[core] Added support for updating notes.

Regards #106

qml/ttrss/models/FeedItemModel.qml

@@ -246,6 +246,20 @@ ListModel {
         })
     }
 
+    function updateNote(note, callback) {
+        var ttrss = rootWindow.getTTRSS()
+        var index = root.selectedIndex
+        var item = getSelectedItem()
+
+        ttrss.updateFeedNote(item.id, note, function(successful, errorMessage) {
+            if (successful) {
+                root.setProperty(index, "note", note)
+            }
+
+            callback(successful, errorMessage)
+        })
+    }
+
     function getLabels(callback) {
         var ttrss = rootWindow.getTTRSS()
         var item = getSelectedItem()

qml/ttrss/models/tinytinyrss.js

@@ -913,6 +913,59 @@ function process_updateFeedUnread(callback, httpreq) {
     }
 }
 
+/**
+ * Update articles' notes.
+ * @param {int} The ids of the articles.
+ * @param {string} The note.
+ * @param {function} A callback function with parameters boolean (indicating
+ *     success) and string (an optional error message).
+ */
+function updateFeedNote(articleIds, note, callback) {
+    if(responsesPending['feeditemnote']) {
+        return;
+    }
+
+    // needs to be logged in
+    if(!state['token']) {
+        requestsPending['feeditemnote'] = true;
+        processPendingRequests(callback);
+        return;
+    }
+
+    responsesPending['feeditemnote'] = true;
+
+    var params = {
+        'op': 'updateArticle',
+        'sid': state['token'],
+        'article_ids': articleIds,
+        'field': 3,
+        'data': note
+    }
+
+    networkCall(params, function(http) { process_updateFeedNote(callback, http) });
+}
+
+/** @private */
+function process_updateFeedNote(callback, httpreq) {
+    var response = process_readyState(httpreq);
+
+    responsesPending['feeditemnote'] = false;
+
+    if (!response.successful) {
+        trace(1, "Update feeditem note: " + response.errorMessage);
+        if (callback) {
+            callback(false, response.errorMessage);
+        }
+        return;
+    }
+
+    if(!processPendingRequests(callback) && callback) {
+        // This action is complete (as there's no other requests to do)
+        // Fire callback saying all ok
+        callback(true);
+    }
+}
+
 /**
  * Get the list of configured labels.
  * @param {int} The id of an arbitrary article.