Rename to Kelar Keyboard (org.kelar.inputmethod.latin)

3 files changed, 281 insertions, 0 deletions

diff --git a/java/src/org/kelar/inputmethod/latin/permissions/PermissionsActivity.java b/java/src/org/kelar/inputmethod/latin/permissions/PermissionsActivity.java
new file mode 100644
index 000000000..5c56a2a10
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/permissions/PermissionsActivity.java
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2015 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 org.kelar.inputmethod.latin.permissions;
+
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import androidx.annotation.NonNull;
+import androidx.core.app.ActivityCompat;
+
+/**
+ * An activity to help request permissions. It's used when no other activity is available, e.g. in
+ * InputMethodService. This activity assumes that all permissions are not granted yet.
+ */
+public final class PermissionsActivity
+        extends Activity implements ActivityCompat.OnRequestPermissionsResultCallback {
+
+    /**
+     * Key to retrieve requested permissions from the intent.
+     */
+    public static final String EXTRA_PERMISSION_REQUESTED_PERMISSIONS = "requested_permissions";
+
+    /**
+     * Key to retrieve request code from the intent.
+     */
+    public static final String EXTRA_PERMISSION_REQUEST_CODE = "request_code";
+
+    private static final int INVALID_REQUEST_CODE = -1;
+
+    private int mPendingRequestCode = INVALID_REQUEST_CODE;
+
+    /**
+     * Starts a PermissionsActivity and checks/requests supplied permissions.
+     */
+    public static void run(
+            @NonNull Context context, int requestCode, @NonNull String... permissionStrings) {
+        Intent intent = new Intent(context.getApplicationContext(), PermissionsActivity.class);
+        intent.putExtra(EXTRA_PERMISSION_REQUESTED_PERMISSIONS, permissionStrings);
+        intent.putExtra(EXTRA_PERMISSION_REQUEST_CODE, requestCode);
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
+        context.startActivity(intent);
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mPendingRequestCode = (savedInstanceState != null)
+                ? savedInstanceState.getInt(EXTRA_PERMISSION_REQUEST_CODE, INVALID_REQUEST_CODE)
+                : INVALID_REQUEST_CODE;
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putInt(EXTRA_PERMISSION_REQUEST_CODE, mPendingRequestCode);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        // Only do request when there is no pending request to avoid duplicated requests.
+        if (mPendingRequestCode == INVALID_REQUEST_CODE) {
+            final Bundle extras = getIntent().getExtras();
+            final String[] permissionsToRequest =
+                    extras.getStringArray(EXTRA_PERMISSION_REQUESTED_PERMISSIONS);
+            mPendingRequestCode = extras.getInt(EXTRA_PERMISSION_REQUEST_CODE);
+            // Assuming that all supplied permissions are not granted yet, so that we don't need to
+            // check them again.
+            PermissionsUtil.requestPermissions(this, mPendingRequestCode, permissionsToRequest);
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(
+            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        mPendingRequestCode = INVALID_REQUEST_CODE;
+        PermissionsManager.get(this).onRequestPermissionsResult(
+                requestCode, permissions, grantResults);
+        finish();
+    }
+}
diff --git a/java/src/org/kelar/inputmethod/latin/permissions/PermissionsManager.java b/java/src/org/kelar/inputmethod/latin/permissions/PermissionsManager.java
new file mode 100644
index 000000000..d95f4540d
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/permissions/PermissionsManager.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2015 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 org.kelar.inputmethod.latin.permissions;
+
+import android.app.Activity;
+import android.content.Context;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+/**
+ * Manager to perform permission related tasks. Always call on the UI thread.
+ */
+public class PermissionsManager {
+
+    public interface PermissionsResultCallback {
+        void onRequestPermissionsResult(boolean allGranted);
+    }
+
+    private int mRequestCodeId;
+
+    private final Context mContext;
+    private final Map<Integer, PermissionsResultCallback> mRequestIdToCallback = new HashMap<>();
+
+    private static PermissionsManager sInstance;
+
+    public PermissionsManager(Context context) {
+        mContext = context;
+    }
+
+    @Nonnull
+    public static synchronized PermissionsManager get(@Nonnull Context context) {
+        if (sInstance == null) {
+            sInstance = new PermissionsManager(context);
+        }
+        return sInstance;
+    }
+
+    private synchronized int getNextRequestId() {
+        return ++mRequestCodeId;
+    }
+
+
+    public synchronized void requestPermissions(@Nonnull PermissionsResultCallback callback,
+                                   @Nullable Activity activity,
+                                   String... permissionsToRequest) {
+        List<String> deniedPermissions = PermissionsUtil.getDeniedPermissions(
+                mContext, permissionsToRequest);
+        if (deniedPermissions.isEmpty()) {
+            return;
+        }
+        // otherwise request the permissions.
+        int requestId = getNextRequestId();
+        String[] permissionsArray = deniedPermissions.toArray(
+                new String[deniedPermissions.size()]);
+
+        mRequestIdToCallback.put(requestId, callback);
+        if (activity != null) {
+            PermissionsUtil.requestPermissions(activity, requestId, permissionsArray);
+        } else {
+            PermissionsActivity.run(mContext, requestId, permissionsArray);
+        }
+    }
+
+    public synchronized void onRequestPermissionsResult(
+            int requestCode, String[] permissions, int[] grantResults) {
+        PermissionsResultCallback permissionsResultCallback = mRequestIdToCallback.get(requestCode);
+        mRequestIdToCallback.remove(requestCode);
+
+        boolean allGranted = PermissionsUtil.allGranted(grantResults);
+        permissionsResultCallback.onRequestPermissionsResult(allGranted);
+    }
+}
diff --git a/java/src/org/kelar/inputmethod/latin/permissions/PermissionsUtil.java b/java/src/org/kelar/inputmethod/latin/permissions/PermissionsUtil.java
new file mode 100644
index 000000000..337334485
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/permissions/PermissionsUtil.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2015 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 org.kelar.inputmethod.latin.permissions;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.Build;
+import androidx.annotation.NonNull;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Utility class for permissions.
+ */
+public class PermissionsUtil {
+
+    /**
+     * Returns the list of permissions not granted from the given list of permissions.
+     * @param context Context
+     * @param permissions list of permissions to check.
+     * @return the list of permissions that do not have permission to use.
+     */
+    public static List<String> getDeniedPermissions(Context context,
+                                                          String... permissions) {
+        final List<String> deniedPermissions = new ArrayList<>();
+        for (String permission : permissions) {
+            if (ContextCompat.checkSelfPermission(context, permission)
+                    != PackageManager.PERMISSION_GRANTED) {
+                deniedPermissions.add(permission);
+            }
+        }
+        return deniedPermissions;
+    }
+
+    /**
+     * Uses the given activity and requests the user for permissions.
+     * @param activity activity to use.
+     * @param requestCode request code/id to use.
+     * @param permissions String array of permissions that needs to be requested.
+     */
+    public static void requestPermissions(Activity activity, int requestCode,
+                                          String[] permissions) {
+        ActivityCompat.requestPermissions(activity, permissions, requestCode);
+    }
+
+    /**
+     * Checks if all the permissions are granted.
+     */
+    public static boolean allGranted(@NonNull int[] grantResults) {
+        for (int result : grantResults) {
+            if (result != PackageManager.PERMISSION_GRANTED) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Queries if al the permissions are granted for the given permission strings.
+     */
+    public static boolean checkAllPermissionsGranted(Context context, String... permissions) {
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1) {
+            // For all pre-M devices, we should have all the premissions granted on install.
+            return true;
+        }
+
+        for (String permission : permissions) {
+            if (ContextCompat.checkSelfPermission(context, permission)
+                    != PackageManager.PERMISSION_GRANTED) {
+                return false;
+            }
+        }
+        return true;
+    }
+}