feat: VivesPOS landing on Winter CMS 1.2 — theme + plugin + Dockerfile

- Base: wintercms/winter branch 1.2 (full framework)
- Theme vivespos: Canvas 7 + Bootstrap 5 CDN, custom CSS
- Layout: deferred GTM/GA4 tracking, JSON-LD SoftwareApplication
- Partials: hero (offline-first), features, modes (offline/nube toggle),
  screenshots, pricing (3 planes), comparison, FAQ, CTA
- Plugin VivesPOS.Site with ContactForm
- Dockerfile: PHP 8.2 Apache, port 80, healthcheck
- Added winter/wn-pages, blog, sitemap, seo plugins
- Active theme set to vivespos

modules/backend/traits/CollapsableWidget.php

@@ -0,0 +1,129 @@
+<?php namespace Backend\Traits;
+
+/**
+ * Collapsable Widget Trait
+ * Adds collapse/expand item features to back-end widgets
+ *
+ * @package winter\wn-backend-module
+ * @author Alexey Bobkov, Samuel Georges
+ */
+
+trait CollapsableWidget
+{
+    /**
+     * @var string The key name to use when storing collapsed states in the session.
+     */
+    public $collapseSessionKey = 'groups';
+
+    /**
+     * @var array|false Memory cache of collapsed states.
+     */
+    protected $collapseGroupStatusCache = false;
+
+    /**
+     * AJAX handler to toggle a collapsed state. This should take two post variables:
+     * - group: The collapsible group name
+     * - status: The state of the group. Usually a 1 or a 0.
+     *
+     * @return void
+     */
+    public function onSetCollapseStatus()
+    {
+        $this->setCollapseStatus(post('group'), post('status'));
+    }
+
+    /**
+     * Returns the array of all collapsed states belonging to this widget.
+     *
+     * @return array
+     */
+    protected function getCollapseStatuses()
+    {
+        if ($this->collapseGroupStatusCache !== false) {
+            return $this->collapseGroupStatusCache;
+        }
+
+        $groups = $this->getSession($this->collapseSessionKey, []);
+
+        if (!is_array($groups)) {
+            return $this->collapseGroupStatusCache = [];
+        }
+
+        return $this->collapseGroupStatusCache = $groups;
+    }
+
+    /**
+     * Sets a collapsed state.
+     *
+     * @param string $group
+     * @param string $status
+     */
+    protected function setCollapseStatus($group, $status)
+    {
+        $statuses = $this->getCollapseStatuses();
+
+        $statuses[$group] = $status;
+
+        $this->collapseGroupStatusCache = $statuses;
+
+        $this->putSession($this->collapseSessionKey, $statuses);
+    }
+
+    /**
+     * Gets a collapsed state.
+     *
+     * @param string $group
+     * @param bool $default
+     * @return bool|string
+     */
+    protected function getCollapseStatus($group, $default = true)
+    {
+        $statuses = $this->getCollapseStatuses();
+
+        if (array_key_exists($group, $statuses)) {
+            return $statuses[$group];
+        }
+
+        return $default;
+    }
+
+    //
+    // Deprecations, remove if year >= 2019
+    //
+
+    /**
+     * @deprecated  onGroupStatusUpdate is deprecated. Please update onSetCollapseStatus instead.
+     */
+    public function onGroupStatusUpdate()
+    {
+        traceLog('onGroupStatusUpdate is deprecated. Please update onSetCollapseStatus instead. Class: '.get_class($this));
+        $this->onSetCollapseStatus();
+    }
+
+    /**
+     * @deprecated - getGroupStatuses is deprecated. Please update getCollapseStatuses instead.
+     */
+    protected function getGroupStatuses()
+    {
+        traceLog('getGroupStatuses is deprecated. Please update getCollapseStatuses instead. Class: '.get_class($this));
+        return $this->getCollapseStatuses();
+    }
+
+    /**
+     * @deprecated - setGroupStatus is deprecated. Please update setCollapseStatus instead.
+     */
+    protected function setGroupStatus($group, $status)
+    {
+        traceLog('setGroupStatus is deprecated. Please update setCollapseStatus instead. Class: '.get_class($this));
+        return $this->setCollapseStatus($group, $status);
+    }
+
+    /**
+     * @deprecated - getGroupStatus is deprecated. Please update getCollapseStatus instead.
+     */
+    protected function getGroupStatus($group, $default = true)
+    {
+        traceLog('getGroupStatus is deprecated. Please update getCollapseStatus instead. Class: '.get_class($this));
+        return $this->getCollapseStatus($group, $default);
+    }
+}