[SIM Dialog Migration] Migrate SIM enable dialog from LPA to Settings

Migrates SIM enabling and DSDS dialog from LPA to Settings.
Design: https://docs.google.com/document/d/1wb5_hoBkZVbkXGNWHbx4Jf61swjfxsJzkytiTzJosYo/edit?usp=sharing
Bug: 160819390
Test: Manually tested eSIM profile enabling.

Change-Id: I9ce690a1594adfc90b62840819237acd54418469

src/com/android/settings/network/SwitchSlotSidecar.java

@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2020 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.settings.network;
+
+import android.annotation.IntDef;
+import android.app.FragmentManager;
+import android.os.Bundle;
+import android.util.Log;
+
+import com.android.settings.AsyncTaskSidecar;
+import com.android.settings.SidecarFragment;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.annotation.Nullable;
+
+/** {@link SidecarFragment} to switch SIM slot. */
+public class SwitchSlotSidecar
+        extends AsyncTaskSidecar<SwitchSlotSidecar.Param, SwitchSlotSidecar.Result> {
+    private static final String TAG = "SwitchSlotSidecar";
+
+    /** Commands */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef({
+        Command.SWITCH_TO_REMOVABLE_SIM,
+    })
+    private @interface Command {
+        int SWITCH_TO_REMOVABLE_SIM = 0;
+    }
+
+    static class Param {
+        @Command int command;
+        int slotId;
+    }
+
+    static class Result {
+        Exception exception;
+    }
+
+    /** Returns a SwitchSlotSidecar sidecar instance. */
+    public static SwitchSlotSidecar get(FragmentManager fm) {
+        return SidecarFragment.get(fm, TAG, SwitchSlotSidecar.class, null /* args */);
+    }
+
+    @Nullable private Exception mException;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    /** Starts switching to the removable slot. */
+    public void runSwitchToRemovableSlot(int id) {
+        Param param = new Param();
+        param.command = Command.SWITCH_TO_REMOVABLE_SIM;
+        param.slotId = id;
+        super.run(param);
+    }
+
+    /**
+     * Returns the exception thrown during the execution of a command. Will be null in any state
+     * other than {@link State#SUCCESS}, and may be null in that state if there was not an error.
+     */
+    @Nullable
+    public Exception getException() {
+        return mException;
+    }
+
+    @Override
+    protected Result doInBackground(@Nullable Param param) {
+        Result result = new Result();
+        if (param == null) {
+            result.exception = new UiccSlotsException("Null param");
+            return result;
+        }
+        try {
+            switch (param.command) {
+                case Command.SWITCH_TO_REMOVABLE_SIM:
+                    UiccSlotUtil.switchToRemovableSlot(param.slotId, getContext());
+                    break;
+                default:
+                    Log.e(TAG, "Wrong command.");
+                    break;
+            }
+        } catch (UiccSlotsException e) {
+            result.exception = e;
+        }
+        return result;
+    }
+
+    @Override
+    protected void onPostExecute(Result result) {
+        if (result.exception == null) {
+            setState(State.SUCCESS, Substate.UNUSED);
+        } else {
+            mException = result.exception;
+            setState(State.ERROR, Substate.UNUSED);
+        }
+    }
+}