1 files changed, 227 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java b/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java
new file mode 100644
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+++ b/java/src/com/android/inputmethod/compat/InputMethodManagerCompatWrapper.java
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+/*
+ * 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 com.android.inputmethod.deprecated.LanguageSwitcherProxy;
+import com.android.inputmethod.latin.LatinIME;
+import com.android.inputmethod.latin.SubtypeSwitcher;
+import com.android.inputmethod.latin.Utils;
+
+import android.content.Context;
+import android.os.IBinder;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.inputmethod.InputMethodInfo;
+import android.view.inputmethod.InputMethodManager;
+
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+
+// TODO: Override this class with the concrete implementation if we need to take care of the
+// performance.
+public class InputMethodManagerCompatWrapper {
+    private static final String TAG = InputMethodManagerCompatWrapper.class.getSimpleName();
+    private static final Method METHOD_getCurrentInputMethodSubtype =
+            CompatUtils.getMethod(InputMethodManager.class, "getCurrentInputMethodSubtype");
+    private static final Method METHOD_getEnabledInputMethodSubtypeList =
+            CompatUtils.getMethod(InputMethodManager.class, "getEnabledInputMethodSubtypeList",
+                    InputMethodInfo.class, boolean.class);
+    private static final Method METHOD_getShortcutInputMethodsAndSubtypes =
+            CompatUtils.getMethod(InputMethodManager.class, "getShortcutInputMethodsAndSubtypes");
+    private static final Method METHOD_setInputMethodAndSubtype =
+            CompatUtils.getMethod(
+                    InputMethodManager.class, "setInputMethodAndSubtype", IBinder.class,
+                    String.class, InputMethodSubtypeCompatWrapper.CLASS_InputMethodSubtype);
+    private static final Method METHOD_switchToLastInputMethod = CompatUtils.getMethod(
+            InputMethodManager.class, "switchToLastInputMethod", IBinder.class);
+
+    private static final InputMethodManagerCompatWrapper sInstance =
+            new InputMethodManagerCompatWrapper();
+
+    public static final boolean SUBTYPE_SUPPORTED;
+
+    static {
+        // This static initializer guarantees that METHOD_getShortcutInputMethodsAndSubtypes is
+        // already instantiated.
+        SUBTYPE_SUPPORTED = METHOD_getShortcutInputMethodsAndSubtypes != null;
+    }
+
+    // For the compatibility, IMM will create dummy subtypes if subtypes are not found.
+    // This is required to be false if the current behavior is broken. For now, it's ok to be true.
+    public static final boolean FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES =
+            !InputMethodServiceCompatWrapper.CAN_HANDLE_ON_CURRENT_INPUT_METHOD_SUBTYPE_CHANGED;
+    private static final String VOICE_MODE = "voice";
+    private static final String KEYBOARD_MODE = "keyboard";
+
+    private InputMethodManager mImm;
+    private LanguageSwitcherProxy mLanguageSwitcherProxy;
+    private String mLatinImePackageName;
+
+    private InputMethodManagerCompatWrapper() {
+    }
+
+    public static InputMethodManagerCompatWrapper getInstance(Context context) {
+        if (sInstance.mImm == null) {
+            sInstance.init(context);
+        }
+        return sInstance;
+    }
+
+    private synchronized void init(Context context) {
+        mImm = (InputMethodManager) context.getSystemService(
+                Context.INPUT_METHOD_SERVICE);
+        if (context instanceof LatinIME) {
+            mLatinImePackageName = context.getPackageName();
+        }
+        mLanguageSwitcherProxy = LanguageSwitcherProxy.getInstance();
+    }
+
+    public InputMethodSubtypeCompatWrapper getCurrentInputMethodSubtype() {
+        if (!SUBTYPE_SUPPORTED) {
+            return new InputMethodSubtypeCompatWrapper(
+                    0, 0, mLanguageSwitcherProxy.getInputLocale().toString(), KEYBOARD_MODE, "");
+        }
+        Object o = CompatUtils.invoke(mImm, null, METHOD_getCurrentInputMethodSubtype);
+        return new InputMethodSubtypeCompatWrapper(o);
+    }
+
+    public List<InputMethodSubtypeCompatWrapper> getEnabledInputMethodSubtypeList(
+            InputMethodInfoCompatWrapper imi, boolean allowsImplicitlySelectedSubtypes) {
+        if (!SUBTYPE_SUPPORTED) {
+            String[] languages = mLanguageSwitcherProxy.getEnabledLanguages(
+                    allowsImplicitlySelectedSubtypes);
+            List<InputMethodSubtypeCompatWrapper> subtypeList =
+                    new ArrayList<InputMethodSubtypeCompatWrapper>();
+            for (String lang: languages) {
+                subtypeList.add(new InputMethodSubtypeCompatWrapper(0, 0, lang, KEYBOARD_MODE, ""));
+            }
+            return subtypeList;
+        }
+        Object retval = CompatUtils.invoke(mImm, null, METHOD_getEnabledInputMethodSubtypeList,
+                (imi != null ? imi.getInputMethodInfo() : null), allowsImplicitlySelectedSubtypes);
+        if (retval == null || !(retval instanceof List<?>) || ((List<?>)retval).isEmpty()) {
+            if (!FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES) {
+                // Returns an empty list
+                return Collections.emptyList();
+            }
+            // Creates dummy subtypes
+            @SuppressWarnings("unused")
+            List<InputMethodSubtypeCompatWrapper> subtypeList =
+                    new ArrayList<InputMethodSubtypeCompatWrapper>();
+            InputMethodSubtypeCompatWrapper keyboardSubtype = getLastResortSubtype(KEYBOARD_MODE);
+            InputMethodSubtypeCompatWrapper voiceSubtype = getLastResortSubtype(VOICE_MODE);
+            if (keyboardSubtype != null) {
+                subtypeList.add(keyboardSubtype);
+            }
+            if (voiceSubtype != null) {
+                subtypeList.add(voiceSubtype);
+            }
+            return subtypeList;
+        }
+        return CompatUtils.copyInputMethodSubtypeListToWrapper(retval);
+    }
+
+    private InputMethodInfoCompatWrapper getLatinImeInputMethodInfo() {
+        if (TextUtils.isEmpty(mLatinImePackageName))
+            return null;
+        return Utils.getInputMethodInfo(this, mLatinImePackageName);
+    }
+
+    @SuppressWarnings("unused")
+    private InputMethodSubtypeCompatWrapper getLastResortSubtype(String mode) {
+        if (VOICE_MODE.equals(mode) && !FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES)
+            return null;
+        Locale inputLocale = SubtypeSwitcher.getInstance().getInputLocale();
+        if (inputLocale == null)
+            return null;
+        return new InputMethodSubtypeCompatWrapper(0, 0, inputLocale.toString(), mode, "");
+    }
+
+    public Map<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>>
+            getShortcutInputMethodsAndSubtypes() {
+        Object retval = CompatUtils.invoke(mImm, null, METHOD_getShortcutInputMethodsAndSubtypes);
+        if (retval == null || !(retval instanceof Map<?, ?>) || ((Map<?, ?>)retval).isEmpty()) {
+            if (!FORCE_ENABLE_VOICE_EVEN_WITH_NO_VOICE_SUBTYPES) {
+                // Returns an empty map
+                return Collections.emptyMap();
+            }
+            // Creates dummy subtypes
+            @SuppressWarnings("unused")
+            InputMethodInfoCompatWrapper imi = getLatinImeInputMethodInfo();
+            InputMethodSubtypeCompatWrapper voiceSubtype = getLastResortSubtype(VOICE_MODE);
+            if (imi != null && voiceSubtype != null) {
+                Map<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>>
+                        shortcutMap =
+                                new HashMap<InputMethodInfoCompatWrapper,
+                                        List<InputMethodSubtypeCompatWrapper>>();
+                List<InputMethodSubtypeCompatWrapper> subtypeList =
+                        new ArrayList<InputMethodSubtypeCompatWrapper>();
+                subtypeList.add(voiceSubtype);
+                shortcutMap.put(imi, subtypeList);
+                return shortcutMap;
+            } else {
+                return Collections.emptyMap();
+            }
+        }
+        Map<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>> shortcutMap =
+                new HashMap<InputMethodInfoCompatWrapper, List<InputMethodSubtypeCompatWrapper>>();
+        final Map<?, ?> retvalMap = (Map<?, ?>)retval;
+        for (Object key : retvalMap.keySet()) {
+            if (!(key instanceof InputMethodInfo)) {
+                Log.e(TAG, "Class type error.");
+                return null;
+            }
+            shortcutMap.put(new InputMethodInfoCompatWrapper((InputMethodInfo)key),
+                    CompatUtils.copyInputMethodSubtypeListToWrapper(retvalMap.get(key)));
+        }
+        return shortcutMap;
+    }
+
+    public void setInputMethodAndSubtype(
+            IBinder token, String id, InputMethodSubtypeCompatWrapper subtype) {
+        if (subtype != null && subtype.hasOriginalObject()) {
+            CompatUtils.invoke(mImm, null, METHOD_setInputMethodAndSubtype,
+                    token, id, subtype.getOriginalObject());
+        }
+    }
+
+    public boolean switchToLastInputMethod(IBinder token) {
+        if (SubtypeSwitcher.getInstance().isDummyVoiceMode()) {
+            return true;
+        }
+        return (Boolean)CompatUtils.invoke(mImm, false, METHOD_switchToLastInputMethod, token);
+    }
+
+    public List<InputMethodInfoCompatWrapper> getEnabledInputMethodList() {
+        if (mImm == null) return null;
+        List<InputMethodInfoCompatWrapper> imis = new ArrayList<InputMethodInfoCompatWrapper>();
+        for (InputMethodInfo imi : mImm.getEnabledInputMethodList()) {
+            imis.add(new InputMethodInfoCompatWrapper(imi));
+        }
+        return imis;
+    }
+
+    public void showInputMethodPicker() {
+        if (mImm == null) return;
+        mImm.showInputMethodPicker();
+    }
+}