File "RelationStatsDia.php"
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<?php
/**
* Contains PhpMyAdmin\Plugins\Schema\Dia\RelationStatsDia class
*/
declare(strict_types=1);
namespace PhpMyAdmin\Plugins\Schema\Dia;
use function array_search;
use function shuffle;
/**
* Relation 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
* in dia XML document.
*/
class RelationStatsDia
{
/** @var Dia */
protected $diagram;
/** @var mixed */
public $srcConnPointsRight;
/** @var mixed */
public $srcConnPointsLeft;
/** @var mixed */
public $destConnPointsRight;
/** @var mixed */
public $destConnPointsLeft;
/** @var int */
public $masterTableId;
/** @var int */
public $foreignTableId;
/** @var mixed */
public $masterTablePos;
/** @var mixed */
public $foreignTablePos;
/** @var string */
public $referenceColor = '#000000';
/**
* @see Relation_Stats_Dia::getXy
*
* @param Dia $diagram The DIA diagram
* @param TableStatsDia $master_table The master table name
* @param string $master_field The relation field in the master table
* @param TableStatsDia $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);
$this->srcConnPointsLeft = $src_pos[0];
$this->srcConnPointsRight = $src_pos[1];
$this->destConnPointsLeft = $dest_pos[0];
$this->destConnPointsRight = $dest_pos[1];
$this->masterTablePos = $src_pos[2];
$this->foreignTablePos = $dest_pos[2];
$this->masterTableId = $master_table->tableId;
$this->foreignTableId = $foreign_table->tableId;
}
/**
* Each Table object have connection points
* which is used to connect to other objects in Dia
* we detect the position of key in fields and
* then determines its left and right connection
* points.
*
* @param TableStatsDia $table The current table name
* @param string $column The relation column name
*
* @return array Table right,left connection points and key position
*/
private function getXy($table, $column)
{
$pos = array_search($column, $table->fields);
// left, right, position
$value = 12;
if ($pos != 0) {
return [
$pos + $value + $pos,
$pos + $value + $pos + 1,
$pos,
];
}
return [
$pos + $value,
$pos + $value + 1,
$pos,
];
}
/**
* Draws relation references
*
* connects master table's master field to foreign table's
* foreign field using Dia object type Database - Reference
* Dia object is used to generate the XML of Dia Document.
* Database reference Object and their attributes are involved
* in the combination of displaying Database - reference on Dia Document.
*
* @see PDF
*
* @param bool $showColor Whether to use one color per relation or not
* if showColor is true then an array of $listOfColors
* will be used to choose the random colors for
* references lines. we can change/add more colors to
* this
*
* @return bool|void
*/
public function relationDraw($showColor)
{
++DiaRelationSchema::$objectId;
/*
* if source connection points and destination connection
* points are same then return it false and don't draw that
* relation
*/
if ($this->srcConnPointsRight == $this->destConnPointsRight) {
if ($this->srcConnPointsLeft == $this->destConnPointsLeft) {
return false;
}
}
if ($showColor) {
$listOfColors = [
'FF0000',
'000099',
'00FF00',
];
shuffle($listOfColors);
$this->referenceColor = '#' . $listOfColors[0] . '';
} else {
$this->referenceColor = '#000000';
}
$this->diagram->writeRaw(
'<dia:object type="Database - Reference" version="0" id="'
. DiaRelationSchema::$objectId . '">
<dia:attribute name="obj_pos">
<dia:point val="3.27,18.9198"/>
</dia:attribute>
<dia:attribute name="obj_bb">
<dia:rectangle val="2.27,8.7175;17.7679,18.9198"/>
</dia:attribute>
<dia:attribute name="meta">
<dia:composite type="dict"/>
</dia:attribute>
<dia:attribute name="orth_points">
<dia:point val="3.27,18.9198"/>
<dia:point val="2.27,18.9198"/>
<dia:point val="2.27,14.1286"/>
<dia:point val="17.7679,14.1286"/>
<dia:point val="17.7679,9.3375"/>
<dia:point val="16.7679,9.3375"/>
</dia:attribute>
<dia:attribute name="orth_orient">
<dia:enum val="0"/>
<dia:enum val="1"/>
<dia:enum val="0"/>
<dia:enum val="1"/>
<dia:enum val="0"/>
</dia:attribute>
<dia:attribute name="orth_autoroute">
<dia:boolean val="true"/>
</dia:attribute>
<dia:attribute name="text_colour">
<dia:color val="#000000"/>
</dia:attribute>
<dia:attribute name="line_colour">
<dia:color val="' . $this->referenceColor . '"/>
</dia:attribute>
<dia:attribute name="line_width">
<dia:real val="0.10000000000000001"/>
</dia:attribute>
<dia:attribute name="line_style">
<dia:enum val="0"/>
<dia:real val="1"/>
</dia:attribute>
<dia:attribute name="corner_radius">
<dia:real val="0"/>
</dia:attribute>
<dia:attribute name="end_arrow">
<dia:enum val="22"/>
</dia:attribute>
<dia:attribute name="end_arrow_length">
<dia:real val="0.5"/>
</dia:attribute>
<dia:attribute name="end_arrow_width">
<dia:real val="0.5"/>
</dia:attribute>
<dia:attribute name="start_point_desc">
<dia:string>#1#</dia:string>
</dia:attribute>
<dia:attribute name="end_point_desc">
<dia:string>#n#</dia:string>
</dia:attribute>
<dia:attribute name="normal_font">
<dia:font family="monospace" style="0" name="Courier"/>
</dia:attribute>
<dia:attribute name="normal_font_height">
<dia:real val="0.59999999999999998"/>
</dia:attribute>
<dia:connections>
<dia:connection handle="0" to="'
. $this->masterTableId . '" connection="'
. $this->srcConnPointsRight . '"/>
<dia:connection handle="1" to="'
. $this->foreignTableId . '" connection="'
. $this->destConnPointsRight . '"/>
</dia:connections>
</dia:object>'
);
}
}