feat(cli): add custom header for input field (#472)

#362 

Add a custom header and the cli flag for the input field.

Maybe I should replace channel name with header name in the draw method
instead of checking in the draw loop whether the header is there or
not...

Co-authored-by: Alexandre Pasmantier <47638216+alexpasmantier@users.noreply.github.com>

television/cli/args.rs

@@ -74,6 +74,14 @@ pub struct Cli {
     #[arg(short, long, value_name = "STRING", verbatim_doc_comment)]
     pub input: Option<String>,
 
+    /// Input fields header title
+    ///
+    /// This can be used to give the input field a custom title e.g. the current
+    /// working directory.
+    /// The default value for the input header is the current channel.
+    #[arg(long, value_name = "STRING", verbatim_doc_comment)]
+    pub custom_header: Option<String>,
+
     /// The working directory to start the application in.
     ///
     /// This can be used to specify a different working directory for the

television/cli/mod.rs

@@ -26,6 +26,7 @@ pub struct PostProcessedCli {
     pub tick_rate: Option<f64>,
     pub frame_rate: Option<f64>,
     pub input: Option<String>,
+    pub custom_header: Option<String>,
     pub command: Option<Command>,
     pub working_directory: Option<String>,
     pub autocomplete_prompt: Option<String>,
@@ -44,6 +45,7 @@ impl Default for PostProcessedCli {
             tick_rate: None,
             frame_rate: None,
             input: None,
+            custom_header: None,
             command: None,
             working_directory: None,
             autocomplete_prompt: None,
@@ -111,6 +113,7 @@ impl From<Cli> for PostProcessedCli {
             tick_rate: cli.tick_rate,
             frame_rate: cli.frame_rate,
             input: cli.input,
+            custom_header: cli.custom_header,
             command: cli.command,
             working_directory,
             autocomplete_prompt: cli.autocomplete_prompt,

television/config/ui.rs

@@ -17,6 +17,7 @@ pub struct UiConfig {
     pub input_bar_position: InputPosition,
     pub preview_title_position: Option<PreviewTitlePosition>,
     pub theme: String,
+    pub custom_header: Option<String>,
 }
 
 impl Default for UiConfig {
@@ -29,6 +30,7 @@ impl Default for UiConfig {
             input_bar_position: InputPosition::Top,
             preview_title_position: None,
             theme: String::from(DEFAULT_THEME),
+            custom_header: None,
         }
     }
 }

television/draw.rs

@@ -239,6 +239,7 @@ pub fn draw(ctx: &Ctx, f: &mut Frame<'_>, area: Rect) -> Result<Layout> {
         &ctx.tv_state.channel_state.current_channel_name,
         &ctx.tv_state.spinner,
         &ctx.colorscheme,
+        &ctx.config.ui.custom_header,
     )?;
 
     if layout.preview_window.is_some() {

television/main.rs

@@ -101,6 +101,9 @@ fn apply_cli_overrides(args: &PostProcessedCli, config: &mut Config) {
         config.keybindings =
             merge_keybindings(config.keybindings.clone(), keybindings);
     }
+    if let Some(header) = &args.custom_header {
+        config.ui.custom_header = Some(header.to_string());
+    }
 }
 
 pub fn set_current_dir(path: &String) -> Result<()> {

television/screen/input.rs

@@ -24,13 +24,15 @@ pub fn draw_input_box(
     channel_name: &str,
     spinner: &Spinner,
     colorscheme: &Colorscheme,
+    custom_header: &Option<String>,
 ) -> Result<()> {
+    let header = custom_header.as_deref().unwrap_or(channel_name);
     let input_block = Block::default()
         .borders(Borders::ALL)
         .border_type(BorderType::Rounded)
         .border_style(Style::default().fg(colorscheme.general.border_fg))
         .title_top(
-            Line::from(String::from(" ") + channel_name + " ")
+            Line::from(String::from(" ") + header + " ")
                 .style(Style::default().fg(colorscheme.mode.channel).bold())
                 .centered(),
         )