web/htmlwidgets.py
author Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
Wed, 18 Feb 2009 19:19:57 +0100
branchtls-sprint
changeset 823 cb8ccbef8fa5
parent 213 6842c3dee34b
child 843 5676811ef760
permissions -rw-r--r--
main template refactoring there are 2 main templates : - one for non templatable views (xml, binaries, etc.) - one for the other views The right one is chosen according to its selectors

"""html widgets

those are in cubicweb.common since we need to know available widgets at schema
serialization time

:organization: Logilab
:copyright: 2001-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
"""

from logilab.mtconverter import html_escape

from cubicweb.common.utils import UStringIO
from cubicweb.common.uilib import toggle_action

# 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):
    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)

    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">&nbsp;</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>' % html_escape(self.title)
            else:
                title = '<span>%s</span>' % self.title
            self.w(u'<div class="boxTitle">%s</div>' % title)
        if self.items:
            self.box_begin_content()
            for item in self.items:
                item.render(self.w)
            self.box_end_content()
        self.w(u'</div>')


class SideBoxWidget(BoxWidget):
    """default CubicWeb's sidebox widget"""
    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):
    """a simpe 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
        
        return self.label
    
    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:
            item.render(self.w)
        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"""
    def __init__(self, label, value):
        self.label = label
        self.value = value
    
    def _render(self):
        self.w(u'<li><div><span class="label">%s</span>&nbsp;'
               u'<span class="value">%s</span></div></li>' 
               % (self.label, self.value))

class BoxSeparator(HTMLWidget):
    """a menu separator"""
    
    def _render(self):
        self.w(u'</ul><hr class="boxSeparator"/><ul>')


class BoxLink(HTMLWidget):
    """a link in a box"""
    def __init__(self, href, label, _class='', title='', ident='', escape=False):
        self.href = href
        if escape:
            self.label = html_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>' % (
            html_escape(self.href), html_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"""
    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 TableWidget(HTMLWidget):

    highlight = "onmouseover=\"addElementClass(this, 'highlighted');\" " \
                "onmouseout=\"removeElementClass(this, '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.iteritems())
            self.w(u'<th %s>%s</th>' % (' '.join(attrs), column.name))
        self.w(u'</tr>')
        self.w(u'</thead><tbody>')
        for rowindex, row in enumerate(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"] = 'json:' + sortvalue
                attrs = ('%s="%s"' % (name, value) for name, value in attrs.iteritems())
                self.w(u'<td %s>' % (' '.join(attrs)))
                for cellvid, colindex in column.cellrenderers:
                    self.model.render(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)


class ProgressBarWidget(HTMLWidget):
    """display a progress bar widget"""
    def __init__(self, done, todo, total):
        self.done = done
        self.todo = todo
        self.total = total

    def _render(self):
        try:
            pourcent = self.done*100./self.total
        except ZeroDivisionError:
            pourcent = 0
        real_pourcent = pourcent
        if pourcent > 100 :
            color = 'done'
            pourcent = 100
        elif self.todo + self.done > self.total :
            color = 'overpassed'
        else:
            color = 'inprogress'
        if pourcent < 0:
            pourcent = 0
        self.w(u'<div class="progressbarback" title="%i %%">' % real_pourcent)
        self.w(u'<div class="progressbar %s" style="width: %spx; align: left;" ></div>' % (color, pourcent))
        self.w(u'</div>')