Added InputConnectionCompatUtils and EditorInfoCompatUtils

Change-Id: Ie69d5e90c4ee978d3ecb40b68e6466082569ca7a

4 files changed, 141 insertions, 12 deletions

diff --git a/java/src/com/android/inputmethod/compat/CompatUtils.java b/java/src/com/android/inputmethod/compat/CompatUtils.java
index 07db4a1bb..a8086919c 100644
--- a/java/src/com/android/inputmethod/compat/CompatUtils.java
+++ b/java/src/com/android/inputmethod/compat/CompatUtils.java
@@ -20,6 +20,7 @@ import android.content.Intent;
 import android.text.TextUtils;
 import android.util.Log;
 
+import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -90,6 +91,19 @@ public class CompatUtils {
         }
     }
 
+    public static Constructor<?> getConstructor(Class<?> targetClass, Class<?>[] types) {
+        if (targetClass == null || types == null) return null;
+        try {
+            return targetClass.getConstructor(types);
+        } catch (SecurityException e) {
+            // ignore
+            return null;
+        } catch (NoSuchMethodException e) {
+            // ignore
+            return null;
+        }
+    }
+
     public static Object invoke(
             Object receiver, Object defaultValue, Method method, Object... args) {
         if (receiver == null || method == null) return defaultValue;
diff --git a/java/src/com/android/inputmethod/compat/EditorInfoCompatUtils.java b/java/src/com/android/inputmethod/compat/EditorInfoCompatUtils.java
new file mode 100644
index 000000000..9d83b5463
--- /dev/null
+++ b/java/src/com/android/inputmethod/compat/EditorInfoCompatUtils.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2011 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.compat;
+
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputConnection;
+
+import java.lang.reflect.Field;
+
+public class EditorInfoCompatUtils {
+    private static final Field FIELD_IME_FLAG_NAVIGATE_NEXT = CompatUtils.getField(
+            EditorInfo.class, "IME_FLAG_NAVIGATE_NEXT");
+    private static final Field FIELD_IME_FLAG_NAVIGATE_PREVIOUS = CompatUtils.getField(
+            EditorInfo.class, "IME_FLAG_NAVIGATE_PREVIOUS");
+    private static final Field FIELD_IME_ACTION_PREVIOUS = CompatUtils.getField(
+            EditorInfo.class, "IME_FLAG_ACTION_PREVIOUS");
+    private static final Integer OBJ_IME_FLAG_NAVIGATE_NEXT = (Integer) CompatUtils
+            .getFieldValue(null, null, FIELD_IME_FLAG_NAVIGATE_NEXT);
+    private static final Integer OBJ_IME_FLAG_NAVIGATE_PREVIOUS = (Integer) CompatUtils
+            .getFieldValue(null, null, FIELD_IME_FLAG_NAVIGATE_PREVIOUS);
+    private static final Integer OBJ_IME_ACTION_PREVIOUS = (Integer) CompatUtils
+            .getFieldValue(null, null, FIELD_IME_ACTION_PREVIOUS);
+
+    public static boolean hasFlagNavigateNext(int imeOptions) {
+        if (OBJ_IME_FLAG_NAVIGATE_NEXT == null)
+            return false;
+        return (imeOptions & OBJ_IME_FLAG_NAVIGATE_NEXT) != 0;
+    }
+
+    public static boolean hasFlagNavigatePrevious(int imeOptions) {
+        if (OBJ_IME_FLAG_NAVIGATE_PREVIOUS == null)
+            return false;
+        return (imeOptions & OBJ_IME_FLAG_NAVIGATE_PREVIOUS) != 0;
+    }
+
+    public static void performEditorActionNext(InputConnection ic) {
+        ic.performEditorAction(EditorInfo.IME_ACTION_NEXT);
+    }
+
+    public static void performEditorActionPrevious(InputConnection ic) {
+        if (OBJ_IME_ACTION_PREVIOUS == null)
+            return;
+        ic.performEditorAction(OBJ_IME_ACTION_PREVIOUS);
+    }
+}
diff --git a/java/src/com/android/inputmethod/compat/InputConnectionCompatUtils.java b/java/src/com/android/inputmethod/compat/InputConnectionCompatUtils.java
new file mode 100644
index 000000000..b4fe32765
--- /dev/null
+++ b/java/src/com/android/inputmethod/compat/InputConnectionCompatUtils.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2011 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.compat;
+
+import android.util.Log;
+import android.view.inputmethod.InputConnection;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class InputConnectionCompatUtils {
+    private static final String TAG = InputConnectionCompatUtils.class.getSimpleName();
+    private static final Class<?> CLASS_CorrectionInfo = CompatUtils
+            .getClass("android.view.inputmethod.CorrectionInfo");
+    private static final Class<?>[] INPUT_TYPE_CorrectionInfo = new Class<?>[] { int.class,
+            CharSequence.class, CharSequence.class };
+    private static final Constructor<?> CONSTRUCTOR_CorrectionInfo = CompatUtils
+            .getConstructor(CLASS_CorrectionInfo, INPUT_TYPE_CorrectionInfo);
+    private static final Method METHOD_InputConnection_commitCorrection = CompatUtils
+            .getMethod(InputConnection.class, "commitCorrection", CLASS_CorrectionInfo);
+
+    public static void commitCorrection(InputConnection ic, int offset, CharSequence oldText,
+            CharSequence newText) {
+        if (ic == null || CONSTRUCTOR_CorrectionInfo == null
+                || METHOD_InputConnection_commitCorrection == null) {
+            return;
+        }
+        Object[] args = { offset, oldText, newText };
+        try {
+            Object correctionInfo = CONSTRUCTOR_CorrectionInfo.newInstance(args);
+            CompatUtils.invoke(ic, null, METHOD_InputConnection_commitCorrection,
+                    correctionInfo);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Error in commitCorrection: IllegalArgumentException");
+        } catch (InstantiationException e) {
+            Log.e(TAG, "Error in commitCorrection: InstantiationException");
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Error in commitCorrection: IllegalAccessException");
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Error in commitCorrection: InvocationTargetException");
+        }
+    }
+}
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index 05169dd9b..c050c834e 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -17,6 +17,8 @@
 package com.android.inputmethod.latin;
 
 import com.android.inputmethod.compat.CompatUtils;
+import com.android.inputmethod.compat.EditorInfoCompatUtils;
+import com.android.inputmethod.compat.InputConnectionCompatUtils;
 import com.android.inputmethod.compat.InputMethodManagerCompatWrapper;
 import com.android.inputmethod.compat.InputMethodServiceCompatWrapper;
 import com.android.inputmethod.deprecated.VoiceProxy;
@@ -64,7 +66,6 @@ import android.view.ViewParent;
 import android.view.Window;
 import android.view.WindowManager;
 import android.view.inputmethod.CompletionInfo;
-import android.view.inputmethod.CorrectionInfo;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.ExtractedText;
 import android.view.inputmethod.ExtractedTextRequest;
@@ -1267,9 +1268,8 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
 
     private void handleTab() {
         final int imeOptions = getCurrentInputEditorInfo().imeOptions;
-        final int navigationFlags =
-                EditorInfo.IME_FLAG_NAVIGATE_NEXT | EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS;
-        if ((imeOptions & navigationFlags) == 0) {
+        if (!EditorInfoCompatUtils.hasFlagNavigateNext(imeOptions)
+                && !EditorInfoCompatUtils.hasFlagNavigatePrevious(imeOptions)) {
             sendDownUpKeyEvents(KeyEvent.KEYCODE_TAB);
             return;
         }
@@ -1280,12 +1280,13 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
 
         // True if keyboard is in either chording shift or manual temporary upper case mode.
         final boolean isManualTemporaryUpperCase = mKeyboardSwitcher.isManualTemporaryUpperCase();
-        if ((imeOptions & EditorInfo.IME_FLAG_NAVIGATE_NEXT) != 0
+        if (EditorInfoCompatUtils.hasFlagNavigateNext(imeOptions)
                 && !isManualTemporaryUpperCase) {
+            EditorInfoCompatUtils.performEditorActionNext(ic);
             ic.performEditorAction(EditorInfo.IME_ACTION_NEXT);
-        } else if ((imeOptions & EditorInfo.IME_FLAG_NAVIGATE_PREVIOUS) != 0
+        } else if (EditorInfoCompatUtils.hasFlagNavigatePrevious(imeOptions)
                 && isManualTemporaryUpperCase) {
-            ic.performEditorAction(EditorInfo.IME_ACTION_PREVIOUS);
+            EditorInfoCompatUtils.performEditorActionPrevious(ic);
         }
     }
 
@@ -1411,11 +1412,8 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
             CharSequence typedWord = mWord.getTypedWord();
             TextEntryState.backToAcceptedDefault(typedWord);
             if (!TextUtils.isEmpty(typedWord) && !typedWord.equals(mBestWord)) {
-                if (ic != null) {
-                    CorrectionInfo correctionInfo = new CorrectionInfo(
-                            mLastSelectionEnd - typedWord.length(), typedWord, mBestWord);
-                    ic.commitCorrection(correctionInfo);
-                }
+                InputConnectionCompatUtils.commitCorrection(
+                        ic,  mLastSelectionEnd - typedWord.length(), typedWord, mBestWord);
                 if (mCandidateView != null)
                     mCandidateView.onAutoCorrectionInverted(mBestWord);
             }