Merge "Fix bug #13322036 stability-sys: Java crash in com.android.settings: android.database.sqlite.SQLiteException: malformed MATCH expression: [ avs- /y@ggmd"*] (code 1)"

src/com/android/settings/dashboard/DashboardSummary.java

@@ -22,6 +22,9 @@ import android.database.Cursor;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.text.Editable;
+import android.text.InputFilter;
+import android.text.SpannableStringBuilder;
+import android.text.Spanned;
 import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.view.LayoutInflater;
@@ -66,6 +69,32 @@ public class DashboardSummary extends Fragment {
         }
     }
 
+    /**
+     * A basic InputFilter for filtering query input (mainly because we are issuing SQL queries
+     * that need to be valid ones. So just accept Letters, Digits and Spaces.
+     */
+    private class QueryInputFilter implements InputFilter {
+
+        public QueryInputFilter() {
+        }
+
+        @Override
+        public CharSequence filter(CharSequence source, int start, int end, Spanned dest,
+                                   int dstart, int dend) {
+            SpannableStringBuilder sb = null;
+            for (int i = start; i < end; i++) {
+                char c = source.charAt(i);
+                if (!Character.isLetterOrDigit(c) && !Character.isSpaceChar(c)) {
+                    if (sb == null) {
+                        sb = new SpannableStringBuilder(source, start, end);
+                    }
+                    sb.delete(i, i + 1);
+                }
+            }
+            return sb;
+        }
+    }
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -118,6 +147,9 @@ public class DashboardSummary extends Fragment {
             }
         });
 
+        final InputFilter queryFilter = new QueryInputFilter();
+        mEditText.setFilters(new InputFilter[] { queryFilter });
+
         mListView = (ListView) view.findViewById(R.id.list_results);
         mListView.setAdapter(mAdapter);
         mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {