| /* |
| * Copyright (C) 2009 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; |
| |
| import android.accessibilityservice.AccessibilityServiceInfo; |
| import android.app.ActionBar; |
| import android.app.Activity; |
| import android.app.ActivityManagerNative; |
| import android.app.AlertDialog; |
| import android.app.Dialog; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.content.SharedPreferences; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.ServiceInfo; |
| import android.content.res.Configuration; |
| import android.database.ContentObserver; |
| import android.graphics.Color; |
| import android.graphics.drawable.ColorDrawable; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.os.RemoteException; |
| import android.os.SystemProperties; |
| import android.preference.CheckBoxPreference; |
| import android.preference.ListPreference; |
| import android.preference.Preference; |
| import android.preference.PreferenceActivity; |
| import android.preference.PreferenceCategory; |
| import android.preference.PreferenceScreen; |
| import android.provider.Settings; |
| import android.text.TextUtils; |
| import android.text.TextUtils.SimpleStringSplitter; |
| import android.view.Gravity; |
| import android.view.KeyCharacterMap; |
| import android.view.KeyEvent; |
| import android.view.LayoutInflater; |
| import android.view.Menu; |
| import android.view.MenuInflater; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.view.accessibility.AccessibilityManager; |
| import android.widget.ImageView; |
| import android.widget.LinearLayout; |
| import android.widget.Switch; |
| import android.widget.TextView; |
| |
| import com.android.internal.content.PackageMonitor; |
| import com.android.internal.view.RotationPolicy; |
| import com.android.settings.AccessibilitySettings.ToggleSwitch.OnBeforeCheckedChangeListener; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Activity with the accessibility settings. |
| */ |
| public class AccessibilitySettings extends SettingsPreferenceFragment implements DialogCreatable, |
| Preference.OnPreferenceChangeListener { |
| private static final String DEFAULT_SCREENREADER_MARKET_LINK = |
| "market://search?q=pname:com.google.android.marvin.talkback"; |
| |
| private static final float LARGE_FONT_SCALE = 1.3f; |
| |
| private static final String SYSTEM_PROPERTY_MARKET_URL = "ro.screenreader.market"; |
| |
| // Timeout before we update the services if packages are added/removed since |
| // the AccessibilityManagerService has to do that processing first to |
| // generate |
| // the AccessibilityServiceInfo we need for proper presentation. |
| private static final long DELAY_UPDATE_SERVICES_MILLIS = 1000; |
| |
| private static final char ENABLED_ACCESSIBILITY_SERVICES_SEPARATOR = ':'; |
| |
| private static final String KEY_INSTALL_ACCESSIBILITY_SERVICE_OFFERED_ONCE = |
| "key_install_accessibility_service_offered_once"; |
| |
| // Preference categories |
| private static final String SERVICES_CATEGORY = "services_category"; |
| private static final String SYSTEM_CATEGORY = "system_category"; |
| |
| // Preferences |
| private static final String TOGGLE_LARGE_TEXT_PREFERENCE = |
| "toggle_large_text_preference"; |
| private static final String TOGGLE_POWER_BUTTON_ENDS_CALL_PREFERENCE = |
| "toggle_power_button_ends_call_preference"; |
| private static final String TOGGLE_LOCK_SCREEN_ROTATION_PREFERENCE = |
| "toggle_lock_screen_rotation_preference"; |
| private static final String TOGGLE_SPEAK_PASSWORD_PREFERENCE = |
| "toggle_speak_password_preference"; |
| private static final String SELECT_LONG_PRESS_TIMEOUT_PREFERENCE = |
| "select_long_press_timeout_preference"; |
| private static final String ENABLE_ACCESSIBILITY_GESTURE_PREFERENCE_SCREEN = |
| "enable_global_gesture_preference_screen"; |
| private static final String DISPLAY_MAGNIFICATION_PREFERENCE_SCREEN = |
| "screen_magnification_preference_screen"; |
| |
| // Extras passed to sub-fragments. |
| private static final String EXTRA_PREFERENCE_KEY = "preference_key"; |
| private static final String EXTRA_CHECKED = "checked"; |
| private static final String EXTRA_TITLE = "title"; |
| private static final String EXTRA_SUMMARY = "summary"; |
| private static final String EXTRA_SETTINGS_TITLE = "settings_title"; |
| private static final String EXTRA_COMPONENT_NAME = "component_name"; |
| private static final String EXTRA_SETTINGS_COMPONENT_NAME = "settings_component_name"; |
| |
| // Dialog IDs. |
| private static final int DIALOG_ID_NO_ACCESSIBILITY_SERVICES = 1; |
| |
| // Auxiliary members. |
| private final static SimpleStringSplitter sStringColonSplitter = |
| new SimpleStringSplitter(ENABLED_ACCESSIBILITY_SERVICES_SEPARATOR); |
| |
| private static final Set<ComponentName> sInstalledServices = new HashSet<ComponentName>(); |
| |
| private final Map<String, String> mLongPressTimeoutValuetoTitleMap = |
| new HashMap<String, String>(); |
| |
| private final Configuration mCurConfig = new Configuration(); |
| |
| private final PackageMonitor mSettingsPackageMonitor = new SettingsPackageMonitor(); |
| |
| private final Handler mHandler = new Handler() { |
| @Override |
| public void dispatchMessage(Message msg) { |
| super.dispatchMessage(msg); |
| loadInstalledServices(); |
| updateServicesPreferences(); |
| } |
| }; |
| |
| private final SettingsContentObserver mSettingsContentObserver = |
| new SettingsContentObserver(mHandler) { |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| loadInstalledServices(); |
| updateServicesPreferences(); |
| } |
| }; |
| |
| private final RotationPolicy.RotationPolicyListener mRotationPolicyListener = |
| new RotationPolicy.RotationPolicyListener() { |
| @Override |
| public void onChange() { |
| updateLockScreenRotationCheckbox(); |
| } |
| }; |
| |
| // Preference controls. |
| private PreferenceCategory mServicesCategory; |
| private PreferenceCategory mSystemsCategory; |
| |
| private CheckBoxPreference mToggleLargeTextPreference; |
| private CheckBoxPreference mTogglePowerButtonEndsCallPreference; |
| private CheckBoxPreference mToggleLockScreenRotationPreference; |
| private CheckBoxPreference mToggleSpeakPasswordPreference; |
| private ListPreference mSelectLongPressTimeoutPreference; |
| private Preference mNoServicesMessagePreference; |
| private PreferenceScreen mDisplayMagnificationPreferenceScreen; |
| private PreferenceScreen mGlobalGesturePreferenceScreen; |
| |
| private int mLongPressTimeoutDefault; |
| |
| @Override |
| public void onCreate(Bundle icicle) { |
| super.onCreate(icicle); |
| addPreferencesFromResource(R.xml.accessibility_settings); |
| initializeAllPreferences(); |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| loadInstalledServices(); |
| updateAllPreferences(); |
| |
| offerInstallAccessibilitySerivceOnce(); |
| |
| mSettingsPackageMonitor.register(getActivity(), getActivity().getMainLooper(), false); |
| mSettingsContentObserver.register(getContentResolver()); |
| RotationPolicy.registerRotationPolicyListener(getActivity(), |
| mRotationPolicyListener); |
| } |
| |
| @Override |
| public void onPause() { |
| mSettingsPackageMonitor.unregister(); |
| RotationPolicy.unregisterRotationPolicyListener(getActivity(), |
| mRotationPolicyListener); |
| mSettingsContentObserver.unregister(getContentResolver()); |
| super.onPause(); |
| } |
| |
| public boolean onPreferenceChange(Preference preference, Object newValue) { |
| if (preference == mSelectLongPressTimeoutPreference) { |
| String stringValue = (String) newValue; |
| Settings.Secure.putInt(getContentResolver(), |
| Settings.Secure.LONG_PRESS_TIMEOUT, Integer.parseInt(stringValue)); |
| mSelectLongPressTimeoutPreference.setSummary( |
| mLongPressTimeoutValuetoTitleMap.get(stringValue)); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { |
| if (mToggleLargeTextPreference == preference) { |
| handleToggleLargeTextPreferenceClick(); |
| return true; |
| } else if (mTogglePowerButtonEndsCallPreference == preference) { |
| handleTogglePowerButtonEndsCallPreferenceClick(); |
| return true; |
| } else if (mToggleLockScreenRotationPreference == preference) { |
| handleLockScreenRotationPreferenceClick(); |
| return true; |
| } else if (mToggleSpeakPasswordPreference == preference) { |
| handleToggleSpeakPasswordPreferenceClick(); |
| return true; |
| } else if (mGlobalGesturePreferenceScreen == preference) { |
| handleTogglEnableAccessibilityGesturePreferenceClick(); |
| return true; |
| } else if (mDisplayMagnificationPreferenceScreen == preference) { |
| handleDisplayMagnificationPreferenceScreenClick(); |
| return true; |
| } |
| return super.onPreferenceTreeClick(preferenceScreen, preference); |
| } |
| |
| private void handleToggleLargeTextPreferenceClick() { |
| try { |
| mCurConfig.fontScale = mToggleLargeTextPreference.isChecked() ? LARGE_FONT_SCALE : 1; |
| ActivityManagerNative.getDefault().updatePersistentConfiguration(mCurConfig); |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| } |
| |
| private void handleTogglePowerButtonEndsCallPreferenceClick() { |
| Settings.Secure.putInt(getContentResolver(), |
| Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR, |
| (mTogglePowerButtonEndsCallPreference.isChecked() |
| ? Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_HANGUP |
| : Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_SCREEN_OFF)); |
| } |
| |
| private void handleLockScreenRotationPreferenceClick() { |
| RotationPolicy.setRotationLockForAccessibility(getActivity(), |
| !mToggleLockScreenRotationPreference.isChecked()); |
| } |
| |
| private void handleToggleSpeakPasswordPreferenceClick() { |
| Settings.Secure.putInt(getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, |
| mToggleSpeakPasswordPreference.isChecked() ? 1 : 0); |
| } |
| |
| private void handleTogglEnableAccessibilityGesturePreferenceClick() { |
| Bundle extras = mGlobalGesturePreferenceScreen.getExtras(); |
| extras.putString(EXTRA_TITLE, getString( |
| R.string.accessibility_global_gesture_preference_title)); |
| extras.putString(EXTRA_SUMMARY, getString( |
| R.string.accessibility_global_gesture_preference_description)); |
| extras.putBoolean(EXTRA_CHECKED, Settings.Global.getInt(getContentResolver(), |
| Settings.Global.ENABLE_ACCESSIBILITY_GLOBAL_GESTURE_ENABLED, 0) == 1); |
| super.onPreferenceTreeClick(mGlobalGesturePreferenceScreen, |
| mGlobalGesturePreferenceScreen); |
| } |
| |
| private void handleDisplayMagnificationPreferenceScreenClick() { |
| Bundle extras = mDisplayMagnificationPreferenceScreen.getExtras(); |
| extras.putString(EXTRA_TITLE, getString( |
| R.string.accessibility_screen_magnification_title)); |
| extras.putCharSequence(EXTRA_SUMMARY, getActivity().getResources().getText( |
| R.string.accessibility_screen_magnification_summary)); |
| extras.putBoolean(EXTRA_CHECKED, Settings.Secure.getInt(getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED, 0) == 1); |
| super.onPreferenceTreeClick(mDisplayMagnificationPreferenceScreen, |
| mDisplayMagnificationPreferenceScreen); |
| } |
| |
| private void initializeAllPreferences() { |
| mServicesCategory = (PreferenceCategory) findPreference(SERVICES_CATEGORY); |
| mSystemsCategory = (PreferenceCategory) findPreference(SYSTEM_CATEGORY); |
| |
| // Large text. |
| mToggleLargeTextPreference = |
| (CheckBoxPreference) findPreference(TOGGLE_LARGE_TEXT_PREFERENCE); |
| |
| // Power button ends calls. |
| mTogglePowerButtonEndsCallPreference = |
| (CheckBoxPreference) findPreference(TOGGLE_POWER_BUTTON_ENDS_CALL_PREFERENCE); |
| if (!KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_POWER) |
| || !Utils.isVoiceCapable(getActivity())) { |
| mSystemsCategory.removePreference(mTogglePowerButtonEndsCallPreference); |
| } |
| |
| // Lock screen rotation. |
| mToggleLockScreenRotationPreference = |
| (CheckBoxPreference) findPreference(TOGGLE_LOCK_SCREEN_ROTATION_PREFERENCE); |
| |
| // Speak passwords. |
| mToggleSpeakPasswordPreference = |
| (CheckBoxPreference) findPreference(TOGGLE_SPEAK_PASSWORD_PREFERENCE); |
| |
| // Long press timeout. |
| mSelectLongPressTimeoutPreference = |
| (ListPreference) findPreference(SELECT_LONG_PRESS_TIMEOUT_PREFERENCE); |
| mSelectLongPressTimeoutPreference.setOnPreferenceChangeListener(this); |
| if (mLongPressTimeoutValuetoTitleMap.size() == 0) { |
| String[] timeoutValues = getResources().getStringArray( |
| R.array.long_press_timeout_selector_values); |
| mLongPressTimeoutDefault = Integer.parseInt(timeoutValues[0]); |
| String[] timeoutTitles = getResources().getStringArray( |
| R.array.long_press_timeout_selector_titles); |
| final int timeoutValueCount = timeoutValues.length; |
| for (int i = 0; i < timeoutValueCount; i++) { |
| mLongPressTimeoutValuetoTitleMap.put(timeoutValues[i], timeoutTitles[i]); |
| } |
| } |
| |
| // Display magnification. |
| mDisplayMagnificationPreferenceScreen = (PreferenceScreen) findPreference( |
| DISPLAY_MAGNIFICATION_PREFERENCE_SCREEN); |
| |
| // Global gesture. |
| mGlobalGesturePreferenceScreen = |
| (PreferenceScreen) findPreference(ENABLE_ACCESSIBILITY_GESTURE_PREFERENCE_SCREEN); |
| } |
| |
| private void updateAllPreferences() { |
| updateServicesPreferences(); |
| updateSystemPreferences(); |
| } |
| |
| private void updateServicesPreferences() { |
| // Since services category is auto generated we have to do a pass |
| // to generate it since services can come and go and then based on |
| // the global accessibility state to decided whether it is enabled. |
| |
| // Generate. |
| mServicesCategory.removeAll(); |
| |
| AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(getActivity()); |
| |
| List<AccessibilityServiceInfo> installedServices = |
| accessibilityManager.getInstalledAccessibilityServiceList(); |
| Set<ComponentName> enabledServices = getEnabledServicesFromSettings(getActivity()); |
| |
| final boolean accessibilityEnabled = Settings.Secure.getInt(getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_ENABLED, 0) == 1; |
| |
| for (int i = 0, count = installedServices.size(); i < count; ++i) { |
| AccessibilityServiceInfo info = installedServices.get(i); |
| |
| PreferenceScreen preference = getPreferenceManager().createPreferenceScreen( |
| getActivity()); |
| String title = info.getResolveInfo().loadLabel(getPackageManager()).toString(); |
| |
| ServiceInfo serviceInfo = info.getResolveInfo().serviceInfo; |
| ComponentName componentName = new ComponentName(serviceInfo.packageName, |
| serviceInfo.name); |
| |
| preference.setKey(componentName.flattenToString()); |
| |
| preference.setTitle(title); |
| final boolean serviceEnabled = accessibilityEnabled |
| && enabledServices.contains(componentName); |
| if (serviceEnabled) { |
| preference.setSummary(getString(R.string.accessibility_feature_state_on)); |
| } else { |
| preference.setSummary(getString(R.string.accessibility_feature_state_off)); |
| } |
| |
| preference.setOrder(i); |
| preference.setFragment(ToggleAccessibilityServicePreferenceFragment.class.getName()); |
| preference.setPersistent(true); |
| |
| Bundle extras = preference.getExtras(); |
| extras.putString(EXTRA_PREFERENCE_KEY, preference.getKey()); |
| extras.putBoolean(EXTRA_CHECKED, serviceEnabled); |
| extras.putString(EXTRA_TITLE, title); |
| |
| String description = info.loadDescription(getPackageManager()); |
| if (TextUtils.isEmpty(description)) { |
| description = getString(R.string.accessibility_service_default_description); |
| } |
| extras.putString(EXTRA_SUMMARY, description); |
| |
| String settingsClassName = info.getSettingsActivityName(); |
| if (!TextUtils.isEmpty(settingsClassName)) { |
| extras.putString(EXTRA_SETTINGS_TITLE, |
| getString(R.string.accessibility_menu_item_settings)); |
| extras.putString(EXTRA_SETTINGS_COMPONENT_NAME, |
| new ComponentName(info.getResolveInfo().serviceInfo.packageName, |
| settingsClassName).flattenToString()); |
| } |
| |
| extras.putParcelable(EXTRA_COMPONENT_NAME, componentName); |
| |
| mServicesCategory.addPreference(preference); |
| } |
| |
| if (mServicesCategory.getPreferenceCount() == 0) { |
| if (mNoServicesMessagePreference == null) { |
| mNoServicesMessagePreference = new Preference(getActivity()) { |
| @Override |
| protected void onBindView(View view) { |
| super.onBindView(view); |
| TextView summaryView = (TextView) view.findViewById(R.id.summary); |
| String title = getString(R.string.accessibility_no_services_installed); |
| summaryView.setText(title); |
| } |
| }; |
| mNoServicesMessagePreference.setPersistent(false); |
| mNoServicesMessagePreference.setLayoutResource( |
| R.layout.text_description_preference); |
| mNoServicesMessagePreference.setSelectable(false); |
| } |
| mServicesCategory.addPreference(mNoServicesMessagePreference); |
| } |
| } |
| |
| private void updateSystemPreferences() { |
| // Large text. |
| try { |
| mCurConfig.updateFrom(ActivityManagerNative.getDefault().getConfiguration()); |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| mToggleLargeTextPreference.setChecked(mCurConfig.fontScale == LARGE_FONT_SCALE); |
| |
| // Power button ends calls. |
| if (KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_POWER) |
| && Utils.isVoiceCapable(getActivity())) { |
| final int incallPowerBehavior = Settings.Secure.getInt(getContentResolver(), |
| Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR, |
| Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_DEFAULT); |
| final boolean powerButtonEndsCall = |
| (incallPowerBehavior == Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_HANGUP); |
| mTogglePowerButtonEndsCallPreference.setChecked(powerButtonEndsCall); |
| } |
| |
| // Auto-rotate screen |
| updateLockScreenRotationCheckbox(); |
| |
| // Speak passwords. |
| final boolean speakPasswordEnabled = Settings.Secure.getInt(getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, 0) != 0; |
| mToggleSpeakPasswordPreference.setChecked(speakPasswordEnabled); |
| |
| // Long press timeout. |
| final int longPressTimeout = Settings.Secure.getInt(getContentResolver(), |
| Settings.Secure.LONG_PRESS_TIMEOUT, mLongPressTimeoutDefault); |
| String value = String.valueOf(longPressTimeout); |
| mSelectLongPressTimeoutPreference.setValue(value); |
| mSelectLongPressTimeoutPreference.setSummary(mLongPressTimeoutValuetoTitleMap.get(value)); |
| |
| // Screen magnification. |
| final boolean magnificationEnabled = Settings.Secure.getInt(getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED, 0) == 1; |
| if (magnificationEnabled) { |
| mDisplayMagnificationPreferenceScreen.setSummary( |
| R.string.accessibility_feature_state_on); |
| } else { |
| mDisplayMagnificationPreferenceScreen.setSummary( |
| R.string.accessibility_feature_state_off); |
| } |
| |
| // Global gesture |
| final boolean globalGestureEnabled = Settings.Global.getInt(getContentResolver(), |
| Settings.Global.ENABLE_ACCESSIBILITY_GLOBAL_GESTURE_ENABLED, 0) == 1; |
| if (globalGestureEnabled) { |
| mGlobalGesturePreferenceScreen.setSummary( |
| R.string.accessibility_global_gesture_preference_summary_on); |
| } else { |
| mGlobalGesturePreferenceScreen.setSummary( |
| R.string.accessibility_global_gesture_preference_summary_off); |
| } |
| } |
| |
| private void updateLockScreenRotationCheckbox() { |
| Context context = getActivity(); |
| if (context != null) { |
| mToggleLockScreenRotationPreference.setChecked( |
| !RotationPolicy.isRotationLocked(context)); |
| } |
| } |
| |
| private void offerInstallAccessibilitySerivceOnce() { |
| // There is always one preference - if no services it is just a message. |
| if (mServicesCategory.getPreference(0) != mNoServicesMessagePreference) { |
| return; |
| } |
| SharedPreferences preferences = getActivity().getPreferences(Context.MODE_PRIVATE); |
| final boolean offerInstallService = !preferences.getBoolean( |
| KEY_INSTALL_ACCESSIBILITY_SERVICE_OFFERED_ONCE, false); |
| if (offerInstallService) { |
| String screenreaderMarketLink = SystemProperties.get( |
| SYSTEM_PROPERTY_MARKET_URL, |
| DEFAULT_SCREENREADER_MARKET_LINK); |
| Uri marketUri = Uri.parse(screenreaderMarketLink); |
| Intent marketIntent = new Intent(Intent.ACTION_VIEW, marketUri); |
| |
| if (getPackageManager().resolveActivity(marketIntent, 0) == null) { |
| // Don't show the dialog if no market app is found/installed. |
| return; |
| } |
| |
| preferences.edit().putBoolean(KEY_INSTALL_ACCESSIBILITY_SERVICE_OFFERED_ONCE, |
| true).commit(); |
| // Notify user that they do not have any accessibility |
| // services installed and direct them to Market to get TalkBack. |
| showDialog(DIALOG_ID_NO_ACCESSIBILITY_SERVICES); |
| } |
| } |
| |
| @Override |
| public Dialog onCreateDialog(int dialogId) { |
| switch (dialogId) { |
| case DIALOG_ID_NO_ACCESSIBILITY_SERVICES: |
| return new AlertDialog.Builder(getActivity()) |
| .setTitle(R.string.accessibility_service_no_apps_title) |
| .setMessage(R.string.accessibility_service_no_apps_message) |
| .setPositiveButton(android.R.string.ok, |
| new DialogInterface.OnClickListener() { |
| public void onClick(DialogInterface dialog, int which) { |
| // dismiss the dialog before launching |
| // the activity otherwise |
| // the dialog removal occurs after |
| // onSaveInstanceState which |
| // triggers an exception |
| removeDialog(DIALOG_ID_NO_ACCESSIBILITY_SERVICES); |
| String screenreaderMarketLink = SystemProperties.get( |
| SYSTEM_PROPERTY_MARKET_URL, |
| DEFAULT_SCREENREADER_MARKET_LINK); |
| Uri marketUri = Uri.parse(screenreaderMarketLink); |
| Intent marketIntent = new Intent(Intent.ACTION_VIEW, |
| marketUri); |
| startActivity(marketIntent); |
| } |
| }) |
| .setNegativeButton(android.R.string.cancel, null) |
| .create(); |
| default: |
| return null; |
| } |
| } |
| |
| private void loadInstalledServices() { |
| Set<ComponentName> installedServices = sInstalledServices; |
| installedServices.clear(); |
| |
| List<AccessibilityServiceInfo> installedServiceInfos = |
| AccessibilityManager.getInstance(getActivity()) |
| .getInstalledAccessibilityServiceList(); |
| if (installedServiceInfos == null) { |
| return; |
| } |
| |
| final int installedServiceInfoCount = installedServiceInfos.size(); |
| for (int i = 0; i < installedServiceInfoCount; i++) { |
| ResolveInfo resolveInfo = installedServiceInfos.get(i).getResolveInfo(); |
| ComponentName installedService = new ComponentName( |
| resolveInfo.serviceInfo.packageName, |
| resolveInfo.serviceInfo.name); |
| installedServices.add(installedService); |
| } |
| } |
| |
| private static Set<ComponentName> getEnabledServicesFromSettings(Context context) { |
| String enabledServicesSetting = Settings.Secure.getString(context.getContentResolver(), |
| Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES); |
| if (enabledServicesSetting == null) { |
| enabledServicesSetting = ""; |
| } |
| Set<ComponentName> enabledServices = new HashSet<ComponentName>(); |
| SimpleStringSplitter colonSplitter = sStringColonSplitter; |
| colonSplitter.setString(enabledServicesSetting); |
| while (colonSplitter.hasNext()) { |
| String componentNameString = colonSplitter.next(); |
| ComponentName enabledService = ComponentName.unflattenFromString( |
| componentNameString); |
| if (enabledService != null) { |
| enabledServices.add(enabledService); |
| } |
| } |
| return enabledServices; |
| } |
| |
| private class SettingsPackageMonitor extends PackageMonitor { |
| |
| @Override |
| public void onPackageAdded(String packageName, int uid) { |
| Message message = mHandler.obtainMessage(); |
| mHandler.sendMessageDelayed(message, DELAY_UPDATE_SERVICES_MILLIS); |
| } |
| |
| @Override |
| public void onPackageAppeared(String packageName, int reason) { |
| Message message = mHandler.obtainMessage(); |
| mHandler.sendMessageDelayed(message, DELAY_UPDATE_SERVICES_MILLIS); |
| } |
| |
| @Override |
| public void onPackageDisappeared(String packageName, int reason) { |
| Message message = mHandler.obtainMessage(); |
| mHandler.sendMessageDelayed(message, DELAY_UPDATE_SERVICES_MILLIS); |
| } |
| |
| @Override |
| public void onPackageRemoved(String packageName, int uid) { |
| Message message = mHandler.obtainMessage(); |
| mHandler.sendMessageDelayed(message, DELAY_UPDATE_SERVICES_MILLIS); |
| } |
| } |
| |
| public static class ToggleSwitch extends Switch { |
| |
| private OnBeforeCheckedChangeListener mOnBeforeListener; |
| |
| public static interface OnBeforeCheckedChangeListener { |
| public boolean onBeforeCheckedChanged(ToggleSwitch toggleSwitch, boolean checked); |
| } |
| |
| public ToggleSwitch(Context context) { |
| super(context); |
| } |
| |
| public void setOnBeforeCheckedChangeListener(OnBeforeCheckedChangeListener listener) { |
| mOnBeforeListener = listener; |
| } |
| |
| @Override |
| public void setChecked(boolean checked) { |
| if (mOnBeforeListener != null |
| && mOnBeforeListener.onBeforeCheckedChanged(this, checked)) { |
| return; |
| } |
| super.setChecked(checked); |
| } |
| |
| public void setCheckedInternal(boolean checked) { |
| super.setChecked(checked); |
| } |
| } |
| |
| public static class ToggleAccessibilityServicePreferenceFragment |
| extends ToggleFeaturePreferenceFragment implements DialogInterface.OnClickListener { |
| |
| private static final int DIALOG_ID_ENABLE_WARNING = 1; |
| private static final int DIALOG_ID_DISABLE_WARNING = 2; |
| |
| private final SettingsContentObserver mSettingsContentObserver = |
| new SettingsContentObserver(new Handler()) { |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| String settingValue = Settings.Secure.getString(getContentResolver(), |
| Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES); |
| final boolean enabled = settingValue.contains(mComponentName.flattenToString()); |
| mToggleSwitch.setCheckedInternal(enabled); |
| } |
| }; |
| |
| private ComponentName mComponentName; |
| |
| private int mShownDialogId; |
| |
| @Override |
| public void onResume() { |
| mSettingsContentObserver.register(getContentResolver()); |
| super.onResume(); |
| } |
| |
| @Override |
| public void onPause() { |
| mSettingsContentObserver.unregister(getContentResolver()); |
| super.onPause(); |
| } |
| |
| @Override |
| public void onPreferenceToggled(String preferenceKey, boolean enabled) { |
| // Parse the enabled services. |
| Set<ComponentName> enabledServices = getEnabledServicesFromSettings(getActivity()); |
| |
| // Determine enabled services and accessibility state. |
| ComponentName toggledService = ComponentName.unflattenFromString(preferenceKey); |
| boolean accessibilityEnabled = false; |
| if (enabled) { |
| enabledServices.add(toggledService); |
| // Enabling at least one service enables accessibility. |
| accessibilityEnabled = true; |
| } else { |
| enabledServices.remove(toggledService); |
| // Check how many enabled and installed services are present. |
| Set<ComponentName> installedServices = sInstalledServices; |
| for (ComponentName enabledService : enabledServices) { |
| if (installedServices.contains(enabledService)) { |
| // Disabling the last service disables accessibility. |
| accessibilityEnabled = true; |
| break; |
| } |
| } |
| } |
| |
| // Update the enabled services setting. |
| StringBuilder enabledServicesBuilder = new StringBuilder(); |
| // Keep the enabled services even if they are not installed since we |
| // have no way to know whether the application restore process has |
| // completed. In general the system should be responsible for the |
| // clean up not settings. |
| for (ComponentName enabledService : enabledServices) { |
| enabledServicesBuilder.append(enabledService.flattenToString()); |
| enabledServicesBuilder.append(ENABLED_ACCESSIBILITY_SERVICES_SEPARATOR); |
| } |
| final int enabledServicesBuilderLength = enabledServicesBuilder.length(); |
| if (enabledServicesBuilderLength > 0) { |
| enabledServicesBuilder.deleteCharAt(enabledServicesBuilderLength - 1); |
| } |
| Settings.Secure.putString(getContentResolver(), |
| Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES, |
| enabledServicesBuilder.toString()); |
| |
| // Update accessibility enabled. |
| Settings.Secure.putInt(getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_ENABLED, accessibilityEnabled ? 1 : 0); |
| } |
| |
| // IMPORTANT: Refresh the info since there are dynamically changing capabilities. For |
| // example, before JellyBean MR2 the user was granting the explore by touch one. |
| private AccessibilityServiceInfo getAccessibilityServiceInfo() { |
| List<AccessibilityServiceInfo> serviceInfos = AccessibilityManager.getInstance( |
| getActivity()).getInstalledAccessibilityServiceList(); |
| final int serviceInfoCount = serviceInfos.size(); |
| for (int i = 0; i < serviceInfoCount; i++) { |
| AccessibilityServiceInfo serviceInfo = serviceInfos.get(i); |
| ResolveInfo resolveInfo = serviceInfo.getResolveInfo(); |
| if (mComponentName.getPackageName().equals(resolveInfo.serviceInfo.packageName) |
| && mComponentName.getClassName().equals(resolveInfo.serviceInfo.name)) { |
| return serviceInfo; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public Dialog onCreateDialog(int dialogId) { |
| switch (dialogId) { |
| case DIALOG_ID_ENABLE_WARNING: { |
| mShownDialogId = DIALOG_ID_ENABLE_WARNING; |
| AccessibilityServiceInfo info = getAccessibilityServiceInfo(); |
| if (info == null) { |
| return null; |
| } |
| return new AlertDialog.Builder(getActivity()) |
| .setTitle(getString(R.string.enable_service_title, |
| info.getResolveInfo().loadLabel(getPackageManager()))) |
| .setIconAttribute(android.R.attr.alertDialogIcon) |
| .setView(createEnableDialogContentView(info)) |
| .setCancelable(true) |
| .setPositiveButton(android.R.string.ok, this) |
| .setNegativeButton(android.R.string.cancel, this) |
| .create(); |
| } |
| case DIALOG_ID_DISABLE_WARNING: { |
| mShownDialogId = DIALOG_ID_DISABLE_WARNING; |
| AccessibilityServiceInfo info = getAccessibilityServiceInfo(); |
| if (info == null) { |
| return null; |
| } |
| return new AlertDialog.Builder(getActivity()) |
| .setTitle(getString(R.string.disable_service_title, |
| info.getResolveInfo().loadLabel(getPackageManager()))) |
| .setIconAttribute(android.R.attr.alertDialogIcon) |
| .setMessage(getString(R.string.disable_service_message, |
| info.getResolveInfo().loadLabel(getPackageManager()))) |
| .setCancelable(true) |
| .setPositiveButton(android.R.string.ok, this) |
| .setNegativeButton(android.R.string.cancel, this) |
| .create(); |
| } |
| default: { |
| throw new IllegalArgumentException(); |
| } |
| } |
| } |
| |
| private View createEnableDialogContentView(AccessibilityServiceInfo info) { |
| LayoutInflater inflater = (LayoutInflater) getSystemService( |
| Context.LAYOUT_INFLATER_SERVICE); |
| |
| View content = inflater.inflate(R.layout.enable_accessibility_service_dialog_content, |
| null); |
| |
| TextView capabilitiesHeaderView = (TextView) content.findViewById( |
| R.id.capabilities_header); |
| capabilitiesHeaderView.setText(getString(R.string.capabilities_list_title, |
| info.getResolveInfo().loadLabel(getPackageManager()))); |
| |
| LinearLayout capabilitiesView = (LinearLayout) content.findViewById(R.id.capabilities); |
| |
| // This capability is implicit for all services. |
| View capabilityView = inflater.inflate( |
| com.android.internal.R.layout.app_permission_item_old, null); |
| |
| ImageView imageView = (ImageView) capabilityView.findViewById( |
| com.android.internal.R.id.perm_icon); |
| imageView.setImageDrawable(getResources().getDrawable( |
| com.android.internal.R.drawable.ic_text_dot)); |
| |
| TextView labelView = (TextView) capabilityView.findViewById( |
| com.android.internal.R.id.permission_group); |
| labelView.setText(getString(R.string.capability_title_receiveAccessibilityEvents)); |
| |
| TextView descriptionView = (TextView) capabilityView.findViewById( |
| com.android.internal.R.id.permission_list); |
| descriptionView.setText(getString(R.string.capability_desc_receiveAccessibilityEvents)); |
| |
| List<AccessibilityServiceInfo.CapabilityInfo> capabilities = |
| info.getCapabilityInfos(); |
| |
| capabilitiesView.addView(capabilityView); |
| |
| // Service specific capabilities. |
| final int capabilityCount = capabilities.size(); |
| for (int i = 0; i < capabilityCount; i++) { |
| AccessibilityServiceInfo.CapabilityInfo capability = capabilities.get(i); |
| |
| capabilityView = inflater.inflate( |
| com.android.internal.R.layout.app_permission_item_old, null); |
| |
| imageView = (ImageView) capabilityView.findViewById( |
| com.android.internal.R.id.perm_icon); |
| imageView.setImageDrawable(getResources().getDrawable( |
| com.android.internal.R.drawable.ic_text_dot)); |
| |
| labelView = (TextView) capabilityView.findViewById( |
| com.android.internal.R.id.permission_group); |
| labelView.setText(getString(capability.titleResId)); |
| |
| descriptionView = (TextView) capabilityView.findViewById( |
| com.android.internal.R.id.permission_list); |
| descriptionView.setText(getString(capability.descResId)); |
| |
| capabilitiesView.addView(capabilityView); |
| } |
| |
| return content; |
| } |
| |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| final boolean checked; |
| switch (which) { |
| case DialogInterface.BUTTON_POSITIVE: |
| checked = (mShownDialogId == DIALOG_ID_ENABLE_WARNING); |
| mToggleSwitch.setCheckedInternal(checked); |
| getArguments().putBoolean(EXTRA_CHECKED, checked); |
| onPreferenceToggled(mPreferenceKey, checked); |
| break; |
| case DialogInterface.BUTTON_NEGATIVE: |
| checked = (mShownDialogId == DIALOG_ID_DISABLE_WARNING); |
| mToggleSwitch.setCheckedInternal(checked); |
| getArguments().putBoolean(EXTRA_CHECKED, checked); |
| onPreferenceToggled(mPreferenceKey, checked); |
| break; |
| default: |
| throw new IllegalArgumentException(); |
| } |
| } |
| |
| @Override |
| protected void onInstallActionBarToggleSwitch() { |
| super.onInstallActionBarToggleSwitch(); |
| mToggleSwitch.setOnBeforeCheckedChangeListener(new OnBeforeCheckedChangeListener() { |
| @Override |
| public boolean onBeforeCheckedChanged(ToggleSwitch toggleSwitch, boolean checked) { |
| if (checked) { |
| toggleSwitch.setCheckedInternal(false); |
| getArguments().putBoolean(EXTRA_CHECKED, false); |
| showDialog(DIALOG_ID_ENABLE_WARNING); |
| } else { |
| toggleSwitch.setCheckedInternal(true); |
| getArguments().putBoolean(EXTRA_CHECKED, true); |
| showDialog(DIALOG_ID_DISABLE_WARNING); |
| } |
| return true; |
| } |
| }); |
| } |
| |
| @Override |
| protected void onProcessArguments(Bundle arguments) { |
| super.onProcessArguments(arguments); |
| // Settings title and intent. |
| String settingsTitle = arguments.getString(EXTRA_SETTINGS_TITLE); |
| String settingsComponentName = arguments.getString(EXTRA_SETTINGS_COMPONENT_NAME); |
| if (!TextUtils.isEmpty(settingsTitle) && !TextUtils.isEmpty(settingsComponentName)) { |
| Intent settingsIntent = new Intent(Intent.ACTION_MAIN).setComponent( |
| ComponentName.unflattenFromString(settingsComponentName.toString())); |
| if (!getPackageManager().queryIntentActivities(settingsIntent, 0).isEmpty()) { |
| mSettingsTitle = settingsTitle; |
| mSettingsIntent = settingsIntent; |
| setHasOptionsMenu(true); |
| } |
| } |
| |
| mComponentName = arguments.getParcelable(EXTRA_COMPONENT_NAME); |
| } |
| } |
| |
| public static class ToggleScreenMagnificationPreferenceFragment |
| extends ToggleFeaturePreferenceFragment { |
| @Override |
| protected void onPreferenceToggled(String preferenceKey, boolean enabled) { |
| Settings.Secure.putInt(getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED, enabled? 1 : 0); |
| } |
| |
| @Override |
| protected void onInstallActionBarToggleSwitch() { |
| super.onInstallActionBarToggleSwitch(); |
| mToggleSwitch.setOnBeforeCheckedChangeListener(new OnBeforeCheckedChangeListener() { |
| @Override |
| public boolean onBeforeCheckedChanged(ToggleSwitch toggleSwitch, boolean checked) { |
| toggleSwitch.setCheckedInternal(checked); |
| getArguments().putBoolean(EXTRA_CHECKED, checked); |
| onPreferenceToggled(mPreferenceKey, checked); |
| return false; |
| } |
| }); |
| } |
| } |
| |
| public static class ToggleGlobalGesturePreferenceFragment |
| extends ToggleFeaturePreferenceFragment { |
| @Override |
| protected void onPreferenceToggled(String preferenceKey, boolean enabled) { |
| Settings.Global.putInt(getContentResolver(), |
| Settings.Global.ENABLE_ACCESSIBILITY_GLOBAL_GESTURE_ENABLED, enabled ? 1 : 0); |
| } |
| |
| @Override |
| protected void onInstallActionBarToggleSwitch() { |
| super.onInstallActionBarToggleSwitch(); |
| mToggleSwitch.setOnBeforeCheckedChangeListener(new OnBeforeCheckedChangeListener() { |
| @Override |
| public boolean onBeforeCheckedChanged(ToggleSwitch toggleSwitch, boolean checked) { |
| toggleSwitch.setCheckedInternal(checked); |
| getArguments().putBoolean(EXTRA_CHECKED, checked); |
| onPreferenceToggled(mPreferenceKey, checked); |
| return false; |
| } |
| }); |
| } |
| } |
| |
| public static abstract class ToggleFeaturePreferenceFragment |
| extends SettingsPreferenceFragment { |
| |
| protected ToggleSwitch mToggleSwitch; |
| |
| protected String mPreferenceKey; |
| protected Preference mSummaryPreference; |
| |
| protected CharSequence mSettingsTitle; |
| protected Intent mSettingsIntent; |
| |
| // TODO: Showing sub-sub fragment does not handle the activity title |
| // so we do it but this is wrong. Do a real fix when there is time. |
| private CharSequence mOldActivityTitle; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| PreferenceScreen preferenceScreen = getPreferenceManager().createPreferenceScreen( |
| getActivity()); |
| setPreferenceScreen(preferenceScreen); |
| mSummaryPreference = new Preference(getActivity()) { |
| @Override |
| protected void onBindView(View view) { |
| super.onBindView(view); |
| TextView summaryView = (TextView) view.findViewById(R.id.summary); |
| summaryView.setText(getSummary()); |
| sendAccessibilityEvent(summaryView); |
| } |
| |
| private void sendAccessibilityEvent(View view) { |
| // Since the view is still not attached we create, populate, |
| // and send the event directly since we do not know when it |
| // will be attached and posting commands is not as clean. |
| AccessibilityManager accessibilityManager = |
| AccessibilityManager.getInstance(getActivity()); |
| if (accessibilityManager.isEnabled()) { |
| AccessibilityEvent event = AccessibilityEvent.obtain(); |
| event.setEventType(AccessibilityEvent.TYPE_VIEW_FOCUSED); |
| view.onInitializeAccessibilityEvent(event); |
| view.dispatchPopulateAccessibilityEvent(event); |
| accessibilityManager.sendAccessibilityEvent(event); |
| } |
| } |
| }; |
| mSummaryPreference.setPersistent(false); |
| mSummaryPreference.setLayoutResource(R.layout.text_description_preference); |
| preferenceScreen.addPreference(mSummaryPreference); |
| } |
| |
| @Override |
| public void onViewCreated(View view, Bundle savedInstanceState) { |
| super.onViewCreated(view, savedInstanceState); |
| onInstallActionBarToggleSwitch(); |
| onProcessArguments(getArguments()); |
| // Set a transparent drawable to prevent use of the default one. |
| getListView().setSelector(new ColorDrawable(Color.TRANSPARENT)); |
| getListView().setDivider(null); |
| } |
| |
| @Override |
| public void onDestroyView() { |
| getActivity().getActionBar().setCustomView(null); |
| if (mOldActivityTitle != null) { |
| getActivity().getActionBar().setTitle(mOldActivityTitle); |
| } |
| mToggleSwitch.setOnBeforeCheckedChangeListener(null); |
| super.onDestroyView(); |
| } |
| |
| protected abstract void onPreferenceToggled(String preferenceKey, boolean enabled); |
| |
| @Override |
| public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { |
| super.onCreateOptionsMenu(menu, inflater); |
| MenuItem menuItem = menu.add(mSettingsTitle); |
| menuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); |
| menuItem.setIntent(mSettingsIntent); |
| } |
| |
| protected void onInstallActionBarToggleSwitch() { |
| mToggleSwitch = createAndAddActionBarToggleSwitch(getActivity()); |
| } |
| |
| private ToggleSwitch createAndAddActionBarToggleSwitch(Activity activity) { |
| ToggleSwitch toggleSwitch = new ToggleSwitch(activity); |
| final int padding = activity.getResources().getDimensionPixelSize( |
| R.dimen.action_bar_switch_padding); |
| toggleSwitch.setPaddingRelative(0, 0, padding, 0); |
| activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM, |
| ActionBar.DISPLAY_SHOW_CUSTOM); |
| activity.getActionBar().setCustomView(toggleSwitch, |
| new ActionBar.LayoutParams(ActionBar.LayoutParams.WRAP_CONTENT, |
| ActionBar.LayoutParams.WRAP_CONTENT, |
| Gravity.CENTER_VERTICAL | Gravity.END)); |
| return toggleSwitch; |
| } |
| |
| protected void onProcessArguments(Bundle arguments) { |
| // Key. |
| mPreferenceKey = arguments.getString(EXTRA_PREFERENCE_KEY); |
| // Enabled. |
| final boolean enabled = arguments.getBoolean(EXTRA_CHECKED); |
| mToggleSwitch.setCheckedInternal(enabled); |
| // Title. |
| PreferenceActivity activity = (PreferenceActivity) getActivity(); |
| if (!activity.onIsMultiPane() || activity.onIsHidingHeaders()) { |
| mOldActivityTitle = getActivity().getTitle(); |
| String title = arguments.getString(EXTRA_TITLE); |
| getActivity().getActionBar().setTitle(title); |
| } |
| // Summary. |
| CharSequence summary = arguments.getCharSequence(EXTRA_SUMMARY); |
| mSummaryPreference.setSummary(summary); |
| } |
| } |
| |
| private static abstract class SettingsContentObserver extends ContentObserver { |
| |
| public SettingsContentObserver(Handler handler) { |
| super(handler); |
| } |
| |
| public void register(ContentResolver contentResolver) { |
| contentResolver.registerContentObserver(Settings.Secure.getUriFor( |
| Settings.Secure.ACCESSIBILITY_ENABLED), false, this); |
| contentResolver.registerContentObserver(Settings.Secure.getUriFor( |
| Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES), false, this); |
| } |
| |
| public void unregister(ContentResolver contentResolver) { |
| contentResolver.unregisterContentObserver(this); |
| } |
| |
| @Override |
| public abstract void onChange(boolean selfChange, Uri uri); |
| } |
| } |
