michael@0: /*
michael@0:  * Copyright (C) 2013 Square, Inc.
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: package com.squareup.picasso;
michael@0: 
michael@0: import android.graphics.Bitmap;
michael@0: import android.graphics.drawable.Drawable;
michael@0: import java.lang.ref.ReferenceQueue;
michael@0: import java.lang.ref.WeakReference;
michael@0: 
michael@0: abstract class Action<T> {
michael@0:   static class RequestWeakReference<T> extends WeakReference<T> {
michael@0:     final Action action;
michael@0: 
michael@0:     public RequestWeakReference(Action action, T referent, ReferenceQueue<? super T> q) {
michael@0:       super(referent, q);
michael@0:       this.action = action;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   final Picasso picasso;
michael@0:   final Request data;
michael@0:   final WeakReference<T> target;
michael@0:   final boolean skipCache;
michael@0:   final boolean noFade;
michael@0:   final int errorResId;
michael@0:   final Drawable errorDrawable;
michael@0:   final String key;
michael@0: 
michael@0:   boolean cancelled;
michael@0: 
michael@0:   Action(Picasso picasso, T target, Request data, boolean skipCache, boolean noFade,
michael@0:       int errorResId, Drawable errorDrawable, String key) {
michael@0:     this.picasso = picasso;
michael@0:     this.data = data;
michael@0:     this.target = new RequestWeakReference<T>(this, target, picasso.referenceQueue);
michael@0:     this.skipCache = skipCache;
michael@0:     this.noFade = noFade;
michael@0:     this.errorResId = errorResId;
michael@0:     this.errorDrawable = errorDrawable;
michael@0:     this.key = key;
michael@0:   }
michael@0: 
michael@0:   abstract void complete(Bitmap result, Picasso.LoadedFrom from);
michael@0: 
michael@0:   abstract void error();
michael@0: 
michael@0:   void cancel() {
michael@0:     cancelled = true;
michael@0:   }
michael@0: 
michael@0:   Request getData() {
michael@0:     return data;
michael@0:   }
michael@0: 
michael@0:   T getTarget() {
michael@0:     return target.get();
michael@0:   }
michael@0: 
michael@0:   String getKey() {
michael@0:     return key;
michael@0:   }
michael@0: 
michael@0:   boolean isCancelled() {
michael@0:     return cancelled;
michael@0:   }
michael@0: 
michael@0:   Picasso getPicasso() {
michael@0:     return picasso;
michael@0:   }
michael@0: }