editor: fix paste to plain text

Previously copy or cutting text on line and pasting it will generate
<span> inside the line.

This commit fix the paste function to paste only text.

1 files changed, 9 insertions, 0 deletions

diff --git a/editor/editor.ts b/editor/editor.ts
index b428e87..880ef93 100644
--- a/editor/editor.ts
+++ b/editor/editor.ts
@@ -307,6 +307,15 @@ class EditorLine {
 			return ed.onKeydownText(x, this.elText, ev)
 		}
 
+		this.elText.addEventListener("paste", (ev: ClipboardEvent) => {
+			if (!ev.clipboardData) {
+				return
+			}
+			ev.preventDefault()
+			const text = ev.clipboardData.getData("text/plain")
+			document.execCommand("insertHTML", false, text)
+		})
+
 		this.el.appendChild(this.elNumber)
 		this.el.appendChild(this.elText)
 	}