Fixing something...

Author: Matthew Hailwood

code/LinkExtension.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Class LinkExtension
+ *
+ * @property Link $owner
+ */
+class LinkExtension extends DataExtension {
+
+    private static $db = [
+        'LinkSeoText'   => 'Varchar(255)',
+        'ForceDownload' => 'Boolean'
+    ];
+
+    private static $has_one = [
+        'OwningPage' => 'Page'
+    ];
+
+    public function updateCMSFields(FieldList $fields) {
+
+        $fields->dataFieldByName('Title')->setTitle(_t('Linkable.TITLE', 'Link Text'));
+
+        $fields->dataFieldByName('OpenInNewWindow')->hideIf("Type")->isEqualTo("File")->end();
+
+        /** @var TextField $seoText */
+        $fields->addFieldToTab('Root.Main', $seoText = TextField::create('LinkSeoText', _t('Linkable.SEOTEXT', 'SEO Title Attribute')), 'Type');
+        $seoText->setDescription('Optional. Will be equal to Link Text if left blank');
+
+        $fields->addFieldToTab('Root.Main', $forceDownload = CheckboxField::create('ForceDownload',
+            _t('Linkable.FORCEDOWNLOAD', 'Force user to download file')));
+        $forceDownload->displayIf('Type')->isEqualTo("File")->end();
+
+        $fields->removeByName('OwningPageID');
+    }
+
+    public function getDownloadAttribute() {
+        /** @var File $component */
+        if ($this->owner->Type === 'File' && $component = $this->owner->getComponent($this->owner->Type)) {
+            if ($component->exists()) {
+                return ' download="' . $component->Name . '" ';
+            }
+
+        }
+
+        return null;
+    }
+
+    public function getTitleAttribute() {
+        return ' title="' . ($this->owner->LinkSeoText ?: $this->owner->Title) . '" ';
+    }
+
+    public function getAttributes(){
+
+        return join(' ', [$this->owner->getTargetAttr(), $this->getDownloadAttribute(), $this->getTitleAttribute()]);
+    }
+}