Don't process recorrection or resets when not shown

Bug: 8954116
Change-Id: Ica27dbfc570643bb81e6cdf34cc7c796ea080d71

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

@@ -90,7 +90,7 @@ import java.util.TreeSet;
 /**
  * Input method implementation for Qwerty'ish keyboard.
  */
-public final class LatinIME extends InputMethodService implements KeyboardActionListener,
+public class LatinIME extends InputMethodService implements KeyboardActionListener,
         SuggestionStripView.Listener, TargetApplicationGetter.OnTargetApplicationKnownListener,
         Suggest.SuggestInitializationListener {
     private static final String TAG = LatinIME.class.getSimpleName();
@@ -188,6 +188,8 @@ public final class LatinIME extends InputMethodService implements KeyboardAction
     // Keeps track of most recently inserted text (multi-character key) for reverting
     private String mEnteredText;
 
+    // TODO: This boolean is persistent state and causes large side effects at unexpected times.
+    // Find a way to remove it for readability.
     private boolean mIsAutoCorrectionIndicatorOn;
 
     private AlertDialog mOptionsDialog;
@@ -902,7 +904,12 @@ public final class LatinIME extends InputMethodService implements KeyboardAction
         // we know for sure the cursor moved while we were composing and we should reset
         // the state.
         final boolean noComposingSpan = composingSpanStart == -1 && composingSpanEnd == -1;
-        if (!mExpectingUpdateSelection
+        // If the keyboard is not visible, we don't need to do all the housekeeping work, as it
+        // will be reset when the keyboard shows up anyway.
+        // TODO: revisit this when LatinIME supports hardware keyboards.
+        // NOTE: the test harness subclasses LatinIME and overrides isInputViewShown().
+        // TODO: find a better way to simulate actual execution.
+        if (isInputViewShown() && !mExpectingUpdateSelection
                 && !mConnection.isBelatedExpectedUpdate(oldSelStart, newSelStart)) {
             // TAKE CARE: there is a race condition when we enter this test even when the user
             // did not explicitly move the cursor. This happens when typing fast, where two keys
@@ -2507,7 +2514,10 @@ public final class LatinIME extends InputMethodService implements KeyboardAction
 
         // Note that it's very important here that suggestedWords.mWillAutoCorrect is false.
         // We never want to auto-correct on a resumed suggestion. Please refer to the three
-        // places above where suggestedWords is affected.
+        // places above where suggestedWords is affected. We also need to reset
+        // mIsAutoCorrectionIndicatorOn to avoid showSuggestionStrip touching the text to adapt it.
+        // TODO: remove mIsAutoCorrectionIndicator on (see comment on definition)
+        mIsAutoCorrectionIndicatorOn = false;
         showSuggestionStrip(suggestedWords, typedWord);
     }
 

tests/src/com/android/inputmethod/latin/InputTestsBase.java

@@ -39,7 +39,7 @@ import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
 
 import java.util.Locale;
 
-public class InputTestsBase extends ServiceTestCase<LatinIME> {
+public class InputTestsBase extends ServiceTestCase<LatinIMEForTests> {
 
     private static final String PREF_DEBUG_MODE = "debug_mode";
 
@@ -121,7 +121,7 @@ public class InputTestsBase extends ServiceTestCase<LatinIME> {
     }
 
     public InputTestsBase() {
-        super(LatinIME.class);
+        super(LatinIMEForTests.class);
     }
 
     // TODO: Isn't there a way to make this generic somehow? We can take a <T> and return a <T>

tests/src/com/android/inputmethod/latin/LatinIMEForTests.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.inputmethod.latin;
+
+public class LatinIMEForTests extends LatinIME {
+    @Override
+    public boolean isInputViewShown() {
+        return true;
+    }
+}