# ===========================================================================
# eXe 
# Copyright 2004-2006, University of Auckland
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
# ===========================================================================

"""
MathBlock can render and process MathIdevices as XHTML
"""

import logging
from exe.webui.block            import Block
from exe.webui.element          import MathElement

log = logging.getLogger(__name__)

class MathBlock(Block):
    """
    MathBlock can render and process MathIdevices as XHTML
    """

    def __init__(self, parent, idevice):
        Block.__init__(self, parent, idevice)
        self.contentElement = MathElement(idevice.content)
        self.contentElement.height = 250


    def process(self, request):
        """
        Process the request arguments from the web server to see if any
        apply to this block
        """
        Block.process(self, request)
        self.contentElement.process(request)
       


    def renderEdit(self, style):
        """
        Returns an XHTML string with the form element for editing this block
        """
        html  = u"<div>\n"
        html += self.contentElement.renderEdit()
        html += self.renderEditButtons()
        html += u"</div>\n"
        return html


    def renderPreview(self, style):
        """
        Returns an XHTML string for previewing this block
        """
        html  = u"<div class=\"iDevice "
        html += u"emphasis"+unicode(self.idevice.emphasis)+"\" "
        html += u"ondblclick=\"submitLink('edit',"+self.id+", 0);\">\n"
        html += self.contentElement.renderPreview()
        html += self.renderViewButtons()
        html += "</div>\n"
        return html


    def renderView(self, style):
        """
        Returns an XHTML string for viewing this block
        """
        html  = u"<div class=\"iDevice "
        html += u"emphasis"+unicode(self.idevice.emphasis)+"\">\n"
        html += self.contentElement.renderView()
        html += u"</div>\n"
        return html
    

# =========================================================================    
from exe.engine.mathidevice     import MathIdevice
from exe.webui.blockfactory     import g_blockFactory
g_blockFactory.registerBlockType(MathBlock, MathIdevice)    


# ===========================================================================