br.org.fiscal65.amazonaws.AWSTransferModel.java Source code

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Here is the source code for br.org.fiscal65.amazonaws.AWSTransferModel.java

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/*
 * Copyright 2010-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
package br.org.fiscal65.amazonaws;

import java.util.LinkedHashMap;

import android.content.Context;

import com.amazonaws.services.s3.transfer.Transfer;
import com.amazonaws.services.s3.transfer.TransferManager;

/*
 * The TransferModel is a class that encapsulates a transfer. It handles the 
 * interaction with the underlying TransferManager and Upload/Download classes
 */
public abstract class AWSTransferModel {
    private static final String TAG = "TransferModel";

    public static enum Status {
        IN_PROGRESS, PAUSED, CANCELED, COMPLETED
    };

    //all TransferModels have associated id which is their key to sModels
    private static LinkedHashMap<Integer, AWSTransferModel> sModels = new LinkedHashMap<Integer, AWSTransferModel>();
    private static int sNextId = 1;

    private String mFileName;
    private Context mContext;
    private int mId;
    private TransferManager mManager;

    public static AWSTransferModel getTransferModel(int id) {
        return sModels.get(id);
    }

    public static AWSTransferModel[] getAllTransfers() {
        AWSTransferModel[] models = new AWSTransferModel[sModels.size()];
        return sModels.values().toArray(models);
    }

    public AWSTransferModel(Context context) {
        mContext = context;
        mId = sNextId++;
        sModels.put(mId, this);
    }

    public String getFileName() {
        return mFileName;
    }

    public int getId() {
        return mId;
    }

    public int getProgress() {
        Transfer transfer = getTransfer();
        if (transfer != null) {
            int ret = (int) transfer.getProgress().getPercentTransferred();
            return ret;
        }
        return 0;
    }

    public abstract void abort();

    public abstract Status getStatus();

    public abstract Transfer getTransfer();

    public abstract void pause();

    public abstract void resume();

    protected Context getContext() {
        return mContext;
    }

    protected TransferManager getTransferManager() {
        if (mManager == null) {
            mManager = new TransferManager(AWSUtil.getCredProvider(mContext));
        }
        return mManager;
    }
}