[IE] Paragraph styling is not preserved after pasting (using Ctrl+V or Paste dialog)

[peter]

Reproduce the issue:

1. Open CKEditor and type in some word.
2. Click on Align Center
3. Select all and cut by using CTRL+A and CTRL+X .
4. Refresh the browser.

Version 1:

1. Click on paste icon.
2. In Paste Dialog CTRL+V and press OK.

Version 2:

1. Press CTRL+V.

Expected results:

The style - align center should be applied (preserved) after pasting in the editor body through in both variants of the TC. The cut word from step 3 should be displayed in the center of the editor body. Note! In the Paste dialog the style appears to be correct, when transferring it to the editor body is lost.

Actual result:

The cut word from step 3 is displayed at the left on the editor body.

It is happen also with indentation.

issue occurs only in Internet Explorer .

DUP: #10550.

[peter]

Its happen with language directions as well.

[peter]

The same issue appears when you cut and paste directly into editor body.

Reproduce the issue:

1. Open Ajax sample type in some word and apply styling by pressing relevant icon.

Styling : Alignment, indentation and language direction

2. Select all and cut (CTRL+A & CTRL+X)
3. Paste (CTRL+V)

Expected result: The style applied should be preserved after cut and paste.

Actual result: The style is lost.

[Jakub Ś]

I was able to reproduce this problem from CKEditor 4.0 beta (works fine in CKE 3.6.6) in IE8-10.

Please note that this is happening with one paragraph or header only. If you paste more paragraphs, header and paragraph or more headers, problem doesn't occur.

NOTE: When you copy/paste header like that not only e.g. alignment is lost but also H1 tag (h1 gets turned into p)

[Piotrek Koszuliński]

Actually, this is an intentional behaviour. As long as user copies the content of a single paragraph our HTML insertion algorithm ignores the block element and insert its contents only. The reason why it works this way is that other browsers than IE, while copying a single paragraph, lose information about the block. Therefore, to create the same behaviour on IE and other browsers we ignore the information about pasted block when inserting that HTML into editor.

However, when we'll have #11636 we can change what lands in the clipboard on other browsers, so when a whole paragraph is selected it is pushed into the clipboard. Then we could change the behaviour of inserHtml to not ignore whole blocks. Although, that will be a lot of work to modify these two methods.

[Piotrek Koszuliński]

DUP of #10924.