fix(ios): support mod index networking and text input dismissal

mobile/ios/native/GRPickerBridge.swift

@@ -30,6 +30,45 @@ public final class GRPickerBridge: NSObject {
     // (<sandbox>/Library/Application Support/<identity>).
     private static let loveIdentity = "pokemon-love2d"
 
+    @objc(httpDownloadWithUrl:destination:userAgent:accept:)
+    public static func httpDownload(url: UnsafePointer<CChar>?,
+                                    destination: UnsafePointer<CChar>?,
+                                    userAgent: UnsafePointer<CChar>?,
+                                    accept: UnsafePointer<CChar>?) -> Bool {
+        guard let url, let destination,
+              let requestURL = URL(string: String(cString: url)) else { return false }
+        var request = URLRequest(url: requestURL)
+        request.timeoutInterval = 300
+        if let userAgent, userAgent.pointee != 0 {
+            request.setValue(String(cString: userAgent), forHTTPHeaderField: "User-Agent")
+        }
+        if let accept, accept.pointee != 0 {
+            request.setValue(String(cString: accept), forHTTPHeaderField: "Accept")
+        }
+        let target = URL(fileURLWithPath: String(cString: destination))
+        let semaphore = DispatchSemaphore(value: 0)
+        var succeeded = false
+        let task = URLSession.shared.downloadTask(with: request) { temporary, response, error in
+            defer { semaphore.signal() }
+            guard error == nil, let temporary,
+                  let http = response as? HTTPURLResponse,
+                  (200..<300).contains(http.statusCode) else { return }
+            try? FileManager.default.removeItem(at: target)
+            do {
+                try FileManager.default.moveItem(at: temporary, to: target)
+                succeeded = true
+            } catch {
+                succeeded = false
+            }
+        }
+        task.resume()
+        guard semaphore.wait(timeout: .now() + 305) == .success else {
+            task.cancel()
+            return false
+        }
+        return succeeded
+    }
+
     // MARK: - Entry points called from liblove (C strings on purpose)
 
     @objc(presentPickerWithKind:saveDir:)

mobile/ios/patch_love_src.py

@@ -103,6 +103,7 @@ WRAP_REGISTRATION = """#ifdef LOVE_IOS
 	{ "pickFile", w_pickFile },
 	{ "createFile", w_createFile },
 	{ "syncHealthSteps", w_syncHealthSteps },
+	{ "httpDownload", w_httpDownload },
 #endif
 """
 
@@ -144,6 +145,32 @@ int w_syncHealthSteps(lua_State *L)
 
 WRAP_SYNC_REGISTRATION = """#ifdef LOVE_IOS
 	{ "syncHealthSteps", w_syncHealthSteps },
+	{ "httpDownload", w_httpDownload },
+#endif
+"""
+
+BRIDGE_EXTRA_FUNCS = """
+#ifdef LOVE_IOS
+int w_httpDownload(lua_State *L)
+{
+	const char *url = luaL_checkstring(L, 1);
+	const char *destination = luaL_checkstring(L, 2);
+	const char *userAgent = luaL_optstring(L, 3, "gen1recomp");
+	const char *accept = luaL_optstring(L, 4, "");
+	Class cls = objc_getClass("GRPickerBridge");
+	if (cls == nullptr)
+	{
+		lua_pushboolean(L, 0);
+		return 1;
+	}
+	typedef signed char (*GRDownload)(Class, SEL, const char *, const char *,
+	                                  const char *, const char *);
+	signed char ok = ((GRDownload)objc_msgSend)(
+		cls, sel_registerName("httpDownloadWithUrl:destination:userAgent:accept:"),
+		url, destination, userAgent, accept);
+	lua_pushboolean(L, ok != 0);
+	return 1;
+}
 #endif
 """
 
@@ -216,7 +243,8 @@ def patch_wrap_system():
     if anchor not in text:
         fail(f"anchor not found in {WRAP_SYSTEM}")
     has_native_picker = re.search(r"\bint w_pickFile\s*\(", text) is not None
-    text = text.replace(anchor, (WRAP_SYNC_FUNCS if has_native_picker else WRAP_FUNCS) + anchor, 1)
+    bridge_funcs = WRAP_SYNC_FUNCS if has_native_picker else WRAP_FUNCS
+    text = text.replace(anchor, bridge_funcs + BRIDGE_EXTRA_FUNCS + anchor, 1)
     reg_anchor = '\t{ "vibrate", w_vibrate },\n'
     if reg_anchor not in text:
         fail(f"registration anchor not found in {WRAP_SYSTEM}")
@@ -224,7 +252,7 @@ def patch_wrap_system():
     text = text.replace(reg_anchor, reg_anchor + registration, 1)
     WRAP_SYSTEM.write_text(text)
     print("patch_love_src: wrap_System.cpp patched "
-          "(pickFile/createFile/syncHealthSteps)")
+          "(pickFile/createFile/syncHealthSteps/httpDownload)")
 
 
 def patch_pbxproj():

src/core/HostShell.lua

@@ -148,15 +148,14 @@ function HostShell.haveCurl()
   return readOk and out ~= nil and out:find("curl", 1, true) ~= nil
 end
 
--- The bridge only exists in our Android liblove.  An older APK reports nil
+-- An older mobile build reports nil here and falls back to the "no transport"
--- here and falls back to the "no transport" error the callers already show;
+-- error the callers already show.
--- the iOS build compiles the same wrapper but always returns false, so gate
--- on the OS as well and keep its error message honest.
 local function haveBridge()
   if not (love and love.system and type(love.system.httpDownload) == "function") then
     return false
   end
-  return love.system.getOS and love.system.getOS() == "Android"
+  local osName = love.system.getOS and love.system.getOS()
+  return osName == "Android" or osName == "iOS"
 end
 
 -- Is any transport available at all?  Callers gate on this, never on curl.

src/import/LauncherView.lua

@@ -1214,8 +1214,7 @@ local function buildFindPanel(imp, parent, m)
     imp.findQuery or "", Strings("Search mods"),
     imp._findSearchFocus == true,
     function()
-      imp._findSearchFocus = true
+      imp:_toggleFindSearchFocus()
-      imp:_armTextInput()
     end)
 
   local cats = (imp.findIndex and imp.findIndex.categories) or {}

src/import/RomImporter.lua

@@ -1733,6 +1733,15 @@ function RomImporter:_switchTab(id)
   self:_disarmTextInput()
 end
 
+function RomImporter:_toggleFindSearchFocus()
+  self._findSearchFocus = not self._findSearchFocus
+  if self._findSearchFocus then
+    self:_armTextInput()
+  else
+    self:_disarmTextInput()
+  end
+end
+
 -- ------- settings gear (options.lua + enabled mods' option schemas)
 
 function RomImporter:_openSettings()

tests/engine/launcher_text_input_bug578.lua

@@ -133,6 +133,13 @@ check(ri._findSearchFocus == false, "a tab change drops the caret")
 eq(lastArm(), false, "and disarms setTextInput")
 ri.tab = "find"
 
+ri:_toggleFindSearchFocus()
+check(ri._findSearchFocus == true, "tapping the search field focuses it")
+eq(lastArm(), true, "refocusing the search field arms setTextInput")
+ri:_toggleFindSearchFocus()
+check(ri._findSearchFocus == false, "tapping the focused search field blurs it")
+eq(lastArm(), false, "blurring the search field disarms setTextInput")
+
 -- ---- desktop contract (#529): disarm never lowers off Android -------------
 
 ri.android = false