cleanup examples

- move initialization of edittree-hook into lib-nested-tty
- split examples into separate digit/string examples

examples/tty-02-digit/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "tty-02-digit"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+laddertypes = { path = "../../../lib-laddertypes" }
+r3vi = { path = "../../../lib-r3vi" }
+nested = { path = "../../lib-nested-core" }
+nested-tty = { path = "../../lib-nested-tty" }
+termion = "*"
+cgmath = "*"
+
+[dependencies.async-std]
+version = "1.9.0"
+features = ["unstable", "attributes"]
+

examples/tty-02-digit/src/main.rs

@@ -0,0 +1,144 @@
+extern crate cgmath;
+extern crate nested;
+extern crate nested_tty;
+extern crate r3vi;
+extern crate termion;
+
+use {
+    cgmath::Vector2,
+    nested::{
+        editors::ObjCommander,
+        repr_tree::{Context, ReprTree, ReprTreeExt},
+        edit_tree::{EditTree}
+    },
+    nested_tty::{
+        DisplaySegment, TTYApplication,
+        TerminalCompositor, TerminalStyle, TerminalView,
+        TerminalAtom, TerminalEvent
+    },
+    r3vi::{
+        buffer::{singleton::*, vec::*},
+        view::{port::UpdateTask, list::*}
+    },
+    std::sync::{Arc, RwLock},
+};
+
+#[async_std::main]
+async fn main() {
+    /* setup context & create Editor-Tree
+     */
+    let ctx = Arc::new(RwLock::new(Context::new()));
+
+    nested::editors::char::init_ctx( ctx.clone() );
+    nested::editors::digit::init_ctx( ctx.clone() );
+    nested::editors::integer::init_ctx( ctx.clone() );
+    nested::editors::list::init_ctx( ctx.clone() );
+
+    nested_tty::setup_edittree_hook(&ctx);
+
+    /* structure of Repr-Tree
+     *
+     *   === Repr-Tree ===
+     *
+     *        <Digit 10>
+     *         /   |     \
+     *        /    |        \
+     *       /     |          \
+     *     u32   EditTree     Char
+     *           - Editor         \
+     *           - Display        EditTree
+     *         /     |    \      - Editor
+     *        /      |     \     - Display
+     *      TTY  PixelBuf  SDF  /    |     \
+     *                         /     |      \
+     *                       TTY  PixelBuf  SDF
+     */
+    let mut rt_digit = ReprTree::new_arc( Context::parse(&ctx, "<Digit 16>") );
+
+    /* add initial representation
+     *  <Digit 16> ~ Char
+     */
+    rt_digit.insert_leaf(
+        Context::parse(&ctx, "Char"),
+        nested::repr_tree::ReprLeaf::from_singleton_buffer( SingletonBuffer::new('5') )
+    );
+
+    /* furthermore, setup projections to and from u8 value,
+     * this synchronizes the buffers 
+     */
+    ctx.read().unwrap().morphisms.apply_morphism(
+        rt_digit.clone(),
+        &Context::parse(&ctx, "<Digit 16>~Char"),
+        &Context::parse(&ctx, "<Digit 16>~ℤ_256~machine::UInt8")
+    );
+
+    /* setup TTY-Display for DigitEditor
+     *
+     * `setup_edittree` will setup the projection
+     *    Char -> Char~EditTree
+     *  and call the hook defined above with `set_edittree_hook()`
+     *
+     */
+    let edittree_digit = ctx.read().unwrap()
+        .setup_edittree(
+            rt_digit.clone(),
+            SingletonBuffer::new(0).get_port()
+        );
+
+    let mut digit_u8_buffer = rt_digit
+        .descend(Context::parse(&ctx, "ℤ_256~machine::UInt8")).unwrap()
+        .singleton_buffer::<u8>();
+
+    /* setup terminal
+     */
+    let app = TTYApplication::new({
+        /* event handler
+         */
+        let ctx = ctx.clone();
+
+        let mut edittree_digit = edittree_digit.clone();
+        move |ev| {
+            edittree_digit.get().send_cmd_obj(ev.to_repr_tree(&ctx));
+        }
+    });
+
+    /* setup display view routed to `app.port`
+     */
+    let compositor = TerminalCompositor::new(app.port.inner());
+
+    // add some views to the display compositor
+    {
+        let mut comp = compositor.write().unwrap();
+
+        comp.push(
+            nested_tty::make_label("Hello World")
+                .map_item(|p, a| {
+                    a.add_style_back(TerminalStyle::fg_color(((25 * p.x % 255) as u8, 200, 0)))
+                })
+                .offset(Vector2::new(5, 0)),
+        );
+
+        let label_str = ctx.read().unwrap().type_term_to_str(&rt_digit.read().unwrap().get_type());
+        comp.push(
+            nested_tty::make_label(&label_str)
+            .map_item(|_pt,atom| atom.add_style_front(TerminalStyle::fg_color((90,90,90))))
+            .offset(Vector2::new(1, 1))
+        );
+        comp.push(
+            edittree_digit.get().display_view()
+            .offset(Vector2::new(3,2))
+        );
+        comp.push(
+            digit_u8_buffer.get_port().map(
+                |d| nested_tty::make_label(&format!("Digit value={}", d))
+            )
+            .to_grid()
+            .flatten()
+            .offset(Vector2::new(5,3))
+        );
+    }
+
+    /* write the changes in the view of `term_port` to the terminal
+     */
+    app.show().await.expect("output error!");
+}