part 2: Make HTMLEditor::FormatBlockContainerWithTransaction refer …

…the computed style when considering the wrapping part

In bug 1851951, I considered that the method should keep the traditional
behavior for the backward compatibility because of mainly used by handling
a block level command, `formatBlock`, but I think that computing the replacing
part should be considered with the computed style of the elements.  That's
compatible with the other browsers.

Depends on D199844

Differential Revision: https://phabricator.services.mozilla.com/D199845

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1876913
gecko-commit: 505443c66b747ccc1247f4eeb960681204fd2ac7
gecko-reviewers: m_kato

editing/data/formatblock.js

@@ -1886,4 +1886,10 @@ var browserTests = [
     "<div><div contenteditable=\"false\"><div contenteditable=\"\"><div>[foo]</div></div></div></div>", // <div> can have <div>, so, wrap it with <div>
     [true],
     {"formatblock":[false,false,"",false,false,"div"]}],
+
+["<span style=display:block>abc</span><span style=display:block>[def]</span><span style=display:block>ghi</span>",
+    [["formatblock","div"]],
+    "<span style=\"display:block\">abc</span><div><span style=\"display:block\">def</span></div><span style=\"display:block\">ghi</span>",
+    [true],
+    {"formatblock":[false,false,"",false,false,"div"]}],
 ]

editing/data/insertparagraph.js

@@ -2558,4 +2558,19 @@ var browserTests = [
      "foo<br><p><br></p><p>bar<span>baz</span><br>qux</p>"],
     [true,true],
     {}],
+
+// Inserting paragraph before <br> followed by a blocked <span> should cause
+// inserting an empty paragraph to start of the editing host at least.
+["{}<br><span style=display:block>abc<br>def<br></span>",
+    [["defaultparagraphseparator","div"],["insertparagraph",""]],
+    ["<div><br></div><br><span style=\"display:block\">abc<br>def<br></span>",
+     "<div><br></div><div><br></div><span style=\"display:block\">abc<br>def<br></span>"],
+    [true,true],
+    {}],
+["{}<br><span style=display:block>abc<br>def<br></span>",
+    [["defaultparagraphseparator","p"],["insertparagraph",""]],
+    ["<p><br></p><br><span style=\"display:block\">abc<br>def<br></span>",
+     "<p><br></p><p><br></p><span style=\"display:block\">abc<br>def<br></span>"],
+    [true,true],
+    {}],
 ]

editing/run/formatblock.html

@@ -5,7 +5,8 @@
 <meta name="variant" content="?1001-2000">
 <meta name="variant" content="?2001-3000">
 <meta name="variant" content="?3001-4000">
-<meta name="variant" content="?4001-last">
+<meta name="variant" content="?4001-5000">
+<meta name="variant" content="?5001-last">
 <link rel=stylesheet href=../include/reset.css>
 <title>formatblock - HTML editing conformance tests</title>