From e39c4a6ee51ebe007886ec6f12bfb5ee39353c15 Mon Sep 17 00:00:00 2001
From: Steve Eberhardt <9057412+melchiar@users.noreply.github.com>
Date: Fri, 5 Apr 2019 03:11:42 -0700
Subject: [PATCH] added disableStyleCopyPaste property (#5590)

---
 HEADER.js                              | 9 +++++++++
 src/mixins/itext_key_behavior.mixin.js | 9 +++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/HEADER.js b/HEADER.js
index 0b580a5eff4..be80d5069a2 100644
--- a/HEADER.js
+++ b/HEADER.js
@@ -114,6 +114,15 @@ fabric.charWidthsCache = { };
  */
 fabric.textureSize = 2048;
 
+/**
+ * When 'true', style information is not retained when copy/pasting text, making
+ * pasted text use destination style.
+ * Defaults to 'false'.
+ * @type Boolean
+ * @default
+ */
+fabric.disableStyleCopyPaste = false;
+
 /**
  * Enable webgl for filtering picture is available
  * A filtering backend will be initialized, this will both take memory and
diff --git a/src/mixins/itext_key_behavior.mixin.js b/src/mixins/itext_key_behavior.mixin.js
index 0c59a410760..ed0f4e7c5fb 100644
--- a/src/mixins/itext_key_behavior.mixin.js
+++ b/src/mixins/itext_key_behavior.mixin.js
@@ -191,7 +191,7 @@ fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.protot
       }
     }
     if (insertedText.length) {
-      if (fromPaste && insertedText.join('') === fabric.copiedText) {
+      if (fromPaste && insertedText.join('') === fabric.copiedText && !fabric.disableStyleCopyPaste) {
         this.insertNewStyleBlock(insertedText, this.selectionStart, fabric.copiedTextStyle);
       }
       else {
@@ -239,7 +239,12 @@ fabric.util.object.extend(fabric.IText.prototype, /** @lends fabric.IText.protot
     }
 
     fabric.copiedText = this.getSelectedText();
-    fabric.copiedTextStyle = this.getSelectionStyles(this.selectionStart, this.selectionEnd, true);
+    if (!fabric.disableStyleCopyPaste) {
+      fabric.copiedTextStyle = this.getSelectionStyles(this.selectionStart, this.selectionEnd, true);
+    }
+    else {
+      fabric.copiedTextStyle = null;
+    }
     this._copyDone = true;
   },