feat: add support for quotes

_test/json/quote.json

@@ -0,0 +1,79 @@
+{
+    "type": "doc",
+    "content": [
+        {
+            "type": "paragraph",
+            "content": [
+                {
+                    "type": "text",
+                    "text": "I think we should do it"
+                }
+            ]
+        },
+        {
+            "type": "quote",
+            "content": [
+                {
+                    "type": "text",
+                    "text": " No we shouldn't"
+                }
+            ]
+        },
+        {
+            "type": "quote",
+            "content": [
+                {
+                    "type": "quote",
+                    "content": [
+                        {
+                            "type": "text",
+                            "text": " Well, I say we should"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "type": "quote",
+            "content": [
+                {
+                    "type": "text",
+                    "text": " Really?"
+                }
+            ]
+        },
+        {
+            "type": "quote",
+            "content": [
+                {
+                    "type": "quote",
+                    "content": [
+                        {
+                            "type": "text",
+                            "text": " Yes!"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "type": "quote",
+            "content": [
+                {
+                    "type": "quote",
+                    "content": [
+                        {
+                            "type": "quote",
+                            "content": [
+                                {
+                                    "type": "text",
+                                    "text": " Then lets do it!"
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        }
+    ]
+}

_test/json/quote.txt

@@ -0,0 +1,11 @@
+I think we should do it
+
+> No we shouldn't
+
+>> Well, I say we should
+
+> Really?
+
+>> Yes!
+
+>>> Then lets do it!

parser/Node.php

@@ -17,6 +17,7 @@ abstract class Node {
         'locallink' => LocalLinkNode::class,
         'preformatted' => PreformattedNode::class,
         'code_block' => CodeBlockNode::class,
+        'quote' => QuoteNode::class,
         'image' => ImageNode::class,
         'hard_break' => HardBreakNode::class,
         'horizontal_rule' => HruleNode::class,

parser/QuoteNode.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace dokuwiki\plugin\prosemirror\parser;
+
+
+class QuoteNode extends Node
+{
+    /** @var Node[] */
+    protected $subnodes = [];
+
+    protected $parent;
+
+    public function __construct($data, $parent) {
+        $this->parent = &$parent;
+
+        $previousNode = false;
+        foreach ($data['content'] as $nodeData) {
+            try {
+                $newNode = new self::$nodeclass[$nodeData['type']]($nodeData, $this, $previousNode);
+            } catch (\Throwable $e) {
+                error_log("************ Unknown Node type: " . $nodeData['type'] . " ************");
+                throw $e;
+            }
+            $this->subnodes[] = $newNode;
+            $previousNode = $newNode;
+        }
+    }
+
+    public function toSyntax() {
+        $doc = '>';
+        foreach ($this->subnodes as $subnode) {
+            $doc .= $subnode->toSyntax();
+        }
+        return $doc;
+    }
+}

renderer.php

@@ -55,6 +55,18 @@ class renderer_plugin_prosemirror extends Doku_Renderer {
         $this->nodestack->drop('paragraph');
     }
 
+    /** @inheritDoc */
+    function quote_open()
+    {
+        $this->nodestack->addTop(new Node('quote'));
+    }
+
+    /** @inheritDoc */
+    function quote_close()
+    {
+        $this->nodestack->drop('quote');
+    }
+
     #region lists
 
     /** @inheritDoc */

script/schema.js

@@ -56,6 +56,15 @@ const codeBlock = nodes.get('code_block');
 codeBlock.toDOM = function toDOM() { return ['pre', { class: 'code' }, 0]; };
 nodes = nodes.update('code_block', codeBlock);
 
+nodes = nodes.addToEnd('quote', {
+    content: 'block',
+    group: 'block',
+    inline: false,
+    toDOM() {
+        return ['blockquote', {}, ['div', { class: 'no' }, 0]];
+    },
+});
+
 nodes = nodes.addToEnd('interwikilink', {
     content: 'text',
     marks: '_',