diff --git a/cmake/UseVala.cmake b/cmake/UseVala.cmake
index 820b6d82..436a03ce 100644
--- a/cmake/UseVala.cmake
+++ b/cmake/UseVala.cmake
@@ -118,7 +118,12 @@ function(vala_precompile output)
     cmake_parse_arguments(ARGS "FAST_VAPI" "DIRECTORY;GENERATE_HEADER;GENERATE_VAPI;EXPORTS_DIR"
         "SOURCES;PACKAGES;OPTIONS;DEFINITIONS;CUSTOM_VAPIS;CUSTOM_DEPS;GRESOURCES" ${ARGN})
 
-    if("Ninja" STREQUAL ${CMAKE_GENERATOR} AND NOT DISABLE_FAST_VAPI)
+    # Header and internal header is needed to generate internal vapi
+    if (ARGS_GENERATE_VAPI AND NOT ARGS_GENERATE_HEADER)
+        set(ARGS_GENERATE_HEADER ${ARGS_GENERATE_VAPI})
+    endif(ARGS_GENERATE_VAPI AND NOT ARGS_GENERATE_HEADER)
+
+    if("Ninja" STREQUAL ${CMAKE_GENERATOR} AND NOT DISABLE_FAST_VAPI AND NOT ARGS_GENERATE_HEADER)
         set(ARGS_FAST_VAPI true)
     endif()
 
@@ -173,11 +178,6 @@ function(vala_precompile output)
         list(APPEND out_extra_files "${ARGS_EXPORTS_DIR}/${ARGS_GENERATE_VAPI}_internal.vapi")
         set(vapi_arguments "--vapi=${ARGS_EXPORTS_DIR}/${ARGS_GENERATE_VAPI}.vapi" "--internal-vapi=${ARGS_EXPORTS_DIR}/${ARGS_GENERATE_VAPI}_internal.vapi")
 
-        # Header and internal header is needed to generate internal vapi
-        if (NOT ARGS_GENERATE_HEADER)
-            set(ARGS_GENERATE_HEADER ${ARGS_GENERATE_VAPI})
-        endif(NOT ARGS_GENERATE_HEADER)
-
         if(ARGS_PACKAGES)
             string(REPLACE ";" "\\n" pkgs "${ARGS_PACKAGES};${ARGS_CUSTOM_DEPS}")
             add_custom_command(OUTPUT "${ARGS_EXPORTS_DIR}/${ARGS_GENERATE_VAPI}.deps" COMMAND echo -e "\"${pkgs}\"" > "${ARGS_EXPORTS_DIR}/${ARGS_GENERATE_VAPI}.deps" COMMENT "Generating ${ARGS_GENERATE_VAPI}.deps")
diff --git a/libdino/CMakeLists.txt b/libdino/CMakeLists.txt
index c60075a3..aa2ab253 100644
--- a/libdino/CMakeLists.txt
+++ b/libdino/CMakeLists.txt
@@ -1,9 +1,9 @@
 find_packages(LIBDINO_PACKAGES REQUIRED
+    GDKPixbuf2
     Gee
     GLib
     GModule
     GObject
-    GTK3
 )
 
 vala_precompile(LIBDINO_VALA_C
diff --git a/libdino/src/application.vala b/libdino/src/application.vala
index c8834288..72dbfeae 100644
--- a/libdino/src/application.vala
+++ b/libdino/src/application.vala
@@ -1,13 +1,11 @@
-using Gtk;
-
 using Dino.Entities;
 
-public class Dino.Application : Gtk.Application {
+public interface Dino.Application : GLib.Application {
 
-    public Database db;
-    public StreamInteractor stream_interaction;
-    public Plugins.Registry plugin_registry = new Plugins.Registry();
-    public SearchPathGenerator? search_path_generator { get; set; }
+    public abstract Database db { get; set; }
+    public abstract StreamInteractor stream_interaction { get; set; }
+    public abstract Plugins.Registry plugin_registry { get; set; }
+    public abstract SearchPathGenerator? search_path_generator { get; set; }
 
     static string print_xmpp;
 
@@ -16,7 +14,7 @@ public class Dino.Application : Gtk.Application {
         { null }
     };
 
-    public Application() throws Error {
+    public void init() throws Error {
         if (DirUtils.create_with_parents(get_storage_dir(), 0700) == -1) {
             throw new Error(-1, 0, "Could not create storage dir \"%s\": %s", get_storage_dir(), FileUtils.error_from_errno(errno).to_string());
         }
diff --git a/libdino/src/plugin/interfaces.vala b/libdino/src/plugin/interfaces.vala
index dbed6a00..729f7b26 100644
--- a/libdino/src/plugin/interfaces.vala
+++ b/libdino/src/plugin/interfaces.vala
@@ -1,5 +1,3 @@
-using Gtk;
-
 using Dino.Entities;
 
 namespace Dino.Plugins {
@@ -12,6 +10,10 @@ public enum Priority {
     HIGHEST
 }
 
+public enum WidgetType {
+    GTK
+}
+
 public interface RootInterface : Object {
     public abstract void registered(Dino.Application app);
 
@@ -31,10 +33,10 @@ public abstract class AccountSettingsEntry : Object {
     public abstract string name { get; }
     public virtual int16 label_top_padding { get { return -1; } }
 
-    public abstract AccountSettingsWidget get_widget();
+    public abstract AccountSettingsWidget? get_widget(WidgetType type);
 }
 
-public interface AccountSettingsWidget : Gtk.Widget {
+public interface AccountSettingsWidget : Object {
     public abstract void set_account(Account account);
 
     public abstract signal void activated();
@@ -42,24 +44,30 @@ public interface AccountSettingsWidget : Gtk.Widget {
     public abstract void deactivate();
 }
 
-public abstract class ContactDetailsProvider : Object {
+public interface ContactDetailsProvider : Object {
     public abstract string id { get; }
 
-    public abstract void populate(Conversation conversation, ContactDetails contact_details);
+    public abstract void populate(Conversation conversation, ContactDetails contact_details, WidgetType type);
 }
 
 public class ContactDetails : Object {
     public signal void save();
-    public signal void add(string category, string label, string? desc, Widget widget);
+    public signal void add(string category, string label, string? desc, Object widget);
 }
 
-public abstract class ConversationTitlebarEntry : Object {
+public interface TextCommand : Object {
+    public abstract string cmd { get; }
+
+    public abstract string? handle_command(string? text, Entities.Conversation? conversation);
+}
+
+public interface ConversationTitlebarEntry : Object {
     public abstract string id { get; }
     public abstract double order { get; }
-    public abstract ConversationTitlebarWidget get_widget();
+    public abstract ConversationTitlebarWidget get_widget(WidgetType type);
 }
 
-public interface ConversationTitlebarWidget : Gtk.Widget {
+public interface ConversationTitlebarWidget : Object {
     public abstract void set_conversation(Conversation conversation);
 }
 
diff --git a/libdino/src/service/avatar_manager.vala b/libdino/src/service/avatar_manager.vala
index 42a08168..61e1faef 100644
--- a/libdino/src/service/avatar_manager.vala
+++ b/libdino/src/service/avatar_manager.vala
@@ -31,7 +31,7 @@ public class AvatarManager : StreamInteractionModule, Object {
     }
 
     public static string get_storage_dir() {
-        return Path.build_filename(Application.get_storage_dir(), "avatars");
+        return Path.build_filename(Dino.get_storage_dir(), "avatars");
     }
 
     private AvatarManager(StreamInteractor stream_interactor, Database db) {
diff --git a/libdino/src/util.vala b/libdino/src/util.vala
index 03d6ee26..85047dd8 100644
--- a/libdino/src/util.vala
+++ b/libdino/src/util.vala
@@ -20,6 +20,10 @@ public class SearchPathGenerator {
     }
 }
 
+public static string get_storage_dir() {
+    return Path.build_filename(Environment.get_user_data_dir(), "dino");
+}
+
 [CCode (cname = "dino_gettext", cheader_filename = "dino_i18n.h")]
 public static extern unowned string _(string s);
 
diff --git a/main/src/ui/application.vala b/main/src/ui/application.vala
index 72bd4d0d..75b82352 100644
--- a/main/src/ui/application.vala
+++ b/main/src/ui/application.vala
@@ -3,11 +3,17 @@ using Gtk;
 using Dino.Entities;
 using Dino.Ui;
 
-public class Dino.Ui.Application : Dino.Application {
+public class Dino.Ui.Application : Gtk.Application, Dino.Application {
     private Notifications notifications;
     private UnifiedWindow window;
 
+    public Database db { get; set; }
+    public StreamInteractor stream_interaction { get; set; }
+    public Plugins.Registry plugin_registry { get; set; default = new Plugins.Registry(); }
+    public SearchPathGenerator? search_path_generator { get; set; }
+
     public Application() throws Error {
+        init();
         Notify.init("dino");
         Environment.set_application_name("Dino");
         Gtk.Window.set_default_icon_name("dino");
diff --git a/main/src/ui/contact_details/dialog.vala b/main/src/ui/contact_details/dialog.vala
index a5b8ea38..4e61a3f5 100644
--- a/main/src/ui/contact_details/dialog.vala
+++ b/main/src/ui/contact_details/dialog.vala
@@ -45,7 +45,7 @@ public class Dialog : Gtk.Dialog {
         app.plugin_registry.register_contact_details_entry(new MucConfigFormProvider(stream_interactor));
 
         foreach (Plugins.ContactDetailsProvider provider in app.plugin_registry.contact_details_entries) {
-            provider.populate(conversation, contact_details);
+            provider.populate(conversation, contact_details, Plugins.WidgetType.GTK);
         }
 
         destroy.connect(() => {
@@ -72,7 +72,9 @@ public class Dialog : Gtk.Dialog {
         Util.image_set_from_scaled_pixbuf(avatar, (new AvatarGenerator(50, 50, avatar.scale_factor)).draw_conversation(stream_interactor, conversation));
     }
 
-    private void add_entry(string category, string label, string? description, Widget w) {
+    private void add_entry(string category, string label, string? description, Object wo) {
+        if (!(wo is Widget)) return;
+        Widget w = (Widget) wo;
         add_category(category);
 
         ListBoxRow list_row = new ListBoxRow() { activatable=false, visible=true };
diff --git a/main/src/ui/contact_details/muc_config_form_provider.vala b/main/src/ui/contact_details/muc_config_form_provider.vala
index 438f41c4..47bbbe28 100644
--- a/main/src/ui/contact_details/muc_config_form_provider.vala
+++ b/main/src/ui/contact_details/muc_config_form_provider.vala
@@ -6,15 +6,16 @@ using Xmpp.Xep;
 
 namespace Dino.Ui.ContactDetails {
 
-public class MucConfigFormProvider : Plugins.ContactDetailsProvider {
-    public override string id { get { return "muc_config_form"; } }
+public class MucConfigFormProvider : Plugins.ContactDetailsProvider, Object {
+    public string id { get { return "muc_config_form"; } }
     private StreamInteractor stream_interactor;
 
     public MucConfigFormProvider(StreamInteractor stream_interactor) {
         this.stream_interactor = stream_interactor;
     }
 
-    public override void populate(Conversation conversation, Plugins.ContactDetails contact_details) {
+    public void populate(Conversation conversation, Plugins.ContactDetails contact_details, Plugins.WidgetType type) {
+        if (type != Plugins.WidgetType.GTK) return;
         if (conversation.type_ == Conversation.Type.GROUPCHAT) {
             Xmpp.Core.XmppStream? stream = stream_interactor.get_stream(conversation.account);
             if (stream == null) return;
diff --git a/main/src/ui/contact_details/settings_provider.vala b/main/src/ui/contact_details/settings_provider.vala
index 70eab72c..64d4598c 100644
--- a/main/src/ui/contact_details/settings_provider.vala
+++ b/main/src/ui/contact_details/settings_provider.vala
@@ -4,8 +4,8 @@ using Dino.Entities;
 
 namespace Dino.Ui.ContactDetails {
 
-public class SettingsProvider : Plugins.ContactDetailsProvider {
-    public override string id { get { return "chat_settings"; } }
+public class SettingsProvider : Plugins.ContactDetailsProvider, Object {
+    public string id { get { return "chat_settings"; } }
 
     private StreamInteractor stream_interactor;
 
@@ -13,7 +13,8 @@ public class SettingsProvider : Plugins.ContactDetailsProvider {
         this.stream_interactor = stream_interactor;
     }
 
-    public override void populate(Conversation conversation, Plugins.ContactDetails contact_details) {
+    public void populate(Conversation conversation, Plugins.ContactDetails contact_details, Plugins.WidgetType type) {
+        if (type != Plugins.WidgetType.GTK) return;
         if (conversation.type_ == Conversation.Type.CHAT) {
             ComboBoxText[] comboboxes = new ComboBoxText[2];
             for (int i = 0; i < 3; i++) {
diff --git a/main/src/ui/conversation_titlebar/encryption_entry.vala b/main/src/ui/conversation_titlebar/encryption_entry.vala
index 18c09773..12b73409 100644
--- a/main/src/ui/conversation_titlebar/encryption_entry.vala
+++ b/main/src/ui/conversation_titlebar/encryption_entry.vala
@@ -5,12 +5,15 @@ using Dino.Entities;
 
 namespace Dino.Ui {
 
-class EncryptionEntry : Plugins.ConversationTitlebarEntry {
-    public override string id { get { return "encryption"; } }
+class EncryptionEntry : Plugins.ConversationTitlebarEntry, Object {
+    public string id { get { return "encryption"; } }
 
-    public override double order { get { return 2; } }
-    public override Plugins.ConversationTitlebarWidget get_widget() {
-        return new EncryptionWidget() { visible=true };
+    public double order { get { return 2; } }
+    public Plugins.ConversationTitlebarWidget get_widget(Plugins.WidgetType type) {
+        if (type == Plugins.WidgetType.GTK) {
+            return new EncryptionWidget() { visible=true };
+        }
+        return null;
     }
 }
 
diff --git a/main/src/ui/conversation_titlebar/menu_entry.vala b/main/src/ui/conversation_titlebar/menu_entry.vala
index 6cead69d..6cdd11c2 100644
--- a/main/src/ui/conversation_titlebar/menu_entry.vala
+++ b/main/src/ui/conversation_titlebar/menu_entry.vala
@@ -4,8 +4,8 @@ using Dino.Entities;
 
 namespace Dino.Ui {
 
-class MenuEntry : Plugins.ConversationTitlebarEntry {
-    public override string id { get { return "menu"; } }
+class MenuEntry : Plugins.ConversationTitlebarEntry, Object {
+    public string id { get { return "menu"; } }
 
     StreamInteractor stream_interactor;
 
@@ -13,9 +13,12 @@ class MenuEntry : Plugins.ConversationTitlebarEntry {
         this.stream_interactor = stream_interactor;
     }
 
-    public override double order { get { return 0; } }
-    public override Plugins.ConversationTitlebarWidget get_widget() {
-        return new MenuWidget(stream_interactor) { visible=true };
+    public double order { get { return 0; } }
+    public Plugins.ConversationTitlebarWidget get_widget(Plugins.WidgetType type) {
+        if (type == Plugins.WidgetType.GTK) {
+            return new MenuWidget(stream_interactor) { visible=true };
+        }
+        return null;
     }
 }
 
diff --git a/main/src/ui/conversation_titlebar/occupants_entry.vala b/main/src/ui/conversation_titlebar/occupants_entry.vala
index c305bed7..904a832a 100644
--- a/main/src/ui/conversation_titlebar/occupants_entry.vala
+++ b/main/src/ui/conversation_titlebar/occupants_entry.vala
@@ -4,8 +4,8 @@ using Dino.Entities;
 
 namespace Dino.Ui {
 
-class OccupantsEntry : Plugins.ConversationTitlebarEntry {
-    public override string id { get { return "occupants"; } }
+class OccupantsEntry : Plugins.ConversationTitlebarEntry, Object {
+    public string id { get { return "occupants"; } }
 
     StreamInteractor stream_interactor;
     Window window;
@@ -15,9 +15,12 @@ class OccupantsEntry : Plugins.ConversationTitlebarEntry {
         this.window = window;
     }
 
-    public override double order { get { return 3; } }
-    public override Plugins.ConversationTitlebarWidget get_widget() {
-        return new OccupantsWidget(stream_interactor, window) { visible=true };
+    public double order { get { return 3; } }
+    public Plugins.ConversationTitlebarWidget get_widget(Plugins.WidgetType type) {
+        if (type == Plugins.WidgetType.GTK) {
+            return new OccupantsWidget(stream_interactor, window) { visible=true };
+        }
+        return null;
     }
 }
 
diff --git a/main/src/ui/conversation_titlebar/view.vala b/main/src/ui/conversation_titlebar/view.vala
index 7debddd6..34191995 100644
--- a/main/src/ui/conversation_titlebar/view.vala
+++ b/main/src/ui/conversation_titlebar/view.vala
@@ -25,9 +25,11 @@ public class ConversationTitlebar : Gtk.HeaderBar {
         app.plugin_registry.register_contact_titlebar_entry(new OccupantsEntry(stream_interactor, window));
 
         foreach(var e in app.plugin_registry.conversation_titlebar_entries) {
-            Plugins.ConversationTitlebarWidget widget = e.get_widget();
-            widgets.add(widget);
-            pack_end(widget);
+            Plugins.ConversationTitlebarWidget widget = e.get_widget(Plugins.WidgetType.GTK);
+            if (widget != null) {
+                widgets.add(widget);
+                pack_end((Gtk.Widget)widget);
+            }
         }
 
         stream_interactor.get_module(MucManager.IDENTITY).subject_set.connect((account, jid, subject) => {
diff --git a/main/src/ui/manage_accounts/dialog.vala b/main/src/ui/manage_accounts/dialog.vala
index 548cb713..dae2fa73 100644
--- a/main/src/ui/manage_accounts/dialog.vala
+++ b/main/src/ui/manage_accounts/dialog.vala
@@ -56,16 +56,22 @@ public class Dialog : Gtk.Dialog {
         int16 default_top_padding = new Gtk.Button().get_style_context().get_padding(Gtk.StateFlags.NORMAL).top + 1;
         Application app = GLib.Application.get_default() as Application;
         foreach (var e in app.plugin_registry.account_settings_entries) {
-            Plugins.AccountSettingsWidget widget = e.get_widget();
+            Plugins.AccountSettingsWidget widget = e.get_widget(Plugins.WidgetType.GTK);
             plugin_widgets.add(widget);
-            widget.visible = true;
 
             Label label = new Label(e.name) { xalign=1, yalign=0, visible=true };
             label.get_style_context().add_class("dim-label");
             label.set_padding(0, e.label_top_padding == -1 ? default_top_padding : e.label_top_padding);
 
             settings_list.attach(label, 0, row_index);
-            settings_list.attach(widget, 1, row_index, 2);
+            if (widget is Widget) {
+                Widget gtkw = (Widget) widget;
+                plugin_widgets.add(widget);
+                gtkw.visible = true;
+                settings_list.attach(gtkw, 1, row_index, 2);
+            } else {
+                // TODO
+            }
             row_index++;
         }
     }
diff --git a/plugins/http-files/src/contact_titlebar_entry.vala b/plugins/http-files/src/contact_titlebar_entry.vala
index 74966c0e..064adca9 100644
--- a/plugins/http-files/src/contact_titlebar_entry.vala
+++ b/plugins/http-files/src/contact_titlebar_entry.vala
@@ -4,8 +4,8 @@ using Dino.Entities;
 
 namespace Dino.Plugins.HttpFiles {
 
-public class ConversationsTitlebarEntry : Plugins.ConversationTitlebarEntry {
-    public override string id { get { return "send_files"; } }
+public class ConversationsTitlebarEntry : Plugins.ConversationTitlebarEntry, Object {
+    public string id { get { return "send_files"; } }
 
     StreamInteractor stream_interactor;
 
@@ -13,9 +13,12 @@ public class ConversationsTitlebarEntry : Plugins.ConversationTitlebarEntry {
         this.stream_interactor = stream_interactor;
     }
 
-    public override double order { get { return 4; } }
-    public override Plugins.ConversationTitlebarWidget get_widget() {
-        return new ConversationTitlebarWidget(stream_interactor) { visible=true };
+    public double order { get { return 4; } }
+    public Plugins.ConversationTitlebarWidget get_widget(WidgetType type) {
+        if (type == WidgetType.GTK) {
+            return new ConversationTitlebarWidget(stream_interactor) { visible=true };
+        }
+        return null;
     }
 }
 
diff --git a/plugins/omemo/src/account_settings_entry.vala b/plugins/omemo/src/account_settings_entry.vala
index c6871f6e..3866febe 100644
--- a/plugins/omemo/src/account_settings_entry.vala
+++ b/plugins/omemo/src/account_settings_entry.vala
@@ -15,8 +15,11 @@ public class AccountSettingsEntry : Plugins.AccountSettingsEntry {
         return "OMEMO";
     }}
 
-    public override Plugins.AccountSettingsWidget get_widget() {
-        return new AccountSettingWidget(plugin);
+    public override Plugins.AccountSettingsWidget? get_widget(WidgetType type) {
+        if (type == WidgetType.GTK) {
+            return new AccountSettingWidget(plugin);
+        }
+        return null;
     }
 }
 
diff --git a/plugins/openpgp/src/account_settings_entry.vala b/plugins/openpgp/src/account_settings_entry.vala
index c7d11d72..75220c30 100644
--- a/plugins/openpgp/src/account_settings_entry.vala
+++ b/plugins/openpgp/src/account_settings_entry.vala
@@ -16,8 +16,11 @@ public class AccountSettingsEntry : Plugins.AccountSettingsEntry {
         return "OpenPGP";
     }}
 
-    public override Plugins.AccountSettingsWidget get_widget() {
-        return new AccountSettingsWidget(plugin);
+    public override Plugins.AccountSettingsWidget? get_widget(WidgetType type) {
+        if (type == WidgetType.GTK) {
+            return new AccountSettingsWidget(plugin);
+        }
+        return null;
     }
 }
 
diff --git a/plugins/openpgp/src/contact_details_provider.vala b/plugins/openpgp/src/contact_details_provider.vala
index 39b6de2c..b9cc4b42 100644
--- a/plugins/openpgp/src/contact_details_provider.vala
+++ b/plugins/openpgp/src/contact_details_provider.vala
@@ -4,8 +4,8 @@ using Dino.Entities;
 
 namespace Dino.Plugins.OpenPgp {
 
-public class ContactDetailsProvider : Plugins.ContactDetailsProvider {
-    public override string id { get { return "pgp_info"; } }
+public class ContactDetailsProvider : Plugins.ContactDetailsProvider, Object {
+    public string id { get { return "pgp_info"; } }
 
     private StreamInteractor stream_interactor;
 
@@ -13,8 +13,8 @@ public class ContactDetailsProvider : Plugins.ContactDetailsProvider {
         this.stream_interactor = stream_interactor;
     }
 
-    public override void populate(Conversation conversation, Plugins.ContactDetails contact_details) {
-        if (conversation.type_ == Conversation.Type.CHAT) {
+    public void populate(Conversation conversation, Plugins.ContactDetails contact_details, WidgetType type) {
+        if (conversation.type_ == Conversation.Type.CHAT && type == WidgetType.GTK) {
             string? key_id = stream_interactor.get_module(Manager.IDENTITY).get_key_id(conversation.account, conversation.counterpart);
             if (key_id != null) {
                 Gee.List<GPG.Key> keys = GPGHelper.get_keylist(key_id);