Modify hint button to fill in all notes

app/src/main/java/org/secuso/privacyfriendlysudoku/controller/GameController.java

@@ -40,8 +40,10 @@ import org.secuso.privacyfriendlysudoku.game.listener.IModelChangedListener;
 import org.secuso.privacyfriendlysudoku.game.listener.ITimerListener;
 import org.secuso.privacyfriendlysudoku.ui.GameActivity;
 
+import java.util.Arrays;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Timer;
@@ -218,6 +220,7 @@ public class GameController implements IModelChangedListener, Parcelable {
     }*/
 
     public void hint(){
+        /*
         if(!isValidCellSelected()) {
             return;
         }
@@ -233,7 +236,46 @@ public class GameController implements IModelChangedListener, Parcelable {
         usedHints++;
 
         notifyHintListener();
+        notifyHighlightChangedListeners();*/
+
+        final GameCell[][] field = gameBoard.getField();
+        for(int row_id=0; row_id < field.length; row_id++) {
+            final GameCell[] row_field = field[row_id];
+            for(int column_id=0; column_id < row_field.length; column_id++) {
+                final GameCell cell = row_field[column_id];
+
+                if(cell.hasValue()){
+                    continue;
+                }
+
+                final boolean[] notes = new boolean[gameBoard.getSize()];
+                Arrays.fill(notes, true);
+
+                removeFixedValues(notes, gameBoard.getRow(row_id));
+                removeFixedValues(notes, gameBoard.getColumn(column_id));
+                removeFixedValues(notes, gameBoard.getSection(row_id, column_id));
+
+                cell.deleteNotes();
+                for(int i=0; i<notes.length; i++){
+                    if(notes[i]) {
+                        cell.setNote(i+1);
+                    }
+                }
+
+            }
+        }
+
+        undoRedoManager.addState(gameBoard);
         notifyHighlightChangedListeners();
+
+    }
+
+    private static void removeFixedValues(boolean[] notes, LinkedList<GameCell> section) {
+        for(GameCell neighbour_cell : section) {
+            if(neighbour_cell.isFixed()){
+                notes[neighbour_cell.getValue() - 1] = false;
+            }
+        }
     }
 
     private void setGameType(GameType type) {

app/src/main/java/org/secuso/privacyfriendlysudoku/ui/view/SudokuSpecialButtonLayout.java

@@ -88,20 +88,7 @@ public class SudokuSpecialButtonLayout extends LinearLayout implements IHighligh
                         gameController.UnDo();
                         break;
                     case Hint:
-                        if(gameController.isValidCellSelected()) {
-                            if(gameController.getUsedHints() == 0 && !gameController.gameIsCustom()) {
-                                // are you sure you want to use a hint?
-                                HintConfirmationDialog hintDialog = new HintConfirmationDialog();
-                                hintDialog.show(fragmentManager, "HintDialogFragment");
-
-                            } else {
                         gameController.hint();
-                            }
-                        } else {
-                            // Display a Toast that explains how to use the Hint function.
-                            Toast t = Toast.makeText(getContext(), R.string.hint_usage, Toast.LENGTH_SHORT);
-                            t.show();
-                        }
                         break;
                     default:
                         break;