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use std::f64;
use std::fs::File;
use std::io::prelude::*;
use std::path::PathBuf;
use cursive::direction::{Absolute, Direction};
use cursive::event::{Event, EventResult, Key};
use cursive::theme::Color;
use cursive::view::View;
use cursive::{Printer, Vec2};
use notify::DebouncedEvent;
use crate::app::{App, MessageKind};
use crate::habit::{HabitWrapper, ViewMode};
use crate::utils;
use crate::CONFIGURATION;
impl View for App {
fn draw(&self, printer: &Printer) {
let grid_width = CONFIGURATION.grid_width;
let view_width = CONFIGURATION.view_width;
let view_height = CONFIGURATION.view_height;
let mut offset = Vec2::zero();
for (idx, habit) in self.habits.iter().enumerate() {
if idx >= grid_width && idx % grid_width == 0 {
offset = offset.map_y(|y| y + view_height).map_x(|_| 0);
}
habit.draw(&printer.offset(offset).focused(self.focus == idx));
offset = offset.map_x(|x| x + view_width + 2);
}
offset = offset.map_x(|_| 0).map_y(|_| self.max_size().y - 2);
let status = self.status();
printer.print(offset, &status.0); // left status
let full = self.max_size().x;
offset = offset.map_x(|_| full - status.1.len());
printer.print(offset, &status.1); // right status
offset = offset.map_x(|_| 0).map_y(|_| self.max_size().y - 1);
printer.with_style(Color::from(self.message.read().unwrap().kind()), |p| {
p.print(offset, self.message.read().unwrap().contents())
});
}
fn required_size(&mut self, _: Vec2) -> Vec2 {
let grid_width = CONFIGURATION.grid_width;
let view_width = CONFIGURATION.view_width;
let view_height = CONFIGURATION.view_height;
let width = grid_width * (view_width + 2);
let height = {
if self.habits.len() > 0 {
(view_height as f64 * (self.habits.len() as f64 / grid_width as f64).ceil())
as usize
} else {
0
}
};
Vec2::new(width, height + 2)
}
fn take_focus(&mut self, _: Direction) -> bool {
false
}
fn on_event(&mut self, e: Event) -> EventResult {
match self.file_event_recv.try_recv() {
Ok(DebouncedEvent::Write(_)) => {
let read_from_file = |file: PathBuf| -> Vec<Box<dyn HabitWrapper>> {
if let Ok(ref mut f) = File::open(file) {
let mut j = String::new();
f.read_to_string(&mut j);
return serde_json::from_str(&j).unwrap();
} else {
return Vec::new();
}
};
let auto = read_from_file(utils::auto_habit_file());
self.habits.retain(|x| !x.is_auto());
self.habits.extend(auto);
}
_ => {}
};
if self.habits.is_empty() {
return EventResult::Ignored;
}
match e {
Event::Key(Key::Right) | Event::Key(Key::Tab) | Event::Char('l') => {
self.set_focus(Absolute::Right);
return EventResult::Consumed(None);
}
Event::Key(Key::Left) | Event::Shift(Key::Tab) | Event::Char('h') => {
self.set_focus(Absolute::Left);
return EventResult::Consumed(None);
}
Event::Key(Key::Up) | Event::Char('k') => {
self.set_focus(Absolute::Up);
return EventResult::Consumed(None);
}
Event::Key(Key::Down) | Event::Char('j') => {
self.set_focus(Absolute::Down);
return EventResult::Consumed(None);
}
Event::Char('d') => {
if self.habits.is_empty() {
return EventResult::Consumed(None);
}
self.habits.remove(self.focus);
self.focus = self.focus.checked_sub(1).unwrap_or(0);
return EventResult::Consumed(None);
}
Event::Char('w') => {
// helper bind to test write to file
let j = serde_json::to_string_pretty(&self.habits).unwrap();
let mut file = File::create("foo.txt").unwrap();
file.write_all(j.as_bytes()).unwrap();
return EventResult::Consumed(None);
}
Event::Char('q') => {
self.save_state();
return EventResult::with_cb(|s| s.quit());
}
Event::Char('v') => {
if self.habits.is_empty() {
return EventResult::Consumed(None);
}
if self.habits[self.focus].view_mode() == ViewMode::Week {
self.set_mode(ViewMode::Day)
} else {
self.set_mode(ViewMode::Week)
}
return EventResult::Consumed(None);
}
Event::Char('V') => {
for habit in self.habits.iter_mut() {
habit.set_view_mode(ViewMode::Week);
}
return EventResult::Consumed(None);
}
Event::Key(Key::Esc) => {
for habit in self.habits.iter_mut() {
habit.set_view_mode(ViewMode::Day);
}
return EventResult::Consumed(None);
}
/* We want sifting to be an app level function,
* that later trickles down into each habit
* */
Event::Char(']') => {
self.sift_forward();
return EventResult::Consumed(None);
}
Event::Char('[') => {
self.sift_backward();
return EventResult::Consumed(None);
}
Event::Char('}') => {
self.set_view_month_offset(0);
return EventResult::Consumed(None);
}
Event::CtrlChar('l') => {
self.message.write().unwrap().clear();
self.message.write().unwrap().set_kind(MessageKind::Info);
return EventResult::Consumed(None);
}
Event::CtrlChar('c') => {
self.message.write().unwrap().set_message("Use the :q command to quit");
return EventResult::Consumed(None);
}
/* Every keybind that is not caught by App trickles
* down to the focused habit. We sift back to today
* before performing any action, "refocusing" the cursor
* */
_ => {
if self.habits.is_empty() {
return EventResult::Ignored;
}
self.set_view_month_offset(0);
self.habits[self.focus].on_event(e)
}
}
}
}
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