From 4dcf545ab207c1c4599f84b319cf3a7a5d897dfc Mon Sep 17 00:00:00 2001
From: Thomas Gelf <thomas@gelf.net>
Date: Mon, 22 Jan 2018 09:43:30 +0100
Subject: [PATCH] Html/Attribute: allow boolean, cosmetics...

...and also allow for colons in attribute names
---
 doc/82-Changelog.md                   |  4 +++
 library/vendor/ipl/Html/Attribute.php | 50 +++++++++++++++++----------
 2 files changed, 36 insertions(+), 18 deletions(-)

diff --git a/doc/82-Changelog.md b/doc/82-Changelog.md
index 47d0a0c7..c29ca10b 100644
--- a/doc/82-Changelog.md
+++ b/doc/82-Changelog.md
@@ -30,6 +30,10 @@ before switching to a new version.
 * FEATURE: new Property Modifier to url-encode values
 * FEATURE: new Property Modifier: uppercase the first character of each word
 
+### Internals
+* FEATURE: Html/Attribute now allows boolean properties
+* FEATURE: Html/Attribute allows colons in attribute names (required for SVGs)
+
 ### Icinga Configuration
 * FEATURE: support flapping settings for Icinga &gt;= 2.8.0 (#330)
 
diff --git a/library/vendor/ipl/Html/Attribute.php b/library/vendor/ipl/Html/Attribute.php
index dcc26ae2..69a7e986 100644
--- a/library/vendor/ipl/Html/Attribute.php
+++ b/library/vendor/ipl/Html/Attribute.php
@@ -19,7 +19,7 @@ class Attribute
     /** @var string */
     protected $name;
 
-    /** @var string|array */
+    /** @var string|array|bool|null */
     protected $value;
 
     /**
@@ -28,7 +28,7 @@ class Attribute
      * @param $name
      * @param $value
      */
-    public function __construct($name, $value)
+    public function __construct($name, $value = null)
     {
         $this->setName($name)->setValue($value);
     }
@@ -43,6 +43,14 @@ class Attribute
         return new static($name, $value);
     }
 
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
     /**
      * @param $name
      * @return $this
@@ -50,22 +58,15 @@ class Attribute
      */
     public function setName($name)
     {
-        if (! preg_match('/^[a-z][a-z-]*$/i', $name)) {
+        if (! preg_match('/^[a-z][a-z:-]*$/i', $name)) {
             throw new ProgrammingError(
                 'Attribute names with special characters are not yet allowed: %s',
                 $name
             );
         }
         $this->name = $name;
-        return $this;
-    }
 
-    /**
-     * @return string
-     */
-    public function getName()
-    {
-        return $this->name;
+        return $this;
     }
 
     /**
@@ -77,12 +78,13 @@ class Attribute
     }
 
     /**
-     * @param string|array $value
+     * @param mixed $value
      * @return $this
      */
     public function setValue($value)
     {
         $this->value = $value;
+
         return $this;
     }
 
@@ -93,7 +95,7 @@ class Attribute
     public function addValue($value)
     {
         if (! is_array($this->value)) {
-            $this->value = array($this->value);
+            $this->value = [$this->value];
         }
 
         if (is_array($value)) {
@@ -105,16 +107,28 @@ class Attribute
         return $this;
     }
 
+    /**
+     * @return bool
+     */
+    public function isBoolean()
+    {
+        return is_bool($this->value);
+    }
+
     /**
      * @return string
      */
     public function render()
     {
-        return sprintf(
-            '%s="%s"',
-            $this->renderName(),
-            $this->renderValue()
-        );
+        if ($this->isBoolean() && $this->value) {
+            return $this->renderName();
+        } else {
+            return sprintf(
+                '%s="%s"',
+                $this->renderName(),
+                $this->renderValue()
+            );
+        }
     }
 
     /**