Ability to add new CSS attributes to the CssSchema DEFINITION

[sakhan19822]

Currently we can only define a whitelist using CssSchema.withProperties method, the properties mentioned in this should be present int the master-set DEFINITIONS mentioned in the class.
In case while configuring we need to add properties to this master-set we can can't as there is not public API exposed to do the same.

[mikesamuel]

What definitions do you need to add?

[sakhan19822]

There are definitions related to microsoft specific properties and addons.

[mikesamuel]

We strip vendor prefixes so any -ms-* properties would go in the normal schema. I don't know what an "addon" is.

[sakhan19822]

we see the following some other schema attributes coming mso-margin-top-alt,mso-add-space, tab-stops, mso-fareast-font-family, mso-bidi-font-family,mso-bidi-theme-font, looking at the code pointed out by you it seems that they are not stripped.
If we can have a way to whitelist these or remove these it will be easy for the end customer to use them as per there need. Something similar was present in antisamy.

[taherjahmed]

I want to add "display: flex" in style attribute.
<div style="display: flex;" />

[Johannesklint]

Any update on this?
I want to add display and float properties but that is stripped away.

[jmanico]

Float can be dangerous via clickjackinf but let’s wait to hear what Mike has to say.

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-- Jim Manico @manicode

On Jan 31, 2020, at 2:31 PM, Johannesklint ***@***.***> wrote:  Any update on this? I want to add display and float properties but that is stripped away. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[csware]

Even if flex is not support out of the box, you can in principle add your own CssSchema rules (only issue, CssSchema.withProperties(Map) does not work rights now, cf. #313 :

new HtmlPolicyBuilder()
          .allowCommonInlineFormattingElements()
          .allowCommonBlockElements()
          .allowStyling(
              CssSchema.withProperties(
                  Map.of("display",
                      new CssSchema.Property(0,
                          Set.of("none", "flex"),
                          Collections.emptyMap()))))