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electron_api_menu_mac.mm
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electron_api_menu_mac.mm
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// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#import "shell/browser/api/electron_api_menu_mac.h"
#include <string>
#include <utility>
#include "base/mac/scoped_sending_event.h"
#include "base/strings/sys_string_conversions.h"
#include "base/task/current_thread.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
#include "shell/browser/native_window.h"
#include "shell/browser/unresponsive_suppressor.h"
#include "shell/common/keyboard_util.h"
#include "shell/common/node_includes.h"
namespace {
static scoped_nsobject<NSMenu> applicationMenu_;
ui::Accelerator GetAcceleratorFromKeyEquivalentAndModifierMask(
NSString* key_equivalent,
NSUInteger modifier_mask) {
absl::optional<char16_t> shifted_char;
ui::KeyboardCode code = electron::KeyboardCodeFromStr(
base::SysNSStringToUTF8(key_equivalent), &shifted_char);
int modifiers = 0;
if (modifier_mask & NSEventModifierFlagShift)
modifiers |= ui::EF_SHIFT_DOWN;
if (modifier_mask & NSEventModifierFlagControl)
modifiers |= ui::EF_CONTROL_DOWN;
if (modifier_mask & NSEventModifierFlagOption)
modifiers |= ui::EF_ALT_DOWN;
if (modifier_mask & NSEventModifierFlagCommand)
modifiers |= ui::EF_COMMAND_DOWN;
return ui::Accelerator(code, modifiers);
}
} // namespace
namespace electron::api {
MenuMac::MenuMac(gin::Arguments* args) : Menu(args) {}
MenuMac::~MenuMac() = default;
void MenuMac::PopupAt(BaseWindow* window,
int x,
int y,
int positioning_item,
base::OnceClosure callback) {
NativeWindow* native_window = window->window();
if (!native_window)
return;
// Make sure the Menu object would not be garbage-collected until the callback
// has run.
base::OnceClosure callback_with_ref = BindSelfToClosure(std::move(callback));
auto popup =
base::BindOnce(&MenuMac::PopupOnUI, weak_factory_.GetWeakPtr(),
native_window->GetWeakPtr(), window->weak_map_id(), x, y,
positioning_item, std::move(callback_with_ref));
base::SequencedTaskRunnerHandle::Get()->PostTask(FROM_HERE, std::move(popup));
}
v8::Local<v8::Value> Menu::GetUserAcceleratorAt(int command_id) const {
v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
if (![NSMenuItem usesUserKeyEquivalents])
return v8::Null(isolate);
auto controller = base::scoped_nsobject<ElectronMenuController>(
[[ElectronMenuController alloc] initWithModel:model()
useDefaultAccelerator:NO]);
int command_index = GetIndexOfCommandId(command_id);
if (command_index == -1)
return v8::Null(isolate);
base::scoped_nsobject<NSMenuItem> item =
[controller makeMenuItemForIndex:command_index fromModel:model()];
if ([[item userKeyEquivalent] length] == 0)
return v8::Null(isolate);
NSString* user_key_equivalent = [item keyEquivalent];
NSUInteger user_modifier_mask = [item keyEquivalentModifierMask];
ui::Accelerator accelerator = GetAcceleratorFromKeyEquivalentAndModifierMask(
user_key_equivalent, user_modifier_mask);
return gin::ConvertToV8(isolate, accelerator.GetShortcutText());
}
void MenuMac::PopupOnUI(const base::WeakPtr<NativeWindow>& native_window,
int32_t window_id,
int x,
int y,
int positioning_item,
base::OnceClosure callback) {
if (!native_window)
return;
NSWindow* nswindow = native_window->GetNativeWindow().GetNativeNSWindow();
base::OnceClosure close_callback =
base::BindOnce(&MenuMac::OnClosed, weak_factory_.GetWeakPtr(), window_id,
std::move(callback));
popup_controllers_[window_id] = base::scoped_nsobject<ElectronMenuController>(
[[ElectronMenuController alloc] initWithModel:model()
useDefaultAccelerator:NO]);
NSMenu* menu = [popup_controllers_[window_id] menu];
NSView* view = [nswindow contentView];
// Which menu item to show.
NSMenuItem* item = nil;
if (positioning_item < [menu numberOfItems] && positioning_item >= 0)
item = [menu itemAtIndex:positioning_item];
// (-1, -1) means showing on mouse location.
NSPoint position;
if (x == -1 || y == -1) {
position = [view convertPoint:[nswindow mouseLocationOutsideOfEventStream]
fromView:nil];
} else {
position = NSMakePoint(x, [view frame].size.height - y);
}
// If no preferred item is specified, try to show all of the menu items.
if (!item) {
CGFloat windowBottom = CGRectGetMinY([view window].frame);
CGFloat lowestMenuPoint = windowBottom + position.y - [menu size].height;
CGFloat screenBottom = CGRectGetMinY([view window].screen.visibleFrame);
CGFloat distanceFromBottom = lowestMenuPoint - screenBottom;
if (distanceFromBottom < 0)
position.y = position.y - distanceFromBottom + 4;
}
// Place the menu left of cursor if it is overflowing off right of screen.
CGFloat windowLeft = CGRectGetMinX([view window].frame);
CGFloat rightmostMenuPoint = windowLeft + position.x + [menu size].width;
CGFloat screenRight = CGRectGetMaxX([view window].screen.visibleFrame);
if (rightmostMenuPoint > screenRight)
position.x = position.x - [menu size].width;
[popup_controllers_[window_id] setCloseCallback:std::move(close_callback)];
// Make sure events can be pumped while the menu is up.
base::CurrentThread::ScopedNestableTaskAllower allow;
// One of the events that could be pumped is |window.close()|.
// User-initiated event-tracking loops protect against this by
// setting flags in -[CrApplication sendEvent:], but since
// web-content menus are initiated by IPC message the setup has to
// be done manually.
base::mac::ScopedSendingEvent sendingEventScoper;
// Don't emit unresponsive event when showing menu.
electron::UnresponsiveSuppressor suppressor;
[menu popUpMenuPositioningItem:item atLocation:position inView:view];
}
void MenuMac::ClosePopupAt(int32_t window_id) {
auto close_popup = base::BindOnce(&MenuMac::ClosePopupOnUI,
weak_factory_.GetWeakPtr(), window_id);
base::SequencedTaskRunnerHandle::Get()->PostTask(FROM_HERE,
std::move(close_popup));
}
std::u16string MenuMac::GetAcceleratorTextAtForTesting(int index) const {
// A least effort to get the real shortcut text of NSMenuItem, the code does
// not need to be perfect since it is test only.
base::scoped_nsobject<ElectronMenuController> controller(
[[ElectronMenuController alloc] initWithModel:model()
useDefaultAccelerator:NO]);
NSMenuItem* item = [[controller menu] itemAtIndex:index];
std::u16string text;
NSEventModifierFlags modifiers = [item keyEquivalentModifierMask];
if (modifiers & NSEventModifierFlagControl)
text += u"Ctrl";
if (modifiers & NSEventModifierFlagShift) {
if (!text.empty())
text += u"+";
text += u"Shift";
}
if (modifiers & NSEventModifierFlagOption) {
if (!text.empty())
text += u"+";
text += u"Alt";
}
if (modifiers & NSEventModifierFlagCommand) {
if (!text.empty())
text += u"+";
text += u"Command";
}
if (!text.empty())
text += u"+";
auto key = base::ToUpperASCII(base::SysNSStringToUTF16([item keyEquivalent]));
if (key == u"\t")
text += u"Tab";
else
text += key;
return text;
}
void MenuMac::ClosePopupOnUI(int32_t window_id) {
auto controller = popup_controllers_.find(window_id);
if (controller != popup_controllers_.end()) {
// Close the controller for the window.
[controller->second cancel];
} else if (window_id == -1) {
// Or just close all opened controllers.
for (auto it = popup_controllers_.begin();
it != popup_controllers_.end();) {
// The iterator is invalidated after the call.
[(it++)->second cancel];
}
}
}
void MenuMac::OnClosed(int32_t window_id, base::OnceClosure callback) {
popup_controllers_.erase(window_id);
std::move(callback).Run();
}
// static
void Menu::SetApplicationMenu(Menu* base_menu) {
MenuMac* menu = static_cast<MenuMac*>(base_menu);
base::scoped_nsobject<ElectronMenuController> menu_controller(
[[ElectronMenuController alloc] initWithModel:menu->model_.get()
useDefaultAccelerator:YES]);
NSRunLoop* currentRunLoop = [NSRunLoop currentRunLoop];
[currentRunLoop cancelPerformSelector:@selector(setMainMenu:)
target:NSApp
argument:applicationMenu_];
applicationMenu_.reset([[menu_controller menu] retain]);
[[NSRunLoop currentRunLoop]
performSelector:@selector(setMainMenu:)
target:NSApp
argument:applicationMenu_
order:0
modes:[NSArray arrayWithObject:NSDefaultRunLoopMode]];
// Ensure the menu_controller_ is destroyed after main menu is set.
menu_controller.swap(menu->menu_controller_);
}
// static
void Menu::SendActionToFirstResponder(const std::string& action) {
SEL selector = NSSelectorFromString(base::SysUTF8ToNSString(action));
[NSApp sendAction:selector to:nil from:[NSApp mainMenu]];
}
// static
gin::Handle<Menu> Menu::New(gin::Arguments* args) {
auto handle =
gin::CreateHandle(args->isolate(), static_cast<Menu*>(new MenuMac(args)));
gin_helper::CallMethod(args->isolate(), handle.get(), "_init");
return handle;
}
} // namespace electron::api