<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CodeIgniter\View;
use CodeIgniter\Database\BaseResult;
/**
* HTML Table Generating Class
*
* Lets you create tables manually or from database result objects, or arrays.
*/
class Table
{
/**
* Data for table rows
*
* @var array
*/
public $rows = [];
/**
* Data for table heading
*
* @var array
*/
public $heading = [];
/**
* Data for table footing
*
* @var array
*/
public $footing = [];
/**
* Whether or not to automatically create the table header
*
* @var boolean
*/
public $autoHeading = true;
/**
* Table caption
*
* @var string|null
*/
public $caption;
/**
* Table layout template
*
* @var array
*/
public $template;
/**
* Newline setting
*
* @var string
*/
public $newline = "\n";
/**
* Contents of empty cells
*
* @var string
*/
public $emptyCells = '';
/**
* Callback for custom table layout
*
* @var callable|null
*/
public $function;
/**
* Set the template from the table config file if it exists
*
* @param array $config (default: array())
* @return void
*/
public function __construct($config = [])
{
// initialize config
foreach ($config as $key => $val)
{
$this->template[$key] = $val;
}
}
/**
* Set the template
*
* @param array $template
* @return boolean
*/
public function setTemplate($template)
{
if (! is_array($template))
{
return false;
}
$this->template = $template;
return true;
}
/**
* Set the table heading
*
* Can be passed as an array or discreet params
*
* @return Table
*/
public function setHeading()
{
$this->heading = $this->_prepArgs(func_get_args());
return $this;
}
/**
* Set the table footing
*
* Can be passed as an array or discreet params
*
* @return Table
*/
public function setFooting()
{
$this->footing = $this->_prepArgs(func_get_args());
return $this;
}
/**
* Set columns. Takes a one-dimensional array as input and creates
* a multi-dimensional array with a depth equal to the number of
* columns. This allows a single array with many elements to be
* displayed in a table that has a fixed column count.
*
* @param array $array
* @param integer $columnLimit
* @return array|false
*/
public function makeColumns($array = [], $columnLimit = 0)
{
if (! is_array($array) || $array === [] || ! is_int($columnLimit))
{
return false;
}
// Turn off the auto-heading feature since it's doubtful we
// will want headings from a one-dimensional array
$this->autoHeading = false;
if ($columnLimit === 0)
{
return $array;
}
$new = [];
do
{
$temp = array_splice($array, 0, $columnLimit);
if (count($temp) < $columnLimit)
{
for ($i = count($temp); $i < $columnLimit; $i++)
{
$temp[] = ' ';
}
}
$new[] = $temp;
}
while (count($array) > 0);
// @phpstan-ignore-next-line
return $new;
}
/**
* Set "empty" cells
*
* Can be passed as an array or discreet params
*
* @param mixed $value
* @return Table
*/
public function setEmpty($value)
{
$this->emptyCells = $value;
return $this;
}
/**
* Add a table row
*
* Can be passed as an array or discreet params
*
* @return Table
*/
public function addRow()
{
$this->rows[] = $this->_prepArgs(func_get_args());
return $this;
}
/**
* Prep Args
*
* Ensures a standard associative array format for all cell data
*
* @param array $args
* @return array
*/
protected function _prepArgs(array $args)
{
// If there is no $args[0], skip this and treat as an associative array
// This can happen if there is only a single key, for example this is passed to table->generate
// array(array('foo'=>'bar'))
if (isset($args[0]) && count($args) === 1 && is_array($args[0]) && ! isset($args[0]['data']))
{
$args = $args[0];
}
foreach ($args as $key => $val)
{
if (! is_array($val))
{
$args[$key] = ['data' => $val];
}
}
return $args;
}
/**
* Add a table caption
*
* @param string $caption
* @return Table
*/
public function setCaption($caption)
{
$this->caption = $caption;
return $this;
}
/**
* Generate the table
*
* @param mixed $tableData
*
* @return string
*/
public function generate($tableData = null)
{
// The table data can optionally be passed to this function
// either as a database result object or an array
if (! empty($tableData))
{
if ($tableData instanceof BaseResult)
{
$this->_setFromDBResult($tableData);
}
elseif (is_array($tableData))
{
$this->_setFromArray($tableData);
}
}
// Is there anything to display? No? Smite them!
if (empty($this->heading) && empty($this->rows))
{
return 'Undefined table data';
}
// Compile and validate the template date
$this->_compileTemplate();
// Validate a possibly existing custom cell manipulation function
if (isset($this->function) && ! is_callable($this->function))
{
$this->function = null;
}
// Build the table!
$out = $this->template['table_open'] . $this->newline;
// Add any caption here
if ($this->caption)
{
$out .= '<caption>' . $this->caption . '</caption>' . $this->newline;
}
// Is there a table heading to display?
if (! empty($this->heading))
{
$out .= $this->template['thead_open'] . $this->newline . $this->template['heading_row_start'] . $this->newline;
foreach ($this->heading as $heading)
{
$temp = $this->template['heading_cell_start'];
foreach ($heading as $key => $val)
{
if ($key !== 'data')
{
$temp = str_replace('<th', '<th ' . $key . '="' . $val . '"', $temp);
}
}
$out .= $temp . ($heading['data'] ?? '') . $this->template['heading_cell_end'];
}
$out .= $this->template['heading_row_end'] . $this->newline . $this->template['thead_close'] . $this->newline;
}
// Build the table rows
if (! empty($this->rows))
{
$out .= $this->template['tbody_open'] . $this->newline;
$i = 1;
foreach ($this->rows as $row)
{
// We use modulus to alternate the row colors
$name = fmod($i++, 2) ? '' : 'alt_';
$out .= $this->template['row_' . $name . 'start'] . $this->newline;
foreach ($row as $cell)
{
$temp = $this->template['cell_' . $name . 'start'];
foreach ($cell as $key => $val)
{
if ($key !== 'data')
{
$temp = str_replace('<td', '<td ' . $key . '="' . $val . '"', $temp);
}
}
$cell = $cell['data'] ?? '';
$out .= $temp;
if ($cell === '' || $cell === null)
{
$out .= $this->emptyCells;
}
elseif (isset($this->function))
{
$out .= call_user_func($this->function, $cell);
}
else
{
$out .= $cell;
}
$out .= $this->template['cell_' . $name . 'end'];
}
$out .= $this->template['row_' . $name . 'end'] . $this->newline;
}
$out .= $this->template['tbody_close'] . $this->newline;
}
// Any table footing to display?
if (! empty($this->footing))
{
$out .= $this->template['tfoot_open'] . $this->newline . $this->template['footing_row_start'] . $this->newline;
foreach ($this->footing as $footing)
{
$temp = $this->template['footing_cell_start'];
foreach ($footing as $key => $val)
{
if ($key !== 'data')
{
$temp = str_replace('<th', '<th ' . $key . '="' . $val . '"', $temp);
}
}
$out .= $temp . ($footing['data'] ?? '') . $this->template['footing_cell_end'];
}
$out .= $this->template['footing_row_end'] . $this->newline . $this->template['tfoot_close'] . $this->newline;
}
// And finally, close off the table
$out .= $this->template['table_close'];
// Clear table class properties before generating the table
$this->clear();
return $out;
}
/**
* Clears the table arrays. Useful if multiple tables are being generated
*
* @return Table
*/
public function clear()
{
$this->rows = [];
$this->heading = [];
$this->footing = [];
$this->autoHeading = true;
$this->caption = null;
return $this;
}
/**
* Set table data from a database result object
*
* @param BaseResult $object Database result object
* @return void
*/
protected function _setFromDBResult($object)
{
// First generate the headings from the table column names
if ($this->autoHeading && empty($this->heading))
{
$this->heading = $this->_prepArgs($object->getFieldNames());
}
foreach ($object->getResultArray() as $row)
{
$this->rows[] = $this->_prepArgs($row);
}
}
/**
* Set table data from an array
*
* @param array $data
*
* @return void
*/
protected function _setFromArray($data)
{
if ($this->autoHeading && empty($this->heading))
{
$this->heading = $this->_prepArgs(array_shift($data));
}
foreach ($data as &$row)
{
$this->rows[] = $this->_prepArgs($row);
}
}
/**
* Compile Template
*
* @return void
*/
protected function _compileTemplate()
{
if ($this->template === null)
{
$this->template = $this->_defaultTemplate();
return;
}
foreach ($this->_defaultTemplate() as $field => $template)
{
if (! isset($this->template[$field]))
{
$this->template[$field] = $template;
}
}
}
/**
* Default Template
*
* @return array
*/
protected function _defaultTemplate()
{
return [
'table_open' => '<table border="0" cellpadding="4" cellspacing="0">',
'thead_open' => '<thead>',
'thead_close' => '</thead>',
'heading_row_start' => '<tr>',
'heading_row_end' => '</tr>',
'heading_cell_start' => '<th>',
'heading_cell_end' => '</th>',
'tfoot_open' => '<tfoot>',
'tfoot_close' => '</tfoot>',
'footing_row_start' => '<tr>',
'footing_row_end' => '</tr>',
'footing_cell_start' => '<td>',
'footing_cell_end' => '</td>',
'tbody_open' => '<tbody>',
'tbody_close' => '</tbody>',
'row_start' => '<tr>',
'row_end' => '</tr>',
'cell_start' => '<td>',
'cell_end' => '</td>',
'row_alt_start' => '<tr>',
'row_alt_end' => '</tr>',
'cell_alt_start' => '<td>',
'cell_alt_end' => '</td>',
'table_close' => '</table>',
];
}
}
MGatner