[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/UiccSlotUtil.java

@@ -0,0 +1,153 @@
+/*
+ * 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.content.Context;
+import android.telephony.TelephonyManager;
+import android.telephony.UiccSlotInfo;
+import android.util.Log;
+
+import com.android.settingslib.utils.ThreadUtils;
+
+import com.google.common.collect.ImmutableList;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+public class UiccSlotUtil {
+
+    private static final String TAG = "UiccSlotUtil";
+
+    // TODO(b/171846124): Pass timeout value from LPA to Settings
+    private static final long WAIT_AFTER_SWITCH_TIMEOUT_MILLIS = 25000;
+
+    public static final int INVALID_PHYSICAL_SLOT_ID = -1;
+
+    /**
+     * Mode for switching to eSIM slot which decides whether there is cleanup process, e.g.
+     * disabling test profile, after eSIM slot is activated and whether we will wait it finished.
+     */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef({
+        SwitchingEsimMode.NO_CLEANUP,
+        SwitchingEsimMode.ASYNC_CLEANUP,
+        SwitchingEsimMode.SYNC_CLEANUP
+    })
+    public @interface SwitchingEsimMode {
+        /** No cleanup process after switching to eSIM slot */
+        int NO_CLEANUP = 0;
+        /** Has cleanup process, but we will not wait it finished. */
+        int ASYNC_CLEANUP = 1;
+        /** Has cleanup process and we will wait until it's finished */
+        int SYNC_CLEANUP = 2;
+    }
+
+    /**
+     * Returns an immutable list of all UICC slots. If TelephonyManager#getUiccSlotsInfo returns, it
+     * returns an empty list instead.
+     */
+    public static ImmutableList<UiccSlotInfo> getSlotInfos(TelephonyManager telMgr) {
+        UiccSlotInfo[] slotInfos = telMgr.getUiccSlotsInfo();
+        if (slotInfos == null) {
+            return ImmutableList.of();
+        }
+        return ImmutableList.copyOf(slotInfos);
+    }
+
+    /**
+     * Switches to the removable slot. It waits for SIM_STATE_LOADED after switch. If slotId is
+     * INVALID_PHYSICAL_SLOT_ID, the method will use the first detected inactive removable slot.
+     *
+     * @param slotId the physical removable slot id.
+     * @param context the application context.
+     * @throws UiccSlotsException if there is an error.
+     */
+    public static synchronized void switchToRemovableSlot(int slotId, Context context)
+            throws UiccSlotsException {
+        if (ThreadUtils.isMainThread()) {
+            throw new IllegalThreadStateException(
+                    "Do not call switchToRemovableSlot on the main thread.");
+        }
+        TelephonyManager telMgr = context.getSystemService(TelephonyManager.class);
+        if (telMgr.isMultiSimEnabled()) {
+            // If this device supports multiple active slots, don't mess with TelephonyManager.
+            Log.i(TAG, "Multiple active slots supported. Not calling switchSlots.");
+            return;
+        }
+        UiccSlotInfo[] slots = telMgr.getUiccSlotsInfo();
+        if (slotId == INVALID_PHYSICAL_SLOT_ID) {
+            for (int i = 0; i < slots.length; i++) {
+                if (slots[i].isRemovable()
+                        && !slots[i].getIsActive()
+                        && slots[i].getCardStateInfo() != UiccSlotInfo.CARD_STATE_INFO_ERROR
+                        && slots[i].getCardStateInfo() != UiccSlotInfo.CARD_STATE_INFO_RESTRICTED) {
+                    performSwitchToRemovableSlot(i, context);
+                    return;
+                }
+            }
+        } else {
+            if (slotId >= slots.length || !slots[slotId].isRemovable()) {
+                throw new UiccSlotsException("The given slotId is not a removable slot: " + slotId);
+            }
+            if (!slots[slotId].getIsActive()) {
+                performSwitchToRemovableSlot(slotId, context);
+            }
+        }
+    }
+
+    private static void performSwitchToRemovableSlot(int slotId, Context context)
+            throws UiccSlotsException {
+        CarrierConfigChangedReceiver receiver = null;
+        try {
+            CountDownLatch latch = new CountDownLatch(1);
+            receiver = new CarrierConfigChangedReceiver(latch);
+            receiver.registerOn(context);
+            switchSlots(context, slotId);
+            latch.await(WAIT_AFTER_SWITCH_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            Log.e(TAG, "Failed switching to physical slot.", e);
+        } finally {
+            if (receiver != null) {
+                context.unregisterReceiver(receiver);
+            }
+        }
+    }
+
+    /**
+     * Changes the logical slot to physical slot mapping. OEM should override this to provide
+     * device-specific implementation if the device supports switching slots.
+     *
+     * @param context the application context.
+     * @param physicalSlots List of physical slot ids in the order of logical slots.
+     */
+    private static void switchSlots(Context context, int... physicalSlots)
+            throws UiccSlotsException {
+        TelephonyManager telMgr = context.getSystemService(TelephonyManager.class);
+        if (telMgr.isMultiSimEnabled()) {
+            // If this device supports multiple active slots, don't mess with TelephonyManager.
+            Log.i(TAG, "Multiple active slots supported. Not calling switchSlots.");
+            return;
+        }
+        if (!telMgr.switchSlots(physicalSlots)) {
+            throw new UiccSlotsException("Failed to switch slots");
+        }
+    }
+}