From 02faedf9bf7e826bc78161f8cf07ffca5d2dbe57 Mon Sep 17 00:00:00 2001
From: pommicket <pommicket@gmail.com>
Date: Sat, 31 Dec 2022 11:54:06 -0500
Subject: highlight-enabled and highlight-auto settings

---
 config.c         |  2 ++
 ide-highlights.c | 27 +++++++++++++++++++--------
 main.c           |  3 ++-
 ted.c            |  3 +++
 ted.cfg          |  4 ++++
 ted.h            |  2 ++
 6 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/config.c b/config.c
index 070f440..ddfc8ad 100644
--- a/config.c
+++ b/config.c
@@ -263,6 +263,8 @@ static OptionBool const options_bool[] = {
 	{"lsp-enabled", &options_zero.lsp_enabled, true},
 	{"hover-enabled", &options_zero.hover_enabled, true},
 	{"vsync", &options_zero.vsync, false},
+	{"highlight-enabled", &options_zero.highlight_enabled, true},
+	{"highlight-auto", &options_zero.highlight_auto, true},
 };
 static OptionU8 const options_u8[] = {
 	{"tab-width", &options_zero.tab_width, 1, 100, true},
diff --git a/ide-highlights.c b/ide-highlights.c
index 8ecf3ea..f53fb19 100644
--- a/ide-highlights.c
+++ b/ide-highlights.c
@@ -1,30 +1,33 @@
-static void highlights_clear(Highlights *hls) {
+void highlights_close(Ted *ted) {
+	Highlights *hls = &ted->highlights;
 	arr_clear(hls->highlights);
+	ted_cancel_lsp_request(ted, hls->last_request_lsp, hls->last_request_id);
+	hls->last_request_id = 0;
+	hls->requested_position = (LSPDocumentPosition){0};
 }
 
 void highlights_send_request(Ted *ted) {
 	TextBuffer *buffer = ted->active_buffer;
 	Highlights *hls = &ted->highlights;
 	if (!buffer) {
-		highlights_clear(hls);
+		highlights_close(ted);
 		return;
 	}
 	LSP *lsp = buffer_lsp(buffer);
 	if (!lsp) {
-		highlights_clear(hls);
+		highlights_close(ted);
 		return;
 	}
 	LSPDocumentPosition pos = buffer_cursor_pos_as_lsp_document_position(buffer);
 	LSPRequest request = {.type = LSP_REQUEST_HIGHLIGHT};
 	request.data.highlight.position = pos;
+	
+	ted_cancel_lsp_request(ted, hls->last_request_lsp, hls->last_request_id);
 	hls->last_request_id = lsp_send_request(lsp, &request);
 	hls->last_request_lsp = lsp->id;
 	hls->requested_position = pos;
 }
 
-void highlights_close(Ted *ted) {
-	highlights_clear(&ted->highlights);
-}
 
 void highlights_process_lsp_response(Ted *ted, LSPResponse *response) {
 	Highlights *hls = &ted->highlights;
@@ -43,13 +46,21 @@ void highlights_frame(Ted *ted) {
 	Highlights *hls = &ted->highlights;
 	TextBuffer *buffer = ted->active_buffer;
 	if (!buffer) {
-		highlights_clear(hls);
+		highlights_close(ted);
+		return;
+	}
+	const Settings *settings = buffer_settings(buffer);
+	bool ctrl_down = SDL_GetKeyboardState(NULL)[SDL_SCANCODE_LCTRL]
+		|| SDL_GetKeyboardState(NULL)[SDL_SCANCODE_RCTRL];
+	if (!settings->highlight_enabled
+		|| (!settings->highlight_auto && !ctrl_down)) {
+		highlights_close(ted);
 		return;
 	}
+	
 	LSPDocumentPosition pos = buffer_cursor_pos_as_lsp_document_position(buffer);
 	if (!lsp_document_position_eq(pos, hls->requested_position)) {
 		// cursor moved or something. let's resend the request.
-		highlights_clear(hls);
 		highlights_send_request(ted);
 	}
 	
diff --git a/main.c b/main.c
index 5a86677..335f48b 100644
--- a/main.c
+++ b/main.c
@@ -1,7 +1,8 @@
 /*
 @TODO:
+- use ted_cancel_request more
 - show line containing usage
-- highlight-enabled, and highlight-auto
+- hover-auto
 - handle multiple symbols with same name in go-to-definition menu
 - :go-to-cursor-definition
 - test full unicode position handling
diff --git a/ted.c b/ted.c
index 3868a29..987a753 100644
--- a/ted.c
+++ b/ted.c
@@ -568,3 +568,6 @@ void ted_go_to_lsp_document_position(Ted *ted, LSP *lsp, LSPDocumentPosition pos
 	ted_go_to_position(ted, path, line, character, true);
 }
 
+void ted_cancel_lsp_request(Ted *ted, LSPID lsp, LSPRequestID request) {
+	lsp_cancel_request(ted_get_lsp_by_id(ted, lsp), request);
+}
diff --git a/ted.cfg b/ted.cfg
index 52978cf..dcf926b 100644
--- a/ted.cfg
+++ b/ted.cfg
@@ -41,6 +41,10 @@ lsp-enabled = yes
 signature-help-enabled = yes
 # display hover info when shift key is pressed? (only with LSP running)
 hover-enabled = yes
+# highlight instances of the variable under the cursor when the ctrl key is pressed? (only with LSP running)
+highlight-enabled = yes
+# don't require ctrl key for highlighting
+highlight-auto = no
 # maximum editable file size.
 # ted will set the buffer to view-only if a file larger than this is loaded.
 # NOTE: ted is not really meant for absolutely massive files.
diff --git a/ted.h b/ted.h
index 9201a89..56185fc 100644
--- a/ted.h
+++ b/ted.h
@@ -158,6 +158,8 @@ typedef struct {
 	bool signature_help_enabled;
 	bool lsp_enabled;
 	bool hover_enabled;
+	bool highlight_enabled;
+	bool highlight_auto;
 	bool vsync;
 	u8 tab_width;
 	u8 cursor_width;
-- 
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