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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
      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.common.resources.configuration;
     18 
     19 import com.android.resources.ResourceEnum;
     20 import com.android.resources.UiMode;
     21 
     22 /**
     23  * Resource Qualifier for UI Mode.
     24  */
     25 public final class UiModeQualifier extends EnumBasedResourceQualifier {
     26 
     27     public static final String NAME = "UI Mode";
     28 
     29     private UiMode mValue;
     30 
     31     public UiModeQualifier() {
     32         // pass
     33     }
     34 
     35     public UiModeQualifier(UiMode value) {
     36         mValue = value;
     37     }
     38 
     39     public UiMode getValue() {
     40         return mValue;
     41     }
     42 
     43     @Override
     44     ResourceEnum getEnumValue() {
     45         return mValue;
     46     }
     47 
     48     @Override
     49     public String getName() {
     50         return NAME;
     51     }
     52 
     53     @Override
     54     public String getShortName() {
     55         return NAME;
     56     }
     57 
     58     @Override
     59     public int since() {
     60         return 8;
     61     }
     62 
     63     @Override
     64     public boolean checkAndSet(String value, FolderConfiguration config) {
     65         UiMode mode = UiMode.getEnum(value);
     66         if (mode != null) {
     67             UiModeQualifier qualifier = new UiModeQualifier(mode);
     68             config.setUiModeQualifier(qualifier);
     69             return true;
     70         }
     71 
     72         return false;
     73     }
     74 
     75     @Override
     76     public boolean isMatchFor(ResourceQualifier qualifier) {
     77         // only normal is a match for all UI mode, because it's not an actual mode.
     78         if (mValue == UiMode.NORMAL) {
     79             return true;
     80         }
     81 
     82         // others must be an exact match
     83         return ((UiModeQualifier)qualifier).mValue == mValue;
     84     }
     85 
     86     @Override
     87     public boolean isBetterMatchThan(ResourceQualifier compareTo, ResourceQualifier reference) {
     88         if (compareTo == null) {
     89             return true;
     90         }
     91 
     92         UiModeQualifier compareQualifier = (UiModeQualifier)compareTo;
     93         UiModeQualifier referenceQualifier = (UiModeQualifier)reference;
     94 
     95         if (compareQualifier.getValue() == referenceQualifier.getValue()) {
     96             // what we have is already the best possible match (exact match)
     97             return false;
     98         } else  if (mValue == referenceQualifier.mValue) {
     99             // got new exact value, this is the best!
    100             return true;
    101         } else if (mValue == UiMode.NORMAL) {
    102             // else "normal" can be a match in case there's no exact match
    103             return true;
    104         }
    105 
    106         return false;
    107     }
    108 }
    109