use-string-trees

src/musicplayer/control.gleam

@@ -1,58 +1,30 @@
-import gleam/string
-import musicplayer/ui/layout
-
 import musicplayer/input/key.{type Key}
 
-pub type Mode {
-  Idle
-  Searching(input: String)
-}
-
 pub type Control {
   TogglePlayPause
-  Search(input: String, capturing: Bool)
+  Search
 
-  SetView(view_idx: layout.ViewIdx)
+  Raw(String)
+  Return
+  Backspace
 
   Exit
 }
 
-pub fn from_key(key: Key, mode: Mode) -> Result(Control, Nil) {
+pub fn from_key(key: Key) -> Result(Control, Nil) {
-  case mode {
+  case key {
-    Idle -> idle_from_key(key)
+    key.Return -> Ok(Return)
-    Searching(input) -> searching_from_key(key, input)
+    key.Backspace -> Ok(Backspace)
+    key.Char(char) -> Ok(char_control(char))
+    _ -> Error(Nil)
   }
 }
 
-pub fn idle_from_key(key: Key) -> Result(Control, Nil) {
+fn char_control(char: String) -> Control {
-  case key {
-    key.Char(char) -> {
   case char {
-        // Views are zero indexed
+    " " -> TogglePlayPause
-        "1" -> Ok(SetView(0))
+    "/" -> Search
-        "2" -> Ok(SetView(1))
+    "q" -> Exit
-
+    _ -> Raw(char)
-        " " -> Ok(TogglePlayPause)
-        "/" -> Ok(Search(input: "", capturing: True))
-        "q" -> Ok(Exit)
-
-        // NOOP
-        _ -> Error(Nil)
-      }
-    }
-
-    // NOOP
-    _ -> Error(Nil)
-  }
-}
-
-pub fn searching_from_key(key: Key, input: String) -> Result(Control, Nil) {
-  case key {
-    key.Char(char) -> Ok(Search(input <> char, True))
-    key.Backspace -> Ok(Search(string.drop_end(input, 1), True))
-    key.Return -> Ok(Search(input, False))
-
-    // NOOP
-    _ -> Error(Nil)
   }
 }

src/musicplayer/musicplayer.gleam

@@ -1,8 +1,9 @@
 import gleam/erlang/process.{type Name, type Pid, type Subject}
 import gleam/otp/actor
+import gleam/result
 import gleam/string
 
-import musicplayer/control.{type Mode}
+import musicplayer/control.{type Control}
 import musicplayer/input/key.{type Key}
 import musicplayer/logging/logging
 import musicplayer/mpv/control as mpv_control
@@ -10,9 +11,19 @@ import musicplayer/time/time
 import musicplayer/ui/control as ui_control
 import musicplayer/ui/layout
 
+type Mode {
+  Idle
+  Searching
+}
+
+type Input {
+  Input(capturing: Bool, content: String)
+}
+
 type State {
   State(
     mode: Mode,
+    input: Input,
     ui: Subject(ui_control.Control),
     mpv: Subject(mpv_control.Control),
   )
@@ -25,8 +36,10 @@ pub fn new(
 ) -> Result(Pid, String) {
   let input_keys = process.named_subject(input_keys_name)
 
+  let input = Input(False, "")
+
   case
-    actor.new(State(control.Idle, ui, mpv))
+    actor.new(State(Idle, input, ui, mpv))
     |> actor.on_message(handle_message)
     |> actor.start
   {
@@ -36,53 +49,75 @@ pub fn new(
       logging.log("musicplayer - started")
       process.spawn(fn() {
         let assert Ok(_) = process.register(process.self(), input_keys_name)
-        forward_key(musicplayer, input_keys)
+        handle_key(musicplayer, input_keys)
       })
 
-      process.spawn(fn() { update_playback_time_loop(mpv, ui, 250) })
+      process.spawn(fn() { update_playback_time_loop(mpv, ui, 1000) })
 
       Ok(pid)
     }
   }
 }
 
-fn handle_message(state: State, key: Key) -> actor.Next(State, Key) {
+fn handle_message(state: State, control: Control) -> actor.Next(State, Control) {
-  case control.from_key(key, state.mode) {
+  case control {
-    Error(_) -> actor.continue(state)
+    control.Search -> {
-    Ok(c) ->
+      logging.log("musicplayer - initiating search")
-      case c {
+
-        control.SetView(view_idx) -> {
+      update_search(state.ui, "searching: ")
-          logging.log(
+
-            "musicplayer - setting current view to: "
+      actor.continue(
-            <> string.inspect(view_idx),
+        State(
+          ..state,
+          mode: Searching,
+          input: Input(..state.input, capturing: True),
+        ),
       )
-
-          update_current_view(state.ui, view_idx)
-          actor.continue(state)
     }
-        control.Search(input, capturing) -> {
-          case capturing {
-            True -> {
-              logging.log("musicplayer - searching: " <> input)
 
-              update_search(state.ui, "searching: " <> input)
+    control.Raw(content) -> {
+      logging.log("musicplayer - recieved raw input: " <> content)
 
-              actor.continue(State(..state, mode: control.Searching(input)))
+      let content = case state.mode {
+        Idle -> state.input.content
+        Searching -> {
+          let updated = state.input.content <> content
+          update_search(state.ui, "searching: " <> updated)
+          updated
         }
-            False -> {
+      }
+
+      actor.continue(State(..state, input: Input(..state.input, content:)))
+    }
+    control.Backspace -> {
+      logging.log("musicplayer - recieved backspace")
+
+      let content = case state.mode {
+        Idle -> state.input.content
+        Searching -> string.drop_end(state.input.content, 1)
+      }
+      actor.continue(State(..state, input: Input(..state.input, content:)))
+    }
+    control.Return -> {
       logging.log(
-                "musicplayer - recieved return. `input`: "
+        "musicplayer - recieved return. `input.capture`: "
         <> "'"
-                <> input
+        <> state.input.content
         <> "'",
       )
 
-              update_search(state.ui, "")
+      // Note: state.input.content is now the final input, use it
+      // before it is reset
+      case state.mode {
+        Idle -> Nil
+        Searching -> update_search(state.ui, "")
+      }
 
-              actor.continue(State(..state, mode: control.Idle))
+      actor.continue(
-            }
+        State(..state, mode: Idle, input: Input(capturing: False, content: "")),
-          }
+      )
     }
+
     control.TogglePlayPause -> {
       logging.log("musicplayer - toggling play/pause")
 
@@ -93,21 +128,16 @@ fn handle_message(state: State, key: Key) -> actor.Next(State, Key) {
     control.Exit -> {
       logging.log("musicplayer - initiating musicplayer shutdown")
       // Close `mpv` socket
-          process.call(state.mpv, 1000, fn(reply_to) {
+      process.call(state.mpv, 1000, fn(reply_to) { mpv_control.Exit(reply_to) })
-            mpv_control.Exit(reply_to)
-          })
 
       // Reset terminal state (show cursor etc.)
-          process.call(state.ui, 1000, fn(reply_to) {
+      process.call(state.ui, 1000, fn(reply_to) { ui_control.Exit(reply_to) })
-            ui_control.Exit(reply_to)
-          })
 
       logging.log("musicplayer - stopped")
 
       actor.stop()
     }
   }
-  }
 }
 
 fn update_playback_time_loop(
@@ -134,7 +164,7 @@ fn update_playback_time(
     Error(err) ->
       process.send(
         ui,
-        ui_control.UpdateHeading(
+        ui_control.UpdateState(
           layout.PlaybackTime,
           "playback time: N/A (err: " <> err.details <> ")",
         ),
@@ -143,7 +173,7 @@ fn update_playback_time(
     Ok(mpv_control.PlaybackTime(data: playback_time)) ->
       process.send(
         ui,
-        ui_control.UpdateHeading(
+        ui_control.UpdateState(
           layout.PlaybackTime,
           "playback time: " <> time.to_duration_string(playback_time),
         ),
@@ -152,24 +182,17 @@ fn update_playback_time(
 }
 
 fn update_search(ui: Subject(ui_control.Control), content: String) -> Nil {
-  process.send(ui, ui_control.UpdateHeading(layout.Search, content))
+  process.send(ui, ui_control.UpdateState(layout.Search, content))
 }
 
-fn update_current_view(
+/// `handle_key` listens to a subject onto which `input` will send messages with `Key`s
-  ui: Subject(ui_control.Control),
+fn handle_key(musicplayer: Subject(Control), input_keys: Subject(Key)) -> Nil {
-  view_idx: layout.ViewIdx,
-) {
-  process.send(ui, ui_control.SetView(view_idx))
-}
-
-/// `forward_key` listens to a subject onto which `input` will send messages with `Key`s
-/// that is then forwarded to the `musicplayer` agent to handle
-fn forward_key(musicplayer: Subject(Key), input_keys: Subject(Key)) -> Nil {
   let _ =
     process.new_selector()
     |> process.select(input_keys)
     |> process.selector_receive_forever
-    |> process.send(musicplayer, _)
+    |> control.from_key
+    |> result.map(process.send(musicplayer, _))
 
-  forward_key(musicplayer, input_keys)
+  handle_key(musicplayer, input_keys)
 }

src/musicplayer/ui/control.gleam

@@ -1,11 +1,10 @@
 import gleam/erlang/process.{type Subject}
 
-import musicplayer/ui/layout.{type Section, type ViewIdx}
+import musicplayer/ui/layout.{type Section}
 
 pub type Control {
-  UpdateDimensions(columns: Int, rows: Int)
+  UpdateDimensions(width: Int, height: Int)
-  UpdateHeading(section: Section, heading: String)
+  UpdateState(section: Section, content: String)
-  SetView(view_idx: ViewIdx)
 
   Exit(reply_to: Subject(Nil))
 }

src/musicplayer/ui/internal.gleam

@@ -3,16 +3,6 @@ import gleam/io
 
 // https://en.wikipedia.org/wiki/ANSI_escape_code#Control_Sequence_Introducer_commands
 
-pub const move_to_home = "\u{001B}[H"
-
-pub const disable_auto_wrap = "\u{001B}[?7l"
-
-pub const enable_auto_wrap = "\u{001B}[?7h"
-
-pub fn update(frame: String) -> Nil {
-  io.print(disable_auto_wrap <> move_to_home <> frame <> enable_auto_wrap)
-}
-
 pub fn clear_screen() -> Nil {
   io.print("\u{001B}[2J\u{001B}[H")
 }
@@ -22,6 +12,10 @@ pub fn chars_at(chars: String, x: Int, y: Int) -> String {
   seq <> chars
 }
 
+pub fn print(chars: String) -> Nil {
+  io.print(chars)
+}
+
 pub fn hide_cursor() -> Nil {
   io.print("\u{001B}[?25l")
 }

src/musicplayer/ui/layout.gleam

@@ -1,251 +1,279 @@
 import gleam/dict
+import gleam/float
 import gleam/int
 import gleam/list
-import gleam/option.{type Option, None, Some}
-import gleam/pair
-import gleam/set
 import gleam/string
+import gleam/string_tree.{type StringTree}
 
+import musicplayer/logging/logging
 import musicplayer/ui/internal
-import musicplayer/ui/plot.{type Buffer}
-import musicplayer/ui/style.{type Style, Percent, Style}
 
-pub const root_section = "reserved_root_section"
+pub type Layout {
+  Layout(width: Int, height: Int, nodes: dict.Dict(Section, Node))
+}
 
 pub type Section {
   Section(String)
 
+  Root
   Header
   Search
   PlaybackTime
 }
 
+// pub type Section {
+//   Root
+//   Header
+//   Search
+//   PlaybackTime
+//   Test
+
+//   Row1
+//   A
+//   B
+
+//   Row2
+//   C
+//   D
+// }
+
+pub type NodeType {
+  Container
+  Row
+  Cell
+}
+
+/// A Nodes width and height is in percentage (of the available width/height of its parent Node)
 pub type Node {
-  Row(heading: Option(String), style: Style, children: List(Section))
+  Node(
-  Cell(heading: Option(String), style: Style)
+    t: NodeType,
-}
+    content: String,
-
+    width_percent: Int,
-pub type ViewIdx =
+    height_percent: Int,
-  Int
+    children: List(Section),
-
-pub type View =
-  dict.Dict(Section, Node)
-
-// Layout consists of a list Views, and only one View is rendered at a time
-pub type Layout {
-  Layout(
-    columns: Int,
-    rows: Int,
-    current_view: ViewIdx,
-    views: dict.Dict(ViewIdx, View),
   )
 }
 
-pub fn new(
+pub fn new() -> Layout {
-  columns: Int,
+  let nodes =
-  rows: Int,
+    dict.from_list([
-  views: List(List(#(Section, Node))),
+      #(
-) -> Layout {
+        Section("Root"),
-  let views =
+        Node(
-    list.index_map(views, fn(view_nodes, i) { #(i, view_nodes) })
+          t: Container,
-    |> list.fold(dict.new(), fn(view_acc, iv) {
+          content: "container",
-      let #(i, view_nodes) = iv
+          width_percent: 100,
-
+          height_percent: 100,
-      dict.insert(view_acc, i, view_loop(i, view_nodes))
+          children: [
-    })
+            Section("Row1"),
-
+            Section("Row2"),
-  Layout(columns:, rows:, current_view: 0, views:)
+          ],
-}
-
-fn view_loop(i: ViewIdx, view_nodes: List(#(Section, Node))) -> View {
-  let children =
-    view_nodes
-    |> list.flat_map(fn(node) {
-      case pair.second(node) {
-        Row(children: c, ..) -> c
-        Cell(..) -> []
-      }
-    })
-    |> set.from_list
-
-  // All sections that are not children of other nodes will be added as
-  // children to the root
-  let orphans =
-    view_nodes
-    |> list.map(pair.first)
-    |> list.filter(fn(node) { !set.contains(children, node) })
-
-  dict.from_list(view_nodes)
-  |> dict.insert(
-    view_index_section(i),
-    Row(
-      heading: None,
-      style: Style(dimensions: Percent(width: 100, height: 100), border: None),
-      children: orphans,
         ),
-  )
+      ),
+      #(
+        Section("Row1"),
+        Node(
+          t: Row,
+          content: "row 1",
+          width_percent: 100,
+          height_percent: 50,
+          children: [
+            Section("A"),
+            Section("A"),
+          ],
+        ),
+      ),
+      #(
+        Section("A"),
+        Node(
+          t: Cell,
+          content: "cell 1",
+          width_percent: 50,
+          height_percent: 100,
+          children: [],
+        ),
+      ),
+      #(
+        Section("B"),
+        Node(
+          t: Cell,
+          content: "cell 2",
+          width_percent: 50,
+          height_percent: 100,
+          children: [],
+        ),
+      ),
+      #(
+        Section("Row2"),
+        Node(
+          t: Row,
+          content: "row 1",
+          width_percent: 100,
+          height_percent: 50,
+          children: [],
+        ),
+      ),
+    ])
+
+  Layout(width: 0, height: 0, nodes: nodes)
 }
 
-/// Takes a ViewIndex and create a Section key from it
+pub fn update_section(
-fn view_index_section(view_idx: ViewIdx) -> Section {
-  Section(string.append("view_", int.to_string(view_idx)))
-}
-
-pub fn update_section_heading(
   layout: Layout,
   section: Section,
-  heading: String,
+  content: String,
 ) -> Layout {
-  case dict.get(layout.views, layout.current_view) {
+  case dict.get(layout.nodes, section) {
     Error(_) -> layout
-    Ok(view) ->
+    Ok(node) ->
-      case dict.get(view, section) {
-        Error(_) -> layout
-        Ok(node) -> {
-          let updated_node = case node {
-            Cell(..) -> Cell(..node, heading: Some(heading))
-            Row(..) -> Row(..node, heading: Some(heading))
-          }
-
-          let updated_view = dict.insert(view, section, updated_node)
-
       Layout(
         ..layout,
-            views: dict.insert(layout.views, layout.current_view, updated_view),
+        nodes: dict.insert(
+          layout.nodes,
+          section,
+          Node(..node, content: content),
+        ),
       )
   }
-      }
-  }
 }
 
-pub fn update_dimensions(layout: Layout, columns: Int, rows: Int) -> Layout {
+pub fn update_dimensions(layout: Layout, width: Int, height: Int) -> Layout {
-  Layout(..layout, columns:, rows:)
+  Layout(..layout, width:, height:)
-}
-
-pub fn update_current_view(layout: Layout, view_idx: ViewIdx) -> Layout {
-  Layout(..layout, current_view: view_idx)
 }
 
 pub fn render(layout: Layout) -> Nil {
-  let context =
+  internal.clear_screen()
-    RenderContext(
+  [layout.width, layout.height]
-      parent_width: layout.columns,
+  |> list.map(int.to_string)
-      parent_height: layout.rows,
+  |> string.join(" ")
-      parent_top_left_x: 1,
+  |> string.append("layout - render: ", _)
-      parent_top_left_y: 1,
+  |> logging.log
-      position_index: 0,
-    )
 
-  case dict.get(layout.views, layout.current_view) {
+  let container_width = int.to_float(layout.width)
-    Error(_) -> Nil
+  let container_height = int.to_float(layout.height)
-    Ok(view) -> {
+  let container_top_left_x = 1
-      let buffer: Buffer = dict.new()
+  let container_top_left_y = 1
 
-      render_loop(
+  string_tree.new()
-        view,
+  |> render_loop(
-        context,
+    layout,
-        view_index_section(layout.current_view),
+    container_width,
-        buffer,
+    container_height,
-      )
+    container_top_left_x,
-      |> plot.flush_buffer(layout.columns, layout.rows)
+    container_top_left_y,
-      |> internal.update
+    0,
-    }
+    Section("Root"),
-  }
+    _,
-}
-
-pub type RenderContext {
-  RenderContext(
-    parent_width: Int,
-    parent_height: Int,
-    parent_top_left_x: Int,
-    parent_top_left_y: Int,
-    position_index: Int,
   )
+  |> string_tree.to_string
+  |> internal.print
 }
 
 pub fn render_loop(
-  view: View,
+  layout: Layout,
-  context: RenderContext,
+  container_width: Float,
+  container_height: Float,
+  container_top_left_x: Int,
+  container_top_left_y: Int,
+  index: Int,
   from: Section,
-  buffer: Buffer,
+  tree: StringTree,
-) -> Buffer {
+) -> StringTree {
-  case dict.get(view, from) {
+  let margin = 2.0
-    Error(_) -> buffer
+
+  case dict.get(layout.nodes, from) {
+    Error(_) -> tree
     Ok(node) -> {
-      // Margin between container and the node being rendered
+      let final_tree =
-      let margin = 2
+        list.index_map(node.children, fn(child, i) { #(i, child) })
-
+        |> list.fold(tree, fn(updated_tree: StringTree, ic: #(Int, Section)) {
-      let #(node_width, node_height) = case node.style.dimensions {
-        Percent(width:, height:) -> {
-          let width = { context.parent_width * width } / 100
-          let height = { context.parent_height * height } / 100
-
-          #(width, height)
-        }
-      }
-
-      // Check if this node should be placed to the left or below the parent
-      let #(node_top_left_x, node_top_left_y) = case node {
-        Row(..) -> #(
-          context.parent_top_left_x,
-          context.parent_top_left_y + { context.position_index * node_height },
-        )
-        Cell(..) -> #(
-          context.parent_top_left_x + { context.position_index * node_width },
-          context.parent_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
-        Row(children:, ..) -> {
-          list.index_map(children, fn(child, i) { #(i, child) })
-          |> list.fold(parent, fn(acc_buffer, ic) {
           let #(i, child) = ic
 
-            let #(child_width, child_height) = case node.style.dimensions {
+          let cw =
-              Percent(width:, height:) -> {
+            container_width
-                let width = { { context.parent_width * width } / 100 } - margin
+            *. { int.to_float(node.width_percent) /. 100.0 }
-                let height =
+            -. margin
-                  { { context.parent_height * height } / 100 } - margin
+            |> float.floor
 
-                #(width, height)
+          let ch =
-              }
+            container_height
-            }
+            *. { int.to_float(node.height_percent) /. 100.0 }
+            -. margin
+            |> float.floor
 
-            let context =
+          let cx = container_top_left_x + 1
-              RenderContext(
+          let cy = container_top_left_y + 1
-                parent_width: child_width,
+          render_loop(layout, cw, ch, cx, cy, i, child, updated_tree)
-                parent_height: child_height,
-                parent_top_left_x: context.parent_top_left_x + 1,
-                parent_top_left_y: context.parent_top_left_y + 1,
-                position_index: i,
-              )
-
-            render_loop(view, context, child, acc_buffer)
         })
+
+      logging.log("section: " <> string.inspect(from))
+      logging.log("section type: " <> string.inspect(node.t))
+      logging.log("index: " <> string.inspect(index))
+      logging.log("container width: " <> float.to_string(container_width))
+      logging.log("container height: " <> float.to_string(container_height))
+
+      let width =
+        container_width *. { int.to_float(node.width_percent) /. 100.0 }
+        |> float.floor
+        |> float.truncate
+
+      let height =
+        container_height *. { int.to_float(node.height_percent) /. 100.0 }
+        |> float.floor
+        |> float.truncate
+
+      logging.log("section width: " <> int.to_string(width))
+      logging.log("section height: " <> int.to_string(height))
+
+      let #(cx, cy) = case node.t {
+        Container -> #(container_top_left_x, container_top_left_y)
+        Row -> #(
+          container_top_left_x,
+          container_top_left_y + { index * height },
+        )
+        Cell -> #(
+          container_top_left_x + { index * width },
+          container_top_left_y,
+        )
       }
-      }
+
+      logging.log("cx: " <> int.to_string(cx))
+      logging.log("cy: " <> int.to_string(cy))
+
+      final_tree
+      |> string_tree.append(draw_box(cx, cy, width, height))
+      // Box heading
+      |> string_tree.append(internal.chars_at(node.content, cx, cy))
     }
   }
 }
+
+fn draw_box(x: Int, y: Int, width: Int, height: Int) -> String {
+  let box_tree = string_tree.new()
+  let box_chars = #("┌", "┐", "└", "┘", "─", "│")
+  let #(tl, tr, bl, br, h, v) = box_chars
+
+  let box_tree =
+    string_tree.append(
+      box_tree,
+      internal.chars_at(tl <> string.repeat(h, width - 2) <> tr, x, y),
+    )
+
+  let box_trees =
+    list.range(1, height - 2)
+    |> list.map(fn(row) {
+      box_tree
+      |> string_tree.append(internal.chars_at(v, x, y + row))
+      |> string_tree.append(internal.chars_at(v, x + width - 1, y + row))
+    })
+
+  string_tree.append(
+    string_tree.concat(box_trees),
+    internal.chars_at(
+      bl <> string.repeat(h, width - 2) <> br,
+      x,
+      y + height - 1,
+    ),
+  )
+  |> string_tree.to_string
+}

src/musicplayer/ui/layout_examples/layout_examples.gleam

@@ -1,73 +0,0 @@
-import gleam/option.{Some}
-
-import musicplayer/ui/internal
-import musicplayer/ui/layout.{Section}
-import musicplayer/ui/layout_examples/wait_for_input.{wait_for_input}
-import musicplayer/ui/style.{Percent, Style}
-
-pub fn main() {
-  let assert Ok(columns) = internal.io_get_columns()
-  let assert Ok(rows) = internal.io_get_rows()
-
-  two_rows_with_cells(columns, rows)
-  |> layout.render
-
-  wait_for_input()
-}
-
-/// Two rows:
-/// First row has two cells
-/// Second row has no cells
-fn two_rows_with_cells(columns: Int, rows: Int) -> layout.Layout {
-  let views = [
-    [
-      #(
-        Section("Row1"),
-        layout.Row(
-          heading: Some("row 1"),
-          style: Style(
-            dimensions: Percent(width: 100, height: 50),
-            border: Some(style.BorderSingle),
-          ),
-          children: [
-            Section("A"),
-            Section("B"),
-          ],
-        ),
-      ),
-      #(
-        Section("A"),
-        layout.Cell(
-          heading: Some("cell 1"),
-          style: Style(
-            dimensions: Percent(width: 50, height: 50),
-            border: Some(style.BorderSingle),
-          ),
-        ),
-      ),
-      #(
-        Section("B"),
-        layout.Cell(
-          heading: Some("cell 2"),
-          style: Style(
-            dimensions: Percent(width: 50, height: 50),
-            border: Some(style.BorderSingle),
-          ),
-        ),
-      ),
-      #(
-        Section("Row2"),
-        layout.Row(
-          heading: Some("row 2"),
-          style: Style(
-            dimensions: Percent(width: 50, height: 50),
-            border: Some(style.BorderSingle),
-          ),
-          children: [],
-        ),
-      ),
-    ],
-  ]
-
-  layout.new(columns, rows, views)
-}

src/musicplayer/ui/layout_examples/wait_for_input.gleam

@@ -1,15 +0,0 @@
-import gleam/erlang/process.{type Name}
-
-import musicplayer/input/input
-import musicplayer/input/key.{type Key}
-
-pub fn wait_for_input() {
-  let input_keys_name: Name(Key) = process.new_name("input_keys")
-  let assert Ok(_) = process.register(process.self(), input_keys_name)
-
-  input.new(input_keys_name)
-
-  process.new_selector()
-  |> process.select(process.named_subject(input_keys_name))
-  |> process.selector_receive_forever
-}

src/musicplayer/ui/plot.gleam

@@ -1,85 +0,0 @@
-import gleam/dict.{type Dict}
-import gleam/list
-import gleam/string
-
-pub type Buffer =
-  Dict(#(Int, Int), String)
-
-pub fn flush_buffer(buffer: Buffer, columns: Int, rows: Int) -> String {
-  list.range(1, rows)
-  |> list.map(fn(y) {
-    list.range(1, columns)
-    |> list.map(fn(x) {
-      case dict.get(buffer, #(x, y)) {
-        Ok(char) -> char
-        Error(_) -> " "
-      }
-    })
-    |> string.join("")
-  })
-  |> string.join("\r\n")
-}
-
-pub fn text(buffer: Buffer, text: String, x: Int, y: Int) -> Buffer {
-  text
-  |> string.to_graphemes
-  |> list.index_fold(buffer, fn(acc, char, i) {
-    dict.insert(acc, #(x + i, y), char)
-  })
-}
-
-pub fn box(buffer: Buffer, x: Int, y: Int, width: Int, height: Int) -> Buffer {
-  // TODO move box style to `layout.Style`
-  let box_chars = #("┌", "┐", "└", "┘", "─", "│")
-  let #(tl, tr, bl, br, hor, ver) = box_chars
-
-  case width < 2 || height < 2 {
-    True -> buffer
-    False -> {
-      buffer
-      |> dict.insert(#(x, y), tl)
-      |> dict.insert(#(x + width - 1, y), tr)
-      |> dict.insert(#(x, y + height - 1), bl)
-      |> dict.insert(#(x + width - 1, y + height - 1), br)
-      |> horizontal_line(x + 1, y, width - 2, hor)
-      |> horizontal_line(x + 1, y + height - 1, width - 2, hor)
-      |> vertical_line(x, y + 1, height - 2, ver)
-      |> vertical_line(x + width - 1, y + 1, height - 2, ver)
-    }
-  }
-}
-
-pub fn box_with_heading(
-  buffer: Buffer,
-  x: Int,
-  y: Int,
-  width: Int,
-  height: Int,
-  heading: String,
-) -> Buffer {
-  let heading_margin = 1
-  box(buffer, x, y, width, height)
-  |> text(heading, x + heading_margin, y)
-}
-
-fn horizontal_line(
-  buffer: Buffer,
-  x: Int,
-  y: Int,
-  len: Int,
-  char: String,
-) -> Buffer {
-  list.range(0, len - 1)
-  |> list.fold(buffer, fn(acc, i) { dict.insert(acc, #(x + i, y), char) })
-}
-
-fn vertical_line(
-  buffer: Buffer,
-  x: Int,
-  y: Int,
-  len: Int,
-  char: String,
-) -> Buffer {
-  list.range(0, len - 1)
-  |> list.fold(buffer, fn(acc, i) { dict.insert(acc, #(x, y + i), char) })
-}

src/musicplayer/ui/style.gleam

@@ -1,34 +0,0 @@
-import gleam/option.{type Option}
-
-pub type Dimension {
-  Percent(width: Int, height: Int)
-  // TODO add Flex that flows
-}
-
-pub type Border {
-  BorderNone
-  BorderSingle
-}
-
-pub type Style {
-  Style(dimensions: Dimension, border: Option(Border))
-}
-
-pub type BorderChars {
-  BorderChars(
-    top_left: String,
-    top_right: String,
-    bottom_left: String,
-    bottom_right: String,
-    horisontal: String,
-    vertical: String,
-  )
-}
-
-// https://en.wikipedia.org/wiki/Box-drawing_characters
-pub fn border_chars(border: Border) -> BorderChars {
-  case border {
-    BorderNone -> BorderChars("", "", "", "", "", "")
-    BorderSingle -> BorderChars("┌", "┐", "└", "┘", "─", "│")
-  }
-}

src/musicplayer/ui/ui.gleam

@@ -1,15 +1,14 @@
 import gleam/erlang/process.{type Subject}
 import gleam/int
 import gleam/list
-import gleam/option.{None, Some}
 import gleam/otp/actor
 import gleam/string
+import gleam/string_tree.{type StringTree}
 
 import musicplayer/logging/logging
 import musicplayer/ui/control.{type Control}
 import musicplayer/ui/internal
 import musicplayer/ui/layout.{type Layout}
-import musicplayer/ui/style
 
 pub type State(redraw, content) {
   State(redraw: Subject(Layout), layout: Layout)
@@ -19,69 +18,7 @@ pub fn new() -> Result(Subject(Control), String) {
   let redraw_name = process.new_name("redraw")
   let redraw: Subject(Layout) = process.named_subject(redraw_name)
 
-  let layout =
+  let layout = layout.new()
-    [
-      [
-        #(
-          layout.Header,
-          layout.Row(
-            heading: Some("Foo <1> | Bar (2)"),
-            style: style.Style(
-              dimensions: style.Percent(width: 100, height: 50),
-              border: Some(style.BorderSingle),
-            ),
-            children: [],
-          ),
-        ),
-        #(
-          layout.PlaybackTime,
-          layout.Row(
-            heading: None,
-            style: style.Style(
-              dimensions: style.Percent(width: 100, height: 50),
-              border: Some(style.BorderSingle),
-            ),
-            children: [],
-          ),
-        ),
-      ],
-      [
-        #(
-          layout.Header,
-          layout.Row(
-            heading: Some("Foo (1) | Bar <2>"),
-            style: style.Style(
-              dimensions: style.Percent(width: 100, height: 33),
-              border: Some(style.BorderSingle),
-            ),
-            children: [],
-          ),
-        ),
-        #(
-          layout.Search,
-          layout.Row(
-            heading: None,
-            style: style.Style(
-              dimensions: style.Percent(width: 100, height: 33),
-              border: Some(style.BorderSingle),
-            ),
-            children: [],
-          ),
-        ),
-        #(
-          layout.PlaybackTime,
-          layout.Row(
-            heading: None,
-            style: style.Style(
-              dimensions: style.Percent(width: 100, height: 33),
-              border: Some(style.BorderSingle),
-            ),
-            children: [],
-          ),
-        ),
-      ],
-    ]
-    |> layout.new(0, 0, _)
 
   case
     actor.new(State(redraw, layout))
@@ -115,27 +52,27 @@ fn handle_message(
   control: Control,
 ) -> actor.Next(State(redraw, layout), Control) {
   case control {
-    control.UpdateDimensions(columns, rows) -> {
+    control.UpdateDimensions(width, height) -> {
-      let current_dimensions = #(state.layout.columns, state.layout.rows)
+      let current_dimensions = #(state.layout.width, state.layout.height)
 
-      case #(columns, rows) == current_dimensions {
+      case #(width, height) == current_dimensions {
         True -> actor.continue(state)
         False -> {
-          [columns, rows]
+          [width, height]
           |> list.map(int.to_string)
           |> string.join(" ")
           |> string.append("ui - updating dimensions: ", _)
           |> logging.log
 
-          let layout = layout.update_dimensions(state.layout, columns, rows)
+          let layout = layout.update_dimensions(state.layout, width, height)
 
           process.send(state.redraw, layout)
           actor.continue(State(..state, layout:))
         }
       }
     }
-    control.UpdateHeading(section, heading) -> {
+    control.UpdateState(section, content) -> {
-      let layout = layout.update_section_heading(state.layout, section, heading)
+      let layout = layout.update_section(state.layout, section, content)
 
       actor.send(state.redraw, layout)
       actor.continue(State(..state, layout:))
@@ -146,12 +83,6 @@ fn handle_message(
       process.send(reply_to, Nil)
       actor.stop()
     }
-    control.SetView(view_idx) -> {
-      let layout = layout.update_current_view(state.layout, view_idx)
-
-      actor.send(state.redraw, layout)
-      actor.continue(State(..state, layout:))
-    }
   }
 }
 
@@ -173,3 +104,28 @@ fn update_dimensions_on_interval(ui: Subject(Control), interval_ms: Int) {
   process.sleep(interval_ms)
   update_dimensions_on_interval(ui, interval_ms)
 }
+// fn render_layout(layout: Layout, from: Section) -> Nil {
+//   string_tree.new()
+//   |> render_layout_loop(layout, from, _)
+//   |> string_tree.to_string
+//   |> ui_internal.print
+// }
+
+// fn render_layout_loop(
+//   layout: Layout,
+//   from: Section,
+//   tree: StringTree,
+// ) -> StringTree {
+//   case dict.get(layout.nodes, from) {
+//     Error(_) -> tree
+//     Ok(node) -> {
+//       let acc_after_children =
+//         list.fold(node.children, tree, fn(current_acc, child_id) {
+//           render_layout_loop(layout, child_id, current_acc)
+//         })
+
+//       acc_after_children
+//       |> string_tree.append(ui_internal.chars_at(node.content, node.x, node.y))
+//     }
+//   }
+// }

test/musicplayer/control_test.gleam

@@ -1,7 +1,7 @@
 import gleam/list
 import gleeunit
 
-import musicplayer/control.{type Control, type Mode}
+import musicplayer/control.{type Control}
 import musicplayer/input/key.{type Key, Char}
 
 pub fn main() -> Nil {
@@ -9,24 +9,16 @@ pub fn main() -> Nil {
 }
 
 type TestCase {
-  TestCase(key: Key, mode: Mode, expected: Result(Control, Nil))
+  TestCase(key: Key, expected: Result(Control, Nil))
 }
 
 pub fn control_from_key_test() {
-  let idle_tests = [
+  let test_cases = [
-    TestCase(Char(" "), control.Idle, Ok(control.TogglePlayPause)),
+    TestCase(Char(" "), Ok(control.TogglePlayPause)),
-    TestCase(Char("/"), control.Idle, Ok(control.Search("", True))),
+    TestCase(Char("q"), Ok(control.Exit)),
-    TestCase(Char("q"), control.Idle, Ok(control.Exit)),
   ]
 
-  let search_tests = [
+  list.each(test_cases, fn(tc) {
-    TestCase(Char("a"), control.Searching(""), Ok(control.Search("a", True))),
+    assert tc.expected == control.from_key(tc.key)
-    TestCase(Char("b"), control.Searching("a"), Ok(control.Search("ab", True))),
-  ]
-
-  let test_cases = [idle_tests, search_tests]
-
-  list.each(list.flatten(test_cases), fn(tc) {
-    assert tc.expected == control.from_key(tc.key, tc.mode)
   })
 }

test/musicplayer/ui/layout_test.gleam

@@ -1,130 +1,87 @@
-import gleam/dict
+// import gleam/dict
-import gleam/io
+// import gleam/int
-import gleam/option.{Some}
+// import gleeunit
-import gleam/string
-import gleeunit
-import gleeunit/should
 
-import musicplayer/ui/layout.{RenderContext, Section}
+// import musicplayer/ui/layout.{type Node, Layout, Section}
-import musicplayer/ui/plot
-import musicplayer/ui/style.{Percent, Style}
 
-pub fn main() -> Nil {
+// pub fn main() -> Nil {
-  gleeunit.main()
+//   gleeunit.main()
-}
+// }
 
-pub fn percent_layout_test() {
+// pub fn foo_test() {
-  let views = [
+//   let expected = ""
-    [
-      #(
-        Section("Row1"),
-        layout.Row(
-          heading: Some("row 1"),
-          style: Style(
-            dimensions: Percent(width: 100, height: 50),
-            border: Some(style.BorderSingle),
-          ),
-          children: [
-            Section("A"),
-            Section("B"),
-          ],
-        ),
-      ),
-      #(
-        Section("A"),
-        layout.Cell(
-          heading: Some("cell 1"),
-          style: Style(
-            dimensions: Percent(width: 50, height: 100),
-            border: Some(style.BorderSingle),
-          ),
-        ),
-      ),
-      #(
-        Section("B"),
-        layout.Cell(
-          heading: Some("cell 2"),
-          style: Style(
-            dimensions: Percent(width: 50, height: 100),
-            border: Some(style.BorderSingle),
-          ),
-        ),
-      ),
-      #(
-        Section("Row2"),
-        layout.Row(
-          heading: Some("row 1"),
-          style: Style(
-            dimensions: Percent(width: 100, height: 50),
-            border: Some(style.BorderSingle),
-          ),
-          children: [],
-        ),
-      ),
-    ],
-  ]
 
-  let columns = 80
+//   let layout =
-  let rows = 20
+//     Layout(
-  let layout = layout.new(columns, rows, views)
+//       width: 80,
+//       height: 20,
+//       nodes:,
+//       dict.from_list([
+//         #(
+//           Section("Root"),
+//           Node(
+//             t: Container,
+//             content: "container",
+//             width_percent: 100,
+//             height_percent: 100,
+//             children: [
+//               Section("Row1"),
+//               Section("Row2"),
+//             ],
+//           ),
+//         ),
+//         #(
+//           Section("Row1"),
+//           Node(
+//             t: Row,
+//             content: "row 1",
+//             width_percent: 100,
+//             height_percent: 50,
+//             children: [
+//               Section("A"),
+//               Section("B"),
+//             ],
+//           ),
+//         ),
+//         #(
+//           Section("A"),
+//           Node(
+//             t: Cell,
+//             content: "cell 1",
+//             width_percent: 50,
+//             height_percent: 100,
+//             children: [],
+//           ),
+//         ),
+//         #(
+//           B,
+//           Node(
+//             t: Cell,
+//             content: "cell 2",
+//             width_percent: 50,
+//             height_percent: 100,
+//             children: [],
+//           ),
+//         ),
+//         #(
+//           Section("Row2"),
+//           Node(
+//             t: Row,
+//             content: "row 1",
+//             width_percent: 100,
+//             height_percent: 50,
+//             children: [],
+//           ),
+//         ),
+//       ]),
+//     )
 
-  let expected =
+//   let container_width = int.to_float(layout.width)
-    "
+//   let container_height = int.to_float(layout.height)
-┌──────────────────────────────────────────────────────────────────────────────┐
+//   let container_top_left_x = 1
-│┌row 1───────────────────────────────────────────────────────────────────────┐│
+//   let container_top_left_y = 1
-││┌cell 1──────────────────────────────┐┌cell 2──────────────────────────────┐││
-│││                                    ││                                    │││
-│││                                    ││                                    │││
-│││                                    ││                                    │││
-│││                                    ││                                    │││
-│││                                    ││                                    │││
-││└────────────────────────────────────┘└────────────────────────────────────┘││
-│└────────────────────────────────────────────────────────────────────────────┘│
-│┌row 1───────────────────────────────────────────────────────────────────────┐│
-││                                                                            ││
-││                                                                            ││
-││                                                                            ││
-││                                                                            ││
-││                                                                            ││
-││                                                                            ││
-││                                                                            ││
-│└────────────────────────────────────────────────────────────────────────────┘│
-└──────────────────────────────────────────────────────────────────────────────┘
-"
-    |> string.replace(each: "\n", with: "\r\n")
-    |> string.trim
 
-  let context =
+//   let assert Ok(data) =
-    RenderContext(
+//     layout.render_loop(layout, container_width, container_height)
-      parent_width: layout.columns,
+//   assert data == 123.456789
-      parent_height: layout.rows,
+// }
-      parent_top_left_x: 1,
-      parent_top_left_y: 1,
-      position_index: 0,
-    )
-
-  let assert Ok(view) = dict.get(layout.views, layout.current_view)
-
-  let flushed =
-    layout.render_loop(
-      view,
-      context,
-      Section(string.append("view_", string.inspect(layout.current_view))),
-      dict.new(),
-    )
-    |> plot.flush_buffer(layout.columns, layout.rows)
-
-  case flushed == expected {
-    True -> Nil
-    False -> {
-      io.println("Test failed")
-      io.println("Expected:")
-      io.println(string.trim(expected))
-
-      io.println("Got:")
-      io.println(flushed)
-
-      should.equal(flushed, expected)
-    }
-  }
-}