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use std::cmp::Reverse;
use std::collections::HashMap;
use std::sync::Arc;
use crate::input::state::{HookState, WindowState};
use crate::input::{Hook, InputHookCtrl, InputHookID, InputHookTargetID, NO_HOOK_WEIGHT};
use crate::interface::Interface;
use crate::window::WindowID;
pub(in crate::input) fn cursor(
interface: &Arc<Interface>,
hooks: &mut HashMap<InputHookID, Hook>,
win_state: &mut HashMap<WindowID, WindowState>,
win: WindowID,
x: f32,
y: f32,
force: bool,
) {
let window_state = win_state
.entry(win)
.or_insert_with(|| WindowState::new(win));
if window_state.update_cursor_pos(x, y) || force {
let inside_bin_ids = interface.get_bin_ids_atop(win, x, y);
let focused_bin_id = window_state.focused_bin_id();
let mut call_leave_on: Vec<(i16, InputHookID, &mut Hook)> = Vec::new();
let mut enter: Vec<(i16, InputHookID, &mut Hook)> = Vec::new();
let mut call_cursor_on: Vec<(i16, InputHookID, &mut Hook)> = Vec::new();
for (hook_id, hook) in hooks.iter_mut() {
let bin_id_op = hook.bin_id();
match &mut hook.state {
HookState::Enter {
weight,
top,
inside,
..
} => {
let bin_id = match bin_id_op {
Some(some) => some,
None => continue,
};
if window_state.is_cursor_captured() {
continue;
}
let mut inside_i_op: Option<usize> = None;
for (i, inside_id) in inside_bin_ids.iter().enumerate() {
if bin_id == *inside_id {
inside_i_op = Some(i);
break;
}
}
let inside_i = match inside_i_op {
Some(some) => some,
None => {
*inside = false;
continue;
},
};
if *top {
if inside_i == 0 {
enter.push((*weight, *hook_id, hook));
} else {
*inside = false;
}
} else {
enter.push((*weight, *hook_id, hook));
}
},
HookState::Leave {
weight,
top,
inside,
..
} => {
let bin_id = match bin_id_op {
Some(some) => some,
None => continue,
};
if window_state.is_cursor_captured() {
if *inside {
call_leave_on.push((*weight, *hook_id, hook));
}
continue;
}
let mut inside_i_op: Option<usize> = None;
for (i, inside_id) in inside_bin_ids.iter().enumerate() {
if bin_id == *inside_id {
inside_i_op = Some(i);
break;
}
}
match inside_i_op {
Some(inside_i) => {
if *top {
if inside_i != 0 {
if *inside {
call_leave_on.push((*weight, *hook_id, hook));
}
} else {
enter.push((*weight, *hook_id, hook));
}
} else {
enter.push((*weight, *hook_id, hook));
}
},
None => {
if *inside {
call_leave_on.push((*weight, *hook_id, hook));
}
},
}
},
HookState::Cursor {
weight,
top,
focus,
inside,
state,
..
} => {
match hook.target_id {
InputHookTargetID::Window(hook_win) => {
if hook_win == win
&& window_state.is_cursor_inside()
&& !window_state.is_cursor_captured()
&& (!*focus || window_state.is_focused())
{
*inside = true;
call_cursor_on.push((*weight, *hook_id, hook));
} else if *inside {
// TODO: This isn't called when the cursor leaves the window
*inside = false;
state.reset();
}
},
InputHookTargetID::Bin(hook_bin) => {
if window_state.is_cursor_captured() {
*inside = false;
state.reset();
continue;
}
let mut inside_i_op: Option<usize> = None;
for (i, inside_id) in inside_bin_ids.iter().enumerate() {
if hook_bin == *inside_id {
inside_i_op = Some(i);
break;
}
}
let inside_i = match inside_i_op {
Some(some) => some,
None => {
*inside = false;
state.reset();
continue;
},
};
if (!*focus || Some(hook_bin) == focused_bin_id)
&& (!*top || inside_i == 0)
{
*inside = true;
state.update_top_most(inside_i == 0);
call_cursor_on.push((*weight, *hook_id, hook));
} else if *inside {
*inside = false;
state.reset()
}
},
InputHookTargetID::None => (),
}
},
_ => (),
}
}
enter.sort_by_key(|(weight, ..)| Reverse(*weight));
let mut call_enter_method = true;
let mut remove_hooks = Vec::new();
for (weight, hook_id, hook) in enter {
match &mut hook.state {
HookState::Enter {
method,
inside,
pass,
..
} => {
if call_enter_method {
if *inside {
if weight != NO_HOOK_WEIGHT && !*pass {
call_enter_method = false;
}
} else {
let hook_target = match hook.target_wk.upgrade() {
Some(some) => some,
None => {
remove_hooks.push(hook_id);
continue;
},
};
match method(hook_target, window_state) {
InputHookCtrl::Retain => {
*pass = true;
*inside = true;
},
InputHookCtrl::RetainNoPass => {
if weight != NO_HOOK_WEIGHT {
call_enter_method = false;
*pass = false;
*inside = true;
}
},
InputHookCtrl::Remove => {
remove_hooks.push(hook_id);
},
InputHookCtrl::RemoveNoPass => {
remove_hooks.push(hook_id);
if weight != NO_HOOK_WEIGHT {
call_enter_method = false;
}
},
}
}
} else {
*inside = false;
}
},
HookState::Leave {
inside, ..
} => {
if *inside {
if !call_enter_method {
call_leave_on.push((weight, hook_id, hook));
}
} else if call_enter_method {
*inside = true;
}
},
_ => unreachable!(),
}
}
call_leave_on.sort_by_key(|(weight, ..)| Reverse(*weight));
let mut call_leave_method = true;
for (weight, hook_id, hook) in call_leave_on {
if let HookState::Leave {
inside,
method,
..
} = &mut hook.state
{
let hook_target = match hook.target_wk.upgrade() {
Some(some) => some,
None => {
remove_hooks.push(hook_id);
continue;
},
};
*inside = false;
if call_leave_method {
match method(hook_target, window_state) {
InputHookCtrl::Retain => (),
InputHookCtrl::RetainNoPass => {
if weight != NO_HOOK_WEIGHT {
call_leave_method = false;
}
},
InputHookCtrl::Remove => {
remove_hooks.push(hook_id);
},
InputHookCtrl::RemoveNoPass => {
remove_hooks.push(hook_id);
call_leave_method = false;
},
}
}
} else {
unreachable!()
}
}
call_cursor_on.sort_by_key(|(weight, ..)| Reverse(*weight));
let mut call_cursor_method = true;
for (weight, hook_id, hook) in call_cursor_on {
if let HookState::Cursor {
state,
method,
..
} = &mut hook.state
{
let hook_target = match hook.target_wk.upgrade() {
Some(some) => some,
None => {
remove_hooks.push(hook_id);
continue;
},
};
if call_cursor_method {
state.update_delta(x, y);
match method(hook_target, window_state, state) {
InputHookCtrl::Retain => (),
InputHookCtrl::RetainNoPass => {
if weight != NO_HOOK_WEIGHT {
call_cursor_method = false;
}
},
InputHookCtrl::Remove => {
remove_hooks.push(hook_id);
},
InputHookCtrl::RemoveNoPass => {
remove_hooks.push(hook_id);
call_cursor_method = false;
},
}
} else {
state.reset();
}
} else {
unreachable!()
}
}
for hook_id in remove_hooks {
hooks.remove(&hook_id);
}
}
}