Fix #3

The `set_at` function for `requestty_ui::widgets::Select` adjusts the
page bounds if required. However, it wouldn't check if the component has
never been rendered (and so heights never calculated) and thus cause a
panic if called before ever being rendered. Now `set_at` can be called
at any point.

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## `0.1.3`
+
+- `requestty`
+
+  - Fix #3
+
+- `requestty-ui`
+  - Update crossterm dependency
+
 ## `0.1.2`
 
 - `requestty`

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "requestty"
-version = "0.1.2"
+version = "0.1.3"
 authors = ["Lutetium Vanadium"]
 edition = "2018"
 description = "An easy-to-use collection of interactive cli prompts"
@@ -22,7 +22,7 @@ members = [
 
 [dependencies]
 tempfile = "3"
-ui = { package = "requestty-ui", path = "./requestty-ui", version = "=0.2.0" }
+ui = { package = "requestty-ui", path = "./requestty-ui", version = "=0.2.1" }
 macro = { package = "requestty-macro", path = "./requestty-macro", optional = true, version = "=0.1.1" }
 
 smallvec = { version = "1.6", optional = true }

requestty-ui/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "requestty-ui"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Lutetium Vanadium"]
 edition = "2018"
 description = "A widget based terminal ui rendering library."
@@ -18,7 +18,7 @@ bitflags = "1.2"
 textwrap = "0.14"
 unicode-segmentation = "1.7"
 
-crossterm = { version = "0.21", optional = true }
+crossterm = { version = "0.22", optional = true }
 termion = { version = "1.5", optional = true }
 
 [dev-dependencies]

requestty-ui/src/select/mod.rs

@@ -140,7 +140,7 @@ impl<L: List> Select<L> {
         if self.is_paginating() {
             if at >= self.list.len() {
                 self.init_page();
-            } else {
+            } else if self.heights.is_some() {
                 self.maybe_adjust_page(dir);
             }
         }

requestty-ui/src/select/tests.rs

@@ -139,10 +139,12 @@ fn test_selectable() {
     let list = select.into_inner().with_should_loop(false);
 
     let mut select = Select::new(list);
+    select.set_at(2);
+
     select.maybe_update_heights(Layout::new(0, (100, 20).into()));
     select.init_page();
 
-    assert_eq!(select.get_at(), 1);
+    assert_eq!(select.get_at(), 2);
     select.set_at(0);
     assert_eq!(select.prev_selectable(), 1);
     select.set_at(1);