Increase target size of preferred letters while typing.

This increases the chance of hitting the correct letter when typing a word
that exists in the dictionary, rather than only correct it after the fact.
It is most effective after 2 or 3 letters of a word have been typed and gets
more accurate with more typed letters in the word.

If 2 adjacent letters have similar probabilities of occuring, then there is no
hit correction applied.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/com/android/inputmethod/latin/Dictionary.java b/src/com/android/inputmethod/latin/Dictionary.java
index 6c1c856e7..b656d04dc 100644
--- a/src/com/android/inputmethod/latin/Dictionary.java
+++ b/src/com/android/inputmethod/latin/Dictionary.java
@@ -55,9 +55,14 @@ abstract public class Dictionary {
      * words are added through the callback object.
      * @param composer the key sequence to match
      * @param callback the callback object to send matched words to as possible candidates
+     * @param nextLettersFrequencies array of frequencies of next letters that could follow the
+     *        word so far. For instance, "bracke" can be followed by "t", so array['t'] will have
+     *        a non-zero value on returning from this method. 
+     *        Pass in null if you don't want the dictionary to look up next letters.
      * @see WordCallback#addWord(char[], int, int)
      */
-    abstract public void getWords(final WordComposer composer, final WordCallback callback);
+    abstract public void getWords(final WordComposer composer, final WordCallback callback,
+            int[] nextLettersFrequencies);
 
     /**
      * Checks if the given word occurs in the dictionary