src/com/android/settings/accounts/ChooseAccountActivity.java - platform/packages/apps/Settings - Git at Google

 /*
  * 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.accounts;

 import android.accounts.AccountManager;
 import android.accounts.AuthenticatorDescription;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SyncAdapterType;
 import android.content.pm.PackageManager;
 import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.util.Log;

 import com.android.internal.util.CharSequences;
 import com.android.settings.R;
 import com.android.settings.Utils;

 import com.google.android.collect.Maps;

 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;

 import static android.content.Intent.EXTRA_USER;

 /**
  * Activity asking a user to select an account to be set up.
  *
  * An extra {@link UserHandle} can be specified in the intent as {@link EXTRA_USER}, if the user for
  * which the action needs to be performed is different to the one the Settings App will run in.
  */
 public class ChooseAccountActivity extends PreferenceActivity {

     private static final String TAG = "ChooseAccountActivity";
     private String[] mAuthorities;
     private PreferenceGroup mAddAccountGroup;
     private final ArrayList<ProviderEntry> mProviderList = new ArrayList<ProviderEntry>();
     public HashSet<String> mAccountTypesFilter;
     private AuthenticatorDescription[] mAuthDescs;
     private HashMap<String, ArrayList<String>> mAccountTypeToAuthorities = null;
     private Map<String, AuthenticatorDescription> mTypeToAuthDescription
             = new HashMap<String, AuthenticatorDescription>();
     // The UserHandle of the user we are choosing an account for
     private UserHandle mUserHandle;
     private UserManager mUm;

     private static class ProviderEntry implements Comparable<ProviderEntry> {
         private final CharSequence name;
         private final String type;
         ProviderEntry(CharSequence providerName, String accountType) {
             name = providerName;
             type = accountType;
         }

         public int compareTo(ProviderEntry another) {
             if (name == null) {
                 return -1;
             }
             if (another.name == null) {
                 return +1;
             }
             return CharSequences.compareToIgnoreCase(name, another.name);
         }
     }

     @Override
     protected void onCreate(Bundle icicle) {
         super.onCreate(icicle);

         setContentView(R.layout.add_account_screen);
         addPreferencesFromResource(R.xml.add_account_settings);
         mAuthorities = getIntent().getStringArrayExtra(
                 AccountPreferenceBase.AUTHORITIES_FILTER_KEY);
         String[] accountTypesFilter = getIntent().getStringArrayExtra(
                 AccountPreferenceBase.ACCOUNT_TYPES_FILTER_KEY);
         if (accountTypesFilter != null) {
             mAccountTypesFilter = new HashSet<String>();
             for (String accountType : accountTypesFilter) {
                 mAccountTypesFilter.add(accountType);
             }
         }
         mAddAccountGroup = getPreferenceScreen();
         mUm = UserManager.get(this);
         mUserHandle = Utils.getSecureTargetUser(getActivityToken(), mUm, null /* arguments */,
                 getIntent().getExtras());
         updateAuthDescriptions();
     }

     /**
      * Updates provider icons. Subclasses should call this in onCreate()
      * and update any UI that depends on AuthenticatorDescriptions in onAuthDescriptionsUpdated().
      */
     private void updateAuthDescriptions() {
         mAuthDescs = AccountManager.get(this).getAuthenticatorTypesAsUser(
                 mUserHandle.getIdentifier());
         for (int i = 0; i < mAuthDescs.length; i++) {
             mTypeToAuthDescription.put(mAuthDescs[i].type, mAuthDescs[i]);
         }
         onAuthDescriptionsUpdated();
     }

     private void onAuthDescriptionsUpdated() {
         // Create list of providers to show on preference screen
         for (int i = 0; i < mAuthDescs.length; i++) {
             String accountType = mAuthDescs[i].type;
             CharSequence providerName = getLabelForType(accountType);

             // Skip preferences for authorities not specified. If no authorities specified,
             // then include them all.
             ArrayList<String> accountAuths = getAuthoritiesForAccountType(accountType);
             boolean addAccountPref = true;
             if (mAuthorities != null && mAuthorities.length > 0 && accountAuths != null) {
                 addAccountPref = false;
                 for (int k = 0; k < mAuthorities.length; k++) {
                     if (accountAuths.contains(mAuthorities[k])) {
                         addAccountPref = true;
                         break;
                     }
                 }
             }
             if (addAccountPref && mAccountTypesFilter != null
                     && !mAccountTypesFilter.contains(accountType)) {
                 addAccountPref = false;
             }
             if (addAccountPref) {
                 mProviderList.add(new ProviderEntry(providerName, accountType));
             } else {
                 if (Log.isLoggable(TAG, Log.VERBOSE)) {
                     Log.v(TAG, "Skipped pref " + providerName + ": has no authority we need");
                 }
             }
         }

         if (mProviderList.size() == 1) {
             // If there's only one provider that matches, just run it.
             finishWithAccountType(mProviderList.get(0).type);
         } else if (mProviderList.size() > 0) {
             Collections.sort(mProviderList);
             mAddAccountGroup.removeAll();
             for (ProviderEntry pref : mProviderList) {
                 Drawable drawable = getDrawableForType(pref.type);
                 ProviderPreference p =
                         new ProviderPreference(this, pref.type, drawable, pref.name);
                 mAddAccountGroup.addPreference(p);
             }
         } else {
             if (Log.isLoggable(TAG, Log.VERBOSE)) {
                 final StringBuilder auths = new StringBuilder();
                 for (String a : mAuthorities) {
                     auths.append(a);
                     auths.append(' ');
                 }
                 Log.v(TAG, "No providers found for authorities: " + auths);
             }
             setResult(RESULT_CANCELED);
             finish();
         }
     }

     public ArrayList<String> getAuthoritiesForAccountType(String type) {
         if (mAccountTypeToAuthorities == null) {
             mAccountTypeToAuthorities = Maps.newHashMap();
             SyncAdapterType[] syncAdapters = ContentResolver.getSyncAdapterTypesAsUser(
                     mUserHandle.getIdentifier());
             for (int i = 0, n = syncAdapters.length; i < n; i++) {
                 final SyncAdapterType sa = syncAdapters[i];
                 ArrayList<String> authorities = mAccountTypeToAuthorities.get(sa.accountType);
                 if (authorities == null) {
                     authorities = new ArrayList<String>();
                     mAccountTypeToAuthorities.put(sa.accountType, authorities);
                 }
                 if (Log.isLoggable(TAG, Log.VERBOSE)) {
                     Log.d(TAG, "added authority " + sa.authority + " to accountType "
                             + sa.accountType);
                 }
                 authorities.add(sa.authority);
             }
         }
         return mAccountTypeToAuthorities.get(type);
     }

     /**
      * Gets an icon associated with a particular account type. If none found, return null.
      * @param accountType the type of account
      * @return a drawable for the icon or null if one cannot be found.
      */
     protected Drawable getDrawableForType(final String accountType) {
         Drawable icon = null;
         if (mTypeToAuthDescription.containsKey(accountType)) {
             try {
                 AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType);
                 Context authContext = createPackageContextAsUser(desc.packageName, 0, mUserHandle);
                 icon = getPackageManager().getUserBadgedIcon(
                         authContext.getDrawable(desc.iconId), mUserHandle);
             } catch (PackageManager.NameNotFoundException e) {
                 // TODO: place holder icon for missing account icons?
                 Log.w(TAG, "No icon name for account type " + accountType);
             } catch (Resources.NotFoundException e) {
                 // TODO: place holder icon for missing account icons?
                 Log.w(TAG, "No icon resource for account type " + accountType);
             }
         }
         return icon;
     }

     /**
      * Gets the label associated with a particular account type. If none found, return null.
      * @param accountType the type of account
      * @return a CharSequence for the label or null if one cannot be found.
      */
     protected CharSequence getLabelForType(final String accountType) {
         CharSequence label = null;
         if (mTypeToAuthDescription.containsKey(accountType)) {
             try {
                 AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType);
                 Context authContext = createPackageContextAsUser(desc.packageName, 0, mUserHandle);
                 label = authContext.getResources().getText(desc.labelId);
             } catch (PackageManager.NameNotFoundException e) {
                 Log.w(TAG, "No label name for account type " + accountType);
             } catch (Resources.NotFoundException e) {
                 Log.w(TAG, "No label resource for account type " + accountType);
             }
         }
         return label;
     }

     @Override
     public boolean onPreferenceTreeClick(PreferenceScreen preferences, Preference preference) {
         if (preference instanceof ProviderPreference) {
             ProviderPreference pref = (ProviderPreference) preference;
             if (Log.isLoggable(TAG, Log.VERBOSE)) {
                 Log.v(TAG, "Attempting to add account of type " + pref.getAccountType());
             }
             finishWithAccountType(pref.getAccountType());
         }
         return true;
     }

     private void finishWithAccountType(String accountType) {
         Intent intent = new Intent();
         intent.putExtra(AddAccountSettings.EXTRA_SELECTED_ACCOUNT, accountType);
         intent.putExtra(EXTRA_USER, mUserHandle);
         setResult(RESULT_OK, intent);
         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.accounts;

	import android.accounts.AccountManager;
	import android.accounts.AuthenticatorDescription;
	import android.content.ContentResolver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.SyncAdapterType;
	import android.content.pm.PackageManager;
	import android.content.res.Resources;
	import android.graphics.drawable.Drawable;
	import android.os.Bundle;
	import android.os.UserHandle;
	import android.os.UserManager;
	import android.preference.Preference;
	import android.preference.PreferenceActivity;
	import android.preference.PreferenceGroup;
	import android.preference.PreferenceScreen;
	import android.util.Log;

	import com.android.internal.util.CharSequences;
	import com.android.settings.R;
	import com.android.settings.Utils;

	import com.google.android.collect.Maps;

	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.HashSet;
	import java.util.Map;

	import static android.content.Intent.EXTRA_USER;

	/**
	* Activity asking a user to select an account to be set up.
	*
	* An extra {@link UserHandle} can be specified in the intent as {@link EXTRA_USER}, if the user for
	* which the action needs to be performed is different to the one the Settings App will run in.
	*/
	public class ChooseAccountActivity extends PreferenceActivity {

	private static final String TAG = "ChooseAccountActivity";
	private String[] mAuthorities;
	private PreferenceGroup mAddAccountGroup;
	private final ArrayList<ProviderEntry> mProviderList = new ArrayList<ProviderEntry>();
	public HashSet<String> mAccountTypesFilter;
	private AuthenticatorDescription[] mAuthDescs;
	private HashMap<String, ArrayList<String>> mAccountTypeToAuthorities = null;
	private Map<String, AuthenticatorDescription> mTypeToAuthDescription
	= new HashMap<String, AuthenticatorDescription>();
	// The UserHandle of the user we are choosing an account for
	private UserHandle mUserHandle;
	private UserManager mUm;

	private static class ProviderEntry implements Comparable<ProviderEntry> {
	private final CharSequence name;
	private final String type;
	ProviderEntry(CharSequence providerName, String accountType) {
	name = providerName;
	type = accountType;
	}

	public int compareTo(ProviderEntry another) {
	if (name == null) {
	return -1;
	}
	if (another.name == null) {
	return +1;
	}
	return CharSequences.compareToIgnoreCase(name, another.name);
	}
	}

	@Override
	protected void onCreate(Bundle icicle) {
	super.onCreate(icicle);

	setContentView(R.layout.add_account_screen);
	addPreferencesFromResource(R.xml.add_account_settings);
	mAuthorities = getIntent().getStringArrayExtra(
	AccountPreferenceBase.AUTHORITIES_FILTER_KEY);
	String[] accountTypesFilter = getIntent().getStringArrayExtra(
	AccountPreferenceBase.ACCOUNT_TYPES_FILTER_KEY);
	if (accountTypesFilter != null) {
	mAccountTypesFilter = new HashSet<String>();
	for (String accountType : accountTypesFilter) {
	mAccountTypesFilter.add(accountType);
	}
	}
	mAddAccountGroup = getPreferenceScreen();
	mUm = UserManager.get(this);
	mUserHandle = Utils.getSecureTargetUser(getActivityToken(), mUm, null /* arguments */,
	getIntent().getExtras());
	updateAuthDescriptions();
	}

	/**
	* Updates provider icons. Subclasses should call this in onCreate()
	* and update any UI that depends on AuthenticatorDescriptions in onAuthDescriptionsUpdated().
	*/
	private void updateAuthDescriptions() {
	mAuthDescs = AccountManager.get(this).getAuthenticatorTypesAsUser(
	mUserHandle.getIdentifier());
	for (int i = 0; i < mAuthDescs.length; i++) {
	mTypeToAuthDescription.put(mAuthDescs[i].type, mAuthDescs[i]);
	}
	onAuthDescriptionsUpdated();
	}

	private void onAuthDescriptionsUpdated() {
	// Create list of providers to show on preference screen
	for (int i = 0; i < mAuthDescs.length; i++) {
	String accountType = mAuthDescs[i].type;
	CharSequence providerName = getLabelForType(accountType);

	// Skip preferences for authorities not specified. If no authorities specified,
	// then include them all.
	ArrayList<String> accountAuths = getAuthoritiesForAccountType(accountType);
	boolean addAccountPref = true;
	if (mAuthorities != null && mAuthorities.length > 0 && accountAuths != null) {
	addAccountPref = false;
	for (int k = 0; k < mAuthorities.length; k++) {
	if (accountAuths.contains(mAuthorities[k])) {
	addAccountPref = true;
	break;
	}
	}
	}
	if (addAccountPref && mAccountTypesFilter != null
	&& !mAccountTypesFilter.contains(accountType)) {
	addAccountPref = false;
	}
	if (addAccountPref) {
	mProviderList.add(new ProviderEntry(providerName, accountType));
	} else {
	if (Log.isLoggable(TAG, Log.VERBOSE)) {
	Log.v(TAG, "Skipped pref " + providerName + ": has no authority we need");
	}
	}
	}

	if (mProviderList.size() == 1) {
	// If there's only one provider that matches, just run it.
	finishWithAccountType(mProviderList.get(0).type);
	} else if (mProviderList.size() > 0) {
	Collections.sort(mProviderList);
	mAddAccountGroup.removeAll();
	for (ProviderEntry pref : mProviderList) {
	Drawable drawable = getDrawableForType(pref.type);
	ProviderPreference p =
	new ProviderPreference(this, pref.type, drawable, pref.name);
	mAddAccountGroup.addPreference(p);
	}
	} else {
	if (Log.isLoggable(TAG, Log.VERBOSE)) {
	final StringBuilder auths = new StringBuilder();
	for (String a : mAuthorities) {
	auths.append(a);
	auths.append(' ');
	}
	Log.v(TAG, "No providers found for authorities: " + auths);
	}
	setResult(RESULT_CANCELED);
	finish();
	}
	}

	public ArrayList<String> getAuthoritiesForAccountType(String type) {
	if (mAccountTypeToAuthorities == null) {
	mAccountTypeToAuthorities = Maps.newHashMap();
	SyncAdapterType[] syncAdapters = ContentResolver.getSyncAdapterTypesAsUser(
	mUserHandle.getIdentifier());
	for (int i = 0, n = syncAdapters.length; i < n; i++) {
	final SyncAdapterType sa = syncAdapters[i];
	ArrayList<String> authorities = mAccountTypeToAuthorities.get(sa.accountType);
	if (authorities == null) {
	authorities = new ArrayList<String>();
	mAccountTypeToAuthorities.put(sa.accountType, authorities);
	}
	if (Log.isLoggable(TAG, Log.VERBOSE)) {
	Log.d(TAG, "added authority " + sa.authority + " to accountType "
	+ sa.accountType);
	}
	authorities.add(sa.authority);
	}
	}
	return mAccountTypeToAuthorities.get(type);
	}

	/**
	* Gets an icon associated with a particular account type. If none found, return null.
	* @param accountType the type of account
	* @return a drawable for the icon or null if one cannot be found.
	*/
	protected Drawable getDrawableForType(final String accountType) {
	Drawable icon = null;
	if (mTypeToAuthDescription.containsKey(accountType)) {
	try {
	AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType);
	Context authContext = createPackageContextAsUser(desc.packageName, 0, mUserHandle);
	icon = getPackageManager().getUserBadgedIcon(
	authContext.getDrawable(desc.iconId), mUserHandle);
	} catch (PackageManager.NameNotFoundException e) {
	// TODO: place holder icon for missing account icons?
	Log.w(TAG, "No icon name for account type " + accountType);
	} catch (Resources.NotFoundException e) {
	// TODO: place holder icon for missing account icons?
	Log.w(TAG, "No icon resource for account type " + accountType);
	}
	}
	return icon;
	}

	/**
	* Gets the label associated with a particular account type. If none found, return null.
	* @param accountType the type of account
	* @return a CharSequence for the label or null if one cannot be found.
	*/
	protected CharSequence getLabelForType(final String accountType) {
	CharSequence label = null;
	if (mTypeToAuthDescription.containsKey(accountType)) {
	try {
	AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType);
	Context authContext = createPackageContextAsUser(desc.packageName, 0, mUserHandle);
	label = authContext.getResources().getText(desc.labelId);
	} catch (PackageManager.NameNotFoundException e) {
	Log.w(TAG, "No label name for account type " + accountType);
	} catch (Resources.NotFoundException e) {
	Log.w(TAG, "No label resource for account type " + accountType);
	}
	}
	return label;
	}

	@Override
	public boolean onPreferenceTreeClick(PreferenceScreen preferences, Preference preference) {
	if (preference instanceof ProviderPreference) {
	ProviderPreference pref = (ProviderPreference) preference;
	if (Log.isLoggable(TAG, Log.VERBOSE)) {
	Log.v(TAG, "Attempting to add account of type " + pref.getAccountType());
	}
	finishWithAccountType(pref.getAccountType());
	}
	return true;
	}

	private void finishWithAccountType(String accountType) {
	Intent intent = new Intent();
	intent.putExtra(AddAccountSettings.EXTRA_SELECTED_ACCOUNT, accountType);
	intent.putExtra(EXTRA_USER, mUserHandle);
	setResult(RESULT_OK, intent);
	finish();
	}
	}