git.gag.com Git - debian/openrocket/blob - android/src/net/sf/openrocket/android/rocket/OpenRocketLoaderFragment.java

   1 package net.sf.openrocket.android.rocket;\r
   2 \r
   3 import java.io.File;\r
   4 \r
   5 import net.sf.openrocket.android.util.AndroidLogWrapper;\r
   6 import net.sf.openrocket.android.util.ProgressDialogFragment;\r
   7 import net.sf.openrocket.document.OpenRocketDocument;\r
   8 import net.sf.openrocket.file.DatabaseMotorFinderWithMissingMotors;\r
   9 import net.sf.openrocket.file.GeneralRocketLoader;\r
  10 import net.sf.openrocket.file.RocketLoadException;\r
  11 import android.app.Activity;\r
  12 import android.os.AsyncTask;\r
  13 import android.os.Bundle;\r
  14 import android.support.v4.app.DialogFragment;\r
  15 import android.support.v4.app.Fragment;\r
  16 import android.view.LayoutInflater;\r
  17 import android.view.View;\r
  18 import android.view.ViewGroup;\r
  19 \r
  20 public class OpenRocketLoaderFragment extends Fragment {\r
  21         \r
  22         private final static String FILE_ARG_KEY = "file";\r
  23         \r
  24         private final static String LOADING_MESSAGE = "Loading file...";\r
  25 \r
  26         public interface OnOpenRocketFileLoaded {\r
  27                 public void onOpenRocketFileLoaded( OpenRocketLoaderResult result );\r
  28         }\r
  29         \r
  30         private File file;\r
  31         private OpenRocketLoaderTask task;\r
  32         private OnOpenRocketFileLoaded listener;\r
  33         \r
  34         public static OpenRocketLoaderFragment newInstance(File file) {\r
  35                 OpenRocketLoaderFragment frag = new OpenRocketLoaderFragment();\r
  36                 Bundle b = new Bundle();\r
  37                 b.putSerializable(FILE_ARG_KEY, file);\r
  38                 frag.setArguments(b);\r
  39                 return frag;\r
  40         }\r
  41         \r
  42         @Override\r
  43         public void onCreate(Bundle savedInstanceState) {\r
  44                 super.onCreate(savedInstanceState);\r
  45                 setRetainInstance(true);\r
  46                 Bundle b = getArguments();\r
  47                 file = (File) b.getSerializable(FILE_ARG_KEY);\r
  48                 if ( task == null ) {\r
  49                         // since we retain instance state, task will be non-null if it is already loading.\r
  50                         task = new OpenRocketLoaderTask();\r
  51                         task.execute(file);\r
  52                 }\r
  53         }\r
  54 \r
  55         @Override\r
  56         public View onCreateView(LayoutInflater inflater, ViewGroup container,\r
  57                         Bundle savedInstanceState) {\r
  58                 return null;\r
  59         }\r
  60 \r
  61         @Override\r
  62         public void onActivityCreated(Bundle arg0) {\r
  63                 super.onActivityCreated(arg0);\r
  64                 Activity parent = getActivity();\r
  65                 if ( parent instanceof OnOpenRocketFileLoaded ) {\r
  66                         listener = (OnOpenRocketFileLoaded) parent;\r
  67                 }\r
  68         }\r
  69 \r
  70         public class OpenRocketLoaderTask extends AsyncTask<File, Void, OpenRocketLoaderResult> {\r
  71                 \r
  72                 private final static String PROGRESS_DIALOG_TAG = "progress_dialog";\r
  73                 \r
  74                 @Override\r
  75                 protected void onPreExecute() {\r
  76                         super.onPreExecute();\r
  77                         DialogFragment newFragment = ProgressDialogFragment.newInstance("", LOADING_MESSAGE);\r
  78                         newFragment.show(getFragmentManager(), PROGRESS_DIALOG_TAG);\r
  79                 }\r
  80 \r
  81                 /* (non-Javadoc)\r
  82                  * @see android.os.AsyncTask#doInBackground(Params[])\r
  83                  */\r
  84                 @Override\r
  85                 protected OpenRocketLoaderResult doInBackground(File... arg0) {\r
  86                         AndroidLogWrapper.d(OpenRocketLoaderTask.class, "doInBackgroud");\r
  87                         \r
  88                         GeneralRocketLoader rocketLoader = new GeneralRocketLoader();\r
  89                         OpenRocketLoaderResult result = new OpenRocketLoaderResult();\r
  90                         try {\r
  91                                 OpenRocketDocument rocket = rocketLoader.load(arg0[0], new DatabaseMotorFinderWithMissingMotors());\r
  92                                 result.rocket = rocket;\r
  93                                 result.warnings = rocketLoader.getWarnings();\r
  94                         } catch (RocketLoadException ex) {\r
  95                                 AndroidLogWrapper.e(OpenRocketLoaderTask.class, "doInBackground rocketLaoder.load threw {}", ex);\r
  96                                 result.loadingError = ex;\r
  97                         }\r
  98                         return result;\r
  99                         \r
 100                 }\r
 101 \r
 102                 @Override\r
 103                 protected void onPostExecute(OpenRocketLoaderResult result) {\r
 104                         super.onPostExecute(result);\r
 105                         AndroidLogWrapper.d(OpenRocketLoaderActivity.class,"Finished loading " + OpenRocketLoaderTask.this);\r
 106                         Fragment progress = getActivity().getSupportFragmentManager().findFragmentByTag(PROGRESS_DIALOG_TAG);\r
 107                         if ( progress != null ) {\r
 108                                 ((ProgressDialogFragment)progress).dismissAllowingStateLoss();\r
 109                         }\r
 110                         if ( listener != null ) {\r
 111                                 listener.onOpenRocketFileLoaded(result);\r
 112                         }\r
 113                 }\r
 114 \r
 115         }\r
 116 \r
 117 }\r