Vendor lock

vendor/illuminate/view/Concerns/ManagesComponents.php

@@ -0,0 +1,145 @@
+<?php
+
+namespace Illuminate\View\Concerns;
+
+use Illuminate\Support\Arr;
+use Illuminate\Support\HtmlString;
+
+trait ManagesComponents
+{
+    /**
+     * The components being rendered.
+     *
+     * @var array
+     */
+    protected $componentStack = [];
+
+    /**
+     * The original data passed to the component.
+     *
+     * @var array
+     */
+    protected $componentData = [];
+
+    /**
+     * The slot contents for the component.
+     *
+     * @var array
+     */
+    protected $slots = [];
+
+    /**
+     * The names of the slots being rendered.
+     *
+     * @var array
+     */
+    protected $slotStack = [];
+
+    /**
+     * Start a component rendering process.
+     *
+     * @param  string  $name
+     * @param  array  $data
+     * @return void
+     */
+    public function startComponent($name, array $data = [])
+    {
+        if (ob_start()) {
+            $this->componentStack[] = $name;
+
+            $this->componentData[$this->currentComponent()] = $data;
+
+            $this->slots[$this->currentComponent()] = [];
+        }
+    }
+
+    /**
+     * Get the first view that actually exists from the given list, and start a component.
+     *
+     * @param  array  $names
+     * @param  array  $data
+     * @return void
+     */
+    public function startComponentFirst(array $names, array $data = [])
+    {
+        $name = Arr::first($names, function ($item) {
+            return $this->exists($item);
+        });
+
+        $this->startComponent($name, $data);
+    }
+
+    /**
+     * Render the current component.
+     *
+     * @return string
+     */
+    public function renderComponent()
+    {
+        $name = array_pop($this->componentStack);
+
+        return $this->make($name, $this->componentData($name))->render();
+    }
+
+    /**
+     * Get the data for the given component.
+     *
+     * @param  string  $name
+     * @return array
+     */
+    protected function componentData($name)
+    {
+        return array_merge(
+            $this->componentData[count($this->componentStack)],
+            ['slot' => new HtmlString(trim(ob_get_clean()))],
+            $this->slots[count($this->componentStack)]
+        );
+    }
+
+    /**
+     * Start the slot rendering process.
+     *
+     * @param  string  $name
+     * @param  string|null  $content
+     * @return void
+     */
+    public function slot($name, $content = null)
+    {
+        if (func_num_args() === 2) {
+            $this->slots[$this->currentComponent()][$name] = $content;
+        } else {
+            if (ob_start()) {
+                $this->slots[$this->currentComponent()][$name] = '';
+
+                $this->slotStack[$this->currentComponent()][] = $name;
+            }
+        }
+    }
+
+    /**
+     * Save the slot content for rendering.
+     *
+     * @return void
+     */
+    public function endSlot()
+    {
+        last($this->componentStack);
+
+        $currentSlot = array_pop(
+            $this->slotStack[$this->currentComponent()]
+        );
+
+        $this->slots[$this->currentComponent()]
+                    [$currentSlot] = new HtmlString(trim(ob_get_clean()));
+    }
+
+    /**
+     * Get the index for the current component.
+     *
+     * @return int
+     */
+    protected function currentComponent()
+    {
+        return count($this->componentStack) - 1;
+    }
+}