Refactor CaptionAppearanceFragment to improve maintainability (3/n)

Root cause: There is a bunch of different logic of preferences in CaptionAppearanceFragment. It’s hard to implement new features and hard to maintain and hard to be testable. Solution: Move out color and edge preference logic of CaptionAppearanceFragment into controllers to reduce the complexity of the relationship between preference and fragment. Bug: 197695932 Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.accessibility Change-Id: I8ed80b445a0d376a7e9dda87feda82420a78a9da
2022-07-11 13:01:46 +08:00
parent 2675dbf54a
commit 16fbfe4e14
22 changed files with 1769 additions and 161 deletions
--- a/src/com/android/settings/accessibility/CaptionForegroundOpacityController.java
+++ b/src/com/android/settings/accessibility/CaptionForegroundOpacityController.java
@@ -0,0 +1,68 @@
+/*
+ * 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.accessibility;
+
+import android.content.Context;
+import android.content.res.Resources;
+
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.accessibility.ListDialogPreference.OnValueChangedListener;
+import com.android.settings.core.BasePreferenceController;
+
+/** Preference controller for caption foreground opacity. */
+public class CaptionForegroundOpacityController extends BasePreferenceController
+        implements OnValueChangedListener {
+
+    private final CaptionHelper mCaptionHelper;
+
+    public CaptionForegroundOpacityController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+        mCaptionHelper = new CaptionHelper(context);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        final ColorPreference preference = screen.findPreference(getPreferenceKey());
+        final Resources res = mContext.getResources();
+        final int[] opacityValues = res.getIntArray(R.array.captioning_opacity_selector_values);
+        final String[] opacityTitles = res.getStringArray(
+                R.array.captioning_opacity_selector_titles);
+        preference.setTitles(opacityTitles);
+        preference.setValues(opacityValues);
+        final int foregroundColor = mCaptionHelper.getForegroundColor();
+        final int opacity = CaptionUtils.parseOpacity(foregroundColor);
+        preference.setValue(opacity);
+        preference.setOnValueChangedListener(this);
+    }
+
+    @Override
+    public void onValueChanged(ListDialogPreference preference, int value) {
+        final int foregroundColor = mCaptionHelper.getForegroundColor();
+        final int color = CaptionUtils.parseColor(foregroundColor);
+        final int merged = CaptionUtils.mergeColorOpacity(color, value);
+        mCaptionHelper.setForegroundColor(merged);
+        mCaptionHelper.setEnabled(true);
+    }
+}