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Decouple input processing from Term 

Should make input processing much more easily tested.
This commit is contained in:
Joe Wilm 2017-02-01 22:13:08 -08:00 committed by Joe Wilm
parent 40d7c0c434
commit d0283141b5
3 changed files with 151 additions and 89 deletions
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23
copypasta/src/lib.rs
View File

@ -4,6 +4,12 @@
#[cfg(target_os = "macos")]
#[macro_use] extern crate objc;
/// An enumeration describing available clipboard buffers
pub enum Buffer {
Primary,
Selection
}
/// Types that can get the system clipboard contents
pub trait Load : Sized {
/// Errors encountered when working with a clipboard. Each implementation is
@ -24,6 +30,13 @@ pub trait Load : Sized {
fn load_selection(&self) -> Result<String, Self::Err> {
self.load_primary()
}
fn load(&self, buffer: Buffer) -> Result<String, Self::Err> {
match buffer {
Buffer::Selection => self.load_selection(),
Buffer::Primary => self.load_primary(),
}
}
}
/// Types that can set the system clipboard contents
@ -38,6 +51,16 @@ pub trait Store : Load {
/// Sets the secondary clipboard contents
fn store_selection<S>(&mut self, contents: S) -> Result<(), Self::Err>
where S: Into<String>;
/// Store into the specified `buffer`.
fn store<S>(&mut self, contents: S, buffer: Buffer) -> Result<(), Self::Err>
where S: Into<String>
{
match buffer {
Buffer::Selection => self.store_selection(contents),
Buffer::Primary => self.store_primary(contents),
}
}
}
#[cfg(any(target_os = "linux", target_os = "freebsd"))]

60
src/event.rs
View File

@ -7,16 +7,18 @@ use std::sync::mpsc;
use serde_json as json;
use parking_lot::MutexGuard;
use glutin::{self, ElementState};
use copypasta::{Clipboard, Load, Store};
use config::Config;
use cli::Options;
use display::OnResize;
use index::{Line, Column, Side};
use input::{self, ActionContext, MouseBinding, KeyBinding};
use index::{Line, Column, Side, Point};
use input::{self, MouseBinding, KeyBinding};
use selection::Selection;
use sync::FairMutex;
use term::{Term, SizeInfo};
use term::{Term, SizeInfo, TermMode};
use util::limit;
use util::fmt::Red;
use window::Window;
/// Byte sequences are sent to a `Notify` in response to some events
@ -27,6 +29,54 @@ pub trait Notify {
fn notify<B: Into<Cow<'static, [u8]>>>(&mut self, B);
}
pub struct ActionContext<'a, N: 'a> {
pub notifier: &'a mut N,
pub terminal: &'a mut Term,
pub selection: &'a mut Selection,
pub size_info: &'a SizeInfo,
pub mouse: &'a mut Mouse,
}
impl<'a, N: Notify + 'a> input::ActionContext for ActionContext<'a, N> {
fn write_to_pty<B: Into<Cow<'static, [u8]>>>(&mut self, val: B) {
self.notifier.notify(val);
}
fn terminal_mode(&self) -> TermMode {
*self.terminal.mode()
}
fn size_info(&self) -> SizeInfo {
*self.size_info
}
fn copy_selection(&self, buffer: ::copypasta::Buffer) {
if let Some(selection) = self.selection.span() {
let buf = self.terminal.string_from_selection(&selection);
if !buf.is_empty() {
Clipboard::new()
.and_then(|mut clipboard| clipboard.store(buf, buffer))
.unwrap_or_else(|err| {
warn!("Error storing selection to clipboard. {}", Red(err));
});
}
}
}
fn clear_selection(&mut self) {
self.selection.clear();
}
fn update_selection(&mut self, point: Point, side: Side) {
self.selection.update(point, side);
}
#[inline]
fn mouse_mut(&mut self) -> &mut Mouse {
self.mouse
}
}
/// State of the mouse
pub struct Mouse {
pub x: u32,
@ -107,7 +157,7 @@ impl<N: Notify> Processor<N> {
///
/// Doesn't take self mutably due to borrow checking. Kinda uggo but w/e.
fn handle_event<'a>(
processor: &mut input::Processor<'a, N>,
processor: &mut input::Processor<'a, ActionContext<'a, N>>,
event: glutin::Event,
ref_test: bool,
resize_tx: &mpsc::Sender<(u32, u32)>,
@ -183,7 +233,7 @@ impl<N: Notify> Processor<N> {
{
// Ditto on lazy initialization for context and processor.
let context;
let mut processor: input::Processor<N>;
let mut processor: input::Processor<ActionContext<N>>;
// Convenience macro which curries most arguments to handle_event.
macro_rules! process {

157
src/input.rs
View File

@ -18,18 +18,18 @@
//! In order to figure that out, state about which modifier keys are pressed
//! needs to be tracked. Additionally, we need a bit of a state machine to
//! determine what to do when a non-modifier key is pressed.
use std::borrow::Cow;
use std::mem;
use copypasta::{Clipboard, Load, Store};
use copypasta::{Clipboard, Load, Buffer};
use glutin::{ElementState, VirtualKeyCode, MouseButton};
use glutin::{Mods, mods};
use glutin::{TouchPhase, MouseScrollDelta};
use event::{Mouse, Notify};
use event::{Mouse};
use index::{Line, Column, Side, Point};
use selection::Selection;
use term::mode::{self, TermMode};
use term::{self, Term};
use term::SizeInfo;
use util::fmt::Red;
/// Processes input from glutin.
@ -38,18 +38,20 @@ use util::fmt::Red;
/// are activated.
///
/// TODO also need terminal state when processing input
pub struct Processor<'a, N: 'a> {
pub struct Processor<'a, A: 'a> {
pub key_bindings: &'a [KeyBinding],
pub mouse_bindings: &'a [MouseBinding],
pub ctx: ActionContext<'a, N>,
pub ctx: A,
}
pub struct ActionContext<'a, N: 'a> {
pub notifier: &'a mut N,
pub terminal: &'a mut Term,
pub selection: &'a mut Selection,
pub mouse: &'a mut Mouse,
pub size_info: &'a term::SizeInfo,
pub trait ActionContext {
fn write_to_pty<B: Into<Cow<'static, [u8]>>>(&mut self, B);
fn terminal_mode(&self) -> TermMode;
fn size_info(&self) -> SizeInfo;
fn copy_selection(&self, Buffer);
fn clear_selection(&mut self);
fn update_selection(&mut self, Point, Side);
fn mouse_mut(&mut self) -> &mut Mouse;
}
/// Describes a state and action to take in that state
@ -85,7 +87,7 @@ impl<T: Eq> Binding<T> {
#[inline]
fn is_triggered_by(
&self,
mode: &TermMode,
mode: TermMode,
mods: &Mods,
input: &T
) -> bool {
@ -93,8 +95,8 @@ impl<T: Eq> Binding<T> {
// the most likely item to fail so prioritizing it here allows more
// checks to be short circuited.
self.trigger == *input &&
self.mode_matches(mode) &&
self.not_mode_matches(mode) &&
self.mode_matches(&mode) &&
self.not_mode_matches(&mode) &&
self.mods_match(mods)
}
}
@ -102,7 +104,7 @@ impl<T: Eq> Binding<T> {
impl<T> Binding<T> {
/// Execute the action associate with this binding
#[inline]
fn execute<'a, N: Notify>(&self, ctx: &mut ActionContext<'a, N>) {
fn execute<A: ActionContext>(&self, ctx: &mut A) {
self.action.execute(ctx)
}
@ -139,22 +141,13 @@ pub enum Action {
impl Action {
#[inline]
fn execute<'a, N: Notify>(&self, ctx: &mut ActionContext<'a, N>) {
fn execute<A: ActionContext>(&self, ctx: &mut A) {
match *self {
Action::Esc(ref s) => {
ctx.notifier.notify(s.clone().into_bytes())
ctx.write_to_pty(s.clone().into_bytes())
},
Action::Copy => {
if let Some(selection) = ctx.selection.span() {
let buf = ctx.terminal.string_from_selection(&selection);
if !buf.is_empty() {
Clipboard::new()
.and_then(|mut clipboard| clipboard.store_primary(buf))
.unwrap_or_else(|err| {
warn!("Error storing selection to clipboard. {}", Red(err));
});
}
}
ctx.copy_selection(Buffer::Primary);
},
Action::Paste => {
Clipboard::new()
@ -175,13 +168,13 @@ impl Action {
}
}
fn paste<'a, N: Notify>(&self, ctx: &mut ActionContext<'a, N>, contents: String) {
if ctx.terminal.mode().contains(mode::BRACKETED_PASTE) {
ctx.notifier.notify(&b"\x1b[200~"[..]);
ctx.notifier.notify(contents.into_bytes());
ctx.notifier.notify(&b"\x1b[201~"[..]);
fn paste<A: ActionContext>(&self, ctx: &mut A, contents: String) {
if ctx.terminal_mode().contains(mode::BRACKETED_PASTE) {
ctx.write_to_pty(&b"\x1b[200~"[..]);
ctx.write_to_pty(contents.into_bytes());
ctx.write_to_pty(&b"\x1b[201~"[..]);
} else {
ctx.notifier.notify(contents.into_bytes());
ctx.write_to_pty(contents.into_bytes());
}
}
}
@ -192,35 +185,40 @@ impl From<&'static str> for Action {
}
}
impl<'a, N: Notify + 'a> Processor<'a, N> {
impl<'a, A: ActionContext + 'a> Processor<'a, A> {
#[inline]
pub fn mouse_moved(&mut self, x: u32, y: u32) {
self.ctx.mouse.x = x;
self.ctx.mouse.y = y;
self.ctx.mouse_mut().x = x;
self.ctx.mouse_mut().y = y;
if let Some(point) = self.ctx.size_info.pixels_to_coords(x as usize, y as usize) {
let prev_line = mem::replace(&mut self.ctx.mouse.line, point.line);
let prev_col = mem::replace(&mut self.ctx.mouse.column, point.col);
let size_info = self.ctx.size_info();
if let Some(point) = size_info.pixels_to_coords(x as usize, y as usize) {
let prev_line = mem::replace(&mut self.ctx.mouse_mut().line, point.line);
let prev_col = mem::replace(&mut self.ctx.mouse_mut().column, point.col);
let cell_x = x as usize % self.ctx.size_info.cell_width as usize;
let half_cell_width = (self.ctx.size_info.cell_width / 2.0) as usize;
let cell_x = x as usize % size_info.cell_width as usize;
let half_cell_width = (size_info.cell_width / 2.0) as usize;
self.ctx.mouse.cell_side = if cell_x > half_cell_width {
let cell_side = if cell_x > half_cell_width {
Side::Right
} else {
Side::Left
};
self.ctx.mouse_mut().cell_side = cell_side;
if self.ctx.mouse.left_button_state == ElementState::Pressed {
if self.ctx.mouse_mut().left_button_state == ElementState::Pressed {
let report_mode = mode::MOUSE_REPORT_CLICK | mode::MOUSE_MOTION;
if !self.ctx.terminal.mode().intersects(report_mode) {
self.ctx.selection.update(Point {
if !self.ctx.terminal_mode().intersects(report_mode) {
self.ctx.update_selection(Point {
line: point.line,
col: point.col
}, self.ctx.mouse.cell_side);
} else if self.ctx.terminal.mode().contains(mode::MOUSE_MOTION)
}, cell_side);
} else if self.ctx.terminal_mode().contains(mode::MOUSE_MOTION)
// Only report motion when changing cells
&& (prev_line != self.ctx.mouse.line || prev_col != self.ctx.mouse.column) {
&& (
prev_line != self.ctx.mouse_mut().line
|| prev_col != self.ctx.mouse_mut().column
) {
self.mouse_report(32);
}
}
@ -228,7 +226,7 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
}
pub fn normal_mouse_report(&mut self, button: u8) {
let (line, column) = (self.ctx.mouse.line, self.ctx.mouse.column);
let (line, column) = (self.ctx.mouse_mut().line, self.ctx.mouse_mut().column);
if line < Line(223) && column < Column(223) {
let msg = vec![
@ -240,21 +238,21 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
32 + 1 + line.0 as u8,
];
self.ctx.notifier.notify(msg);
self.ctx.write_to_pty(msg);
}
}
pub fn sgr_mouse_report(&mut self, button: u8, release: bool) {
let (line, column) = (self.ctx.mouse.line, self.ctx.mouse.column);
let (line, column) = (self.ctx.mouse_mut().line, self.ctx.mouse_mut().column);
let c = if release { 'm' } else { 'M' };
let msg = format!("\x1b[<{};{};{}{}", button, column + 1, line + 1, c);
self.ctx.notifier.notify(msg.into_bytes());
self.ctx.write_to_pty(msg.into_bytes());
}
pub fn mouse_report(&mut self, button: u8) {
if self.ctx.terminal.mode().contains(mode::SGR_MOUSE) {
let release = self.ctx.mouse.left_button_state != ElementState::Pressed;
if self.ctx.terminal_mode().contains(mode::SGR_MOUSE) {
let release = self.ctx.mouse_mut().left_button_state != ElementState::Pressed;
self.sgr_mouse_report(button, release);
} else {
self.normal_mouse_report(button);
@ -262,30 +260,21 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
}
pub fn on_mouse_press(&mut self) {
if self.ctx.terminal.mode().intersects(mode::MOUSE_REPORT_CLICK | mode::MOUSE_MOTION) {
if self.ctx.terminal_mode().intersects(mode::MOUSE_REPORT_CLICK | mode::MOUSE_MOTION) {
self.mouse_report(0);
return;
}
self.ctx.selection.clear();
self.ctx.clear_selection();
}
pub fn on_mouse_release(&mut self) {
if self.ctx.terminal.mode().intersects(mode::MOUSE_REPORT_CLICK | mode::MOUSE_MOTION) {
if self.ctx.terminal_mode().intersects(mode::MOUSE_REPORT_CLICK | mode::MOUSE_MOTION) {
self.mouse_report(3);
return;
}
if let Some(selection) = self.ctx.selection.span() {
let buf = self.ctx.terminal.string_from_selection(&selection);
if !buf.is_empty() {
Clipboard::new()
.and_then(|mut clipboard| clipboard.store_selection(buf))
.unwrap_or_else(|err| {
warn!("Error storing selection to clipboard. {}", Red(err));
});
}
}
self.ctx.copy_selection(Buffer::Selection);
}
pub fn on_mouse_wheel(&mut self, delta: MouseScrollDelta, phase: TouchPhase) {
@ -305,18 +294,18 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
match phase {
TouchPhase::Started => {
// Reset offset to zero
self.ctx.mouse.scroll_px = 0;
self.ctx.mouse_mut().scroll_px = 0;
},
TouchPhase::Moved => {
self.ctx.mouse.scroll_px += y as i32;
let height = self.ctx.size_info.cell_height as i32;
self.ctx.mouse_mut().scroll_px += y as i32;
let height = self.ctx.size_info().cell_height as i32;
while self.ctx.mouse.scroll_px.abs() >= height {
let button = if self.ctx.mouse.scroll_px > 0 {
self.ctx.mouse.scroll_px -= height;
while self.ctx.mouse_mut().scroll_px.abs() >= height {
let button = if self.ctx.mouse_mut().scroll_px > 0 {
self.ctx.mouse_mut().scroll_px -= height;
64
} else {
self.ctx.mouse.scroll_px += height;
self.ctx.mouse_mut().scroll_px += height;
65
};
@ -331,9 +320,9 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
pub fn mouse_input(&mut self, state: ElementState, button: MouseButton) {
if let MouseButton::Left = button {
let state = mem::replace(&mut self.ctx.mouse.left_button_state, state);
if self.ctx.mouse.left_button_state != state {
match self.ctx.mouse.left_button_state {
let state = mem::replace(&mut self.ctx.mouse_mut().left_button_state, state);
if self.ctx.mouse_mut().left_button_state != state {
match self.ctx.mouse_mut().left_button_state {
ElementState::Pressed => {
self.on_mouse_press();
},
@ -377,8 +366,8 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
string.insert(0, '\x1b');
}
self.ctx.notifier.notify(string.into_bytes());
self.ctx.selection.clear();
self.ctx.write_to_pty(string.into_bytes());
self.ctx.clear_selection();
}
}
@ -390,7 +379,7 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
/// Returns true if an action is executed.
fn process_key_bindings(&mut self, mods: Mods, key: VirtualKeyCode) -> bool {
for binding in self.key_bindings {
if binding.is_triggered_by(self.ctx.terminal.mode(), &mods, &key) {
if binding.is_triggered_by(self.ctx.terminal_mode(), &mods, &key) {
// binding was triggered; run the action
binding.execute(&mut self.ctx);
return true;
@ -408,7 +397,7 @@ impl<'a, N: Notify + 'a> Processor<'a, N> {
/// Returns true if an action is executed.
fn process_mouse_bindings(&mut self, mods: Mods, button: MouseButton) -> bool {
for binding in self.mouse_bindings {
if binding.is_triggered_by(self.ctx.terminal.mode(), &mods, &button) {
if binding.is_triggered_by(self.ctx.terminal_mode(), &mods, &button) {
// binding was triggered; run the action
binding.execute(&mut self.ctx);
return true;
@ -440,9 +429,9 @@ mod tests {
#[test]
fn $name() {
if $triggers {
assert!($binding.is_triggered_by(&$mode, &$mods, &KEY));
assert!($binding.is_triggered_by($mode, &$mods, &KEY));
} else {
assert!(!$binding.is_triggered_by(&$mode, &$mods, &KEY));
assert!(!$binding.is_triggered_by($mode, &$mods, &KEY));
}
}
}