1 files changed, 160 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/compat/CompatUtils.java b/java/src/com/android/inputmethod/compat/CompatUtils.java
new file mode 100644
index 000000000..0b532f7f0
--- /dev/null
+++ b/java/src/com/android/inputmethod/compat/CompatUtils.java
@@ -0,0 +1,160 @@
+/*
+ * 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.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;
+import java.util.ArrayList;
+import java.util.List;
+
+public class CompatUtils {
+    private static final String TAG = CompatUtils.class.getSimpleName();
+    private static final String EXTRA_INPUT_METHOD_ID = "input_method_id";
+    // TODO: Can these be constants instead of literal String constants?
+    private static final String INPUT_METHOD_SUBTYPE_SETTINGS =
+            "android.settings.INPUT_METHOD_SUBTYPE_SETTINGS";
+    private static final String INPUT_LANGUAGE_SELECTION =
+            "com.android.inputmethod.latin.INPUT_LANGUAGE_SELECTION";
+
+    public static Intent getInputLanguageSelectionIntent(String inputMethodId,
+            int flagsForSubtypeSettings) {
+        final String action;
+        Intent intent;
+        if (InputMethodServiceCompatWrapper.CAN_HANDLE_ON_CURRENT_INPUT_METHOD_SUBTYPE_CHANGED
+                /* android.os.Build.VERSION_CODES.HONEYCOMB */
+                && android.os.Build.VERSION.SDK_INT >=  11) {
+            // Refer to android.provider.Settings.ACTION_INPUT_METHOD_SUBTYPE_SETTINGS
+            action = INPUT_METHOD_SUBTYPE_SETTINGS;
+            intent = new Intent(action);
+            if (!TextUtils.isEmpty(inputMethodId)) {
+                intent.putExtra(EXTRA_INPUT_METHOD_ID, inputMethodId);
+            }
+            if (flagsForSubtypeSettings > 0) {
+                intent.setFlags(flagsForSubtypeSettings);
+            }
+        } else {
+            action = INPUT_LANGUAGE_SELECTION;
+            intent = new Intent(action);
+        }
+        return intent;
+    }
+
+    public static Class<?> getClass(String className) {
+        try {
+            return Class.forName(className);
+        } catch (ClassNotFoundException e) {
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class<?> targetClass, String name,
+            Class<?>... parameterTypes) {
+        if (targetClass == null || TextUtils.isEmpty(name)) return null;
+        try {
+            return targetClass.getMethod(name, parameterTypes);
+        } catch (SecurityException e) {
+            // ignore
+            return null;
+        } catch (NoSuchMethodException e) {
+            // ignore
+            return null;
+        }
+    }
+
+    public static Field getField(Class<?> targetClass, String name) {
+        try {
+            return targetClass.getField(name);
+        } catch (SecurityException e) {
+            // ignore
+            return null;
+        } catch (NoSuchFieldException e) {
+            // ignore
+            return null;
+        }
+    }
+
+    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;
+        try {
+            return method.invoke(receiver, args);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Exception in invoke: IllegalArgumentException");
+            return defaultValue;
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Exception in invoke: IllegalAccessException");
+            return defaultValue;
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Exception in invoke: IllegalTargetException");
+            return defaultValue;
+        }
+    }
+
+    public static Object getFieldValue(Object receiver, Object defaultValue, Field field) {
+        if (receiver == null || field == null) return defaultValue;
+        try {
+            return field.get(receiver);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Exception in getFieldValue: IllegalArgumentException");
+            return defaultValue;
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Exception in getFieldValue: IllegalAccessException");
+            return defaultValue;
+        }
+    }
+
+    public static void setFieldValue(Object receiver, Field field, Object value) {
+        if (receiver == null || field == null) return;
+        try {
+            field.set(receiver, value);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Exception in setFieldValue: IllegalArgumentException");
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Exception in setFieldValue: IllegalAccessException");
+        }
+    }
+
+    public static List<InputMethodSubtypeCompatWrapper> copyInputMethodSubtypeListToWrapper(
+            Object listObject) {
+        if (!(listObject instanceof List<?>)) return null;
+        final List<InputMethodSubtypeCompatWrapper> subtypes =
+                new ArrayList<InputMethodSubtypeCompatWrapper>();
+        for (Object o: (List<?>)listObject) {
+            subtypes.add(new InputMethodSubtypeCompatWrapper(o));
+        }
+        return subtypes;
+    }
+}