Android Open Source - comicsapp Download Fragment

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From Project

Back to project page comicsapp.

License

The source code is released under:

GNU General Public License

Java Source Code

/* Copyright 2012-2014, Robert Myers */
/*from w w  w.j  a va 2  s .  c o  m*/
/*
 * This file is part of ComicsApp.

    ComicsApp is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Comics is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with ComicsApp.  If not, see <http://www.gnu.org/licenses/>
 */
package com.robandjen.comicsapp;

import java.net.MalformedURLException;
import java.net.URL;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;

public class DownloadFragment extends DialogFragment implements DownloadTask.DownloadResults, DialogInterface.OnClickListener {

  DownloadTask mDownloadTask;

  public static DownloadFragment newInstance(URL url) {
    DownloadFragment frag = new DownloadFragment();
    
    Bundle args = new Bundle();
    args.putString("url", url.toExternalForm());
    frag.setArguments(args);
    return frag;
    
  }
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    try {
      mDownloadTask = new DownloadTask(new URL(getArguments().getString("url")), this);
      mDownloadTask.execute();
    } catch (MalformedURLException e) {
      onDownloadFailed(e);
    }
  }

  @Override
  public void onCancel(DialogInterface dialog) {
    if (mDownloadTask != null) {
      mDownloadTask.cancel(true);
    }
    super.onCancel(dialog);
  }

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {
    ProgressDialog rc = new ProgressDialog(getActivity());
    rc.setIndeterminate(true);
    rc.setCancelable(true);
    rc.setButton(AlertDialog.BUTTON_NEGATIVE,getString(android.R.string.cancel),this);
    rc.setMessage(getString(R.string.in_progress));
    rc.setCanceledOnTouchOutside(false);
    return rc;
  }

  private DownloadTask.DownloadResults getResults() {
    Activity activity = getActivity();
    if (activity == null) {
      return null;
    }
    
    try {
      return (DownloadTask.DownloadResults) activity;
    }
    catch (Exception e) {
      return null;
    }
  }
  @Override
  public void onDownloadComplete(String results) {
    DownloadTask.DownloadResults delegate = getResults();
    if (delegate != null) {
      delegate.onDownloadComplete(results);
    }
    
    dismiss();
  }

  @Override
  public void onDownloadFailed(int code) {
    DownloadTask.DownloadResults delegate = getResults();
    if (delegate != null) {
      delegate.onDownloadFailed(code);
    }
    
    dismiss();
  }

  @Override
  public void onDownloadFailed(Exception e) {
    DownloadTask.DownloadResults delegate = getResults();
    if (delegate != null) {
      delegate.onDownloadFailed(e);
    }
    
    dismiss();
  }

  @Override
  public void onClick(DialogInterface dialog, int which) {
    //Only the cancel button is created
    getDialog().cancel();
    
  }
  
}

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