Android Open Source - Locast-Core-Android Authorable Utils

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License

The source code is released under:

GNU General Public License

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Java Source Code

package edu.mit.mobile.android.locast.data.interfaces;
//from ww w  .  ja va  2  s  . c  o m
import android.accounts.Account;
import android.accounts.AccountManager;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import edu.mit.mobile.android.locast.accounts.AbsLocastAuthenticationService;
import edu.mit.mobile.android.locast.accounts.AbsLocastAuthenticator;
import edu.mit.mobile.android.locast.data.JsonSyncableItem.SyncFieldMap;
import edu.mit.mobile.android.locast.data.JsonSyncableItem.SyncItem;
import edu.mit.mobile.android.locast.data.JsonSyncableItem.SyncMapChain;
import edu.mit.mobile.android.locast.data.SyncMap;

/**
 * The content item has an author.
 *
 */
public class AuthorableUtils {

    /**
     * Adds the author information from the provided account to the given ContentValues
     *
     * @param context
     * @param account
     * @param cv
     * @return
     */
    public static final ContentValues putAuthorInformation(Context context, Account account,
            ContentValues cv) {
        final AccountManager am = AccountManager.get(context);
        final String name = am.getUserData(account,
                AbsLocastAuthenticationService.USERDATA_DISPLAY_NAME);
        final String userUri = am.getUserData(account,
                AbsLocastAuthenticationService.USERDATA_USER_URI);

        // TODO this could probably be fixed so the user info is stored in a separate table.
        cv.put(Authorable.COL_AUTHOR, name);
        cv.put(Authorable.COL_AUTHOR_URI, userUri);

        return cv;
    }

    /**
     * The current user can be gotten using {@link AbsLocastAuthenticator#getUserUri(Context)}. This
     * requires that the cursor has loaded {@link Authorable#COL_AUTHOR_URI}.
     *
     * @param userUri
     *            the user in question
     * @param c
     *            a cursor pointing at an item's row
     * @return true if the item is editable by the specified user.
     */
    public static boolean canEdit(String userUri, Cursor c) {
        if (userUri == null || userUri.length() == 0) {
            throw new IllegalArgumentException("userUri must not be null or empty");
        }

        final String itemAuthor = c.getString(c.getColumnIndexOrThrow(Authorable.COL_AUTHOR_URI));

        return userUri.equals(itemAuthor);
    };

    public static Uri getAuthoredBy(Uri queryableUri, String authorUri) {
        return queryableUri.buildUpon().appendQueryParameter(Authorable.COL_AUTHOR_URI, authorUri)
                .build();
    }

    public static final SyncMap SYNC_MAP = new AuthorableSyncMap();

    public static class AuthorableSyncMap extends SyncMap {
        /**
         *
         */
        private static final long serialVersionUID = 8280880578168051946L;

        public AuthorableSyncMap() {
            final SyncMap authorSync = new SyncMap();
            authorSync.put(Authorable.COL_AUTHOR, new SyncFieldMap("display_name",
                    SyncFieldMap.STRING, SyncItem.FLAG_OPTIONAL));
            authorSync.put(Authorable.COL_AUTHOR_URI, new SyncFieldMap("uri", SyncFieldMap.STRING));
            put("_author", new SyncMapChain("author", authorSync, SyncItem.SYNC_FROM));
        }
    }
}

Java Source Code List