From c58142ac4897e0b69408635d7a5bf32691e2302d Mon Sep 17 00:00:00 2001
From: Arc-blroth <45273859+Arc-blroth@users.noreply.github.com>
Date: Fri, 26 Aug 2022 20:03:19 -0700
Subject: [PATCH] implement sync_ipc_handler for Linux

---
 Cargo.toml                   |  2 +-
 src/webview/webkitgtk/mod.rs | 29 +++++++++++++++++++++++++----
 2 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index a89231635..596331f21 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,7 +49,7 @@ tempfile = "3.3.0"
 http-range = "0.1.5"
 
 [target."cfg(any(target_os = \"linux\", target_os = \"dragonfly\", target_os = \"freebsd\", target_os = \"openbsd\", target_os = \"netbsd\"))".dependencies]
-webkit2gtk = { version = "0.18", features = [ "v2_22" ] }
+webkit2gtk = { version = "0.18", features = [ "v2_24" ] }
 webkit2gtk-sys = "0.18"
 gio = "0.15"
 glib = "0.15"
diff --git a/src/webview/webkitgtk/mod.rs b/src/webview/webkitgtk/mod.rs
index c6baebd19..ac1dfb623 100644
--- a/src/webview/webkitgtk/mod.rs
+++ b/src/webview/webkitgtk/mod.rs
@@ -18,8 +18,8 @@ use gio::Cancellable;
 use glib::signal::Inhibit;
 use gtk::prelude::*;
 use webkit2gtk::{
-  traits::*, NavigationPolicyDecision, PolicyDecisionType, UserContentInjectedFrames, UserScript,
-  UserScriptInjectionTime, WebView, WebViewBuilder,
+  traits::*, NavigationPolicyDecision, PolicyDecisionType, ScriptDialogType,
+  UserContentInjectedFrames, UserScript, UserScriptInjectionTime, WebView, WebViewBuilder,
 };
 use webkit2gtk_sys::{
   webkit_get_major_version, webkit_get_micro_version, webkit_get_minor_version,
@@ -99,6 +99,24 @@ impl InnerWebView {
     // Register the handler we just connected
     manager.register_script_message_handler(&window_hash);
 
+    // Sync message handler
+    let sync_ipc_w = window_rc.clone();
+    let sync_ipc_marker = format!("__WRY_SYNC_IPC_{window_hash}__");
+    let sync_ipc_marker_clone = sync_ipc_marker.clone();
+    let sync_ipc_handler = attributes.sync_ipc_handler.take();
+    webview.connect_script_dialog(move |_webview, dialog| {
+      if dialog.dialog_type() == ScriptDialogType::Prompt {
+        if let Some(message) = dialog.message() && message.starts_with(&sync_ipc_marker) {
+          if let Some(sync_ipc_handler) = &sync_ipc_handler {
+            let payload = message[(&sync_ipc_marker).len()..].to_owned();
+            dialog.prompt_set_text(&sync_ipc_handler(&sync_ipc_w, payload));
+            return true;
+          }
+        }
+      }
+      return false;
+    });
+
     // Allow the webview to close it's own window
     let close_window = window_rc.clone();
     webview.connect_close(move |_| {
@@ -306,11 +324,14 @@ impl InnerWebView {
       is_inspector_open,
     };
 
-    // Initialize message handler
+    // Initialize message handlers
     let mut init = String::with_capacity(115 + 20 + 22);
+    init.push_str("(function(){const PROMPT=window.prompt;");
     init.push_str("Object.defineProperty(window, 'ipc', {value: Object.freeze({postMessage:function(x){window.webkit.messageHandlers[\"");
     init.push_str(&window_hash);
-    init.push_str("\"].postMessage(x)}})})");
+    init.push_str("\"].postMessage(x)},postSyncMessage:function(x){PROMPT(\"");
+    init.push_str(&sync_ipc_marker_clone);
+    init.push_str("\"+x)}})})})()");
     w.init(&init)?;
 
     // Initialize scripts