUTTON_DRIVER_ID = DRIVER_ID + "button";
	/**
	* Symbolic constant for list drivers.
	*/
	public static final String LIST_DRIVER_ID = DRIVER_ID + "list";
	/**
	* Symbolic constant for multiselection list drivers.
	*/
	public static final String MULTISELLIST_DRIVER_ID = DRIVER_ID + "multisellist";
	/**
	* Symbolic constant for reorderable list drivers.
	*/
	public static final String ORDEREDLIST_DRIVER_ID = DRIVER_ID + "orderedlist";
	/**
	* Symbolic constant for table drivers.
	*/
	public static final String TABLE_DRIVER_ID = DRIVER_ID + "table";
	/**
	* Symbolic constant for window drivers.
	*/
	public static final String WINDOW_DRIVER_ID = DRIVER_ID + "window";
	/**
	* Symbolic constant for window drivers.
	*/
	public static final String FRAME_DRIVER_ID = DRIVER_ID + "frame";
	/**
	* Symbolic constant for window drivers.
	*/
	public static final String INTERNAL_FRAME_DRIVER_ID = DRIVER_ID + "internal_frame";
	/**
	* Symbolic constant for frame drivers.
	*/
	public static final String FOCUS_DRIVER_ID = DRIVER_ID + "focus";
	/**
	* Symbolic constant for menu drivers.
	*/
	public static final String MENU_DRIVER_ID = DRIVER_ID + "menu";

	//cannot be instantiated!
	private DriverManager() {
	}

	/**
	* Searches a driver.
	*
	* @param id Driver type id.
	* @param operatorClass Class to get an driver for.
	* @param props Instance to get driver from.
	* @return a driver.
	* @see #setDriver
	*/
	public static Object getDriver(String id, Class<?> operatorClass, JemmyProperties props) {
	Object result = getADriver(id, operatorClass, props);
	if (result == null) {
	return getDriver(id, operatorClass);
	} else {
	return result;
	}
	}

	/**
	* Searches a driver. Uses {@code operator.getProperties()} to receive
	* JemmyProperties instance.
	*
	* @param id Driver type id.
	* @param operator Operator to get an driver for.
	* @return a driver.
	* @see #setDriver
	*/
	public static Object getDriver(String id, ComponentOperator operator) {
	return getDriver(id, operator.getClass(), operator.getProperties());
	}

	/**
	* Searches a driver. Uses current JemmyProperties.
	*
	* @param id Driver type id.
	* @param operatorClass Class to get an driver for.
	* @return a driver.
	* @see #setDriver
	*/
	public static Object getDriver(String id, Class<?> operatorClass) {
	Object result = getADriver(id, operatorClass, JemmyProperties.getProperties());
	if (result == null) {
	throw (new JemmyException("No \"" + id + "\" driver registered for "
	+ operatorClass.getName() + " class!"));
	} else {
	return result;
	}
	}

	/**
	* Sets driver for an operator class.
	*
	* @param id Driver type id.
	* @param driver A driver to be installed.
	* @param operatorClass Class to set driver for.
	* @see #getDriver
	*/
	public static void setDriver(String id, Object driver, Class<?> operatorClass) {
	JemmyProperties.
	setCurrentProperty(makeID(id, operatorClass), driver);
	if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
	JemmyProperties.getCurrentOutput().printLine("Installing "
	+ driver.getClass().getName()
	+ " drifer for "
	+ operatorClass.getName()
	+ " operators.");
	}
	}

	/**
	* Sets driver for an operator class name.
	*
	* @param id Driver type id.
	* @param driver A driver to be installed.
	* @param operatorClassName A name of operator class.
	* @see #getDriver
	*/
	public static void setDriver(String id, Object driver, String operatorClassName) {
	JemmyProperties.
	setCurrentProperty(makeID(id, operatorClassName), driver);
	if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
	JemmyProperties.getCurrentOutput().printLine("Installing "
	+ driver.getClass().getName()
	+ " drifer for "
	+ operatorClassName
	+ " operators.");
	}
	}

	/**
	* Sets driver for all classes supported by driver.
	*
	* @param id Driver type id.
	* @param driver A driver to be installed.
	* @see #getDriver
	*/
	public static void setDriver(String id, Driver driver) {
	Class<?>[] supported = driver.getSupported();
	for (Class<?> aSupported : supported) {
	setDriver(id, driver, aSupported);
	}
	}

	/**
	* Sets driver for all classes supported by driver.
	*
	* @param id Driver type id.
	* @param driver A driver to be installed.
	* @see #getDriver
	*/
	public static void setDriver(String id, LightDriver driver) {
	String[] supported = driver.getSupported();
	for (String aSupported : supported) {
	setDriver(id, driver, aSupported);
	}
	}

	/**
	* Removes driver for operator class.
	*
	* @param id Driver type to remove.
	* @param operatorClass Class to remove driver for.
	*/
	public static void removeDriver(String id, Class<?> operatorClass) {
	JemmyProperties.
	removeCurrentProperty(makeID(id, operatorClass));
	if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
	JemmyProperties.getCurrentOutput().printLine("Uninstalling a drifer for "
	+ operatorClass.getName()
	+ " operators.");
	}
	}

	/**
	* Removes driver for operator class.
	*
	* @param id Driver type to remove.
	* @param operatorClassName A name of operator class.
	*/
	public static void removeDriver(String id, String operatorClassName) {
	JemmyProperties.
	removeCurrentProperty(makeID(id, operatorClassName));
	if (Boolean.getBoolean(DRIVER_ID + "trace_output")) {
	JemmyProperties.getCurrentOutput().printLine("Uninstalling a drifer for "
	+ operatorClassName
	+ " operators.");
	}
	}

	/**
	* Removes driver for operator classes.
	*
	* @param id Driver type to remove.
	* @param operatorClasses Classes to remove driver for.
	*/
	public static void removeDriver(String id, Class<?>[] operatorClasses) {
	for (Class<?> operatorClass : operatorClasses) {
	removeDriver(id, operatorClass);
	}
	}

	/**
	* Removes driver for operator classes.
	*
	* @param id Driver type to remove.
	* @param operatorClassNames Names of operator classes.
	*/
	public static void removeDriver(String id, String[] operatorClassNames) {
	for (String operatorClassName : operatorClassNames) {
	removeDriver(id, operatorClassName);
	}
	}

	/**
	* Removes driver for all supported classes.
	*
	* @param id Driver type to remove.
	*/
	public static void removeDrivers(String id) {
	String[] keys = JemmyProperties.getCurrentKeys();
	for (String key : keys) {
	if (key.startsWith(id)) {
	JemmyProperties.
	removeCurrentProperty(key);
	}
	}
	}

	/**
	* Returns {@code TREE_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setTreeDriver
	*/
	public static TreeDriver getTreeDriver(Class<?> operatorClass) {
	return (TreeDriver) getDriver(TREE_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code TREE_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setTreeDriver
	*/
	public static TreeDriver getTreeDriver(ComponentOperator operator) {
	return (TreeDriver) getDriver(TREE_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code TREE_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getTreeDriver
	*/
	public static void setTreeDriver(TreeDriver driver) {
	setDriver(TREE_DRIVER_ID, driver);
	}

	/**
	* Returns {@code TEXT_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setTextDriver
	*/
	public static TextDriver getTextDriver(Class<?> operatorClass) {
	return (TextDriver) getDriver(TEXT_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code TEXT_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setTextDriver
	*/
	public static TextDriver getTextDriver(ComponentOperator operator) {
	return (TextDriver) getDriver(TEXT_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code TEXT_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getTextDriver
	*/
	public static void setTextDriver(TextDriver driver) {
	setDriver(TEXT_DRIVER_ID, driver);
	}

	/**
	* Returns {@code KEY_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setKeyDriver
	*/
	public static KeyDriver getKeyDriver(Class<?> operatorClass) {
	return (KeyDriver) getDriver(KEY_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code KEY_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setKeyDriver
	*/
	public static KeyDriver getKeyDriver(ComponentOperator operator) {
	return (KeyDriver) getDriver(KEY_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code KEY_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getKeyDriver
	*/
	public static void setKeyDriver(KeyDriver driver) {
	setDriver(KEY_DRIVER_ID, driver);
	}

	/**
	* Returns {@code MOUSE_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setMouseDriver
	*/
	public static MouseDriver getMouseDriver(Class<?> operatorClass) {
	return (MouseDriver) getDriver(MOUSE_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code MOUSE_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setMouseDriver
	*/
	public static MouseDriver getMouseDriver(ComponentOperator operator) {
	return (MouseDriver) getDriver(MOUSE_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code MOUSE_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getMouseDriver
	*/
	public static void setMouseDriver(MouseDriver driver) {
	setDriver(MOUSE_DRIVER_ID, driver);
	}

	/**
	* Returns {@code SCROLL_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setScrollDriver
	*/
	public static ScrollDriver getScrollDriver(Class<?> operatorClass) {
	return (ScrollDriver) getDriver(SCROLL_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code SCROLL_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setScrollDriver
	*/
	public static ScrollDriver getScrollDriver(ComponentOperator operator) {
	return (ScrollDriver) getDriver(SCROLL_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code SCROLL_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getScrollDriver
	*/
	public static void setScrollDriver(ScrollDriver driver) {
	setDriver(SCROLL_DRIVER_ID, driver);
	}

	/**
	* Returns {@code BUTTON_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setButtonDriver
	*/
	public static ButtonDriver getButtonDriver(Class<?> operatorClass) {
	return (ButtonDriver) getDriver(BUTTON_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code BUTTON_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setButtonDriver
	*/
	public static ButtonDriver getButtonDriver(ComponentOperator operator) {
	return (ButtonDriver) getDriver(BUTTON_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code BUTTON_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getButtonDriver
	*/
	public static void setButtonDriver(ButtonDriver driver) {
	setDriver(BUTTON_DRIVER_ID, driver);
	}

	/**
	* Returns {@code LIST_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setListDriver
	*/
	public static ListDriver getListDriver(Class<?> operatorClass) {
	return (ListDriver) getDriver(LIST_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code LIST_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setListDriver
	*/
	public static ListDriver getListDriver(ComponentOperator operator) {
	return (ListDriver) getDriver(LIST_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code LIST_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getListDriver
	*/
	public static void setListDriver(ListDriver driver) {
	setDriver(LIST_DRIVER_ID, driver);
	}

	/**
	* Returns {@code MULTISELLIST_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setMultiSelListDriver
	*/
	public static MultiSelListDriver getMultiSelListDriver(Class<?> operatorClass) {
	return (MultiSelListDriver) getDriver(MULTISELLIST_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code MULTISELLIST_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setMultiSelListDriver
	*/
	public static MultiSelListDriver getMultiSelListDriver(ComponentOperator operator) {
	return (MultiSelListDriver) getDriver(MULTISELLIST_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code MULTISELLIST_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getMultiSelListDriver
	*/
	public static void setMultiSelListDriver(MultiSelListDriver driver) {
	setDriver(MULTISELLIST_DRIVER_ID, driver);
	}

	/**
	* Returns {@code ORDEREDLIST_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setOrderedListDriver
	*/
	public static OrderedListDriver getOrderedListDriver(Class<?> operatorClass) {
	return (OrderedListDriver) getDriver(ORDEREDLIST_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code ORDEREDLIST_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setOrderedListDriver
	*/
	public static OrderedListDriver getOrderedListDriver(ComponentOperator operator) {
	return (OrderedListDriver) getDriver(ORDEREDLIST_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code ORDEREDLIST_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getOrderedListDriver
	*/
	public static void setOrderedListDriver(OrderedListDriver driver) {
	setDriver(ORDEREDLIST_DRIVER_ID, driver);
	}

	/**
	* Returns {@code TABLE_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setTableDriver
	*/
	public static TableDriver getTableDriver(Class<?> operatorClass) {
	return (TableDriver) getDriver(TABLE_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code TABLE_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setTableDriver
	*/
	public static TableDriver getTableDriver(ComponentOperator operator) {
	return (TableDriver) getDriver(TABLE_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code TABLE_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getTableDriver
	*/
	public static void setTableDriver(TableDriver driver) {
	setDriver(TABLE_DRIVER_ID, driver);
	}

	/**
	* Returns {@code WINDOW_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setWindowDriver
	*/
	public static WindowDriver getWindowDriver(Class<?> operatorClass) {
	return (WindowDriver) getDriver(WINDOW_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code WINDOW_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setWindowDriver
	*/
	public static WindowDriver getWindowDriver(ComponentOperator operator) {
	return (WindowDriver) getDriver(WINDOW_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code WINDOW_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getWindowDriver
	*/
	public static void setWindowDriver(WindowDriver driver) {
	setDriver(WINDOW_DRIVER_ID, driver);
	}

	/**
	* Returns {@code FRAME_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setFrameDriver
	*/
	public static FrameDriver getFrameDriver(Class<?> operatorClass) {
	return (FrameDriver) getDriver(FRAME_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code FRAME_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setFrameDriver
	*/
	public static FrameDriver getFrameDriver(ComponentOperator operator) {
	return (FrameDriver) getDriver(FRAME_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code FRAME_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getFrameDriver
	*/
	public static void setFrameDriver(FrameDriver driver) {
	setDriver(FRAME_DRIVER_ID, driver);
	}

	/**
	* Returns {@code INTERNAL_FRAME_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setInternalFrameDriver
	*/
	public static InternalFrameDriver getInternalFrameDriver(Class<?> operatorClass) {
	return (InternalFrameDriver) getDriver(INTERNAL_FRAME_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code INTERNAL_FRAME_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setInternalFrameDriver
	*/
	public static InternalFrameDriver getInternalFrameDriver(ComponentOperator operator) {
	return (InternalFrameDriver) getDriver(INTERNAL_FRAME_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code INTERNAL_FRAME_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getInternalFrameDriver
	*/
	public static void setInternalFrameDriver(InternalFrameDriver driver) {
	setDriver(INTERNAL_FRAME_DRIVER_ID, driver);
	}

	/**
	* Returns {@code FOCUS_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setFocusDriver
	*/
	public static FocusDriver getFocusDriver(Class<?> operatorClass) {
	return (FocusDriver) getDriver(FOCUS_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code FOCUS_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setFocusDriver
	*/
	public static FocusDriver getFocusDriver(ComponentOperator operator) {
	return (FocusDriver) getDriver(FOCUS_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code FOCUS_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getFocusDriver
	*/
	public static void setFocusDriver(FocusDriver driver) {
	setDriver(FOCUS_DRIVER_ID, driver);
	}

	/**
	* Returns {@code MENU_DRIVER_ID} driver.
	*
	* @param operatorClass Class to find driver for.
	* @return a driver
	* @see #setMenuDriver
	*/
	public static MenuDriver getMenuDriver(Class<?> operatorClass) {
	return (MenuDriver) getDriver(MENU_DRIVER_ID, operatorClass);
	}

	/**
	* Returns {@code MENU_DRIVER_ID} driver.
	*
	* @param operator Operator to find driver for.
	* @return a driver
	* @see #setMenuDriver
	*/
	public static MenuDriver getMenuDriver(ComponentOperator operator) {
	return (MenuDriver) getDriver(MENU_DRIVER_ID, operator.getClass());
	}

	/**
	* Defines {@code MENU_DRIVER_ID} driver.
	*
	* @param driver a driver
	* @see #getMenuDriver
	*/
	public static void setMenuDriver(MenuDriver driver) {
	setDriver(MENU_DRIVER_ID, driver);
	}

	static void setDriver(String id, Object driver) {
	if (driver instanceof Driver) {
	setDriver(id, (Driver) driver);
	} else if (driver instanceof LightDriver) {
	setDriver(id, (LightDriver) driver);
	} else {
	throw (new JemmyException("Driver is neither Driver nor LightDriver "
	+ driver.toString()));
	}
	}

	//creates driver id
	private static String makeID(String id, Class<?> operatorClass) {
	return makeID(id, operatorClass.getName());
	}

	private static String makeID(String id, String operatorClassName) {
	return id + "." + operatorClassName;
	}

	//returns a driver
	private static Object getADriver(String id, Class<?> operatorClass, JemmyProperties props) {
	Class<?> superClass = operatorClass;
	Object drvr;
	do {
	drvr = props.
	getProperty(makeID(id, superClass));
	if (drvr != null) {
	return drvr;
	}
	} while (ComponentOperator.class.
	isAssignableFrom(superClass = superClass.getSuperclass()));
	return null;
	}

	static {
	new InputDriverInstaller().install();
	new DefaultDriverInstaller().install();
	}
	}