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<?php /* vim: set expandtab sw=4 ts=4 sts=4: */ /** * Contains abstract class to hold relation preferences/statistics * * @package PhpMyAdmin */ declare(strict_types=1); namespace PhpMyAdmin\Plugins\Schema; use PhpMyAdmin\Plugins\Schema\TableStats; /** * Relations preferences/statistics * * This class fetches the table master and foreign fields positions * and helps in generating the Table references and then connects * master table's master field to foreign table's foreign key. * * @package PhpMyAdmin * @abstract */ abstract class RelationStats { protected $diagram; /** * Defines properties */ public $xSrc; public $ySrc; public $srcDir; public $destDir; public $xDest; public $yDest; public $wTick; /** * The constructor * * @param object $diagram The diagram * @param string $master_table The master table name * @param string $master_field The relation field in the master table * @param string $foreign_table The foreign table name * @param string $foreign_field The relation field in the foreign table */ public function __construct( $diagram, $master_table, $master_field, $foreign_table, $foreign_field ) { $this->diagram = $diagram; $src_pos = $this->_getXy($master_table, $master_field); $dest_pos = $this->_getXy($foreign_table, $foreign_field); /* * [0] is x-left * [1] is x-right * [2] is y */ $src_left = $src_pos[0] - $this->wTick; $src_right = $src_pos[1] + $this->wTick; $dest_left = $dest_pos[0] - $this->wTick; $dest_right = $dest_pos[1] + $this->wTick; $d1 = abs($src_left - $dest_left); $d2 = abs($src_right - $dest_left); $d3 = abs($src_left - $dest_right); $d4 = abs($src_right - $dest_right); $d = min($d1, $d2, $d3, $d4); if ($d == $d1) { $this->xSrc = $src_pos[0]; $this->srcDir = -1; $this->xDest = $dest_pos[0]; $this->destDir = -1; } elseif ($d == $d2) { $this->xSrc = $src_pos[1]; $this->srcDir = 1; $this->xDest = $dest_pos[0]; $this->destDir = -1; } elseif ($d == $d3) { $this->xSrc = $src_pos[0]; $this->srcDir = -1; $this->xDest = $dest_pos[1]; $this->destDir = 1; } else { $this->xSrc = $src_pos[1]; $this->srcDir = 1; $this->xDest = $dest_pos[1]; $this->destDir = 1; } $this->ySrc = $src_pos[2]; $this->yDest = $dest_pos[2]; } /** * Gets arrows coordinates * * @param TableStats $table The table * @param string $column The relation column name * * @return array Arrows coordinates * * @access private */ private function _getXy($table, $column) { $pos = array_search($column, $table->fields); // x_left, x_right, y return [ $table->x, $table->x + $table->width, $table->y + ($pos + 1.5) * $table->heightCell, ]; } }