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use std::ffi::c_void;
use crate::bindings;
use crate::util;
pub struct Menu {
ptr: *mut bindings::Menuwidget,
data: *mut bindings::Menudata,
}
pub struct Data {
items: Vec<Item>,
}
pub struct Item {
text: String,
hotkey: i32,
func: Option<unsafe extern "C" fn(index: i32)>,
}
pub enum KeyResult {
Handled, Ignored, Quit, Called,
}
impl Menu {
pub fn new(lefttop: (u32, u32), data: Data) -> Menu {
unsafe {
let mdata = util::malloc::<bindings::Menudata>(1);
let mitems = util::malloc::<bindings::Menuitem>(data.items.len());
(*mdata).nitems = data.items.len() as i32;
(*mdata).items = mitems;
for i in 0..data.items.len() {
(*mitems.add(i)).text = util::strdup(&data.items[i].text);
(*mitems.add(i)).hotkey = data.items[i].hotkey;
(*mitems.add(i)).func = data.items[i].func;
}
Menu {
ptr: bindings::menu_make(
lefttop.0 as i32, lefttop.1 as i32,
mdata),
data: mdata,
}
}
}
pub fn redraw(&self) {
unsafe { bindings::menu_redraw(self.ptr); }
}
pub fn handle_key(&mut self, key: i32) -> KeyResult {
match unsafe { bindings::menu_handlekey(self.ptr, key) } {
bindings::Menukey_MENUKEY_HANDLED => KeyResult::Handled,
bindings::Menukey_MENUKEY_IGNORED => KeyResult::Ignored,
bindings::Menukey_MENUKEY_QUIT => KeyResult::Quit,
bindings::Menukey_MENUKEY_CALLED => KeyResult::Called,
_ => panic!("Invalid Menukey received from termio"),
}
}
}
impl Drop for Menu {
fn drop(&mut self) {
unsafe {
bindings::menu_destroy(self.ptr);
let nitems = (*self.data).nitems as usize;
let mitems = (*self.data).items;
for i in 0..nitems {
libc::free((*mitems.add(i)).text as *mut c_void);
}
libc::free(mitems as *mut c_void);
libc::free(self.data as *mut c_void);
}
}
}
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