refactor app.rs into module: app

1 files changed, 175 insertions, 0 deletions

diff --git a/src/app/impl_view.rs b/src/app/impl_view.rs
new file mode 100644
index 0000000..904403b
--- /dev/null
+++ b/src/app/impl_view.rs
@@ -0,0 +1,175 @@
+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::view::View;
+use cursive::{Printer, Vec2};
+use notify::DebouncedEvent;
+
+use crate::app::App;
+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
+    }
+
+    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 = {
+            if self.habits.len() > 0 {
+                grid_width * (view_width + 2)
+            } else {
+                0
+            }
+        };
+        let height = {
+            if self.habits.len() > 0 {
+                (view_height as f64 * (self.habits.len() as f64 / grid_width as f64).ceil())
+                    as usize
+                    + 2 // to acoomodate statusline and message line
+            } else {
+                0
+            }
+        };
+        Vec2::new(width, height)
+    }
+
+    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);
+            }
+            _ => {}
+        };
+        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);
+            }
+
+            /* 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)
+            }
+        }
+    }
+}