[dev] Full HTML/CSS support on message view

[Rui Carneiro]

On Thu, Sep 10, 2009 at 9:20 PM, Michael M Slusarz <slusarz at horde.org>wrote:

> Quoting Rui Carneiro <rui.carneiro at portugalmail.net>:
>
>> First step is to embed the message on an iframe before showing the
>> message.
>> This will "reset" all previous CSS conditions so we might need to set a
>> few
>> like font family, size or color.
>>
>
> Agreed.  We can simply create a stripped down-stylesheet for this purpose
> (so that it is cached by the server).  For dimp, it will be easiest to
> create a hidden iframe on load, and then clone this iframe as needed to view
> the HTML code.
>

 So your idea is to create 1 iframe for each html part of the message?


> This "#horde_unique_id" should be the id of the element (e.g. div) where
>> the
>> email message will be shown. This way only the elements inside
>> "horde_unique_id" will be affected by message's CSS.
>>
>
> I don't understand why we need this.  If the message part contains CSS
> definitions, it will only be applied within the iframe.  And none of the
> base Horde CSS will be applied within the iframe.
>

I think AOL (Yahoo might be working on it) use this to simplify forward and
reply messages. When you click forward on a html message on this client,
they transform the body element to one div with an unique id (e.g. <div
id="horde_unique_id">). This prevent the new message's CSS from corrupting
the forwarding one.