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cef/libcef/browser/menu_model_impl.cc

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// Copyright (c) 2012 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "libcef/browser/menu_model_impl.h"
#include <vector>
#include "libcef/browser/thread_util.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "content/public/common/menu_item.h"
#include "ui/base/accelerators/accelerator.h"
namespace {
const int kSeparatorId = -1;
// A simple MenuModel implementation that delegates to CefMenuModelImpl.
class CefSimpleMenuModel : public ui::MenuModel {
public:
// The Delegate can be NULL, though if it is items can't be checked or
// disabled.
explicit CefSimpleMenuModel(CefMenuModelImpl* impl)
: impl_(impl),
menu_model_delegate_(NULL) {
}
// MenuModel methods.
bool HasIcons() const override {
return false;
}
int GetItemCount() const override {
return impl_->GetCount();
}
ItemType GetTypeAt(int index) const override {
switch (impl_->GetTypeAt(index)) {
case MENUITEMTYPE_COMMAND:
return TYPE_COMMAND;
case MENUITEMTYPE_CHECK:
return TYPE_CHECK;
case MENUITEMTYPE_RADIO:
return TYPE_RADIO;
case MENUITEMTYPE_SEPARATOR:
return TYPE_SEPARATOR;
case MENUITEMTYPE_SUBMENU:
return TYPE_SUBMENU;
default:
NOTREACHED();
return TYPE_COMMAND;
}
}
ui::MenuSeparatorType GetSeparatorTypeAt(int index) const override {
return ui::NORMAL_SEPARATOR;
}
int GetCommandIdAt(int index) const override {
return impl_->GetCommandIdAt(index);
}
base::string16 GetLabelAt(int index) const override {
return impl_->GetFormattedLabelAt(index);
}
bool IsItemDynamicAt(int index) const override {
return false;
}
bool GetAcceleratorAt(int index,
ui::Accelerator* accelerator) const override {
int key_code = 0;
bool shift_pressed = false;
bool ctrl_pressed = false;
bool alt_pressed = false;
if (impl_->GetAcceleratorAt(index, key_code, shift_pressed, ctrl_pressed,
alt_pressed)) {
int modifiers = 0;
if (shift_pressed)
modifiers |= ui::EF_SHIFT_DOWN;
if (ctrl_pressed)
modifiers |= ui::EF_CONTROL_DOWN;
if (alt_pressed)
modifiers |= ui::EF_ALT_DOWN;
*accelerator = ui::Accelerator(static_cast<ui::KeyboardCode>(key_code),
modifiers);
return true;
}
return false;
}
bool IsItemCheckedAt(int index) const override {
return impl_->IsCheckedAt(index);
}
int GetGroupIdAt(int index) const override {
return impl_->GetGroupIdAt(index);
}
bool GetIconAt(int index, gfx::Image* icon) override {
return false;
}
ui::ButtonMenuItemModel* GetButtonMenuItemAt(
int index) const override {
return NULL;
}
bool IsEnabledAt(int index) const override {
return impl_->IsEnabledAt(index);
}
bool IsVisibleAt(int index) const override {
return impl_->IsVisibleAt(index);
}
void HighlightChangedTo(int index) override {
}
void ActivatedAt(int index) override {
ActivatedAt(index, 0);
}
void ActivatedAt(int index, int event_flags) override {
impl_->ActivatedAt(index, static_cast<cef_event_flags_t>(event_flags));
}
MenuModel* GetSubmenuModelAt(int index) const override {
CefRefPtr<CefMenuModel> submenu = impl_->GetSubMenuAt(index);
if (submenu.get())
return static_cast<CefMenuModelImpl*>(submenu.get())->model();
return NULL;
}
void MenuWillShow() override {
impl_->MenuWillShow();
}
void MenuWillClose() override {
impl_->MenuWillClose();
}
void SetMenuModelDelegate(
ui::MenuModelDelegate* menu_model_delegate) override {
menu_model_delegate_ = menu_model_delegate;
}
ui::MenuModelDelegate* GetMenuModelDelegate() const override {
return menu_model_delegate_;
}
private:
CefMenuModelImpl* impl_;
ui::MenuModelDelegate* menu_model_delegate_;
DISALLOW_COPY_AND_ASSIGN(CefSimpleMenuModel);
};
} // namespace
// static
CefRefPtr<CefMenuModel> CefMenuModel::CreateMenuModel(
CefRefPtr<CefMenuModelDelegate> delegate) {
CEF_REQUIRE_UIT_RETURN(nullptr);
DCHECK(delegate);
if (!delegate)
return nullptr;
CefRefPtr<CefMenuModelImpl> menu_model =
new CefMenuModelImpl(nullptr, delegate);
return menu_model;
}
struct CefMenuModelImpl::Item {
Item(cef_menu_item_type_t type,
int command_id,
const CefString& label,
int group_id)
: type_(type),
command_id_(command_id),
label_(label),
group_id_(group_id),
enabled_(true),
visible_(true),
checked_(false),
has_accelerator_(false),
key_code_(0),
shift_pressed_(false),
ctrl_pressed_(false),
alt_pressed_(false) {
}
// Basic information.
cef_menu_item_type_t type_;
int command_id_;
CefString label_;
int group_id_;
CefRefPtr<CefMenuModelImpl> submenu_;
// State information.
bool enabled_;
bool visible_;
bool checked_;
// Accelerator information.
bool has_accelerator_;
int key_code_;
bool shift_pressed_;
bool ctrl_pressed_;
bool alt_pressed_;
};
CefMenuModelImpl::CefMenuModelImpl(
Delegate* delegate,
CefRefPtr<CefMenuModelDelegate> menu_model_delegate)
: supported_thread_id_(base::PlatformThread::CurrentId()),
delegate_(delegate),
menu_model_delegate_(menu_model_delegate) {
DCHECK(delegate_ || menu_model_delegate_);
model_.reset(new CefSimpleMenuModel(this));
}
CefMenuModelImpl::~CefMenuModelImpl() {
}
bool CefMenuModelImpl::Clear() {
if (!VerifyContext())
return false;
items_.clear();
return true;
}
int CefMenuModelImpl::GetCount() {
if (!VerifyContext())
return 0;
return static_cast<int>(items_.size());
}
bool CefMenuModelImpl::AddSeparator() {
if (!VerifyContext())
return false;
AppendItem(Item(MENUITEMTYPE_SEPARATOR, kSeparatorId, CefString(), -1));
return true;
}
bool CefMenuModelImpl::AddItem(int command_id, const CefString& label) {
if (!VerifyContext())
return false;
AppendItem(Item(MENUITEMTYPE_COMMAND, command_id, label, -1));
return true;
}
bool CefMenuModelImpl::AddCheckItem(int command_id, const CefString& label) {
if (!VerifyContext())
return false;
AppendItem(Item(MENUITEMTYPE_CHECK, command_id, label, -1));
return true;
}
bool CefMenuModelImpl::AddRadioItem(int command_id, const CefString& label,
int group_id) {
if (!VerifyContext())
return false;
AppendItem(Item(MENUITEMTYPE_RADIO, command_id, label, group_id));
return true;
}
CefRefPtr<CefMenuModel> CefMenuModelImpl::AddSubMenu(int command_id,
const CefString& label) {
if (!VerifyContext())
return NULL;
Item item(MENUITEMTYPE_SUBMENU, command_id, label, -1);
item.submenu_ = new CefMenuModelImpl(delegate_, menu_model_delegate_);
AppendItem(item);
return item.submenu_.get();
}
bool CefMenuModelImpl::InsertSeparatorAt(int index) {
if (!VerifyContext())
return false;
InsertItemAt(Item(MENUITEMTYPE_SEPARATOR, kSeparatorId, CefString(), -1),
index);
return true;
}
bool CefMenuModelImpl::InsertItemAt(int index, int command_id,
const CefString& label) {
if (!VerifyContext())
return false;
InsertItemAt(Item(MENUITEMTYPE_COMMAND, command_id, label, -1), index);
return true;
}
bool CefMenuModelImpl::InsertCheckItemAt(int index, int command_id,
const CefString& label) {
if (!VerifyContext())
return false;
InsertItemAt(Item(MENUITEMTYPE_CHECK, command_id, label, -1), index);
return true;
}
bool CefMenuModelImpl::InsertRadioItemAt(int index, int command_id,
const CefString& label, int group_id) {
if (!VerifyContext())
return false;
InsertItemAt(Item(MENUITEMTYPE_RADIO, command_id, label, -1), index);
return true;
}
CefRefPtr<CefMenuModel> CefMenuModelImpl::InsertSubMenuAt(
int index, int command_id, const CefString& label) {
if (!VerifyContext())
return NULL;
Item item(MENUITEMTYPE_SUBMENU, command_id, label, -1);
item.submenu_ = new CefMenuModelImpl(delegate_, menu_model_delegate_);
InsertItemAt(item, index);
return item.submenu_.get();
}
bool CefMenuModelImpl::Remove(int command_id) {
return RemoveAt(GetIndexOf(command_id));
}
bool CefMenuModelImpl::RemoveAt(int index) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
items_.erase(items_.begin()+index);
return true;
}
return false;
}
int CefMenuModelImpl::GetIndexOf(int command_id) {
if (!VerifyContext())
return -1;
for (ItemVector::iterator i = items_.begin(); i != items_.end(); ++i) {
if ((*i).command_id_ == command_id) {
return static_cast<int>(std::distance(items_.begin(), i));
}
}
return -1;
}
int CefMenuModelImpl::GetCommandIdAt(int index) {
if (!VerifyContext())
return -1;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].command_id_;
return -1;
}
bool CefMenuModelImpl::SetCommandIdAt(int index, int command_id) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
items_[index].command_id_ = command_id;
return true;
}
return false;
}
CefString CefMenuModelImpl::GetLabel(int command_id) {
return GetLabelAt(GetIndexOf(command_id));
}
CefString CefMenuModelImpl::GetLabelAt(int index) {
if (!VerifyContext())
return CefString();
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].label_;
return CefString();
}
bool CefMenuModelImpl::SetLabel(int command_id, const CefString& label) {
return SetLabelAt(GetIndexOf(command_id), label);
}
bool CefMenuModelImpl::SetLabelAt(int index, const CefString& label) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
items_[index].label_ = label;
return true;
}
return false;
}
CefMenuModelImpl::MenuItemType CefMenuModelImpl::GetType(int command_id) {
return GetTypeAt(GetIndexOf(command_id));
}
CefMenuModelImpl::MenuItemType CefMenuModelImpl::GetTypeAt(int index) {
if (!VerifyContext())
return MENUITEMTYPE_NONE;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].type_;
return MENUITEMTYPE_NONE;
}
int CefMenuModelImpl::GetGroupId(int command_id) {
return GetGroupIdAt(GetIndexOf(command_id));
}
int CefMenuModelImpl::GetGroupIdAt(int index) {
if (!VerifyContext())
return -1;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].group_id_;
return -1;
}
bool CefMenuModelImpl::SetGroupId(int command_id, int group_id) {
return SetGroupIdAt(GetIndexOf(command_id), group_id);
}
bool CefMenuModelImpl::SetGroupIdAt(int index, int group_id) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
items_[index].group_id_ = group_id;
return true;
}
return false;
}
CefRefPtr<CefMenuModel> CefMenuModelImpl::GetSubMenu(int command_id) {
return GetSubMenuAt(GetIndexOf(command_id));
}
CefRefPtr<CefMenuModel> CefMenuModelImpl::GetSubMenuAt(int index) {
if (!VerifyContext())
return NULL;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].submenu_.get();
return NULL;
}
bool CefMenuModelImpl::IsVisible(int command_id) {
return IsVisibleAt(GetIndexOf(command_id));
}
bool CefMenuModelImpl::IsVisibleAt(int index) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].visible_;
return false;
}
bool CefMenuModelImpl::SetVisible(int command_id, bool visible) {
return SetVisibleAt(GetIndexOf(command_id), visible);
}
bool CefMenuModelImpl::SetVisibleAt(int index, bool visible) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
items_[index].visible_ = visible;
return true;
}
return false;
}
bool CefMenuModelImpl::IsEnabled(int command_id) {
return IsEnabledAt(GetIndexOf(command_id));
}
bool CefMenuModelImpl::IsEnabledAt(int index) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].enabled_;
return false;
}
bool CefMenuModelImpl::SetEnabled(int command_id, bool enabled) {
return SetEnabledAt(GetIndexOf(command_id), enabled);
}
bool CefMenuModelImpl::SetEnabledAt(int index, bool enabled) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
items_[index].enabled_ = enabled;
return true;
}
return false;
}
bool CefMenuModelImpl::IsChecked(int command_id) {
return IsCheckedAt(GetIndexOf(command_id));
}
bool CefMenuModelImpl::IsCheckedAt(int index) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].checked_;
return false;
}
bool CefMenuModelImpl::SetChecked(int command_id, bool checked) {
return SetCheckedAt(GetIndexOf(command_id), checked);
}
bool CefMenuModelImpl::SetCheckedAt(int index, bool checked) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
items_[index].checked_ = checked;
return true;
}
return false;
}
bool CefMenuModelImpl::HasAccelerator(int command_id) {
return HasAcceleratorAt(GetIndexOf(command_id));
}
bool CefMenuModelImpl::HasAcceleratorAt(int index) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size()))
return items_[index].has_accelerator_;
return false;
}
bool CefMenuModelImpl::SetAccelerator(int command_id, int key_code,
bool shift_pressed, bool ctrl_pressed,
bool alt_pressed) {
return SetAcceleratorAt(GetIndexOf(command_id), key_code, shift_pressed,
ctrl_pressed, alt_pressed);
}
bool CefMenuModelImpl::SetAcceleratorAt(int index, int key_code,
bool shift_pressed, bool ctrl_pressed,
bool alt_pressed) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
Item& item = items_[index];
item.has_accelerator_ = true;
item.key_code_ = key_code;
item.shift_pressed_ = shift_pressed;
item.ctrl_pressed_ = ctrl_pressed;
item.alt_pressed_ = alt_pressed;
return true;
}
return false;
}
bool CefMenuModelImpl::RemoveAccelerator(int command_id) {
return RemoveAcceleratorAt(GetIndexOf(command_id));
}
bool CefMenuModelImpl::RemoveAcceleratorAt(int index) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
Item& item = items_[index];
if (item.has_accelerator_) {
item.has_accelerator_ = false;
item.key_code_ = 0;
item.shift_pressed_ = false;
item.ctrl_pressed_ = false;
item.alt_pressed_ = false;
}
return true;
}
return false;
}
bool CefMenuModelImpl::GetAccelerator(int command_id, int& key_code,
bool& shift_pressed, bool& ctrl_pressed,
bool& alt_pressed) {
return GetAcceleratorAt(GetIndexOf(command_id), key_code, shift_pressed,
ctrl_pressed, alt_pressed);
}
bool CefMenuModelImpl::GetAcceleratorAt(int index, int& key_code,
bool& shift_pressed, bool& ctrl_pressed,
bool& alt_pressed) {
if (!VerifyContext())
return false;
if (index >= 0 && index < static_cast<int>(items_.size())) {
const Item& item = items_[index];
if (item.has_accelerator_) {
key_code = item.key_code_;
shift_pressed = item.shift_pressed_;
ctrl_pressed = item.ctrl_pressed_;
alt_pressed = item.alt_pressed_;
return true;
}
}
return false;
}
void CefMenuModelImpl::ActivatedAt(int index, cef_event_flags_t event_flags) {
if (!VerifyContext())
return;
const int command_id = GetCommandIdAt(index);
if (delegate_)
delegate_->ExecuteCommand(this, command_id, event_flags);
if (menu_model_delegate_)
menu_model_delegate_->ExecuteCommand(this, command_id, event_flags);
}
void CefMenuModelImpl::MenuWillShow() {
if (!VerifyContext())
return;
if (delegate_)
delegate_->MenuWillShow(this);
if (menu_model_delegate_)
menu_model_delegate_->MenuWillShow(this);
FOR_EACH_OBSERVER(Observer, observers_, MenuWillShow(this));
}
void CefMenuModelImpl::MenuWillClose() {
if (!VerifyContext())
return;
// Due to how menus work on the different platforms, ActivatedAt will be
// called after this. It's more convenient for the delegate to be called
// afterwards, though, so post a task.
base::MessageLoop::current()->task_runner()->PostTask(
FROM_HERE,
base::Bind(&CefMenuModelImpl::OnMenuClosed, this));
}
base::string16 CefMenuModelImpl::GetFormattedLabelAt(int index) {
base::string16 label = GetLabelAt(index).ToString16();
if (delegate_)
delegate_->FormatLabel(label);
if (menu_model_delegate_) {
CefString new_label = label;
if (menu_model_delegate_->FormatLabel(this, new_label))
label = new_label;
}
return label;
}
bool CefMenuModelImpl::VerifyRefCount() {
if (!VerifyContext())
return false;
if (!HasOneRef())
return false;
for (ItemVector::iterator i = items_.begin(); i != items_.end(); ++i) {
if ((*i).submenu_.get()) {
if (!(*i).submenu_->VerifyRefCount())
return false;
}
}
return true;
}
void CefMenuModelImpl::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void CefMenuModelImpl::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
bool CefMenuModelImpl::HasObserver(Observer* observer) const {
return observers_.HasObserver(observer);
}
void CefMenuModelImpl::AddMenuItem(const content::MenuItem& menu_item) {
const int command_id = static_cast<int>(menu_item.action);
switch (menu_item.type) {
case content::MenuItem::OPTION:
AddItem(command_id, menu_item.label);
break;
case content::MenuItem::CHECKABLE_OPTION:
AddCheckItem(command_id, menu_item.label);
break;
case content::MenuItem::GROUP:
AddRadioItem(command_id, menu_item.label, 0);
break;
case content::MenuItem::SEPARATOR:
AddSeparator();
break;
case content::MenuItem::SUBMENU: {
CefRefPtr<CefMenuModelImpl> sub_menu = static_cast<CefMenuModelImpl*>(
AddSubMenu(command_id, menu_item.label).get());
for (size_t i = 0; i < menu_item.submenu.size(); ++i)
sub_menu->AddMenuItem(menu_item.submenu[i]);
break;
}
}
if (!menu_item.enabled && menu_item.type != content::MenuItem::SEPARATOR)
SetEnabled(command_id, false);
if (menu_item.checked &&
(menu_item.type == content::MenuItem::CHECKABLE_OPTION ||
menu_item.type == content::MenuItem::GROUP)) {
SetChecked(command_id, true);
}
}
void CefMenuModelImpl::AppendItem(const Item& item) {
ValidateItem(item);
items_.push_back(item);
}
void CefMenuModelImpl::InsertItemAt(const Item& item, int index) {
// Sanitize the index.
if (index < 0)
index = 0;
else if (index > static_cast<int>(items_.size()))
index = items_.size();
ValidateItem(item);
items_.insert(items_.begin() + index, item);
}
void CefMenuModelImpl::ValidateItem(const Item& item) {
#if DCHECK_IS_ON()
if (item.type_ == MENUITEMTYPE_SEPARATOR) {
DCHECK_EQ(item.command_id_, kSeparatorId);
} else {
DCHECK_GE(item.command_id_, 0);
}
#endif
}
void CefMenuModelImpl::OnMenuClosed() {
if (delegate_)
delegate_->MenuClosed(this);
if (menu_model_delegate_)
menu_model_delegate_->MenuClosed(this);
FOR_EACH_OBSERVER(Observer, observers_, MenuClosed(this));
}
bool CefMenuModelImpl::VerifyContext() {
if (base::PlatformThread::CurrentId() != supported_thread_id_) {
// This object should only be accessed from the thread that created it.
NOTREACHED();
return false;
}
return true;
}
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