Revert "fix: Resolve all different copy paste issues once and for all (#3443)"

This reverts commit 26eafd96dd.

webview-ui/src/components/chat/ChatView.tsx

@@ -146,62 +146,17 @@ const ChatView = ({ isHidden, showAnnouncement, hideAnnouncement, showHistoryVie
 			if (window.getSelection) {
 				const selection = window.getSelection()
 				if (selection && selection.rangeCount > 0) {
+					// Get the selected HTML content
 					const range = selection.getRangeAt(0)
-					const commonAncestor = range.commonAncestorContainer
-					let textToCopy: string | null = null
+					const clonedSelection = range.cloneContents()
+					const div = document.createElement("div")
+					div.appendChild(clonedSelection)
+					const selectedHtml = div.innerHTML
 
-					// Check if the selection is inside an element where plain text copy is preferred
-					let currentElement =
-						commonAncestor.nodeType === Node.ELEMENT_NODE
-							? (commonAncestor as HTMLElement)
-							: commonAncestor.parentElement
-					let preferPlainTextCopy = false
-					while (currentElement) {
-						if (currentElement.tagName === "PRE" && currentElement.querySelector("code")) {
-							preferPlainTextCopy = true
-							break
-						}
-						// Check computed white-space style
-						const computedStyle = window.getComputedStyle(currentElement)
-						if (
-							computedStyle.whiteSpace === "pre" ||
-							computedStyle.whiteSpace === "pre-wrap" ||
-							computedStyle.whiteSpace === "pre-line"
-						) {
-							// If the element itself or an ancestor has pre-like white-space,
-							// and the selection is likely contained within it, prefer plain text.
-							// This helps with elements like the TaskHeader's text display.
-							preferPlainTextCopy = true
-							break
-						}
-
-						// Stop searching if we reach a known chat message boundary or body
-						if (
-							currentElement.classList.contains("chat-row-assistant-message-container") ||
-							currentElement.classList.contains("chat-row-user-message-container") ||
-							currentElement.tagName === "BODY"
-						) {
-							break
-						}
-						currentElement = currentElement.parentElement
-					}
-
-					if (preferPlainTextCopy) {
-						// For code blocks or elements with pre-formatted white-space, get plain text.
-						textToCopy = selection.toString()
-					} else {
-						// For other content, use the existing HTML-to-Markdown conversion
-						const clonedSelection = range.cloneContents()
-						const div = document.createElement("div")
-						div.appendChild(clonedSelection)
-						const selectedHtml = div.innerHTML
-						textToCopy = await convertHtmlToMarkdown(selectedHtml)
-					}
-
-					if (textToCopy !== null) {
-						vscode.postMessage({ type: "copyToClipboard", text: textToCopy })
-						e.preventDefault()
-					}
+					// Convert HTML to Markdown
+					const markdown = await convertHtmlToMarkdown(selectedHtml)
+					vscode.postMessage({ type: "copyToClipboard", text: markdown })
+					e.preventDefault()
 				}
 			}
 		}