1 files changed, 103 insertions, 6 deletions

diff --git a/toolkit/components/pdfjs/content/build/pdf.js b/toolkit/components/pdfjs/content/build/pdf.js
index f59bc41651..017a45914e 100644
--- a/toolkit/components/pdfjs/content/build/pdf.js
+++ b/toolkit/components/pdfjs/content/build/pdf.js
@@ -9375,11 +9375,13 @@ exports.FreeTextEditor = void 0;
 var _util = __w_pdfjs_require__(1);
 var _tools = __w_pdfjs_require__(5);
 var _editor = __w_pdfjs_require__(4);
+const EOL_PATTERN = /\r\n?|\n/g;
 class FreeTextEditor extends _editor.AnnotationEditor {
   #boundEditorDivBlur = this.editorDivBlur.bind(this);
   #boundEditorDivFocus = this.editorDivFocus.bind(this);
   #boundEditorDivInput = this.editorDivInput.bind(this);
   #boundEditorDivKeydown = this.editorDivKeydown.bind(this);
+  #boundEditorDivPaste = this.editorDivPaste.bind(this);
   #color;
   #content = "";
   #editorDivId = `${this.id}-editor`;
@@ -9495,6 +9497,7 @@ class FreeTextEditor extends _editor.AnnotationEditor {
     this.editorDiv.addEventListener("focus", this.#boundEditorDivFocus);
     this.editorDiv.addEventListener("blur", this.#boundEditorDivBlur);
     this.editorDiv.addEventListener("input", this.#boundEditorDivInput);
+    this.editorDiv.addEventListener("paste", this.#boundEditorDivPaste);
   }
   disableEditMode() {
     if (!this.isInEditMode()) {
@@ -9510,6 +9513,7 @@ class FreeTextEditor extends _editor.AnnotationEditor {
     this.editorDiv.removeEventListener("focus", this.#boundEditorDivFocus);
     this.editorDiv.removeEventListener("blur", this.#boundEditorDivBlur);
     this.editorDiv.removeEventListener("input", this.#boundEditorDivInput);
+    this.editorDiv.removeEventListener("paste", this.#boundEditorDivPaste);
     this.div.focus({
       preventScroll: true
     });
@@ -9539,13 +9543,10 @@ class FreeTextEditor extends _editor.AnnotationEditor {
     super.remove();
   }
   #extractText() {
-    const divs = this.editorDiv.getElementsByTagName("div");
-    if (divs.length === 0) {
-      return this.editorDiv.innerText;
-    }
     const buffer = [];
-    for (const div of divs) {
-      buffer.push(div.innerText.replace(/\r\n?|\n/, ""));
+    this.editorDiv.normalize();
+    for (const child of this.editorDiv.childNodes) {
+      buffer.push(FreeTextEditor.#getNodeContent(child));
     }
     return buffer.join("\n");
   }
@@ -9658,6 +9659,102 @@ class FreeTextEditor extends _editor.AnnotationEditor {
     }
     return this.div;
   }
+  static #getNodeContent(node) {
+    return (node.nodeType === Node.TEXT_NODE ? node.nodeValue : node.innerText).replaceAll(EOL_PATTERN, "");
+  }
+  editorDivPaste(event) {
+    const clipboardData = event.clipboardData || window.clipboardData;
+    const {
+      types
+    } = clipboardData;
+    if (types.length === 1 && types[0] === "text/plain") {
+      return;
+    }
+    event.preventDefault();
+    const paste = FreeTextEditor.#deserializeContent(clipboardData.getData("text") || "").replaceAll(EOL_PATTERN, "\n");
+    if (!paste) {
+      return;
+    }
+    const selection = window.getSelection();
+    if (!selection.rangeCount) {
+      return;
+    }
+    this.editorDiv.normalize();
+    selection.deleteFromDocument();
+    const range = selection.getRangeAt(0);
+    if (!paste.includes("\n")) {
+      range.insertNode(document.createTextNode(paste));
+      this.editorDiv.normalize();
+      selection.collapseToStart();
+      return;
+    }
+    const {
+      startContainer,
+      startOffset
+    } = range;
+    const bufferBefore = [];
+    const bufferAfter = [];
+    if (startContainer.nodeType === Node.TEXT_NODE) {
+      const parent = startContainer.parentElement;
+      bufferAfter.push(startContainer.nodeValue.slice(startOffset).replaceAll(EOL_PATTERN, ""));
+      if (parent !== this.editorDiv) {
+        let buffer = bufferBefore;
+        for (const child of this.editorDiv.childNodes) {
+          if (child === parent) {
+            buffer = bufferAfter;
+            continue;
+          }
+          buffer.push(FreeTextEditor.#getNodeContent(child));
+        }
+      }
+      bufferBefore.push(startContainer.nodeValue.slice(0, startOffset).replaceAll(EOL_PATTERN, ""));
+    } else if (startContainer === this.editorDiv) {
+      let buffer = bufferBefore;
+      let i = 0;
+      for (const child of this.editorDiv.childNodes) {
+        if (i++ === startOffset) {
+          buffer = bufferAfter;
+        }
+        buffer.push(FreeTextEditor.#getNodeContent(child));
+      }
+    }
+    this.#content = `${bufferBefore.join("\n")}${paste}${bufferAfter.join("\n")}`;
+    this.#setContent();
+    const newRange = new Range();
+    let beforeLength = bufferBefore.reduce((acc, line) => acc + line.length, 0);
+    for (const {
+      firstChild
+    } of this.editorDiv.childNodes) {
+      if (firstChild.nodeType === Node.TEXT_NODE) {
+        const length = firstChild.nodeValue.length;
+        if (beforeLength <= length) {
+          newRange.setStart(firstChild, beforeLength);
+          newRange.setEnd(firstChild, beforeLength);
+          break;
+        }
+        beforeLength -= length;
+      }
+    }
+    selection.removeAllRanges();
+    selection.addRange(newRange);
+  }
+  #setContent() {
+    this.editorDiv.replaceChildren();
+    if (!this.#content) {
+      return;
+    }
+    for (const line of this.#content.split("\n")) {
+      const div = document.createElement("div");
+      div.append(line ? document.createTextNode(line) : document.createElement("br"));
+      this.editorDiv.append(div);
+    }
+  }
+  #serializeContent() {
+    return this.#content.replaceAll("\xa0", " ");
+  }
+  static #deserializeContent(content) {
+    return content.replaceAll(" ", "\xa0");
+  }
   get contentDiv() {
     return this.editorDiv;
   }