Add enabled state to SelectView

This commit is contained in:
Alexandre Bury 2016-07-16 18:46:18 -07:00
parent 02b6b6601f
commit 58a04bbb13

View File

@ -2,11 +2,13 @@ use std::cmp::min;
use std::rc::Rc;
use Cursive;
use With;
use direction::Direction;
use view::{IdView, View};
use align::{Align, HAlign, VAlign};
use view::scroll::ScrollBase;
use event::{Event, EventResult, Key};
use theme::ColorStyle;
use vec::Vec2;
use Printer;
@ -31,6 +33,7 @@ impl<T> Item<T> {
/// It contains a list of values of type T, with associated labels.
pub struct SelectView<T = String> {
items: Vec<Item<T>>,
enabled: bool,
focus: usize,
scrollbase: ScrollBase,
// This is a custom callback to include a &T
@ -43,6 +46,7 @@ impl<T: 'static> SelectView<T> {
pub fn new() -> Self {
SelectView {
items: Vec::new(),
enabled: true,
focus: 0,
scrollbase: ScrollBase::new(),
select_cb: None,
@ -50,6 +54,35 @@ impl<T: 'static> SelectView<T> {
}
}
/// Disables this view.
///
/// A disabled view cannot be selected.
pub fn disable(&mut self) {
self.enabled = false;
}
/// Disables this view.
///
/// Chainable variant.
pub fn disabled(self) -> Self {
self.with(Self::disable)
}
/// Re-enables this view.
pub fn enable(&mut self) {
self.enabled = true;
}
/// Enable or disable this view.
pub fn set_enabled(&mut self, enabled: bool) {
self.enabled = enabled;
}
/// Returns `true` if this view is enabled.
pub fn is_enabled(&self) -> bool {
self.enabled
}
/// Sets a callback to be used when an item is selected.
///
/// (When ENTER is pressed on an item).
@ -117,6 +150,14 @@ impl<T: 'static> SelectView<T> {
pub fn with_id(self, label: &str) -> IdView<Self> {
IdView::new(label, self)
}
fn draw_item(&self, printer: &Printer, i: usize) {
let l = self.items[i].label.width();
let x = self.align.h.get_offset(l, printer.size.x);
printer.print_hline((0, 0), x, " ");
printer.print((x, 0), &self.items[i].label);
printer.print_hline((x + l, 0), printer.size.x - l - x, " ");
}
}
impl SelectView<String> {
@ -141,11 +182,12 @@ impl<T: 'static> View for SelectView<T> {
self.scrollbase.draw(printer, |printer, i| {
printer.with_selection(i == self.focus, |printer| {
let l = self.items[i].label.width();
let x = self.align.h.get_offset(l, printer.size.x);
printer.print_hline((0, 0), x, " ");
printer.print((x, 0), &self.items[i].label);
printer.print_hline((x + l, 0), printer.size.x - l - x, " ");
if i != self.focus && !self.enabled {
printer.with_color(ColorStyle::Secondary,
|printer| self.draw_item(printer, i));
} else {
self.draw_item(printer, i);
}
});
});
}
@ -217,7 +259,7 @@ impl<T: 'static> View for SelectView<T> {
}
fn take_focus(&mut self, _: Direction) -> bool {
true
self.enabled && !self.items.is_empty()
}
fn layout(&mut self, size: Vec2) {