Add controlled list of todo status

src/enums/MDTodoStatus.php

@@ -0,0 +1,105 @@
+<?PHP
+/**
+ * Represents a possible status for to-dos.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Represents a possible status for to-dos.
+ */
+enum MDTodoStatus implements MDValueEnumInterface, JsonSerializable {
+
+    case suggested;
+    case planned;
+    case in_progress;
+    case done;
+    case cancelled;
+
+    /**
+     * Returns a value of this type based on a string.
+     *
+     * @param string $input Input to get a value from.
+     *
+     * @return MDTodoStatus
+     */
+    public static function fromString(string $input):MDTodoStatus {
+
+        return match($input) {
+            'suggested' => self::suggested,
+            'planned' => self::planned,
+            'in_progress' => self::in_progress,
+            'done' => self::done,
+            'cancelled' => self::cancelled,
+            default => throw new MDpageParameterNotFromListException("Unknown todo status"),
+        };
+
+    }
+
+    /**
+     * Lists all available names.
+     *
+     * @return array<string>
+     */
+    public static function caseNames():array {
+
+        $output = [];
+
+        $cases = self::cases();
+        foreach ($cases as $case) {
+            $output[] = $case->name;
+        }
+
+        return $output;
+
+    }
+
+    /**
+     * Gets an unsorted list of the entries in a translated version.
+     *
+     * @param MDTlLoader $tlLoader Translation loader.
+     *
+     * @return array<string>
+     */
+    public static function getUnsortedList(MDTlLoader $tlLoader):array {
+        return MDValueSet::getTlUnsortedList($tlLoader, self::caseNames(), "todo_status", "todo_status");
+
+    }
+
+    /**
+     * Gets a sorted list of the entries in a translated version.
+     *
+     * @param MDTlLoader $tlLoader Translation loader.
+     *
+     * @return array<string>
+     */
+    public static function getSortedList(MDTlLoader $tlLoader):array {
+        return MDValueSet::getTlSortedList($tlLoader, self::caseNames(), "todo_status", "todo_status");
+
+    }
+
+    /**
+     * Returns the name of the current value in translation.
+     *
+     * @param MDTlLoader $tlLoader Translation loader.
+     *
+     * @return string
+     */
+    public function getTledName(MDTlLoader $tlLoader):string {
+
+        return $tlLoader->tl("todo_status", "todo_status", $this->name);
+
+    }
+
+    /**
+     * Provides the option to serialize as a string during json_encode().
+     *
+     * @return string
+     */
+    public function jsonSerialize():string {
+
+        return $this->name;
+
+    }
+}