Migrate "duration for quick settings" to new modes page.

This mostly continues to use the existing dialogs in settingslib (ZenDurationDialog, SettingsEnableZenModeDialog) and creates a controller to read from the settings value.

Also updates the "turn on / turn off" button to respect the preferred duration.

Flag: android.app.modes_ui
Bug: 343444249
Test: ZenModeButtonPreferenceControllerTest, ManualDurationPreferenceControllerTest
Change-Id: I2fd49a79d9a5807fefdd7ec310a6cc60d70f9bb1

src/com/android/settings/notification/modes/ManualDurationHelper.java

@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2024 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.notification.modes;
+
+import android.annotation.Nullable;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.icu.text.MessageFormat;
+import android.net.Uri;
+import android.provider.Settings;
+
+import androidx.annotation.NonNull;
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+
+/**
+ * Class to contain shared utilities for reading and observing the Settings ZEN_DURATION value.
+ */
+class ManualDurationHelper {
+    private Context mContext;
+
+    ManualDurationHelper(@NonNull Context context) {
+        mContext = context;
+    }
+
+    int getZenDuration() {
+        return Settings.Secure.getInt(mContext.getContentResolver(), Settings.Secure.ZEN_DURATION,
+                0);
+    }
+
+    /**
+     * Generates a summary of the duration that manual DND will be on when turned on from
+     * quick settings, for example "Until you turn off" or "[number] hours", based on the given
+     * setting value.
+     */
+    public String getSummary() {
+        int zenDuration = getZenDuration();
+        String summary;
+        if (zenDuration < 0) {
+            summary = mContext.getString(R.string.zen_mode_duration_summary_always_prompt);
+        } else if (zenDuration == 0) {
+            summary = mContext.getString(R.string.zen_mode_duration_summary_forever);
+        } else {
+            if (zenDuration >= 60) {
+                MessageFormat msgFormat = new MessageFormat(
+                        mContext.getString(R.string.zen_mode_duration_summary_time_hours),
+                        Locale.getDefault());
+                Map<String, Object> msgArgs = new HashMap<>();
+                msgArgs.put("count", zenDuration / 60);
+                summary = msgFormat.format(msgArgs);
+            } else {
+                MessageFormat msgFormat = new MessageFormat(
+                        mContext.getString(R.string.zen_mode_duration_summary_time_minutes),
+                        Locale.getDefault());
+                Map<String, Object> msgArgs = new HashMap<>();
+                msgArgs.put("count", zenDuration);
+                summary = msgFormat.format(msgArgs);
+            }
+        }
+        return summary;
+    }
+
+    SettingsObserver makeSettingsObserver(@NonNull AbstractZenModePreferenceController controller) {
+        return new SettingsObserver(controller);
+    }
+
+    final class SettingsObserver extends ContentObserver {
+        private static final Uri ZEN_MODE_DURATION_URI = Settings.Secure.getUriFor(
+                Settings.Secure.ZEN_DURATION);
+
+        private final AbstractZenModePreferenceController mPrefController;
+        private Preference mPreference;
+
+        /**
+         * Create a settings observer attached to the provided PreferenceController, whose
+         * updateState method should be called onChange.
+         */
+        SettingsObserver(@NonNull AbstractZenModePreferenceController prefController) {
+            super(mContext.getMainExecutor(), 0);
+            mPrefController = prefController;
+        }
+
+        void setPreference(Preference preference) {
+            mPreference = preference;
+        }
+
+        public void register() {
+            mContext.getContentResolver().registerContentObserver(ZEN_MODE_DURATION_URI, false,
+                    this);
+        }
+
+        public void unregister() {
+            mContext.getContentResolver().unregisterContentObserver(this);
+        }
+
+        @Override
+        public void onChange(boolean selfChange, @Nullable Uri uri) {
+            super.onChange(selfChange, uri);
+            if (ZEN_MODE_DURATION_URI.equals(uri) && mPreference != null) {
+                mPrefController.updateState(mPreference);
+            }
+        }
+    }
+}