src/com/android/settings/ChooseLockGeneric.java - LeafOS-Project/android_packages_apps_Settings - Gitiles

 /*
  * Copyright (C) 2010 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 com.android.internal.widget.LockPatternUtils;

 import android.app.Activity;
 import android.app.admin.DevicePolicyManager;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceScreen;

 public class ChooseLockGeneric extends PreferenceActivity {

     @Override
     public Intent getIntent() {
         Intent modIntent = new Intent(super.getIntent());
         modIntent.putExtra(EXTRA_SHOW_FRAGMENT, ChooseLockGenericFragment.class.getName());
         modIntent.putExtra(EXTRA_NO_HEADERS, true);
         return modIntent;
     }

     public static class ChooseLockGenericFragment extends SettingsPreferenceFragment {
         private static final int MIN_PASSWORD_LENGTH = 4;
         private static final String KEY_UNLOCK_SET_OFF = "unlock_set_off";
         private static final String KEY_UNLOCK_SET_NONE = "unlock_set_none";
         private static final String KEY_UNLOCK_SET_PIN = "unlock_set_pin";
         private static final String KEY_UNLOCK_SET_PASSWORD = "unlock_set_password";
         private static final String KEY_UNLOCK_SET_PATTERN = "unlock_set_pattern";
         private static final int CONFIRM_EXISTING_REQUEST = 100;
         private static final String PASSWORD_CONFIRMED = "password_confirmed";
         private static final String CONFIRM_CREDENTIALS = "confirm_credentials";

         private ChooseLockSettingsHelper mChooseLockSettingsHelper;
         private DevicePolicyManager mDPM;
         private boolean mPasswordConfirmed = false;

         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);

             mDPM = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
             mChooseLockSettingsHelper = new ChooseLockSettingsHelper(this.getActivity());

             if (savedInstanceState != null) {
                 mPasswordConfirmed = savedInstanceState.getBoolean(PASSWORD_CONFIRMED);
             }

             if (!mPasswordConfirmed) {
                 ChooseLockSettingsHelper helper = new ChooseLockSettingsHelper(this.getActivity(), this);
                 if (!helper.launchConfirmationActivity(CONFIRM_EXISTING_REQUEST, null, null)) {
                     mPasswordConfirmed = true; // no password set, so no need to confirm
                     updatePreferencesOrFinish();
                 }
             } else {
                 updatePreferencesOrFinish();
             }
         }

         @Override
         public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
                 Preference preference) {
             final String key = preference.getKey();
             boolean handled = true;
             if (KEY_UNLOCK_SET_OFF.equals(key)) {
                 updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED, true);
             } else if (KEY_UNLOCK_SET_NONE.equals(key)) {
                 updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED, false);
             } else if (KEY_UNLOCK_SET_PATTERN.equals(key)) {
                 updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_SOMETHING, false);
             } else if (KEY_UNLOCK_SET_PIN.equals(key)) {
                 updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_NUMERIC, false);
             } else if (KEY_UNLOCK_SET_PASSWORD.equals(key)) {
                 updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC, false);
             } else {
                 handled = false;
             }
             return handled;
         }

         @Override
         public void onActivityResult(int requestCode, int resultCode, Intent data) {
             super.onActivityResult(requestCode, resultCode, data);
             if (requestCode == CONFIRM_EXISTING_REQUEST && resultCode == Activity.RESULT_OK) {
                 mPasswordConfirmed = true;
                 updatePreferencesOrFinish();
             } else {
                 getActivity().setResult(Activity.RESULT_CANCELED);
                 finish();
             }
         }

         @Override
         public void onSaveInstanceState(Bundle outState) {
             super.onSaveInstanceState(outState);
             // Saved so we don't force user to re-enter their password if configuration changes
             outState.putBoolean(PASSWORD_CONFIRMED, mPasswordConfirmed);
         }

         private void updatePreferencesOrFinish() {
             int quality = getActivity().getIntent().getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY, -1);
             if (quality == -1) {
                 // If caller didn't specify password quality, show the UI and allow the user to choose.
                 quality = mChooseLockSettingsHelper.utils().getKeyguardStoredPasswordQuality();
                 final PreferenceScreen prefScreen = getPreferenceScreen();
                 if (prefScreen != null) {
                     prefScreen.removeAll();
                 }
                 addPreferencesFromResource(R.xml.security_settings_picker);
                 disableUnusablePreferences(mDPM.getPasswordQuality(null));
             } else {
                 updateUnlockMethodAndFinish(quality, false);
             }
         }

         /***
          * Disables preferences that are less secure than required quality.
          *
          * @param quality the requested quality.
          */
         private void disableUnusablePreferences(final int quality) {
             final Preference picker = getPreferenceScreen().findPreference("security_picker_category");
             final PreferenceCategory cat = (PreferenceCategory) picker;
             final int preferenceCount = cat.getPreferenceCount();
             for (int i = 0; i < preferenceCount; i++) {
                 Preference pref = cat.getPreference(i);
                 if (pref instanceof PreferenceScreen) {
                     final String key = ((PreferenceScreen) pref).getKey();
                     boolean enabled = true;
                     if (KEY_UNLOCK_SET_OFF.equals(key)) {
                         enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
                     } else if (KEY_UNLOCK_SET_NONE.equals(key)) {
                         enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
                     } else if (KEY_UNLOCK_SET_PATTERN.equals(key)) {
                         enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_SOMETHING;
                     } else if (KEY_UNLOCK_SET_PIN.equals(key)) {
                         enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_NUMERIC;
                     } else if (KEY_UNLOCK_SET_PASSWORD.equals(key)) {
                         enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_COMPLEX;
                     }
                     if (!enabled) {
                         pref.setSummary(R.string.unlock_set_unlock_disabled_summary);
                         pref.setEnabled(false);
                     }
                 }
             }
         }

         /**
          * Invokes an activity to change the user's pattern, password or PIN based on given quality
          * and minimum quality specified by DevicePolicyManager. If quality is
          * {@link DevicePolicyManager#PASSWORD_QUALITY_UNSPECIFIED}, password is cleared.
          *
          * @param quality the desired quality. Ignored if DevicePolicyManager requires more security.
          * @param disabled whether or not to show LockScreen at all. Only meaningful when quality is
          * {@link DevicePolicyManager#PASSWORD_QUALITY_UNSPECIFIED}
          */
         void updateUnlockMethodAndFinish(int quality, boolean disabled) {
             // Sanity check. We should never get here without confirming user's existing password first.
             if (!mPasswordConfirmed) {
                 throw new IllegalStateException("Tried to update password without confirming first");
             }

             // Compare minimum allowed password quality and launch appropriate security setting method
             int minQuality = mDPM.getPasswordQuality(null);
             if (quality < minQuality) {
                 quality = minQuality;
             }
             if (quality >= DevicePolicyManager.PASSWORD_QUALITY_NUMERIC) {
                 int minLength = mDPM.getPasswordMinimumLength(null);
                 if (minLength < MIN_PASSWORD_LENGTH) {
                     minLength = MIN_PASSWORD_LENGTH;
                 }
                 final int maxLength = mDPM.getPasswordMaximumLength(quality);
                 Intent intent = new Intent().setClass(getActivity(), ChooseLockPassword.class);
                 intent.putExtra(LockPatternUtils.PASSWORD_TYPE_KEY, quality);
                 intent.putExtra(ChooseLockPassword.PASSWORD_MIN_KEY, minLength);
                 intent.putExtra(ChooseLockPassword.PASSWORD_MAX_KEY, maxLength);
                 intent.putExtra(CONFIRM_CREDENTIALS, false);
                 intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
                 startActivity(intent);
             } else if (quality == DevicePolicyManager.PASSWORD_QUALITY_SOMETHING) {
                 boolean showTutorial = !mChooseLockSettingsHelper.utils().isPatternEverChosen();
                 Intent intent = new Intent();
                 intent.setClass(getActivity(), showTutorial
                         ? ChooseLockPatternTutorial.class
                         : ChooseLockPattern.class);
                 intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
                 intent.putExtra("key_lock_method", "pattern");
                 intent.putExtra(CONFIRM_CREDENTIALS, false);
                 startActivity(intent);
             } else if (quality == DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) {
                 mChooseLockSettingsHelper.utils().clearLock();
                 mChooseLockSettingsHelper.utils().setLockScreenDisabled(disabled);
                 getActivity().setResult(Activity.RESULT_OK);
             }
             finish();
         }
     }
 }
	/*
	* Copyright (C) 2010 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 com.android.internal.widget.LockPatternUtils;

	import android.app.Activity;
	import android.app.admin.DevicePolicyManager;
	import android.content.Context;
	import android.content.Intent;
	import android.os.Bundle;
	import android.preference.Preference;
	import android.preference.PreferenceActivity;
	import android.preference.PreferenceCategory;
	import android.preference.PreferenceScreen;

	public class ChooseLockGeneric extends PreferenceActivity {

	@Override
	public Intent getIntent() {
	Intent modIntent = new Intent(super.getIntent());
	modIntent.putExtra(EXTRA_SHOW_FRAGMENT, ChooseLockGenericFragment.class.getName());
	modIntent.putExtra(EXTRA_NO_HEADERS, true);
	return modIntent;
	}

	public static class ChooseLockGenericFragment extends SettingsPreferenceFragment {
	private static final int MIN_PASSWORD_LENGTH = 4;
	private static final String KEY_UNLOCK_SET_OFF = "unlock_set_off";
	private static final String KEY_UNLOCK_SET_NONE = "unlock_set_none";
	private static final String KEY_UNLOCK_SET_PIN = "unlock_set_pin";
	private static final String KEY_UNLOCK_SET_PASSWORD = "unlock_set_password";
	private static final String KEY_UNLOCK_SET_PATTERN = "unlock_set_pattern";
	private static final int CONFIRM_EXISTING_REQUEST = 100;
	private static final String PASSWORD_CONFIRMED = "password_confirmed";
	private static final String CONFIRM_CREDENTIALS = "confirm_credentials";

	private ChooseLockSettingsHelper mChooseLockSettingsHelper;
	private DevicePolicyManager mDPM;
	private boolean mPasswordConfirmed = false;

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);

	mDPM = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
	mChooseLockSettingsHelper = new ChooseLockSettingsHelper(this.getActivity());

	if (savedInstanceState != null) {
	mPasswordConfirmed = savedInstanceState.getBoolean(PASSWORD_CONFIRMED);
	}

	if (!mPasswordConfirmed) {
	ChooseLockSettingsHelper helper = new ChooseLockSettingsHelper(this.getActivity(), this);
	if (!helper.launchConfirmationActivity(CONFIRM_EXISTING_REQUEST, null, null)) {
	mPasswordConfirmed = true; // no password set, so no need to confirm
	updatePreferencesOrFinish();
	}
	} else {
	updatePreferencesOrFinish();
	}
	}

	@Override
	public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
	Preference preference) {
	final String key = preference.getKey();
	boolean handled = true;
	if (KEY_UNLOCK_SET_OFF.equals(key)) {
	updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED, true);
	} else if (KEY_UNLOCK_SET_NONE.equals(key)) {
	updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED, false);
	} else if (KEY_UNLOCK_SET_PATTERN.equals(key)) {
	updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_SOMETHING, false);
	} else if (KEY_UNLOCK_SET_PIN.equals(key)) {
	updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_NUMERIC, false);
	} else if (KEY_UNLOCK_SET_PASSWORD.equals(key)) {
	updateUnlockMethodAndFinish(DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC, false);
	} else {
	handled = false;
	}
	return handled;
	}

	@Override
	public void onActivityResult(int requestCode, int resultCode, Intent data) {
	super.onActivityResult(requestCode, resultCode, data);
	if (requestCode == CONFIRM_EXISTING_REQUEST && resultCode == Activity.RESULT_OK) {
	mPasswordConfirmed = true;
	updatePreferencesOrFinish();
	} else {
	getActivity().setResult(Activity.RESULT_CANCELED);
	finish();
	}
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
	super.onSaveInstanceState(outState);
	// Saved so we don't force user to re-enter their password if configuration changes
	outState.putBoolean(PASSWORD_CONFIRMED, mPasswordConfirmed);
	}

	private void updatePreferencesOrFinish() {
	int quality = getActivity().getIntent().getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY, -1);
	if (quality == -1) {
	// If caller didn't specify password quality, show the UI and allow the user to choose.
	quality = mChooseLockSettingsHelper.utils().getKeyguardStoredPasswordQuality();
	final PreferenceScreen prefScreen = getPreferenceScreen();
	if (prefScreen != null) {
	prefScreen.removeAll();
	}
	addPreferencesFromResource(R.xml.security_settings_picker);
	disableUnusablePreferences(mDPM.getPasswordQuality(null));
	} else {
	updateUnlockMethodAndFinish(quality, false);
	}
	}

	/***
	* Disables preferences that are less secure than required quality.
	*
	* @param quality the requested quality.
	*/
	private void disableUnusablePreferences(final int quality) {
	final Preference picker = getPreferenceScreen().findPreference("security_picker_category");
	final PreferenceCategory cat = (PreferenceCategory) picker;
	final int preferenceCount = cat.getPreferenceCount();
	for (int i = 0; i < preferenceCount; i++) {
	Preference pref = cat.getPreference(i);
	if (pref instanceof PreferenceScreen) {
	final String key = ((PreferenceScreen) pref).getKey();
	boolean enabled = true;
	if (KEY_UNLOCK_SET_OFF.equals(key)) {
	enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
	} else if (KEY_UNLOCK_SET_NONE.equals(key)) {
	enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
	} else if (KEY_UNLOCK_SET_PATTERN.equals(key)) {
	enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_SOMETHING;
	} else if (KEY_UNLOCK_SET_PIN.equals(key)) {
	enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_NUMERIC;
	} else if (KEY_UNLOCK_SET_PASSWORD.equals(key)) {
	enabled = quality <= DevicePolicyManager.PASSWORD_QUALITY_COMPLEX;
	}
	if (!enabled) {
	pref.setSummary(R.string.unlock_set_unlock_disabled_summary);
	pref.setEnabled(false);
	}
	}
	}
	}

	/**
	* Invokes an activity to change the user's pattern, password or PIN based on given quality
	* and minimum quality specified by DevicePolicyManager. If quality is
	* {@link DevicePolicyManager#PASSWORD_QUALITY_UNSPECIFIED}, password is cleared.
	*
	* @param quality the desired quality. Ignored if DevicePolicyManager requires more security.
	* @param disabled whether or not to show LockScreen at all. Only meaningful when quality is
	* {@link DevicePolicyManager#PASSWORD_QUALITY_UNSPECIFIED}
	*/
	void updateUnlockMethodAndFinish(int quality, boolean disabled) {
	// Sanity check. We should never get here without confirming user's existing password first.
	if (!mPasswordConfirmed) {
	throw new IllegalStateException("Tried to update password without confirming first");
	}

	// Compare minimum allowed password quality and launch appropriate security setting method
	int minQuality = mDPM.getPasswordQuality(null);
	if (quality < minQuality) {
	quality = minQuality;
	}
	if (quality >= DevicePolicyManager.PASSWORD_QUALITY_NUMERIC) {
	int minLength = mDPM.getPasswordMinimumLength(null);
	if (minLength < MIN_PASSWORD_LENGTH) {
	minLength = MIN_PASSWORD_LENGTH;
	}
	final int maxLength = mDPM.getPasswordMaximumLength(quality);
	Intent intent = new Intent().setClass(getActivity(), ChooseLockPassword.class);
	intent.putExtra(LockPatternUtils.PASSWORD_TYPE_KEY, quality);
	intent.putExtra(ChooseLockPassword.PASSWORD_MIN_KEY, minLength);
	intent.putExtra(ChooseLockPassword.PASSWORD_MAX_KEY, maxLength);
	intent.putExtra(CONFIRM_CREDENTIALS, false);
	intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
	startActivity(intent);
	} else if (quality == DevicePolicyManager.PASSWORD_QUALITY_SOMETHING) {
	boolean showTutorial = !mChooseLockSettingsHelper.utils().isPatternEverChosen();
	Intent intent = new Intent();
	intent.setClass(getActivity(), showTutorial
	? ChooseLockPatternTutorial.class
	: ChooseLockPattern.class);
	intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
	intent.putExtra("key_lock_method", "pattern");
	intent.putExtra(CONFIRM_CREDENTIALS, false);
	startActivity(intent);
	} else if (quality == DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) {
	mChooseLockSettingsHelper.utils().clearLock();
	mChooseLockSettingsHelper.utils().setLockScreenDisabled(disabled);
	getActivity().setResult(Activity.RESULT_OK);
	}
	finish();
	}
	}
	}