KEYCLOAK-211 Enable social only login

forms/common-themes/src/main/resources/theme/login/base/login.ftl

@@ -5,6 +5,7 @@
     <#elseif section = "header">
         ${rb.loginTitle} <strong>${(realm.name)!''}</strong>
     <#elseif section = "form">
+        <#if realm.password>
             <form id="kc-form-login" class="${properties.kcFormClass!}" action="${url.loginAction}" method="post">
                 <div class="${properties.kcFormGroupClass!}">
                     <div class="${properties.kcLabelWrapperClass!}">
@@ -50,14 +51,23 @@
                      </div>
                 </div>
             </form>
+        <#elseif realm.social>
+            <div id="kc-social-providers">
+                <ul>
+                    <#list social.providers as p>
+                        <li><a href="${p.loginUrl}" class="zocial ${p.id}"> <span class="text">${p.name}</span></a></li>
+                    </#list>
+                </ul>
+            </div>
+        </#if>
     <#elseif section = "info" >
-        <#if realm.registrationAllowed>
+        <#if realm.password && realm.registrationAllowed>
             <div id="kc-registration">
                 <span>${rb.noAccount} <a href="${url.registrationUrl}">${rb.register}</a></span>
             </div>
         </#if>
 
-        <#if social.providers??>
+        <#if realm.password && social.providers??>
             <div id="kc-social-providers">
                 <ul>
                     <#list social.providers as p>

forms/login-freemarker/src/main/java/org/keycloak/login/freemarker/model/RealmBean.java

@@ -22,6 +22,8 @@
 package org.keycloak.login.freemarker.model;
 
 import org.keycloak.models.RealmModel;
+import org.keycloak.models.RequiredCredentialModel;
+import org.keycloak.representations.idm.CredentialRepresentation;
 
 /**
  * @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
@@ -54,4 +56,13 @@ public class RealmBean {
         return realm.isRememberMe();
     }
 
+    public boolean isPassword() {
+        for (RequiredCredentialModel r : realm.getRequiredCredentials()) {
+            if (r.getType().equals(CredentialRepresentation.PASSWORD)) {
+                return true;
+            }
+        }
+        return false;
+    }
+    
 }