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//! WebView plugin for managing WRY WebViews.
use std::collections::HashMap;
use freya_winit::{
plugins::{
FreyaPlugin,
PluginEvent,
PluginHandle,
},
winit::window::Window,
};
use torin::prelude::Area;
use wry::{
Rect,
WebView as WryWebView,
WebViewBuilder,
};
use crate::{
lifecycle::{
WebViewEvents,
WebViewLifecycleEvent,
},
registry::{
WebViewConfig,
WebViewId,
},
};
/// State for a managed WebView.
struct WebViewState {
webview: WryWebView,
}
/// Plugin for managing WebView instances.
///
/// This plugin handles the lifecycle of WRY WebViews, creating them when
/// elements are added and destroying them when elements are removed.
pub struct WebViewPlugin {
webviews: HashMap<WebViewId, WebViewState>,
events: WebViewEvents,
}
impl Default for WebViewPlugin {
fn default() -> Self {
Self::new()
}
}
impl WebViewPlugin {
/// Create a new WebView plugin.
pub fn new() -> Self {
Self {
webviews: HashMap::new(),
events: WebViewEvents::default(),
}
}
#[cfg(target_os = "linux")]
fn ensure_gtk_initialized(&mut self) {
// Initialize GTK for WebKitGTK on Linux
if !gtk::is_initialized() {
if gtk::init().is_ok() {
tracing::debug!("WebViewPlugin: GTK initialized");
} else {
tracing::error!("WebViewPlugin: Failed to initialize GTK");
}
}
}
#[cfg(target_os = "linux")]
fn advance_gtk_event_loop(&self) -> bool {
if gtk::is_initialized() {
// Process pending GTK events and return true if any were processed
let mut processed = false;
while gtk::events_pending() {
gtk::main_iteration_do(false);
processed = true;
}
processed
} else {
false
}
}
fn create_webview(
&mut self,
window: &Window,
id: WebViewId,
config: &WebViewConfig,
area: &Area,
) {
tracing::debug!(
"WebViewPlugin: Creating WebView {:?} with URL {}",
id,
config.url
);
let mut builder = WebViewBuilder::new();
if !config.url.is_empty() {
builder = builder.with_url(&config.url);
}
if config.transparent {
builder = builder.with_transparent(true);
}
if let Some(ref user_agent) = config.user_agent {
builder = builder.with_user_agent(user_agent);
}
if let Some(ref on_created) = config.on_created {
builder = (on_created)(builder)
}
// Set initial bounds
let bounds = Rect {
position: wry::dpi::Position::Logical(area.origin.to_f64().to_tuple().into()),
size: wry::dpi::Size::Logical(area.size.to_f64().to_tuple().into()),
};
tracing::info!(
"WebViewPlugin: Creating WebView with bounds: pos=({}, {}), size=({}, {})",
area.min_x(),
area.min_y(),
area.width(),
area.height()
);
builder = builder.with_bounds(bounds).with_visible(true);
// Build the WebView as a child of the window
match builder.build_as_child(window) {
Ok(webview) => {
// Ensure visibility after creation
let _ = webview.set_visible(true);
self.webviews.insert(id, WebViewState { webview });
tracing::debug!("WebViewPlugin: WebView {:?} created successfully", id);
}
Err(e) => {
tracing::error!("WebViewPlugin: Failed to create WebView {:?}: {}", id, e);
}
}
}
}
impl FreyaPlugin for WebViewPlugin {
fn on_event(&mut self, event: &mut PluginEvent, _handle: PluginHandle) {
match event {
PluginEvent::RunnerCreated { runner, .. } => {
runner.provide_root_context(|| self.events.clone());
}
PluginEvent::WindowCreated { .. } => {
// Window created, initialize GTK on Linux
tracing::debug!("WebViewPlugin: Window created");
#[cfg(target_os = "linux")]
self.ensure_gtk_initialized();
}
PluginEvent::AfterRedraw { window, .. } => {
// First, drain all lifecycle events from the channel into a vec
let events: Vec<WebViewLifecycleEvent> =
self.events.lock().unwrap().drain(..).collect();
// Then process the events
for event in events {
match event {
WebViewLifecycleEvent::Resized { id, area, config } => {
tracing::debug!("WebViewPlugin: Received Resized event for {:?}", id);
// Check if this is a pending webview that needs creation
if let Some(state) = self.webviews.get_mut(&id) {
if let Err(e) = state.webview.set_visible(true) {
tracing::error!(
"WebViewPlugin: Failed to set visible {:?}: {}",
id,
e
);
}
let rect = Rect {
position: wry::dpi::Position::Logical(
area.origin.to_f64().to_tuple().into(),
),
size: wry::dpi::Size::Logical(
area.size.to_f64().to_tuple().into(),
),
};
let resize = match state.webview.bounds() {
Ok(r) => r != rect,
_ => true,
};
if resize && let Err(e) = state.webview.set_bounds(rect) {
tracing::error!(
"WebViewPlugin: Failed to set bounds for {:?}: {}",
id,
e
);
}
} else {
self.create_webview(window, id, &config, &area);
}
}
WebViewLifecycleEvent::Close { id } => {
tracing::debug!("WebViewPlugin: Received Close event for {:?}", id);
self.webviews.remove(&id);
}
WebViewLifecycleEvent::Hide { id } => {
tracing::debug!("WebViewPlugin: Received Hide event for {:?}", id);
if let Some(state) = self.webviews.get_mut(&id) {
let _ = state.webview.set_visible(false);
}
}
}
}
#[cfg(target_os = "linux")]
{
// Advance GTK event loop on Linux to process WebView events
self.advance_gtk_event_loop();
// If we have WebViews, continuously request redraws to keep GTK events flowing
if !self.webviews.is_empty() {
window.request_redraw();
}
}
}
PluginEvent::WindowClosed { .. } => {
// Clean up all WebViews for this window
tracing::debug!(
"WebViewPlugin: Window closed, cleaning up {} WebViews",
self.webviews.len()
);
self.webviews.clear();
}
_ => {}
}
}
}