Yiisoft\Yii\Widgets\Menu

Complexity

Total Complexity

47

Size/Duplication

Total Lines	406
Duplicated Lines	0 %

Test Coverage

Coverage

67.83%

Importance

Changes	1
Bugs	0	Features	0

18 Methods

Rating	Name	Duplication	Size	Complexity
A	linkTemplate()	0	5	1
B	renderItems()	0	37	8
A	labelTemplate()	0	5	1
A	renderItem()	0	15	2
A	lastItemCssClass()	0	5	1
A	activateParents()	0	5	1
A	activeCssClass()	0	5	1
C	normalizeItems()	0	50	17
A	activateItems()	0	5	1
A	currentPath()	0	5	1
A	hideEmptyItems()	0	5	1
A	options()	0	5	1
A	itemOptions()	0	5	1
A	run()	0	12	2
A	isItemActive()	0	12	5
A	encodeLabels()	0	5	1
A	firstItemCssClass()	0	5	1
A	items()	0	5	1

<?php

declare(strict_types=1);

namespace Yiisoft\Yii\Widgets;

use Closure;
use JsonException;
use Yiisoft\Arrays\ArrayHelper;
use Yiisoft\Html\Html;
use Yiisoft\Widget\Widget;

use function array_merge;
use function array_values;
use function call_user_func;
use function count;
use function implode;
use function strtr;

/**
 * Menu displays a multi-level menu using nested HTML lists.
 *
 * The main property of Menu is {@see items}, which specifies the possible items in the menu. A menu item can contain
 * sub-items which specify the sub-menu under that menu item.
 *
 * Menu checks the current route and request parameters to toggle certain menu items with active state.
 *
 * Note that Menu only renders the HTML tags about the menu. It does not do any styling. You are responsible to provide
 * CSS styles to make it look like a real menu.
 *
 * The following example shows how to use Menu:
 *
 * ```php
 * echo Menu::Widget()
 *     ->items([
 *         ['label' => 'Login', 'url' => 'site/login', 'visible' => true],
 *     ]);
 * ```
 */
final class Menu extends Widget
{
    /**
     * @var string the template used to render a list of sub-menus.
     *
     * In this template, the token `{items}` will be replaced with the rendered sub-menu items.
     */
    private string $submenuTemplate = "\n<ul>\n{items}\n</ul>\n";
    private array $items = [];
    private array $itemOptions = [];
    private string $linkTemplate = '<a href="{url}">{label}</a>';
    private string $labelTemplate = '{label}';
    private bool $encodeLabels = true;
    private string $activeCssClass = 'active';
    private bool $activateItems = true;
    private bool $activateParents = false;
    private ?string $currentPath = null;
    private bool $hideEmptyItems = true;
    private array $options = [];
    private ?string $firstItemCssClass = null;
    private ?string $lastItemCssClass = null;

    /**
     * Renders the menu.
     *
     * @throws JsonException
     *
     * @return string the result of Widget execution to be outputted.
     */
    public function run(): string
    {
        $items = $this->normalizeItems($this->items, $hasActiveChild);

        if (empty($items)) {
            return '';
        }

        $options = $this->options;
        $tag = ArrayHelper::remove($options, 'tag', 'ul');

        return Html::tag($tag, $this->renderItems($items), $options);
    }

    /**
     * @param bool $value whether to automatically activate items according to whether their route setting matches the
     * currently requested route.
     *
     * @return $this
     */
    public function activateItems(bool $value): self
    {
        $this->activateItems = $value;

        return $this;
    }

    /**
     * @param bool $value whether to activate parent menu items when one of the corresponding child menu items is
     * active. The activated parent menu items will also have its CSS classes appended with {@see activeCssClass}.
     *
     * @return $this
     */
    public function activateParents(bool $value): self
    {
        $this->activateParents = $value;

        return $this;
    }

    /**
     * @param string $value the CSS class to be appended to the active menu item.
     *
     * @return $this
     */
    public function activeCssClass(string $value): self
    {
        $this->activeCssClass = $value;

        return $this;
    }

    /**
     * @param string|null $value allows you to assign the current path of the url from request controller.
     *
     * @return $this
     */
    public function currentPath(?string $value): self
    {
        $this->currentPath = $value;

        return $this;
    }

    /**
     * @param bool $value whether the labels for menu items should be HTML-encoded.
     *
     * @return $this
     */
    public function encodeLabels(bool $value): self
    {
        $this->encodeLabels = $value;

        return $this;
    }

    /**
     * @param string|null the CSS class that will be assigned to the first item in the main menu or each submenu.

The type Yiisoft\Yii\Widgets\the was not found. Maybe you did not declare it correctly or list all dependencies?

     * Defaults to null, meaning no such CSS class will be assigned.
     *
     * @return $this
     */
    public function firstItemCssClass(?string $value): self
    {
        $this->firstItemCssClass = $value;

        return $this;
    }

    /**
     * @param bool $value whether to hide empty menu items. An empty menu item is one whose `url` option is not set and
     * which has no visible child menu items.
     *
     * @return $this
     */
    public function hideEmptyItems(bool $value): self
    {
        $this->hideEmptyItems = $value;

        return $this;
    }

    /**
     * @param array $value list of menu items. Each menu item should be an array of the following structure:
     *
     * - label: string, optional, specifies the menu item label. When {@see encodeLabels} is true, the label will be
     *   HTML-encoded. If the label is not specified, an empty string will be used.
     * - encode: bool, optional, whether this item`s label should be HTML-encoded. This param will override global
     *   {@see encodeLabels} param.
     * - url: string or array, optional, specifies the URL of the menu item. When this is set, the actual menu item
     *   content will be generated using {@see linkTemplate}; otherwise, {@see labelTemplate} will be used.
     * - visible: bool, optional, whether this menu item is visible. Defaults to true.
     * - items: array, optional, specifies the sub-menu items. Its format is the same as the parent items.
     * - active: bool or Closure, optional, whether this menu item is in active state (currently selected). When
     *   using a closure, its signature should be `function ($item, $hasActiveChild, $isItemActive, $Widget)`. Closure
     *   must return `true` if item should be marked as `active`, otherwise - `false`. If a menu item is active, its CSS
     *   class will be appended with {@see activeCssClass}. If this option is not set, the menu item will be set active
     *   automatically when the current request is triggered by `url`. For more details, please refer to
     *   {@see isItemActive()}.
     * - template: string, optional, the template used to render the content of this menu item. The token `{url}` will
     *   be replaced by the URL associated with this menu item, and the token `{label}` will be replaced by the label
     *   of the menu item. If this option is not set, {@see linkTemplate} or {@see labelTemplate} will be used instead.
     * - submenuTemplate: string, optional, the template used to render the list of sub-menus. The token `{items}` will
     *   be replaced with the rendered sub-menu items. If this option is not set, {@see submenuTemplate} will be used
     *   instead.
     * - options: array, optional, the HTML attributes for the menu container tag.
     *
     * @return $this
     */
    public function items(array $value): self
    {
        $this->items = $value;

        return $this;
    }

    /**
     * @param array $value list of HTML attributes shared by all menu {@see items}. If any individual menu item
     * specifies its `options`, it will be merged with this property before being used to generate the HTML attributes
     * for the menu item tag. The following special options are recognized:
     *
     * - tag: string, defaults to "li", the tag name of the item container tags. Set to false to disable container tag.
     *   See also {@see \Yiisoft\Html\Html::tag()}
     *
     * @return $this
     *
     * {@see \Yiisoft\Html\Html::renderTagAttributes() for details on how attributes are being rendered}
     */
    public function itemOptions(array $value): self
    {
        $this->itemOptions = $value;

        return $this;
    }

    /**
     * @param string $value the template used to render the body of a menu which is NOT a link.
     *
     * In this template, the token `{label}` will be replaced with the label of the menu item.
     *
     * This property will be overridden by the `template` option set in individual menu items via {@see items}.
     *
     * @return $this
     */
    public function labelTemplate(string $value): self
    {
        $this->labelTemplate = $value;

        return $this;
    }

    /**
     * @param string|null $value the CSS class that will be assigned to the last item in the main menu or each submenu.
     * Defaults to null, meaning no such CSS class will be assigned.
     *
     * @return $this
     */
    public function lastItemCssClass(?string $value): self
    {
        $this->lastItemCssClass = $value;

        return $this;
    }

    /**
     * @param string $value the template used to render the body of a menu which is a link. In this template, the token
     * `{url}` will be replaced with the corresponding link URL; while `{label}` will be replaced with the link text.
     *
     * This property will be overridden by the `template` option set in individual menu items via {@see items}.
     *
     * @return $this
     */
    public function linkTemplate(string $value): self
    {
        $this->linkTemplate = $value;

        return $this;
    }

    /**
     * @param array $value the HTML attributes for the menu's container tag. The following special options are
     * recognized:
     *
     * - tag: string, defaults to "ul", the tag name of the item container tags. Set to false to disable container tag.
     *   See also {@see \Yiisoft\Html\Html::tag()}.
     *
     * @return $this
     *
     * {@see \Yiisoft\Html\Html::renderTagAttributes()} for details on how attributes are being rendered.
     */
    public function options(array $value): self
    {
        $this->options = $value;

        return $this;
    }

    /**
     * Recursively renders the menu items (without the container tag).
     *
     * @param array $items the menu items to be rendered recursively
     *
     * @throws JsonException
     *
     * @return string the rendering result
     */
    protected function renderItems(array $items): string
    {
        $n = count($items);
        $lines = [];

        foreach ($items as $i => $item) {
            $options = array_merge($this->itemOptions, ArrayHelper::getValue($item, 'options', []));
            $tag = ArrayHelper::remove($options, 'tag', 'li');
            $class = [];

            if ($item['active']) {
                $class[] = $this->activeCssClass;
            }

            if ($i === 0 && $this->firstItemCssClass !== null) {
                $class[] = $this->firstItemCssClass;
            }

            if ($i === $n - 1 && $this->lastItemCssClass !== null) {
                $class[] = $this->lastItemCssClass;
            }

            Html::addCssClass($options, $class);

            $menu = $this->renderItem($item);

It seems like $item can also be of type object; however, parameter $item of Yiisoft\Yii\Widgets\Menu::renderItem() does only seem to accept array, maybe add an additional type check?

            if (!empty($item['items'])) {
                $submenuTemplate = ArrayHelper::getValue($item, 'submenuTemplate', $this->submenuTemplate);
                $menu .= strtr($submenuTemplate, [
                    '{items}' => $this->renderItems($item['items']),
                ]);
            }

            $lines[] = Html::tag($tag, $menu, $options);
        }

        return implode("\n", $lines);
    }

    /**
     * Renders the content of a menu item.
     *
     * Note that the container and the sub-menus are not rendered here.
     *
     * @param array $item the menu item to be rendered. Please refer to {@see items} to see what data might be in the
     * item.
     *
     * @return string the rendering result
     */
    protected function renderItem(array $item): string
    {
        if (isset($item['url'])) {
            $template = ArrayHelper::getValue($item, 'template', $this->linkTemplate);

            return strtr($template, [
                '{url}'   => Html::encode($item['url']),
                '{label}' => $item['label'],
            ]);
        }

        $template = ArrayHelper::getValue($item, 'template', $this->labelTemplate);

        return strtr($template, [
            '{label}' => $item['label'],
        ]);
    }

    /**
     * Normalizes the {@see items} property to remove invisible items and activate certain items.
     *
     * @param array $items  the items to be normalized.
     * @param bool|null $active whether there is an active child menu item.
     *
     * @return array the normalized menu items
     */
    protected function normalizeItems(array $items, ?bool &$active): array
    {
        foreach ($items as $i => $item) {
            if (isset($item['visible']) && !$item['visible']) {
                unset($items[$i]);
                continue;
            }

            if (!isset($item['label'])) {
                $item['label'] = '';
            }

            $encodeLabel = $item['encode'] ?? $this->encodeLabels;
            $items[$i]['label'] = $encodeLabel ? Html::encode($item['label']) : $item['label'];
            $hasActiveChild = false;

            if (isset($item['items'])) {
                $items[$i]['items'] = $this->normalizeItems($item['items'], $hasActiveChild);
                if (empty($items[$i]['items']) && $this->hideEmptyItems) {
                    unset($items[$i]['items']);
                    if (!isset($item['url'])) {
                        unset($items[$i]);
                        continue;
                    }
                }
            }

            if (!isset($item['active'])) {
                if (
                    ($this->activateParents && $hasActiveChild)
                    || ($this->activateItems && $this->isItemActive($item))
                ) {
                    $active = $items[$i]['active'] = true;
                } else {
                    $items[$i]['active'] = false;
                }
            } elseif ($item['active'] instanceof Closure) {
                $active = $items[$i]['active'] = call_user_func(
                    $item['active'],
                    $item,
                    $hasActiveChild,
                    $this->isItemActive($item),
                    $this
                );
            } elseif ($item['active']) {
                $active = true;
            }
        }

        return array_values($items);
    }

    /**
     * Checks whether a menu item is active.
     *
     * This is done by checking match that specified in the `url` option of the menu item.
     *
     * Only when 'url' match $_SERVER['REQUEST_URI'] respectively, will a menu item be considered active.
     *
     * @param array $item the menu item to be checked
     * @param bool $active returns the result when the item is active
     *
     * @return bool whether the menu item is active
     */
    protected function isItemActive(array $item, bool $active = false): bool
    {
        if (
            $this->activateItems
            && $this->currentPath !== '/'
            && isset($item['url'])
            && $item['url'] === $this->currentPath
        ) {
            $active = true;
        }

        return $active;
    }
}