# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr

#

# This file is part of CubicWeb.

#

# CubicWeb is free software: you can redistribute it and/or modify it under the

# terms of the GNU Lesser General Public License as published by the Free

# Software Foundation, either version 2.1 of the License, or (at your option)

# any later version.

#

# CubicWeb 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 Lesser General Public License for more

# details.

#

# You should have received a copy of the GNU Lesser General Public License along

# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.

"""html widgets

those are in cubicweb since we need to know available widgets at schema

serialization time

"""

import random

from math import floor

from six.moves import range

from logilab.mtconverter import xml_escape

from logilab.common.deprecation import class_deprecated

from cubicweb.utils import UStringIO

from cubicweb.uilib import toggle_action, htmlescape

from cubicweb.web import jsonize

from cubicweb.web.component import _bwcompatible_render_item

# XXX HTMLWidgets should have access to req (for datadir / static urls,

#     i18n strings, etc.)

class HTMLWidget(object):

    def _initialize_stream(self, w=None):

        if w:

            self.w = w

        else:

            self._stream = UStringIO()

            self.w = self._stream.write

    def _render(self):

        raise NotImplementedError

    def render(self, w=None):

        self._initialize_stream(w)

        self._render()

        if w is None:

            return self._stream.getvalue()

    def is_empty(self):

        return False

class BoxWidget(HTMLWidget): # XXX Deprecated

    def __init__(self, title, id, items=None, _class="boxFrame",

                 islist=True, shadow=True, escape=True):

        self.title = title

        self.id = id

        self.items = items or []

        self._class = _class

        self.islist = islist

        self.shadow = shadow

        self.escape = escape

    def __len__(self):

        return len(self.items)

    def is_empty(self):

        return len(self) == 0

    def append(self, item):

        self.items.append(item)

    def extend(self, items):

        self.items.extend(items)

    title_class = 'boxTitle'

    main_div_class = 'boxContent'

    listing_class = 'boxListing'

    def box_begin_content(self):

        self.w(u'<div class="%s">\n' % self.main_div_class)

        if self.islist:

            self.w(u'<ul class="%s">' % self.listing_class)

    def box_end_content(self):

        if self.islist:

            self.w(u'</ul>\n')

        self.w(u'</div>\n')

        if self.shadow:

            self.w(u'<div class="shadow">&#160;</div>')

    def _render(self):

        if self.id:

            self.w(u'<div class="%s" id="%s">' % (self._class, self.id))

        else:

            self.w(u'<div class="%s">' % self._class)

        if self.title:

            if self.escape:

                title = '<span>%s</span>' % xml_escape(self.title)

            else:

                title = '<span>%s</span>' % self.title

            self.w(u'<div class="%s">%s</div>' % (self.title_class, title))

        if self.items:

            self.box_begin_content()

            for item in self.items:

                _bwcompatible_render_item(self.w, item)

            self.box_end_content()

        self.w(u'</div>')

class SideBoxWidget(BoxWidget):

    """default CubicWeb's sidebox widget"""

    __deprecation_warning__ = '[3.10] class %(cls)s is deprecated'

    title_class = u'sideBoxTitle'

    main_div_class = u'sideBoxBody'

    listing_class = ''

    def __init__(self, title, id=None):

        super(SideBoxWidget, self).__init__(title, id=id, _class='sideBox',

                                            shadow=False)

class MenuWidget(BoxWidget):

    main_div_class = 'menuContent'

    listing_class = 'menuListing'

    def box_end_content(self):

        if self.islist:

            self.w(u'</ul>\n')

        self.w(u'</div>\n')

class RawBoxItem(HTMLWidget): # XXX deprecated

    """a simple box item displaying raw data"""

    def __init__(self, label, liclass=None):

        self.label = label

        self.liclass = liclass

    def _start_li(self):

        if self.liclass is None:

            return u'<li>'

        else:

            return u'<li class="%s">' % self.liclass

    def _render(self):

        self.w(u'%s%s</li>' % (self._start_li(), self.label))

class BoxMenu(RawBoxItem):

    """a menu in a box"""

    link_class = 'boxMenu'

    def __init__(self, label, items=None, isitem=True, liclass=None, ident=None,

                 link_class=None):

        super(BoxMenu, self).__init__(label, liclass)

        self.items = items or []

        self.isitem = isitem

        self.ident = ident or u'boxmenu_%s' % label.replace(' ', '_').replace("'", '')

        if link_class:

            self.link_class = link_class

    def append(self, item):

        self.items.append(item)

    def _begin_menu(self, ident):

        self.w(u'<ul id="%s" class="hidden">' % ident)

    def _end_menu(self):

        self.w(u'</ul>')

    def _render(self):

        if self.isitem:

            self.w(self._start_li())

        ident = self.ident

        self.w(u'<a href="%s" class="%s">%s</a>' % (

            toggle_action(ident), self.link_class, self.label))

        self._begin_menu(ident)

        for item in self.items:

            _bwcompatible_render_item(self.w, item)

        self._end_menu()

        if self.isitem:

            self.w(u'</li>')

class PopupBoxMenu(BoxMenu):

    """like BoxMenu but uses div and specific css class

    in order to behave like a popup menu

    """

    link_class = 'popupMenu'

    def _begin_menu(self, ident):

        self.w(u'<div class="popupWrapper"><div id="%s" class="hidden popup"><ul>' % ident)

    def _end_menu(self):

        self.w(u'</ul></div></div>')

class BoxField(HTMLWidget):

    """couples label / value meant to be displayed in a box"""

    __deprecation_warning__ = '[3.10] class %(cls)s is deprecated'

    def __init__(self, label, value):

        self.label = label

        self.value = value

    def _render(self):

        self.w(u'<li><div><span class="label">%s</span>&#160;'

               u'<span class="value">%s</span></div></li>'

               % (self.label, self.value))

class BoxSeparator(HTMLWidget):

    """a menu separator"""

    __deprecation_warning__ = '[3.10] class %(cls)s is deprecated'

    def _render(self):

        self.w(u'</ul><hr class="boxSeparator"/><ul>')

class BoxLink(HTMLWidget):

    """a link in a box"""

    __deprecation_warning__ = '[3.10] class %(cls)s is deprecated'

    def __init__(self, href, label, _class='', title='', ident='', escape=False):

        self.href = href

        if escape:

            self.label = xml_escape(label)

        else:

            self.label = label

        self._class = _class or ''

        self.title = title

        self.ident = ident

    def _render(self):

        link = u'<a href="%s" title="%s">%s</a>' % (

            xml_escape(self.href), xml_escape(self.title), self.label)

        if self.ident:

            self.w(u'<li id="%s" class="%s">%s</li>\n' % (self.ident, self._class, link))

        else:

            self.w(u'<li class="%s">%s</li>\n' % (self._class, link))

class BoxHtml(HTMLWidget):

    """a form in a box"""

    __deprecation_warning__ = '[3.10] class %(cls)s is deprecated'

    def __init__(self, rawhtml):

        self.rawhtml = rawhtml

    def _render(self):

        self.w(self.rawhtml)

class TableColumn(object):

    def __init__(self, name, rset_sortcol):

        """

        :param name: the column's name

        :param rset_sortcol: the model's column used to sort this column view

        """

        self.name = name

        self.cellrenderers = []

        self.rset_sortcol = rset_sortcol

        self.cell_attrs = {}

    def append_renderer(self, cellvid, colindex):

        # XXX (adim) : why do we need colindex here ?

        self.cellrenderers.append( (cellvid, colindex) )

    def add_attr(self, attr, value):

        self.cell_attrs[attr] = value

class SimpleTableModel(object):

    """

    uses a list of lists as a storage backend

    NB: the model expectes the cellvid passed to

    TableColumn.append_renderer to be a callable accepting a single

    argument and returning a unicode object

    """

    def __init__(self, rows):

        self._rows = rows

    def get_rows(self):

        return self._rows

    def render_cell(self, cellvid, rowindex, colindex, w):

        value = self._rows[rowindex][colindex]

        w(cellvid(value))

    @htmlescape

    @jsonize

    def sortvalue(self, rowindex, colindex):

        value =  self._rows[rowindex][colindex]

        if value is None:

            return u''

        elif isinstance(value, int):

            return u'%09d' % value

        else:

            return unicode(value)

class TableWidget(HTMLWidget):

    """

    Display data in a Table with sortable column.

    When using remember to include the required css and js with:

    self._cw.add_js('jquery.tablesorter.js')

    self._cw.add_css(('cubicweb.tablesorter.css', 'cubicweb.tableview.css'))

    """

    highlight = "onmouseover=\"$(this).addClass('highlighted');\" " \

                "onmouseout=\"$(this).removeClass('highlighted');\""

    def __init__(self, model):

        self.model = model

        self.columns = []

    def append_column(self, column):

        """

        :type column: TableColumn

        """

        self.columns.append(column)

    def _render(self):

        self.w(u'<table class="listing">')

        self.w(u'<thead>')

        self.w(u'<tr class="header">')

        for column in self.columns:

            attrs = ('%s="%s"' % (name, value) for name, value in column.cell_attrs.items())

            self.w(u'<th %s>%s</th>' % (' '.join(attrs), column.name or u''))

        self.w(u'</tr>')

        self.w(u'</thead><tbody>')

        for rowindex in range(len(self.model.get_rows())):

            klass = (rowindex%2==1) and 'odd' or 'even'

            self.w(u'<tr class="%s" %s>' % (klass, self.highlight))

            for column, sortvalue in self.itercols(rowindex):

                attrs = dict(column.cell_attrs)

                attrs["cubicweb:sortvalue"] = sortvalue

                attrs = ('%s="%s"' % (name, value) for name, value in attrs.items())

                self.w(u'<td %s>' % (' '.join(attrs)))

                for cellvid, colindex in column.cellrenderers:

                    self.model.render_cell(cellvid, rowindex, colindex, w=self.w)

                self.w(u'</td>')

            self.w(u'</tr>')

        self.w(u'</tbody>')

        self.w(u'</table>')

    def itercols(self, rowindex):

        for column in self.columns:

            yield column, self.model.sortvalue(rowindex, column.rset_sortcol)