From 7ba9d95f9605d8e2af71e8455ecd8e993ac27f7a Mon Sep 17 00:00:00 2001
From: Byson94 <byson94@outlook.com>
Date: Fri, 10 Oct 2025 20:04:02 +0530
Subject: [PATCH] feat: added the ability to modify widgets

---
 Cargo.lock                                    |  1 +
 crates/ewwii/src/app.rs                       | 14 ++++++++++++++
 crates/ewwii/src/plugin.rs                    | 13 ++++++++++++-
 crates/ewwii_plugin_api/Cargo.toml            |  7 ++++---
 crates/ewwii_plugin_api/src/lib.rs            |  9 ++++++++-
 crates/ewwii_plugin_api/src/widget_backend.rs | 15 +++++++++++++++
 6 files changed, 54 insertions(+), 5 deletions(-)
 create mode 100644 crates/ewwii_plugin_api/src/widget_backend.rs

diff --git a/Cargo.lock b/Cargo.lock
index a10c151..ef1f940 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -529,6 +529,7 @@ dependencies = [
 name = "ewwii_plugin_api"
 version = "0.2.0"
 dependencies = [
+ "gtk4",
  "rhai",
 ]
 
diff --git a/crates/ewwii/src/app.rs b/crates/ewwii/src/app.rs
index ad07ce0..8f9febb 100644
--- a/crates/ewwii/src/app.rs
+++ b/crates/ewwii/src/app.rs
@@ -857,6 +857,20 @@ impl<B: DisplayBackend> App<B> {
                             }
                         }
                     }
+                    PluginRequest::WidgetRegistryAct(func) => {
+                        let mut wgs_guard = wgs.lock().unwrap();
+                        if let Some(ref mut registry) = *wgs_guard {
+                            let repr_map: HashMap<u64, &mut gtk4::Widget> = registry
+                                .widgets
+                                .iter_mut()
+                                .map(|(id, entry)| (*id, &mut entry.widget))
+                                .collect();
+
+                            func(&mut ewwii_plugin_api::widget_backend::WidgetRegistryRepr {
+                                widgets: repr_map,
+                            });
+                        }
+                    }
                 }
             }
         });
diff --git a/crates/ewwii/src/plugin.rs b/crates/ewwii/src/plugin.rs
index 425e45a..c84d3c0 100644
--- a/crates/ewwii/src/plugin.rs
+++ b/crates/ewwii/src/plugin.rs
@@ -1,4 +1,4 @@
-use ewwii_plugin_api::EwwiiAPI;
+use ewwii_plugin_api::{widget_backend, EwwiiAPI};
 use rhai::Engine;
 use std::sync::mpsc::{channel as mpsc_channel, Receiver, Sender};
 
@@ -46,9 +46,20 @@ impl EwwiiAPI for EwwiiImpl {
             Err(e) => Err(e.to_string()),
         }
     }
+
+    fn widget_reg_action(
+        &self,
+        f: Box<dyn FnOnce(&mut widget_backend::WidgetRegistryRepr) + Send>,
+    ) -> Result<(), String> {
+        self.requestor
+            .send(PluginRequest::WidgetRegistryAct(f))
+            .map_err(|_| "Failed to send request to host".to_string())?;
+        Ok(())
+    }
 }
 
 pub(crate) enum PluginRequest {
     RhaiEngineAct(Box<dyn FnOnce(&mut Engine) + Send>),
     ListWidgetIds(Sender<Vec<u64>>),
+    WidgetRegistryAct(Box<dyn FnOnce(&mut widget_backend::WidgetRegistryRepr) + Send>),
 }
diff --git a/crates/ewwii_plugin_api/Cargo.toml b/crates/ewwii_plugin_api/Cargo.toml
index d65fe1a..9d04811 100644
--- a/crates/ewwii_plugin_api/Cargo.toml
+++ b/crates/ewwii_plugin_api/Cargo.toml
@@ -1,12 +1,13 @@
 [package]
 name = "ewwii_plugin_api"
-version = "0.2.0"
+version = "0.3.0"
 authors = ["byson94 <byson94wastaken@gmail.com>"]
 edition = "2021"
 license = "GPL-3.0-or-later"
-description = "The full ewwii plugin API shared library for building plugins"
+description = "A shared library for building plugins for ewwii"
 repository = "https://github.com/byson94/ewwii"
 homepage = "https://github.com/byson94/ewwii"
 
 [dependencies]
-rhai.workspace = true
\ No newline at end of file
+rhai.workspace = true
+gtk4.workspace = true
\ No newline at end of file
diff --git a/crates/ewwii_plugin_api/src/lib.rs b/crates/ewwii_plugin_api/src/lib.rs
index ec51d56..2b49a7c 100644
--- a/crates/ewwii_plugin_api/src/lib.rs
+++ b/crates/ewwii_plugin_api/src/lib.rs
@@ -26,6 +26,7 @@
 //! ```
 
 pub mod export;
+pub mod widget_backend;
 
 use rhai::Engine;
 
@@ -42,12 +43,18 @@ pub trait EwwiiAPI: Send + Sync {
     fn error(&self, msg: &str);
 
     // == Rhai Manipulation Stuff == //
-    /// Perform an action on the current real-time rhai engine
+    /// Perform actions on the latest rhai engine
     fn rhai_engine_action(&self, f: Box<dyn FnOnce(&mut Engine) + Send>) -> Result<(), String>;
 
     // == Widget Rendering & Logic == //
     /// Get the list of all widget id's
     fn list_widget_ids(&self) -> Result<Vec<u64>, String>;
+
+    /// Perform actions on the latest widget registry
+    fn widget_reg_action(
+        &self,
+        f: Box<dyn FnOnce(&mut widget_backend::WidgetRegistryRepr) + Send>,
+    ) -> Result<(), String>;
 }
 
 /// The API format that the plugin should follow
diff --git a/crates/ewwii_plugin_api/src/widget_backend.rs b/crates/ewwii_plugin_api/src/widget_backend.rs
new file mode 100644
index 0000000..a17cee2
--- /dev/null
+++ b/crates/ewwii_plugin_api/src/widget_backend.rs
@@ -0,0 +1,15 @@
+//! Module exposing structures and types from the
+//! Widget rendering and definition backend in ewwii.
+
+use gtk4::Widget as GtkWidget;
+use std::collections::HashMap;
+
+/// A representation of widget registry which holds all the
+/// information needed for the dynamic runtime engine in ewwii.
+///
+/// Not every change in this structure will be represented in the 
+/// original WidgetRegistry in ewwii. Only the change on gtk4::Widget
+/// is reflected back.
+pub struct WidgetRegistryRepr<'a> {
+    pub widgets: HashMap<u64, &'a mut GtkWidget>,
+}