Add support for gpodder.net directory search

common/GPodderDirectorySearchModel.qml

@@ -0,0 +1,49 @@
+
+/**
+ *
+ * gPodder QML UI Reference Implementation
+ * Copyright (c) 2013, 2014, Thomas Perl <m@thp.io>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+import QtQuick 2.0
+
+ListModel {
+    id: directorySearchModel
+
+    function search(query, callback) {
+        clear();
+
+        var result = new XMLHttpRequest();
+        result.onreadystatechange = function() {
+            if (result.readyState == XMLHttpRequest.DONE) {
+                var data = JSON.parse(result.responseText);
+                data.sort(function (a, b) {
+                    // Sort by subscriber count, descending
+                    return b.subscribers - a.subscribers;
+                });
+                for (var i=0; i<data.length; i++) {
+                    directorySearchModel.append(data[i]);
+                }
+                if (callback !== undefined) {
+                    callback();
+                }
+            }
+        };
+
+        result.open('GET', 'http://gpodder.net/search.json?q=' + query);
+        result.send();
+    }
+}