first version

kirby/config/sections/mixins/empty.php

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+<?php
+
+return [
+    'props' => [
+        /**
+         * Sets the text for the empty state box
+         */
+        'empty' => function (string $empty = null) {
+            return I18n::translate($empty);
+        }
+    ],
+    'methods' => [
+        'isFull' => function () {
+            if ($this->max) {
+                return $this->total >= $this->max;
+            }
+
+            return false;
+        },
+        'validateMax' => function () {
+            if ($this->max && $this->max < $this->total) {
+                return false;
+            }
+
+            return true;
+        }
+    ]
+];

kirby/config/sections/mixins/headline.php

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+<?php
+
+use Kirby\Toolkit\I18n;
+
+return [
+    'props' => [
+        /**
+         * The headline for the section. This can be a simple string or a template with additional info from the parent page.
+         */
+        'headline' => function ($headline = null) {
+            return I18n::translate($headline, $headline);
+        }
+    ],
+    'computed' => [
+        'headline' => function () {
+            return $this->headline ?? ucfirst($this->name);
+        }
+    ]
+];

kirby/config/sections/mixins/layout.php

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+<?php
+
+return [
+    'props' => [
+        /**
+         * Section layout. Available layout methods: list, cards.
+         */
+        'layout' => function (string $layout = 'list') {
+            return $layout === 'cards' ? 'cards' : 'list';
+        }
+    ]
+];

kirby/config/sections/mixins/max.php

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+<?php
+
+return [
+    'props' => [
+        /**
+         * Sets the maximum number of allowed entries in the section
+         */
+        'max' => function (int $max = null) {
+            return $max;
+        }
+    ],
+    'methods' => [
+        'isFull' => function () {
+            if ($this->max) {
+                return $this->total >= $this->max;
+            }
+
+            return false;
+        },
+        'validateMax' => function () {
+            if ($this->max && $this->max < $this->total) {
+                return false;
+            }
+
+            return true;
+        }
+    ]
+];

kirby/config/sections/mixins/min.php

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+<?php
+
+return [
+    'props' => [
+        /**
+         * Sets the minimum number of required entries in the section
+         */
+        'min' => function (int $min = null) {
+            return $min;
+        }
+    ],
+    'methods' => [
+        'validateMin' => function () {
+            if ($this->min && $this->min > $this->total) {
+                return false;
+            }
+
+            return true;
+        }
+    ]
+];

kirby/config/sections/mixins/pagination.php

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+<?php
+
+use Kirby\Toolkit\Pagination;
+
+return [
+    'props' => [
+        /**
+         * Sets the number of items per page. If there are more items the pagination navigation will be shown at the bottom of the section.
+         */
+        'limit' => function (int $limit = 20) {
+            return $limit;
+        },
+        /**
+         * Sets the default page for the pagination. This will overwrite default pagination.
+         */
+        'page' => function (int $page = null) {
+            return $page ?? get('page', 1);
+        },
+    ],
+    'methods' => [
+        'pagination' => function () {
+            $pagination = new Pagination([
+                'limit' => $this->limit,
+                'page'  => $this->page,
+                'total' => $this->total
+            ]);
+
+            return [
+                'limit'  => $pagination->limit(),
+                'offset' => $pagination->offset(),
+                'page'   => $pagination->page(),
+                'total'  => $pagination->total(),
+            ];
+        },
+    ]
+];

kirby/config/sections/mixins/parent.php

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+<?php
+
+use Kirby\Toolkit\Str;
+
+return [
+    'props' => [
+        /**
+         * Sets the query to a parent to find items for the list
+         */
+        'parent' => function (string $parent = null) {
+            return $parent;
+        }
+    ],
+    'methods' => [
+        'parentModel' => function () {
+            $parent = $this->parent;
+
+            if (is_string($parent) === true) {
+                $parent = $this->model->query($parent);
+            }
+
+            if ($parent === null) {
+                return $this->model;
+            }
+
+            return $parent;
+        }
+    ]
+];