Add manga straight into a category from catalogues (#737)

* Add feature mention in issue #625

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsGeneralFragment.kt

@@ -7,6 +7,7 @@ import android.support.v7.preference.XpPreferenceFragment
 import android.view.View
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.DatabaseHelper
+import eu.kanade.tachiyomi.data.database.models.Category
 import eu.kanade.tachiyomi.data.library.LibraryUpdateJob
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.util.LocaleHelper
@@ -46,6 +47,8 @@ class SettingsGeneralFragment : SettingsFragment(),
 
     val categoryUpdate: MultiSelectListPreference by bindPref(R.string.pref_library_update_categories_key)
 
+    val defaultCategory: IntListPreference by bindPref(R.string.default_category_key)
+
     val langPreference: ListPreference by bindPref(R.string.pref_language_key)
 
     override fun onViewCreated(view: View, savedState: Bundle?) {
@@ -100,6 +103,22 @@ class SettingsGeneralFragment : SettingsFragment(),
                     categoryUpdate.summary = summary
                 }
 
+        defaultCategory.apply {
+            val selectedCategory = dbCategories.find { it.id == preferences.defaultCategory()}
+            value = selectedCategory?.id?.toString() ?: value
+            entries += dbCategories.map { it.name }.toTypedArray()
+            entryValues += dbCategories.map { it.id.toString() }.toTypedArray()
+            summary = selectedCategory?.name ?: summary
+        }
+
+        defaultCategory.setOnPreferenceChangeListener { _, newValue ->
+            defaultCategory.summary = dbCategories.find {
+                it.id == (newValue as String).toInt()
+            }?.name ?: getString(R.string.default_category_summary)
+
+            true
+        }
+
         themePreference.setOnPreferenceChangeListener { preference, newValue ->
             (activity as SettingsActivity).parentFlags = SettingsActivity.FLAG_THEME_CHANGED
             activity.recreate()