From dc7af935ecee646365df1c546290f981ee3da8ff Mon Sep 17 00:00:00 2001
From: Alexander Heldt <me@alexanderheldt.se>
Date: Fri, 26 Dec 2025 11:53:08 +0100
Subject: [PATCH] Replaced `Node.content` with `Node.heading`

---
 src/musicplayer/musicplayer.gleam             |  6 +--
 src/musicplayer/ui/control.gleam              |  2 +-
 src/musicplayer/ui/layout.gleam               | 43 ++++++++++++-------
 .../ui/layout_examples/layout_examples.gleam  | 10 +++--
 src/musicplayer/ui/plot.gleam                 | 12 ++++++
 src/musicplayer/ui/ui.gleam                   | 15 ++++---
 test/musicplayer/ui/layout_test.gleam         |  9 ++--
 7 files changed, 62 insertions(+), 35 deletions(-)

diff --git a/src/musicplayer/musicplayer.gleam b/src/musicplayer/musicplayer.gleam
index a3dc53d..7e0f399 100644
--- a/src/musicplayer/musicplayer.gleam
+++ b/src/musicplayer/musicplayer.gleam
@@ -134,7 +134,7 @@ fn update_playback_time(
     Error(err) ->
       process.send(
         ui,
-        ui_control.UpdateState(
+        ui_control.UpdateHeading(
           layout.PlaybackTime,
           "playback time: N/A (err: " <> err.details <> ")",
         ),
@@ -143,7 +143,7 @@ fn update_playback_time(
     Ok(mpv_control.PlaybackTime(data: playback_time)) ->
       process.send(
         ui,
-        ui_control.UpdateState(
+        ui_control.UpdateHeading(
           layout.PlaybackTime,
           "playback time: " <> time.to_duration_string(playback_time),
         ),
@@ -152,7 +152,7 @@ fn update_playback_time(
 }
 
 fn update_search(ui: Subject(ui_control.Control), content: String) -> Nil {
-  process.send(ui, ui_control.UpdateState(layout.Search, content))
+  process.send(ui, ui_control.UpdateHeading(layout.Search, content))
 }
 
 fn update_current_view(
diff --git a/src/musicplayer/ui/control.gleam b/src/musicplayer/ui/control.gleam
index a800761..c97c09b 100644
--- a/src/musicplayer/ui/control.gleam
+++ b/src/musicplayer/ui/control.gleam
@@ -4,7 +4,7 @@ import musicplayer/ui/layout.{type Section, type ViewIdx}
 
 pub type Control {
   UpdateDimensions(columns: Int, rows: Int)
-  UpdateState(section: Section, content: String)
+  UpdateHeading(section: Section, heading: String)
   SetView(view_idx: ViewIdx)
 
   Exit(reply_to: Subject(Nil))
diff --git a/src/musicplayer/ui/layout.gleam b/src/musicplayer/ui/layout.gleam
index ff845f6..c09496e 100644
--- a/src/musicplayer/ui/layout.gleam
+++ b/src/musicplayer/ui/layout.gleam
@@ -1,6 +1,7 @@
 import gleam/dict
 import gleam/int
 import gleam/list
+import gleam/option.{type Option, None, Some}
 import gleam/pair
 import gleam/set
 import gleam/string
@@ -28,8 +29,8 @@ pub type Style {
 }
 
 pub type Node {
-  Row(content: String, style: Style, children: List(Section))
-  Cell(content: String, style: Style)
+  Row(heading: Option(String), style: Style, children: List(Section))
+  Cell(heading: Option(String), style: Style)
 }
 
 pub type ViewIdx =
@@ -86,7 +87,7 @@ fn view_loop(i: ViewIdx, view_nodes: List(#(Section, Node))) -> View {
   |> dict.insert(
     view_index_section(i),
     Row(
-      content: "",
+      heading: None,
       style: Style(dimensions: Percent(width: 100, height: 100)),
       children: orphans,
     ),
@@ -98,10 +99,10 @@ fn view_index_section(view_idx: ViewIdx) -> Section {
   Section(string.append("view_", int.to_string(view_idx)))
 }
 
-pub fn update_section(
+pub fn update_section_heading(
   layout: Layout,
   section: Section,
-  content: String,
+  heading: String,
 ) -> Layout {
   case dict.get(layout.views, layout.current_view) {
     Error(_) -> layout
@@ -110,8 +111,8 @@ pub fn update_section(
         Error(_) -> layout
         Ok(node) -> {
           let updated_node = case node {
-            Cell(..) -> Cell(..node, content: content)
-            Row(..) -> Row(..node, content: content)
+            Cell(..) -> Cell(..node, heading: Some(heading))
+            Row(..) -> Row(..node, heading: Some(heading))
           }
 
           let updated_view = dict.insert(view, section, updated_node)
@@ -203,15 +204,25 @@ pub fn render_loop(
         )
       }
 
-      let parent =
-        plot.box(
-          buffer,
-          node_top_left_x,
-          node_top_left_y,
-          node_width,
-          node_height,
-        )
-        |> plot.text(node.content, node_top_left_x, node_top_left_y)
+      let parent = case node.heading {
+        None ->
+          plot.box(
+            buffer,
+            node_top_left_x,
+            node_top_left_y,
+            node_width,
+            node_height,
+          )
+        option.Some(heading) ->
+          plot.box_with_heading(
+            buffer,
+            node_top_left_x,
+            node_top_left_y,
+            node_width,
+            node_height,
+            heading,
+          )
+      }
 
       case node {
         Cell(..) -> parent
diff --git a/src/musicplayer/ui/layout_examples/layout_examples.gleam b/src/musicplayer/ui/layout_examples/layout_examples.gleam
index 55e127c..1cbc8ed 100644
--- a/src/musicplayer/ui/layout_examples/layout_examples.gleam
+++ b/src/musicplayer/ui/layout_examples/layout_examples.gleam
@@ -1,3 +1,5 @@
+import gleam/option.{Some}
+
 import musicplayer/ui/internal
 import musicplayer/ui/layout.{Percent, Section, Style}
 import musicplayer/ui/layout_examples/wait_for_input.{wait_for_input}
@@ -21,7 +23,7 @@ fn two_rows_with_cells(columns: Int, rows: Int) -> layout.Layout {
       #(
         Section("Row1"),
         layout.Row(
-          content: "row 1",
+          heading: Some("row 1"),
           style: Style(dimensions: Percent(width: 100, height: 50)),
           children: [
             Section("A"),
@@ -32,21 +34,21 @@ fn two_rows_with_cells(columns: Int, rows: Int) -> layout.Layout {
       #(
         Section("A"),
         layout.Cell(
-          content: "cell 1",
+          heading: Some("cell 1"),
           style: Style(dimensions: Percent(width: 50, height: 50)),
         ),
       ),
       #(
         Section("B"),
         layout.Cell(
-          content: "cell 2",
+          heading: Some("cell 2"),
           style: Style(dimensions: Percent(width: 50, height: 50)),
         ),
       ),
       #(
         Section("Row2"),
         layout.Row(
-          content: "row 2",
+          heading: Some("row 2"),
           style: Style(dimensions: Percent(width: 50, height: 50)),
           children: [],
         ),
diff --git a/src/musicplayer/ui/plot.gleam b/src/musicplayer/ui/plot.gleam
index 4868bf3..32bd5be 100644
--- a/src/musicplayer/ui/plot.gleam
+++ b/src/musicplayer/ui/plot.gleam
@@ -49,6 +49,18 @@ pub fn box(buffer: Buffer, x: Int, y: Int, width: Int, height: Int) -> Buffer {
   }
 }
 
+pub fn box_with_heading(
+  buffer: Buffer,
+  x: Int,
+  y: Int,
+  width: Int,
+  height: Int,
+  heading: String,
+) -> Buffer {
+  box(buffer, x, y, width, height)
+  |> text(heading, x, y)
+}
+
 fn horizontal_line(
   buffer: Buffer,
   x: Int,
diff --git a/src/musicplayer/ui/ui.gleam b/src/musicplayer/ui/ui.gleam
index a12fede..d271f1a 100644
--- a/src/musicplayer/ui/ui.gleam
+++ b/src/musicplayer/ui/ui.gleam
@@ -1,6 +1,7 @@
 import gleam/erlang/process.{type Subject}
 import gleam/int
 import gleam/list
+import gleam/option.{None, Some}
 import gleam/otp/actor
 import gleam/string
 
@@ -23,7 +24,7 @@ pub fn new() -> Result(Subject(Control), String) {
         #(
           layout.Header,
           layout.Row(
-            content: "Foo <1> | Bar (2)",
+            heading: Some("Foo <1> | Bar (2)"),
             style: layout.Style(dimensions: layout.Percent(
               width: 100,
               height: 50,
@@ -34,7 +35,7 @@ pub fn new() -> Result(Subject(Control), String) {
         #(
           layout.PlaybackTime,
           layout.Row(
-            content: "00:00",
+            heading: None,
             style: layout.Style(dimensions: layout.Percent(
               width: 100,
               height: 50,
@@ -47,7 +48,7 @@ pub fn new() -> Result(Subject(Control), String) {
         #(
           layout.Header,
           layout.Row(
-            content: "Foo (1) | Bar <2>",
+            heading: Some("Foo (1) | Bar <2>"),
             style: layout.Style(dimensions: layout.Percent(
               width: 100,
               height: 33,
@@ -58,7 +59,7 @@ pub fn new() -> Result(Subject(Control), String) {
         #(
           layout.Search,
           layout.Row(
-            content: "",
+            heading: None,
             style: layout.Style(dimensions: layout.Percent(
               width: 100,
               height: 33,
@@ -69,7 +70,7 @@ pub fn new() -> Result(Subject(Control), String) {
         #(
           layout.PlaybackTime,
           layout.Row(
-            content: "00:00",
+            heading: None,
             style: layout.Style(dimensions: layout.Percent(
               width: 100,
               height: 33,
@@ -132,8 +133,8 @@ fn handle_message(
         }
       }
     }
-    control.UpdateState(section, content) -> {
-      let layout = layout.update_section(state.layout, section, content)
+    control.UpdateHeading(section, heading) -> {
+      let layout = layout.update_section_heading(state.layout, section, heading)
 
       actor.send(state.redraw, layout)
       actor.continue(State(..state, layout:))
diff --git a/test/musicplayer/ui/layout_test.gleam b/test/musicplayer/ui/layout_test.gleam
index 871889e..dfe1cd4 100644
--- a/test/musicplayer/ui/layout_test.gleam
+++ b/test/musicplayer/ui/layout_test.gleam
@@ -1,5 +1,6 @@
 import gleam/dict
 import gleam/io
+import gleam/option.{Some}
 import gleam/string
 import gleeunit
 import gleeunit/should
@@ -17,7 +18,7 @@ pub fn percent_layout_test() {
       #(
         Section("Row1"),
         layout.Row(
-          content: "row 1",
+          heading: Some("row 1"),
           style: Style(dimensions: Percent(width: 100, height: 50)),
           children: [
             Section("A"),
@@ -28,21 +29,21 @@ pub fn percent_layout_test() {
       #(
         Section("A"),
         layout.Cell(
-          content: "cell 1",
+          heading: Some("cell 1"),
           style: Style(dimensions: Percent(width: 50, height: 100)),
         ),
       ),
       #(
         Section("B"),
         layout.Cell(
-          content: "cell 2",
+          heading: Some("cell 2"),
           style: Style(dimensions: Percent(width: 50, height: 100)),
         ),
       ),
       #(
         Section("Row2"),
         layout.Row(
-          content: "row 1",
+          heading: Some("row 1"),
           style: Style(dimensions: Percent(width: 100, height: 50)),
           children: [],
         ),