Cherish: Add support for UI Styles

Not a great previewer but for now it'll do the work

[nurkeinneid]:
- adapt to our ThemeUtils
- restore original copyright header - crdroid did nothing here

Change-Id: I432578a4b3c652d7ad3e00a93e11bfb3e199b4a5
Signed-off-by: NurKeinNeid <mralexman3000@gmail.com>
Signed-off-by: Hưng Phan <phandinhhungvp2001@gmail.com>

res/values/cherish_strings.xml

@@ -781,4 +781,8 @@
 	
 	<string name="click_partial_screenshot_title">Click to partial screenshot</string>
     <string name="click_partial_screenshot_summary">Short click Volume Down and Power to take partial screenshot</string>
+	
+	<!-- UI styles -->
+    <string name="theme_customization_ui_style_title">UI Style</string>
+    <string name="theme_customization_ui_style_summary">Set custom style for your interface</string>
 </resources>

res/xml/cherish_settings_theme.xml

@@ -59,6 +59,12 @@
             android:summary="@string/dark_ui_mode_summary"
             android:fragment="com.android.settings.display.darkmode.DarkModeSettingsFragment"
             settings:controller="com.android.settings.display.DarkUIPreferenceController" />
+			
+		<Preference
+            android:key="android.theme.customization.style"
+            android:title="@string/theme_customization_ui_style_title"
+            android:summary="@string/theme_customization_ui_style_summary"
+            android:fragment="com.cherish.settings.fragments.ui.UIStyles"/>
 		 
 		 <!-- QS style -->
     <com.cherish.settings.preferences.SystemSettingListPreference

src/com/cherish/settings/fragments/ui/UIStyles.java

@@ -0,0 +1,264 @@
+/*
+ * Copyright (C) 2021 AospExtended ROM 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.cherish.settings.fragments.ui;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.content.pm.PackageManager;
+import android.graphics.Color;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Looper;
+import android.provider.SearchIndexableResource;
+import android.provider.Settings;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.Gravity;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+import android.text.TextUtils;
+import androidx.preference.PreferenceViewHolder;
+import android.view.ViewGroup.LayoutParams;
+
+import androidx.annotation.ColorInt;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView.ViewHolder;
+import androidx.recyclerview.widget.RecyclerView;
+import android.net.Uri;
+import androidx.core.content.res.ResourcesCompat;
+import androidx.preference.Preference;
+import androidx.preference.Preference.OnPreferenceChangeListener;
+import androidx.preference.PreferenceScreen;
+
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settingslib.search.Indexable;
+import com.android.settings.SettingsPreferenceFragment;
+
+import com.android.internal.util.cherish.ThemeUtils;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Arrays;
+
+import org.json.JSONObject;
+import org.json.JSONException;
+
+public class UIStyles extends SettingsPreferenceFragment {
+
+    private RecyclerView mRecyclerView;
+    private ThemeUtils mThemeUtils;
+    private String mCategory = "android.theme.customization.style.android";
+
+    private List<String> mPkgs;
+
+    private ExecutorService mExecutor = Executors.newSingleThreadExecutor();
+    private Handler mHandler = new Handler();
+    private final AtomicBoolean mApplyingOverlays = new AtomicBoolean(false);
+
+    Map<String, String> overlayMap = new HashMap<String, String>();
+    {
+        overlayMap.put("com.android.settings", "android.theme.customization.style.settings");
+        overlayMap.put("com.android.systemui", "android.theme.customization.style.systemui");
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        getActivity().setTitle(R.string.theme_customization_ui_style_title);
+
+        mThemeUtils = new ThemeUtils(getActivity());
+        mPkgs = mThemeUtils.getOverlayPackagesForCategory(mCategory, "android");
+        Collections.sort(mPkgs);
+    }
+
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
+            @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(
+                R.layout.item_view, container, false);
+
+        mRecyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
+        GridLayoutManager gridLayoutManager = new GridLayoutManager(getActivity(), 1);
+        mRecyclerView.setLayoutManager(gridLayoutManager);
+        Adapter mAdapter = new Adapter(getActivity());
+        mRecyclerView.setAdapter(mAdapter);
+
+        return view;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsEvent.CHERISH_SETTINGS;
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+    }
+
+    public class Adapter extends RecyclerView.Adapter<Adapter.CustomViewHolder> {
+        Context context;
+        String mSelectedPkg;
+        String mAppliedPkg;
+
+        public Adapter(Context context) {
+            this.context = context;
+        }
+
+        @Override
+        public CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+            View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.fonts_option, parent, false);
+            CustomViewHolder vh = new CustomViewHolder(v);
+            return vh;
+        }
+
+        @Override
+        public void onBindViewHolder(CustomViewHolder holder, final int position) {
+            String pkg = mPkgs.get(position);
+            String label = getLabel(holder.itemView.getContext(), pkg);
+
+            String currentPackageName = mThemeUtils.getOverlayInfos(mCategory).stream()
+                .filter(info -> info.isEnabled())
+                .map(info -> info.packageName)
+                .findFirst()
+                .orElse("android");
+
+            holder.title.setText("android".equals(pkg) ? "Default" : label);
+            holder.title.setTextSize(20);
+            holder.title.setBackgroundColor(getStyleColor(holder.title.getContext(), pkg));
+            holder.name.setVisibility(View.GONE);
+
+            if (currentPackageName.equals(pkg)) {
+                mAppliedPkg = pkg;
+                if (mSelectedPkg == null) {
+                    mSelectedPkg = pkg;
+                }
+            }
+
+            holder.itemView.setActivated(pkg == mSelectedPkg);
+            holder.itemView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    if (mApplyingOverlays.get()) return;
+                    updateActivatedStatus(mSelectedPkg, false);
+                    updateActivatedStatus(pkg, true);
+                    mSelectedPkg = pkg;
+                    enableOverlays(position);
+                }
+            });
+        }
+
+        @Override
+        public int getItemCount() {
+            return mPkgs.size();
+        }
+
+        public class CustomViewHolder extends RecyclerView.ViewHolder {
+            TextView name;
+            TextView title;
+            public CustomViewHolder(View itemView) {
+                super(itemView);
+                title = (TextView) itemView.findViewById(R.id.option_title);
+                name = (TextView) itemView.findViewById(R.id.option_label);
+            }
+        }
+
+        private void updateActivatedStatus(String pkg, boolean isActivated) {
+            int index = mPkgs.indexOf(pkg);
+            if (index < 0) {
+                return;
+            }
+            RecyclerView.ViewHolder holder = mRecyclerView.findViewHolderForAdapterPosition(index);
+            if (holder != null && holder.itemView != null) {
+                holder.itemView.setActivated(isActivated);
+            }
+        }
+    }
+
+    public @ColorInt int getStyleColor(Context context, String pkg) {
+        try {
+            PackageManager pm = context.getPackageManager();
+            Resources res = pkg.equals("android") ? Resources.getSystem()
+                    : pm.getResourcesForApplication(pkg);
+            Configuration configuration = context.getResources().getConfiguration();
+            boolean nightMode = (configuration.uiMode & Configuration.UI_MODE_NIGHT_MASK)
+                    == Configuration.UI_MODE_NIGHT_YES ? true : false;
+            @ColorInt int styleColor = nightMode ? res.getColor(res.getIdentifier(
+                "system_neutral1_900", "color", pkg), null) : res.getColor(
+            res.getIdentifier(
+                "system_neutral1_100", "color", pkg), null);
+            return styleColor;
+        }
+        catch (PackageManager.NameNotFoundException | Resources.NotFoundException e) {
+            e.printStackTrace();
+        }
+        return Color.TRANSPARENT;
+    }
+
+    public String getLabel(Context context, String pkg) {
+        PackageManager pm = context.getPackageManager();
+        try {
+            return pm.getApplicationInfo(pkg, 0)
+                    .loadLabel(pm).toString();
+        } catch (PackageManager.NameNotFoundException e) {
+            e.printStackTrace();
+        }
+        return pkg;
+    }
+
+    public void enableOverlays(int position) {
+        mApplyingOverlays.set(true);
+        mExecutor.execute(() -> {
+            mThemeUtils.setOverlayEnabled(mCategory, mPkgs.get(position));
+            String pattern = "android".equals(mPkgs.get(position)) ? ""
+                    : mPkgs.get(position).split("\\.")[4];
+            for (Map.Entry<String, String> entry : overlayMap.entrySet()) {
+                enableOverlay(entry.getValue(), entry.getKey(), pattern);
+            }
+            mHandler.post(() -> mApplyingOverlays.set(false));
+        });
+    }
+
+    public void enableOverlay(String category, String target, String pattern) {
+        if (pattern.isEmpty()) {
+            mThemeUtils.setOverlayEnabled(category, "android");
+            return;
+        }
+        for (String pkg: mThemeUtils.getOverlayPackagesForCategory(category, target)) {
+            if (pkg.contains(pattern)) {
+                mThemeUtils.setOverlayEnabled(category, pkg);
+            }
+        }
+    }
+}