1 files changed, 119 insertions, 0 deletions
diff --git a/adservices/apk/java/com/android/adservices/ui/settings/delegates/TopicsActionDelegate.java b/adservices/apk/java/com/android/adservices/ui/settings/delegates/TopicsActionDelegate.java
new file mode 100644
index 0000000000..2d3e95754c
--- /dev/null
+++ b/adservices/apk/java/com/android/adservices/ui/settings/delegates/TopicsActionDelegate.java
@@ -0,0 +1,119 @@
+/*
+ * 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.adservices.ui.settings.delegates;
+
+import android.content.Intent;
+import android.util.Pair;
+import android.view.View;
+
+import androidx.lifecycle.Observer;
+
+import com.android.adservices.api.R;
+import com.android.adservices.data.topics.Topic;
+import com.android.adservices.service.PhFlags;
+import com.android.adservices.ui.settings.DialogManager;
+import com.android.adservices.ui.settings.activities.BlockedTopicsActivity;
+import com.android.adservices.ui.settings.activities.TopicsActivity;
+import com.android.adservices.ui.settings.fragments.AdServicesSettingsTopicsFragment;
+import com.android.adservices.ui.settings.viewmodels.TopicsViewModel;
+import com.android.adservices.ui.settings.viewmodels.TopicsViewModel.TopicsViewModelUiEvent;
+
+/**
+ * Delegate class that helps AdServices Settings fragments to respond to all view model/user events.
+ */
+public class TopicsActionDelegate extends BaseActionDelegate {
+    private final TopicsActivity mTopicsActivity;
+    private final TopicsViewModel mTopicsViewModel;
+
+    public TopicsActionDelegate(TopicsActivity topicsActivity, TopicsViewModel topicsViewModel) {
+        super(topicsActivity);
+        mTopicsActivity = topicsActivity;
+        mTopicsViewModel = topicsViewModel;
+        listenToTopicsViewModelUiEvents();
+    }
+
+    private void listenToTopicsViewModelUiEvents() {
+        Observer<Pair<TopicsViewModelUiEvent, Topic>> observer =
+                eventTopicPair -> {
+                    if (eventTopicPair == null) {
+                        return;
+                    }
+                    TopicsViewModelUiEvent event = eventTopicPair.first;
+                    Topic topic = eventTopicPair.second;
+                    if (event == null) {
+                        return;
+                    }
+                    try {
+                        switch (event) {
+                            case BLOCK_TOPIC:
+                                logUIAction(ActionEnum.BLOCK_TOPIC_SELECTED);
+                                if (PhFlags.getInstance().getUIDialogsFeatureEnabled()) {
+                                    DialogManager.showBlockTopicDialog(
+                                            mTopicsActivity, mTopicsViewModel, topic);
+                                } else {
+                                    mTopicsViewModel.revokeTopicConsent(topic);
+                                }
+                                break;
+                            case RESET_TOPICS:
+                                logUIAction(ActionEnum.RESET_TOPIC_SELECTED);
+                                if (PhFlags.getInstance().getUIDialogsFeatureEnabled()) {
+                                    DialogManager.showResetTopicDialog(
+                                            mTopicsActivity, mTopicsViewModel);
+                                } else {
+                                    mTopicsViewModel.resetTopics();
+                                }
+                                break;
+                            case DISPLAY_BLOCKED_TOPICS_FRAGMENT:
+                                Intent intent =
+                                        new Intent(mTopicsActivity, BlockedTopicsActivity.class);
+                                mTopicsActivity.startActivity(intent);
+                                break;
+                        }
+                    } finally {
+                        mTopicsViewModel.uiEventHandled();
+                    }
+                };
+        mTopicsViewModel.getUiEvents().observe(mTopicsActivity, observer);
+    }
+
+    /**
+     * Configure all UI elements (except topics list) in {@link AdServicesSettingsTopicsFragment} to
+     * handle user actions.
+     */
+    public void initTopicsFragment(AdServicesSettingsTopicsFragment fragment) {
+        mTopicsActivity.setTitle(R.string.settingsUI_topics_view_title);
+        configureBlockedTopicsFragmentButton(fragment);
+        configureResetTopicsButton(fragment);
+    }
+
+    private void configureBlockedTopicsFragmentButton(AdServicesSettingsTopicsFragment fragment) {
+        View blockedTopicsButton = fragment.requireView().findViewById(R.id.blocked_topics_button);
+        View blockedTopicsWhenEmptyListButton =
+                fragment.requireView().findViewById(R.id.blocked_topics_when_empty_state_button);
+
+        blockedTopicsButton.setOnClickListener(
+                view -> mTopicsViewModel.blockedTopicsFragmentButtonClickHandler());
+        blockedTopicsWhenEmptyListButton.setOnClickListener(
+                view -> mTopicsViewModel.blockedTopicsFragmentButtonClickHandler());
+    }
+
+    private void configureResetTopicsButton(AdServicesSettingsTopicsFragment fragment) {
+        View resetTopicsButton = fragment.requireView().findViewById(R.id.reset_topics_button);
+
+        resetTopicsButton.setOnClickListener(
+                view -> mTopicsViewModel.resetTopicsButtonClickHandler());
+    }
+}