1 files changed, 124 insertions, 0 deletions
diff --git a/Settings/src/com/android/tv/settings/inputmethod/InputMethodHelper.java b/Settings/src/com/android/tv/settings/inputmethod/InputMethodHelper.java
new file mode 100644
index 000000000..0101f349c
--- /dev/null
+++ b/Settings/src/com/android/tv/settings/inputmethod/InputMethodHelper.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2021 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.tv.settings.inputmethod;
+
+import android.app.ActivityManager;
+import android.content.Context;
+import android.content.Intent;
+import android.os.RemoteException;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.inputmethod.InputMethodInfo;
+import android.view.inputmethod.InputMethodManager;
+
+import com.android.tv.settings.util.SliceUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Helper class for InputMethod
+ */
+public class InputMethodHelper {
+
+    public static final String TAG = "InputMethodHelper";
+
+    /**
+     * Get list of enabled InputMethod
+     */
+    public static List<InputMethodInfo> getEnabledSystemInputMethodList(Context context) {
+        InputMethodManager inputMethodManager =
+                (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
+        List<InputMethodInfo> enabledInputMethodInfos =
+                new ArrayList<>(inputMethodManager.getEnabledInputMethodList());
+        // Filter auxiliary keyboards out
+        enabledInputMethodInfos.removeIf(InputMethodInfo::isAuxiliaryIme);
+        return enabledInputMethodInfos;
+    }
+
+    /**
+     * Get id of default InputMethod
+     */
+    public static String getDefaultInputMethodId(Context context) {
+        return Settings.Secure.getString(context.getContentResolver(),
+                Settings.Secure.DEFAULT_INPUT_METHOD);
+    }
+
+    /**
+     * Set default InputMethod by id
+     */
+    public static void setDefaultInputMethodId(Context context, String imid) {
+        if (imid == null) {
+            throw new IllegalArgumentException("Null ID");
+        }
+
+        try {
+            int userId = ActivityManager.getService().getCurrentUser().id;
+            Settings.Secure.putStringForUser(context.getContentResolver(),
+                    Settings.Secure.DEFAULT_INPUT_METHOD, imid, userId);
+
+            Intent intent = new Intent(Intent.ACTION_INPUT_METHOD_CHANGED);
+            intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
+            intent.putExtra("input_method_id", imid);
+            context.sendBroadcastAsUser(intent, UserHandle.CURRENT);
+        } catch (RemoteException e) {
+            Log.d(TAG, "set default input method remote exception", e);
+        }
+    }
+
+    /**
+     * Find InputMethod from a List by id.
+     */
+    public static InputMethodInfo findInputMethod(String imid,
+            List<InputMethodInfo> enabledInputMethodInfos) {
+        for (int i = 0, size = enabledInputMethodInfos.size(); i < size; i++) {
+            final InputMethodInfo info = enabledInputMethodInfos.get(i);
+            final String id = info.getId();
+            if (TextUtils.equals(id, imid)) {
+                return info;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Get settings Intent of an InputMethod.
+     */
+    public static Intent getInputMethodSettingsIntent(InputMethodInfo imi) {
+        final Intent intent;
+        final String settingsActivity = imi.getSettingsActivity();
+        if (!TextUtils.isEmpty(settingsActivity)) {
+            intent = new Intent(Intent.ACTION_MAIN);
+            intent.setClassName(imi.getPackageName(), settingsActivity);
+        } else {
+            intent = null;
+        }
+        return intent;
+    }
+
+    /**
+     * Find potential slice provider based on settings activity name.
+     */
+    public static String getInputMethodsSettingsUri(Context context, InputMethodInfo imi) {
+        String sliceUri = "content://" + imi.getPackageName() + ".tv.sliceprovider" + "/general";
+        if (SliceUtils.isSliceProviderValid(context, sliceUri)) {
+            return sliceUri;
+        }
+        return null;
+    }
+}