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https://github.com/FliegendeWurst/cursive.git
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Add RefCellView
Wraps a view and provide interior mutability
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19
Cargo.toml
19
Cargo.toml
@ -1,11 +1,11 @@
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[package]
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authors = ["Alexandre Bury <alexandre.bury@gmail.com>"]
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build = "build.rs"
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categories = ["command-line-interface", "gui"]
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description = "A TUI (Text User Interface) library focused on ease-of-use."
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documentation = "https://gyscos.github.io/Cursive/cursive/index.html"
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exclude = ["doc", "assets"]
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keywords = ["ncurses", "TUI", "UI"]
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categories = ["command-line-interface", "gui"]
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license = "MIT"
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name = "cursive"
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readme = "Readme.md"
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@ -13,7 +13,11 @@ repository = "https://github.com/gyscos/Cursive"
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version = "0.4.0"
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[badges]
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travis-ci = { repository = "gyscos/Cursive" }
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[badges.travis-ci]
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repository = "gyscos/Cursive"
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[build-dependencies]
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[build-dependencies.skeptic]
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optional = true
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@ -23,18 +27,19 @@ version = "0.6"
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chan = "0.1.18"
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num = "0.1"
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odds = "0.2"
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owning_ref = "0.2.4"
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toml = "0.2"
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unicode-segmentation = "1.0"
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unicode-width = "0.1"
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[dependencies.chan-signal]
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optional = true
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version = "0.1"
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[dependencies.bear-lib-terminal]
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optional = true
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version = "1.3.1"
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[dependencies.chan-signal]
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optional = true
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version = "0.1"
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[dependencies.ncurses]
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features = ["wide"]
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optional = true
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@ -55,8 +60,8 @@ skeptic = "0.6"
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[features]
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default = ["ncurses"]
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termion-backend = ["termion", "chan-signal"]
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pancurses-backend = ["pancurses"]
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termion-backend = ["termion", "chan-signal"]
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[lib]
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name = "cursive"
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@ -64,6 +64,7 @@ extern crate unicode_segmentation;
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extern crate unicode_width;
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extern crate odds;
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extern crate num;
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extern crate owning_ref;
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#[macro_use]
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extern crate chan;
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@ -52,6 +52,7 @@ mod menu_popup;
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mod panel;
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mod progress_bar;
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mod radio;
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mod refcell_view;
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mod select_view;
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mod slider_view;
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mod shadow_view;
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@ -78,6 +79,7 @@ pub use self::menubar::Menubar;
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pub use self::panel::Panel;
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pub use self::progress_bar::{Counter, ProgressBar};
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pub use self::radio::{RadioGroup, RadioButton};
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pub use self::refcell_view::{RefCellView, ViewRef};
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pub use self::select_view::SelectView;
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pub use self::shadow_view::ShadowView;
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pub use self::sized_view::SizedView;
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49
src/views/refcell_view.rs
Normal file
49
src/views/refcell_view.rs
Normal file
@ -0,0 +1,49 @@
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use owning_ref::{RcRef, OwningHandle};
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use std::cell::{RefCell, RefMut};
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use std::rc::Rc;
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use view::{View, ViewWrapper};
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/// Wrapper around a view to provide interior mutability.
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pub struct RefCellView<V: View> {
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view: Rc<RefCell<V>>,
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}
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/// Mutable reference to a view.
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pub type ViewRef<V> = OwningHandle<RcRef<RefCell<V>>, RefMut<'static, V>>;
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impl<V: View> RefCellView<V> {
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/// Wraps `view` in a new `RefCellView`.
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pub fn new(view: V) -> Self {
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RefCellView { view: Rc::new(RefCell::new(view)) }
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}
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/// Gets mutable access to the inner view.
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pub fn get_mut(&mut self) -> ViewRef<V> {
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// TODO: return a standalone item (not tied to our lifetime)
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// that bundles `self.view.clone()` and allow mutable reference to
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// the inner view.
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let cell_ref = RcRef::new(self.view.clone());
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OwningHandle::new(cell_ref,
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|x| unsafe { x.as_ref() }.unwrap().borrow_mut())
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}
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}
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impl<T: View> ViewWrapper for RefCellView<T> {
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type V = T;
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fn with_view<F, R>(&self, f: F) -> R
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where F: FnOnce(&Self::V) -> R
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{
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f(&*self.view.borrow())
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}
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fn with_view_mut<F, R>(&mut self, f: F) -> R
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where F: FnOnce(&mut Self::V) -> R
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{
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f(&mut *self.view.borrow_mut())
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}
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}
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