WebSVN – lars-tiefland.ci – /system/libraries/Table.php

<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2016, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package     CodeIgniter
 * @author      EllisLab Dev Team
 * @copyright   Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright   Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
 * @license     http://opensource.org/licenses/MIT      MIT License
 * @link        https://codeigniter.com
 * @since       Version 1.3.1
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * HTML Table Generating Class
 *
 * Lets you create tables manually or from database result objects, or arrays.
 *
 * @package             CodeIgniter
 * @subpackage  Libraries
 * @category    HTML Tables
 * @author              EllisLab Dev Team
 * @link                https://codeigniter.com/user_guide/libraries/table.html
 */
class CI_Table {

        /**
         * Data for table rows
         *
         * @var array
         */
        public $rows            = array();

        /**
         * Data for table heading
         *
         * @var array
         */
        public $heading         = array();

        /**
         * Whether or not to automatically create the table header
         *
         * @var bool
         */
        public $auto_heading    = TRUE;

        /**
         * Table caption
         *
         * @var string
         */
        public $caption         = NULL;

        /**
         * Table layout template
         *
         * @var array
         */
        public $template        = NULL;

        /**
         * Newline setting
         *
         * @var string
         */
        public $newline         = "\n";

        /**
         * Contents of empty cells
         *
         * @var string
         */
        public $empty_cells     = '';

        /**
         * Callback for custom table layout
         *
         * @var function
         */
        public $function        = NULL;

        /**
         * Set the template from the table config file if it exists
         *
         * @param       array   $config (default: array())
         * @return      void
         */
        public function __construct($config = array())
        {
                // initialize config
                foreach ($config as $key => $val)
                {
                        $this->template[$key] = $val;
                }

                log_message('info', 'Table Class Initialized');
        }

        // --------------------------------------------------------------------

        /**
         * Set the template
         *
         * @param       array   $template
         * @return      bool
         */
        public function set_template($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
         *
         * @param       mixed
         * @return      CI_Table
         */
        public function set_heading($args = array())
        {
                $this->heading = $this->_prep_args(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       int     $col_limit
         * @return      array
         */
        public function make_columns($array = array(), $col_limit = 0)
        {
                if ( ! is_array($array) OR count($array) === 0 OR ! is_int($col_limit))
                {
                        return FALSE;
                }

                // Turn off the auto-heading feature since it's doubtful we
                // will want headings from a one-dimensional array
                $this->auto_heading = FALSE;

                if ($col_limit === 0)
                {
                        return $array;
                }

                $new = array();
                do
                {
                        $temp = array_splice($array, 0, $col_limit);

                        if (count($temp) < $col_limit)
                        {
                                for ($i = count($temp); $i < $col_limit; $i++)
                                {
                                        $temp[] = '&nbsp;';
                                }
                        }

                        $new[] = $temp;
                }
                while (count($array) > 0);

                return $new;
        }

        // --------------------------------------------------------------------

        /**
         * Set "empty" cells
         *
         * Can be passed as an array or discreet params
         *
         * @param       mixed   $value
         * @return      CI_Table
         */
        public function set_empty($value)
        {
                $this->empty_cells = $value;
                return $this;
        }

        // --------------------------------------------------------------------

        /**
         * Add a table row
         *
         * Can be passed as an array or discreet params
         *
         * @param       mixed
         * @return      CI_Table
         */
        public function add_row($args = array())
        {
                $this->rows[] = $this->_prep_args(func_get_args());
                return $this;
        }

        // --------------------------------------------------------------------

        /**
         * Prep Args
         *
         * Ensures a standard associative array format for all cell data
         *
         * @param       array
         * @return      array
         */
        protected function _prep_args($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 => $val)
                {
                        is_array($val) OR $args[$key] = array('data' => $val);
                }

                return $args;
        }

        // --------------------------------------------------------------------

        /**
         * Add a table caption
         *
         * @param       string  $caption
         * @return      CI_Table
         */
        public function set_caption($caption)
        {
                $this->caption = $caption;
        }

        // --------------------------------------------------------------------

        /**
         * Generate the table
         *
         * @param       mixed   $table_data
         * @return      string
         */
        public function generate($table_data = NULL)
        {
                // The table data can optionally be passed to this function
                // either as a database result object or an array
                if ( ! empty($table_data))
                {
                        if ($table_data instanceof CI_DB_result)
                        {
                                $this->_set_from_db_result($table_data);
                        }
                        elseif (is_array($table_data))
                        {
                                $this->_set_from_array($table_data);
                        }
                }

                // 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->_compile_template();

                // 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 .= $temp.(isset($heading['data']) ? $heading['data'] : '').$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 $row)
                        {
                                if ( ! is_array($row))
                                {
                                        break;
                                }

                                // 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);
                                                }
                                        }

                                        $cell = isset($cell['data']) ? $cell['data'] : '';
                                        $out .= $temp;

                                        if ($cell === '' OR $cell === NULL)
                                        {
                                                $out .= $this->empty_cells;
                                        }
                                        elseif (isset($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;
                }

                $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      CI_Table
         */
        public function clear()
        {
                $this->rows = array();
                $this->heading = array();
                $this->auto_heading = TRUE;
                return $this;
        }

        // --------------------------------------------------------------------

        /**
         * Set table data from a database result object
         *
         * @param       CI_DB_result    $db_result      Database result object
         * @return      void
         */
        protected function _set_from_db_result($object)
        {
                // First generate the headings from the table column names
                if ($this->auto_heading === TRUE && empty($this->heading))
                {
                        $this->heading = $this->_prep_args($object->list_fields());
                }

                foreach ($object->result_array() as $row)
                {
                        $this->rows[] = $this->_prep_args($row);
                }
        }

        // --------------------------------------------------------------------

        /**
         * Set table data from an array
         *
         * @param       array   $data
         * @return      void
         */
        protected function _set_from_array($data)
        {
                if ($this->auto_heading === TRUE && empty($this->heading))
                {
                        $this->heading = $this->_prep_args(array_shift($data));
                }

                foreach ($data as &$row)
                {
                        $this->rows[] = $this->_prep_args($row);
                }
        }

        // --------------------------------------------------------------------

        /**
         * Compile Template
         *
         * @return      void
         */
        protected function _compile_template()
        {
                if ($this->template === NULL)
                {
                        $this->template = $this->_default_template();
                        return;
                }

                $this->temp = $this->_default_template();
                foreach (array('table_open', 'thead_open', 'thead_close', 'heading_row_start', 'heading_row_end', 'heading_cell_start', 'heading_cell_end', 'tbody_open', 'tbody_close', 'row_start', 'row_end', 'cell_start', 'cell_end', 'row_alt_start', 'row_alt_end', 'cell_alt_start', 'cell_alt_end', 'table_close') as $val)
                {
                        if ( ! isset($this->template[$val]))
                        {
                                $this->template[$val] = $this->temp[$val];
                        }
                }
        }

        // --------------------------------------------------------------------

        /**
         * Default Template
         *
         * @return      array
         */
        protected function _default_template()
        {
                return array(
                        '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>',

                        '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>'
                );
        }

}
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