From 308a17b6c97ff3052b91eb08bea06a055e95f8b3 Mon Sep 17 00:00:00 2001
From: Alysa <ameng@pinterest.com>
Date: Tue, 23 Jul 2024 10:52:59 -0700
Subject: [PATCH] highlight range

---
 static/application.js |  2 +-
 static/index.html     | 19 ++++++++++++++++---
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/static/application.js b/static/application.js
index a8af5be..d951f92 100644
--- a/static/application.js
+++ b/static/application.js
@@ -49,7 +49,7 @@ haste_document.prototype.load = function(key, callback, lang) {
             highlighted =
               "<span class='lineHighlight'>" + highlighted + "</span>";
           }
-          highlighted = "<span onclick='handleLineClick(" + i + ")' class='line' id='line-" + i + "'>" + highlighted + "</span>";
+          highlighted = "<span onclick='handleLineClick(event," + i + ")' class='line' id='line-" + i + "'>" + highlighted + "</span>";
           high.value += highlighted + "\n";
         }
         // scroll to position in document after ensuring components h"ve had time to render
diff --git a/static/index.html b/static/index.html
index 6bfea97..59988bb 100644
--- a/static/index.html
+++ b/static/index.html
@@ -67,9 +67,22 @@
 			handlePop({ target: window });
 		});
 
-		function handleLineClick(lineId) {
-			/* TODO */
-			window.location.hash = "#L" + (lineId + 1);
+		function handleLineClick(event, lineId) {
+			var lineNumber = lineId + 1;
+			if (event.shiftKey && app.selectedLines.startLine != undefined && lineNumber != app.selectedLines.startLine) {
+				if (lineNumber > app.selectedLines.startLine) {
+					app.selectedLines.endLine = lineNumber;
+				} else {
+					app.selectedLines.endLine = this.app.selectedLines.startLine;
+					app.selectedLines.startLine = lineNumber;
+				}
+				window.location.hash = "#L" + (app.selectedLines.startLine) + "-L" + (app.selectedLines.endLine);
+			} else {
+				// no shift range to consider
+				app.selectedLines.startLine = lineNumber;
+				app.selectedLines.endLine = lineNumber;
+				window.location.hash = "#L" + (lineNumber);
+			}
 		}
 	</script>