add more help to grab-help

wlx-overlay-s/src/overlays/anchor.rs

@@ -1,9 +1,14 @@
 use glam::{Affine3A, Quat, Vec3};
 use std::sync::{Arc, LazyLock};
+use wgui::event::{EventAlterables, StyleSetRequest};
+use wgui::parser::Fetchable;
+use wgui::taffy;
 use wlx_common::windowing::{OverlayWindowState, Positioning};
 
 use crate::gui::panel::GuiPanel;
+use crate::overlays::watch::WATCH_NAME;
 use crate::state::AppState;
+use crate::windowing::backend::OverlayEventData;
 use crate::windowing::window::OverlayWindowConfig;
 use crate::windowing::{Z_ORDER_ANCHOR, Z_ORDER_HELP};
 
@@ -38,6 +43,61 @@ pub fn create_grab_help(app: &mut AppState) -> anyhow::Result<OverlayWindowConfi
     let mut panel = GuiPanel::new_from_template(app, "gui/grab-help.xml", (), Default::default())?;
     panel.update_layout()?;
 
+    let id_watch = panel.parser_state.data.get_widget_id("grabbing_watch")?;
+    let id_static = panel.parser_state.data.get_widget_id("grabbing_static")?;
+    let id_anchored = panel.parser_state.data.get_widget_id("grabbing_anchored")?;
+    let id_anchored_edit = panel
+        .parser_state
+        .data
+        .get_widget_id("grabbing_anchored_edit")?;
+    let id_floating = panel.parser_state.data.get_widget_id("grabbing_floating")?;
+    let id_follow = panel.parser_state.data.get_widget_id("grabbing_follow")?;
+
+    let all = [
+        id_watch,
+        id_static,
+        id_anchored,
+        id_anchored_edit,
+        id_floating,
+        id_follow,
+    ];
+
+    panel.on_notify = Some(Box::new(move |panel, _app, event_data| {
+        let mut alterables = EventAlterables::default();
+
+        let OverlayEventData::OverlayGrabbed { name, pos, editing } = event_data else {
+            return Ok(());
+        };
+
+        let show_id = match pos {
+            Positioning::Static => id_static,
+            Positioning::Floating => id_floating,
+            Positioning::Anchored => {
+                if editing {
+                    id_anchored_edit
+                } else {
+                    id_anchored
+                }
+            }
+            Positioning::FollowHand { .. } if &*name == WATCH_NAME => id_watch,
+            Positioning::FollowHead { .. } | Positioning::FollowHand { .. } => id_follow,
+        };
+
+        for id in &all {
+            let display = if *id == show_id {
+                taffy::Display::Flex
+            } else {
+                taffy::Display::None
+            };
+
+            alterables.set_style(*id, StyleSetRequest::Display(display));
+        }
+
+        panel.layout.process_alterables(alterables)?;
+
+        Ok(())
+    }));
+
     Ok(OverlayWindowConfig {
         name: GRAB_HELP_NAME.clone(),
         z_order: Z_ORDER_HELP,

wlx-overlay-s/src/overlays/watch.rs

@@ -420,6 +420,7 @@ pub fn create_watch(app: &mut AppState) -> anyhow::Result<OverlayWindowConfig> {
                     }
                 }
             }
+            _ => {}
         }
 
         panel.layout.process_alterables(alterables)?;