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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.ide.eclipse.adt.internal.resources.configurations;
     18 
     19 import com.android.ide.eclipse.adt.internal.editors.IconFactory;
     20 
     21 import org.eclipse.swt.graphics.Image;
     22 
     23 import java.util.regex.Matcher;
     24 import java.util.regex.Pattern;
     25 
     26 /**
     27  * Resource Qualifier for Region.
     28  */
     29 public final class RegionQualifier extends ResourceQualifier {
     30     private final static Pattern sRegionPattern = Pattern.compile("^r([A-Z]{2})$"); //$NON-NLS-1$
     31 
     32     public static final String FAKE_REGION_VALUE = "__"; //$NON-NLS-1$
     33     public static final String NAME = "Region";
     34 
     35     private String mValue;
     36 
     37     /**
     38      * Creates and returns a qualifier from the given folder segment. If the segment is incorrect,
     39      * <code>null</code> is returned.
     40      * @param segment the folder segment from which to create a qualifier.
     41      * @return a new {@link RegionQualifier} object or <code>null</code>
     42      */
     43     public static RegionQualifier getQualifier(String segment) {
     44         Matcher m = sRegionPattern.matcher(segment);
     45         if (m.matches()) {
     46             RegionQualifier qualifier = new RegionQualifier();
     47             qualifier.mValue = m.group(1);
     48 
     49             return qualifier;
     50         }
     51         return null;
     52     }
     53 
     54     /**
     55      * Returns the folder name segment for the given value. This is equivalent to calling
     56      * {@link #toString()} on a {@link RegionQualifier} object.
     57      * @param value the value of the qualifier, as returned by {@link #getValue()}.
     58      */
     59     public static String getFolderSegment(String value) {
     60         if (value != null) {
     61             String segment = "r" + value.toUpperCase(); //$NON-NLS-1$
     62             if (sRegionPattern.matcher(segment).matches()) {
     63                 return segment;
     64             }
     65         }
     66 
     67         return "";  //$NON-NLS-1$
     68     }
     69 
     70     public RegionQualifier() {
     71 
     72     }
     73 
     74     public RegionQualifier(String value) {
     75         mValue = value;
     76     }
     77 
     78     public String getValue() {
     79         if (mValue != null) {
     80             return mValue;
     81         }
     82 
     83         return ""; //$NON-NLS-1$
     84     }
     85 
     86     @Override
     87     public String getName() {
     88         return NAME;
     89     }
     90 
     91     @Override
     92     public String getShortName() {
     93         return NAME;
     94     }
     95 
     96     @Override
     97     public Image getIcon() {
     98         return IconFactory.getInstance().getIcon("region"); //$NON-NLS-1$
     99     }
    100 
    101     @Override
    102     public boolean isValid() {
    103         return mValue != null;
    104     }
    105 
    106     @Override
    107     public boolean hasFakeValue() {
    108         return FAKE_REGION_VALUE.equals(mValue);
    109     }
    110 
    111     @Override
    112     public boolean checkAndSet(String value, FolderConfiguration config) {
    113         RegionQualifier qualifier = getQualifier(value);
    114         if (qualifier != null) {
    115             config.setRegionQualifier(qualifier);
    116             return true;
    117         }
    118 
    119         return false;
    120     }
    121 
    122     @Override
    123     public boolean equals(Object qualifier) {
    124         if (qualifier instanceof RegionQualifier) {
    125             if (mValue == null) {
    126                 return ((RegionQualifier)qualifier).mValue == null;
    127             }
    128             return mValue.equals(((RegionQualifier)qualifier).mValue);
    129         }
    130 
    131         return false;
    132     }
    133 
    134     @Override
    135     public int hashCode() {
    136         if (mValue != null) {
    137             return mValue.hashCode();
    138         }
    139 
    140         return 0;
    141     }
    142 
    143     /**
    144      * Returns the string used to represent this qualifier in the folder name.
    145      */
    146     @Override
    147     public String getFolderSegment() {
    148         return getFolderSegment(mValue);
    149     }
    150 
    151     @Override
    152     public String getShortDisplayValue() {
    153         if (mValue != null) {
    154             return mValue;
    155         }
    156 
    157         return ""; //$NON-NLS-1$
    158     }
    159 
    160     @Override
    161     public String getLongDisplayValue() {
    162         if (mValue != null) {
    163             return String.format("Region %s", mValue);
    164         }
    165 
    166         return ""; //$NON-NLS-1$
    167     }
    168 }
    169