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