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:  Stores the information for Style rules priority

    15  *

    16 */

    17 

    18 

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

    20 

    21 /**

    22  * The Class CSSSpecificity stores the information for Style rules priority

    23  */

    24 public class CSSSpecificity

    25     {

    26     final public static int ID = 0;

    27     final public static int ATTRIBUTE = 1;

    28     final public static int ELEMENT = 2;

    29 

    30     /** Table for counting specificity occurrences. */

    31     private int[] iSpecificity = { 0, 0, 0 };

    32 

    33     /**

    34      * Increase id count.

    35      */

    36     public void incID()

    37         {

    38         ++iSpecificity[ ID ];

    39         }

    40 

    41     /**

    42      * Increase attribute count.

    43      */

    44     public void incAttribute()

    45         {

    46         ++iSpecificity[ ATTRIBUTE ];

    47         }

    48 

    49     /**

    50      * Increase element count.

    51      */

    52     public void incElement()

    53         {

    54         ++iSpecificity[ ELEMENT ];

    55         }

    56 

    57     /**

    58      * Gets the specificity table.

    59      *

    60      * @return the specificity

    61      */

    62     public int[] getSpecificity()

    63         {

    64         return iSpecificity;

    65         }

    66 

    67     /**

    68      * Reset the table.

    69      */

    70     public void reset()

    71         {

    72         iSpecificity[ ID ] = 0;

    73         iSpecificity[ ATTRIBUTE ] = 0;

    74         iSpecificity[ ELEMENT ] = 0;

    75         }

    76 

    77     /**

    78      * Compare for another specificity.

    79      *

    80      * Order for priorities (3 has the highest priority): 1. element 2. .class

    81      * 3. #id

    82      *

    83      * @param aSpecificity Specificity to be compared

    84      *

    85      * @return 0 if this is equal, -1 if this is less, +1 if this is greater.

    86      */

    87     public int compare( CSSSpecificity aSpecificity )

    88         {

    89         int difference;

    90 

    91         difference = iSpecificity[ ID ] - aSpecificity.iSpecificity[ ID ];

    92         if ( difference != 0 )

    93             {

    94             if ( difference < 0 )

    95                 {

    96                 return -1;

    97                 }

    98             else

    99                 {

   100                 return 1;

   101                 }

   102             }

   103 

   104         difference = iSpecificity[ ATTRIBUTE ]

   105                 - aSpecificity.iSpecificity[ ATTRIBUTE ];

   106         if ( difference != 0 )

   107             {

   108             if ( difference < 0 )

   109                 {

   110                 return -1;

   111                 }

   112             else

   113                 {

   114                 return 1;

   115                 }

   116             }

   117 

   118         difference = iSpecificity[ ELEMENT ]

   119                 - aSpecificity.iSpecificity[ ELEMENT ];

   120         if ( difference != 0 )

   121             {

   122             if ( difference < 0 )

   123                 {

   124                 return -1;

   125                 }

   126             else

   127                 {

   128                 return 1;

   129                 }

   130             }

   131 

   132         return 0;

   133         }

   134 

   135     }