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dash-frontend: Application list

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This commit is contained in:
Aleksander
2025-09-28 13:13:37 +02:00
parent eb12a6a319
commit b5a3ba2954
18 changed files with 907 additions and 115 deletions
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137
wgui/src/parser/mod.rs
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@@ -49,6 +49,11 @@ struct ParserFile {
template_parameters: HashMap<Rc<str>, Rc<str>>,
}
/*
`components` could contain connected listener handles.
Do not drop them unless you don't need to handle any events,
including mouse-hover animations.
*/
#[derive(Default, Clone)]
pub struct ParserData {
pub components_by_id: HashMap<Rc<str>, ComponentWeak>,
@@ -60,6 +65,29 @@ pub struct ParserData {
macro_attribs: HashMap<Rc<str>, MacroAttribs>,
}
pub trait Fetchable {
/// Return a component by its string ID
fn fetch_component_by_id(&self, id: &str) -> anyhow::Result<Component>;
/// Return a component by the ID of the widget that owns it
fn fetch_component_by_widget_id(&self, widget_id: WidgetID) -> anyhow::Result<Component>;
/// Fetch a component by string ID and down‑cast it to a concrete component type `T` (see `components/mod.rs`)
fn fetch_component_as<T: 'static>(&self, id: &str) -> anyhow::Result<Rc<T>>;
/// Fetch a component by widget ID and down‑cast it to a concrete component type `T` (see `components/mod.rs`)
fn fetch_component_from_widget_id_as<T: 'static>(&self, widget_id: WidgetID) -> anyhow::Result<Rc<T>>;
/// Return a widget by its string ID
fn get_widget_id(&self, id: &str) -> anyhow::Result<WidgetID>;
/// Retrieve the widget associated with a string ID, returning a `WidgetPair` (id and widget itself)
fn fetch_widget(&self, state: &LayoutState, id: &str) -> anyhow::Result<WidgetPair>;
/// Retrieve a widget by string ID and down‑cast its inner value to type `T` (see `widget/mod.rs`)
fn fetch_widget_as<'a, T: 'static>(&self, state: &'a LayoutState, id: &str) -> anyhow::Result<RefMut<'a, T>>;
}
impl ParserData {
fn take_results_from(&mut self, from: &mut Self) {
let ids = std::mem::take(&mut from.ids);
@@ -85,19 +113,9 @@ impl ParserData {
}
}
/*
WARNING: this struct could contain valid components with already bound listener handles.
Make sure to store them somewhere in your code.
*/
#[derive(Default)]
pub struct ParserState {
pub data: ParserData,
pub path: PathBuf,
}
impl ParserState {
pub fn fetch_component_by_id(&self, id: &str) -> anyhow::Result<Component> {
let Some(weak) = self.data.components_by_id.get(id) else {
impl Fetchable for ParserData {
fn fetch_component_by_id(&self, id: &str) -> anyhow::Result<Component> {
let Some(weak) = self.components_by_id.get(id) else {
anyhow::bail!("Component by ID \"{id}\" doesn't exist");
};
@@ -108,8 +126,8 @@ impl ParserState {
Ok(Component(component))
}
pub fn fetch_component_by_widget_id(&self, widget_id: WidgetID) -> anyhow::Result<Component> {
let Some(weak) = self.data.components_by_widget_id.get(&widget_id) else {
fn fetch_component_by_widget_id(&self, widget_id: WidgetID) -> anyhow::Result<Component> {
let Some(weak) = self.components_by_widget_id.get(&widget_id) else {
anyhow::bail!("Component by widget ID \"{widget_id:?}\" doesn't exist");
};
@@ -120,37 +138,36 @@ impl ParserState {
Ok(Component(component))
}
pub fn fetch_component_as<T: 'static>(&self, id: &str) -> anyhow::Result<Rc<T>> {
fn fetch_component_as<T: 'static>(&self, id: &str) -> anyhow::Result<Rc<T>> {
let component = self.fetch_component_by_id(id)?;
if !(*component.0).as_any().is::<T>() {
anyhow::bail!("fetch_component_as({id}): type not matching");
}
// safety: we already checked it above, should be safe to directly cast it
// safety: we just checked the type
unsafe { Ok(Rc::from_raw(Rc::into_raw(component.0).cast())) }
}
pub fn fetch_component_from_widget_id_as<T: 'static>(&self, widget_id: WidgetID) -> anyhow::Result<Rc<T>> {
fn fetch_component_from_widget_id_as<T: 'static>(&self, widget_id: WidgetID) -> anyhow::Result<Rc<T>> {
let component = self.fetch_component_by_widget_id(widget_id)?;
if !(*component.0).as_any().is::<T>() {
anyhow::bail!("fetch_component_by_widget_id({widget_id:?}): type not matching");
}
// safety: we already checked it above, should be safe to directly cast it
// safety: we just checked the type
unsafe { Ok(Rc::from_raw(Rc::into_raw(component.0).cast())) }
}
pub fn get_widget_id(&self, id: &str) -> anyhow::Result<WidgetID> {
match self.data.ids.get(id) {
fn get_widget_id(&self, id: &str) -> anyhow::Result<WidgetID> {
match self.ids.get(id) {
Some(id) => Ok(*id),
None => anyhow::bail!("Widget by ID \"{id}\" doesn't exist"),
}
}
// returns widget and its id at once
pub fn fetch_widget(&self, state: &LayoutState, id: &str) -> anyhow::Result<WidgetPair> {
fn fetch_widget(&self, state: &LayoutState, id: &str) -> anyhow::Result<WidgetPair> {
let widget_id = self.get_widget_id(id)?;
let widget = state
.widgets
@@ -162,7 +179,7 @@ impl ParserState {
})
}
pub fn fetch_widget_as<'a, T: 'static>(&self, state: &'a LayoutState, id: &str) -> anyhow::Result<RefMut<'a, T>> {
fn fetch_widget_as<'a, T: 'static>(&self, state: &'a LayoutState, id: &str) -> anyhow::Result<RefMut<'a, T>> {
let widget_id = self.get_widget_id(id)?;
let widget = state
.widgets
@@ -175,8 +192,23 @@ impl ParserState {
Ok(casted)
}
}
pub fn process_template<U1, U2>(
/*
WARNING: this struct could contain valid components with already bound listener handles.
Make sure to store them somewhere in your code.
*/
#[derive(Default)]
pub struct ParserState {
pub data: ParserData,
pub path: PathBuf,
}
impl ParserState {
/// This function is suitable in cases if you don't want to pollute main parser state with dynamic IDs
/// Use `instantiate_template` instead unless you want to handle `components` results yourself.
/// Make sure not to drop them if you want to have your listener handles valid
pub fn parse_template<U1, U2>(
&mut self,
doc_params: &ParseDocumentParams,
template_name: &str,
@@ -184,7 +216,7 @@ impl ParserState {
listeners: &mut EventListenerCollection<U1, U2>,
widget_id: WidgetID,
template_parameters: HashMap<Rc<str>, Rc<str>>,
) -> anyhow::Result<()> {
) -> anyhow::Result<ParserData> {
let Some(template) = self.data.templates.get(template_name) else {
anyhow::bail!("no template named \"{template_name}\" found");
};
@@ -204,13 +236,64 @@ impl ParserState {
};
parse_widget_other_internal(&template.clone(), template_parameters, &file, &mut ctx, widget_id)?;
Ok(ctx.data_local)
}
self.data.take_results_from(&mut ctx.data_local);
/// Instantinate template by saving all the results into the main `ParserState`
pub fn instantiate_template<U1, U2>(
&mut self,
doc_params: &ParseDocumentParams,
template_name: &str,
layout: &mut Layout,
listeners: &mut EventListenerCollection<U1, U2>,
widget_id: WidgetID,
template_parameters: HashMap<Rc<str>, Rc<str>>,
) -> anyhow::Result<()> {
let mut data_local = self.parse_template(
doc_params,
template_name,
layout,
listeners,
widget_id,
template_parameters,
)?;
self.data.take_results_from(&mut data_local);
Ok(())
}
}
// convenience wrapper functions for `data`
impl Fetchable for ParserState {
fn fetch_component_by_id(&self, id: &str) -> anyhow::Result<Component> {
self.data.fetch_component_by_id(id)
}
fn fetch_component_by_widget_id(&self, widget_id: WidgetID) -> anyhow::Result<Component> {
self.data.fetch_component_by_widget_id(widget_id)
}
fn fetch_component_as<T: 'static>(&self, id: &str) -> anyhow::Result<Rc<T>> {
self.data.fetch_component_as(id)
}
fn fetch_component_from_widget_id_as<T: 'static>(&self, widget_id: WidgetID) -> anyhow::Result<Rc<T>> {
self.data.fetch_component_from_widget_id_as(widget_id)
}
fn get_widget_id(&self, id: &str) -> anyhow::Result<WidgetID> {
self.data.get_widget_id(id)
}
fn fetch_widget(&self, state: &LayoutState, id: &str) -> anyhow::Result<WidgetPair> {
self.data.fetch_widget(state, id)
}
fn fetch_widget_as<'a, T: 'static>(&self, state: &'a LayoutState, id: &str) -> anyhow::Result<RefMut<'a, T>> {
self.data.fetch_widget_as(state, id)
}
}
#[derive(Debug, Clone)]
struct MacroAttribs {
attribs: HashMap<Rc<str>, Rc<str>>,