Add HideableView

This commit is contained in:
Alexandre Bury 2018-06-13 21:35:37 -07:00
parent 9569e991bf
commit d52299a6e1
3 changed files with 97 additions and 0 deletions

1
.gitignore vendored
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@ -5,3 +5,4 @@ tags
.ctags
*.bk
TODO.txt
*.rustfmt

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@ -0,0 +1,94 @@
use view::{Selector, View, ViewWrapper};
use With;
use std::any::Any;
/// Wrapper around another view that can be hidden at will.
///
/// By default, it simply forwards all calls to the inner view.
///
/// When hidden (with `HideableView::hide()`), it will appear as a zero-sized
/// invisible view, will not take focus and will not accept input.
///
/// It can be made visible again with `HideableView::unhide()`.
pub struct HideableView<V> {
view: V,
visible: bool,
}
impl<V> HideableView<V> {
/// Creates a new HideableView around `view`.
///
/// It will be visible by default.
pub fn new(view: V) -> Self {
HideableView {
view,
visible: true,
}
}
/// Sets the visibility for this view.
pub fn set_visible(&mut self, visible: bool) {
self.visible = visible;
}
/// Sets the visibility for this view to `false`.
pub fn hide(&mut self) {
self.set_visible(false);
}
/// Sets the visibility for this view to `true`.
pub fn unhide(&mut self) {
self.set_visible(true);
}
/// Sets the visibility for this view to `false`.
///
/// Chainable variant.
pub fn hidden(self) -> Self {
self.with(Self::hide)
}
inner_getters!(self.view: V);
}
impl<V: View> ViewWrapper for HideableView<V> {
type V = V;
fn with_view<F, R>(&self, f: F) -> Option<R>
where
F: FnOnce(&Self::V) -> R,
{
if self.visible {
Some(f(&self.view))
} else {
None
}
}
fn with_view_mut<F, R>(&mut self, f: F) -> Option<R>
where
F: FnOnce(&mut Self::V) -> R,
{
if self.visible {
Some(f(&mut self.view))
} else {
None
}
}
fn wrap_call_on_any<'a>(
&mut self, selector: &Selector, callback: Box<FnMut(&mut Any) + 'a>,
) {
// We always run callbacks, even when invisible.
self.view.call_on_any(selector, callback)
}
fn into_inner(self) -> Result<Self::V, Self>
where
Self: Sized,
Self::V: Sized,
{
Ok(self.view)
}
}

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@ -42,6 +42,7 @@ mod checkbox;
mod dialog;
mod dummy;
mod edit_view;
mod hideable_view;
mod id_view;
mod layer;
mod linear_layout;
@ -69,6 +70,7 @@ pub use self::checkbox::Checkbox;
pub use self::dialog::{Dialog, DialogFocus};
pub use self::dummy::DummyView;
pub use self::edit_view::EditView;
pub use self::hideable_view::HideableView;
pub use self::id_view::{IdView, ViewRef};
pub use self::layer::Layer;
pub use self::linear_layout::LinearLayout;