84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
// Copyright (c) 2013 GitHub, Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "browser/accelerator_util.h"
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#include <string>
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#include "base/string_util.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/string_split.h"
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#include "ui/base/accelerators/accelerator.h"
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namespace accelerator_util {
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namespace {
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// For Mac, we convert "Ctrl" to "Command" and "MacCtrl" to "Ctrl". Other
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// platforms leave the shortcut untouched.
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std::string NormalizeShortcutSuggestion(const std::string& suggestion) {
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#if !defined(OS_MACOSX)
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return suggestion;
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#endif
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std::string key;
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std::vector<std::string> tokens;
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base::SplitString(suggestion, '+', &tokens);
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for (size_t i = 0; i < tokens.size(); i++) {
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if (tokens[i] == "Ctrl")
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tokens[i] = "Command";
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else if (tokens[i] == "MacCtrl")
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tokens[i] = "Ctrl";
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}
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return JoinString(tokens, '+');
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}
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} // namespace
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bool StringToAccelerator(const std::string& description,
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ui::Accelerator* accelerator) {
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std::string shortcut(NormalizeShortcutSuggestion(description));
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std::vector<std::string> tokens;
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base::SplitString(shortcut, '+', &tokens);
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if (tokens.size() < 2 || tokens.size() > 3) {
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return false;
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}
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// Now, parse it into an accelerator.
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int modifiers = ui::EF_NONE;
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ui::KeyboardCode key = ui::VKEY_UNKNOWN;
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for (size_t i = 0; i < tokens.size(); i++) {
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if (tokens[i] == "Ctrl") {
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modifiers |= ui::EF_CONTROL_DOWN;
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} else if (tokens[i] == "Command") {
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modifiers |= ui::EF_COMMAND_DOWN;
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} else if (tokens[i] == "Alt") {
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modifiers |= ui::EF_ALT_DOWN;
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} else if (tokens[i] == "Shift") {
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modifiers |= ui::EF_SHIFT_DOWN;
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} else if (tokens[i].size() == 1) {
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if (key != ui::VKEY_UNKNOWN) {
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// Multiple key assignments.
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key = ui::VKEY_UNKNOWN;
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break;
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}
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if (tokens[i][0] >= 'A' && tokens[i][0] <= 'Z') {
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key = static_cast<ui::KeyboardCode>(ui::VKEY_A + (tokens[i][0] - 'A'));
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} else if (tokens[i][0] >= '0' && tokens[i][0] <= '9') {
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key = static_cast<ui::KeyboardCode>(ui::VKEY_0 + (tokens[i][0] - '0'));
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} else {
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key = ui::VKEY_UNKNOWN;
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break;
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}
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} else {
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return false;
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}
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}
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*accelerator = ui::Accelerator(key, modifiers);
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return true;
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}
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} // namespace accelerator_util
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