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/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/CharacterTypes.h>
#include <LibWeb/UIEvents/KeyboardEvent.h>
namespace Web::UIEvents {
// https://www.w3.org/TR/uievents/#determine-keydown-keyup-keyCode
static unsigned long determine_key_code(KeyCode platform_key, u32 code_point)
{
// If input key when pressed without modifiers would insert a numerical character (0-9), return the ASCII code of that numerical character.
if (is_ascii_digit(code_point))
return code_point;
// If input key when pressed without modifiers would insert a lower case character in the a-z alphabetical range, return the ASCII code of the upper case equivalent.
if (is_ascii_lower_alpha(code_point))
return to_ascii_uppercase(code_point);
// If the key’s function, as determined in an implementation-specific way, corresponds to one of the keys in the §8.3.3 Fixed virtual key codes table, return the corresponding key code.
// https://www.w3.org/TR/uievents/#fixed-virtual-key-codes
switch (platform_key) {
case KeyCode::Key_Backspace:
return 8;
case KeyCode::Key_Tab:
return 9;
case KeyCode::Key_Return:
return 13;
case KeyCode::Key_Shift:
return 16;
case KeyCode::Key_Control:
return 17;
case KeyCode::Key_Alt:
return 18;
case KeyCode::Key_CapsLock:
return 20;
case KeyCode::Key_Escape:
return 27;
case KeyCode::Key_Space:
return 32;
case KeyCode::Key_PageUp:
return 33;
case KeyCode::Key_PageDown:
return 34;
case KeyCode::Key_End:
return 35;
case KeyCode::Key_Home:
return 36;
case KeyCode::Key_Left:
return 37;
case KeyCode::Key_Up:
return 38;
case KeyCode::Key_Right:
return 39;
case KeyCode::Key_Down:
return 40;
default:
break;
}
// Return the virtual key code from the operating system.
return platform_key;
}
NonnullRefPtr<KeyboardEvent> KeyboardEvent::create_from_platform_event(FlyString const& event_name, KeyCode platform_key, unsigned modifiers, u32 code_point)
{
// FIXME: Figure out what these should actually contain.
String event_key = key_code_to_string(platform_key);
String event_code = "FIXME";
auto key_code = determine_key_code(platform_key, code_point);
KeyboardEventInit event_init {};
event_init.key = move(event_key);
event_init.code = move(event_code);
event_init.location = 0;
event_init.ctrl_key = modifiers & Mod_Ctrl;
event_init.shift_key = modifiers & Mod_Shift;
event_init.alt_key = modifiers & Mod_Alt;
event_init.meta_key = false;
event_init.repeat = false;
event_init.is_composing = false;
event_init.key_code = key_code;
event_init.char_code = code_point;
event_init.bubbles = true;
event_init.cancelable = true;
event_init.composed = true;
return KeyboardEvent::create(event_name, event_init);
}
bool KeyboardEvent::get_modifier_state(String const& key_arg)
{
if (key_arg == "Alt")
return m_alt_key;
if (key_arg == "Control")
return m_ctrl_key;
if (key_arg == "Shift")
return m_shift_key;
if (key_arg == "Meta")
return m_meta_key;
return false;
}
}
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