Allow to change sorting mode from the chapters fragment

app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.java

@@ -72,6 +72,9 @@ public class Manga implements Serializable {
     public static final int SORT_ZA   = 0x00000001;
     public static final int SORT_MASK = 0x00000001;
 
+    // Generic filter that does not filter anything
+    public static final int SHOW_ALL    = 0x00000000;
+
     public static final int SHOW_UNREAD = 0x00000002;
     public static final int SHOW_READ   = 0x00000004;
     public static final int READ_MASK   = 0x00000006;
@@ -80,8 +83,9 @@ public class Manga implements Serializable {
     public static final int SHOW_NOT_DOWNLOADED = 0x00000010;
     public static final int DOWNLOADED_MASK     = 0x00000018;
 
-    // Generic filter that does not filter anything
-    public static final int SHOW_ALL    = 0x00000000;
+    public static final int SORTING_NUMBER = 0x00000000;
+    public static final int SORTING_SOURCE = 0x00000100;
+    public static final int SORTING_MASK   = 0x00000100;
 
     public static final int DISPLAY_NAME   = 0x00000000;
     public static final int DISPLAY_NUMBER = 0x00100000;
@@ -162,6 +166,10 @@ public class Manga implements Serializable {
         setFlags(filter, DOWNLOADED_MASK);
     }
 
+    public void setSorting(int sort) {
+        setFlags(sort, SORTING_MASK);
+    }
+
     private void setFlags(int flag, int mask) {
         chapter_flags = (chapter_flags & ~mask) | (flag & mask);
     }
@@ -183,6 +191,10 @@ public class Manga implements Serializable {
         return chapter_flags & DOWNLOADED_MASK;
     }
 
+    public int getSorting() {
+        return chapter_flags & SORTING_MASK;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersFragment.kt

@@ -124,6 +124,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
         when (item.itemId) {
             R.id.action_display_mode -> showDisplayModeDialog()
             R.id.manga_download -> showDownloadDialog()
+            R.id.action_sorting_mode -> showSortingDialog()
             R.id.action_filter_unread -> {
                 item.isChecked = !item.isChecked
                 presenter.setReadFilter(item.isChecked)
@@ -135,7 +136,7 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
             R.id.action_filter_empty -> {
                 presenter.setReadFilter(false)
                 presenter.setDownloadedFilter(false)
-                activity.supportInvalidateOptionsMenu();
+                activity.supportInvalidateOptionsMenu()
             }
             R.id.action_sort -> presenter.revertSortOrder()
             else -> return super.onOptionsItemSelected(item)
@@ -192,15 +193,14 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
     }
 
     private fun showDisplayModeDialog() {
-
         // Get available modes, ids and the selected mode
-        val modes = listOf(getString(R.string.show_title), getString(R.string.show_chapter_number))
+        val modes = intArrayOf(R.string.show_title, R.string.show_chapter_number)
         val ids = intArrayOf(Manga.DISPLAY_NAME, Manga.DISPLAY_NUMBER)
         val selectedIndex = if (presenter.manga.displayMode == Manga.DISPLAY_NAME) 0 else 1
 
         MaterialDialog.Builder(activity)
                 .title(R.string.action_display_mode)
-                .items(modes)
+                .items(modes.map { getString(it) })
                 .itemsIds(ids)
                 .itemsCallbackSingleChoice(selectedIndex) { dialog, itemView, which, text ->
                     // Save the new display mode
@@ -212,6 +212,24 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
                 .show()
     }
 
+    private fun showSortingDialog() {
+        // Get available modes, ids and the selected mode
+        val modes = intArrayOf(R.string.sort_by_number, R.string.sort_by_source)
+        val ids = intArrayOf(Manga.SORTING_NUMBER, Manga.SORTING_SOURCE)
+        val selectedIndex = if (presenter.manga.sorting == Manga.SORTING_NUMBER) 0 else 1
+
+        MaterialDialog.Builder(activity)
+                .title(R.string.sorting_mode)
+                .items(modes.map { getString(it) })
+                .itemsIds(ids)
+                .itemsCallbackSingleChoice(selectedIndex) { dialog, itemView, which, text ->
+                    // Save the new display mode
+                    presenter.setSorting(itemView.id)
+                    true
+                }
+                .show()
+    }
+
     private fun showDownloadDialog() {
         // Get available modes
         val modes = listOf(getString(R.string.download_1), getString(R.string.download_5), getString(R.string.download_10),

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersPresenter.kt

@@ -123,11 +123,22 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         if (onlyDownloaded()) {
             observable = observable.filter { chapter -> chapter.status == Download.DOWNLOADED }
         }
-        return observable.toSortedList { chapter, chapter2 ->
-            if (sortOrder())
-                chapter2.chapter_number.compareTo(chapter.chapter_number)
-            else
-                chapter.chapter_number.compareTo(chapter2.chapter_number)
+        return observable.toSortedList { chapter1, chapter2 ->
+            when (manga.sorting) {
+                Manga.SORTING_NUMBER -> {
+                    if (sortOrder())
+                        chapter2.chapter_number.compareTo(chapter1.chapter_number)
+                    else
+                        chapter1.chapter_number.compareTo(chapter2.chapter_number)
+                }
+                Manga.SORTING_SOURCE -> {
+                    if (sortOrder())
+                        chapter1.source_order.compareTo(chapter2.source_order)
+                    else
+                        chapter2.source_order.compareTo(chapter1.source_order)
+                }
+                else -> throw AssertionError("Unknown sorting method")
+            }
         }
     }
 
@@ -239,6 +250,12 @@ class ChaptersPresenter : BasePresenter<ChaptersFragment>() {
         db.insertManga(manga).executeAsBlocking()
     }
 
+    fun setSorting(mode: Int) {
+        manga.sorting = mode
+        db.insertManga(manga).executeAsBlocking()
+        refreshChapters()
+    }
+
     fun onlyDownloaded(): Boolean {
         return manga.downloadedFilter == Manga.SHOW_DOWNLOADED
     }

app/src/main/res/menu/chapters.xml

@@ -33,6 +33,11 @@
         android:title="@string/action_display_mode"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/action_sorting_mode"
+        android:title="@string/sorting_mode"
+        app:showAsAction="never" />
+
     <item
         android:id="@+id/manga_download"
         android:title="@string/manga_download"

app/src/main/res/values/strings.xml

@@ -225,6 +225,9 @@
     <string name="fetch_chapters_error">Error while fetching chapters</string>
     <string name="show_title">Show title</string>
     <string name="show_chapter_number">Show chapter number</string>
+    <string name="sorting_mode">Sorting mode</string>
+    <string name="sort_by_source">By source</string>
+    <string name="sort_by_number">By chapter number</string>
     <string name="manga_download">Download</string>
     <string name="download_1">Download next chapter</string>
     <string name="download_5">Download next 5 chapters</string>