newt/asm/grid/
button_bar.rs

1//
2// Copyright (C) 2019 Robert Gill <rtgill82@gmail.com>
3//
4// This file is a part of newt-rs.
5//
6// This library is free software; you can redistribute it and/or
7// modify it under the terms of the GNU Lesser General Public
8// License version 2.1 as published by the Free Software Foundation.
9//
10// This library is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13// Lesser General Public License for more details.
14//
15// You should have received a copy of the GNU Lesser General Public
16// License along with this library; if not, write to the Free Software
17// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
18//
19
20use std::cell::Cell;
21use newt_sys::*;
22use crate::component::Component;
23use crate::grid::Parent;
24use crate::widgets::Button;
25
26use crate::asm;
27
28///
29/// Creates a row of buttons.
30///
31#[derive(Grid)]
32pub struct ButtonBar {
33    co: Cell<newtGrid>,
34    added_to_parent: Cell<bool>,
35    children: Vec<Button>
36}
37
38impl ButtonBar {
39    ///
40    /// Create a new grid containing a row of buttons. The buttons will
41    /// be labeled with the strings provided in `buttons`.
42    ///
43    /// * `buttons` - A list of strings to use as button labels.
44    ///
45    pub fn new(buttons: &[&str]) -> ButtonBar {
46        let grid: newtGrid;
47
48        let len = buttons.len();
49        let mut buttons_buf: Vec<newtComponent> = Vec::with_capacity(len);
50
51        unsafe {
52            let buttons_ptr: *mut newtComponent = buttons_buf.as_mut_ptr();
53            grid = asm::button_bar_new(buttons, buttons_ptr);
54            buttons_buf.set_len(len);
55        }
56
57        let mut buttons = Vec::with_capacity(len);
58        for co in buttons_buf {
59            buttons.push(Button::new_co(co));
60        }
61
62        ButtonBar {
63            co: Cell::new(grid),
64            added_to_parent: Cell::new(false),
65            children: buttons
66        }
67    }
68
69    ///
70    /// `Returns` the array of buttons contained by the grid.
71    ///
72    pub fn buttons(&self) -> &[Button] {
73        self.children.as_slice()
74    }
75}
76
77impl Parent for ButtonBar {
78    fn children(&self) -> Vec<&dyn Component> {
79        let len = self.children.len();
80        let mut vec: Vec<&dyn Component> = Vec::with_capacity(len);
81        for child in self.children.iter() {
82            vec.push(child);
83        }
84        vec
85    }
86}
newt/asm/grid/button_bar.rs

newt/asm/grid/
button_bar.rs
