From bb3a0cc54fb0257fd97553469a6ee6bb7eb59710 Mon Sep 17 00:00:00 2001
From: Lea Anthony <lea.anthony@gmail.com>
Date: Wed, 13 Sep 2023 08:57:09 +1000
Subject: [PATCH] Add `WebviewWindow.IsFocused()`

---
 v3/pkg/application/linux_cgo.go              |  5 +++++
 v3/pkg/application/webview_window.go         |  9 +++++++++
 v3/pkg/application/webview_window_darwin.go  | 10 +++++++++-
 v3/pkg/application/webview_window_linux.go   |  4 ++++
 v3/pkg/application/webview_window_windows.go |  5 +++++
 5 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/v3/pkg/application/linux_cgo.go b/v3/pkg/application/linux_cgo.go
index 1371a8968..53279064a 100644
--- a/v3/pkg/application/linux_cgo.go
+++ b/v3/pkg/application/linux_cgo.go
@@ -551,6 +551,11 @@ func windowIsFullscreen(window pointer) bool {
 	return state&C.GDK_WINDOW_STATE_FULLSCREEN > 0
 }
 
+func windowIsFocused(window pointer) bool {
+	// returns true if window is focused
+	return C.gtk_window_has_toplevel_focus((*C.GtkWindow)(window)) == 1
+}
+
 func windowIsMaximized(window pointer) bool {
 	gdkwindow := C.gtk_widget_get_window((*C.GtkWidget)(window))
 	state := C.gdk_window_get_state(gdkwindow)
diff --git a/v3/pkg/application/webview_window.go b/v3/pkg/application/webview_window.go
index 14dbb6e8e..a71a42eee 100644
--- a/v3/pkg/application/webview_window.go
+++ b/v3/pkg/application/webview_window.go
@@ -53,6 +53,7 @@ type (
 		isFullscreen() bool
 		isNormal() bool
 		isVisible() bool
+		isFocused() bool
 		setFullscreenButtonEnabled(enabled bool)
 		focus()
 		show()
@@ -482,6 +483,14 @@ func (w *WebviewWindow) Size() (int, int) {
 	return width, height
 }
 
+// IsFocused returns true if the window is currently focused
+func (w *WebviewWindow) IsFocused() bool {
+	if w.impl == nil {
+		return false
+	}
+	return invokeSyncWithResult(w.impl.isFullscreen)
+}
+
 // IsFullscreen returns true if the window is fullscreen
 func (w *WebviewWindow) IsFullscreen() bool {
 	if w.impl == nil {
diff --git a/v3/pkg/application/webview_window_darwin.go b/v3/pkg/application/webview_window_darwin.go
index 6981f85ca..3c8560c6d 100644
--- a/v3/pkg/application/webview_window_darwin.go
+++ b/v3/pkg/application/webview_window_darwin.go
@@ -345,6 +345,10 @@ bool windowIsMinimised(void* nsWindow) {
 	return [(WebviewWindow*)nsWindow isMiniaturized];
 }
 
+bool windowIsFocused(void* nsWindow) {
+	return [(WebviewWindow*)nsWindow isKeyWindow];
+}
+
 // Set Window fullscreen
 void windowFullscreen(void* nsWindow) {
 	if( windowIsFullscreen(nsWindow) ) {
@@ -716,6 +720,10 @@ type macosWebviewWindow struct {
 	parent   *WebviewWindow
 }
 
+func (w *macosWebviewWindow) isFocused() bool {
+	return bool(C.windowIsFocused(w.nsWindow))
+}
+
 func (w *macosWebviewWindow) setAbsolutePosition(x int, y int) {
 	C.windowSetAbsolutePosition(w.nsWindow, C.int(x), C.int(y))
 }
@@ -944,7 +952,7 @@ func (w *macosWebviewWindow) setTitle(title string) {
 	}
 }
 
-func (w *macosWebviewWindow) flash(enabled bool) {
+func (w *macosWebviewWindow) flash(_ bool) {
 	// Not supported on macOS
 }
 
diff --git a/v3/pkg/application/webview_window_linux.go b/v3/pkg/application/webview_window_linux.go
index d35aeae99..dce9c9f81 100644
--- a/v3/pkg/application/webview_window_linux.go
+++ b/v3/pkg/application/webview_window_linux.go
@@ -231,6 +231,10 @@ func (w *linuxWebviewWindow) isMaximised() bool {
 	return windowIsMaximized(w.window)
 }
 
+func (w *linuxWebviewWindow) isFocused() bool {
+	return windowIsFocused(w.window)
+}
+
 func (w *linuxWebviewWindow) isFullscreen() bool {
 	return windowIsFullscreen(w.window)
 }
diff --git a/v3/pkg/application/webview_window_windows.go b/v3/pkg/application/webview_window_windows.go
index 81d686656..cdc971620 100644
--- a/v3/pkg/application/webview_window_windows.go
+++ b/v3/pkg/application/webview_window_windows.go
@@ -549,6 +549,11 @@ func (w *windowsWebviewWindow) isMaximised() bool {
 	return style&w32.WS_MAXIMIZE != 0
 }
 
+func (w *windowsWebviewWindow) isFocused() bool {
+	// Returns true if the window is currently focused
+	return w32.GetForegroundWindow() == w.hwnd
+}
+
 func (w *windowsWebviewWindow) isFullscreen() bool {
 	// TODO: Actually calculate this based on size of window against screen size
 	// => stffabi: This flag is essential since it indicates that we are in fullscreen mode even before the native properties