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 public class MotorListFragment extends PersistentExpandableListFragment\r
  30 implements SharedPreferences.OnSharedPreferenceChangeListener\r
  31 {\r
  32         public interface OnMotorSelectedListener {\r
  33                 public void onMotorSelected( long motorId );\r
  34         }\r
  35 \r
  36         public static MotorListFragment newInstance( ) {\r
  37                 MotorListFragment frag = new MotorListFragment();\r
  38                 return frag;\r
  39         }\r
  40 \r
  41         private static final int CONTEXTMENU_DELETE = Menu.FIRST+1;\r
  42         private static final int CONTEXTMENU_EDIT = Menu.FIRST+2;\r
  43 \r
  44         private String groupColumnPreferenceKey;\r
  45         private String groupColumn = MotorDao.CASE_INFO;\r
  46 \r
  47         private static final String[] groupColumns = new String[] {\r
  48                 MotorDao.CASE_INFO,\r
  49                 MotorDao.DIAMETER,\r
  50                 MotorDao.IMPULSE_CLASS,\r
  51                 MotorDao.MANUFACTURER\r
  52         };\r
  53 \r
  54         private DbAdapter mDbHelper;\r
  55 \r
  56         private OnMotorSelectedListener motorSelectedListener;\r
  57 \r
  58         public void setMotorSelectedListener(\r
  59                         OnMotorSelectedListener motorSelectedListener) {\r
  60                 this.motorSelectedListener = motorSelectedListener;\r
  61         }\r
  62 \r
  63         public class MotorHierarchicalListAdapter extends ResourceCursorTreeAdapter\r
  64         {\r
  65 \r
  66                 // Note that the constructor does not take a Cursor. This is done to avoid querying the \r
  67                 // database on the main thread.\r
  68                 public MotorHierarchicalListAdapter(Context context, Cursor cursor, int groupLayout,\r
  69                                 int childLayout ) {\r
  70 \r
  71                         super(context, cursor, groupLayout, childLayout);\r
  72                 }\r
  73 \r
  74                 @Override\r
  75                 protected Cursor getChildrenCursor(Cursor arg0) {\r
  76                         AndroidLogWrapper.d(MotorListFragment.class,"getChildrenCursor");\r
  77                         String group = arg0.getString(arg0.getColumnIndex(groupColumn));\r
  78                         Cursor c = mDbHelper.getMotorDao().fetchAllInGroups(groupColumn,group);\r
  79                         return c;\r
  80                 }\r
  81 \r
  82                 @Override\r
  83                 public long getGroupId(int groupPosition) {\r
  84                         return groupPosition;\r
  85                 }\r
  86 \r
  87                 /* (non-Javadoc)\r
  88                  * @see android.widget.CursorTreeAdapter#bindChildView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
  89                  */\r
  90                 @Override\r
  91                 protected void bindChildView(View arg0, Context arg1, Cursor arg2,\r
  92                                 boolean arg3) {\r
  93 \r
  94                         TextView manu = (TextView) arg0.findViewById(R.id.motorChildManu);\r
  95                         manu.setText( arg2.getString(arg2.getColumnIndex(MotorDao.MANUFACTURER)));\r
  96 \r
  97                         TextView desig = (TextView) arg0.findViewById(R.id.motorChildName);\r
  98                         desig.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DESIGNATION)));\r
  99 \r
 100                         TextView delays = (TextView) arg0.findViewById(R.id.motorChildDelays);\r
 101                         delays.setText( arg2.getString(arg2.getColumnIndex(MotorDao.DELAYS)));\r
 102 \r
 103                         TextView totImpulse = (TextView) arg0.findViewById(R.id.motorChildImpulse);\r
 104                         totImpulse.setText( arg2.getString(arg2.getColumnIndex(MotorDao.TOTAL_IMPULSE)));\r
 105                 }\r
 106 \r
 107                 /* (non-Javadoc)\r
 108                  * @see android.widget.CursorTreeAdapter#bindGroupView(android.view.View, android.content.Context, android.database.Cursor, boolean)\r
 109                  */\r
 110                 @Override\r
 111                 protected void bindGroupView(View view, Context context, Cursor cursor,\r
 112                                 boolean isExpanded) {\r
 113                         TextView v = (TextView) view.findViewById(R.id.motorGroup);\r
 114                         if ( MotorDao.DIAMETER.equals(groupColumn)) {\r
 115                                 double d = cursor.getDouble( cursor.getColumnIndex(groupColumn));\r
 116                                 v.setText( String.valueOf(Math.round(d * 1000.0)) + " mm");\r
 117                         } else {\r
 118                                 v.setText( cursor.getString( cursor.getColumnIndex(groupColumn)));\r
 119                         }\r
 120                 }\r
 121 \r
 122         }\r
 123 \r
 124         @Override\r
 125         public void onSharedPreferenceChanged(SharedPreferences arg0, String arg1) {\r
 126                 if ( groupColumnPreferenceKey.equals(arg1) ) {\r
 127                         setGroupColumnFromPreferences(arg0);\r
 128                         refreshData();\r
 129                 }\r
 130         }\r
 131 \r
 132         @Override\r
 133         public void onViewCreated(View view, Bundle savedInstanceState) {\r
 134                 super.onViewCreated(view, savedInstanceState);\r
 135 \r
 136                 registerForContextMenu(getExpandableListView());\r
 137 \r
 138         }\r
 139 \r
 140         \r
 141         @Override\r
 142         public void onResume() {\r
 143 \r
 144                 Resources resources = this.getResources();\r
 145                 groupColumnPreferenceKey = resources.getString(R.string.PreferenceMotorBrowserGroupingOption);\r
 146                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 147 \r
 148                 setGroupColumnFromPreferences(pref);\r
 149 \r
 150                 pref.registerOnSharedPreferenceChangeListener(this);\r
 151 \r
 152                 Activity activity = getActivity();\r
 153                 if ( activity instanceof OnMotorSelectedListener ) {\r
 154                         motorSelectedListener = (OnMotorSelectedListener) activity;\r
 155                 }\r
 156 \r
 157                 refreshData();\r
 158 \r
 159                 super.onResume();\r
 160 \r
 161         }\r
 162 \r
 163         @Override\r
 164         public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {\r
 165                 menu.setHeaderTitle("Motor Operations");\r
 166                 menu.add(Menu.NONE,CONTEXTMENU_DELETE,CONTEXTMENU_DELETE,"Delete");\r
 167                 menu.add(Menu.NONE,CONTEXTMENU_EDIT,CONTEXTMENU_EDIT,"Edit");\r
 168                 super.onCreateContextMenu(menu, v, menuInfo);\r
 169         }\r
 170 \r
 171         @Override\r
 172         public boolean onContextItemSelected(MenuItem item) {\r
 173                 ExpandableListView.ExpandableListContextMenuInfo info = (ExpandableListView.ExpandableListContextMenuInfo) item.getMenuInfo();\r
 174                 long motorId = info.id;\r
 175                 AndroidLogWrapper.d(MotorListFragment.class,"ContextMenu: " + motorId);\r
 176                 switch(item.getItemId()) {\r
 177                 case CONTEXTMENU_DELETE:\r
 178                         mDbHelper.getMotorDao().deleteMotor(motorId);\r
 179                         refreshData();\r
 180                         return true;\r
 181                 case CONTEXTMENU_EDIT:\r
 182                         // DialogFragment.show() will take care of adding the fragment\r
 183                         // in a transaction.  We also want to remove any currently showing\r
 184                         // dialog, so make our own transaction and take care of that here.\r
 185                         FragmentTransaction ft = getFragmentManager().beginTransaction();\r
 186                         Fragment prev = getFragmentManager().findFragmentByTag("dialog");\r
 187                         if (prev != null) {\r
 188                                 ft.remove(prev);\r
 189                         }\r
 190                         ft.addToBackStack(null);\r
 191 \r
 192                         // Create and show the dialog.\r
 193                         DialogFragment newFragment = MotorDetailsFragment.newInstance(motorId);\r
 194                         newFragment.show(ft, "dialog");\r
 195                         return true;\r
 196                 }\r
 197                 return super.onContextItemSelected(item);\r
 198         }\r
 199 \r
 200         @Override\r
 201         public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {\r
 202                 super.onChildClick(parent, v, groupPosition, childPosition, id);\r
 203                 if( motorSelectedListener != null ) {\r
 204                         motorSelectedListener.onMotorSelected(id);\r
 205                 }\r
 206                 return true;\r
 207         }\r
 208 \r
 209         @Override\r
 210         public void onPause() {\r
 211                 super.onPause();\r
 212                 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getActivity());\r
 213                 pref.unregisterOnSharedPreferenceChangeListener(this);\r
 214 \r
 215                 mDbHelper.close();\r
 216         }\r
 217 \r
 218         private void setGroupColumnFromPreferences( SharedPreferences prefs ) {\r
 219                 String indexStr = prefs.getString(groupColumnPreferenceKey, "1");\r
 220                 int index;\r
 221                 //Dirty hack, you can't use integer-array in ListPreferences\r
 222                 try {\r
 223                         index = Integer.parseInt(indexStr);\r
 224                 } catch ( Exception e ) {\r
 225                         index = 1;\r
 226                 }\r
 227                 if ( index >= groupColumns.length ) {\r
 228                         index = 1;\r
 229                 }\r
 230                 groupColumn = groupColumns[index];\r
 231 \r
 232         }\r
 233 \r
 234         public void refreshData() {\r
 235                 if ( mDbHelper == null ) {\r
 236                         mDbHelper = new DbAdapter(getActivity());\r
 237                 }\r
 238                 mDbHelper.open();\r
 239 \r
 240                 Cursor motorCounter = mDbHelper.getMotorDao().fetchAllMotors();\r
 241                 int motorCount = motorCounter.getCount();\r
 242                 motorCounter.close();\r
 243                 \r
 244                 if ( motorCount == 0 ) {\r
 245                         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());\r
 246                         builder.setTitle("No Motors Found");\r
 247                         builder.setMessage("Motors can be downloaded from thrustcurve");\r
 248                         builder.setCancelable(true);\r
 249                         builder.create().show();\r
 250                 }\r
 251 \r
 252                 Cursor motorCursor = mDbHelper.getMotorDao().fetchGroups(groupColumn);\r
 253                 MotorHierarchicalListAdapter mAdapter = new MotorHierarchicalListAdapter( \r
 254                                 getActivity(),\r
 255                                 motorCursor,\r
 256                                 R.layout.motor_list_group,\r
 257                                 R.layout.motor_list_child);\r
 258                 setListAdapter(mAdapter);\r
 259                 onContentChanged();\r
 260         }\r
 261 }\r