From 5ef40fa6bc137a022d8bf2d8a54268c1475f04ff Mon Sep 17 00:00:00 2001
From: SkyratBot <59378654+SkyratBot@users.noreply.github.com>
Date: Sun, 19 Dec 2021 23:17:52 +0100
Subject: [PATCH] Fixes list input submit button not working. (#10146)

Co-authored-by: AnturK <AnturK@users.noreply.github.com>
---
 .../tgui/interfaces/ListInputModal.tsx        | 210 ++++++++++++++++++
 1 file changed, 210 insertions(+)
 create mode 100644 tgui/packages/tgui/interfaces/ListInputModal.tsx

diff --git a/tgui/packages/tgui/interfaces/ListInputModal.tsx b/tgui/packages/tgui/interfaces/ListInputModal.tsx
new file mode 100644
index 00000000000..5a758a52d64
--- /dev/null
+++ b/tgui/packages/tgui/interfaces/ListInputModal.tsx
@@ -0,0 +1,210 @@
+import { Loader } from './common/Loader';
+import { InputButtons, Preferences, Validator } from './common/InputButtons';
+import { Button, Input, Section, Stack } from '../components';
+import { KEY_ENTER, KEY_DOWN, KEY_UP, KEY_ESCAPE } from '../../common/keycodes';
+import { Window } from '../layouts';
+import { useBackend, useLocalState } from '../backend';
+
+type ListInputData = {
+  items: string[];
+  message: string;
+  preferences: Preferences;
+  timeout: number;
+  title: string;
+};
+
+export const ListInputModal = (_, context) => {
+  const { act, data } = useBackend<ListInputData>(context);
+  const { items = [], message, preferences, timeout, title } = data;
+  const { large_buttons } = preferences;
+  const [selected, setSelected] = useLocalState<number | null>(
+    context,
+    'selected',
+    0
+  );
+  const [searchBarVisible, setSearchBarVisible] = useLocalState<boolean>(
+    context,
+    'searchBarVisible',
+    items.length > 9
+  );
+  const [searchQuery, setSearchQuery] = useLocalState<string>(
+    context,
+    'searchQuery',
+    ''
+  );
+  const [inputIsValid, setInputIsValid] = useLocalState<Validator>(
+    context,
+    'inputIsValid',
+    { isValid: true, error: null }
+  );
+  // User presses up or down on keyboard
+  // Simulates clicking an item
+  const onArrowKey = (key: number) => {
+    const len = filteredItems.length - 1;
+    if (key === KEY_DOWN) {
+      if (selected === null || selected === len) {
+        onClick(0);
+      } else {
+        onClick(selected + 1);
+      }
+    } else if (key === KEY_UP) {
+      if (selected === null || selected === 0) {
+        onClick(len);
+      } else {
+        onClick(selected - 1);
+      }
+    }
+  };
+  // User selects an item with mouse
+  const onClick = (index: number) => {
+    if (isNaN(index) || index === selected) {
+      setInputIsValid({ isValid: false, error: 'No selection' });
+      setSelected(null);
+    } else {
+      setInputIsValid({ isValid: true, error: null });
+      setSelected(index);
+      document!.getElementById(index.toString())?.focus();
+    }
+  };
+  // User doesn't have search bar visible & presses a key
+  const onLetterKey = (key: number) => {
+    const keyChar = String.fromCharCode(key);
+    const foundItem = items.find((item) => {
+      return item?.toLowerCase().startsWith(keyChar?.toLowerCase());
+    });
+    if (foundItem) {
+      setSelected(filteredItems.indexOf(foundItem));
+      document!.getElementById(filteredItems
+        .indexOf(foundItem)
+        .toString())?.focus();
+    }
+  };
+  // User types into search bar
+  const onSearch = (query: string) => {
+    setSearchQuery(query);
+  };
+  // User presses the search button
+  const onSearchBarToggle = () => {
+    setSearchBarVisible(!searchBarVisible);
+    setSearchQuery('');
+  };
+  const filteredItems = items.filter((item) =>
+    item?.toLowerCase().includes(searchQuery.toLowerCase())
+  );
+  // Dynamically changes the window height based on the message.
+  const windowHeight
+    = 325 + Math.ceil(message?.length / 3) + (large_buttons ? 5 : 0);
+
+  return (
+    <Window title={title} width={325} height={windowHeight}>
+      {timeout && <Loader value={timeout} />}
+      <Window.Content
+        onKeyDown={(event) => {
+          const keyCode = window.event ? event.which : event.keyCode;
+          if (keyCode === KEY_DOWN || keyCode === KEY_UP) {
+            event.preventDefault();
+            onArrowKey(keyCode);
+          }
+          if (!searchBarVisible && keyCode >= 65 && keyCode <= 90) {
+            event.preventDefault();
+            onLetterKey(keyCode);
+          }
+          if (keyCode === KEY_ESCAPE) {
+            event.preventDefault();
+            act('cancel');
+          }
+        }}>
+        <Section
+          buttons={
+            <Button
+              compact
+              icon="search"
+              color="transparent"
+              selected={searchBarVisible}
+              tooltip="Search Bar"
+              tooltipPosition="left"
+              onClick={() => onSearchBarToggle()}
+            />
+          }
+          className="ListInput__Section"
+          fill
+          title={message}>
+          <Stack fill vertical>
+            <Stack.Item grow>
+              <ListDisplay
+                filteredItems={filteredItems}
+                onClick={onClick}
+                isValid={inputIsValid.isValid}
+                selected={selected}
+              />
+            </Stack.Item>
+            {searchBarVisible && <SearchBar onSearch={onSearch} />}
+            <Stack.Item pl={!large_buttons && 4} pr={!large_buttons && 4}>
+              <InputButtons
+                input={selected !== null ? filteredItems[selected] : null}
+                inputIsValid={inputIsValid} />
+            </Stack.Item>
+          </Stack>
+        </Section>
+      </Window.Content>
+    </Window>
+  );
+};
+
+/**
+ * Displays the list of selectable items.
+ * If a search query is provided, filters the items.
+ */
+const ListDisplay = (props, context) => {
+  const { act } = useBackend<ListInputData>(context);
+  const { filteredItems, isValid, onClick, selected } = props;
+
+  return (
+    <Section fill scrollable tabIndex={0}>
+      {filteredItems.map((item, index) => {
+        return (
+          <Button
+            color="transparent"
+            fluid
+            id={index}
+            key={index}
+            onClick={() => onClick(index)}
+            onKeyDown={(event) => {
+              const keyCode = window.event ? event.which : event.keyCode;
+              if (keyCode === KEY_ENTER && isValid) {
+                event.preventDefault();
+                act('submit', { entry: filteredItems[selected] });
+              }
+            }}
+            selected={index === selected}
+            style={{
+              'animation': 'none',
+              'transition': 'none',
+            }}>
+            {item.replace(/^\w/, (c) => c.toUpperCase())}
+          </Button>
+        );
+      })}
+    </Section>
+  );
+};
+
+/**
+ * Renders a search bar input.
+ * Closing the bar defaults input to an empty string.
+ */
+const SearchBar = (props) => {
+  const { onSearch, searchQuery } = props;
+
+  return (
+    <Input
+      autoFocus
+      fluid
+      onInput={(_, value) => {
+        onSearch(value);
+      }}
+      placeholder="Search..."
+      value={searchQuery}
+    />
+  );
+};