Struct PolarsViewApp 

pub struct PolarsViewApp {
    pub data_container: Option<Arc<DataContainer>>,
    pub applied_filter: DataFilter,
    pub applied_format: DataFormat,
    pub file_info: Option<FileInfo>,
    pub notification: Option<Box<dyn Notification>>,
    /* private fields */
}

The main application struct for PolarsView, holding the entire UI and async state.

Fields

data_container: Option<Arc<DataContainer>>

Holds the currently loaded data and its associated view state (DataContainer). None if no data is loaded. Arc allows efficient sharing with async tasks.

applied_filter: DataFilter

Stores the state of the data loading/filtering parameters last applied. Used by the side panel UI (render_query) to detect changes made by the user to settings like SQL query, delimiter, etc. Does not contain sort info.

applied_format: DataFormat

Stores the state of the data formatting settings last applied. Used by the side panel UI (render_format) to detect changes to display settings.

file_info: Option<FileInfo>

Info extracted from the currently loaded file.

notification: Option<Box<dyn Notification>>

Optional Notification window for displaying errors or settings dialogs.

Implementations

impl PolarsViewApp

pub fn new(cc: &CreationContext<'_>) -> PolarsViewResult<Self>

Creates a new PolarsViewApp instance. Sets the initial UI style (theme).

pub fn new_with_future( cc: &CreationContext<'_>, future: DataFuture, ) -> PolarsViewResult<Self>

Creates a new PolarsViewApp and immediately starts loading data using a provided DataFuture. Useful for loading data specified via command-line arguments on startup. future: The asynchronous operation (e.g., DataContainer::load_data) to run.

Trait Implementations

impl App for PolarsViewApp

fn update(&mut self, ctx: &Context, _frame: &mut Frame)

The main update function called by eframe on each frame (the “render loop”). Responsible for handling events, updating state, and drawing the UI.

fn save(&mut self, _storage: &mut dyn Storage)

Called on shutdown, and perhaps at regular intervals. Allows you to save state.

fn on_exit(&mut self, _gl: Option<&Context>)

Called once on shutdown, after Self::save.

fn auto_save_interval(&self) -> Duration

Time between automatic calls to Self::save

fn clear_color(&self, _visuals: &Visuals) -> [f32; 4]

Background color values for the app, e.g. what is sent to gl.clearColor.

fn persist_egui_memory(&self) -> bool

Controls whether or not the egui memory (window positions etc) will be persisted (only if the “persistence” feature is enabled).

fn raw_input_hook(&mut self, _ctx: &Context, _raw_input: &mut RawInput)

A hook for manipulating or filtering raw input before it is processed by Self::update.

impl Default for PolarsViewApp

fn default() -> Self

Creates a default PolarsViewApp instance. Initializes the runtime and sets initial state.