From ee2276244a514a00d8b817d1fb1c16e3dfdd3dd3 Mon Sep 17 00:00:00 2001
From: Cory Forsyth <cory.forsyth@gmail.com>
Date: Fri, 23 Oct 2015 10:55:42 -0400
Subject: [PATCH] Delete selection before applying paste

fixes #184
---
 src/js/editor/editor.js                    | 21 ++++++++++++++++-----
 tests/acceptance/editor-copy-paste-test.js | 21 +++++++++++++++++++++
 2 files changed, 37 insertions(+), 5 deletions(-)

diff --git a/src/js/editor/editor.js b/src/js/editor/editor.js
index 345753336..08d2d5a7a 100644
--- a/src/js/editor/editor.js
+++ b/src/js/editor/editor.js
@@ -211,13 +211,17 @@ class Editor {
     }
   }
 
-  handleDeletion(event) {
+  /**
+   * @param {KeyEvent} event optional
+   * @private
+   */
+  handleDeletion(event=null) {
     const range = this.cursor.offsets;
 
     if (this.cursor.hasSelection()) {
       this.run(postEditor => postEditor.deleteRange(range));
       this.cursor.moveToPosition(range.head);
-    } else {
+    } else if (event) {
       const key = Key.fromEvent(event);
       const nextPosition = this.run(postEditor => {
         return postEditor.deleteFrom(range.head, key.direction);
@@ -633,24 +637,31 @@ class Editor {
   }
 
   handleCut(event) {
+    event.preventDefault();
+
     this.handleCopy(event);
-    this.handleDeletion(event);
+    this.handleDeletion();
   }
 
   handleCopy(event) {
     event.preventDefault();
+
     setClipboardCopyData(event, this);
   }
 
   handlePaste(event) {
     event.preventDefault();
 
+    const { head: position } = this.cursor.offsets;
+    if (this.cursor.hasSelection()) {
+      this.handleDeletion();
+    }
+
     let pastedPost = parsePostFromPaste(event, this.builder);
 
-    const range = this.cursor.offsets;
     let nextPosition;
     this.run(postEditor => {
-      nextPosition = postEditor.insertPost(range.head, pastedPost);
+      nextPosition = postEditor.insertPost(position, pastedPost);
     });
 
     this.cursor.moveToPosition(nextPosition);
diff --git a/tests/acceptance/editor-copy-paste-test.js b/tests/acceptance/editor-copy-paste-test.js
index ce8485764..9c76881d4 100644
--- a/tests/acceptance/editor-copy-paste-test.js
+++ b/tests/acceptance/editor-copy-paste-test.js
@@ -58,6 +58,27 @@ test('can cut and then paste content', (assert) => {
   assert.hasElement('#editor p:contains(abc)', 'pastes the text');
 });
 
+test('paste when text is selected replaces that text', (assert) => {
+  const mobiledoc = Helpers.mobiledoc.build(
+    ({post, markupSection, marker}) => {
+    return post([markupSection('p', [marker('abc')])]);
+  });
+  editor = new Editor({mobiledoc});
+  editor.render(editorElement);
+
+  assert.hasElement('#editor p:contains(abc)', 'precond - has p');
+
+  Helpers.dom.selectText('bc', editorElement);
+  Helpers.dom.triggerCopyEvent(editor);
+
+  Helpers.dom.selectText('a', editorElement);
+
+  Helpers.dom.triggerPasteEvent(editor);
+
+  assert.hasElement('#editor p:contains(bcbc)',
+                    'pastes, replacing the selection');
+});
+
 test('simple copy-paste with markup at end of section works', (assert) => {
   const mobiledoc = Helpers.mobiledoc.build(
     ({post, markupSection, marker, markup}) => {