Allow including the plugin inside text editing plugins

[lddubeau]

The stock plugin cannot currently be included inside contents edited with text plugin.

For my own purposes, I've been able to add this functionality to my project by overriding the stock plugin with this code:

import os

from cms.plugin_pool import plugin_pool
from cmsplugin_iframe.cms_plugins import IframePlugin
from django.conf import settings
from django.utils.translation import ugettext as _
from filer.settings import FILER_STATICMEDIA_PREFIX


class MyIframePlugin(IframePlugin):
    text_enabled = True

    def icon_src(self, instance):
        return os.path.normpath("%s/icons/video_%sx%s.png" %
                                (FILER_STATICMEDIA_PREFIX, 32, 32,))

plugin_pool.unregister_plugin(IframePlugin)
plugin_pool.register_plugin(MyIframePlugin)

I use an icon from the filer package because that was expedient. I'm not suggesting this should be part of the final solution.

I did not do this in the code above but icon_alt should also be implemented.

[satyrius]

The original design was for adding iframe directly to placeholder and does not support nesting. The reason is my habits, I prefer not to add plugins with text editor, because I care about html and don't want to fight with editor's html wrappers.

Your solution is good, but it is you own case with filer. It does not looks like a common case. I can add text_enabled = True to the sources, but icon_src and icon_alt looks like custom upgrades and I don't want to make my plugin depending on another.

I think that extending is a good practice. And we should note this in readme file.