fix: make draggable regions work when devtools is opened on macOS (#26361)

* fix: make draggable region work when devtools is open

* fix: update draggable regions when resizing

shell/browser/api/electron_api_browser_window.h

@@ -63,6 +63,9 @@ class BrowserWindow : public BaseWindow,
   void OnActivateContents() override;
   void OnPageTitleUpdated(const base::string16& title,
                           bool explicit_set) override;
+#if defined(OS_MAC)
+  void OnDevToolsResized() override;
+#endif
 
   // NativeWindowObserver:
   void RequestPreferredWidth(int* width) override;

shell/browser/api/electron_api_browser_window_mac.mm

@@ -12,27 +12,9 @@
 #include "base/mac/scoped_nsobject.h"
 #include "shell/browser/native_browser_view.h"
 #include "shell/browser/native_window_mac.h"
+#include "shell/browser/ui/cocoa/electron_inspectable_web_contents_view.h"
 #include "shell/browser/ui/inspectable_web_contents_view.h"
 
-@interface NSView (WebContentsView)
-- (void)setMouseDownCanMoveWindow:(BOOL)can_move;
-@end
-
-@interface ControlRegionView : NSView
-@end
-
-@implementation ControlRegionView
-
-- (BOOL)mouseDownCanMoveWindow {
-  return NO;
-}
-
-- (NSView*)hitTest:(NSPoint)aPoint {
-  return nil;
-}
-
-@end
-
 namespace electron {
 
 namespace api {
@@ -54,6 +36,10 @@ void BrowserWindow::OverrideNSWindowContentView(InspectableWebContents* iwc) {
   [contentView viewDidMoveToWindow];
 }
 
+void BrowserWindow::OnDevToolsResized() {
+  UpdateDraggableRegions(draggable_regions_);
+}
+
 void BrowserWindow::UpdateDraggableRegions(
     const std::vector<mojom::DraggableRegionPtr>& regions) {
   if (window_->has_frame())

shell/browser/api/electron_api_web_contents.cc

@@ -1481,6 +1481,11 @@ void WebContents::DevToolsClosed() {
   Emit("devtools-closed");
 }
 
+void WebContents::DevToolsResized() {
+  for (ExtendedWebContentsObserver& observer : observers_)
+    observer.OnDevToolsResized();
+}
+
 bool WebContents::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebContents, message)

shell/browser/api/electron_api_web_contents.h

@@ -590,6 +590,7 @@ class WebContents : public gin::Wrappable<WebContents>,
   void DevToolsFocused() override;
   void DevToolsOpened() override;
   void DevToolsClosed() override;
+  void DevToolsResized() override;
 
  private:
   ElectronBrowserContext* GetBrowserContext() const;