Move all the shared Screen Lock details into a reusable utility class

Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.security.ChangeScreenLockPreferenceControllerTest
Test: atest SettingsUnitTests:ScreenLockPreferenceDetailsUtilsTest

Bug: 215515298
Change-Id: I46543d35ce4dc2fee85ad1c55886b272de113768

src/com/android/settings/security/ScreenLockPreferenceDetailsUtils.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2022 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.security;
+
+import android.app.admin.DevicePolicyManager;
+import android.content.Context;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.os.storage.StorageManager;
+
+import androidx.annotation.StringRes;
+
+import com.android.internal.widget.LockPatternUtils;
+import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settings.core.SubSettingLauncher;
+import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.password.ChooseLockGeneric.ChooseLockGenericFragment;
+import com.android.settings.security.screenlock.ScreenLockSettings;
+import com.android.settingslib.RestrictedLockUtils;
+import com.android.settingslib.transition.SettingsTransitionHelper;
+
+/**
+ * Utilities for screen lock details shared between Security Settings and Safety Center.
+ */
+public class ScreenLockPreferenceDetailsUtils {
+
+    private final int mUserId = UserHandle.myUserId();
+    private final Context mContext;
+    private final LockPatternUtils mLockPatternUtils;
+    private final int mProfileChallengeUserId;
+    private final UserManager mUm;
+    private final int mSourceMetricsCategory;
+
+    public ScreenLockPreferenceDetailsUtils(Context context, int sourceMetricsCategory) {
+        mContext = context;
+        mUm = context.getSystemService(UserManager.class);
+        mLockPatternUtils = FeatureFactory.getFactory(context)
+                .getSecurityFeatureProvider()
+                .getLockPatternUtils(context);
+        mProfileChallengeUserId = Utils.getManagedProfileId(mUm, mUserId);
+        mSourceMetricsCategory = sourceMetricsCategory;
+    }
+
+    /**
+     * Returns whether the screen lock settings entity should be shown.
+     */
+    public boolean isAvailable() {
+        return mContext.getResources().getBoolean(R.bool.config_show_unlock_set_or_change);
+    }
+
+    /**
+     * Returns the summary of screen lock settings entity.
+     */
+    public String getSummary(int userId) {
+        final Integer summaryResId = getSummaryResId(userId);
+        return summaryResId != null ? mContext.getResources().getString(summaryResId) : null;
+    }
+
+    /**
+     * Returns whether the password quality is managed by device admin.
+     */
+    public boolean isPasswordQualityManaged(int userId, RestrictedLockUtils.EnforcedAdmin admin) {
+        final DevicePolicyManager dpm = (DevicePolicyManager) mContext
+                .getSystemService(Context.DEVICE_POLICY_SERVICE);
+        return admin != null && dpm.getPasswordQuality(admin.component, userId)
+                == DevicePolicyManager.PASSWORD_QUALITY_MANAGED;
+    }
+
+    /**
+     * Returns whether the Gear Menu should be shown.
+     */
+    public boolean shouldShowGearMenu() {
+        return mLockPatternUtils.isSecure(mUserId);
+    }
+
+    /**
+     * Launches the {@link ScreenLockSettings}.
+     */
+    public void openScreenLockSettings() {
+        new SubSettingLauncher(mContext)
+                .setDestination(ScreenLockSettings.class.getName())
+                .setSourceMetricsCategory(mSourceMetricsCategory)
+                .launch();
+    }
+
+    /**
+     * Tries to launch the {@link ChooseLockGenericFragment} if Quiet Mode is not enabled
+     * for managed profile, otherwise shows a dialog to disable the Quiet Mode.
+     *
+     * @return true if the {@link ChooseLockGenericFragment} is launching.
+     */
+    public boolean openChooseLockGenericFragment() {
+        // TODO(b/35930129): Remove once existing password can be passed into vold directly.
+        // Currently we need this logic to ensure that the QUIET_MODE is off for any work
+        // profile with unified challenge on FBE-enabled devices. Otherwise, vold would not be
+        // able to complete the operation due to the lack of (old) encryption key.
+        if (mProfileChallengeUserId != UserHandle.USER_NULL
+                && !mLockPatternUtils.isSeparateProfileChallengeEnabled(mProfileChallengeUserId)
+                && StorageManager.isFileEncryptedNativeOnly()) {
+            if (Utils.startQuietModeDialogIfNecessary(mContext, mUm, mProfileChallengeUserId)) {
+                return false;
+            }
+        }
+
+        new SubSettingLauncher(mContext)
+                .setDestination(ChooseLockGenericFragment.class.getName())
+                .setSourceMetricsCategory(mSourceMetricsCategory)
+                .setTransitionType(SettingsTransitionHelper.TransitionType.TRANSITION_SLIDE)
+                .launch();
+        return true;
+    }
+
+    @StringRes
+    private Integer getSummaryResId(int userId) {
+        if (!mLockPatternUtils.isSecure(userId)) {
+            if (userId == mProfileChallengeUserId
+                    || mLockPatternUtils.isLockScreenDisabled(userId)) {
+                return R.string.unlock_set_unlock_mode_off;
+            } else {
+                return R.string.unlock_set_unlock_mode_none;
+            }
+        } else {
+            int keyguardStoredPasswordQuality =
+                    mLockPatternUtils.getKeyguardStoredPasswordQuality(userId);
+            switch (keyguardStoredPasswordQuality) {
+                case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
+                    return R.string.unlock_set_unlock_mode_pattern;
+                case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
+                case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX:
+                    return R.string.unlock_set_unlock_mode_pin;
+                case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
+                case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
+                case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX:
+                case DevicePolicyManager.PASSWORD_QUALITY_MANAGED:
+                    return R.string.unlock_set_unlock_mode_password;
+                default:
+                    return null;
+            }
+        }
+    }
+}