Remove unnecessary _have_transaction flag in TrimDrag. Fix undo when a trim of one...
[ardour.git] / gtk2_ardour / plugin_ui.cc
index f398c23d7c9cf0d81fe36d446e83d5e37c6f10e6..9be3d50841be6f13296cc6c8ee2fa0358e7da35e 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000 Paul Davis 
+    Copyright (C) 2000 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
 
 */
 
+#ifdef WAF_BUILD
+#include "gtk2ardour-config.h"
+#endif
+
 #include <climits>
 #include <cerrno>
 #include <cmath>
 #include <gtkmm2ext/utils.h>
 #include <gtkmm2ext/doi.h>
 #include <gtkmm2ext/slider_controller.h>
+#include <gtkmm2ext/application.h>
 
 #include "midi++/manager.h"
 
+#include "ardour/session.h"
 #include "ardour/plugin.h"
 #include "ardour/plugin_insert.h"
 #include "ardour/ladspa_plugin.h"
 #ifdef VST_SUPPORT
 #include "ardour/vst_plugin.h"
+#include "vst_pluginui.h"
 #endif
 #ifdef HAVE_SLV2
 #include "ardour/lv2_plugin.h"
@@ -60,6 +67,7 @@
 #include "keyboard.h"
 #include "latency_gui.h"
 #include "plugin_eq_gui.h"
+#include "new_plugin_preset_dialog.h"
 
 #include "i18n.h"
 
@@ -68,14 +76,13 @@ using namespace ARDOUR;
 using namespace PBD;
 using namespace Gtkmm2ext;
 using namespace Gtk;
-using namespace sigc;
 
 PluginUIWindow::PluginUIWindow (Gtk::Window* win, boost::shared_ptr<PluginInsert> insert, bool scrollable)
        : parent (win)
+        , was_visible (false)
+        , _keyboard_focused (false)
 {
        bool have_gui = false;
-       non_gtk_gui = false;
-       was_visible = false;
 
        Label* label = manage (new Label());
        label->set_markup ("<b>THIS IS THE PLUGIN UI</b>");
@@ -89,7 +96,7 @@ PluginUIWindow::PluginUIWindow (Gtk::Window* win, boost::shared_ptr<PluginInsert
                case ARDOUR::AudioUnit:
                        have_gui = create_audiounit_editor (insert);
                        break;
-                       
+
                case ARDOUR::LADSPA:
                        error << _("Eh? LADSPA plugins don't have editors!") << endmsg;
                        break;
@@ -109,37 +116,38 @@ PluginUIWindow::PluginUIWindow (Gtk::Window* win, boost::shared_ptr<PluginInsert
                        throw failed_constructor ();
                }
 
-       } 
+       }
 
        if (!have_gui) {
 
                GenericPluginUI*  pu  = new GenericPluginUI (insert, scrollable);
-               
+
                _pluginui = pu;
-               add( *pu );
+               _pluginui->KeyboardFocused.connect (sigc::mem_fun (*this, &PluginUIWindow::keyboard_focused));
+               add (*pu);
 
                /*
                Gtk::HBox *hbox = new Gtk::HBox();
                hbox->pack_start( *pu);
                // TODO: this should be nicer
                hbox->pack_start( eqgui_bin );
-               
+
                add (*manage(hbox));
                */
 
-               set_wmclass (X_("ardour_plugin_editor"), "Ardour");
+               set_wmclass (X_("ardour_plugin_editor"), PROGRAM_NAME);
 
-               signal_map_event().connect (mem_fun (*pu, &GenericPluginUI::start_updating));
-               signal_unmap_event().connect (mem_fun (*pu, &GenericPluginUI::stop_updating));
+               signal_map_event().connect (sigc::mem_fun (*pu, &GenericPluginUI::start_updating));
+               signal_unmap_event().connect (sigc::mem_fun (*pu, &GenericPluginUI::stop_updating));
        }
 
        // set_position (Gtk::WIN_POS_MOUSE);
        set_name ("PluginEditor");
        add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK|Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 
-       signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window*> (this)), false);
-       death_connection = insert->GoingAway.connect (mem_fun(*this, &PluginUIWindow::plugin_going_away));
-       
+       signal_delete_event().connect (sigc::bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window*> (this)), false);
+       insert->DropReferences.connect (death_connection, invalidator (*this), boost::bind (&PluginUIWindow::plugin_going_away, this), gui_context());
+
        gint h = _pluginui->get_preferred_height ();
        gint w = _pluginui->get_preferred_width ();
 
@@ -152,7 +160,7 @@ PluginUIWindow::PluginUIWindow (Gtk::Window* win, boost::shared_ptr<PluginInsert
                }
        }
 
-       set_default_size (w, h); 
+       set_default_size (w, h);
 }
 
 PluginUIWindow::~PluginUIWindow ()
@@ -206,11 +214,18 @@ PluginUIWindow::on_focus_out_event (GdkEventFocus *ev)
 void
 PluginUIWindow::on_show ()
 {
+       set_role("plugin_ui");
+
        if (_pluginui) {
-               _pluginui->update_presets ();
+               _pluginui->update_preset_list ();
+               _pluginui->update_preset ();
        }
 
-       Window::on_show ();
+       if (_pluginui) {
+               if (_pluginui->on_window_show (_title)) {
+                       Window::on_show ();
+               }
+       }
 
        if (parent) {
                // set_transient_for (*parent);
@@ -221,10 +236,25 @@ void
 PluginUIWindow::on_hide ()
 {
        Window::on_hide ();
+
+       if (_pluginui) {
+               _pluginui->on_window_hide ();
+       }
+}
+
+void
+PluginUIWindow::set_title(const std::string& title)
+{
+       Gtk::Window::set_title(title);
+       _title = title;
 }
 
 bool
+#ifdef VST_SUPPORT
 PluginUIWindow::create_vst_editor(boost::shared_ptr<PluginInsert> insert)
+#else
+PluginUIWindow::create_vst_editor(boost::shared_ptr<PluginInsert>)
+#endif
 {
 #ifndef VST_SUPPORT
        return false;
@@ -238,39 +268,46 @@ PluginUIWindow::create_vst_editor(boost::shared_ptr<PluginInsert> insert)
                throw failed_constructor ();
        } else {
                VSTPluginUI* vpu = new VSTPluginUI (insert, vp);
-       
+
                _pluginui = vpu;
+               _pluginui->KeyboardFocused.connect (sigc::mem_fun (*this, &PluginUIWindow::keyboard_focused));
                add (*vpu);
                vpu->package (*this);
        }
 
-       non_gtk_gui = true;
        return true;
 #endif
 }
 
 bool
+#ifdef GTKOSX
 PluginUIWindow::create_audiounit_editor (boost::shared_ptr<PluginInsert> insert)
+#else
+PluginUIWindow::create_audiounit_editor (boost::shared_ptr<PluginInsert>)
+#endif
 {
-#if !defined(HAVE_AUDIOUNITS) || !defined(GTKOSX)
+#ifndef GTKOSX
        return false;
 #else
        VBox* box;
        _pluginui = create_au_gui (insert, &box);
+        _pluginui->KeyboardFocused.connect (sigc::mem_fun (*this, &PluginUIWindow::keyboard_focused));
        add (*box);
-       non_gtk_gui = true;
 
-       extern sigc::signal<void,bool> ApplicationActivationChanged;
-       ApplicationActivationChanged.connect (mem_fun (*this, &PluginUIWindow::app_activated));
+       Application::instance()->ActivationChanged.connect (mem_fun (*this, &PluginUIWindow::app_activated));
 
        return true;
 #endif
 }
 
 void
+#ifdef GTKOSX
 PluginUIWindow::app_activated (bool yn)
+#else
+PluginUIWindow::app_activated (bool)
+#endif
 {
-#if defined (HAVE_AUDIOUNITS) && defined(GTKOSX)
+#ifdef GTKOSX
        cerr << "APP activated ? " << yn << endl;
        if (_pluginui) {
                if (yn) {
@@ -284,7 +321,7 @@ PluginUIWindow::app_activated (bool yn)
                        hide ();
                        _pluginui->deactivate ();
                }
-       } 
+       }
 #endif
 }
 
@@ -296,7 +333,7 @@ PluginUIWindow::create_lv2_editor(boost::shared_ptr<PluginInsert> insert)
 #else
 
        boost::shared_ptr<LV2Plugin> vp;
-       
+
        if ((vp = boost::dynamic_pointer_cast<LV2Plugin> (insert->plugin())) == 0) {
                error << _("create_lv2_editor called on non-LV2 plugin") << endmsg;
                throw failed_constructor ();
@@ -307,32 +344,71 @@ PluginUIWindow::create_lv2_editor(boost::shared_ptr<PluginInsert> insert)
                lpu->package (*this);
        }
 
-       non_gtk_gui = false;
        return true;
 #endif
 }
 
+void
+PluginUIWindow::keyboard_focused (bool yn)
+{
+       _keyboard_focused = yn;
+}
+
 bool
 PluginUIWindow::on_key_press_event (GdkEventKey* event)
 {
-       if (!key_press_focus_accelerator_handler (*this, event)) {
-               return PublicEditor::instance().on_key_press_event(event);
-       } else {
+       if (_keyboard_focused) {
+               if (_pluginui) {
+                        if (_pluginui->non_gtk_gui()) {
+                                _pluginui->forward_key_event (event); 
+                        } else {
+                                return relay_key_press (event, this);
+                        }
+               }
                return true;
+       } else {
+                /* for us to be getting key press events, there really
+                   MUST be a _pluginui, but just to be safe, check ...
+                */
+
+                if (_pluginui) {
+                        if (_pluginui->non_gtk_gui()) {
+                                /* pass editor window as the window for the event
+                                   to be handled in, not this one, because there are
+                                   no widgets in this window that we want to have
+                                   key focus.
+                                */
+                                return relay_key_press (event, &PublicEditor::instance());
+                        } else {
+                                return relay_key_press (event, this);
+                        }
+                } else {
+                        return false;
+                }
        }
 }
 
 bool
-PluginUIWindow::on_key_release_event (GdkEventKeyevent)
+PluginUIWindow::on_key_release_event (GdkEventKey *event)
 {
-       return true;
+       if (_keyboard_focused) {
+               if (_pluginui) {
+                        if (_pluginui->non_gtk_gui()) {
+                                _pluginui->forward_key_event (event);
+                        } 
+                        return true;
+               }
+               return false;
+       } else {
+               return true;
+       }
 }
 
 void
 PluginUIWindow::plugin_going_away ()
 {
-       ENSURE_GUI_THREAD(mem_fun(*this, &PluginUIWindow::plugin_going_away));
-       
+       ENSURE_GUI_THREAD (*this, &PluginUIWindow::plugin_going_away)
+
        if (_pluginui) {
                _pluginui->stop_updating(0);
        }
@@ -345,46 +421,63 @@ PluginUIWindow::plugin_going_away ()
 PlugUIBase::PlugUIBase (boost::shared_ptr<PluginInsert> pi)
        : insert (pi),
          plugin (insert->plugin()),
-         save_button(_("Add")),
+         add_button (_("Add")),
+         save_button (_("Save")),
+         delete_button (_("Delete")),
          bypass_button (_("Bypass")),
          latency_gui (0),
          plugin_analysis_expander (_("Plugin analysis"))
 {
-       //preset_combo.set_use_arrows_always(true);
-       update_presets();
-       preset_combo.set_size_request (100, -1);
-       preset_combo.set_active_text ("");
-       preset_combo.signal_changed().connect(mem_fun(*this, &PlugUIBase::setting_selected));
+       _preset_combo.set_size_request (100, -1);
+       _preset_modified.set_size_request (16, -1);
+       _preset_combo.signal_changed().connect(sigc::mem_fun(*this, &PlugUIBase::preset_selected));
+       _no_load_preset = 0;
+
+       _preset_box.pack_start (_preset_combo);
+       _preset_box.pack_start (_preset_modified);
+
+       update_preset_list ();
+       update_preset ();
+       
+       add_button.set_name ("PluginAddButton");
+       add_button.signal_clicked().connect (sigc::mem_fun (*this, &PlugUIBase::add_plugin_setting));
 
        save_button.set_name ("PluginSaveButton");
-       save_button.signal_clicked().connect(mem_fun(*this, &PlugUIBase::save_plugin_setting));
+       save_button.signal_clicked().connect(sigc::mem_fun(*this, &PlugUIBase::save_plugin_setting));
+
+       delete_button.set_name ("PluginDeleteButton");
+       delete_button.signal_clicked().connect (sigc::mem_fun (*this, &PlugUIBase::delete_plugin_setting));
 
-       insert->ActiveChanged.connect (bind(
-                       mem_fun(*this, &PlugUIBase::processor_active_changed),
-                       boost::weak_ptr<Processor>(insert)));
+       insert->ActiveChanged.connect (active_connection, invalidator (*this), boost::bind (&PlugUIBase::processor_active_changed, this,  boost::weak_ptr<Processor>(insert)), gui_context());
 
        bypass_button.set_active (!pi->active());
 
        bypass_button.set_name ("PluginBypassButton");
-       bypass_button.signal_toggled().connect (mem_fun(*this, &PlugUIBase::bypass_toggled));
+       bypass_button.signal_toggled().connect (sigc::mem_fun(*this, &PlugUIBase::bypass_toggled));
        focus_button.add_events (Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
 
-       focus_button.signal_button_release_event().connect (mem_fun(*this, &PlugUIBase::focus_toggled));
+       focus_button.signal_button_release_event().connect (sigc::mem_fun(*this, &PlugUIBase::focus_toggled));
        focus_button.add_events (Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK);
 
        /* these images are not managed, so that we can remove them at will */
 
        focus_out_image = new Image (get_icon (X_("computer_keyboard")));
        focus_in_image = new Image (get_icon (X_("computer_keyboard_active")));
-       
-       focus_button.add (*focus_out_image);
 
-       ARDOUR_UI::instance()->set_tip (&focus_button, _("Click to allow the plugin to receive keyboard events that Ardour would normally use as a shortcut"), "");
-       ARDOUR_UI::instance()->set_tip (&bypass_button, _("Click to enable/disable this plugin"), "");
+       focus_button.add (*focus_out_image);
 
-       plugin_analysis_expander.property_expanded().signal_changed().connect( mem_fun(*this, &PlugUIBase::toggle_plugin_analysis));
+       ARDOUR_UI::instance()->set_tip (focus_button, string_compose (_("Click to allow the plugin to receive keyboard events that %1 would normally use as a shortcut"), PROGRAM_NAME));
+       ARDOUR_UI::instance()->set_tip (bypass_button, _("Click to enable/disable this plugin"));
 
+       plugin_analysis_expander.property_expanded().signal_changed().connect( sigc::mem_fun(*this, &PlugUIBase::toggle_plugin_analysis));
        plugin_analysis_expander.set_expanded(false);
+       
+       insert->DropReferences.connect (death_connection, invalidator (*this), boost::bind (&PlugUIBase::plugin_going_away, this), gui_context());
+
+       plugin->PresetAdded.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::preset_added_or_removed, this), gui_context ());
+       plugin->PresetRemoved.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::preset_added_or_removed, this), gui_context ());   
+       plugin->PresetLoaded.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::update_preset, this), gui_context ());
+       plugin->ParameterChanged.connect (*this, invalidator (*this), boost::bind (&PlugUIBase::parameter_changed, this, _1, _2), gui_context ());
 }
 
 PlugUIBase::~PlugUIBase()
@@ -392,20 +485,30 @@ PlugUIBase::~PlugUIBase()
        delete latency_gui;
 }
 
+void
+PlugUIBase::plugin_going_away ()
+{
+       /* drop references to the plugin/insert */
+       insert.reset ();
+       plugin.reset ();
+       death_connection.disconnect ();
+}
+
 void
 PlugUIBase::set_latency_label ()
 {
-       char buf[64];
-       nframes_t l = insert->effective_latency ();
-       nframes_t sr = insert->session().frame_rate();
+       framecnt_t const l = insert->effective_latency ();
+       framecnt_t const sr = insert->session().frame_rate ();
+
+       string t;
 
        if (l < sr / 1000) {
-               snprintf (buf, sizeof (buf), "latency (%d samples)", l);
+               t = string_compose (_("latency (%1 samples)"), l);
        } else {
-               snprintf (buf, sizeof (buf), "latency (%.2f msecs)", (float) l / ((float) sr / 1000.0f));
+               t = string_compose (_("latency (%1 ms)"), (float) l / ((float) sr / 1000.0f));
        }
 
-       latency_label.set_text (buf);
+       latency_label.set_text (t);
 }
 
 void
@@ -415,7 +518,7 @@ PlugUIBase::latency_button_clicked ()
                latency_gui = new LatencyGUI (*(insert.get()), insert->session().frame_rate(), insert->session().get_block_size());
                latency_dialog = new ArdourDialog ("Edit Latency", false, false);
                latency_dialog->get_vbox()->pack_start (*latency_gui);
-               latency_dialog->signal_hide().connect (mem_fun (*this, &PlugUIBase::set_latency_label));
+               latency_dialog->signal_hide().connect (sigc::mem_fun (*this, &PlugUIBase::set_latency_label));
        }
 
        latency_dialog->show_all ();
@@ -424,7 +527,7 @@ PlugUIBase::latency_button_clicked ()
 void
 PlugUIBase::processor_active_changed (boost::weak_ptr<Processor> weak_p)
 {
-       ENSURE_GUI_THREAD(bind (mem_fun(*this, &PlugUIBase::processor_active_changed), weak_p));
+       ENSURE_GUI_THREAD (*this, &PlugUIBase::processor_active_changed, weak_p)
        boost::shared_ptr<Processor> p (weak_p);
        if (p) {
                bypass_button.set_active (!p->active());
@@ -432,45 +535,63 @@ PlugUIBase::processor_active_changed (boost::weak_ptr<Processor> weak_p)
 }
 
 void
-PlugUIBase::setting_selected()
+PlugUIBase::preset_selected ()
 {
-       if (preset_combo.get_active_text().length() > 0) {
-               const Plugin::PresetRecord* pr = plugin->preset_by_label(preset_combo.get_active_text());
+       if (_no_load_preset) {
+               return;
+       }
+
+       if (_preset_combo.get_active_text().length() > 0) {
+               const Plugin::PresetRecord* pr = plugin->preset_by_label (_preset_combo.get_active_text());
                if (pr) {
-                       plugin->load_preset(pr->uri);
+                       plugin->load_preset (*pr);
                } else {
                        warning << string_compose(_("Plugin preset %1 not found"),
-                                       preset_combo.get_active_text()) << endmsg;
+                                                 _preset_combo.get_active_text()) << endmsg;
                }
        }
 }
 
 void
-PlugUIBase::save_plugin_setting ()
+PlugUIBase::add_plugin_setting ()
 {
-       ArdourPrompter prompter (true);
-       prompter.set_prompt(_("Name of New Preset:"));
-       prompter.add_button (Gtk::Stock::ADD, Gtk::RESPONSE_ACCEPT);
-       prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);
-       prompter.set_type_hint (Gdk::WINDOW_TYPE_HINT_UTILITY);
-
-       prompter.show_all();
-       prompter.present ();
+       NewPluginPresetDialog d (plugin);
 
-       switch (prompter.run ()) {
+       switch (d.run ()) {
        case Gtk::RESPONSE_ACCEPT:
-               string name;
-               prompter.get_result(name);
-               if (name.length()) {
-                       if (plugin->save_preset(name)) {
-                               update_presets();
-                               preset_combo.set_active_text (name);
-                       }
+               if (d.name().empty()) {
+                       break;
+               }
+
+               if (d.replace ()) {
+                       plugin->remove_preset (d.name ());
+               }
+
+               Plugin::PresetRecord const r = plugin->save_preset (d.name());
+               if (!r.uri.empty ()) {
+                       plugin->load_preset (r);
                }
                break;
        }
 }
 
+void
+PlugUIBase::save_plugin_setting ()
+{
+       string const name = _preset_combo.get_active_text ();
+       plugin->remove_preset (name);
+       Plugin::PresetRecord const r = plugin->save_preset (name);
+       if (!r.uri.empty ()) {
+               plugin->load_preset (r);
+       }
+}
+
+void
+PlugUIBase::delete_plugin_setting ()
+{
+       plugin->remove_preset (_preset_combo.get_active_text ());
+}
+
 void
 PlugUIBase::bypass_toggled ()
 {
@@ -486,20 +607,22 @@ PlugUIBase::bypass_toggled ()
 }
 
 bool
-PlugUIBase::focus_toggled (GdkEventButton* ev)
+PlugUIBase::focus_toggled (GdkEventButton*)
 {
        if (Keyboard::the_keyboard().some_magic_widget_has_focus()) {
                Keyboard::the_keyboard().magic_widget_drop_focus();
                focus_button.remove ();
                focus_button.add (*focus_out_image);
                focus_out_image->show ();
-               ARDOUR_UI::instance()->set_tip (&focus_button, _("Click to allow the plugin to receive keyboard events that Ardour would normally use as a shortcut"), "");
+               ARDOUR_UI::instance()->set_tip (focus_button, string_compose (_("Click to allow the plugin to receive keyboard events that %1 would normally use as a shortcut"), PROGRAM_NAME));
+               KeyboardFocused (false);
        } else {
                Keyboard::the_keyboard().magic_widget_grab_focus();
                focus_button.remove ();
                focus_button.add (*focus_in_image);
                focus_in_image->show ();
-               ARDOUR_UI::instance()->set_tip (&focus_button, _("Click to allow normal use of Ardour keyboard shortcuts"), "");
+               ARDOUR_UI::instance()->set_tip (focus_button, string_compose (_("Click to allow normal use of %1 keyboard shortcuts"), PROGRAM_NAME));
+               KeyboardFocused (true);
        }
 
        return true;
@@ -508,17 +631,17 @@ PlugUIBase::focus_toggled (GdkEventButton* ev)
 void
 PlugUIBase::toggle_plugin_analysis()
 {
-       if (plugin_analysis_expander.get_expanded() && 
+       if (plugin_analysis_expander.get_expanded() &&
             !plugin_analysis_expander.get_child()) {
                // Create the GUI
                PluginEqGui *foo = new PluginEqGui(insert);
                plugin_analysis_expander.add( *foo );
                plugin_analysis_expander.show_all();
-       } 
-       
+       }
+
        Gtk::Widget *gui;
 
-       if (!plugin_analysis_expander.get_expanded() && 
+       if (!plugin_analysis_expander.get_expanded() &&
             (gui = plugin_analysis_expander.get_child())) {
                // Hide & remove
                gui->hide();
@@ -545,13 +668,61 @@ PlugUIBase::toggle_plugin_analysis()
 }
 
 void
-PlugUIBase::update_presets ()
+PlugUIBase::update_preset_list ()
 {
        vector<string> preset_labels;
        vector<ARDOUR::Plugin::PresetRecord> presets = plugin->get_presets();
-       for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator i = presets.begin();
-                  i != presets.end(); ++i) {
-               preset_labels.push_back(i->label);
+
+       ++_no_load_preset;
+
+       for (vector<ARDOUR::Plugin::PresetRecord>::const_iterator i = presets.begin(); i != presets.end(); ++i) {
+               preset_labels.push_back (i->label);
        }
-       set_popdown_strings (preset_combo, preset_labels);
+
+       set_popdown_strings (_preset_combo, preset_labels);
+       
+       --_no_load_preset;
+}
+
+void
+PlugUIBase::update_preset ()
+{
+       Plugin::PresetRecord p = plugin->last_preset();
+
+       ++_no_load_preset;
+       _preset_combo.set_active_text (p.label);
+       --_no_load_preset;
+
+       save_button.set_sensitive (!p.uri.empty() && p.user);
+       delete_button.set_sensitive (!p.uri.empty() && p.user);
+
+       update_preset_modified ();
+}
+
+void
+PlugUIBase::update_preset_modified ()
+{
+       if (plugin->last_preset().uri.empty()) {
+               _preset_modified.set_text ("");
+               return;
+       }
+       
+       bool const c = plugin->parameter_changed_since_last_preset ();
+       if (_preset_modified.get_text().empty() == c) {
+               _preset_modified.set_text (c ? "*" : "");
+       }
+}
+
+void
+PlugUIBase::parameter_changed (uint32_t, float)
+{
+       update_preset_modified ();
+}
+
+void
+PlugUIBase::preset_added_or_removed ()
+{
+       /* Update both the list and the currently-displayed preset */
+       update_preset_list ();
+       update_preset ();
 }