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      1 /*
      2  * Copyright (C) 2011 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.ant;
     18 
     19 import org.apache.tools.ant.Task;
     20 
     21 /**
     22  * Base class for tasks that should exec when the build type change.
     23  */
     24 public abstract class BuildTypedTask extends Task {
     25 
     26     private String mPreviousBuildType;
     27     private String mBuildType;
     28 
     29     /** Sets the current build type */
     30     public void setBuildType(String buildType) {
     31         mBuildType = buildType;
     32     }
     33 
     34     /** Sets the previous build type */
     35     public void setPreviousBuildType(String previousBuildType) {
     36         mPreviousBuildType = previousBuildType;
     37     }
     38 
     39     protected String getBuildType() {
     40         return mBuildType;
     41     }
     42 
     43     /**
     44      * Returns if it is a new build. If the build type is not input
     45      * from the XML, this always returns true.
     46      * A build type is defined by having an empty previousBuildType.
     47      */
     48     protected boolean isNewBuild() {
     49         return mBuildType == null || mPreviousBuildType.length() == 0;
     50     }
     51 
     52     /**
     53      * Returns true if the build type changed.
     54      */
     55     protected boolean hasBuildTypeChanged() {
     56         // no build type? return false as the feature is simply not used
     57         if (mBuildType == null && mPreviousBuildType == null) {
     58             return false;
     59         }
     60 
     61         return mBuildType.equals(mPreviousBuildType) == false;
     62     }
     63 }
     64