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1# Copyright 2011 Google Inc. All Rights Reserved.
2"""Module to draw column chart."""
3
4
5class ColumnChart(object):
6  """class to draw column chart."""
7
8  def __init__(self, title, width, height):
9    self.title = title
10    self.chart_div = filter(str.isalnum, title)
11    self.width = width
12    self.height = height
13    self.columns = []
14    self.rows = []
15    self.series = []
16
17  def AddSeries(self, column_name, series_type, color):
18    for i in range(len(self.columns)):
19      if column_name == self.columns[i][1]:
20        self.series.append((i - 1, series_type, color))
21        break
22
23  def AddColumn(self, name, column_type):
24    self.columns.append((column_type, name))
25
26  def AddRow(self, row):
27    self.rows.append(row)
28
29  def GetJavascript(self):
30    res = 'var data = new google.visualization.DataTable();\n'
31    for column in self.columns:
32      res += "data.addColumn('%s', '%s');\n" % column
33    res += 'data.addRows(%s);\n' % len(self.rows)
34    for row in range(len(self.rows)):
35      for column in range(len(self.columns)):
36        val = self.rows[row][column]
37        if isinstance(val, str):
38          val = "'%s'" % val
39        res += 'data.setValue(%s, %s, %s);\n' % (row, column, val)
40
41    series_javascript = ''
42    for series in self.series:
43      series_javascript += "%s: {type: '%s', color: '%s'}, " % series
44
45    chart_add_javascript = """
46var chart_%s = new google.visualization.ComboChart(
47  document.getElementById('%s'));
48chart_%s.draw(data, {width: %s, height: %s, title: '%s', legend: 'none',
49  seriesType: "bars", lineWidth: 0, pointSize: 5, series: {%s},
50  vAxis: {minValue: 0}})
51"""
52
53    res += chart_add_javascript % (self.chart_div, self.chart_div,
54                                   self.chart_div, self.width, self.height,
55                                   self.title, series_javascript)
56    return res
57
58  def GetDiv(self):
59    return "<div id='%s' class='chart'></div>" % self.chart_div
60