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 net.sf.openrocket.motor.Motor;\r
   9 import android.app.Activity;\r
  10 import android.content.Context;\r
  11 import android.content.Intent;\r
  12 import android.content.SharedPreferences;\r
  13 import android.content.res.Resources;\r
  14 import android.database.Cursor;\r
  15 import android.os.Bundle;\r
  16 import android.preference.PreferenceManager;\r
  17 import android.view.ContextMenu;\r
  18 import android.view.ContextMenu.ContextMenuInfo;\r
  19 import android.view.Menu;\r
  20 import android.view.MenuItem;\r
  21 import android.view.View;\r
  22 import android.widget.CursorTreeAdapter;\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                 \r
  41                 MotorListFragment frag = new MotorListFragment();\r
  42                 return frag;\r
  43         }\r
  44         \r
  45         private static final int CONTEXTMENU_DELETE = Menu.FIRST+1;\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 CursorTreeAdapter mAdapter;\r
  58 \r
  59         private DbAdapter mDbHelper;\r
  60         \r
  61         private OnMotorSelectedListener motorSelectedListener;\r
  62         \r
  63         public void setMotorSelectedListener(\r
  64                         OnMotorSelectedListener motorSelectedListener) {\r
  65                 this.motorSelectedListener = motorSelectedListener;\r
  66         }\r
  67 \r
  68         public class MotorHierarchicalListAdapter extends ResourceCursorTreeAdapter\r
  69         {\r
  70 \r
  71                 // Note that the constructor does not take a Cursor. This is done to avoid querying the \r
  72                 // database on the main thread.\r
  73                 public MotorHierarchicalListAdapter(Context context, Cursor cursor, int groupLayout,\r
  74                                 int childLayout ) {\r
  75 \r
  76                         super(context, cursor, groupLayout, childLayout);\r
  77                 }\r
  78 \r
  79                 @Override\r
  80                 protected Cursor getChildrenCursor(Cursor arg0) {\r
  81                         AndroidLogWrapper.d(MotorListFragment.class,"getChildrenCursor");\r
  82                         String group = arg0.getString(arg0.getColumnIndex(groupColumn));\r
  83                         AndroidLogWrapper.d(MotorListFragment.class,"  for: "+ groupColumn + " = " + group);\r
  84                         Cursor c = mDbHelper.getMotorDao().fetchAllInGroups(groupColumn,group);\r
  85                         AndroidLogWrapper.d(MotorListFragment.class,"  got cursor");\r
  86                         getActivity().startManagingCursor(c);\r
  87                         return c;\r
  88                 }\r
  89 \r
  90                 @Override\r
  91                 public long getGroupId(int groupPosition) {\r
  92                         return groupPosition;\r
  93                 }\r
  94 \r
  95                 /* (non-Javadoc)\r
  96                  * @see android.widget.CursorTreeAdapter#bindChildView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
  97                  */\r
  98                 @Override\r
  99                 protected void bindChildView(View arg0, Context arg1, Cursor arg2,\r
 100                                 boolean arg3) {\r
 101                         \r
 102                         TextView manu = (TextView) arg0.findViewById(R.id.motorChildManu);\r
 103                         manu.setText( arg2.getString(arg2.getColumnIndex(MotorDao.MANUFACTURER)));\r
 104                         \r
 105                         TextView desig = (TextView) arg0.findViewById(R.id.motorChildName);\r
 106                         desig.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DESIGNATION)));\r
 107                         \r
 108                         TextView delays = (TextView) arg0.findViewById(R.id.motorChildDelays);\r
 109                         delays.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DELAYS)));\r
 110                         \r
 111                         TextView totImpulse = (TextView) arg0.findViewById(R.id.motorChildImpulse);\r
 112                         totImpulse.setText( arg2.getString(arg2.getColumnIndex(MotorDao.TOTAL_IMPULSE)));\r
 113                 }\r
 114 \r
 115                 /* (non-Javadoc)\r
 116                  * @see android.widget.CursorTreeAdapter#bindGroupView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
 117                  */\r
 118                 @Override\r
 119                 protected void bindGroupView(View view, Context context, Cursor cursor,\r
 120                                 boolean isExpanded) {\r
 121                         TextView v = (TextView) view.findViewById(R.id.motorGroup);\r
 122                         if ( MotorDao.DIAMETER.equals(groupColumn)) {\r
 123                                 double d = cursor.getDouble( cursor.getColumnIndex(groupColumn));\r
 124                                 v.setText( String.valueOf(Math.round(d * 1000.0)) );\r
 125                         } else {\r
 126                                 v.setText( cursor.getString( cursor.getColumnIndex(groupColumn)));\r
 127                         }\r
 128                 }\r
 129                 \r
 130         }\r
 131 \r
 132         @Override\r
 133         public void onSharedPreferenceChanged(SharedPreferences arg0, String arg1) {\r
 134                 if ( groupColumnPreferenceKey.equals(arg1) ) {\r
 135                         setGroupColumnFromPreferences(arg0);\r
 136                         refreshData();\r
 137                 }\r
 138         }\r
 139 \r
 140         @Override\r
 141         public void onViewCreated(View view, Bundle savedInstanceState) {\r
 142                 super.onViewCreated(view, savedInstanceState);\r
 143                 refreshData();\r
 144 \r
 145                 registerForContextMenu(getExpandableListView());\r
 146 \r
 147         }\r
 148 \r
 149         @Override\r
 150         public void onAttach(Activity activity) {\r
 151                 super.onAttach(activity);\r
 152                 mDbHelper = new DbAdapter(getActivity());\r
 153                 mDbHelper.open();\r
 154 \r
 155                 Resources resources = this.getResources();\r
 156                 groupColumnPreferenceKey = resources.getString(R.string.PreferenceMotorBrowserGroupingOption);\r
 157                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 158 \r
 159                 setGroupColumnFromPreferences(pref);\r
 160 \r
 161                 pref.registerOnSharedPreferenceChangeListener(this);\r
 162                 \r
 163                 if ( activity instanceof OnMotorSelectedListener ) {\r
 164                         motorSelectedListener = (OnMotorSelectedListener) activity;\r
 165                 }\r
 166 \r
 167         }\r
 168 \r
 169         @Override\r
 170         public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {\r
 171                 menu.setHeaderTitle("Motor Operations");\r
 172                 menu.add(Menu.NONE,CONTEXTMENU_DELETE,CONTEXTMENU_DELETE,"Delete");\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                 }\r
 187                 return super.onContextItemSelected(item);\r
 188         }\r
 189 \r
 190         @Override\r
 191         public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {\r
 192                 super.onChildClick(parent, v, groupPosition, childPosition, id);\r
 193                 //Intent i = new Intent(this, BurnPlotActivity.class);\r
 194                 if( motorSelectedListener != null ) {\r
 195                         motorSelectedListener.onMotorSelected(id);\r
 196                 }\r
 197                 return true;\r
 198         }\r
 199 \r
 200         @Override\r
 201         public void onDetach() {\r
 202                 super.onDetach();\r
 203                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 204                 pref.unregisterOnSharedPreferenceChangeListener(this);\r
 205 \r
 206                 // Null out the group cursor. This will cause the group cursor and all of the child cursors\r
 207                 // to be closed.\r
 208                 mAdapter.changeCursor(null);\r
 209                 mAdapter = null;\r
 210 \r
 211                 mDbHelper.close();\r
 212         }\r
 213 \r
 214         private void setGroupColumnFromPreferences( SharedPreferences prefs ) {\r
 215                 String indexStr = prefs.getString(groupColumnPreferenceKey, "1");\r
 216                 int index;\r
 217                 //Dirty hack, you can't use integer-array in ListPreferences\r
 218                 try {\r
 219                         index = Integer.parseInt(indexStr);\r
 220                 } catch ( Exception e ) {\r
 221                         index = 1;\r
 222                 }\r
 223                 if ( index >= groupColumns.length ) {\r
 224                         index = 1;\r
 225                 }\r
 226                 groupColumn = groupColumns[index];\r
 227 \r
 228         }\r
 229         private void refreshData() {\r
 230                 if (mAdapter != null ) {\r
 231                         mAdapter.changeCursor(null);\r
 232                 }\r
 233                 Cursor motorCursor = mDbHelper.getMotorDao().fetchGroups(groupColumn);\r
 234                 getActivity().startManagingCursor(motorCursor);\r
 235                 // Set up our adapter\r
 236                 mAdapter = new MotorHierarchicalListAdapter( \r
 237                                 getActivity(),\r
 238                                 motorCursor,\r
 239                                 R.layout.motor_list_group,\r
 240                                 R.layout.motor_list_child);\r
 241                 setListAdapter(mAdapter);\r
 242         }\r
 243 }\r