e2e7c4d574
In a bunch of cases, this actually ends up simplifying the code as
to_number will handle something such as:
```
Optional<I> opt;
if constexpr (IsSigned<I>)
opt = view.to_int<I>();
else
opt = view.to_uint<I>();
```
For us.
The main goal here however is to have a single generic number conversion
API between all of the String classes.
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "NumericInput.h"
|
|
#include <ctype.h>
|
|
|
|
NumericInput::NumericInput()
|
|
{
|
|
set_text("0"sv);
|
|
|
|
on_change = [&] {
|
|
auto number_opt = text().to_number<int>();
|
|
if (number_opt.has_value()) {
|
|
set_current_number(number_opt.value(), GUI::AllowCallback::No);
|
|
return;
|
|
}
|
|
|
|
StringBuilder builder;
|
|
bool first = true;
|
|
for (auto& ch : text()) {
|
|
if (isdigit(ch) || (first && ((ch == '-' && m_min_number < 0) || ch == '+')))
|
|
builder.append(ch);
|
|
first = false;
|
|
}
|
|
|
|
auto new_number_opt = builder.to_byte_string().to_number<int>();
|
|
if (!new_number_opt.has_value()) {
|
|
m_needs_text_reset = true;
|
|
return;
|
|
} else {
|
|
m_needs_text_reset = false;
|
|
}
|
|
|
|
set_text(builder.to_byte_string());
|
|
set_current_number(new_number_opt.value(), GUI::AllowCallback::No);
|
|
};
|
|
|
|
on_up_pressed = [&] {
|
|
if (m_current_number < m_max_number)
|
|
set_current_number(m_current_number + 1);
|
|
};
|
|
|
|
on_down_pressed = [&] {
|
|
if (m_current_number > m_min_number)
|
|
set_current_number(m_current_number - 1);
|
|
};
|
|
|
|
on_focusout = [&] { on_focus_lost(); };
|
|
on_return_pressed = [&] { on_focus_lost(); };
|
|
on_escape_pressed = [&] { on_focus_lost(); };
|
|
}
|
|
|
|
void NumericInput::set_min_number(i32 number)
|
|
{
|
|
m_min_number = number;
|
|
if (m_current_number < number)
|
|
set_current_number(number);
|
|
}
|
|
|
|
void NumericInput::set_max_number(i32 number)
|
|
{
|
|
m_max_number = number;
|
|
if (m_current_number > number)
|
|
set_current_number(number);
|
|
}
|
|
|
|
void NumericInput::on_focus_lost()
|
|
{
|
|
if (m_needs_text_reset) {
|
|
set_text(ByteString::number(m_current_number));
|
|
m_needs_text_reset = false;
|
|
}
|
|
if (on_number_changed)
|
|
on_number_changed(m_current_number);
|
|
}
|
|
|
|
void NumericInput::set_current_number(i32 number, GUI::AllowCallback allow_callback)
|
|
{
|
|
if (number == m_current_number)
|
|
return;
|
|
|
|
m_current_number = clamp(number, m_min_number, m_max_number);
|
|
set_text(ByteString::number(m_current_number));
|
|
if (on_number_changed && allow_callback == GUI::AllowCallback::Yes)
|
|
on_number_changed(m_current_number);
|
|
}
|