Change the return type of getWords and getBigrams (A8)

This only returns stuff, but it doesn't change yet how the data
is really passed. It merely adds a way of getting the same data.
Later, the old way will be removed.

Change-Id: If3a064de362175fc5a6781b7a97b65d8730aaf3c

1 files changed, 35 insertions, 8 deletions

diff --git a/java/src/com/android/inputmethod/latin/DictionaryCollection.java b/java/src/com/android/inputmethod/latin/DictionaryCollection.java
index 26c2e637e..6b424f88f 100644
--- a/java/src/com/android/inputmethod/latin/DictionaryCollection.java
+++ b/java/src/com/android/inputmethod/latin/DictionaryCollection.java
@@ -17,9 +17,11 @@
 package com.android.inputmethod.latin;
 
 import com.android.inputmethod.keyboard.ProximityInfo;
+import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
 
 import android.util.Log;
 
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.concurrent.CopyOnWriteArrayList;
@@ -50,17 +52,42 @@ public class DictionaryCollection extends Dictionary {
     }
 
     @Override
-    public void getWords(final WordComposer composer, final CharSequence prevWordForBigrams,
-            final WordCallback callback, final ProximityInfo proximityInfo) {
-        for (final Dictionary dict : mDictionaries)
-            dict.getWords(composer, prevWordForBigrams, callback, proximityInfo);
+    public ArrayList<SuggestedWordInfo> getWords(final WordComposer composer,
+            final CharSequence prevWordForBigrams, final WordCallback callback,
+            final ProximityInfo proximityInfo) {
+        final CopyOnWriteArrayList<Dictionary> dictionaries = mDictionaries;
+        if (dictionaries.isEmpty()) return null;
+        // To avoid creating unnecessary objects, we get the list out of the first
+        // dictionary and add the rest to it if not null, hence the get(0)
+        ArrayList<SuggestedWordInfo> suggestions = dictionaries.get(0).getWords(composer,
+                prevWordForBigrams, callback, proximityInfo);
+        if (null == suggestions) suggestions = new ArrayList<SuggestedWordInfo>();
+        final int length = dictionaries.size();
+        for (int i = 0; i < length; ++ i) {
+            final ArrayList<SuggestedWordInfo> sugg = dictionaries.get(i).getWords(composer,
+                    prevWordForBigrams, callback, proximityInfo);
+            if (null != sugg) suggestions.addAll(sugg);
+        }
+        return suggestions;
     }
 
     @Override
-    public void getBigrams(final WordComposer composer, final CharSequence previousWord,
-            final WordCallback callback) {
-        for (final Dictionary dict : mDictionaries)
-            dict.getBigrams(composer, previousWord, callback);
+    public ArrayList<SuggestedWordInfo> getBigrams(final WordComposer composer,
+            final CharSequence previousWord, final WordCallback callback) {
+        final CopyOnWriteArrayList<Dictionary> dictionaries = mDictionaries;
+        if (dictionaries.isEmpty()) return null;
+        // To avoid creating unnecessary objects, we get the list out of the first
+        // dictionary and add the rest to it if not null, hence the get(0)
+        ArrayList<SuggestedWordInfo> suggestions = dictionaries.get(0).getBigrams(composer,
+                previousWord, callback);
+        if (null == suggestions) suggestions = new ArrayList<SuggestedWordInfo>();
+        final int length = dictionaries.size();
+        for (int i = 0; i < length; ++ i) {
+            final ArrayList<SuggestedWordInfo> sugg =
+                    dictionaries.get(i).getBigrams(composer, previousWord, callback);
+            if (null != sugg) suggestions.addAll(sugg);
+        }
+        return suggestions;
     }
 
     @Override