Simple canvas based "Aircraft Center".

- Needs FlightGear compiled with -DENABLE_PACKAGE_SYSTEM.
 - Shows only first 100 available aircrafts.
 - Now progress indication on install/remove (need to reopen
   dialog afterwards)

Nasal/canvas/gui.nas

@@ -7,6 +7,7 @@ var gui = {
 var gui_dir = getprop("/sim/fg-root") ~ "/Nasal/canvas/gui/";
 var loadGUIFile = func(file) io.load_nasal(gui_dir ~ file, "canvas");
 var loadWidget = func(name) loadGUIFile("widgets/" ~ name ~ ".nas");
+var loadDialog = func(name) loadGUIFile("dialogs/" ~ name ~ ".nas");
 
 loadGUIFile("Config.nas");
 loadGUIFile("Style.nas");

Nasal/canvas/gui/dialogs/AircraftCenter.nas

@@ -0,0 +1,98 @@
+var AircraftCenter = {
+  show: func
+  {
+    var dlg = canvas.Window.new([550,500], "dialog")
+                           .set("title", "Aircraft Center")
+                           .set("resize", 1);
+    dlg.getCanvas(1)
+       .set("background", canvas.style.getColor("bg_color"));
+    var root = dlg.getCanvas().createGroup();
+
+    var vbox = VBoxLayout.new();
+    dlg.setLayout(vbox);
+
+    vbox.addItem(
+      gui.widgets.Label.new(root, style, {})
+                       .setText("Install/remove aircrafts (Showing first 100)")
+    );
+
+    var scroll = gui.widgets.ScrollArea.new(root, style, {size: [96, 128]})
+                                       .move(20, 100);
+    vbox.addItem(scroll, 1);
+
+    var content = scroll.getContent()
+                        .set("font", "LiberationFonts/LiberationSans-Bold.ttf")
+                        .set("character-size", 16)
+                        .set("alignment", "left-center");
+
+    var list = VBoxLayout.new();
+    scroll.setLayout(list);
+
+    var num = 0;
+    foreach(var catalog; pkg.root.catalogs())
+    {
+      foreach(var package; catalog.packages())
+      {
+        var row = HBoxLayout.new();
+        list.addItem(row);
+
+        var img = "path-for-missing-thumb...";
+        var thumbs = package.thumbnails;
+        if( size(thumbs) > 0 )
+          img = thumbs[0];
+        var image_label = gui.widgets.Label.new(content, style, {})
+                                           .setImage(img);
+        image_label.setFixedSize(171, 128);
+        row.addItem(image_label);
+
+        var detail_box = VBoxLayout.new();
+        detail_box.setSpacing(0);
+        row.addItem(detail_box);
+        
+        var title_box = HBoxLayout.new();
+        detail_box.addItem(title_box);
+        
+        title_box.addItem(
+          gui.widgets.Label.new(content, style, {})
+                           .setText(package.name)
+        );
+        title_box.addStretch(1);
+        (func {
+          var p = package;
+          var b = gui.widgets.Button.new(content, style, {});
+          if( p.installed )
+            b.setText("Remove")
+             .listen("clicked", func
+             {
+               p.install().uninstall();
+               b.setText("Removing...");
+             });
+           else
+            b.setText("Install")
+             .listen("clicked", func
+             {
+               p.install();
+               b.setText("Installing...");
+             });
+          title_box.addItem(b);
+        })();
+
+        foreach(var cat; ["FDM", "systems", "cockpit", "model"])
+        {
+          detail_box.addItem(
+            gui.widgets.Label.new(content, style, {})
+                             .setText(cat ~ ": " ~ package.lprop("rating/" ~ cat))
+          );
+        }
+
+        row.addSpacing(5);
+
+        num += 1;
+        if( num >= 100 )
+          break;
+      }
+    }
+  }
+};
+
+AircraftCenter.show();

Translations/en/menu.xml

@@ -13,6 +13,8 @@
 	<snap-shot-dir>Screenshot Directory</snap-shot-dir>
 	<sound-config>Sound Configuration</sound-config>
 	<input-config>Input Configuration</input-config>
+	<terrasync>Scenery Download</terrasync>
+	<aircraft-center>Aircraft Center (Experimental)</aircraft-center>
 	<exit>Quit</exit>
 
 	<!-- View menu -->
@@ -48,7 +50,6 @@
 	<environment-settings>Environment Settings</environment-settings>
 	<time-settings>Time Settings</time-settings>
 	<wildfire-settings>Wildfire Settings</wildfire-settings>
-	<terrasync>Scenery Download</terrasync>
 
 	<!-- Equipment menu -->
 	<equipment>Equipment</equipment>

gui/menubar.xml

@@ -75,6 +75,16 @@
 			</binding>
 		</item>
 
+		<item>
+			<name>aircraft-center</name>
+			<binding>
+				<command>nasal</command>
+				<script>
+				  canvas.loadDialog("AircraftCenter");
+				</script>
+			</binding>
+		</item>
+
 		<item>
 			<name>exit</name>
 			<key>Esc</key>