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use std::cell::Cell;
use std::ffi::{CStr, CString};
use std::marker::PhantomData;
use std::os::raw::{c_char, c_void};
use std::ptr;
use newt_sys::*;
use crate::component::Component;
use crate::constants::FlagsSense;
use crate::intern::data::Data;
#[derive(Component)]
pub struct Listbox<D: Data = isize> {
co: Cell<newtComponent>,
added_to_parent: Cell<bool>,
data: PhantomData<D>
}
impl<D: Data> Listbox<D> {
pub fn new(left: i32, top: i32, height: i32, flags: i32)
-> Listbox<D> {
Listbox {
co: unsafe {
let co = newtListbox(left, top, height, flags);
Cell::new(co)
},
added_to_parent: Cell::new(false),
data: PhantomData
}
}
pub fn set_width(&self, width: i32) {
unsafe { newtListboxSetWidth(self.co(), width); }
}
pub fn item_count(&self) -> i32 {
unsafe { newtListboxItemCount(self.co()) }
}
pub fn append_entry(&self, text: &str, data: D) -> Result<(), ()> {
let c_str = CString::new(text).unwrap();
let rv = unsafe {
newtListboxAppendEntry(
self.co(),
c_str.as_ptr(),
data.newt_to_ptr()
)
};
if rv == 0 { Ok(()) } else { Err(()) }
}
pub fn insert_entry(&self, text: &str, data: D, key: D)
-> Result<(), ()> {
let c_str = CString::new(text).unwrap();
let rv = unsafe {
newtListboxInsertEntry(self.co(), c_str.as_ptr(),
data.newt_to_ptr(),
key.newt_to_ptr() as *mut c_void)
};
if rv == 0 { Ok(()) } else { Err(()) }
}
pub fn get_current(&self) -> Option<D> {
let c_data = unsafe { newtListboxGetCurrent(self.co()) };
if c_data.is_null() { return None; }
Some(D::newt_from_ptr(c_data))
}
pub fn set_current(&self, num: i32) {
unsafe { newtListboxSetCurrent(self.co(), num); }
}
pub fn set_current_by_key(&self, key: D) {
unsafe {
newtListboxSetCurrentByKey(
self.co(),
key.newt_to_ptr() as *mut c_void
);
}
}
pub fn get_entry(&self, num: i32) -> (&str, D) {
let mut c_str: *mut c_char = ptr::null_mut();
let mut c_data: *mut c_void = ptr::null_mut();
unsafe {
newtListboxGetEntry(self.co(), num, &mut c_str, &mut c_data);
}
let c_str = unsafe { CStr::from_ptr(c_str) };
(c_str.to_str().unwrap(), D::newt_from_ptr(c_data))
}
pub fn set_entry(&self, num: i32, text: &str) {
let c_str = CString::new(text).unwrap();
unsafe { newtListboxSetEntry(self.co(), num, c_str.as_ptr()); }
}
pub fn set_data(&self, num: i32, data: D) {
unsafe {
newtListboxSetData(
self.co(),
num,
data.newt_to_ptr() as *mut c_void
);
}
}
pub fn delete_entry(&self, data: D) -> i32 {
unsafe {
newtListboxDeleteEntry(
self.co(),
data.newt_to_ptr() as *mut c_void
)
}
}
pub fn clear(&self) {
unsafe { newtListboxClear(self.co()); }
}
pub fn get_selection(&self) -> Box<[D]> {
let mut numitems: i32 = 0;
let ptr = unsafe { newtListboxGetSelection(self.co(), &mut numitems) };
c_ptr_array_to_boxed_slice!(ptr[D], numitems)
}
pub fn select_item(&self, key: D, sense: FlagsSense) {
unsafe {
newtListboxSelectItem(self.co(), key.newt_to_ptr(), sense as u32)
};
}
pub fn clear_selection(&self) {
unsafe { newtListboxClearSelection(self.co()) };
}
}