Pasting content before a gallery shows after the gallery

[Ipstenu]

Reported by ​bduclos in alpha/beta

1. In visual mode, create a post and add a gallery.
2. Copy some content to your clipboard
3. Click BEFORE the gallery: ​https://cloudup.com/cuNUGTjTEI5
4. Paste.

The text will show up after the gallery, not before.

[bduclos]

Same issue when inserting a new image (or gallery video, audio, using the Add Media button) before the gallery.

1. In visual mode, create a post and add a gallery.
2. Click BEFORE the gallery: ​https://cloudup.com/cuNUGTjTEI5
3. Click Add Media to insert an image (or gallery, video, audio)

The new image will show up after the gallery, not before.

[iseulde]

This happens for all views. Looks like we forgot about this case.

[azaozz]

Yeah, we can add a case for this. For now the workaround is to click/place the caret before the view, then hit Enter to make a new paragraph before pasting.

[iseulde]

Moving to 4.0.1 for consideration.

[iseulde]

I think we should fix this for 4.0.1. There's some code that runs on BeforeSetContent that we should look at for 4.1. Maybe it's not necessary anymore, else it should be adjusted a bit.

[iseulde]

A much better patch, I think.

This fixes another, smaller issue too. When your cursor is before a view and a command is fired that doesn't insert any content, such as the kitchen sink toggle, the cursor moves from the left to the right.

[iseulde]

Patch .3 should be "safe" to add to 4.0.1. We can consider .2 for 4.1.

[azaozz]

In 29766:

TinyMCE wpView: when pasting/inserting content before a view, add new paragraph above it and insert the content there. Props avryl, fixes #29380 for trunk.

[azaozz]

Reopen for 4.0.1

[jeremyfelt]

29380.3.patch applies cleanly to the 4.0 branch, resolves the reported issue, and is ready for merge.

[jeremyfelt]

The above is the long way of saying [29766] is good to merge with 4.0.

[nacin]

In 30257:

TinyMCE wpView: when pasting/inserting content before a view, add new paragraph above it and insert the content there.

Merges [29766] to the 4.0 branch.

props avryl.
fixes #29380.