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/formwidgets/DatePicker.php

@@ -0,0 +1,207 @@
+<?php namespace Backend\FormWidgets;
+
+use Config;
+use Carbon\Carbon;
+use Backend\Classes\FormField;
+use Backend\Classes\FormWidgetBase;
+use System\Helpers\DateTime as DateTimeHelper;
+use Winter\Storm\Exception\ApplicationException;
+
+/**
+ * Date picker
+ * Renders a date picker field.
+ *
+ * @package winter\wn-backend-module
+ * @author Alexey Bobkov, Samuel Georges
+ */
+class DatePicker extends FormWidgetBase
+{
+    //
+    // Configurable properties
+    //
+
+    /**
+     * @var bool Display mode: datetime, date, time.
+     */
+    public $mode = 'datetime';
+
+    /**
+     * @var string Provide an explicit date display format.
+     */
+    public $format;
+
+    /**
+     * @var string the minimum/earliest date that can be selected.
+     * eg: 2000-01-01
+     */
+    public $minDate;
+
+    /**
+     * @var string the maximum/latest date that can be selected.
+     * eg: 2020-12-31
+     */
+    public $maxDate;
+
+    /**
+     * @var string number of years either side or array of upper/lower range
+     * eg: 10 or [1900,1999]
+     */
+    public $yearRange;
+
+    /**
+     * @var int first day of the week
+     * eg: 0 (Sunday), 1 (Monday), 2 (Tuesday), etc.
+     */
+    public $firstDay = 0;
+
+    /**
+     * @var bool show week numbers at head of row
+     */
+    public $showWeekNumber = false;
+
+    /**
+     * @var bool change datetime exactly as is in database
+     */
+    public $ignoreTimezone = false;
+
+    //
+    // Object properties
+    //
+
+    /**
+     * @inheritDoc
+     */
+    protected $defaultAlias = 'datepicker';
+
+    /**
+     * @inheritDoc
+     */
+    public function init()
+    {
+        $this->fillFromConfig([
+            'format',
+            'mode',
+            'minDate',
+            'maxDate',
+            'yearRange',
+            'firstDay',
+            'showWeekNumber',
+            'ignoreTimezone',
+        ]);
+
+        $this->mode = strtolower($this->mode);
+
+        if ($this->minDate !== null) {
+            $this->minDate = is_int($this->minDate)
+                ? Carbon::createFromTimestamp($this->minDate)
+                : Carbon::parse($this->minDate);
+        }
+
+        if ($this->maxDate !== null) {
+            $this->maxDate = is_int($this->maxDate)
+                ? Carbon::createFromTimestamp($this->maxDate)
+                : Carbon::parse($this->maxDate);
+        }
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function render()
+    {
+        try {
+            $this->prepareVars();
+        } catch (ApplicationException $ex) {
+            $this->vars['error'] = $ex->getMessage();
+        }
+
+        return $this->makePartial('datepicker');
+    }
+
+    /**
+     * Prepares the list data
+     */
+    public function prepareVars()
+    {
+        if ($value = $this->getLoadValue()) {
+            $value = DateTimeHelper::makeCarbon($value, false);
+
+            if (!($value instanceof Carbon)) {
+                $this->vars['error'] = (sprintf('"%s" is not a valid date / time value.', $value));
+            } else {
+                if ($this->mode === 'date' && !$this->ignoreTimezone) {
+                    $backendTimeZone = \Backend\Models\Preference::get('timezone');
+                    $value->setTimezone($backendTimeZone);
+                    $value->setTime(0, 0, 0);
+                    $value->setTimezone(Config::get('app.timezone'));
+                }
+                $value = $value->toDateTimeString();
+            }
+        }
+
+        // Disable the datepicker visually when readOnly is enabled
+        if ($this->formField->readOnly) {
+            $this->formField->disabled = true;
+        }
+
+        $this->vars['name'] = $this->getFieldName();
+        $this->vars['value'] = $value ?: '';
+        $this->vars['field'] = $this->formField;
+        $this->vars['mode'] = $this->mode;
+        $this->vars['minDate'] = $this->minDate;
+        $this->vars['maxDate'] = $this->maxDate;
+        $this->vars['yearRange'] = $this->yearRange;
+        $this->vars['firstDay'] = $this->firstDay;
+        $this->vars['showWeekNumber'] = $this->showWeekNumber;
+        $this->vars['ignoreTimezone'] = $this->ignoreTimezone;
+        $this->vars['format'] = $this->format;
+        $this->vars['formatMoment'] = $this->getDateFormatMoment();
+        $this->vars['formatAlias'] = $this->getDateFormatAlias();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getSaveValue($value)
+    {
+        if ($this->formField->disabled || $this->formField->hidden) {
+            return FormField::NO_SAVE_DATA;
+        }
+
+        if (!strlen($value)) {
+            return null;
+        }
+
+        return $value;
+    }
+
+    /**
+     * Convert PHP format to JS format
+     */
+    protected function getDateFormatMoment()
+    {
+        if ($this->format) {
+            return DateTimeHelper::momentFormat($this->format);
+        }
+    }
+
+    /*
+     * Display alias, used by preview mode
+     */
+    protected function getDateFormatAlias()
+    {
+        if ($this->format) {
+            return null;
+        }
+
+        if ($this->mode == 'time') {
+            return 'time';
+        }
+        elseif ($this->mode == 'date') {
+            return 'dateLong';
+        }
+        else {
+            return 'dateTimeLong';
+        }
+    }
+}