Adding option to stop at a conditional styling, if it matches

This would be used like `$conditonal->setStopIfTrue()` and is only supported
for XLSX format for now.

Closes #292

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 
 - Support cell comments in HTML writer and reader- [#308](https://github.com/PHPOffice/PhpSpreadsheet/issues/308)
+- Option to stop at a conditional styling, if it matches (only XLSX format) - [#292](https://github.com/PHPOffice/PhpSpreadsheet/pull/292)
 
 ### Fixed
 

src/PhpSpreadsheet/Reader/Xlsx.php

@@ -990,6 +990,10 @@ class Xlsx extends BaseReader
                                             $objConditional->setText((string) $cfRule['text']);
                                         }
 
+                                        if (isset($cfRule['stopIfTrue']) && (int) $cfRule['stopIfTrue'] === 1) {
+                                            $objConditional->setStopIfTrue(true);
+                                        }
+
                                         if (count($cfRule->formula) > 1) {
                                             foreach ($cfRule->formula as $formula) {
                                                 $objConditional->addCondition((string) $formula);

src/PhpSpreadsheet/Style/Conditional.php

@@ -2,7 +2,6 @@
 
 namespace PhpOffice\PhpSpreadsheet\Style;
 
-use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
 use PhpOffice\PhpSpreadsheet\IComparable;
 
 class Conditional implements IComparable
@@ -33,14 +32,14 @@ class Conditional implements IComparable
      *
      * @var string
      */
-    private $conditionType;
+    private $conditionType = self::CONDITION_NONE;
 
     /**
      * Operator type.
      *
      * @var string
      */
-    private $operatorType;
+    private $operatorType = self::OPERATOR_NONE;
 
     /**
      * Text.
@@ -49,6 +48,13 @@ class Conditional implements IComparable
      */
     private $text;
 
+    /**
+     * Stop on this condition, if it matches.
+     *
+     * @var bool
+     */
+    private $stopIfTrue = false;
+
     /**
      * Condition.
      *
@@ -69,10 +75,6 @@ class Conditional implements IComparable
     public function __construct()
     {
         // Initialise values
-        $this->conditionType = self::CONDITION_NONE;
-        $this->operatorType = self::OPERATOR_NONE;
-        $this->text = null;
-        $this->condition = [];
         $this->style = new Style(false, true);
     }
 
@@ -148,6 +150,30 @@ class Conditional implements IComparable
         return $this;
     }
 
+    /**
+     * Get StopIfTrue.
+     *
+     * @return bool
+     */
+    public function getStopIfTrue()
+    {
+        return $this->stopIfTrue;
+    }
+
+    /**
+     * Set StopIfTrue.
+     *
+     * @param bool $value
+     *
+     * @return Conditional
+     */
+    public function setStopIfTrue($value)
+    {
+        $this->stopIfTrue = $value;
+
+        return $this;
+    }
+
     /**
      * Get Conditions.
      *
@@ -204,8 +230,6 @@ class Conditional implements IComparable
      *
      * @param Style $pValue
      *
-     * @throws PhpSpreadsheetException
-     *
      * @return Conditional
      */
     public function setStyle(Style $pValue = null)

src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php

@@ -491,6 +491,10 @@ class Worksheet extends WriterPart
                         $objWriter->writeAttribute('text', $conditional->getText());
                     }
 
+                    if ($conditional->getStopIfTrue()) {
+                        $objWriter->writeAttribute('stopIfTrue', '1');
+                    }
+
                     if ($conditional->getConditionType() == Conditional::CONDITION_CONTAINSTEXT
                         && $conditional->getOperatorType() == Conditional::OPERATOR_CONTAINSTEXT
                         && $conditional->getText() !== null) {

tests/PhpSpreadsheetTests/Functional/ConditionalStopIfTrueTest.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Functional;
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+class ConditionalStopIfTrueTest extends AbstractFunctional
+{
+    const COLOR_GREEN = 'FF99FF66';
+    const COLOR_RED = 'FFFF5050';
+
+    public function providerFormats()
+    {
+        return [
+            ['Xlsx'],
+        ];
+    }
+
+    /**
+     * @dataProvider providerFormats
+     *
+     * @param string $format
+     */
+    public function testConditionalStopIfTrue($format)
+    {
+        $pCoordinate = 'A1:A3';
+
+        // if blank cell -> no styling
+        $condition0 = new \PhpOffice\PhpSpreadsheet\Style\Conditional();
+        $condition0->setConditionType(\PhpOffice\PhpSpreadsheet\Style\Conditional::CONDITION_EXPRESSION);
+        $condition0->addCondition('LEN(TRIM(A1))=0');
+        $condition0->setStopIfTrue(true); // ! stop here
+
+        // if value below 0.6 (matches also blank cells!) -> red background
+        $condition1 = new \PhpOffice\PhpSpreadsheet\Style\Conditional();
+        $condition1->setConditionType(\PhpOffice\PhpSpreadsheet\Style\Conditional::CONDITION_CELLIS);
+        $condition1->setOperatorType(\PhpOffice\PhpSpreadsheet\Style\Conditional::OPERATOR_LESSTHAN);
+        $condition1->addCondition(0.6);
+        $condition1->getStyle()->getFill()
+            ->setFillType(\PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID)
+            ->getEndColor()->setARGB(self::COLOR_RED);
+
+        // if value above 0.6 -> green background
+        $condition2 = new \PhpOffice\PhpSpreadsheet\Style\Conditional();
+        $condition2->setConditionType(\PhpOffice\PhpSpreadsheet\Style\Conditional::CONDITION_CELLIS);
+        $condition2->setOperatorType(\PhpOffice\PhpSpreadsheet\Style\Conditional::OPERATOR_GREATERTHAN);
+        $condition2->addCondition(0.6);
+        $condition2->getStyle()->getFill()
+            ->setFillType(\PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID)
+            ->getEndColor()->setARGB(self::COLOR_GREEN);
+
+        $spreadsheet = new Spreadsheet();
+        $spreadsheet->getActiveSheet()->getCell('A1')->setValue(0.7);
+        $spreadsheet->getActiveSheet()->getCell('A2')->setValue('');
+        $spreadsheet->getActiveSheet()->getCell('A3')->setValue(0.4);
+
+        // put all three conditions in sheet
+        $conditionalStyles = [];
+        array_push($conditionalStyles, $condition0);
+        array_push($conditionalStyles, $condition1);
+        array_push($conditionalStyles, $condition2);
+        $spreadsheet->getActiveSheet()->setConditionalStyles($pCoordinate, $conditionalStyles);
+
+        $reloadedSpreadsheet = $this->writeAndReload($spreadsheet, $format);
+
+        // see if we successfully written "StopIfTrue"
+        $newConditionalStyles = $reloadedSpreadsheet->getActiveSheet()->getConditionalStyles($pCoordinate);
+        self::assertTrue($newConditionalStyles[0]->getStopIfTrue(), 'StopIfTrue should be set (=true) on first condition');
+        self::assertFalse($newConditionalStyles[1]->getStopIfTrue(), 'StopIfTrue should not be set (=false) on second condition');
+        self::assertFalse($newConditionalStyles[2]->getStopIfTrue(), 'StopIfTrue should not be set (=false) on third condition');
+    }
+}