From 1450ec8733916e442a1bf46d99b9042bc961031b Mon Sep 17 00:00:00 2001
From: Nikita Revenco <154856872+NikitaRevenco@users.noreply.github.com>
Date: Fri, 6 Dec 2024 21:02:09 +0000
Subject: [PATCH] feat: add new `hover_dump` command

---
 helix-term/src/commands.rs       |  1 +
 helix-term/src/commands/lsp.rs   | 61 +++++++++++++++++++++++++++++++-
 helix-term/src/keymap/default.rs |  1 +
 helix-view/src/editor.rs         |  2 +-
 4 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 23d2b246d..4131a65d3 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -496,6 +496,7 @@ impl MappableCommand {
         remove_primary_selection, "Remove primary selection",
         completion, "Invoke completion popup",
         hover, "Show docs for item under cursor",
+        hover_dump, "Show docs for item under cursor in a new buffer",
         toggle_comments, "Comment/uncomment selections",
         toggle_line_comments, "Line comment/uncomment selections",
         toggle_block_comments, "Block comment/uncomment selections",
diff --git a/helix-term/src/commands/lsp.rs b/helix-term/src/commands/lsp.rs
index 130428d4d..2b6cf124a 100644
--- a/helix-term/src/commands/lsp.rs
+++ b/helix-term/src/commands/lsp.rs
@@ -14,7 +14,7 @@ use tui::{text::Span, widgets::Row};
 use super::{align_view, push_jump, Align, Context, Editor};
 
 use helix_core::{
-    syntax::LanguageServerFeature, text_annotations::InlineAnnotation, Selection, Uri,
+    syntax::LanguageServerFeature, text_annotations::InlineAnnotation, Rope, Selection, Uri,
 };
 use helix_stdx::path;
 use helix_view::{
@@ -1036,9 +1036,16 @@ pub fn signature_help(cx: &mut Context) {
         .trigger_signature_help(SignatureHelpInvoked::Manual, cx.editor)
 }
 
+// <<<<a<<< HEAD
 pub fn hover(cx: &mut Context) {
     use ui::lsp::hover::Hover;
 
+    // ===a====
+    // pub fn hover_impl<T>(cx: &mut Context, callback: T)
+    // where
+    //     T: FnOnce(String, &mut Editor, &mut Compositor) + std::marker::Send + 'static,
+    // {
+    // >>>>a>>> 0e043a81 (feat: add new `hover_dump` command)
     let (view, doc) = current!(cx.editor);
     if doc
         .language_servers_with_feature(LanguageServerFeature::Hover)
@@ -1062,10 +1069,43 @@ pub fn hover(cx: &mut Context) {
                 .text_document_hover(doc.identifier(), pos, None)
                 .unwrap();
 
+            // <<<<<<< HEAD
             async move {
                 let json = request.await?;
                 let response = serde_json::from_value::<Option<lsp::Hover>>(json)?;
                 anyhow::Ok((server_name, response))
+                // =======
+                //     cx.callback(
+                //         future,
+                //         move |editor, compositor, response: Option<lsp::Hover>| {
+                //             if let Some(hover) = response {
+                //                 // hover.contents / .range <- used for visualizing
+
+                //                 fn marked_string_to_markdown(contents: lsp::MarkedString) -> String {
+                //                     match contents {
+                //                         lsp::MarkedString::String(contents) => contents,
+                //                         lsp::MarkedString::LanguageString(string) => {
+                //                             if string.language == "markdown" {
+                //                                 string.value
+                //                             } else {
+                //                                 format!("```{}\n{}\n```", string.language, string.value)
+                //                             }
+                //                         }
+                //                     }
+                //                 }
+
+                //                 let contents = match hover.contents {
+                //                     lsp::HoverContents::Scalar(contents) => marked_string_to_markdown(contents),
+                //                     lsp::HoverContents::Array(contents) => contents
+                //                         .into_iter()
+                //                         .map(marked_string_to_markdown)
+                //                         .collect::<Vec<_>>()
+                //                         .join("\n\n"),
+                //                     lsp::HoverContents::Markup(contents) => contents.value,
+                //                 };
+
+                //                 callback(contents, editor, compositor);
+                // >>>>>>> 0e043a81 (feat: add new `hover_dump` command)
             }
         })
         .collect();
@@ -1094,6 +1134,25 @@ pub fn hover(cx: &mut Context) {
     });
 }
 
+pub fn hover_dump(cx: &mut Context) {
+    hover_impl(cx, |contents, editor, _compositor| {
+        editor.new_file_from_document(
+            Action::VerticalSplit,
+            Document::from(Rope::from(contents), None, editor.config.clone()),
+        );
+        let (_view, doc) = current!(editor);
+        if let Ok(_) = doc.set_language_by_language_id("markdown", editor.syn_loader.clone()) {};
+    })
+}
+
+pub fn hover(cx: &mut Context) {
+    hover_impl(cx, |contents, editor, compositor| {
+        let contents = ui::Markdown::new(contents, editor.syn_loader.clone());
+        let popup = Popup::new("hover", contents).auto_close(true);
+        compositor.replace_or_push("hover", popup);
+    })
+}
+
 pub fn rename_symbol(cx: &mut Context) {
     fn get_prefill_from_word_boundary(editor: &Editor) -> String {
         let (view, doc) = current_ref!(editor);
diff --git a/helix-term/src/keymap/default.rs b/helix-term/src/keymap/default.rs
index e160b2246..af9bb2329 100644
--- a/helix-term/src/keymap/default.rs
+++ b/helix-term/src/keymap/default.rs
@@ -283,6 +283,7 @@ pub fn default() -> HashMap<Mode, KeyTrie> {
             "R" => replace_selections_with_clipboard,
             "/" => global_search,
             "k" => hover,
+            "K" => hover_dump,
             "r" => rename_symbol,
             "h" => select_references_to_symbol_under_cursor,
             "c" => toggle_comments,
diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index 00fe719d9..249862073 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -1708,7 +1708,7 @@ impl Editor {
         id
     }
 
-    fn new_file_from_document(&mut self, action: Action, doc: Document) -> DocumentId {
+    pub fn new_file_from_document(&mut self, action: Action, doc: Document) -> DocumentId {
         let id = self.new_document(doc);
         self.switch(id, action);
         id