Partial split of film viewer.
[dcpomatic.git] / src / wx / content_panel.cc
index d1a00c02122ba354fdfdd4ea03146df1fc53b302..e5990a564b1d1068f8841a996f223ae820398a91 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
 #include "wx_util.h"
 #include "video_panel.h"
 #include "audio_panel.h"
-#include "subtitle_panel.h"
+#include "text_panel.h"
 #include "timing_panel.h"
 #include "timeline_dialog.h"
 #include "image_sequence_dialog.h"
-#include "film_viewer.h"
+#include "control_film_viewer.h"
 #include "lib/audio_content.h"
-#include "lib/subtitle_content.h"
+#include "lib/text_content.h"
 #include "lib/video_content.h"
 #include "lib/ffmpeg_content.h"
 #include "lib/content_factory.h"
 #include "lib/dcp_content.h"
 #include "lib/case_insensitive_sorter.h"
 #include "lib/playlist.h"
+#include "lib/config.h"
+#include "lib/log.h"
+#include "lib/compose.hpp"
+#include "lib/string_text_file_content.h"
+#include "lib/string_text_file.h"
 #include <wx/wx.h>
 #include <wx/notebook.h>
 #include <wx/listctrl.h>
@@ -47,19 +52,30 @@ using std::list;
 using std::string;
 using std::cout;
 using std::vector;
+using std::max;
 using std::exception;
 using boost::shared_ptr;
 using boost::weak_ptr;
 using boost::dynamic_pointer_cast;
 using boost::optional;
 
-ContentPanel::ContentPanel (wxNotebook* n, boost::shared_ptr<Film> film, FilmViewer* viewer)
-       : _timeline_dialog (0)
+#define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
+
+ContentPanel::ContentPanel (wxNotebook* n, boost::shared_ptr<Film> film, ControlFilmViewer* viewer)
+       : _video_panel (0)
+       , _audio_panel (0)
+       , _timeline_dialog (0)
        , _parent (n)
+       , _last_selected_tab (0)
        , _film (film)
        , _film_viewer (viewer)
        , _generally_sensitive (true)
+       , _ignore_deselect (false)
 {
+       for (int i = 0; i < TEXT_COUNT; ++i) {
+               _text_panel[i] = 0;
+       }
+
        _panel = new wxPanel (n);
        _sizer = new wxBoxSizer (wxVERTICAL);
        _panel->SetSizer (_sizer);
@@ -79,22 +95,26 @@ ContentPanel::ContentPanel (wxNotebook* n, boost::shared_ptr<Film> film, FilmVie
                wxBoxSizer* b = new wxBoxSizer (wxVERTICAL);
 
                _add_file = new wxButton (_panel, wxID_ANY, _("Add file(s)..."));
-               _add_file->SetToolTip (_("Add video, image or sound files to the film."));
+               _add_file->SetToolTip (_("Add video, image, sound or subtitle files to the film."));
                b->Add (_add_file, 0, wxEXPAND | wxALL, DCPOMATIC_BUTTON_STACK_GAP);
 
                _add_folder = new wxButton (_panel, wxID_ANY, _("Add folder..."));
-               _add_folder->SetToolTip (_("Add a folder of image files (which will be used as a moving image sequence) or a DCP."));
+               _add_folder->SetToolTip (_("Add a folder of image files (which will be used as a moving image sequence) or a folder of sound files."));
                b->Add (_add_folder, 1, wxEXPAND | wxALL, DCPOMATIC_BUTTON_STACK_GAP);
 
+               _add_dcp = new wxButton (_panel, wxID_ANY, _("Add DCP..."));
+               _add_dcp->SetToolTip (_("Add a DCP."));
+               b->Add (_add_dcp, 1, wxEXPAND | wxALL, DCPOMATIC_BUTTON_STACK_GAP);
+
                _remove = new wxButton (_panel, wxID_ANY, _("Remove"));
                _remove->SetToolTip (_("Remove the selected piece of content from the film."));
                b->Add (_remove, 0, wxEXPAND | wxALL, DCPOMATIC_BUTTON_STACK_GAP);
 
-               _earlier = new wxButton (_panel, wxID_ANY, _("Up"));
+               _earlier = new wxButton (_panel, wxID_ANY, _("Earlier"));
                _earlier->SetToolTip (_("Move the selected piece of content earlier in the film."));
                b->Add (_earlier, 0, wxEXPAND | wxALL, DCPOMATIC_BUTTON_STACK_GAP);
 
-               _later = new wxButton (_panel, wxID_ANY, _("Down"));
+               _later = new wxButton (_panel, wxID_ANY, _("Later"));
                _later->SetToolTip (_("Move the selected piece of content later in the film."));
                b->Add (_later, 0, wxEXPAND | wxALL, DCPOMATIC_BUTTON_STACK_GAP);
 
@@ -110,25 +130,20 @@ ContentPanel::ContentPanel (wxNotebook* n, boost::shared_ptr<Film> film, FilmVie
        _notebook = new wxNotebook (_panel, wxID_ANY);
        _sizer->Add (_notebook, 1, wxEXPAND | wxTOP, 6);
 
-       _video_panel = new VideoPanel (this);
-       _panels.push_back (_video_panel);
-       _audio_panel = new AudioPanel (this);
-       _panels.push_back (_audio_panel);
-       _subtitle_panel = new SubtitlePanel (this);
-       _panels.push_back (_subtitle_panel);
        _timing_panel = new TimingPanel (this, _film_viewer);
-       _panels.push_back (_timing_panel);
+       _notebook->AddPage (_timing_panel, _("Timing"), false);
 
-       _content->Bind (wxEVT_COMMAND_LIST_ITEM_SELECTED, boost::bind (&ContentPanel::selection_changed, this));
-       _content->Bind (wxEVT_COMMAND_LIST_ITEM_DESELECTED, boost::bind (&ContentPanel::selection_changed, this));
-       _content->Bind (wxEVT_COMMAND_LIST_ITEM_RIGHT_CLICK, boost::bind (&ContentPanel::right_click, this, _1));
+       _content->Bind (wxEVT_LIST_ITEM_SELECTED, boost::bind (&ContentPanel::item_selected, this));
+       _content->Bind (wxEVT_LIST_ITEM_DESELECTED, boost::bind (&ContentPanel::item_deselected, this));
+       _content->Bind (wxEVT_LIST_ITEM_RIGHT_CLICK, boost::bind (&ContentPanel::right_click, this, _1));
        _content->Bind (wxEVT_DROP_FILES, boost::bind (&ContentPanel::files_dropped, this, _1));
-       _add_file->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&ContentPanel::add_file_clicked, this));
-       _add_folder->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&ContentPanel::add_folder_clicked, this));
-       _remove->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&ContentPanel::remove_clicked, this, false));
-       _earlier->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&ContentPanel::earlier_clicked, this));
-       _later->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&ContentPanel::later_clicked, this));
-       _timeline->Bind (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&ContentPanel::timeline_clicked, this));
+       _add_file->Bind (wxEVT_BUTTON, boost::bind (&ContentPanel::add_file_clicked, this));
+       _add_folder->Bind (wxEVT_BUTTON, boost::bind (&ContentPanel::add_folder_clicked, this));
+       _add_dcp->Bind (wxEVT_BUTTON, boost::bind (&ContentPanel::add_dcp_clicked, this));
+       _remove->Bind (wxEVT_BUTTON, boost::bind (&ContentPanel::remove_clicked, this, false));
+       _earlier->Bind (wxEVT_BUTTON, boost::bind (&ContentPanel::earlier_clicked, this));
+       _later->Bind (wxEVT_BUTTON, boost::bind (&ContentPanel::later_clicked, this));
+       _timeline->Bind (wxEVT_BUTTON, boost::bind (&ContentPanel::timeline_clicked, this));
 }
 
 ContentList
@@ -142,8 +157,9 @@ ContentPanel::selected ()
                        break;
                }
 
-               if (s < int (_film->content().size ())) {
-                       sel.push_back (_film->content()[s]);
+               ContentList cl = _film->content();
+               if (s < int (cl.size())) {
+                       sel.push_back (cl[s]);
                }
        }
 
@@ -179,12 +195,12 @@ ContentPanel::selected_audio ()
 }
 
 ContentList
-ContentPanel::selected_subtitle ()
+ContentPanel::selected_text ()
 {
        ContentList sc;
 
        BOOST_FOREACH (shared_ptr<Content> i, selected ()) {
-               if (i->subtitle) {
+               if (!i->text.empty()) {
                        sc.push_back (i);
                }
        }
@@ -219,13 +235,38 @@ ContentPanel::film_changed (Film::Property p)
                break;
        }
 
-       BOOST_FOREACH (ContentSubPanel* i, _panels) {
+       BOOST_FOREACH (ContentSubPanel* i, panels()) {
                i->film_changed (p);
        }
 }
 
 void
-ContentPanel::selection_changed ()
+ContentPanel::item_deselected ()
+{
+       /* Maybe this is just a re-click on the same item; if not, _ignore_deselect will stay
+          false and item_deselected_foo will handle the deselection.
+       */
+       _ignore_deselect = false;
+       signal_manager->when_idle (boost::bind (&ContentPanel::item_deselected_idle, this));
+}
+
+void
+ContentPanel::item_deselected_idle ()
+{
+       if (!_ignore_deselect) {
+               check_selection ();
+       }
+}
+
+void
+ContentPanel::item_selected ()
+{
+       _ignore_deselect = true;
+       check_selection ();
+}
+
+void
+ContentPanel::check_selection ()
 {
        if (_last_selected == selected()) {
                /* This was triggered by a re-build of the view but the selection
@@ -238,24 +279,118 @@ ContentPanel::selection_changed ()
 
        setup_sensitivity ();
 
-       BOOST_FOREACH (ContentSubPanel* i, _panels) {
+       BOOST_FOREACH (ContentSubPanel* i, panels()) {
                i->content_selection_changed ();
        }
 
        optional<DCPTime> go_to;
-       BOOST_FOREACH (shared_ptr<Content> i, selected ()) {
-               if (!go_to || i->position() < go_to.get()) {
-                       go_to = i->position ();
+       BOOST_FOREACH (shared_ptr<Content> i, selected()) {
+               DCPTime p;
+               p = i->position();
+               if (dynamic_pointer_cast<StringTextFileContent>(i) && i->paths_valid()) {
+                       /* Rather special case; if we select a text subtitle file jump to its
+                          first subtitle.
+                       */
+                       StringTextFile ts (dynamic_pointer_cast<StringTextFileContent>(i));
+                       if (ts.first()) {
+                               p += DCPTime(ts.first().get(), _film->active_frame_rate_change(i->position()));
+                       }
+               }
+               if (!go_to || p < go_to.get()) {
+                       go_to = p;
                }
        }
 
-       if (go_to) {
-               _film_viewer->set_position (go_to.get ());
+       if (go_to && Config::instance()->jump_to_selected() && signal_manager) {
+               signal_manager->when_idle(boost::bind(&ControlFilmViewer::set_position, _film_viewer, go_to.get().ceil(_film->video_frame_rate())));
        }
 
        if (_timeline_dialog) {
-               _timeline_dialog->set_selection (selected ());
+               _timeline_dialog->set_selection (selected());
+       }
+
+       /* Make required tabs visible */
+
+       if (_notebook->GetPageCount() > 1) {
+               /* There's more than one tab in the notebook so the current selection could be meaningful
+                  to the user; store it so that we can try to restore it later.
+               */
+               _last_selected_tab = 0;
+               if (_notebook->GetSelection() != wxNOT_FOUND) {
+                       _last_selected_tab = _notebook->GetPage(_notebook->GetSelection());
+               }
+       }
+
+       bool have_video = false;
+       bool have_audio = false;
+       bool have_text[TEXT_COUNT] = { false, false };
+       BOOST_FOREACH (shared_ptr<Content> i, selected()) {
+               if (i->video) {
+                       have_video = true;
+               }
+               if (i->audio) {
+                       have_audio = true;
+               }
+               BOOST_FOREACH (shared_ptr<TextContent> j, i->text) {
+                       have_text[j->original_type()] = true;
+               }
+       }
+
+       int off = 0;
+
+       if (have_video && !_video_panel) {
+               _video_panel = new VideoPanel (this);
+               _notebook->InsertPage (off, _video_panel, _video_panel->name());
+       } else if (!have_video && _video_panel) {
+               _notebook->DeletePage (off);
+               _video_panel = 0;
+       }
+
+       if (have_video) {
+               ++off;
        }
+
+       if (have_audio && !_audio_panel) {
+               _audio_panel = new AudioPanel (this);
+               _notebook->InsertPage (off, _audio_panel, _audio_panel->name());
+       } else if (!have_audio && _audio_panel) {
+               _notebook->DeletePage (off);
+               _audio_panel = 0;
+       }
+
+       if (have_audio) {
+               ++off;
+       }
+
+       for (int i = 0; i < TEXT_COUNT; ++i) {
+               if (have_text[i] && !_text_panel[i]) {
+                       _text_panel[i] = new TextPanel (this, static_cast<TextType>(i));
+                       _notebook->InsertPage (off, _text_panel[i], _text_panel[i]->name());
+               } else if (!have_text[i] && _text_panel[i]) {
+                       _notebook->DeletePage (off);
+                       _text_panel[i] = 0;
+               }
+               if (have_text[i]) {
+                       ++off;
+               }
+       }
+
+       /* Set up the tab selection */
+
+       bool done = false;
+       for (size_t i = 0; i < _notebook->GetPageCount(); ++i) {
+               if (_notebook->GetPage(i) == _last_selected_tab) {
+                       _notebook->SetSelection (i);
+                       done = true;
+               }
+       }
+
+       if (!done && _notebook->GetPageCount() > 0) {
+               _notebook->SetSelection (0);
+       }
+
+       setup_sensitivity ();
+       SelectionChanged ();
 }
 
 void
@@ -264,7 +399,7 @@ ContentPanel::add_file_clicked ()
        /* This method is also called when Ctrl-A is pressed, so check that our notebook page
           is visible.
        */
-       if (_parent->GetCurrentPage() != _panel) {
+       if (_parent->GetCurrentPage() != _panel || !_film) {
                return;
        }
 
@@ -310,7 +445,7 @@ ContentPanel::add_folder_clicked ()
                return;
        }
 
-       shared_ptr<Content> content;
+       list<shared_ptr<Content> > content;
 
        try {
                content = content_factory (_film, path);
@@ -319,26 +454,47 @@ ContentPanel::add_folder_clicked ()
                return;
        }
 
-       if (!content) {
+       if (content.empty ()) {
                error_dialog (_parent, _("No content found in this folder."));
                return;
        }
 
-       shared_ptr<ImageContent> ic = dynamic_pointer_cast<ImageContent> (content);
-       if (ic) {
-               ImageSequenceDialog* e = new ImageSequenceDialog (_panel);
-               r = e->ShowModal ();
-               float const frame_rate = e->frame_rate ();
-               e->Destroy ();
-
-               if (r != wxID_OK) {
-                       return;
+       BOOST_FOREACH (shared_ptr<Content> i, content) {
+               shared_ptr<ImageContent> ic = dynamic_pointer_cast<ImageContent> (i);
+               if (ic) {
+                       ImageSequenceDialog* e = new ImageSequenceDialog (_panel);
+                       r = e->ShowModal ();
+                       float const frame_rate = e->frame_rate ();
+                       e->Destroy ();
+
+                       if (r != wxID_OK) {
+                               return;
+                       }
+
+                       ic->set_video_frame_rate (frame_rate);
                }
 
-               ic->set_video_frame_rate (frame_rate);
+               _film->examine_and_add_content (i);
        }
+}
 
-       _film->examine_and_add_content (content);
+void
+ContentPanel::add_dcp_clicked ()
+{
+       wxDirDialog* d = new wxDirDialog (_panel, _("Choose a DCP folder"), wxT (""), wxDD_DIR_MUST_EXIST);
+       int r = d->ShowModal ();
+       boost::filesystem::path const path (wx_to_std (d->GetPath ()));
+       d->Destroy ();
+
+       if (r != wxID_OK) {
+               return;
+       }
+
+       try {
+               _film->examine_and_add_content (shared_ptr<Content> (new DCPContent (_film, path)));
+       } catch (exception& e) {
+               error_dialog (_parent, e.what());
+       }
 }
 
 /** @return true if this remove "click" should be ignored */
@@ -356,19 +512,24 @@ ContentPanel::remove_clicked (bool hotkey)
                _film->remove_content (i);
        }
 
-       selection_changed ();
+       check_selection ();
        return false;
 }
 
 void
 ContentPanel::timeline_clicked ()
 {
+       if (!_film) {
+               return;
+       }
+
        if (_timeline_dialog) {
                _timeline_dialog->Destroy ();
                _timeline_dialog = 0;
        }
 
        _timeline_dialog = new TimelineDialog (this, _film);
+       _timeline_dialog->set_selection (selected());
        _timeline_dialog->Show ();
 }
 
@@ -384,49 +545,51 @@ ContentPanel::setup_sensitivity ()
 {
        _add_file->Enable (_generally_sensitive);
        _add_folder->Enable (_generally_sensitive);
+       _add_dcp->Enable (_generally_sensitive);
 
        ContentList selection = selected ();
        ContentList video_selection = selected_video ();
        ContentList audio_selection = selected_audio ();
 
-       _remove->Enable   (!selection.empty() && _generally_sensitive);
-       _earlier->Enable  (selection.size() == 1 && _generally_sensitive);
-       _later->Enable    (selection.size() == 1 && _generally_sensitive);
-       _timeline->Enable (!_film->content().empty() && _generally_sensitive);
+       _remove->Enable   (_generally_sensitive && !selection.empty());
+       _earlier->Enable  (_generally_sensitive && selection.size() == 1);
+       _later->Enable    (_generally_sensitive && selection.size() == 1);
+       _timeline->Enable (_generally_sensitive && _film && !_film->content().empty());
 
-       _video_panel->Enable    (video_selection.size() > 0 && _generally_sensitive);
-       _audio_panel->Enable    (audio_selection.size() > 0 && _generally_sensitive);
-       _subtitle_panel->Enable (selection.size() == 1 && selection.front()->subtitle && _generally_sensitive);
-       _timing_panel->Enable   (selection.size() == 1 && _generally_sensitive);
+       if (_video_panel) {
+               _video_panel->Enable (_generally_sensitive && video_selection.size() > 0);
+       }
+       if (_audio_panel) {
+               _audio_panel->Enable (_generally_sensitive && audio_selection.size() > 0);
+       }
+       for (int i = 0; i < TEXT_COUNT; ++i) {
+               if (_text_panel[i]) {
+                       _text_panel[i]->Enable (_generally_sensitive && selection.size() == 1 && !selection.front()->text.empty());
+               }
+       }
+       _timing_panel->Enable   (_generally_sensitive);
 }
 
 void
 ContentPanel::set_film (shared_ptr<Film> film)
 {
+       if (_audio_panel) {
+               _audio_panel->set_film (film);
+       }
+
        _film = film;
 
        film_changed (Film::CONTENT);
        film_changed (Film::AUDIO_CHANNELS);
-       selection_changed ();
+       check_selection ();
+       setup_sensitivity ();
 }
 
 void
 ContentPanel::set_general_sensitivity (bool s)
 {
        _generally_sensitive = s;
-
-       _content->Enable (s);
-       _add_file->Enable (s);
-       _add_folder->Enable (s);
-       _remove->Enable (s);
-       _earlier->Enable (s);
-       _later->Enable (s);
-       _timeline->Enable (s);
-
-       /* Set the panels in the content notebook */
-       BOOST_FOREACH (ContentSubPanel* i, _panels) {
-               i->Enable (s);
-       }
+       setup_sensitivity ();
 }
 
 void
@@ -435,7 +598,7 @@ ContentPanel::earlier_clicked ()
        ContentList sel = selected ();
        if (sel.size() == 1) {
                _film->move_content_earlier (sel.front ());
-               selection_changed ();
+               check_selection ();
        }
 }
 
@@ -445,7 +608,7 @@ ContentPanel::later_clicked ()
        ContentList sel = selected ();
        if (sel.size() == 1) {
                _film->move_content_later (sel.front ());
-               selection_changed ();
+               check_selection ();
        }
 }
 
@@ -462,14 +625,33 @@ ContentPanel::set_selection (weak_ptr<Content> wc)
        }
 }
 
+void
+ContentPanel::set_selection (ContentList cl)
+{
+       ContentList content = _film->content ();
+       for (size_t i = 0; i < content.size(); ++i) {
+               if (find(cl.begin(), cl.end(), content[i]) != cl.end()) {
+                       _content->SetItemState (i, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED);
+               } else {
+                       _content->SetItemState (i, 0, wxLIST_STATE_SELECTED);
+               }
+       }
+}
+
 void
 ContentPanel::film_content_changed (int property)
 {
-       if (property == ContentProperty::PATH || property == DCPContentProperty::CAN_BE_PLAYED) {
+       if (
+               property == ContentProperty::PATH ||
+               property == DCPContentProperty::NEEDS_ASSETS ||
+               property == DCPContentProperty::NEEDS_KDM ||
+               property == DCPContentProperty::NAME
+               ) {
+
                setup ();
        }
 
-       BOOST_FOREACH (ContentSubPanel* i, _panels) {
+       BOOST_FOREACH (ContentSubPanel* i, panels()) {
                i->film_content_changed (property);
        }
 }
@@ -494,10 +676,17 @@ ContentPanel::setup ()
        BOOST_FOREACH (shared_ptr<Content> i, content) {
                int const t = _content->GetItemCount ();
                bool const valid = i->paths_valid ();
+
+               /* Temporary debugging for Igor */
+               BOOST_FOREACH (boost::filesystem::path j, i->paths()) {
+                       LOG_GENERAL ("Check %1 %2 answer %3", j.string(), boost::filesystem::exists(j) ? "yes" : "no", valid ? "yes" : "no");
+               }
+
                shared_ptr<DCPContent> dcp = dynamic_pointer_cast<DCPContent> (i);
-               bool const needs_kdm = dcp && !dcp->can_be_played ();
+               bool const needs_kdm = dcp && dcp->needs_kdm ();
+               bool const needs_assets = dcp && dcp->needs_assets ();
 
-               string s = i->summary ();
+               wxString s = std_to_wx (i->summary ());
 
                if (!valid) {
                        s = _("MISSING: ") + s;
@@ -507,9 +696,13 @@ ContentPanel::setup ()
                        s = _("NEEDS KDM: ") + s;
                }
 
+               if (needs_assets) {
+                       s = _("NEEDS OV: ") + s;
+               }
+
                wxListItem item;
                item.SetId (t);
-               item.SetText (std_to_wx (s));
+               item.SetText (s);
                item.SetData (i.get ());
                _content->InsertItem (item);
 
@@ -517,7 +710,7 @@ ContentPanel::setup ()
                        _content->SetItemState (t, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED);
                }
 
-               if (!valid || needs_kdm) {
+               if (!valid || needs_kdm || needs_assets) {
                        _content->SetItemTextColour (t, *wxRED);
                }
        }
@@ -526,6 +719,8 @@ ContentPanel::setup ()
                /* Select the item of content if none was selected before */
                _content->SetItemState (0, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED);
        }
+
+       setup_sensitivity ();
 }
 
 void
@@ -556,7 +751,32 @@ ContentPanel::add_files (list<boost::filesystem::path> paths)
 
        /* XXX: check for lots of files here and do something */
 
-       for (list<boost::filesystem::path>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
-               _film->examine_and_add_content (content_factory (_film, *i));
+       try {
+               BOOST_FOREACH (boost::filesystem::path i, paths) {
+                       BOOST_FOREACH (shared_ptr<Content> j, content_factory (_film, i)) {
+                               _film->examine_and_add_content (j);
+                       }
+               }
+       } catch (exception& e) {
+               error_dialog (_parent, e.what());
+       }
+}
+
+list<ContentSubPanel*>
+ContentPanel::panels () const
+{
+       list<ContentSubPanel*> p;
+       if (_video_panel) {
+               p.push_back (_video_panel);
+       }
+       if (_audio_panel) {
+               p.push_back (_audio_panel);
+       }
+       for (int i = 0; i < TEXT_COUNT; ++i) {
+               if (_text_panel[i]) {
+                       p.push_back (_text_panel[i]);
+               }
        }
+       p.push_back (_timing_panel);
+       return p;
 }