From f7fba578a1f5e2ef2b0ede1ac058b3fdb95ab4b1 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sun, 25 Feb 2018 16:26:58 +0100
Subject: [PATCH] Implement HTMLInput::execute_javascript_async().

---
 cef_capture.cpp |  9 +++++++++
 cef_capture.h   |  1 +
 theme.cpp       | 11 ++++++++++-
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/cef_capture.cpp b/cef_capture.cpp
index 9c4f68c..1836eb8 100644
--- a/cef_capture.cpp
+++ b/cef_capture.cpp
@@ -71,6 +71,15 @@ void CEFCapture::set_max_fps(int max_fps)
 	});
 }
 
+void CEFCapture::execute_javascript_async(const string &js)
+{
+	post_to_cef_ui_thread([this, js] {
+		CefString script_url("<theme eval>");
+		int start_line = 1;
+		browser->GetMainFrame()->ExecuteJavaScript(js, script_url, start_line);
+	});
+}
+
 void CEFCapture::OnPaint(const void *buffer, int width, int height)
 {
 	steady_clock::time_point timestamp = steady_clock::now();
diff --git a/cef_capture.h b/cef_capture.h
index be5402f..11cdc33 100644
--- a/cef_capture.h
+++ b/cef_capture.h
@@ -72,6 +72,7 @@ public:
 	void set_url(const std::string &url);
 	void reload();
 	void set_max_fps(int max_fps);
+	void execute_javascript_async(const std::string &js);
 
 	void OnPaint(const void *buffer, int width, int height);
 
diff --git a/theme.cpp b/theme.cpp
index 71970c9..091495f 100644
--- a/theme.cpp
+++ b/theme.cpp
@@ -448,6 +448,15 @@ int HTMLInput_set_max_fps(lua_State* L)
 	return 0;
 }
 
+int HTMLInput_execute_javascript_async(lua_State* L)
+{
+	assert(lua_gettop(L) == 2);
+	CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
+	string js = checkstdstring(L, 2);
+	(*video_input)->execute_javascript_async(js);
+	return 0;
+}
+
 int HTMLInput_get_signal_num(lua_State* L)
 {
 	assert(lua_gettop(L) == 1);
@@ -665,11 +674,11 @@ const luaL_Reg VideoInput_funcs[] = {
 };
 
 const luaL_Reg HTMLInput_funcs[] = {
-	// TODO: execute_javascript
 	{ "new", HTMLInput_new },
 	{ "set_url", HTMLInput_set_url },
 	{ "reload", HTMLInput_reload },
 	{ "set_max_fps", HTMLInput_set_max_fps },
+	{ "execute_javascript_async", HTMLInput_execute_javascript_async },
 	{ "get_signal_num", HTMLInput_get_signal_num },
 	{ NULL, NULL }
 };
-- 
2.39.2