Refactor AccessibilityControlTimeoutPreferenceFragment to improve maintainability
Root cause: There is a bunch of different logic of preferences in AccessibilityControlTimeoutPreferenceFragment. It’s hard to implement new features and hard to maintain and hard to be testable. Solution: Move out logic of AccessibilityControlTimeoutPreferenceFragment 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: I22e6e3b9e2f199ac1721fc069690321ad5f7a0d4
This commit is contained in:
menghanli
@@ -19,79 +19,114 @@ package com.android.settings.accessibility;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.res.Resources;
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import android.os.Handler;
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import android.os.Looper;
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import android.provider.Settings;
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import androidx.lifecycle.LifecycleObserver;
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import androidx.annotation.VisibleForTesting;
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import androidx.preference.Preference;
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import androidx.preference.PreferenceScreen;
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import com.android.settings.R;
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import com.android.settings.core.PreferenceControllerMixin;
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import com.android.settingslib.core.AbstractPreferenceController;
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import com.android.settingslib.core.lifecycle.Lifecycle;
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import com.android.settings.core.BasePreferenceController;
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import com.android.settingslib.core.lifecycle.LifecycleObserver;
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import com.android.settingslib.core.lifecycle.events.OnStart;
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import com.android.settingslib.core.lifecycle.events.OnStop;
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import com.android.settingslib.widget.SelectorWithWidgetPreference;
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import com.google.common.primitives.Ints;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Controller class that control accessibility time out settings.
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*/
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public class AccessibilityTimeoutController extends AbstractPreferenceController implements
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LifecycleObserver, SelectorWithWidgetPreference.OnClickListener, PreferenceControllerMixin {
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static final String CONTENT_TIMEOUT_SETTINGS_SECURE =
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Settings.Secure.ACCESSIBILITY_NON_INTERACTIVE_UI_TIMEOUT_MS;
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static final String CONTROL_TIMEOUT_SETTINGS_SECURE =
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Settings.Secure.ACCESSIBILITY_INTERACTIVE_UI_TIMEOUT_MS;
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/** Controller class that control accessibility timeout settings. */
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public class AccessibilityTimeoutController extends BasePreferenceController implements
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LifecycleObserver, OnStart, OnStop , SelectorWithWidgetPreference.OnClickListener {
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private static final List<String> ACCESSIBILITY_TIMEOUT_FEATURE_KEYS = Arrays.asList(
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Settings.Secure.ACCESSIBILITY_NON_INTERACTIVE_UI_TIMEOUT_MS,
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Settings.Secure.ACCESSIBILITY_INTERACTIVE_UI_TIMEOUT_MS
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);
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// pair the preference key and timeout value.
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private final Map<String, Integer> mAccessibilityTimeoutKeyToValueMap = new HashMap<>();
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// RadioButtonPreference key, each preference represent a timeout value.
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private final String mPreferenceKey;
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private final ContentResolver mContentResolver;
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private final Resources mResources;
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private OnChangeListener mOnChangeListener;
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private SelectorWithWidgetPreference mPreference;
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private int mAccessibilityUiTimeoutValue;
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private AccessibilitySettingsContentObserver mSettingsContentObserver;
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public AccessibilityTimeoutController(Context context, Lifecycle lifecycle,
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String preferenceKey) {
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super(context);
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public AccessibilityTimeoutController(Context context, String preferenceKey) {
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super(context, preferenceKey);
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mContentResolver = context.getContentResolver();
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mResources = context.getResources();
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if (lifecycle != null) {
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lifecycle.addObserver(this);
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}
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mPreferenceKey = preferenceKey;
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mSettingsContentObserver = new AccessibilitySettingsContentObserver(
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new Handler(Looper.getMainLooper()));
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mSettingsContentObserver.registerKeysToObserverCallback(ACCESSIBILITY_TIMEOUT_FEATURE_KEYS,
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key -> updateState(mPreference));
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}
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protected static int getSecureAccessibilityTimeoutValue(ContentResolver resolver, String name) {
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String timeOutSec = Settings.Secure.getString(resolver, name);
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if (timeOutSec == null) {
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return 0;
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}
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Integer timeOutValue = Ints.tryParse(timeOutSec);
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return timeOutValue == null ? 0 : timeOutValue;
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@VisibleForTesting
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AccessibilityTimeoutController(Context context, String preferenceKey,
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AccessibilitySettingsContentObserver contentObserver) {
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this(context, preferenceKey);
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mSettingsContentObserver = contentObserver;
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}
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public void setOnChangeListener(OnChangeListener listener) {
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mOnChangeListener = listener;
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@Override
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public void onStart() {
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mSettingsContentObserver.register(mContentResolver);
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}
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@Override
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public void onStop() {
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mSettingsContentObserver.unregister(mContentResolver);
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}
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@Override
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public int getAvailabilityStatus() {
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return AVAILABLE;
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}
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@Override
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public void displayPreference(PreferenceScreen screen) {
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super.displayPreference(screen);
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mPreference = screen.findPreference(getPreferenceKey());
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mPreference.setOnClickListener(this);
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}
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@Override
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public void onRadioButtonClicked(SelectorWithWidgetPreference preference) {
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final String value = String.valueOf(getTimeoutValueToKeyMap().get(mPreferenceKey));
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// save value to both content and control timeout setting.
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Settings.Secure.putString(mContentResolver,
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Settings.Secure.ACCESSIBILITY_NON_INTERACTIVE_UI_TIMEOUT_MS, value);
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Settings.Secure.putString(mContentResolver,
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Settings.Secure.ACCESSIBILITY_INTERACTIVE_UI_TIMEOUT_MS, value);
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}
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@Override
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public void updateState(Preference preference) {
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super.updateState(preference);
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mAccessibilityUiTimeoutValue = AccessibilityTimeoutUtils.getSecureAccessibilityTimeoutValue(
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mContentResolver);
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// reset RadioButton
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mPreference.setChecked(false);
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final int preferenceValue = getTimeoutValueToKeyMap().get(mPreference.getKey());
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if (mAccessibilityUiTimeoutValue == preferenceValue) {
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mPreference.setChecked(true);
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}
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}
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private Map<String, Integer> getTimeoutValueToKeyMap() {
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if (mAccessibilityTimeoutKeyToValueMap.size() == 0) {
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String[] timeoutKeys = mResources.getStringArray(
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R.array.accessibility_timeout_control_selector_keys);
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int[] timeoutValues = mResources.getIntArray(
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final int[] timeoutValues = mResources.getIntArray(
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R.array.accessibility_timeout_selector_values);
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final int timeoutValueCount = timeoutValues.length;
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for (int i = 0; i < timeoutValueCount; i++) {
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mAccessibilityTimeoutKeyToValueMap.put(timeoutKeys[i], timeoutValues[i]);
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@@ -99,77 +134,4 @@ public class AccessibilityTimeoutController extends AbstractPreferenceController
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}
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return mAccessibilityTimeoutKeyToValueMap;
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}
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private void putSecureString(String name, String value) {
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Settings.Secure.putString(mContentResolver, name, value);
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}
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private void handlePreferenceChange(String value) {
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// save value to both content and control timeout setting.
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putSecureString(Settings.Secure.ACCESSIBILITY_NON_INTERACTIVE_UI_TIMEOUT_MS, value);
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putSecureString(Settings.Secure.ACCESSIBILITY_INTERACTIVE_UI_TIMEOUT_MS, value);
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}
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@Override
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public boolean isAvailable() {
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return true;
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}
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@Override
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public String getPreferenceKey() {
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return mPreferenceKey;
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}
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@Override
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public void displayPreference(PreferenceScreen screen) {
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super.displayPreference(screen);
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mPreference = (SelectorWithWidgetPreference)
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screen.findPreference(getPreferenceKey());
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mPreference.setOnClickListener(this);
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}
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@Override
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public void onRadioButtonClicked(SelectorWithWidgetPreference preference) {
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int value = getTimeoutValueToKeyMap().get(mPreferenceKey);
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handlePreferenceChange(String.valueOf(value));
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if (mOnChangeListener != null) {
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mOnChangeListener.onCheckedChanged(mPreference);
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}
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}
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private int getAccessibilityTimeoutValue() {
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// get accessibility control timeout value
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int timeoutValue = getSecureAccessibilityTimeoutValue(mContentResolver,
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CONTROL_TIMEOUT_SETTINGS_SECURE);
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return timeoutValue;
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}
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protected void updatePreferenceCheckedState(int value) {
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if (mAccessibilityUiTimeoutValue == value) {
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mPreference.setChecked(true);
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}
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}
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@Override
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public void updateState(Preference preference) {
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super.updateState(preference);
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mAccessibilityUiTimeoutValue = getAccessibilityTimeoutValue();
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// reset RadioButton
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mPreference.setChecked(false);
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int preferenceValue = getTimeoutValueToKeyMap().get(mPreference.getKey());
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updatePreferenceCheckedState(preferenceValue);
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}
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/**
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* Listener interface handles checked event.
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*/
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public interface OnChangeListener {
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/**
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* A hook that is called when preference checked.
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*/
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void onCheckedChanged(Preference preference);
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}
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}
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