Introduce Completion API with search and history classes

The new API makes completion independent from the database and
uses pluggable, asynchronous backends. No new functionality.

1 files changed, 77 insertions, 0 deletions

diff --git a/midori/midori-searchcompletion.vala b/midori/midori-searchcompletion.vala
new file mode 100644
index 00000000..0a5c44ed
--- /dev/null
+++ b/midori/midori-searchcompletion.vala
@@ -0,0 +1,77 @@
+/*
+ Copyright (C) 2012 Christian Dywan <christian@twotoasts.de>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ See the file COPYING for the full license text.
+*/
+namespace Katze {
+    extern static unowned List<GLib.Object> array_peek_items (GLib.Object array);
+}
+
+namespace Midori {
+    extern static Gdk.Pixbuf? search_action_get_icon (GLib.Object item,
+        Gtk.Widget? widget, out string[] icon_name, bool in_entry);
+
+    public class SearchCompletion : Completion {
+        GLib.Object search_engines;
+
+        public SearchCompletion () {
+            GLib.Object (description: "Search engines");
+        }
+
+        public override void prepare (GLib.Object app) {
+            app.get ("search-engines", out search_engines);
+        }
+
+        public override bool can_complete (string text) {
+            return search_engines != null;
+        }
+
+        public override bool can_action (string action) {
+            return action == "about:search";
+        }
+
+        public override async List<Suggestion>? complete (string text, string? action, Cancellable cancellable) {
+            return_val_if_fail (search_engines != null, null);
+
+            unowned List<GLib.Object> items = Katze.array_peek_items (search_engines);
+            var suggestions = new List<Suggestion> ();
+            uint n = 0;
+            foreach (var item in items) {
+                string uri, title, desc;
+                item.get ("uri", out uri);
+                item.get ("name", out title);
+                item.get ("text", out desc);
+                string search_uri = URI.for_search (uri, text);
+                string search_title = _("Search with %s").printf (title);
+                var icon = Midori.search_action_get_icon (item, null, null, false);
+                string search_desc = search_title + "\n" + desc ?? uri;
+                /* FIXME: Theming? Win32? */
+                string background = "gray";
+                var suggestion = new Suggestion (search_uri, search_desc, false, background, icon);
+                suggestions.append (suggestion);
+
+                n++;
+                if (n == 3 && action == null) {
+                    suggestion = new Suggestion ("about:search", _("Search with…"), false, background);
+                    suggestion.action = true;
+                    suggestions.append (suggestion);
+                    break;
+                }
+
+                uint src = Idle.add (complete.callback);
+                yield;
+                Source.remove (src);
+            }
+
+            if (cancellable.is_cancelled ())
+                return null;
+
+            return suggestions;
+        }
+    }
+}