mac: Add win.beginSheet(sheet)/endSheet(sheet) API

atom/browser/api/atom_api_window.cc

@@ -723,6 +723,18 @@ bool Window::IsModal() const {
   return is_modal_;
 }
 
+void Window::BeginSheet(mate::Handle<Window> sheet, mate::Arguments* args) {
+  if (sheet->IsVisible()) {
+    args->ThrowError("Sheet window must not be visible");
+    return;
+  }
+  window_->BeginSheet(sheet->window_.get());
+}
+
+void Window::EndSheet(mate::Handle<Window> sheet) {
+  window_->EndSheet(sheet->window_.get());
+}
+
 v8::Local<v8::Value> Window::GetNativeWindowHandle() {
   gfx::AcceleratedWidget handle = window_->GetAcceleratedWidget();
   return ToBuffer(
@@ -793,6 +805,8 @@ void Window::BuildPrototype(v8::Isolate* isolate,
       .SetMethod("getChildWindows", &Window::GetChildWindows)
       .SetMethod("setModal", &Window::SetModal)
       .SetMethod("isModal", &Window::IsModal)
+      .SetMethod("beginSheet", &Window::BeginSheet)
+      .SetMethod("endSheet", &Window::EndSheet)
       .SetMethod("getNativeWindowHandle", &Window::GetNativeWindowHandle)
       .SetMethod("getBounds", &Window::GetBounds)
       .SetMethod("setBounds", &Window::SetBounds)

atom/browser/api/atom_api_window.h

@@ -168,6 +168,8 @@ class Window : public mate::TrackableObject<Window>,
   std::vector<v8::Local<v8::Object>> GetChildWindows() const;
   void SetModal(bool modal, mate::Arguments* args);
   bool IsModal() const;
+  void BeginSheet(mate::Handle<Window> sheet, mate::Arguments* args);
+  void EndSheet(mate::Handle<Window> sheet);
   v8::Local<v8::Value> GetNativeWindowHandle();
 
 #if defined(OS_WIN)

atom/browser/native_window.cc

@@ -292,6 +292,12 @@ bool NativeWindow::HasModalDialog() {
   return has_dialog_attached_;
 }
 
+void NativeWindow::BeginSheet(NativeWindow* sheet) {
+}
+
+void NativeWindow::EndSheet(NativeWindow* sheet) {
+}
+
 void NativeWindow::FocusOnWebView() {
   web_contents()->GetRenderViewHost()->GetWidget()->Focus();
 }

atom/browser/native_window.h

@@ -162,6 +162,8 @@ class NativeWindow : public base::SupportsUserData,
   virtual void SetMenu(ui::MenuModel* menu);
   virtual bool HasModalDialog();
   virtual void SetParentWindow(NativeWindow* parent) = 0;
+  virtual void BeginSheet(NativeWindow* sheet);
+  virtual void EndSheet(NativeWindow* sheet);
   virtual gfx::NativeWindow GetNativeWindow() = 0;
   virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0;
 

atom/browser/native_window_mac.h

@@ -82,6 +82,8 @@ class NativeWindowMac : public NativeWindow {
   void SetIgnoreMouseEvents(bool ignore) override;
   bool HasModalDialog() override;
   void SetParentWindow(NativeWindow* parent) override;
+  void BeginSheet(NativeWindow* sheet) override;
+  void EndSheet(NativeWindow* sheet) override;
   gfx::NativeWindow GetNativeWindow() override;
   gfx::AcceleratedWidget GetAcceleratedWidget() override;
   void SetProgressBar(double progress) override;

atom/browser/native_window_mac.mm

@@ -964,6 +964,18 @@ void NativeWindowMac::SetParentWindow(NativeWindow* parent) {
     [parent->GetNativeWindow() addChildWindow:window_ ordered:NSWindowAbove];
 }
 
+void NativeWindowMac::BeginSheet(NativeWindow* sheet) {
+  [window_ beginSheet:sheet->GetNativeWindow()
+    completionHandler:^(NSModalResponse) {
+  }];
+}
+
+void NativeWindowMac::EndSheet(NativeWindow* sheet) {
+  sheet->Hide();
+  [window_ endSheet:sheet->GetNativeWindow()];
+  sheet->CloseImmediately();
+}
+
 gfx::NativeWindow NativeWindowMac::GetNativeWindow() {
   return window_;
 }