mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/*
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* Copyright (C) 2023 Kyle Reed
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __BINDER_H__
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#define __BINDER_H__
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#include "ui.hpp"
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#include "ui_navigation.hpp"
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#include "ui_widget.hpp"
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namespace ui {
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/* Default no-op binding callback. */
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struct NoOp {
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NoOp() {}
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template <typename T>
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void operator()(T) const {}
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};
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/* The gist of the bind functions is to bind a control
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* to a value.
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* bind(control, value)
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*
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* An optional callback can be specified which will be called
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* when the control's value is changed.
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* bind(control, value, [](auto new_val) { ... });
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*
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* Some controls need a reference to the NavigationView so
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* edit dialogs (like text_prompt) can be launched.
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* bind(control, value, nav, [](auto new_val) { ... });
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*
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* Be careful with lifetime of captured objects. Most things
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* are captured by reference so the caller will need to ensure
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* adequate lifetime of the referenced instances.
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*/
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template <typename T, typename Fn = NoOp>
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void bind(NumberField& field, T& value, Fn fn = Fn{}) {
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field.set_value(value);
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field.on_change = [&value, fn](int32_t v) {
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value = v;
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fn(value);
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};
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}
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template <typename T, typename Fn = NoOp>
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void bind(OptionsField& field, T& value, Fn fn = Fn{}) {
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field.set_by_value(static_cast<int32_t>(value));
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field.on_change = [&value, fn](size_t, auto v) {
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value = static_cast<T>(v);
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fn(value);
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};
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}
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template <typename T, typename Fn = NoOp>
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void bind(FrequencyField& field, T& value, NavigationView& nav, Fn fn = Fn{}) {
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field.set_value(value);
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field.on_change = [&value, fn](rf::Frequency f) {
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value = f;
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fn(value);
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};
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field.on_edit = [&field, &value, &nav]() {
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auto freq_view = nav.push<FrequencyKeypadView>(value);
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freq_view->on_changed = [&field](rf::Frequency f) {
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field.set_value(f);
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};
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};
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}
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template <typename T, typename Fn = NoOp>
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void bind(TextField& field, T& value, NavigationView& nav, Fn fn = Fn{}) {
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field.set_text(value);
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field.on_change = [&value, fn](TextField& tf) {
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value = tf.get_text();
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fn(value);
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};
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// text_prompt needs a mutable working buffer.
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// Capture a new string and make the lambda mutable so it can be modified.
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field.on_select = [&nav, buf = std::string{}](TextField& tf) mutable {
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buf = tf.get_text();
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text_prompt(nav, buf, /*max_length*/ 255,
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[&tf](std::string& str) {
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tf.set_text(str);
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});
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};
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}
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} // namespace ui
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#endif /*__BINDER_H__*/ |