Added authorization URL to the Apis

src/main/java/org/scribe/builder/api/DefaultApi10a.java

@@ -117,6 +117,15 @@ public abstract class DefaultApi10a implements Api
    */
   public abstract String getAccessTokenEndpoint();
   
+  /**
+   * Returns the URL where you should redirect your users to authenticate
+   * your application.
+   * 
+   * @param requestToken the request token you need to authorize
+   * @return the URL where you should redirect your users
+   */
+  public abstract String getAuthorizationUrl(Token requestToken);
+  
   /**
    * Returns the {@link OAuthService} for this Api
    * 

src/main/java/org/scribe/builder/api/EvernoteApi.java

@@ -1,9 +1,12 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
 import org.scribe.model.Verb;
 
 public class EvernoteApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "https://www.evernote.com/OAuth.action?oauth_token=%s";
+  
   @Override
   public Verb getRequestTokenVerb()
   {
@@ -27,4 +30,10 @@ public class EvernoteApi extends DefaultApi10a
 	{
 		return "https://www.evernote.com/oauth";
 	}
+	
+	@Override
+	public String getAuthorizationUrl(Token requestToken)
+	{
+	  return String.format(AUTHORIZATION_URL, requestToken.getToken());
+	}
 }

src/main/java/org/scribe/builder/api/FoursquareApi.java

@@ -1,7 +1,11 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class FoursquareApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "http://foursquare.com/oauth/authorize?oauth_token=%s";
+  
   @Override
   public String getAccessTokenEndpoint()
   {
@@ -13,4 +17,10 @@ public class FoursquareApi extends DefaultApi10a
   {
     return "http://foursquare.com/oauth/request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZATION_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/GoogleApi.java

@@ -4,6 +4,8 @@ import org.scribe.model.*;
 
 public class GoogleApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "https://www.google.com/accounts/OAuthAuthorizeToken?oauth_token=%s";
+  
   @Override
   public String getAccessTokenEndpoint()
   {
@@ -27,4 +29,10 @@ public class GoogleApi extends DefaultApi10a
   {
     return Verb.GET;
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZATION_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/LinkedInApi.java

@@ -2,6 +2,8 @@ package org.scribe.builder.api;
 
 public class LinkedInApi extends DefaultApi10a
 {
+  private static final String AUTHORIZE_URL = "https://api.linkedin.com/uas/oauth/authorize?oauth_token=%s";
+
   @Override
   protected String getAccessTokenEndpoint()
   {
@@ -13,4 +15,11 @@ public class LinkedInApi extends DefaultApi10a
   {
     return "https://api.linkedin.com/uas/oauth/requestToken";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZE_URL, requestToken.getToken());
+  }
+  
 }

src/main/java/org/scribe/builder/api/TwitterApi.java

@@ -1,7 +1,11 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class TwitterApi extends DefaultApi10a
 {
+  private static final String AUTHORIZE_URL = "https://api.twitter.com/oauth/authorize?oauth_token=%s";
+  
   @Override
   public String getAccessTokenEndpoint()
   {
@@ -13,4 +17,10 @@ public class TwitterApi extends DefaultApi10a
   {
     return "http://api.twitter.com/oauth/request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZE_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/VimeoApi.java

@@ -1,7 +1,11 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class VimeoApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "http://vimeo.com/oauth/authorize?oauth_token=%s";
+  
   @Override
   public String getAccessTokenEndpoint()
   {
@@ -13,4 +17,10 @@ public class VimeoApi extends DefaultApi10a
   {
     return "http://vimeo.com/oauth/request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZATION_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/YahooApi.java

@@ -1,7 +1,11 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class YahooApi extends DefaultApi10a
 {
+  private static final String AUTHORIZE_URL = "https://api.login.yahoo.com/oauth/v2/request_auth?oauth_token=%s";
+  
   @Override
   public String getAccessTokenEndpoint()
   {
@@ -13,4 +17,10 @@ public class YahooApi extends DefaultApi10a
   {
     return "https://api.login.yahoo.com/oauth/v2/get_request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZE_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/YammerApi.java

@@ -1,7 +1,10 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class YammerApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "'https://www.yammer.com/oauth/authorize?oauth_token=%s'";
 
 	@Override
 	public String getRequestTokenEndpoint()
@@ -14,5 +17,10 @@ public class YammerApi extends DefaultApi10a
   {
 		return "https://www.yammer.com/oauth/access_token";
 	}
-
+	
+	@Override
+	public String getAuthorizationUrl(Token requestToken)
+	{
+	  return String.format(AUTHORIZATION_URL, requestToken.getToken());
+	}
 }

src/main/java/org/scribe/oauth/OAuth10aServiceImpl.java

@@ -93,6 +93,14 @@ public class OAuth10aServiceImpl implements OAuthService
   {
     this.scope = scope;
   }
+
+  /**
+   * {@inheritDoc}
+   */
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return api.getAuthorizationUrl(requestToken);
+  }
   
   private String getSignature(OAuthRequest request, Token token)
   {

src/main/java/org/scribe/oauth/OAuth2ServiceImpl.java

@@ -37,4 +37,10 @@ public class OAuth2ServiceImpl implements OAuthService
     
   }
 
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return null;
+  }
+
 }

src/main/java/org/scribe/oauth/OAuthService.java

@@ -48,4 +48,13 @@ public interface OAuthService
    * @param scope OAuth Api scope (optional)
    */
   public void addScope(String scope);
+  
+  /**
+   * Returns the URL where you should redirect your users to authenticate
+   * your application.
+   * 
+   * @param requestToken the request token you need to authorize
+   * @return the URL where you should redirect your users
+   */
+  public String getAuthorizationUrl(Token requestToken);
 }

src/test/java/org/scribe/examples/FoursquareExample.java

@@ -9,7 +9,6 @@ import org.scribe.oauth.*;
 
 public class FoursquareExample
 {
-  private static final String AUTHORIZE_URL = "http://foursquare.com/oauth/authorize?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://api.foursquare.com/v1/user";
   
   public static void main(String[] args)
@@ -31,7 +30,7 @@ public class FoursquareExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());

src/test/java/org/scribe/examples/LinkedInExample.java

@@ -9,18 +9,17 @@ import org.scribe.oauth.*;
 
 public class LinkedInExample
 {
-  private static final String AUTHORIZE_URL = "https://api.linkedin.com/uas/oauth/authorize?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://api.linkedin.com/v1/people/~/connections:(id,last-name)";
   
   public static void main(String[] args)
   {
     OAuthService service = new ServiceBuilder()
-                                  .provider(LinkedInApi.class)
-                                  .apiKey("CiEgwWDkA5BFpNrc0RfGyVuSlOh4tig5kOTZ9q97qcXNrFl7zqk-Ts7DqRGaKDCV")
-                                  .apiSecret("dhho4dfoCmiQXrkw4yslork5XWLFnPSuMR-8gscPVjY4jqFFHPYWJKgpFl4uLTM6")
-                                  .build();
-    
+                                .provider(LinkedInApi.class)
+                                .apiKey("CiEgwWDkA5BFpNrc0RfGyVuSlOh4tig5kOTZ9q97qcXNrFl7zqk-Ts7DqRGaKDCV")
+                                .apiSecret("dhho4dfoCmiQXrkw4yslork5XWLFnPSuMR-8gscPVjY4jqFFHPYWJKgpFl4uLTM6")
+                                .build();
     Scanner in = new Scanner(System.in);
+    
     System.out.println("=== LinkedIn's OAuth Workflow ===");
     System.out.println();
 
@@ -31,7 +30,7 @@ public class LinkedInExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());

src/test/java/org/scribe/examples/TwitterExample.java

@@ -9,7 +9,6 @@ import org.scribe.oauth.*;
 
 public class TwitterExample
 {
-  private static final String AUTHORIZE_URL = "https://api.twitter.com/oauth/authorize?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://api.twitter.com/1/account/verify_credentials.xml";
   
   public static void main(String[] args)
@@ -31,7 +30,7 @@ public class TwitterExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());

src/test/java/org/scribe/examples/YahooExample.java

@@ -9,20 +9,18 @@ import org.scribe.oauth.*;
 
 public class YahooExample
 {
-  private static final String NETWORK_NAME = "Yahoo";
-  private static final String AUTHORIZE_URL = "https://api.login.yahoo.com/oauth/v2/request_auth?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://social.yahooapis.com/v1/user/A6ROU63MXWDCW3Y5MGCYWVHDJI/profile/status?format=json";
 
   public static void main(String[] args)
   {
     OAuthService service = new ServiceBuilder()
-                                  .provider(YahooApi.class)
-                                  .apiKey("dj0yJmk9TXZDWVpNVVdGaVFmJmQ9WVdrOWMweHZXbkZLTkhVbWNHbzlNVEl5TWprd05qUTJNZy0tJnM9Y29uc3VtZXJzZWNyZXQmeD0wMw--")
-                                  .apiSecret("262be559f92a2be20c4c039419018f2b48cdfce9")
-                                  .build();
+                                .provider(YahooApi.class)
+                                .apiKey("dj0yJmk9TXZDWVpNVVdGaVFmJmQ9WVdrOWMweHZXbkZLTkhVbWNHbzlNVEl5TWprd05qUTJNZy0tJnM9Y29uc3VtZXJzZWNyZXQmeD0wMw--")
+                                .apiSecret("262be559f92a2be20c4c039419018f2b48cdfce9")
+                                .build();
     Scanner in = new Scanner(System.in);
 
-    System.out.println("=== " + NETWORK_NAME + "'s OAuth Workflow ===");
+    System.out.println("=== Yahoo's OAuth Workflow ===");
     System.out.println();
 
     // Obtain the Request Token
@@ -32,7 +30,7 @@ public class YahooExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());