source: trunk/lib/HTML.inc.php @ 497

<?php
/*
* The Strangecode Codebase - a general application development framework for PHP
* For details visit the project site: <http://trac.strangecode.com/>
* Copyright © 2014 Strangecode, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/*
* HTML()
*
* Tools for building HTML from PHP data.
*
* @author   Quinn Comendant <quinn@strangecode.com>
* @version  1.0
* @since    11 Sep 2014 21:08:06
*
* Example of use:
---------------------------------------------------------------------
echo HTML::buttons(array(
    array('name' => 'submit', 'value' => _("Save changes"), 'class' => 'small button', 'accesskey' => 's'),
    array('name' => 'reset', 'value' => _("Reset"), 'class' => 'small button secondary', 'accesskey' => 'r'),
    array('name' => 'cancel', 'value' => _("Cancel"), 'class' => 'small button secondary', 'accesskey' => 'c'),
));
---------------------------------------------------------------------
*/

class HTML {

    /**
    * Prints submit buttons based on given array of submit button names and titles. If the array includes an 'href' key, the
    * button is created using a <a> otherwise an <input type="
" /> is used.
    *
    * @access  public
    * @param   array   $buttons     Array of buttons, the key being the button name, and value being the title of the button.
    * @return  void
    * @author   Quinn Comendant <quinn@strangecode.com>
    * @version  1.0
    * @since    12 Sep 2014 00:17:38
    */
    static public function printButtons($buttons=array(), $class='button-group')
    {
        if (!isset($buttons[0]) || !is_array($buttons[0])) {
            $app =& App::getInstance();
            $app->logMsg(sprintf('Incorrect parameters passed to HTML::buttons(): %s', getDump($buttons)), LOG_DEBUG, __FILE__, __LINE__);
            return false;
        }
        if (empty($buttons)) {
            return '';
        }
        ?><ul class="<?php echo oTxt($class) ?>"><?php
        foreach ($buttons as $i => $b) {
            $defaults = array();
            $defaults['type'] = isset($b['type']) ? $b['type'] : 'submit';
            $b = array_merge($defaults, $b);
            if (isset($b['href'])) {
                echo '<li><a';
                foreach (array_diff_key($b, array('value' => null)) as $key => $value) {
                    printf(' %s="%s"', $key, oTxt($value));
                }
                echo '>' . oTxt($b['value']) . '</a></li>';
            } else if (isset($b['name'])) {
                $defaults['id'] = isset($b['id']) ? $b['id'] : sprintf('sc-%s-button', $b['name']);
                echo '<li><input';
                foreach ($b as $key => $value) {
                    printf(' %s="%s"', $key, oTxt($value));
                }
                echo ' /></li>';
            } else {
                $app->logMsg(sprintf('Button missing name or href: %s', getDump($b)), LOG_ERR, __FILE__, __LINE__);
                continue;
            }
        }
        ?></ul><?php
    }

    /*
    * Return an array of key-value pairs matching a database query for the given parameters. This is useful for
    * injecting into HTML::printSelectOptions().
    *
    * @access   public
    * @param  string $db_table         database table to lookup
    * @param  string $key_column       column containing the human-readable titles for the select menu
    * @param  string $val_column       column containing the computer values for the select menu
    * @param  string $preselected      the currently selected value of the menu. compared to the $val_column
    * @param  bool   $first            Optional first item; set true for a blank item, array for item with name and value.
    * @param  string $extra_clause     SQL exclude clause. Something like "WHERE girls != 'buckteeth'"
    * @return array                    Array of options suitable to pass into HTML::printSelectOptions().
    * @author   Quinn Comendant <quinn@strangecode.com>
    * @version  1.0
    * @since    12 Sep 2014 11:43:23
    */
    static public function getSelectOptions($db_table, $key_column, $val_column, $preselected, $first=false, $extra_clause='', $sql_format='SELECT %1$s, %2$s FROM %3$s %4$s')
    {
        $db =& DB::getInstance();

        // Sometimes preselected comes as a comma list.
        if (!is_array($preselected)) {
            $preselected = array($preselected);
        }

        $options = array();
        if (true === $first) {
            // Include a blank first option.
            $options[] = array(
                'value' => '',
                'selected' => in_array('', $preselected),
                'text' => '',
            );
        } else if (is_array($first)) {
            // When the 'blank' first option needs a specific key->val pair.
            foreach ($first as $key => $val) {
                $options[] = array(
                    'value' => $key,
                    'selected' => in_array($key, $preselected),
                    'text' => $val,
                );
            }
        }

        $db =& DB::getInstance();
        $qid = $db->query(sprintf($sql_format, $key_column, $val_column, $db_table, $extra_clause), false);
        while ($row = mysql_fetch_assoc($qid)) {
            $options[] = array(
                'value' => $row[$val_column],
                'selected' => in_array($row[$val_column], $preselected),
                'text' => $row[$key_column],
            );
        }
        return $options;
    }

    /**
     * Prints option fields for a select form. Works only with enum or set
     * data types in table columns.
     *
     * @param  string $db_table     Database table to lookup
     * @param  string $db_col       Database column to lookup
     * @param  string $preselected  The currently selected value of the menu. compared to the $val_column
     * @param  bool   $first        Optional first item; set true for a blank item, array for item with name and value.
     * @param  bool   $sort         Sort the output.
     */
    static public function getSelectOptionsEnum($db_table, $db_col, $preselected, $first=false, $sort=false)
    {
        // Sometimes preselected comes as a comma list.
        if (!is_array($preselected)) {
            $preselected = array($preselected);
        }

        $options = array();
        if (true === $first) {
            // Include a blank first option.
            $options[] = array(
                'value' => '',
                'selected' => in_array('', $preselected),
                'text' => '',
            );
        } else if (is_array($first)) {
            // When the 'blank' first option needs a specific key->val pair.
            foreach ($first as $key => $val) {
                $options[] = array(
                    'value' => $key,
                    'selected' => in_array($key, $preselected),
                    'text' => $val,
                );
            }
        }

        $db =& DB::getInstance();
        $values = $db->getEnumValues($db_table, $db_col, $sort);
        foreach ($values as $v) {
            $options[] = array(
                'value' => $v,
                'selected' => in_array($v, $preselected),
                'text' => $v,
            );
        }

        return $options;
    }

    /**
     * Prints a select menu containing the specified values and keys of a table.
     *
     */
    static public function printSelectOptions($options)
    {
        if (!isset($options) || !is_array($options)) {
            $app =& App::getInstance();
            $app->logMsg(sprintf('Incorrect parameters passed to HTML::printSelectOptions(): %s', getDump($options)), LOG_DEBUG, __FILE__, __LINE__);
            return false;
        }
        if (empty($options)) {
            return '';
        }

        foreach ($options as $o) {
            printf('<option value="%s"%s>%s</option>',
                oTxt($o['value']),
                ($o['selected'] ? ' selected' : ''),
                oTxt($o['text'])
            );
        }
    }
}