dap: Move template selection into a picker

It's time to move all these components out of ui/editor.rs

helix-term/src/commands/dap.rs

@@ -3,7 +3,7 @@
     commands,
     compositor::Compositor,
     job::Callback,
-    ui::{FilePicker, Prompt, PromptEvent},
+    ui::{FilePicker, Picker, Prompt, PromptEvent},
 };
 use helix_core::{
     syntax::{DebugArgumentValue, DebugConfigCompletion},
@@ -319,14 +319,16 @@ pub fn dap_launch(cx: &mut Context) {
         }
     };
 
-    cx.editor.debug_config_picker = Some(config.templates.iter().map(|t| t.name.clone()).collect());
-    cx.editor.debug_config_completions = Some(
-        config
-            .templates
-            .iter()
-            .map(|t| t.completion.clone())
-            .collect(),
-    );
+    cx.push_layer(Box::new(Picker::new(
+        true,
+        config.templates.clone(),
+        |template| template.name.as_str().into(),
+        |editor, template, _action| {
+            let completions = template.completion.clone();
+            editor.debug_config_completions = completions;
+            // TODO: need some way to manipulate the compositor to push a new prompt here
+        },
+    ))); // TODO: wrap in popup with fixed size
 }
 
 pub fn dap_toggle_breakpoint(cx: &mut Context) {

helix-term/src/ui/editor.rs

@@ -902,29 +902,11 @@ fn handle_keymap_event(
         cxt: &mut commands::Context,
         event: KeyEvent,
     ) -> Option<KeymapResult> {
-        if let Some(picker) = cxt.editor.debug_config_picker.clone() {
-            match event {
-                KeyEvent {
-                    code: KeyCode::Esc, ..
-                } => {}
-                KeyEvent {
-                    code: KeyCode::Char(char),
-                    ..
-                } => {
-                    let (i, name) = match picker.iter().position(|t| t.starts_with(char)) {
-                        Some(pos) => (pos, picker.get(pos).unwrap().clone()),
-                        None => return None,
-                    };
-                    let completions = cxt.editor.debug_config_completions.clone().unwrap();
-                    let completion = completions.get(i).unwrap().clone();
-                    if !completion.is_empty() {
-                        let prompt = Self::debug_parameter_prompt(completion, name, Vec::new());
-                        cxt.push_layer(Box::new(prompt));
-                    }
-                }
-                _ => return None,
-            }
-            cxt.editor.debug_config_picker = None;
+        if !cxt.editor.debug_config_completions.is_empty() {
+            let completions = std::mem::take(&mut cxt.editor.debug_config_completions);
+            // TODO name
+            let prompt = Self::debug_parameter_prompt(completions, "test".to_string(), Vec::new());
+            cxt.push_layer(Box::new(prompt));
             return None;
         }
 
@@ -1429,26 +1411,6 @@ fn render(&mut self, area: Rect, surface: &mut Surface, cx: &mut Context) {
             info.render(area, surface, cx);
         }
 
-        if let Some(ref configs) = cx.editor.debug_config_picker {
-            let mut text = String::new();
-            let mut height = 0;
-            let mut max_len = 20;
-
-            for line in configs {
-                max_len = max_len.max(line.len() as u16 + 2);
-                height += 1;
-                text.push_str(&format!("{} {}\n", line.chars().next().unwrap(), line));
-            }
-
-            let mut info = Info {
-                height: 20.min(height + 1),
-                width: 70.min(max_len),
-                title: "Debug targets".to_owned(),
-                text: text + "Exit Esc",
-            };
-            info.render(area, surface, cx);
-        }
-
         if cx.editor.config.auto_info {
             if let Some(ref mut info) = self.autoinfo {
                 info.render(area, surface, cx);

helix-view/src/editor.rs

@@ -126,8 +126,7 @@ pub struct Editor {
     pub debugger: Option<dap::Client>,
     pub debugger_events: SelectAll<UnboundedReceiverStream<dap::Payload>>,
     pub breakpoints: HashMap<PathBuf, Vec<dap::SourceBreakpoint>>,
-    pub debug_config_picker: Option<Vec<String>>,
-    pub debug_config_completions: Option<Vec<Vec<DebugConfigCompletion>>>,
+    pub debug_config_completions: Vec<DebugConfigCompletion>,
     pub variables: Option<Vec<String>>,
     pub variables_page: usize,
 
@@ -175,8 +174,7 @@ pub fn new(
             debugger: None,
             debugger_events: SelectAll::new(),
             breakpoints: HashMap::new(),
-            debug_config_picker: None,
-            debug_config_completions: None,
+            debug_config_completions: Vec::new(),
             variables: None,
             variables_page: 0,
             syn_loader: config_loader,