feat: port el-ui vessels — rename crates→vessels, add El source + manifests

2026-05-05 04:19:22 -05:00
parent b580a63540
commit faee6fdb25
145 changed files with 4050 additions and 12 deletions
@@ -0,0 +1,155 @@
+//! Linux backend — GTK/Wayland.
+//!
+//! Architecture: correct and complete. GTK calls are stubs marked TODO.
+//!
+//! Each `PlatformNode` maps to a GtkWidget:
+//!   element("div")    → GtkBox (vertical)
+//!   element("button") → GtkButton
+//!   element("input")  → GtkEntry
+//!   text("...")       → GtkLabel
+
+use crate::{EventHandler, PlatformBackend, PlatformError, PlatformNode, PlatformResult};
+
+pub struct LinuxBackend;
+
+impl LinuxBackend {
+    pub fn new() -> Self {
+        Self
+    }
+
+    fn gtk_widget(tag: &str) -> &'static str {
+        match tag {
+            "button" => "GtkButton",
+            "input" => "GtkEntry",
+            "textarea" => "GtkTextView",
+            "img" => "GtkImage",
+            "ul" | "ol" => "GtkListBox",
+            "li" => "GtkListBoxRow",
+            "nav" => "GtkHeaderBar",
+            "div" | "section" | "main" | "article" | "span" => "GtkBox",
+            _ => "GtkWidget",
+        }
+    }
+
+    fn gtk_signal(event: &str) -> &'static str {
+        match event {
+            "click" => "clicked",
+            "input" | "change" => "changed",
+            "focus" => "focus-in-event",
+            "blur" => "focus-out-event",
+            "keydown" | "keypress" => "key-press-event",
+            "keyup" => "key-release-event",
+            _ => "event",
+        }
+    }
+}
+
+impl Default for LinuxBackend {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl PlatformBackend for LinuxBackend {
+    fn name(&self) -> &'static str {
+        "linux"
+    }
+
+    fn create_element(&self, tag: &str) -> PlatformResult<PlatformNode> {
+        let mut node = PlatformNode::element(tag);
+        // TODO: gtk_button_new() / gtk_box_new() / etc. via gtk-rs or raw FFI
+        node.attributes
+            .push(crate::Attribute::new("data-gtk-widget", Self::gtk_widget(tag)));
+        Ok(node)
+    }
+
+    fn create_text(&self, content: &str) -> PlatformResult<PlatformNode> {
+        let mut node = PlatformNode::text(content);
+        // TODO: gtk_label_new(content)
+        node.attributes
+            .push(crate::Attribute::new("data-gtk-widget", "GtkLabel"));
+        Ok(node)
+    }
+
+    fn set_attribute(
+        &self,
+        node: &mut PlatformNode,
+        name: &str,
+        value: &str,
+    ) -> PlatformResult<()> {
+        // TODO: map to GTK property setters
+        //   "class" → gtk_widget_add_css_class
+        //   "disabled" → gtk_widget_set_sensitive(false)
+        //   "placeholder" → gtk_entry_set_placeholder_text
+        node.attributes.retain(|a| a.name != name);
+        node.attributes.push(crate::Attribute::new(name, value));
+        Ok(())
+    }
+
+    fn remove_attribute(&self, node: &mut PlatformNode, name: &str) -> PlatformResult<()> {
+        node.attributes.retain(|a| a.name != name);
+        Ok(())
+    }
+
+    fn append_child(
+        &self,
+        parent: &mut PlatformNode,
+        child: PlatformNode,
+    ) -> PlatformResult<()> {
+        // TODO: gtk_box_append(parent, child)
+        parent.children.push(child);
+        Ok(())
+    }
+
+    fn remove_child(&self, parent: &mut PlatformNode, child_index: usize) -> PlatformResult<()> {
+        if child_index >= parent.children.len() {
+            return Err(PlatformError::Render(format!(
+                "linux: child index {} out of bounds",
+                child_index
+            )));
+        }
+        // TODO: gtk_widget_unparent(child)
+        parent.children.remove(child_index);
+        Ok(())
+    }
+
+    fn replace_child(
+        &self,
+        parent: &mut PlatformNode,
+        index: usize,
+        new_child: PlatformNode,
+    ) -> PlatformResult<()> {
+        if index >= parent.children.len() {
+            return Err(PlatformError::Render("linux: replace_child out of bounds".into()));
+        }
+        parent.children[index] = new_child;
+        Ok(())
+    }
+
+    fn bind_event(
+        &self,
+        node: &mut PlatformNode,
+        event: &str,
+        _handler: EventHandler,
+    ) -> PlatformResult<()> {
+        let signal = Self::gtk_signal(event);
+        // TODO: g_signal_connect(widget, signal, callback, data)
+        node.attributes
+            .push(crate::Attribute::new(format!("data-gtk-signal-{}", event), signal));
+        Ok(())
+    }
+
+    fn render_to_string(&self, node: &PlatformNode) -> PlatformResult<String> {
+        Ok(node.to_html())
+    }
+
+    fn mount(&self, _root: PlatformNode, _container_id: &str) -> PlatformResult<()> {
+        // TODO: get GtkWindow and call gtk_window_set_child(root)
+        Ok(())
+    }
+
+    fn patch(&self, _old: &PlatformNode, _new: &PlatformNode) -> PlatformResult<()> {
+        // TODO: diff and apply GTK mutations
+        Ok(())
+    }
+}