[Init] Initial commit - NetMesh terminal manager

components/ai/chatInputResize.ts

@@ -0,0 +1,45 @@
+export const CHAT_INPUT_MIN_HEIGHT = 112;
+export const CHAT_INPUT_MAX_HEIGHT = 420;
+export const CHAT_INPUT_DEFAULT_HEIGHT = 128;
+export const CHAT_INPUT_PANEL_RESERVE = 112;
+
+export function resolveChatInputMaxHeight(panelHeight: number): number {
+  return Math.max(
+    CHAT_INPUT_MIN_HEIGHT,
+    Math.min(CHAT_INPUT_MAX_HEIGHT, panelHeight - CHAT_INPUT_PANEL_RESERVE),
+  );
+}
+
+export function resolveVisibleChatInputMaxHeight(panelHeight: number): number | null {
+  if (!Number.isFinite(panelHeight) || panelHeight <= 0) return null;
+  return resolveChatInputMaxHeight(panelHeight);
+}
+
+export function resolveVisibleChatInputHeight(
+  desiredHeight: number | null,
+  maxHeight: number,
+): number | null {
+  return desiredHeight == null ? null : Math.min(desiredHeight, maxHeight);
+}
+
+export function resolveChatInputAriaHeight(
+  height: number | null,
+  maxHeight: number,
+): number {
+  return Math.max(
+    CHAT_INPUT_MIN_HEIGHT,
+    Math.min(maxHeight, height ?? CHAT_INPUT_DEFAULT_HEIGHT),
+  );
+}
+
+export function resolveChatInputResizeHeight(
+  startHeight: number,
+  startPointerY: number,
+  pointerY: number,
+  maxHeight: number,
+): number {
+  return Math.min(
+    maxHeight,
+    Math.max(CHAT_INPUT_MIN_HEIGHT, startHeight + startPointerY - pointerY),
+  );
+}