Add active/inactive JS callback

Author: OsirisNL

README.md

@@ -24,6 +24,18 @@ window.obsstudio.onVisibilityChange = function(visiblity) {
 };
 ```
 
+### Register for active/inactive callbacks
+```
+/**
+ * onActiveChange gets callbacks when the active/inactive state of the browser source changes in OBS
+ *
+ * @param {bool} True -> active, False -> inactive
+ */
+window.obsstudio.onActiveChange = function(active) {
+	
+};
+```
+
 ### Register for scene change callbacks
 ```
 window.addEventListener('obsSceneChanged', function(evt) {

obs-browser/browser-manager-base.cpp

@@ -81,6 +81,11 @@ void BrowserManager::ExecuteVisiblityJSCallback(int browserIdentifier, bool visi
 	pimpl->ExecuteVisiblityJSCallback(browserIdentifier, visible);
 }
 
+void BrowserManager::ExecuteActiveJSCallback(int browserIdentifier, bool active)
+{
+	pimpl->ExecuteActiveJSCallback(browserIdentifier, active);
+}
+
 void BrowserManager::ExecuteSceneChangeJSCallback(const char *name)
 {
 	pimpl->ExecuteSceneChangeJSCallback(name);
@@ -336,6 +341,17 @@ void BrowserManager::Impl::ExecuteVisiblityJSCallback(int browserIdentifier, boo
 	});
 }
 
+void BrowserManager::Impl::ExecuteActiveJSCallback(int browserIdentifier, bool active)
+{
+	ExecuteOnBrowser(browserIdentifier, [&](CefRefPtr<CefBrowser> b)
+	{
+		CefRefPtr<CefProcessMessage> msg = CefProcessMessage::Create("Active");
+		CefRefPtr<CefListValue> args = msg->GetArgumentList();
+		args->SetBool(0, active);
+		b->SendProcessMessage(PID_RENDERER, msg);
+	});
+}
+
 void BrowserManager::Impl::ExecuteSceneChangeJSCallback(const char *name)
 {
 	ExecuteOnAllBrowsers([&](CefRefPtr<CefBrowser> b)

obs-browser/browser-manager-base.hpp

@@ -56,6 +56,8 @@ class BrowserManager::Impl
 
 	void ExecuteVisiblityJSCallback(int browserIdentifier, bool visible);
 
+	void ExecuteActiveJSCallback(int browserIdentifier, bool active);
+
 	void ExecuteSceneChangeJSCallback(const char *name);
 
 	void RefreshPageNoCache(int browserIdentifier);

obs-browser/main-source.cpp

@@ -154,11 +154,15 @@ static void browser_source_activate(void *data)
 
 	if (restart)
 		BrowserManager::Instance()->RefreshPageNoCache(bs->GetBrowserIdentifier());
+
+	bs->ExecuteActiveJSCallback(true);
 }
 
 static void browser_source_deactivate(void *data)
 {
+	BrowserSource *bs = static_cast<BrowserSource *>(data);
 
+	bs->ExecuteActiveJSCallback(false);
 }
 
 // Called when the source is visible

shared/browser-app.cpp

@@ -110,6 +110,13 @@ bool BrowserApp::OnProcessMessageReceived(CefRefPtr<CefBrowser> browser,
 		ExecuteJSFunction(browser, "onVisibilityChange", arguments);
 		return true;
 	}
+	else if (message->GetName() == "Active") {
+		CefV8ValueList arguments;
+		arguments.push_back(CefV8Value::CreateBool(args->GetBool(0)));
+
+		ExecuteJSFunction(browser, "onActiveChange", arguments);
+		return true;
+	}
 	else if (message->GetName() == "DispatchJSEvent") {       
 		CefRefPtr<CefV8Context> context = browser->GetMainFrame()->GetV8Context();
 
@@ -161,7 +168,6 @@ bool BrowserApp::OnProcessMessageReceived(CefRefPtr<CefBrowser> browser,
 		CefString jsonString = message->GetArgumentList()->GetString(1);
 
 		CefRefPtr<CefV8Value> callback = callbackMap[callbackID];
-		
 		CefV8ValueList args;
 		args.push_back(CefV8Value::CreateString(jsonString));
 

shared/browser-manager.hpp

@@ -61,6 +61,8 @@ class BrowserManager {
 	const char *GetModulePath() { return path; }
 
 	void ExecuteVisiblityJSCallback(int browserIdentifier, bool visible);
+
+	void ExecuteActiveJSCallback(int browserIdentifier, bool active);
 
 	void ExecuteSceneChangeJSCallback(const char *name);
 

shared/browser-source.cpp

@@ -94,3 +94,8 @@ void BrowserSource::ExecuteVisiblityJSCallback(bool visible)
 {
 	BrowserManager::Instance()->ExecuteVisiblityJSCallback(browserIdentifier, visible);
 }
+
+void BrowserSource::ExecuteActiveJSCallback(bool active)
+{
+	BrowserManager::Instance()->ExecuteActiveJSCallback(browserIdentifier, active);
+}

shared/browser-source.hpp

@@ -69,6 +69,7 @@ class BrowserSource {
 	std::shared_ptr<BrowserListener> CreateListener();
 
 	void ExecuteVisiblityJSCallback(bool visible);
+	void ExecuteActiveJSCallback(bool active);
 
 private:
 	class Impl;