1 /*

     2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Pseudo class resolver for CSS Style properties

    15  *

    16 */

    17 

    18 

    19 package com.nokia.tools.themeinstaller.cssparser;

    20 

    21 import java.util.Collection;

    22 import java.util.Enumeration;

    23 import java.util.Hashtable;

    24 

    25 /**

    26  * Resolves pseudo class values by keys.

    27  */

    28 public class PseudoClassResolver

    29     { 

    30 

    31     // Pseudo class keys

    32     public static final int UNKNOWN       = -1;

    33     public static final int NONE          = 0;

    34     public static final int FOCUS         = 1;

    35     public static final int PASSIVE_FOCUS = 2;

    36     public static final int ACTIVE        = 3;

    37     public static final int HOLD          = 4;

    38     public static final int ENABLED       = 5;

    39     public static final int DISABLED      = 6;

    40     public static final int HOVER         = 7;

    41     public static final int LINK          = 8;

    42     public static final int VISITED       = 9;

    43     public static final int EDIT       = 10;

    44 

    45     // Pseudo class values

    46     private static final String NONE_VALUE          = "none";

    47     private static final String FOCUS_VALUE         = "focus";

    48     private static final String PASSIVE_FOCUS_VALUE = "passivefocus";

    49     private static final String ACTIVE_VALUE        = "active";

    50     private static final String HOLD_VALUE          = "hold";

    51     private static final String ENABLED_VALUE       = "enabled";

    52     private static final String DISABLED_VALUE      = "disabled";

    53     private static final String HOVER_VALUE         = "hover";

    54     private static final String LINK_VALUE          = "link";

    55     private static final String VISITED_VALUE       = "visited";

    56     private static final String EDIT_VALUE       = "edit";

    57 

    58     private Hashtable iPseudoClassTable;

    59 

    60     /**

    61      * Constructor.

    62      */

    63     public PseudoClassResolver()

    64         {

    65         iPseudoClassTable = new Hashtable();

    66         iPseudoClassTable.put( new Integer( NONE ), NONE_VALUE );

    67         iPseudoClassTable.put( new Integer( FOCUS ), FOCUS_VALUE );

    68         iPseudoClassTable.put( new Integer( PASSIVE_FOCUS ), PASSIVE_FOCUS_VALUE );

    69         iPseudoClassTable.put( new Integer( ACTIVE ), ACTIVE_VALUE );

    70         iPseudoClassTable.put( new Integer( HOLD ), HOLD_VALUE );

    71         iPseudoClassTable.put( new Integer( ENABLED ), ENABLED_VALUE );

    72         iPseudoClassTable.put( new Integer( DISABLED ), DISABLED_VALUE );

    73         iPseudoClassTable.put( new Integer( HOVER ), HOVER_VALUE );

    74         iPseudoClassTable.put( new Integer( LINK ), LINK_VALUE );

    75         iPseudoClassTable.put( new Integer( VISITED ), VISITED_VALUE );

    76         iPseudoClassTable.put( new Integer( EDIT ), EDIT_VALUE );

    77         }

    78 

    79     /**

    80      * Get pseudo class value by its key.

    81      * @param aClassKey Pseudo class key, for example, FOCUS

    82      * @return Pseudo class value, for example, "focus". Returns null if

    83      * the value can not be resolved.

    84      */

    85     public String getValue( Integer aClassKey )

    86         {

    87         return ( String ) iPseudoClassTable.get( aClassKey );

    88         }

    89 

    90     /**

    91      * Get pseudo class key by its value.

    92      * @param aClassValue Pseudo class value, for example, "focus"

    93      * @return Pseudo class key, for example, FOCUS. Returns UNKNOWN if the

    94      * value can not be resolved.

    95      */

    96     public int getKey( String aClassValue )

    97         {

    98         int result = UNKNOWN;

    99 

   100         Enumeration keys = iPseudoClassTable.keys();

   101         while ( keys.hasMoreElements() )

   102             {

   103             int key = ( ( Integer ) keys.nextElement() ).intValue();

   104             if ( aClassValue.equals( getValue( new Integer( key ) ) ) )

   105                 {

   106                 result = key;

   107                 break;

   108                 }

   109             }

   110 

   111         return result;

   112         }

   113 

   114     /**

   115      * Gets the table of pseudo class values.

   116      *

   117      * @return The table

   118      */

   119     public Collection getPseudoTypes()

   120         {

   121         return iPseudoClassTable.values();

   122         }

   123 

   124     }