60 lines
1.9 KiB
Rust
60 lines
1.9 KiB
Rust
use crate::avm1::{Avm1, Value};
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use crate::context::UpdateContext;
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pub use crate::display_object::{DisplayObject, TDisplayObject, TDisplayObjectContainer};
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use gc_arena::{Collect, GcCell, MutationContext};
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#[derive(Clone, Copy, Collect, Debug)]
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#[collect(no_drop)]
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pub struct FocusTracker<'gc>(GcCell<'gc, Option<DisplayObject<'gc>>>);
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impl<'gc> FocusTracker<'gc> {
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pub fn new(gc_context: MutationContext<'gc, '_>) -> Self {
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Self(GcCell::allocate(gc_context, None))
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}
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pub fn get(&self) -> Option<DisplayObject<'gc>> {
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*self.0.read()
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}
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pub fn set(
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&self,
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focused_element: Option<DisplayObject<'gc>>,
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context: &mut UpdateContext<'_, 'gc, '_>,
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) {
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let old = std::mem::replace(&mut *self.0.write(context.gc_context), focused_element);
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if old.is_none() && focused_element.is_none() {
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// We didn't have anything, we still don't, no change.
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return;
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}
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if old.is_some() == focused_element.is_some()
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&& old.unwrap().as_ptr() == focused_element.unwrap().as_ptr()
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{
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// We're setting it to the same object as before, no change.
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return;
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}
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if let Some(old) = old {
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old.on_focus_changed(context.gc_context, false);
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}
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if let Some(new) = focused_element {
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new.on_focus_changed(context.gc_context, true);
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}
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log::info!("Focus is now on {:?}", focused_element);
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let level0 = context.stage.root_clip();
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Avm1::notify_system_listeners(
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level0,
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context.swf.version(),
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context,
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"Selection".into(),
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"onSetFocus".into(),
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&[
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old.map(|v| v.object()).unwrap_or(Value::Null),
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focused_element.map(|v| v.object()).unwrap_or(Value::Null),
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],
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);
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}
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}
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