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On Web, add Window::(set_)prevent_default() (#3307)

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daxpedda 2023-12-25 09:37:35 +01:00 • committed by GitHub
parent 28a811bbba
commit 843d7904d6
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6 changed files with 84 additions and 60 deletions
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31
src/platform/web.rs
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@ -42,6 +42,21 @@ pub trait WindowExtWebSys {
/// Only returns the canvas if called from inside the window context (the
/// main thread).
fn canvas(&self) -> Option<HtmlCanvasElement>;
/// Returns [`true`] if calling `event.preventDefault()` is enabled.
///
/// See [`Window::set_prevent_default()`] for more details.
fn prevent_default(&self) -> bool;
/// Sets whether `event.preventDefault()` should be called on events on the
/// canvas that have side effects.
///
/// For example, by default using the mouse wheel would cause the page to scroll, enabling this
/// would prevent that.
///
/// Some events are impossible to prevent. E.g. Firefox allows to access the native browser
/// context menu with Shift+Rightclick.
fn set_prevent_default(&self, prevent_default: bool);
}
impl WindowExtWebSys for Window {
@ -49,6 +64,14 @@ impl WindowExtWebSys for Window {
fn canvas(&self) -> Option<HtmlCanvasElement> {
self.window.canvas()
}
fn prevent_default(&self) -> bool {
self.window.prevent_default()
}
fn set_prevent_default(&self, prevent_default: bool) {
self.window.set_prevent_default(prevent_default)
}
}
pub trait WindowBuilderExtWebSys {
@ -60,14 +83,10 @@ pub trait WindowBuilderExtWebSys {
/// [`None`] by default.
fn with_canvas(self, canvas: Option<HtmlCanvasElement>) -> Self;
/// Whether `event.preventDefault()` should be called on events on the
/// Sets whether `event.preventDefault()` should be called on events on the
/// canvas that have side effects.
///
/// For example, by default using the mouse wheel would cause the page to scroll, enabling this
/// would prevent that.
///
/// Some events are impossible to prevent. E.g. Firefox allows to access the native browser
/// context menu with Shift+Rightclick.
/// See [`Window::set_prevent_default()`] for more details.
///
/// Enabled by default.
fn with_prevent_default(self, prevent_default: bool) -> Self;