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authorJörg Frings-Fürst <debian@jff-webhosting.net>2018-05-01 14:34:32 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2018-05-01 14:34:32 +0200
commit49120f48474fc8fdc2448c75d961bc238213cfac (patch)
tree05bcdb95d65a807cf0f1ffffd066c09074b5cf56 /src/events/EventsBranch.vala
parent2492891f112caac6076ce49721d9d5d78a152c3a (diff)
New upstream version 0.28.2upstream/0.28.2
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1 files changed, 534 insertions, 0 deletions
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+/* Copyright 2016 Software Freedom Conservancy Inc.
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later). See the COPYING file in this distribution.
+ */
+
+public class Events.Branch : Sidebar.Branch {
+ internal static string icon = Resources.ICON_FOLDER;
+ internal static string events_icon = Resources.ICON_EVENTS;
+ internal static string single_event_icon = Resources.ICON_ONE_EVENT;
+ internal static string no_event_icon = Resources.ICON_NO_EVENT;
+
+ // NOTE: Because the comparators must be static methods (due to CompareFunc's stupid impl.)
+ // and there's an assumption that only one Events.Branch is ever created, this is a static
+ // member but it's modified by instance methods.
+ private static bool sort_ascending = false;
+
+ private Gee.HashMap<Event, Events.EventEntry> entry_map = new Gee.HashMap<
+ Event, Events.EventEntry>();
+ private Events.UndatedDirectoryEntry undated_entry = new Events.UndatedDirectoryEntry();
+ private Events.NoEventEntry no_event_entry = new Events.NoEventEntry();
+ private Events.MasterDirectoryEntry all_events_entry = new Events.MasterDirectoryEntry();
+
+ public Branch() {
+ base (new Sidebar.Header(_("Events"), _("Browse through your events")),
+ Sidebar.Branch.Options.STARTUP_EXPAND_TO_FIRST_CHILD,
+ event_year_comparator);
+
+ graft(get_root(), all_events_entry);
+
+ // seed the branch
+ foreach (DataObject object in Event.global.get_all())
+ add_event((Event) object);
+
+ show_no_events(Event.global.get_no_event_objects().size > 0);
+
+ // monitor Events for future changes
+ Event.global.contents_altered.connect(on_events_added_removed);
+ Event.global.items_altered.connect(on_events_altered);
+ Event.global.no_event_collection_altered.connect(on_no_event_collection_altered);
+
+ // monitor sorting criteria (see note at sort_ascending about this)
+ Config.Facade.get_instance().events_sort_ascending_changed.connect(on_config_changed);
+ }
+
+ ~Branch() {
+ Event.global.contents_altered.disconnect(on_events_added_removed);
+ Event.global.items_altered.disconnect(on_events_altered);
+ Event.global.no_event_collection_altered.disconnect(on_no_event_collection_altered);
+
+ Config.Facade.get_instance().events_sort_ascending_changed.disconnect(on_config_changed);
+ }
+
+ internal static void init() {
+ sort_ascending = Config.Facade.get_instance().get_events_sort_ascending();
+ }
+
+ internal static void terminate() {
+ }
+
+ public bool is_user_renameable() {
+ return true;
+ }
+
+ public Events.MasterDirectoryEntry get_master_entry() {
+ return all_events_entry;
+ }
+
+ private static int event_year_comparator(Sidebar.Entry a, Sidebar.Entry b) {
+ if (a == b)
+ return 0;
+
+ // The Undated and No Event entries should always appear last in the
+ // list, respectively.
+ if (a is Events.UndatedDirectoryEntry) {
+ if (b is Events.NoEventEntry)
+ return -1;
+ return 1;
+ } else if (b is Events.UndatedDirectoryEntry) {
+ if (a is Events.NoEventEntry)
+ return 1;
+ return -1;
+ }
+
+ if (a is Events.NoEventEntry)
+ return 1;
+ else if (b is Events.NoEventEntry)
+ return -1;
+
+ // The All events entry should always appear on top
+ if (a is Events.MasterDirectoryEntry)
+ return -1;
+ else if (b is Events.MasterDirectoryEntry)
+ return 1;
+
+ if (!sort_ascending) {
+ Sidebar.Entry swap = a;
+ a = b;
+ b = swap;
+ }
+
+ int result =
+ ((Events.YearDirectoryEntry) a).get_year() - ((Events.YearDirectoryEntry) b).get_year();
+ assert(result != 0);
+
+ return result;
+ }
+
+ private static int event_month_comparator(Sidebar.Entry a, Sidebar.Entry b) {
+ if (a == b)
+ return 0;
+
+ if (!sort_ascending) {
+ Sidebar.Entry swap = a;
+ a = b;
+ b = swap;
+ }
+
+ int result =
+ ((Events.MonthDirectoryEntry) a).get_month() - ((Events.MonthDirectoryEntry) b).get_month();
+ assert(result != 0);
+
+ return result;
+ }
+
+ private static int event_comparator(Sidebar.Entry a, Sidebar.Entry b) {
+ if (a == b)
+ return 0;
+
+ if (!sort_ascending) {
+ Sidebar.Entry swap = a;
+ a = b;
+ b = swap;
+ }
+
+ int64 result = ((Events.EventEntry) a).get_event().get_start_time()
+ - ((Events.EventEntry) b).get_event().get_start_time();
+
+ // to stabilize sort (events with the same start time are allowed)
+ if (result == 0) {
+ result = ((Events.EventEntry) a).get_event().get_event_id().id
+ - ((Events.EventEntry) b).get_event().get_event_id().id;
+ }
+
+ assert(result != 0);
+
+ return (result < 0) ? -1 : 1;
+ }
+
+ private static int undated_event_comparator(Sidebar.Entry a, Sidebar.Entry b) {
+ if (a == b)
+ return 0;
+
+ if (!sort_ascending) {
+ Sidebar.Entry swap = a;
+ a = b;
+ b = swap;
+ }
+
+ int ret = ((Events.EventEntry) a).get_event().get_name().collate(
+ ((Events.EventEntry) b).get_event().get_name());
+
+ if (ret == 0)
+ ret = (int) (((Events.EventEntry) b).get_event().get_instance_id() -
+ ((Events.EventEntry) a).get_event().get_instance_id());
+
+ return ret;
+ }
+
+ public Events.EventEntry? get_entry_for_event(Event event) {
+ return entry_map.get(event);
+ }
+
+ private void on_config_changed() {
+ bool value = Config.Facade.get_instance().get_events_sort_ascending();
+
+ sort_ascending = value;
+ reorder_all();
+ }
+
+ private void on_events_added_removed(Gee.Iterable<DataObject>? added,
+ Gee.Iterable<DataObject>? removed) {
+ if (added != null) {
+ foreach (DataObject object in added)
+ add_event((Event) object);
+ }
+
+ if (removed != null) {
+ foreach (DataObject object in removed)
+ remove_event((Event) object);
+ }
+ }
+
+ private void on_events_altered(Gee.Map<DataObject, Alteration> altered) {
+ foreach (DataObject object in altered.keys) {
+ Event event = (Event) object;
+ Alteration alteration = altered.get(object);
+
+ if (alteration.has_detail("metadata", "time")) {
+ // can't merely re-sort the event because it might have moved to a new month or
+ // even a new year
+ move_event(event);
+ } else if (alteration.has_detail("metadata", "name")) {
+ Events.EventEntry? entry = entry_map.get(event);
+ assert(entry != null);
+
+ entry.sidebar_name_changed(event.get_name());
+ entry.sidebar_tooltip_changed(event.get_name());
+ }
+ }
+ }
+
+ private void on_no_event_collection_altered() {
+ show_no_events(Event.global.get_no_event_objects().size > 0);
+ }
+
+ private void add_event(Event event) {
+ time_t event_time = event.get_start_time();
+ if (event_time == 0) {
+ add_undated_event(event);
+
+ return;
+ }
+
+ Time event_tm = Time.local(event_time);
+
+ Sidebar.Entry? year;
+ Sidebar.Entry? month = find_event_month(event, event_tm, out year);
+ if (month != null) {
+ graft_event(month, event, event_comparator);
+
+ return;
+ }
+
+ if (year == null) {
+ year = new Events.YearDirectoryEntry(event_tm.format(SubEventsDirectoryPage.YEAR_FORMAT),
+ event_tm);
+ graft(get_root(), year, event_month_comparator);
+ }
+
+ month = new Events.MonthDirectoryEntry(event_tm.format(SubEventsDirectoryPage.MONTH_FORMAT),
+ event_tm);
+ graft(year, month, event_comparator);
+
+ graft_event(month, event, event_comparator);
+ }
+
+ private void move_event(Event event) {
+ time_t event_time = event.get_start_time();
+ if (event_time == 0) {
+ move_to_undated_event(event);
+
+ return;
+ }
+
+ Time event_tm = Time.local(event_time);
+
+ Sidebar.Entry? year;
+ Sidebar.Entry? month = find_event_month(event, event_tm, out year);
+
+ if (year == null) {
+ year = new Events.YearDirectoryEntry(event_tm.format(SubEventsDirectoryPage.YEAR_FORMAT),
+ event_tm);
+ graft(get_root(), year, event_month_comparator);
+ }
+
+ if (month == null) {
+ month = new Events.MonthDirectoryEntry(event_tm.format(SubEventsDirectoryPage.MONTH_FORMAT),
+ event_tm);
+ graft(year, month, event_comparator);
+ }
+
+ reparent_event(event, month);
+ }
+
+ private void remove_event(Event event) {
+ // the following code works for undated events as well as dated (no need for special
+ // case, as in add_event())
+ Sidebar.Entry? entry;
+ bool removed = entry_map.unset(event, out entry);
+ assert(removed);
+
+ Sidebar.Entry? parent = get_parent(entry);
+ assert(parent != null);
+
+ prune(entry);
+
+ // prune up the tree to the root
+ while (get_child_count(parent) == 0 && parent != get_root()) {
+ Sidebar.Entry? grandparent = get_parent(parent);
+ assert(grandparent != null);
+
+ prune(parent);
+
+ parent = grandparent;
+ }
+ }
+
+ private Sidebar.Entry? find_event_month(Event event, Time event_tm, out Sidebar.Entry found_year) {
+ // find the year first
+ found_year = find_event_year(event, event_tm);
+ if (found_year == null)
+ return null;
+
+ int event_month = event_tm.month + 1;
+
+ // found the year, traverse the months
+ return find_first_child(found_year, (entry) => {
+ return ((Events.MonthDirectoryEntry) entry).get_month() == event_month;
+ });
+ }
+
+ private Sidebar.Entry? find_event_year(Event event, Time event_tm) {
+ int event_year = event_tm.year + 1900;
+
+ return find_first_child(get_root(), (entry) => {
+ if ((entry is Events.UndatedDirectoryEntry) || (entry is Events.NoEventEntry) ||
+ entry is Events.MasterDirectoryEntry)
+ return false;
+ else
+ return ((Events.YearDirectoryEntry) entry).get_year() == event_year;
+ });
+ }
+
+ private void add_undated_event(Event event) {
+ if (!has_entry(undated_entry))
+ graft(get_root(), undated_entry, undated_event_comparator);
+
+ graft_event(undated_entry, event);
+ }
+
+ private void move_to_undated_event(Event event) {
+ if (!has_entry(undated_entry))
+ graft(get_root(), undated_entry);
+
+ reparent_event(event, undated_entry);
+ }
+
+ private void graft_event(Sidebar.Entry parent, Event event,
+ owned CompareFunc<Sidebar.Entry>? comparator = null) {
+ Events.EventEntry entry = new Events.EventEntry(event);
+ entry_map.set(event, entry);
+
+ graft(parent, entry, comparator);
+ }
+
+ private void reparent_event(Event event, Sidebar.Entry new_parent) {
+ Events.EventEntry? entry = entry_map.get(event);
+ assert(entry != null);
+
+ Sidebar.Entry? old_parent = get_parent(entry);
+ assert(old_parent != null);
+
+ reparent(new_parent, entry);
+
+ while (get_child_count(old_parent) == 0 && old_parent != get_root()) {
+ Sidebar.Entry? grandparent = get_parent(old_parent);
+ assert(grandparent != null);
+
+ prune(old_parent);
+
+ old_parent = grandparent;
+ }
+ }
+
+ private void show_no_events(bool show) {
+ if (show && !has_entry(no_event_entry))
+ graft(get_root(), no_event_entry);
+ else if (!show && has_entry(no_event_entry))
+ prune(no_event_entry);
+ }
+}
+
+public abstract class Events.DirectoryEntry : Sidebar.SimplePageEntry, Sidebar.ExpandableEntry {
+ public DirectoryEntry() {
+ }
+
+ public override string? get_sidebar_icon() {
+ return Events.Branch.icon;
+ }
+
+ public bool expand_on_select() {
+ return true;
+ }
+}
+
+public class Events.MasterDirectoryEntry : Events.DirectoryEntry {
+ public MasterDirectoryEntry() {
+ }
+
+ public override string get_sidebar_name() {
+ return MasterEventsDirectoryPage.NAME;
+ }
+
+ public override string? get_sidebar_icon() {
+ return Events.Branch.events_icon;
+ }
+
+ protected override Page create_page() {
+ return new MasterEventsDirectoryPage();
+ }
+}
+
+public class Events.YearDirectoryEntry : Events.DirectoryEntry {
+ private string name;
+ private Time tm;
+
+ public YearDirectoryEntry(string name, Time tm) {
+ this.name = name;
+ this.tm = tm;
+ }
+
+ public override string get_sidebar_name() {
+ return name;
+ }
+
+ public int get_year() {
+ return tm.year + 1900;
+ }
+
+ protected override Page create_page() {
+ return new SubEventsDirectoryPage(SubEventsDirectoryPage.DirectoryType.YEAR, tm);
+ }
+}
+
+public class Events.MonthDirectoryEntry : Events.DirectoryEntry {
+ private string name;
+ private Time tm;
+
+ public MonthDirectoryEntry(string name, Time tm) {
+ this.name = name;
+ this.tm = tm;
+ }
+
+ public override string get_sidebar_name() {
+ return name;
+ }
+
+ public int get_year() {
+ return tm.year + 1900;
+ }
+
+ public int get_month() {
+ return tm.month + 1;
+ }
+
+ protected override Page create_page() {
+ return new SubEventsDirectoryPage(SubEventsDirectoryPage.DirectoryType.MONTH, tm);
+ }
+}
+
+public class Events.UndatedDirectoryEntry : Events.DirectoryEntry {
+ public UndatedDirectoryEntry() {
+ }
+
+ public override string get_sidebar_name() {
+ return SubEventsDirectoryPage.UNDATED_PAGE_NAME;
+ }
+
+ protected override Page create_page() {
+ return new SubEventsDirectoryPage(SubEventsDirectoryPage.DirectoryType.UNDATED,
+ Time.local(0));
+ }
+}
+
+public class Events.EventEntry : Sidebar.SimplePageEntry, Sidebar.RenameableEntry,
+ Sidebar.InternalDropTargetEntry {
+ private Event event;
+
+ public EventEntry(Event event) {
+ this.event = event;
+ }
+
+ public Event get_event() {
+ return event;
+ }
+
+ public override string get_sidebar_name() {
+ return event.get_name();
+ }
+
+ public override string? get_sidebar_icon() {
+ return Events.Branch.single_event_icon;
+ }
+
+ protected override Page create_page() {
+ return new EventPage(event);
+ }
+
+ public bool is_user_renameable() {
+ return true;
+ }
+
+ public void rename(string new_name) {
+ string? prepped = Event.prep_event_name(new_name);
+ if (prepped != null)
+ AppWindow.get_command_manager().execute(new RenameEventCommand(event, prepped));
+ }
+
+ public bool internal_drop_received(Gee.List<MediaSource> media) {
+ // ugh ... some early Commands expected DataViews instead of DataSources (to make life
+ // easier for Pages) and this is one of the prices paid for that
+ Gee.ArrayList<DataView> views = new Gee.ArrayList<DataView>();
+ foreach (MediaSource media_source in media)
+ views.add(new DataView(media_source));
+
+ AppWindow.get_command_manager().execute(new SetEventCommand(views, event));
+
+ return true;
+ }
+
+ public bool internal_drop_received_arbitrary(Gtk.SelectionData data) {
+ return false;
+ }
+}
+
+
+public class Events.NoEventEntry : Sidebar.SimplePageEntry {
+ public NoEventEntry() {
+ }
+
+ public override string get_sidebar_name() {
+ return NoEventPage.NAME;
+ }
+
+ public override string? get_sidebar_icon() {
+ return Events.Branch.no_event_icon;
+ }
+
+ protected override Page create_page() {
+ return new NoEventPage();
+ }
+}
+