mirror of
https://github.com/danbulant/cushy
synced 2026-05-21 13:18:48 +00:00
9e4e079bf5
This cascaded into a lot more work than expected. However, in general, if one clones a `WidgetInstance` and shares it between two windows, it should now work. Widget authors must ensure that when they cache information, they do so with either a `WidgetCacheKey` or use a `WindowLocal<T>` if per-window state is desired. This is demonstrated in the debug-window example, where the counter of open windows is next to a clone of the same button from the main window that opens a new window.
69 lines
2 KiB
Rust
69 lines
2 KiB
Rust
use cushy::debug::DebugContext;
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use cushy::value::Dynamic;
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use cushy::widget::MakeWidget;
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use cushy::widgets::slider::Slidable;
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use cushy::{Application, Open, PendingApp};
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const INTRO: &str = "This example demonstrates the DebugContext, which allows observing values easily throughout GUI";
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fn main() -> cushy::Result {
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let app = PendingApp::default();
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let info = DebugContext::default();
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let window_count = Dynamic::new(0_usize);
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let total_windows = info.dbg("Total Windows", Dynamic::new(0_usize));
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let open_window_button = "Open a Window"
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.into_button()
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.on_click({
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let app = app.as_app();
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let info = info.clone();
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let window_count = window_count.clone();
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let total_windows = total_windows.clone();
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move |()| open_a_window(&window_count, &total_windows, &info, &app)
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})
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.make_widget();
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info.observe("Open Windows", &window_count, |window_count| {
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window_count
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.map_each(ToString::to_string)
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.and(open_window_button.clone())
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.into_columns()
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});
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info.clone().open(&app)?;
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INTRO
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.and(open_window_button)
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.into_rows()
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.centered()
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.run_in(app)
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}
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fn open_a_window(
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window_count: &Dynamic<usize>,
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total_windows: &Dynamic<usize>,
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info: &DebugContext,
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app: &dyn Application,
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) {
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*window_count.lock() += 1;
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let window_number = total_windows.map_mut(|total| {
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*total += 1;
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*total
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});
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let window_title = format!("Window #{window_number}");
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let dbg = info.section(&window_title);
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let value = dbg.dbg("Slider", Dynamic::new(0_u8));
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let window_count = window_count.clone();
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let _ = format!("This is window {window_number}.")
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.and(value.slider())
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.into_rows()
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.centered()
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.into_window()
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.titled(window_title)
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.on_close(move || {
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*window_count.lock() -= 1;
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})
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.open(app);
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}
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