electron/shell/browser/ui/accelerator_util.cc

110 lines
3.3 KiB
C++

// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/ui/accelerator_util.h"
#include <stdio.h>
#include <string>
#include <vector>
#include "base/logging.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "shell/common/keyboard_util.h"
namespace accelerator_util {
bool StringToAccelerator(const std::string& shortcut,
ui::Accelerator* accelerator) {
if (!base::IsStringASCII(shortcut)) {
LOG(ERROR) << "The accelerator string can only contain ASCII characters, "
"invalid string: "
<< "\"" << shortcut << "\"";
return false;
}
std::vector<std::string> tokens = base::SplitString(
shortcut, "+", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
// Now, parse it into an accelerator.
int modifiers = ui::EF_NONE;
ui::KeyboardCode key = ui::VKEY_UNKNOWN;
absl::optional<char16_t> shifted_char;
for (const auto& token : tokens) {
ui::KeyboardCode code = electron::KeyboardCodeFromStr(token, &shifted_char);
if (shifted_char)
modifiers |= ui::EF_SHIFT_DOWN;
switch (code) {
// The token can be a modifier.
case ui::VKEY_SHIFT:
modifiers |= ui::EF_SHIFT_DOWN;
break;
case ui::VKEY_CONTROL:
modifiers |= ui::EF_CONTROL_DOWN;
break;
case ui::VKEY_MENU:
modifiers |= ui::EF_ALT_DOWN;
break;
case ui::VKEY_COMMAND:
modifiers |= ui::EF_COMMAND_DOWN;
break;
case ui::VKEY_ALTGR:
modifiers |= ui::EF_ALTGR_DOWN;
break;
// Or it is a normal key.
default:
key = code;
}
}
if (key == ui::VKEY_UNKNOWN) {
LOG(WARNING) << shortcut << " doesn't contain a valid key";
return false;
}
*accelerator = ui::Accelerator(key, modifiers);
accelerator->shifted_char = shifted_char;
return true;
}
void GenerateAcceleratorTable(AcceleratorTable* table,
electron::ElectronMenuModel* model) {
size_t count = model->GetItemCount();
for (size_t i = 0; i < count; ++i) {
electron::ElectronMenuModel::ItemType type = model->GetTypeAt(i);
if (type == electron::ElectronMenuModel::TYPE_SUBMENU) {
auto* submodel = model->GetSubmenuModelAt(i);
GenerateAcceleratorTable(table, submodel);
} else {
ui::Accelerator accelerator;
if (model->ShouldRegisterAcceleratorAt(i)) {
if (model->GetAcceleratorAtWithParams(i, true, &accelerator)) {
MenuItem item = {i, model};
(*table)[accelerator] = item;
}
}
}
}
}
bool TriggerAcceleratorTableCommand(AcceleratorTable* table,
const ui::Accelerator& accelerator) {
const auto iter = table->find(accelerator);
if (iter != std::end(*table)) {
const accelerator_util::MenuItem& item = iter->second;
if (item.model->IsEnabledAt(item.position)) {
const auto event_flags =
accelerator.MaskOutKeyEventFlags(accelerator.modifiers());
item.model->ActivatedAt(item.position, event_flags);
return true;
}
}
return false;
}
} // namespace accelerator_util