Make it possible to pass a provider to tasks() and batchItems()

Author: Myaamori

src/main/kotlin/myaa/subkt/tasks/plugin.kt

@@ -393,10 +393,20 @@ open class Subs(val project: Project) : ItemGroupContext() {
     /**
      * Creates a context for generating tasks for the specified entries.
      *
+     * @param entries A list of entries to generate tasks for.
      * @param action A closure operating on a [ItemGroupContext] entry.
      */
-    fun tasks(episodes: Iterable<String>, action: ItemGroupContext.() -> Unit) =
-            InnerContext(episodes).action()
+    fun tasks(entries: Iterable<String>, action: ItemGroupContext.() -> Unit) =
+            InnerContext(entries).action()
+
+    /**
+     * Creates a context for generating tasks for the specified entries.
+     *
+     * @param entries A provider for a list of entries to generate tasks for.
+     * @param action A closure operating on a [ItemGroupContext] entry.
+     */
+    fun tasks(entries: Provider<out Iterable<String>>, action: ItemGroupContext.() -> Unit) =
+            InnerContext(entries).action()
 
     private val engine = VelocityEngine().also {
         val p = Properties()

src/main/kotlin/myaa/subkt/tasks/tasks.kt

@@ -274,10 +274,20 @@ abstract class ItemGroup<T>(
     /**
      * Get all items corresponding to the specified entries.
      *
+     * @param entries A list of entries to get the items for.
      * @sample myaa.subkt.tasks.samples.itemGroupItemsSample1
      */
     fun batchItems(entries: Iterable<String>) = entries.map { items.getValue(it) }
 
+    /**
+     * Get all items corresponding to the specified entries.
+     *
+     * @param entries A provider for a list of entries to get the items for.
+     * @sample myaa.subkt.tasks.samples.itemGroupItemsSample1
+     */
+    fun batchItems(entries: Provider<out Iterable<String>>) =
+            entries.get().map { items.getValue(it) }
+
     /**
      * Get all items corresponding to the episodes of the given task.
      *