Auto-added words will only be capitalized if user intended to. #2373284

If a user creates a new word at the beginning of a sentence, then don't
add it as a capitalized word in the dictionary.

src/com/android/inputmethod/latin/LatinIME.java

@@ -815,13 +815,17 @@ public class LatinIME extends InputMethodService
         InputConnection ic = getCurrentInputConnection();
         if (attr != null && mInputView != null && mKeyboardSwitcher.isAlphabetMode()
                 && ic != null) {
+            mInputView.setShifted(mCapsLock || getCursorCapsMode(ic, attr) != 0);
+        }
+    }
+
+    private int getCursorCapsMode(InputConnection ic, EditorInfo attr) {
         int caps = 0;
         EditorInfo ei = getCurrentInputEditorInfo();
         if (mAutoCap && ei != null && ei.inputType != EditorInfo.TYPE_NULL) {
             caps = ic.getCursorCapsMode(attr.inputType);
         }
-            mInputView.setShifted(mCapsLock || caps != 0);
-        }
+        return caps;
     }
 
     private void swapPunctuationAndSpace() {
@@ -1014,6 +1018,11 @@ public class LatinIME extends InputMethodService
             mWord.add(primaryCode, keyCodes);
             InputConnection ic = getCurrentInputConnection();
             if (ic != null) {
+                // If it's the first letter, make note of auto-caps state
+                if (mWord.size() == 1) {
+                    mWord.setAutoCapitalized(
+                            getCursorCapsMode(ic, getCurrentInputEditorInfo()) != 0);
+                }
                 ic.setComposingText(mComposing, 1);
             }
             postUpdateSuggestions();
@@ -1847,6 +1856,11 @@ public class LatinIME extends InputMethodService
             final int length = word.length();
             // Don't add very short or very long words.
             if (length < 2 || length > getMaxWordLength()) return;
+            if (mWord.isAutoCapitalized()) {
+                // Remove caps before adding
+                word = Character.toLowerCase(word.charAt(0))
+                        + word.substring(1);
+            }
             int freq = getWordFrequency(word);
             freq = freq < 0 ? addFrequency : freq + addFrequency;
             super.addWord(word, freq);

src/com/android/inputmethod/latin/WordComposer.java

@@ -37,6 +37,8 @@ public class WordComposer {
 
     private int mCapsCount;
 
+    private boolean mAutoCapitalized;
+    
     /**
      * Whether the user chose to capitalize the word.
      */
@@ -152,4 +154,21 @@ public class WordComposer {
     public boolean isMostlyCaps() {
         return mCapsCount > 1;
     }
+
+    /** 
+     * Saves the reason why the word is capitalized - whether it was automatic or
+     * due to the user hitting shift in the middle of a sentence.
+     * @param auto whether it was an automatic capitalization due to start of sentence
+     */
+    public void setAutoCapitalized(boolean auto) {
+        mAutoCapitalized = auto;
+    }
+
+    /**
+     * Returns whether the word was automatically capitalized.
+     * @return whether the word was automatically capitalized
+     */
+    public boolean isAutoCapitalized() {
+        return mAutoCapitalized;
+    }
 }