Viewing file:  RelationStatsDia.class.php (7.33 KB) -rw-r--r--
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Contains Relation_Stats_Dia class
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* 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.
*
* @package PhpMyAdmin
* @name Relation_Stats_Dia
* @see PMA_DIA
*/
class Relation_Stats_Dia
{
/**
* Defines properties
*/
public $srcConnPointsRight;
public $srcConnPointsLeft;
public $destConnPointsRight;
public $destConnPointsLeft;
public $masterTableId;
public $foreignTableId;
public $masterTablePos;
public $foreignTablePos;
public $referenceColor;
/**
* The "Relation_Stats_Dia" constructor
*
* @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 $foreign_field The relation field in the foreign table
*
* @see Relation_Stats_Dia::_getXy
*/
function __construct($master_table, $master_field, $foreign_table,
$foreign_field
) {
$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 string $table The current table name
* @param string $column The relation column name
*
* @return array Table right,left connection points and key position
*
* @access private
*/
private function _getXy($table, $column)
{
$pos = array_search($column, $table->fields);
// left, right, position
$value = 12;
if ($pos != 0) {
return array($pos + $value + $pos, $pos + $value + $pos + 1, $pos);
}
return array($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.
*
* @param boolean $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 boolean|void
*
* @global object $dia The current Dia document
*
* @access public
* @see PMA_PDF
*/
public function relationDraw($showColor)
{
global $dia;
PMA_Dia_Relation_Schema::$objectId += 1;
/*
* 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) {
$listOfColors = array(
'FF0000',
'000099',
'00FF00'
);
shuffle($listOfColors);
$this->referenceColor = '#' . $listOfColors[0] . '';
} else {
$this->referenceColor = '#000000';
}
$dia->writeRaw(
'<dia:object type="Database - Reference" version="0" id="'
. PMA_Dia_Relation_Schema::$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>'
);
}
}
?>
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