git.gag.com Git - debian/openrocket/blob - android/src/net/sf/openrocket/android/motor/MotorListFragment.java

   1 package net.sf.openrocket.android.motor;\r
   2 \r
   3 import net.sf.openrocket.R;\r
   4 import net.sf.openrocket.android.db.DbAdapter;\r
   5 import net.sf.openrocket.android.db.MotorDao;\r
   6 import net.sf.openrocket.android.util.AndroidLogWrapper;\r
   7 import net.sf.openrocket.android.util.PersistentExpandableListFragment;\r
   8 import android.app.Activity;\r
   9 import android.content.Context;\r
  10 import android.content.SharedPreferences;\r
  11 import android.content.res.Resources;\r
  12 import android.database.Cursor;\r
  13 import android.os.Bundle;\r
  14 import android.preference.PreferenceManager;\r
  15 import android.support.v4.app.DialogFragment;\r
  16 import android.support.v4.app.Fragment;\r
  17 import android.support.v4.app.FragmentTransaction;\r
  18 import android.view.ContextMenu;\r
  19 import android.view.ContextMenu.ContextMenuInfo;\r
  20 import android.view.Menu;\r
  21 import android.view.MenuItem;\r
  22 import android.view.View;\r
  23 import android.widget.ExpandableListView;\r
  24 import android.widget.ResourceCursorTreeAdapter;\r
  25 import android.widget.TextView;\r
  26 \r
  27 \r
  28 /*\r
  29  * TODO - make this work with PersistentExpandableListFragment.\r
  30  * \r
  31  */\r
  32 public class MotorListFragment extends PersistentExpandableListFragment\r
  33 implements SharedPreferences.OnSharedPreferenceChangeListener\r
  34 {\r
  35         public interface OnMotorSelectedListener {\r
  36                 public void onMotorSelected( long motorId );\r
  37         }\r
  38 \r
  39         public static MotorListFragment newInstance( ) {\r
  40                 MotorListFragment frag = new MotorListFragment();\r
  41                 return frag;\r
  42         }\r
  43 \r
  44         private static final int CONTEXTMENU_DELETE = Menu.FIRST+1;\r
  45         private static final int CONTEXTMENU_EDIT = Menu.FIRST+2;\r
  46 \r
  47         private String groupColumnPreferenceKey;\r
  48         private String groupColumn = MotorDao.CASE_INFO;\r
  49 \r
  50         private static final String[] groupColumns = new String[] {\r
  51                 MotorDao.CASE_INFO,\r
  52                 MotorDao.DIAMETER,\r
  53                 MotorDao.IMPULSE_CLASS,\r
  54                 MotorDao.MANUFACTURER\r
  55         };\r
  56 \r
  57         private DbAdapter mDbHelper;\r
  58 \r
  59         private OnMotorSelectedListener motorSelectedListener;\r
  60 \r
  61         public void setMotorSelectedListener(\r
  62                         OnMotorSelectedListener motorSelectedListener) {\r
  63                 this.motorSelectedListener = motorSelectedListener;\r
  64         }\r
  65 \r
  66         public class MotorHierarchicalListAdapter extends ResourceCursorTreeAdapter\r
  67         {\r
  68 \r
  69                 // Note that the constructor does not take a Cursor. This is done to avoid querying the \r
  70                 // database on the main thread.\r
  71                 public MotorHierarchicalListAdapter(Context context, Cursor cursor, int groupLayout,\r
  72                                 int childLayout ) {\r
  73 \r
  74                         super(context, cursor, groupLayout, childLayout);\r
  75                 }\r
  76 \r
  77                 @Override\r
  78                 protected Cursor getChildrenCursor(Cursor arg0) {\r
  79                         AndroidLogWrapper.d(MotorListFragment.class,"getChildrenCursor");\r
  80                         String group = arg0.getString(arg0.getColumnIndex(groupColumn));\r
  81                         Cursor c = mDbHelper.getMotorDao().fetchAllInGroups(groupColumn,group);\r
  82                         return c;\r
  83                 }\r
  84 \r
  85                 @Override\r
  86                 public long getGroupId(int groupPosition) {\r
  87                         return groupPosition;\r
  88                 }\r
  89 \r
  90                 /* (non-Javadoc)\r
  91                  * @see android.widget.CursorTreeAdapter#bindChildView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
  92                  */\r
  93                 @Override\r
  94                 protected void bindChildView(View arg0, Context arg1, Cursor arg2,\r
  95                                 boolean arg3) {\r
  96 \r
  97                         TextView manu = (TextView) arg0.findViewById(R.id.motorChildManu);\r
  98                         manu.setText( arg2.getString(arg2.getColumnIndex(MotorDao.MANUFACTURER)));\r
  99 \r
 100                         TextView desig = (TextView) arg0.findViewById(R.id.motorChildName);\r
 101                         desig.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DESIGNATION)));\r
 102 \r
 103                         TextView delays = (TextView) arg0.findViewById(R.id.motorChildDelays);\r
 104                         delays.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DELAYS)));\r
 105 \r
 106                         TextView totImpulse = (TextView) arg0.findViewById(R.id.motorChildImpulse);\r
 107                         totImpulse.setText( arg2.getString(arg2.getColumnIndex(MotorDao.TOTAL_IMPULSE)));\r
 108                 }\r
 109 \r
 110                 /* (non-Javadoc)\r
 111                  * @see android.widget.CursorTreeAdapter#bindGroupView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
 112                  */\r
 113                 @Override\r
 114                 protected void bindGroupView(View view, Context context, Cursor cursor,\r
 115                                 boolean isExpanded) {\r
 116                         TextView v = (TextView) view.findViewById(R.id.motorGroup);\r
 117                         if ( MotorDao.DIAMETER.equals(groupColumn)) {\r
 118                                 double d = cursor.getDouble( cursor.getColumnIndex(groupColumn));\r
 119                                 v.setText( String.valueOf(Math.round(d * 1000.0)) );\r
 120                         } else {\r
 121                                 v.setText( cursor.getString( cursor.getColumnIndex(groupColumn)));\r
 122                         }\r
 123                 }\r
 124 \r
 125         }\r
 126 \r
 127         @Override\r
 128         public void onSharedPreferenceChanged(SharedPreferences arg0, String arg1) {\r
 129                 if ( groupColumnPreferenceKey.equals(arg1) ) {\r
 130                         setGroupColumnFromPreferences(arg0);\r
 131                         refreshData();\r
 132                 }\r
 133         }\r
 134 \r
 135         @Override\r
 136         public void onViewCreated(View view, Bundle savedInstanceState) {\r
 137                 super.onViewCreated(view, savedInstanceState);\r
 138                 // TODO - need some error text but unfortunately doing this, makes the layout funky\r
 139                 // on ICS.\r
 140                 //setEmptyText("No motors in database - download them from Thrustcurve using the Option Menu");\r
 141 \r
 142                 refreshData();\r
 143 \r
 144                 registerForContextMenu(getExpandableListView());\r
 145 \r
 146         }\r
 147 \r
 148         @Override\r
 149         public void onAttach(Activity activity) {\r
 150                 super.onAttach(activity);\r
 151                 mDbHelper = new DbAdapter(getActivity());\r
 152                 mDbHelper.open();\r
 153 \r
 154                 Resources resources = this.getResources();\r
 155                 groupColumnPreferenceKey = resources.getString(R.string.PreferenceMotorBrowserGroupingOption);\r
 156                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 157 \r
 158                 setGroupColumnFromPreferences(pref);\r
 159 \r
 160                 pref.registerOnSharedPreferenceChangeListener(this);\r
 161 \r
 162                 if ( activity instanceof OnMotorSelectedListener ) {\r
 163                         motorSelectedListener = (OnMotorSelectedListener) activity;\r
 164                 }\r
 165 \r
 166         }\r
 167 \r
 168         @Override\r
 169         public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {\r
 170                 menu.setHeaderTitle("Motor Operations");\r
 171                 menu.add(Menu.NONE,CONTEXTMENU_DELETE,CONTEXTMENU_DELETE,"Delete");\r
 172                 menu.add(Menu.NONE,CONTEXTMENU_EDIT,CONTEXTMENU_EDIT,"Edit");\r
 173                 super.onCreateContextMenu(menu, v, menuInfo);\r
 174         }\r
 175 \r
 176         @Override\r
 177         public boolean onContextItemSelected(MenuItem item) {\r
 178                 ExpandableListView.ExpandableListContextMenuInfo info = (ExpandableListView.ExpandableListContextMenuInfo) item.getMenuInfo();\r
 179                 long motorId = info.id;\r
 180                 AndroidLogWrapper.d(MotorListFragment.class,"ContextMenu: " + motorId);\r
 181                 switch(item.getItemId()) {\r
 182                 case CONTEXTMENU_DELETE:\r
 183                         mDbHelper.getMotorDao().deleteMotor(motorId);\r
 184                         refreshData();\r
 185                         return true;\r
 186                 case CONTEXTMENU_EDIT:\r
 187                         // DialogFragment.show() will take care of adding the fragment\r
 188                         // in a transaction.  We also want to remove any currently showing\r
 189                         // dialog, so make our own transaction and take care of that here.\r
 190                         FragmentTransaction ft = getFragmentManager().beginTransaction();\r
 191                         Fragment prev = getFragmentManager().findFragmentByTag("dialog");\r
 192                         if (prev != null) {\r
 193                                 ft.remove(prev);\r
 194                         }\r
 195                         ft.addToBackStack(null);\r
 196 \r
 197                         // Create and show the dialog.\r
 198                         DialogFragment newFragment = MotorDetailsFragment.newInstance(motorId);\r
 199                         newFragment.show(ft, "dialog");\r
 200                         return true;\r
 201                 }\r
 202                 return super.onContextItemSelected(item);\r
 203         }\r
 204 \r
 205         @Override\r
 206         public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {\r
 207                 super.onChildClick(parent, v, groupPosition, childPosition, id);\r
 208                 if( motorSelectedListener != null ) {\r
 209                         motorSelectedListener.onMotorSelected(id);\r
 210                 }\r
 211                 return true;\r
 212         }\r
 213 \r
 214         @Override\r
 215         public void onDetach() {\r
 216                 super.onDetach();\r
 217                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 218                 pref.unregisterOnSharedPreferenceChangeListener(this);\r
 219 \r
 220                 mDbHelper.close();\r
 221         }\r
 222 \r
 223         private void setGroupColumnFromPreferences( SharedPreferences prefs ) {\r
 224                 String indexStr = prefs.getString(groupColumnPreferenceKey, "1");\r
 225                 int index;\r
 226                 //Dirty hack, you can't use integer-array in ListPreferences\r
 227                 try {\r
 228                         index = Integer.parseInt(indexStr);\r
 229                 } catch ( Exception e ) {\r
 230                         index = 1;\r
 231                 }\r
 232                 if ( index >= groupColumns.length ) {\r
 233                         index = 1;\r
 234                 }\r
 235                 groupColumn = groupColumns[index];\r
 236 \r
 237         }\r
 238 \r
 239         public void refreshData() {\r
 240                 Cursor motorCursor = mDbHelper.getMotorDao().fetchGroups(groupColumn);\r
 241                 MotorHierarchicalListAdapter mAdapter = new MotorHierarchicalListAdapter( \r
 242                                 getActivity(),\r
 243                                 motorCursor,\r
 244                                 R.layout.motor_list_group,\r
 245                                 R.layout.motor_list_child);\r
 246                 setListAdapter(mAdapter);\r
 247                 onContentChanged();\r
 248         }\r
 249 }\r