js: add Key lookup

--

* src/Keyring.js: getKeys() now has the option "search", which will
  trigger a remote lookup (as configured in gpg) for the string given
  as pattern.
* src/permittedOperations: make use of the new 'locate' option in
  keylist
* DemoExtension: Add a button for lookup, to demonstrate the
  functionality

2 files changed, 24 insertions, 3 deletions

diff --git a/lang/js/DemoExtension/maindemo.js b/lang/js/DemoExtension/maindemo.js
index d0127c73..4cae934e 100644
--- a/lang/js/DemoExtension/maindemo.js
+++ b/lang/js/DemoExtension/maindemo.js
@@ -98,5 +98,22 @@ document.addEventListener('DOMContentLoaded', function() {
                         alert( errormsg.message);
                     });
             });
+        document.getElementById('searchkey').addEventListener('click',
+            function(){
+                let data = document.getElementById('inputtext').value;
+                gpgmejs.Keyring.getKeys(data, true, true).then(function(keys){
+                    if (keys.length === 1){
+                        document.getElementById(
+                            'pubkey').value = keys[0].fingerprint;
+                    } else if (keys.length > 1) {
+                        alert('The pattern was not unambigious enough for a Key. '
+                        + keys.length + ' Keys were found');
+                    } else {
+                        alert('No keys found');
+                    }
+                }, function(errormsg){
+                    alert( errormsg.message);
+                });
+            });
     });
 });
diff --git a/lang/js/DemoExtension/mainui.html b/lang/js/DemoExtension/mainui.html
index b6390363..c773c9b9 100644
--- a/lang/js/DemoExtension/mainui.html
+++ b/lang/js/DemoExtension/mainui.html
@@ -17,9 +17,13 @@
                 </li>
                 <li>
                     <span class="label">Fingerprint of Key to use: </span>
-                </li>
-                    <input type="text" id="pubkey" value="" /> <br>
-                    <button id="getdefaultkey">Set to default signing key</button>
+                    <input type="text" id="pubkey" value="" />
+                        <button id="getdefaultkey">
+                            Set to default signing key
+                        </button>&nbsp;
+                        <button id="searchkey">
+                            Look up Key
+                        </button>
                 </li>
             </ul>
         </div>