#Custom helpers here :)

class _Link(object):

    '''

    Make a url based on label and url with help of url_for

    @param label:name of link    if not defined url is used

    @param url: the url for link

    '''

    def __call__(self, label='', *url_, **urlargs):

        if label is None or '':

            label = url

        link_fn = link_to(label, url(*url_, **urlargs))

        return link_fn

link = _Link()

class _GetError(object):

    def __call__(self, field_name, form_errors):

        tmpl = """<span class="error_msg">%s</span>"""

        if form_errors and form_errors.has_key(field_name):

            return literal(tmpl % form_errors.get(field_name))

get_error = _GetError()

def recursive_replace(str, replace=' '):

    """

    Recursive replace of given sign to just one instance

    @param str: given string

    @param replace:char to find and replace multiple instances

    Examples::

    >>> recursive_replace("Mighty---Mighty-Bo--sstones",'-')

    'Mighty-Mighty-Bo-sstones'

    """

    if str.find(replace * 2) == -1:

        return str

    else:

        str = str.replace(replace * 2, replace)

        return recursive_replace(str, replace)  

class _ToolTip(object):

    def __call__(self, tooltip_title, trim_at=50):

        """

        Special function just to wrap our text into nice formatted autowrapped

        text

        @param tooltip_title:

        """

        return literal(wrap_paragraphs(tooltip_title, trim_at)\

                       .replace('\n', '<br/>')) 

    def activate(self):

        """

        Adds tooltip mechanism to the given Html all tooltips have to have 

        set class tooltip and set attribute tooltip_title.

        Then a tooltip will be generated based on that

        All with yui js tooltip

        """

        js = '''

        YAHOO.util.Event.onDOMReady(function(){

            function toolTipsId(){

                var ids = [];

                var tts = YAHOO.util.Dom.getElementsByClassName('tooltip');

                for (var i = 0; i < tts.length; i++) {

                    //if element doesn not have and id autgenerate one for tooltip

                    if (!tts[i].id){

                        tts[i].id='tt'+i*100;

                    }

                    ids.push(tts[i].id);

                }

                return ids        

            };

            var myToolTips = new YAHOO.widget.Tooltip("tooltip", { 

                context: toolTipsId(),

                monitorresize:false,

                xyoffset :[0,0],

                autodismissdelay:300000,

                hidedelay:5,

                showdelay:20,

            });

            //Mouse Over event disabled for new repositories since they dont

            //have last commit message

            myToolTips.contextMouseOverEvent.subscribe(

                function(type, args) {

                    var context = args[0];

                    var txt = context.getAttribute('tooltip_title');

                    if(txt){

                        return true;

                    }

                    else{

                        return false;

                    }

                });

            // Set the text for the tooltip just before we display it. Lazy method

            myToolTips.contextTriggerEvent.subscribe( 

                 function(type, args) { 

                        var context = args[0]; 

                        var txt = context.getAttribute('tooltip_title');

                        this.cfg.setProperty("text", txt);

                  });

            //Mouse out 

            myToolTips.contextMouseOutEvent.subscribe(

                function(type, args) {

                    var context = args[0];

                });

        });

        '''         

        return literal(js)

tooltip = _ToolTip()

class _FilesBreadCrumbs(object):

    def __call__(self, repo_name, rev, paths):

        url_l = [link_to(repo_name, url('files_home',

                                        repo_name=repo_name,

                                        revision=rev, f_path=''))]

        paths_l = paths.split('/')

        for cnt, p in enumerate(paths_l, 1):

            if p != '':

                url_l.append(link_to(p, url('files_home',

                                            repo_name=repo_name,

                                            revision=rev,

                                            f_path='/'.join(paths_l[:cnt]))))

        return literal(' / '.join(url_l))

files_breadcrumbs = _FilesBreadCrumbs()

def pygmentize(filenode, **kwargs):

    """

    pygmentize function using pygments

    @param filenode:

    """

    return literal(code_highlight(filenode.content, filenode.lexer, HtmlFormatter(**kwargs)))

def pygmentize_annotation(filenode, **kwargs):

    """

    pygmentize function for annotation

    @param filenode:

    """

    color_dict = g.changeset_annotation_colors

    def gen_color():

        import random

        return [str(random.randrange(10, 235)) for _ in xrange(3)]

    def get_color_string(cs):

        if color_dict.has_key(cs):

            col = color_dict[cs]

        else:

            color_dict[cs] = gen_color()

            col = color_dict[cs]

        return "color: rgb(%s) ! important;" % (', '.join(col))

    def url_func(changeset):

        tooltip_html = "<div style='font-size:0.8em'><b>Author:</b> %s<br/><b>Date:</b> %s</b><br/><b>Message:</b> %s<br/></div>" 

        tooltip_html = tooltip_html % (changeset.author,

                                               changeset.date,

                                               tooltip(changeset.message))

        lnk_format = 'r%s:%s' % (changeset.revision,

                                 changeset.raw_id)

        uri = link_to(

                lnk_format,

                url('changeset_home', repo_name='test',

                    revision=changeset.raw_id),

                style=get_color_string(changeset.raw_id),

                class_='tooltip',

                tooltip_title=tooltip_html

              )

        uri += '\n'

        return uri   

    return literal(annotate_highlight(filenode, url_func, **kwargs))

def repo_name_slug(value):

    """

    Return slug of name of repository

    """

    slug = urlify(value)

    for c in """=[]\;'"<>,/~!@#$%^&*()+{}|:""":

        slug = slug.replace(c, '-')

    slug = recursive_replace(slug, '-')

    return slug

flash = _Flash()

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

# MERCURIAL FILTERS available via h.

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

from mercurial import util

from mercurial.templatefilters import age as _age, person as _person

age = lambda  x:_age(x)

capitalize = lambda x: x.capitalize()

date = lambda x: util.datestr(x)

email = util.email