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/*
+---------------------------------------------------------------------------+
| Facebook Development Platform Java Client |
+---------------------------------------------------------------------------+
| Copyright (c) 2007 Facebook, Inc. |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| |
| 1. Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| 2. Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+---------------------------------------------------------------------------+
| For help with this library, contact [email protected] |
+---------------------------------------------------------------------------+
*/
package com.google.code.facebookapi;
import java.util.HashMap;
import java.util.Map;
/**
* List of URL parameters added by Facebook.
*
* @see http://wiki.developers.facebook.com/index.php/Authorizing_Applications
*/
public enum FacebookParam implements CharSequence {
//
SIGNATURE,
ADDED("added"),
API_KEY("api_key"),
FRIENDS("friends"),
LOCALE("locale"),
TIME("time"),
USER("user"),
CANVAS_USER("canvas_user"),
SESSION_KEY("session_key"),
EXPIRES("expires"),
PROFILE_UPDATE_TIME("profile_update_time"),
EXT_PERMS("ext_perms"),
IN_CANVAS("in_canvas"),
IN_PROFILE_TAB("in_profile_tab"),
PROFILE_USER("profile_user"),
PROFILE_SESSION_KEY("profile_session_key"),
PAGE_ID("page_id"),
PAGE_ADDED("page_added"),
REQUEST_METHOD("request_method"),
IN_NEW_FACEBOOK("in_new_facebook"),
IN_IFRAME("in_iframe"),
// parameters passed from a Facebook Page
IS_ADMIN("is_admin"),
IS_FAN("is_fan"),
TYPE("type"),
// for use in javascript
SS("ss"),
// SMS sig params
SMS("sms"),
MESSAGE("message"),
SMS_SID("sms_sid"),
SMS_NEW_USER("sms_new_user"),
POSITION_FIX("position_fix"),
// other
UNINSTALL("uninstall")
//
;
private static final Map _lookupTable;
static {
_lookupTable = new HashMap();
for ( FacebookParam param : FacebookParam.values() ) {
_lookupTable.put( param.toString(), param );
}
}
/**
* Retrieves the FacebookParam corresponding to the supplied String key.
*
* @param key
* a possible FacebookParam
* @return the matching FacebookParam or null if there's no match
*/
public static FacebookParam get( String key ) {
return _lookupTable.get( key );
}
/**
* Indicates whether a given key is in the FacebookParam namespace
*
* @param key
* @return boolean
*/
public static boolean isInNamespace( String key ) {
return null != key && key.startsWith( "fb_sig" );
}
/**
* Check to see if a given parameter name is a signature parameter.
*
* @param key
* the parameter name to check
*
* @return true if the parameter is a signature parameter false otherwise
*/
public static boolean isSignature( String key ) {
return null != key && key.equals( "fb_sig" );
}
private String _paramName;
private String _signatureName;
private FacebookParam() {
this._paramName = "fb_sig";
}
private FacebookParam( String name ) {
this._signatureName = name;
this._paramName = "fb_sig_" + name;
}
/* Implementing CharSequence */
public char charAt( int index ) {
return this._paramName.charAt( index );
}
public int length() {
return this._paramName.length();
}
public CharSequence subSequence( int start, int end ) {
return this._paramName.subSequence( start, end );
}
public String toString() {
return this._paramName;
}
/**
* @return the signature name of this parameter
*/
public String getSignatureName() {
return this._signatureName;
}
/**
* Remove the Facebook signature prefix from the specified parameter.
*
* @param paramName
* the name to remove the prefix from.
*
* @return the specified name, with the Facebook signature prefix removed, if necessary.
*/
public static String stripSignaturePrefix( String paramName ) {
if ( paramName != null && paramName.startsWith( "fb_sig_" ) ) {
return paramName.substring( 7 );
}
return paramName;
}
}
