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.app.AlertDialog;\r
  10 import android.content.Context;\r
  11 import android.content.SharedPreferences;\r
  12 import android.content.res.Resources;\r
  13 import android.database.Cursor;\r
  14 import android.os.Bundle;\r
  15 import android.preference.PreferenceManager;\r
  16 import android.support.v4.app.DialogFragment;\r
  17 import android.support.v4.app.Fragment;\r
  18 import android.support.v4.app.FragmentTransaction;\r
  19 import android.view.ContextMenu;\r
  20 import android.view.ContextMenu.ContextMenuInfo;\r
  21 import android.view.Menu;\r
  22 import android.view.MenuItem;\r
  23 import android.view.View;\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 DbAdapter mDbHelper;\r
  59 \r
  60         private OnMotorSelectedListener motorSelectedListener;\r
  61 \r
  62         public void setMotorSelectedListener(\r
  63                         OnMotorSelectedListener motorSelectedListener) {\r
  64                 this.motorSelectedListener = motorSelectedListener;\r
  65         }\r
  66 \r
  67         public class MotorHierarchicalListAdapter extends ResourceCursorTreeAdapter\r
  68         {\r
  69 \r
  70                 // Note that the constructor does not take a Cursor. This is done to avoid querying the \r
  71                 // database on the main thread.\r
  72                 public MotorHierarchicalListAdapter(Context context, Cursor cursor, int groupLayout,\r
  73                                 int childLayout ) {\r
  74 \r
  75                         super(context, cursor, groupLayout, childLayout);\r
  76                 }\r
  77 \r
  78                 @Override\r
  79                 protected Cursor getChildrenCursor(Cursor arg0) {\r
  80                         AndroidLogWrapper.d(MotorListFragment.class,"getChildrenCursor");\r
  81                         String group = arg0.getString(arg0.getColumnIndex(groupColumn));\r
  82                         Cursor c = mDbHelper.getMotorDao().fetchAllInGroups(groupColumn,group);\r
  83                         return c;\r
  84                 }\r
  85 \r
  86                 @Override\r
  87                 public long getGroupId(int groupPosition) {\r
  88                         return groupPosition;\r
  89                 }\r
  90 \r
  91                 /* (non-Javadoc)\r
  92                  * @see android.widget.CursorTreeAdapter#bindChildView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
  93                  */\r
  94                 @Override\r
  95                 protected void bindChildView(View arg0, Context arg1, Cursor arg2,\r
  96                                 boolean arg3) {\r
  97 \r
  98                         TextView manu = (TextView) arg0.findViewById(R.id.motorChildManu);\r
  99                         manu.setText( arg2.getString(arg2.getColumnIndex(MotorDao.MANUFACTURER)));\r
 100 \r
 101                         TextView desig = (TextView) arg0.findViewById(R.id.motorChildName);\r
 102                         desig.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DESIGNATION)));\r
 103 \r
 104                         TextView delays = (TextView) arg0.findViewById(R.id.motorChildDelays);\r
 105                         delays.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DELAYS)));\r
 106 \r
 107                         TextView totImpulse = (TextView) arg0.findViewById(R.id.motorChildImpulse);\r
 108                         totImpulse.setText( arg2.getString(arg2.getColumnIndex(MotorDao.TOTAL_IMPULSE)));\r
 109                 }\r
 110 \r
 111                 /* (non-Javadoc)\r
 112                  * @see android.widget.CursorTreeAdapter#bindGroupView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
 113                  */\r
 114                 @Override\r
 115                 protected void bindGroupView(View view, Context context, Cursor cursor,\r
 116                                 boolean isExpanded) {\r
 117                         TextView v = (TextView) view.findViewById(R.id.motorGroup);\r
 118                         if ( MotorDao.DIAMETER.equals(groupColumn)) {\r
 119                                 double d = cursor.getDouble( cursor.getColumnIndex(groupColumn));\r
 120                                 v.setText( String.valueOf(Math.round(d * 1000.0)) + " mm");\r
 121                         } else {\r
 122                                 v.setText( cursor.getString( cursor.getColumnIndex(groupColumn)));\r
 123                         }\r
 124                 }\r
 125 \r
 126         }\r
 127 \r
 128         @Override\r
 129         public void onSharedPreferenceChanged(SharedPreferences arg0, String arg1) {\r
 130                 if ( groupColumnPreferenceKey.equals(arg1) ) {\r
 131                         setGroupColumnFromPreferences(arg0);\r
 132                         refreshData();\r
 133                 }\r
 134         }\r
 135 \r
 136         @Override\r
 137         public void onViewCreated(View view, Bundle savedInstanceState) {\r
 138                 super.onViewCreated(view, savedInstanceState);\r
 139 \r
 140                 registerForContextMenu(getExpandableListView());\r
 141 \r
 142         }\r
 143 \r
 144         \r
 145         @Override\r
 146         public void onResume() {\r
 147 \r
 148                 Resources resources = this.getResources();\r
 149                 groupColumnPreferenceKey = resources.getString(R.string.PreferenceMotorBrowserGroupingOption);\r
 150                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 151 \r
 152                 setGroupColumnFromPreferences(pref);\r
 153 \r
 154                 pref.registerOnSharedPreferenceChangeListener(this);\r
 155 \r
 156                 Activity activity = getActivity();\r
 157                 if ( activity instanceof OnMotorSelectedListener ) {\r
 158                         motorSelectedListener = (OnMotorSelectedListener) activity;\r
 159                 }\r
 160 \r
 161                 refreshData();\r
 162 \r
 163                 super.onResume();\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                 if( motorSelectedListener != null ) {\r
 208                         motorSelectedListener.onMotorSelected(id);\r
 209                 }\r
 210                 return true;\r
 211         }\r
 212 \r
 213         @Override\r
 214         public void onPause() {\r
 215                 super.onPause();\r
 216                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 217                 pref.unregisterOnSharedPreferenceChangeListener(this);\r
 218 \r
 219                 mDbHelper.close();\r
 220         }\r
 221 \r
 222         private void setGroupColumnFromPreferences( SharedPreferences prefs ) {\r
 223                 String indexStr = prefs.getString(groupColumnPreferenceKey, "1");\r
 224                 int index;\r
 225                 //Dirty hack, you can't use integer-array in ListPreferences\r
 226                 try {\r
 227                         index = Integer.parseInt(indexStr);\r
 228                 } catch ( Exception e ) {\r
 229                         index = 1;\r
 230                 }\r
 231                 if ( index >= groupColumns.length ) {\r
 232                         index = 1;\r
 233                 }\r
 234                 groupColumn = groupColumns[index];\r
 235 \r
 236         }\r
 237 \r
 238         public void refreshData() {\r
 239                 if ( mDbHelper == null ) {\r
 240                         mDbHelper = new DbAdapter(getActivity());\r
 241                 }\r
 242                 mDbHelper.open();\r
 243 \r
 244                 Cursor motorCounter = mDbHelper.getMotorDao().fetchAllMotors();\r
 245                 int motorCount = motorCounter.getCount();\r
 246                 motorCounter.close();\r
 247                 \r
 248                 if ( motorCount == 0 ) {\r
 249                         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());\r
 250                         builder.setTitle("No Motors Found");\r
 251                         builder.setMessage("Motors can be downloaded from thrustcurve");\r
 252                         builder.setCancelable(true);\r
 253                         builder.create().show();\r
 254                 }\r
 255 \r
 256                 Cursor motorCursor = mDbHelper.getMotorDao().fetchGroups(groupColumn);\r
 257                 MotorHierarchicalListAdapter mAdapter = new MotorHierarchicalListAdapter( \r
 258                                 getActivity(),\r
 259                                 motorCursor,\r
 260                                 R.layout.motor_list_group,\r
 261                                 R.layout.motor_list_child);\r
 262                 setListAdapter(mAdapter);\r
 263                 onContentChanged();\r
 264         }\r
 265 }\r