# GoogleChartDataSet.class.php

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    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2008 by Denis M. Gabaidulin                             *
    00004  *                                                                         *
    00005  *   This program is free software; you can redistribute it and/or modify  *
    00006  *   it under the terms of the GNU Lesser General Public License as        *
    00007  *   published by the Free Software Foundation; either version 3 of the    *
    00008  *   License, or (at your option) any later version.                       *
    00009  *                                                                         *
    00010  ***************************************************************************/
    00011
    00015     final class GoogleChartDataSet
    00016     {
    00017         private $data = array();
    00018
    00019         private $minMax = null;
    00020
    00021         private $base = null;
    00022
    00026         public static function create()
    00027         {
    00028             return new self;
    00029         }
    00030
    00031         public function __construct()
    00032         {
    00033             $this->minMax = FloatRange::create(0, 0);
    00034         }
    00035
    00039         public function setData(array $data)
    00040         {
    00041             $this->data = $data;
    00042
    00043             return $this;
    00044         }
    00045
    00046         public function getData()
    00047         {
    00048             return $this->data;
    00049         }
    00050
    00054         public function addElement($element)
    00055         {
    00056             $this->data[] = $element;
    00057
    00058             return $this;
    00059         }
    00060
    00064         public function setBase($base)
    00065         {
    00066             $this->base = $base;
    00067
    00068             // reset
    00069             $this->minMax->setMax(0);
    00070
    00071             return $this;
    00072         }
    00073
    00074         public function getBase()
    00075         {
    00076             return $this->base;
    00077         }
    00078
    00079         public function getSize()
    00080         {
    00081             return count($this->data);
    00082         }
    00083
    00084         public function getMin()
    00085         {
    00086             return $this->minMax->getMin();
    00087         }
    00088
    00089         public function setMax($max)
    00090         {
    00091             $this->minMax->setMax($max);
    00092
    00093             return $this;
    00094         }
    00095
    00096         public function getMax()
    00097         {
    00098             if ($this->minMax->getMax() == 0)
    00099                 $this->calculateMax();
    00100
    00101             return $this->minMax->getMax();
    00102         }
    00103
    00104         public function getMinMax()
    00105         {
    00106             return $this->minMax;
    00107         }
    00108
    00109         public function getStepSize()
    00110         {
    00111             Assert::isTrue($this->base !== null);
    00112
    00113             if ($this->base == 0)
    00114                 return 0;
    00115             else
    00116                 return $this->getMax() / $this->base;
    00117         }
    00118
    00122         private function calculateMax()
    00123         {
    00124             $maxValue = max($this->data);
    00125
    00126             if ($this->base)
    00127                 $maxValue =
    00128                     MathUtils::alignByBase($maxValue, $this->base, true);
    00129
    00130             if ($maxValue == 0) {
    00131                 if ($this->base)
    00132                     $maxValue = $this->base;
    00133                 else
    00134                     $maxValue = 1;
    00135             }
    00136
    00137             $this->minMax->setMax($maxValue);
    00138
    00139             return $this;
    00140         }
    00141     }
    00142 ?>