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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 ImportQueuePage : SinglePhotoPage {
public const string NAME = _("Importing…");
private Gee.ArrayList<BatchImport> queue = new Gee.ArrayList<BatchImport>();
private Gee.HashSet<BatchImport> cancel_unallowed = new Gee.HashSet<BatchImport>();
private BatchImport current_batch = null;
private Gtk.ProgressBar progress_bar = new Gtk.ProgressBar();
private bool stopped = false;
#if UNITY_SUPPORT
UnityProgressBar uniprobar = UnityProgressBar.get_instance();
#endif
public signal void batch_added(BatchImport batch_import);
public signal void batch_removed(BatchImport batch_import);
public ImportQueuePage() {
base (NAME, false);
// Set up toolbar
Gtk.Toolbar toolbar = get_toolbar();
// Stop button
Gtk.ToolButton stop_button = new Gtk.ToolButton(null, null);
stop_button.set_icon_name("stop");
stop_button.set_action_name ("win.Stop");
toolbar.insert(stop_button, -1);
// separator to force progress bar to right side of toolbar
Gtk.SeparatorToolItem separator = new Gtk.SeparatorToolItem();
separator.set_draw(false);
toolbar.insert(separator, -1);
// Progress bar
Gtk.ToolItem progress_item = new Gtk.ToolItem();
progress_item.set_expand(true);
progress_item.add(progress_bar);
progress_bar.set_show_text(true);
toolbar.insert(progress_item, -1);
#if UNITY_SUPPORT
//UnityProgressBar: try to draw progress bar
uniprobar.set_visible(true);
#endif
}
protected override void init_collect_ui_filenames(Gee.List<string> ui_filenames) {
ui_filenames.add("import_queue.ui");
base.init_collect_ui_filenames(ui_filenames);
}
private const GLib.ActionEntry[] entries = {
{"Stop", on_stop }
};
protected override void add_actions (GLib.ActionMap map) {
base.add_actions(map);
map.add_action_entries(entries, this);
}
protected override void remove_actions(GLib.ActionMap map) {
base.remove_actions(map);
foreach (var entry in entries) {
map.remove_action(entry.name);
}
}
public void enqueue_and_schedule(BatchImport batch_import, bool allow_user_cancel) {
assert(!queue.contains(batch_import));
batch_import.starting.connect(on_starting);
batch_import.preparing.connect(on_preparing);
batch_import.progress.connect(on_progress);
batch_import.imported.connect(on_imported);
batch_import.import_complete.connect(on_import_complete);
batch_import.fatal_error.connect(on_fatal_error);
if (!allow_user_cancel)
cancel_unallowed.add(batch_import);
queue.add(batch_import);
batch_added(batch_import);
if (queue.size == 1)
batch_import.schedule();
update_stop_action();
}
public int get_batch_count() {
return queue.size;
}
private void update_stop_action() {
set_action_sensitive("Stop", !cancel_unallowed.contains(current_batch) && queue.size > 0);
}
private void on_stop() {
update_stop_action();
if (queue.size == 0)
return;
AppWindow.get_instance().set_busy_cursor();
stopped = true;
// mark all as halted and let each signal failure
foreach (BatchImport batch_import in queue)
batch_import.user_halt();
}
private void on_starting(BatchImport batch_import) {
update_stop_action();
current_batch = batch_import;
}
private void on_preparing() {
progress_bar.set_text(_("Preparing to import…"));
progress_bar.pulse();
}
private void on_progress(uint64 completed_bytes, uint64 total_bytes) {
double pct = (completed_bytes <= total_bytes) ? (double) completed_bytes / (double) total_bytes
: 0.0;
progress_bar.set_fraction(pct);
#if UNITY_SUPPORT
//UnityProgressBar: set progress
uniprobar.set_progress(pct);
#endif
}
private void on_imported(ThumbnailSource source, Gdk.Pixbuf pixbuf, int to_follow) {
// only interested in updating the display for the last of the bunch
if (to_follow > 0 || !is_in_view())
return;
set_pixbuf(pixbuf, Dimensions.for_pixbuf(pixbuf));
// set the singleton collection to this item
get_view().clear();
(source is LibraryPhoto) ? get_view().add(new PhotoView(source as LibraryPhoto)) :
get_view().add(new VideoView(source as Video));
progress_bar.set_ellipsize(Pango.EllipsizeMode.MIDDLE);
progress_bar.set_text(_("Imported %s").printf(source.get_name()));
}
private void on_import_complete(BatchImport batch_import, ImportManifest manifest,
BatchImportRoll import_roll) {
assert(batch_import == current_batch);
current_batch = null;
assert(queue.size > 0);
assert(queue.get(0) == batch_import);
bool removed = queue.remove(batch_import);
assert(removed);
// fail quietly if cancel was allowed
cancel_unallowed.remove(batch_import);
// strip signal handlers
batch_import.starting.disconnect(on_starting);
batch_import.preparing.disconnect(on_preparing);
batch_import.progress.disconnect(on_progress);
batch_import.imported.disconnect(on_imported);
batch_import.import_complete.disconnect(on_import_complete);
batch_import.fatal_error.disconnect(on_fatal_error);
// schedule next if available
if (queue.size > 0) {
queue.get(0).schedule();
} else {
// reset UI
progress_bar.set_ellipsize(Pango.EllipsizeMode.NONE);
progress_bar.set_text("");
progress_bar.set_fraction(0.0);
#if UNITY_SUPPORT
//UnityProgressBar: reset
uniprobar.reset();
#endif
// blank the display
blank_display();
// reset cursor if cancelled
if (stopped)
AppWindow.get_instance().set_normal_cursor();
stopped = false;
}
update_stop_action();
// report the batch has been removed from the queue after everything else is set
batch_removed(batch_import);
}
private void on_fatal_error(ImportResult result, string message) {
AppWindow.error_message(message);
}
}
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