From 5a074b5bb68c675c484a7b693f67a67488be9bcf Mon Sep 17 00:00:00 2001
From: Travis Lane <63308171+Tormak9970@users.noreply.github.com>
Date: Tue, 21 Feb 2023 22:37:26 -0500
Subject: [PATCH] feat: added reorderable list and updated fieldProps (#57)

---
 src/custom-components/ReorderableList.tsx | 174 ++++++++++++++++++++++
 src/custom-components/index.ts            |   1 +
 2 files changed, 175 insertions(+)
 create mode 100644 src/custom-components/ReorderableList.tsx

diff --git a/src/custom-components/ReorderableList.tsx b/src/custom-components/ReorderableList.tsx
new file mode 100644
index 0000000..06eb023
--- /dev/null
+++ b/src/custom-components/ReorderableList.tsx
@@ -0,0 +1,174 @@
+import { Fragment, JSXElementConstructor, ReactElement, useEffect, useState } from 'react';
+
+import { Field, FieldProps, Focusable, GamepadButton } from '../deck-components';
+
+/**
+ * A ReorderableList entry of type <T>.
+ * @param label The name of this entry in the list.
+ * @param data Optional data to connect to this entry.
+ * @param position The position of this entry in the list.
+ */
+export type ReorderableEntry<T> = {
+  label: string;
+  data?: T;
+  position: number;
+};
+
+/**
+ * Properties for a ReorderableList component of type <T>.
+ *
+ * @param animate If the list should animate. @default true
+ */
+export type ReorderableListProps<T> = {
+  entries: ReorderableEntry<T>[];
+  onSave: (entries: ReorderableEntry<T>[]) => void;
+  interactables?: JSXElementConstructor<{ entry: ReorderableEntry<T> }>;
+  fieldProps?: FieldProps;
+  animate?: boolean;
+};
+
+/**
+ * A component for creating reorderable lists.
+ *
+ * See an example implementation {@linkplain https://github.com/Tormak9970/Component-Testing-Plugin/blob/main/src/testing-window/ReorderableListTest.tsx here}.
+ */
+export function ReorderableList<T>(props: ReorderableListProps<T>) {
+  if (props.animate === undefined) props.animate = true;
+  const [entryList, setEntryList] = useState<ReorderableEntry<T>[]>(
+    props.entries.sort((a: ReorderableEntry<T>, b: ReorderableEntry<T>) => a.position - b.position),
+  );
+  const [reorderEnabled, setReorderEnabled] = useState<boolean>(false);
+
+  useEffect(() => {
+    setEntryList(props.entries.sort((a: ReorderableEntry<T>, b: ReorderableEntry<T>) => a.position - b.position));
+  }, [props.entries]);
+
+  function toggleReorderEnabled(): void {
+    let newReorderValue = !reorderEnabled;
+    setReorderEnabled(newReorderValue);
+
+    if (!newReorderValue) {
+      props.onSave(entryList);
+    }
+  }
+
+  return (
+    <Fragment>
+      <div
+        style={{
+          width: 'inherit',
+          height: 'inherit',
+          flex: '1 1 1px',
+          scrollPadding: '48px 0px',
+          display: 'flex',
+          flexDirection: 'column',
+          justifyContent: 'flex-start',
+          alignContent: 'stretch',
+        }}
+      >
+        <Focusable
+          onSecondaryButton={toggleReorderEnabled}
+          onSecondaryActionDescription={reorderEnabled ? 'Save Order' : 'Reorder'}
+          onClick={toggleReorderEnabled}
+        >
+          {entryList.map((entry: ReorderableEntry<T>) => (
+            <ReorderableItem
+              animate={props.animate!}
+              listData={entryList}
+              entryData={entry}
+              reorderEntryFunc={setEntryList}
+              reorderEnabled={reorderEnabled}
+              fieldProps={props.fieldProps}
+            >
+              {props.interactables ? <props.interactables entry={entry} /> : null}
+            </ReorderableItem>
+          ))}
+        </Focusable>
+      </div>
+    </Fragment>
+  );
+}
+
+/**
+ * Properties for a ReorderableItem component of type <T>
+ */
+export type ReorderableListEntryProps<T> = {
+  fieldProps?: FieldProps;
+  listData: ReorderableEntry<T>[];
+  entryData: ReorderableEntry<T>;
+  reorderEntryFunc: CallableFunction;
+  reorderEnabled: boolean;
+  animate: boolean;
+  children: ReactElement | null;
+};
+
+function ReorderableItem<T>(props: ReorderableListEntryProps<T>) {
+  const [isSelected, _setIsSelected] = useState<boolean>(false);
+  const [isSelectedLastFrame, setIsSelectedLastFrame] = useState<boolean>(false);
+  const listEntries = props.listData;
+
+  function onReorder(e: Event): void {
+    if (!props.reorderEnabled) return;
+
+    const event = e as CustomEvent;
+    const currentIdx = listEntries.findIndex((entryData: ReorderableEntry<T>) => entryData === props.entryData);
+    const currentIdxValue = listEntries[currentIdx];
+    if (currentIdx < 0) return;
+
+    let targetPosition: number = -1;
+    if (event.detail.button == GamepadButton.DIR_DOWN) {
+      targetPosition = currentIdxValue.position + 1;
+    } else if (event.detail.button == GamepadButton.DIR_UP) {
+      targetPosition = currentIdxValue.position - 1;
+    }
+
+    if (targetPosition >= listEntries.length || targetPosition < 0) return;
+
+    let otherToUpdate = listEntries.find((entryData: ReorderableEntry<T>) => entryData.position === targetPosition);
+    if (!otherToUpdate) return;
+
+    let currentPosition = currentIdxValue.position;
+
+    currentIdxValue.position = otherToUpdate.position;
+    otherToUpdate.position = currentPosition;
+
+    props.reorderEntryFunc(
+      [...listEntries].sort((a: ReorderableEntry<T>, b: ReorderableEntry<T>) => a.position - b.position),
+    );
+  }
+
+  async function setIsSelected(val: boolean) {
+    _setIsSelected(val);
+    // Wait 3 frames, then set. I have no idea why, but if you dont wait long enough it doesn't work.
+    for (let i = 0; i < 3; i++) await new Promise((res) => requestAnimationFrame(res));
+    setIsSelectedLastFrame(val);
+  }
+
+  return (
+    <div
+      style={
+        props.animate
+          ? {
+              transition:
+                isSelected || isSelectedLastFrame
+                  ? ''
+                  : 'transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s cubic-bezier(0.25, 1, 0.5, 1)', // easeOutQuart https://easings.net/#easeOutQuart
+              transform: !props.reorderEnabled || isSelected ? 'scale(1)' : 'scale(0.9)',
+              opacity: !props.reorderEnabled || isSelected ? 1 : 0.7,
+            }
+          : {}
+      }
+    >
+      <Field
+        label={props.entryData.label}
+        {...props.fieldProps}
+        focusable={!props.children}
+        onButtonDown={onReorder}
+        onGamepadBlur={() => setIsSelected(false)}
+        onGamepadFocus={() => setIsSelected(true)}
+      >
+        <Focusable style={{ display: 'flex', width: '100%', position: 'relative' }}>{props.children}</Focusable>
+      </Field>
+    </div>
+  );
+}
diff --git a/src/custom-components/index.ts b/src/custom-components/index.ts
index 7035898..94d0a7b 100644
--- a/src/custom-components/index.ts
+++ b/src/custom-components/index.ts
@@ -1,2 +1,3 @@
 export * from './SuspensefulImage';
 export * from './ColorPickerModal';
+export * from './ReorderableList';