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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-07-23 09:06:59 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-07-23 09:06:59 +0200
commit4ea2cc3bd4a7d9b1c54a9d33e6a1cf82e7c8c21d (patch)
treed2e54377d14d604356c86862a326f64ae64dadd6 /src/Upgrades.vala
Imported Upstream version 0.18.1upstream/0.18.1
Diffstat (limited to 'src/Upgrades.vala')
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1 files changed, 115 insertions, 0 deletions
diff --git a/src/Upgrades.vala b/src/Upgrades.vala
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+/* Copyright 2011-2014 Yorba Foundation
+ *
+ * This software is licensed under the GNU LGPL (version 2.1 or later).
+ * See the COPYING file in this distribution.
+ */
+
+// Class for aggregating one-off "upgrade" tasks that occur at startup, such as
+// moving or deleting files. This occurs after the UI is shown, so it's not appropriate
+// for database updates and such.
+public class Upgrades {
+ private static Upgrades? instance = null;
+ private uint64 total_steps = 0;
+ private Gee.LinkedList<UpgradeTask> task_list = new Gee.LinkedList<UpgradeTask>();
+
+ private Upgrades() {
+ // Add all upgrade tasks here.
+ add(new MimicsRemovalTask());
+
+ if (Application.get_instance().get_raw_thumbs_fix_required())
+ add(new FixupRawThumbnailsTask());
+ }
+
+ // Call this to initialize the subsystem.
+ public static void init() {
+ assert(instance == null);
+ instance = new Upgrades();
+ }
+
+ public static Upgrades get_instance() {
+ return instance;
+ }
+
+ // Gets the total number of steps for the progress monitor.
+ public uint64 get_step_count() {
+ return total_steps;
+ }
+
+ // Performs all upgrade tasks.
+ public void execute(ProgressMonitor? monitor = null) {
+ foreach (UpgradeTask task in task_list)
+ task.execute(monitor);
+ }
+
+ private void add(UpgradeTask task) {
+ total_steps += task.get_step_count();
+ task_list.add(task);
+ }
+}
+
+// Interface for upgrades that happen on startup.
+// When creating a new upgrade task, you MUST add it to the constructor
+// supplied in Upgrades (see above.)
+private interface UpgradeTask : Object{
+ // Returns the number of steps involved in the ugprade.
+ public abstract uint64 get_step_count();
+
+ // Performs the upgrade. Note that when using the progress
+ // monitor, the total number of steps must be equal to the
+ // step count above.
+ public abstract void execute(ProgressMonitor? monitor = null);
+}
+
+// Deletes the mimics folder, if it still exists.
+// Note: for the step count to be consistent, files cannot be written
+// to the mimcs folder for the durration of this task.
+private class MimicsRemovalTask : Object, UpgradeTask {
+ // Mimics folder (to be deleted, if present)
+ private File mimic_dir = AppDirs.get_data_dir().get_child("mimics");
+ private uint64 num_mimics = 0;
+
+ public uint64 get_step_count() {
+ try {
+ num_mimics = count_files_in_directory(mimic_dir);
+ } catch (Error e) {
+ debug("Error on deleting mimics: %s", e.message);
+ }
+ return num_mimics;
+ }
+
+ public void execute(ProgressMonitor? monitor = null) {
+ try {
+ delete_all_files(mimic_dir, null, monitor, num_mimics, null);
+ mimic_dir.delete();
+ } catch (Error e) {
+ debug("Could not delete mimics: %s", e.message);
+ }
+ }
+}
+
+// Deletes 'stale' thumbnails from camera raw files whose default developer was
+// CAMERA and who may have been incorrectly generated from the embedded preview by
+// previous versions of the application that had bug 4692.
+private class FixupRawThumbnailsTask : Object, UpgradeTask {
+ public uint64 get_step_count() {
+ int num_raw_files = 0;
+
+ foreach (PhotoRow phr in PhotoTable.get_instance().get_all()) {
+ if (phr.master.file_format == PhotoFileFormat.RAW)
+ num_raw_files++;
+ }
+ return num_raw_files;
+ }
+
+ public void execute(ProgressMonitor? monitor = null) {
+ debug("Executing thumbnail deletion and fixup");
+
+ foreach (PhotoRow phr in PhotoTable.get_instance().get_all()) {
+ if ((phr.master.file_format == PhotoFileFormat.RAW) &&
+ (phr.developer == RawDeveloper.CAMERA)) {
+ ThumbnailCache.remove(LibraryPhoto.global.fetch(phr.photo_id));
+ }
+ }
+ }
+}
+