Force debugging logging for external libs and disables publisher/dataset
Because of the issue in #854, we've temporarily disabled the publisher and
datasets views of the site-usage data until we can resolve the issue.
--- a/ckanext/ga_report/controller.py
+++ b/ckanext/ga_report/controller.py
@@ -191,25 +191,11 @@
q = model.Session.query(GA_Stat).\
filter(GA_Stat.stat_name==k).\
order_by(GA_Stat.period_name)
- # Run the query on all months to gather graph data
- graph = {}
- for stat in q:
- graph[ stat.key ] = graph.get(stat.key,{
- 'name':stat.key,
- 'data': []
- })
- graph[ stat.key ]['data'].append({
- 'x':_get_unix_epoch(stat.period_name),
- 'y':float(stat.value)
- })
- setattr(c, v+'_graph', json.dumps( _to_rickshaw(graph.values(),percentageMode=True) ))
-
# Buffer the tabular data
if c.month:
entries = []
q = q.filter(GA_Stat.period_name==c.month).\
order_by('ga_stat.value::int desc')
-
d = collections.defaultdict(int)
for e in q.all():
d[e.key] += int(e.value)
@@ -218,6 +204,23 @@
entries.append((key,val,))
entries = sorted(entries, key=operator.itemgetter(1), reverse=True)
+ # Run a query on all months to gather graph data
+ graph_query = model.Session.query(GA_Stat).\
+ filter(GA_Stat.stat_name==k).\
+ order_by(GA_Stat.period_name)
+ graph_dict = {}
+ for stat in graph_query:
+ graph_dict[ stat.key ] = graph_dict.get(stat.key,{
+ 'name':stat.key,
+ 'raw': {}
+ })
+ graph_dict[ stat.key ]['raw'][stat.period_name] = float(stat.value)
+ stats_in_table = [x[0] for x in entries]
+ stats_not_in_table = set(graph_dict.keys()) - set(stats_in_table)
+ stats = stats_in_table + sorted(list(stats_not_in_table))
+ graph = [graph_dict[x] for x in stats]
+ setattr(c, v+'_graph', json.dumps( _to_rickshaw(graph,percentageMode=True) ))
+
# Get the total for each set of values and then set the value as
# a percentage of the total
if k == 'Social sources':
@@ -246,7 +249,7 @@
writer = csv.writer(response)
writer.writerow(["Publisher Title", "Publisher Name", "Views", "Visits", "Period Name"])
- top_publishers, top_publishers_graph = _get_top_publishers(None)
+ top_publishers = _get_top_publishers(limit=None)
for publisher,view,visit in top_publishers:
writer.writerow([publisher.title.encode('utf-8'),
@@ -268,7 +271,7 @@
if not c.publisher:
abort(404, 'A publisher with that name could not be found')
- packages = self._get_packages(c.publisher)
+ packages = self._get_packages(publisher=c.publisher, month=c.month)
response.headers['Content-Type'] = "text/csv; charset=utf-8"
response.headers['Content-Disposition'] = \
str('attachment; filename=datasets_%s_%s.csv' % (c.publisher_name, month,))
@@ -297,15 +300,16 @@
if c.month:
c.month_desc = ''.join([m[1] for m in c.months if m[0]==c.month])
- c.top_publishers, graph_data = _get_top_publishers()
- c.top_publishers_graph = json.dumps( _to_rickshaw(graph_data.values()) )
+ c.top_publishers = _get_top_publishers()
+ graph_data = _get_top_publishers_graph()
+ c.top_publishers_graph = json.dumps( _to_rickshaw(graph_data) )
return render('ga_report/publisher/index.html')
- def _get_packages(self, publisher=None, count=-1):
+ def _get_packages(self, publisher=None, month='', count=-1):
'''Returns the datasets in order of views'''
have_download_data = True
- month = c.month or 'All'
+ month = month or 'All'
if month != 'All':
have_download_data = month >= DOWNLOADS_AVAILABLE_FROM
@@ -382,78 +386,71 @@
entry = q.filter(GA_Url.period_name==c.month).first()
c.publisher_page_views = entry.pageviews if entry else 0
- c.top_packages = self._get_packages(c.publisher, 20)
+ c.top_packages = self._get_packages(publisher=c.publisher, count=20, month=c.month)
# Graph query
- top_package_names = [ x[0].name for x in c.top_packages ]
+ top_packages_all_time = self._get_packages(publisher=c.publisher, count=20, month='All')
+ top_package_names = [ x[0].name for x in top_packages_all_time ]
graph_query = model.Session.query(GA_Url,model.Package)\
.filter(model.Package.name==GA_Url.package_id)\
.filter(GA_Url.url.like('/dataset/%'))\
.filter(GA_Url.package_id.in_(top_package_names))
- graph_data = {}
+ all_series = {}
for entry,package in graph_query:
if not package: continue
if entry.period_name=='All': continue
- graph_data[package.id] = graph_data.get(package.id,{
+ all_series[package.name] = all_series.get(package.name,{
'name':package.title,
- 'data':[]
+ 'raw': {}
})
- graph_data[package.id]['data'].append({
- 'x':_get_unix_epoch(entry.period_name),
- 'y':int(entry.pageviews),
- })
-
- c.graph_data = json.dumps( _to_rickshaw(graph_data.values()) )
+ all_series[package.name]['raw'][entry.period_name] = int(entry.pageviews)
+ graph = [ all_series[series_name] for series_name in top_package_names ]
+ c.graph_data = json.dumps( _to_rickshaw(graph) )
return render('ga_report/publisher/read.html')
def _to_rickshaw(data, percentageMode=False):
if data==[]:
return data
- # Create a consistent x-axis
- num_points = [ len(package['data']) for package in data ]
- ideal_index = num_points.index( max(num_points) )
- x_axis = [ point['x'] for point in data[ideal_index]['data'] ]
- for package in data:
- xs = [ point['x'] for point in package['data'] ]
- assert set(xs).issubset( set(x_axis) ), (xs, x_axis)
- # Zero pad any missing values
- for x in set(x_axis).difference(set(xs)):
- package['data'].append( {'x':x, 'y':0} )
- assert len(package['data'])==len(x_axis), (len(package['data']),len(x_axis),package['data'],x_axis,set(x_axis).difference(set(xs)))
- if percentageMode:
- # Transform data into percentage stacks
- totals = {}
- for x in x_axis:
- for package in data:
- for point in package['data']:
- totals[ point['x'] ] = totals.get(point['x'],0) + point['y']
- # Roll insignificant series into a catch-all
- THRESHOLD = 0.01
- significant_series = []
- for package in data:
- for point in package['data']:
- fraction = float(point['y']) / totals[point['x']]
- if fraction>THRESHOLD and not (package in significant_series):
- significant_series.append(package)
- temp = {}
- for package in data:
- if package in significant_series: continue
- for point in package['data']:
- temp[point['x']] = temp.get(point['x'],0) + point['y']
- catch_all = { 'name':'Other','data': [ {'x':x,'y':y} for x,y in temp.items() ] }
- # Roll insignificant series into one
- data = significant_series
- data.append(catch_all)
- # Turn each point into a percentage
- for package in data:
- for point in package['data']:
- point['y'] = (point['y']*100) / totals[point['x']]
- # Sort the points
- for package in data:
- package['data'] = sorted( package['data'], key=lambda x:x['x'] )
- # Strip the latest month's incomplete analytics
- package['data'] = package['data'][:-1]
+ # x-axis is every month in c.months. Note that data might not exist
+ # for entire history, eg. for recently-added datasets
+ x_axis = [x[0] for x in c.months]
+ x_axis.reverse() # Ascending order
+ x_axis = x_axis[:-1] # Remove latest month
+ totals = {}
+ for series in data:
+ series['data'] = []
+ for x_string in x_axis:
+ x = _get_unix_epoch( x_string )
+ y = series['raw'].get(x_string,0)
+ series['data'].append({'x':x,'y':y})
+ totals[x] = totals.get(x,0)+y
+ if not percentageMode:
+ return data
+ # Turn all data into percentages
+ # Roll insignificant series into a catch-all
+ THRESHOLD = 1
+ raw_data = data
+ data = []
+ for series in raw_data:
+ for point in series['data']:
+ percentage = (100*float(point['y'])) / totals[point['x']]
+ if not (series in data) and percentage>THRESHOLD:
+ data.append(series)
+ point['y'] = percentage
+ others = [ x for x in raw_data if not (x in data) ]
+ if len(others):
+ data_other = []
+ for i in range(len(x_axis)):
+ x = _get_unix_epoch(x_axis[i])
+ y = 0
+ for series in others:
+ y += series['data'][i]['y']
+ data_other.append({'x':x,'y':y})
+ data.append({
+ 'name':'Other',
+ 'data': data_other
+ })
return data
@@ -478,35 +475,51 @@
top_publishers = []
res = connection.execute(q, month)
- department_ids = []
for row in res:
g = model.Group.get(row[0])
if g:
- department_ids.append(row[0])
top_publishers.append((g, row[1], row[2]))
-
- graph = {}
- if limit is not None:
- # Query for a history graph of these publishers
- q = model.Session.query(
- GA_Url.department_id,
- GA_Url.period_name,
- func.sum(cast(GA_Url.pageviews,sqlalchemy.types.INT)))\
- .filter( GA_Url.department_id.in_(department_ids) )\
- .filter( GA_Url.period_name!='All' )\
- .filter( GA_Url.url.like('/dataset/%') )\
- .filter( GA_Url.package_id!='' )\
- .group_by( GA_Url.department_id, GA_Url.period_name )
- for dept_id,period_name,views in q:
- graph[dept_id] = graph.get( dept_id, {
- 'name' : model.Group.get(dept_id).title,
- 'data' : []
- })
- graph[dept_id]['data'].append({
- 'x': _get_unix_epoch(period_name),
- 'y': views
- })
- return top_publishers, graph
+ return top_publishers
+
+
+def _get_top_publishers_graph(limit=20):
+ '''
+ Returns a list of the top 20 publishers by dataset visits.
+ (The number to show can be varied with 'limit')
+ '''
+ connection = model.Session.connection()
+ q = """
+ select department_id, sum(pageviews::int) views
+ from ga_url
+ where department_id <> ''
+ and package_id <> ''
+ and url like '/dataset/%%'
+ and period_name='All'
+ group by department_id order by views desc
+ """
+ if limit:
+ q = q + " limit %s;" % (limit)
+
+ res = connection.execute(q)
+ department_ids = [ row[0] for row in res ]
+
+ # Query for a history graph of these department ids
+ q = model.Session.query(
+ GA_Url.department_id,
+ GA_Url.period_name,
+ func.sum(cast(GA_Url.pageviews,sqlalchemy.types.INT)))\
+ .filter( GA_Url.department_id.in_(department_ids) )\
+ .filter( GA_Url.url.like('/dataset/%') )\
+ .filter( GA_Url.package_id!='' )\
+ .group_by( GA_Url.department_id, GA_Url.period_name )
+ graph_dict = {}
+ for dept_id,period_name,views in q:
+ graph_dict[dept_id] = graph_dict.get( dept_id, {
+ 'name' : model.Group.get(dept_id).title,
+ 'raw' : {}
+ })
+ graph_dict[dept_id]['raw'][period_name] = views
+ return [ graph_dict[id] for id in department_ids ]
def _get_publishers():
--- a/ckanext/ga_report/download_analytics.py
+++ b/ckanext/ga_report/download_analytics.py
@@ -1,12 +1,17 @@
import os
import logging
import datetime
+import httplib
import collections
from pylons import config
from ga_model import _normalize_url
import ga_model
#from ga_client import GA
+
+import logging
+logger.setLevel(logging.DEBUG)
+
log = logging.getLogger('ckanext.ga-report')
@@ -178,15 +183,20 @@
# Supported query params at
# https://developers.google.com/analytics/devguides/reporting/core/v3/reference
- results = self.service.data().ga().get(
- ids='ga:' + self.profile_id,
- filters=query,
- start_date=start_date,
- metrics=metrics,
- sort=sort,
- dimensions="ga:pagePath",
- max_results=10000,
- end_date=end_date).execute()
+ try:
+ results = self.service.data().ga().get(
+ ids='ga:' + self.profile_id,
+ filters=query,
+ start_date=start_date,
+ metrics=metrics,
+ sort=sort,
+ dimensions="ga:pagePath",
+ max_results=10000,
+ end_date=end_date).execute()
+ except httplib.BadStatusLine:
+ log.error(u"Failed to download data=> ids: ga:{0}, filters: {1}, start_date: {2}, end_date: {3}, metrics: {4}, sort: {5}, dimensions: ga:pagePath".format(
+ self.profile_id, query, start_date, end_date, metrics, sort ))
+ return dict(url=[])
packages = []
log.info("There are %d results" % results['totalResults'])
--- a/ckanext/ga_report/ga_model.py
+++ b/ckanext/ga_report/ga_model.py
@@ -214,7 +214,7 @@
'pageviews': views[key],
'visits': visits[key],
'department_id': publisher,
- 'package_id': publisher
+ 'package_id': package
}
model.Session.add(GA_Url(**values))
model.Session.commit()
@@ -227,7 +227,7 @@
stores them in GA_Url under the period and recalculates the totals for
the 'All' period.
'''
- progress_total = len(progress_data)
+ progress_total = len(url_data)
progress_count = 0
for url, views, visits in url_data:
progress_count += 1
@@ -381,11 +381,8 @@
order_by(model.Group.name).all()
def get_children(publisher):
- '''Finds child publishers for the given publisher (object). (Not recursive)'''
- from ckan.model.group import HIERARCHY_CTE
- return model.Session.query(model.Group).\
- from_statement(HIERARCHY_CTE).params(id=publisher.id, type='publisher').\
- all()
+ '''Finds child publishers for the given publisher (object). (Not recursive i.e. returns one level)'''
+ return publisher.get_children_groups(type='organization')
def go_down_tree(publisher):
'''Provided with a publisher object, it walks down the hierarchy and yields each publisher,
--- a/ckanext/ga_report/helpers.py
+++ b/ckanext/ga_report/helpers.py
@@ -80,7 +80,7 @@
return base.render_snippet('ga_report/ga_popular_single.html', **context)
-def most_popular_datasets(publisher, count=20):
+def most_popular_datasets(publisher, count=20, preview_image=None):
if not publisher:
_log.error("No valid publisher passed to 'most_popular_datasets'")
@@ -92,7 +92,8 @@
'dataset_count': len(results),
'datasets': results,
- 'publisher': publisher
+ 'publisher': publisher,
+ 'preview_image': preview_image
}
return base.render_snippet('ga_report/publisher/popular.html', **ctx)
@@ -106,8 +107,18 @@
for entry in entries:
if len(datasets) < count:
p = model.Package.get(entry.url[len('/dataset/'):])
+
+ if not p:
+ _log.warning("Could not find Package for {url}".format(url=entry.url))
+ continue
+
+ if not p.state == 'active':
+ _log.warning("Package {0} is not active, it is {1}".format(p.name, p.state))
+ continue
+
if not p in datasets:
datasets[p] = {'views':0, 'visits': 0}
+
datasets[p]['views'] = datasets[p]['views'] + int(entry.pageviews)
datasets[p]['visits'] = datasets[p]['visits'] + int(entry.visits)
@@ -117,3 +128,17 @@
return sorted(results, key=operator.itemgetter(1), reverse=True)
+def month_option_title(month_iso, months, day):
+ month_isos = [ iso_code for (iso_code,name) in months ]
+ try:
+ index = month_isos.index(month_iso)
+ except ValueError:
+ _log.error('Month "%s" not found in list of months.' % month_iso)
+ return month_iso
+ month_name = months[index][1]
+ if index==0:
+ return month_name + (' (up to %s)'%day)
+ return month_name
+
+
+
--- a/ckanext/ga_report/plugin.py
+++ b/ckanext/ga_report/plugin.py
@@ -5,7 +5,8 @@
from ckanext.ga_report.helpers import (most_popular_datasets,
popular_datasets,
- single_popular_dataset)
+ single_popular_dataset,
+ month_option_title)
log = logging.getLogger('ckanext.ga-report')
@@ -27,7 +28,8 @@
'ga_report_installed': lambda: True,
'popular_datasets': popular_datasets,
'most_popular_datasets': most_popular_datasets,
- 'single_popular_dataset': single_popular_dataset
+ 'single_popular_dataset': single_popular_dataset,
+ 'month_option_title': month_option_title
}
def after_map(self, map):
--- a/ckanext/ga_report/public/css/ga_report.css
+++ b/ckanext/ga_report/public/css/ga_report.css
@@ -2,6 +2,11 @@
padding: 1px 0 0 0;
width: 108px;
text-align: center;
+ /* Hack to hide the momentary flash of text
+ * before sparklines are fully rendered */
+ font-size: 1px;
+ color: transparent;
+ overflow: hidden;
}
.rickshaw_chart_container {
position: relative;
@@ -16,16 +21,9 @@
bottom: 0;
}
.rickshaw_legend {
- position: absolute;
- right: 0;
- top: 0;
- margin-left: 15px;
- padding: 0 5px;
background: transparent;
- max-width: 150px;
- overflow: hidden;
- background: rgba(0,0,0,0.05);
- border-radius:5px;
+ width: 100%;
+ padding-top: 4px;
}
.rickshaw_y_axis {
position: absolute;
@@ -38,4 +36,34 @@
color: #000000 !important;
font-weight: normal !important;
}
+.rickshaw_legend .instructions {
+ color: #000;
+ margin-bottom: 6px;
+}
+.rickshaw_legend .line .action {
+ display: none;
+}
+.rickshaw_legend .line .swatch {
+ display: block;
+ float: left;
+}
+.rickshaw_legend .line .label {
+ display: block;
+ white-space: normal;
+ float: left;
+ width: 200px;
+}
+.rickshaw_legend .line .label:hover {
+ text-decoration: underline;
+}
+
+.ga-reports-table .td-numeric {
+ text-align: center;
+}
+.ga-reports-heading {
+ padding-right: 10px;
+ margin-top: 4px;
+ float: left;
+}
+
--- a/ckanext/ga_report/public/scripts/ckanext_ga_reports.js
+++ b/ckanext/ga_report/public/scripts/ckanext_ga_reports.js
@@ -1,12 +1,34 @@
-
var CKAN = CKAN || {};
CKAN.GA_Reports = {};
CKAN.GA_Reports.render_rickshaw = function( css_name, data, mode, colorscheme ) {
+ var graphLegends = $('#graph-legend-container');
+
+ function renderError(alertClass,alertText,legendText) {
+ $("#chart_"+css_name)
+ .html( '<div class="alert '+alertClass+'">'+alertText+'</div>')
+ .closest('.rickshaw_chart_container').css('height',50);
+ var myLegend = $('<div id="legend_'+css_name+'"/>')
+ .html(legendText)
+ .appendTo(graphLegends);
+ }
+
+ if (!Modernizr.svg) {
+ renderError('','Your browser does not support vector graphics. No graphs can be rendered.','(Graph cannot be rendered)');
+ return;
+ }
+ if (data.length==0) {
+ renderError('alert-info','There is not enough data to render a graph.','(No graph available)');
+ return
+ }
+ var myLegend = $('<div id="legend_'+css_name+'"/>').appendTo(graphLegends);
+
var palette = new Rickshaw.Color.Palette( { scheme: colorscheme } );
$.each(data, function(i, object) {
object['color'] = palette.color();
});
+ // Rickshaw renders the legend in reverse order...
+ data.reverse();
var graphElement = document.querySelector("#chart_"+css_name);
@@ -16,27 +38,95 @@
series: data ,
height: 328
});
- var x_axis = new Rickshaw.Graph.Axis.Time( { graph: graph } );
+ var x_axis = new Rickshaw.Graph.Axis.Time( {
+ graph: graph
+ } );
var y_axis = new Rickshaw.Graph.Axis.Y( {
graph: graph,
orientation: 'left',
tickFormat: Rickshaw.Fixtures.Number.formatKMBT,
- element: document.getElementById('y_axis_'+css_name),
+ element: document.getElementById('y_axis_'+css_name)
} );
var legend = new Rickshaw.Graph.Legend( {
element: document.querySelector('#legend_'+css_name),
graph: graph
} );
- var hoverDetail = new Rickshaw.Graph.HoverDetail( {
+ var shelving = new Rickshaw.Graph.Behavior.Series.Toggle( {
graph: graph,
- formatter: function(series, x, y) {
- var date = '<span class="date">' + new Date(x * 1000).toUTCString() + '</span>';
- var swatch = '<span class="detail_swatch" style="background-color: ' + series.color + '"></span>';
- var content = swatch + series.name + ": " + parseInt(y) + '<br>' + date;
- return content;
- }
+ legend: legend
} );
+ myLegend.prepend('<div class="instructions">Click on a series below to isolate its graph:</div>');
graph.render();
};
+CKAN.GA_Reports.bind_sparklines = function() {
+ /*
+ * Bind to the 'totals' tab being on screen, when the
+ * Sparkline graphs should be drawn.
+ * Note that they cannot be drawn sooner.
+ */
+ var created = false;
+ $('a[href="#totals"]').on(
+ 'shown',
+ function() {
+ if (!created) {
+ var sparkOptions = {
+ enableTagOptions: true,
+ type: 'line',
+ width: 100,
+ height: 26,
+ chartRangeMin: 0,
+ spotColor: '',
+ maxSpotColor: '',
+ minSpotColor: '',
+ highlightSpotColor: '#000000',
+ lineColor: '#3F8E6D',
+ fillColor: '#B7E66B'
+ };
+ $('.sparkline').sparkline('html',sparkOptions);
+ created = true;
+ }
+ $.sparkline_display_visible();
+ }
+ );
+};
+CKAN.GA_Reports.bind_sidebar = function() {
+ /*
+ * Bind to changes in the tab behaviour:
+ * Show the correct rickshaw graph in the sidebar.
+ * Not to be called before all graphs load.
+ */
+ $('a[data-toggle="hashtab"]').on(
+ 'shown',
+ function(e) {
+ var href = $(e.target).attr('href');
+ var pane = $(href);
+ if (!pane.length) { console.err('bad href',href); return; }
+ var legend_name = "none";
+ var graph = pane.find('.rickshaw_chart');
+ if (graph.length) {
+ legend_name = graph.attr('id').replace('chart_','');
+ }
+ legend_name = '#legend_'+legend_name;
+ $('#graph-legend-container > *').hide();
+ $('#graph-legend-container .instructions').show();
+ $(legend_name).show();
+ }
+ );
+ /* The first tab might already have been shown */
+ $('li.active > a[data-toggle="hashtab"]').trigger('shown');
+};
+
+CKAN.GA_Reports.bind_month_selector = function() {
+ var handler = function(e) {
+ var target = $(e.delegateTarget);
+ var form = target.closest('form');
+ var url = form.attr('action')+'?month='+target.val()+window.location.hash;
+ window.location = url;
+ };
+ var selectors = $('select[name="month"]');
+ assert(selectors.length>0);
+ selectors.bind('change', handler);
+};
+
--- /dev/null
+++ b/ckanext/ga_report/public/scripts/modernizr-2.6.2.custom.js
@@ -1,1 +1,815 @@
-
+/* Modernizr 2.6.2 (Custom Build) | MIT & BSD
+ * Build: http://modernizr.com/download/#-fontface-backgroundsize-borderimage-borderradius-boxshadow-flexbox-hsla-multiplebgs-opacity-rgba-textshadow-cssanimations-csscolumns-generatedcontent-cssgradients-cssreflections-csstransforms-csstransforms3d-csstransitions-applicationcache-canvas-canvastext-draganddrop-hashchange-history-audio-video-indexeddb-input-inputtypes-localstorage-postmessage-sessionstorage-websockets-websqldatabase-webworkers-geolocation-inlinesvg-smil-svg-svgclippaths-touch-webgl-shiv-cssclasses-addtest-prefixed-teststyles-testprop-testallprops-hasevent-prefixes-domprefixes-load
+ */
+;
+
+
+
+window.Modernizr = (function( window, document, undefined ) {
+
+ var version = '2.6.2',
+
+ Modernizr = {},
+
+ enableClasses = true,
+
+ docElement = document.documentElement,
+
+ mod = 'modernizr',
+ modElem = document.createElement(mod),
+ mStyle = modElem.style,
+
+ inputElem = document.createElement('input') ,
+
+ smile = ':)',
+
+ toString = {}.toString,
+
+ prefixes = ' -webkit- -moz- -o- -ms- '.split(' '),
+
+
+
+ omPrefixes = 'Webkit Moz O ms',
+
+ cssomPrefixes = omPrefixes.split(' '),
+
+ domPrefixes = omPrefixes.toLowerCase().split(' '),
+
+ ns = {'svg': 'http://www.w3.org/2000/svg'},
+
+ tests = {},
+ inputs = {},
+ attrs = {},
+
+ classes = [],
+
+ slice = classes.slice,
+
+ featureName,
+
+
+ injectElementWithStyles = function( rule, callback, nodes, testnames ) {
+
+ var style, ret, node, docOverflow,
+ div = document.createElement('div'),
+ body = document.body,
+ fakeBody = body || document.createElement('body');
+
+ if ( parseInt(nodes, 10) ) {
+ while ( nodes-- ) {
+ node = document.createElement('div');
+ node.id = testnames ? testnames[nodes] : mod + (nodes + 1);
+ div.appendChild(node);
+ }
+ }
+
+ style = ['­','<style id="s', mod, '">', rule, '</style>'].join('');
+ div.id = mod;
+ (body ? div : fakeBody).innerHTML += style;
+ fakeBody.appendChild(div);
+ if ( !body ) {
+ fakeBody.style.background = '';
+ fakeBody.style.overflow = 'hidden';
+ docOverflow = docElement.style.overflow;
+ docElement.style.overflow = 'hidden';
+ docElement.appendChild(fakeBody);
+ }
+
+ ret = callback(div, rule);
+ if ( !body ) {
+ fakeBody.parentNode.removeChild(fakeBody);
+ docElement.style.overflow = docOverflow;
+ } else {
+ div.parentNode.removeChild(div);
+ }
+
+ return !!ret;
+
+ },
+
+
+
+ isEventSupported = (function() {
+
+ var TAGNAMES = {
+ 'select': 'input', 'change': 'input',
+ 'submit': 'form', 'reset': 'form',
+ 'error': 'img', 'load': 'img', 'abort': 'img'
+ };
+
+ function isEventSupported( eventName, element ) {
+
+ element = element || document.createElement(TAGNAMES[eventName] || 'div');
+ eventName = 'on' + eventName;
+
+ var isSupported = eventName in element;
+
+ if ( !isSupported ) {
+ if ( !element.setAttribute ) {
+ element = document.createElement('div');
+ }
+ if ( element.setAttribute && element.removeAttribute ) {
+ element.setAttribute(eventName, '');
+ isSupported = is(element[eventName], 'function');
+
+ if ( !is(element[eventName], 'undefined') ) {
+ element[eventName] = undefined;
+ }
+ element.removeAttribute(eventName);
+ }
+ }
+
+ element = null;
+ return isSupported;
+ }
+ return isEventSupported;
+ })(),
+
+
+ _hasOwnProperty = ({}).hasOwnProperty, hasOwnProp;
+
+ if ( !is(_hasOwnProperty, 'undefined') && !is(_hasOwnProperty.call, 'undefined') ) {
+ hasOwnProp = function (object, property) {
+ return _hasOwnProperty.call(object, property);
+ };
+ }
+ else {
+ hasOwnProp = function (object, property) {
+ return ((property in object) && is(object.constructor.prototype[property], 'undefined'));
+ };
+ }
+
+
+ if (!Function.prototype.bind) {
+ F