refactor(magnification suw): hide follow typing toggle in setup wizard

Originally we cache mFollowingTypingSwitchPreference in fragment so in
ToggleScreenMagnificationPreferenceFragmentForSetupWizard we can set the
preference visible to false to hide it. After creating MagnificationFeaturePreferenceController,
the MagnificationFollowTypingPreferenceController can extend it and
check isInSetupWizard internally then dicide whether to hide. Therefore,
we don't need to cache mFollowingTypingSwitchPreference in fragment
and let the fragment control the preference visibility anymore.

Bug: 340721852
Flag: NONE
Test: manually
      atest MagnificationFollowTypingPreferenceControllerTest
      atest ToggleScreenMagnificationPreferenceFragmentForSetupWizardTest
      atest ToggleScreenMagnificationPreferenceFragmentTest
Change-Id: I44f7f0589b2df3d83a27139323fc68a0561f1cfa

src/com/android/settings/accessibility/MagnificationFollowTypingPreferenceController.java

@@ -23,10 +23,10 @@ import android.content.Context;
 import android.provider.Settings;
 
 import com.android.settings.R;
-import com.android.settings.core.TogglePreferenceController;
 
 /** Controller that accesses and switches the preference status of following typing feature */
-public class MagnificationFollowTypingPreferenceController extends TogglePreferenceController {
+public class MagnificationFollowTypingPreferenceController extends
+        MagnificationFeaturePreferenceController {
 
     private static final String TAG =
             MagnificationFollowTypingPreferenceController.class.getSimpleName();
@@ -38,7 +38,7 @@ public class MagnificationFollowTypingPreferenceController extends TogglePrefere
 
     @Override
     public int getAvailabilityStatus() {
-        return AVAILABLE;
+        return isInSetupWizard() ? CONDITIONALLY_UNAVAILABLE : AVAILABLE;
     }
 
     @Override

src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragment.java

@@ -82,8 +82,6 @@ public class ToggleScreenMagnificationPreferenceFragment extends
     private static final TextUtils.SimpleStringSplitter sStringColonSplitter =
             new TextUtils.SimpleStringSplitter(COMPONENT_NAME_SEPARATOR);
 
-    protected TwoStatePreference mFollowingTypingSwitchPreference;
-
     // TODO(b/147021230): Move duplicated functions with android/internal/accessibility into util.
     private TouchExplorationStateChangeListener mTouchExplorationStateChangeListener;
     private CheckBox mSoftwareTypeCheckBox;
@@ -243,17 +241,18 @@ public class ToggleScreenMagnificationPreferenceFragment extends
     }
 
     private void addFollowTypingSetting(PreferenceCategory generalCategory) {
-        mFollowingTypingSwitchPreference = new SwitchPreferenceCompat(getPrefContext());
-        mFollowingTypingSwitchPreference.setTitle(
+        var followingTypingSwitchPreference = new SwitchPreferenceCompat(getPrefContext());
+        followingTypingSwitchPreference.setTitle(
                 R.string.accessibility_screen_magnification_follow_typing_title);
-        mFollowingTypingSwitchPreference.setSummary(
+        followingTypingSwitchPreference.setSummary(
                 R.string.accessibility_screen_magnification_follow_typing_summary);
-        mFollowingTypingSwitchPreference.setKey(
+        followingTypingSwitchPreference.setKey(
                 MagnificationFollowTypingPreferenceController.PREF_KEY);
-        generalCategory.addPreference(mFollowingTypingSwitchPreference);
+        generalCategory.addPreference(followingTypingSwitchPreference);
 
         var followTypingPreferenceController = new MagnificationFollowTypingPreferenceController(
                 getContext(), MagnificationFollowTypingPreferenceController.PREF_KEY);
+        followTypingPreferenceController.setInSetupWizard(mInSetupWizard);
         followTypingPreferenceController.displayPreference(getPreferenceScreen());
         addPreferenceController(followTypingPreferenceController);
     }

src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragmentForSetupWizard.java

@@ -72,10 +72,6 @@ public class ToggleScreenMagnificationPreferenceFragmentForSetupWizard
         if (mSettingsPreference != null) {
             mSettingsPreference.setVisible(false);
         }
-        // Setting of following typing
-        if (mFollowingTypingSwitchPreference != null) {
-            mFollowingTypingSwitchPreference.setVisible(false);
-        }
     }
 
     @Override

tests/robotests/src/com/android/settings/accessibility/MagnificationFollowTypingPreferenceControllerTest.java

@@ -17,6 +17,8 @@
 package com.android.settings.accessibility;
 
 import static com.android.settings.accessibility.AccessibilityUtil.State.OFF;
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+import static com.android.settings.core.BasePreferenceController.CONDITIONALLY_UNAVAILABLE;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -61,6 +63,17 @@ public class MagnificationFollowTypingPreferenceControllerTest {
         reset(mSwitchPreference);
     }
 
+    @Test
+    public void getAvailableStatus_notInSetupWizard_returnAvailable() {
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+
+    @Test
+    public void getAvailableStatus_inSetupWizard_returnConditionallyUnavailable() {
+        mController.setInSetupWizard(true);
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
+    }
+
     @Test
     public void performClick_switchDefaultStateForFollowTyping_shouldReturnFalse() {
         mSwitchPreference.performClick();

tests/robotests/src/com/android/settings/accessibility/ToggleScreenMagnificationPreferenceFragmentForSetupWizardTest.java

@@ -32,7 +32,6 @@ import androidx.lifecycle.LifecycleOwner;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceManager;
 import androidx.preference.PreferenceScreen;
-import androidx.preference.SwitchPreferenceCompat;
 import androidx.test.core.app.ApplicationProvider;
 
 import com.android.settings.R;
@@ -97,7 +96,6 @@ public class ToggleScreenMagnificationPreferenceFragmentForSetupWizardTest {
         verify(mFooterBarMixin).setPrimaryButton(any());
         assertThat(mFragment.mTopIntroPreference.isVisible()).isFalse();
         assertThat(mFragment.mSettingsPreference.isVisible()).isFalse();
-        assertThat(mFragment.mFollowingTypingSwitchPreference.isVisible()).isFalse();
     }
 
     @Test
@@ -124,7 +122,6 @@ public class ToggleScreenMagnificationPreferenceFragmentForSetupWizardTest {
             mPreferenceManager.setPreferences(mPreferenceManager.createPreferenceScreen(context));
             mTopIntroPreference = new TopIntroPreference(context);
             mSettingsPreference = new Preference(context);
-            mFollowingTypingSwitchPreference = new SwitchPreferenceCompat(context);
         }
 
         @Override