Make Linux terminal option profile aware

Bug: 374034911
Test: atest, plus following manual test \
  - Test tabbed UI with/without work profile \
  - Test that disabled by work profile launches alert dialog \
  - Test whether toggling an app only toggle the app for the user.
Flag: Build.RELEASE_AVF_SUPPORT_CUSTOM_VM_WITH_PARAVIRTUALIZED_DEVICES
Change-Id: I4bf0a2d521cf3e632f6c0320e0b5cc0154d5b68f

src/com/android/settings/development/linuxterminal/LinuxTerminalPreferenceController.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright 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.development.linuxterminal;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.text.TextUtils;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+/** Preference controller for Linux terminal option in developers option */
+public class LinuxTerminalPreferenceController extends DeveloperOptionsPreferenceController
+        implements PreferenceControllerMixin {
+    @VisibleForTesting
+    static final int TERMINAL_PACKAGE_NAME_RESID = R.string.config_linux_terminal_app_package_name;
+
+    private static final String LINUX_TERMINAL_KEY = "linux_terminal";
+
+    @Nullable private final String mTerminalPackageName;
+
+    public LinuxTerminalPreferenceController(@NonNull Context context) {
+        super(context);
+        String packageName = context.getString(TERMINAL_PACKAGE_NAME_RESID);
+        mTerminalPackageName =
+                isPackageInstalled(context.getPackageManager(), packageName) ? packageName : null;
+    }
+
+    // Avoid lazy initialization because this may be called before displayPreference().
+    @Override
+    public boolean isAvailable() {
+        // Returns true only if the terminal app is installed which only happens when the build flag
+        // RELEASE_AVF_SUPPORT_CUSTOM_VM_WITH_PARAVIRTUALIZED_DEVICES is true.
+        // TODO(b/343795511): Add explicitly check for the flag when it's accessible from Java code.
+        return mTerminalPackageName != null;
+    }
+
+    @Override
+    @NonNull
+    public String getPreferenceKey() {
+        return LINUX_TERMINAL_KEY;
+    }
+
+    private static boolean isPackageInstalled(PackageManager manager, String packageName) {
+        if (TextUtils.isEmpty(packageName)) {
+            return false;
+        }
+        try {
+            return manager.getPackageInfo(
+                            packageName,
+                            PackageManager.MATCH_ALL | PackageManager.MATCH_DISABLED_COMPONENTS)
+                    != null;
+        } catch (PackageManager.NameNotFoundException e) {
+            return false;
+        }
+    }
+}