<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2025 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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declare(strict_types=1);
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namespace think;
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use think\contract\TemplateHandlerInterface;
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use think\helper\Arr;
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/**
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* 视图类
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* @package think
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*/
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class View extends Manager
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{
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protected $namespace = '\\think\\view\\driver\\';
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/**
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* 模板变量
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* @var array
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*/
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protected $data = [];
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/**
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* 内容过滤
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* @var mixed
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*/
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protected $filter;
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/**
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* 获取模板引擎
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* @access public
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* @param string $type 模板引擎类型
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* @return TemplateHandlerInterface
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*/
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public function engine(?string $type = null)
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{
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return $this->driver($type);
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}
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/**
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* 模板变量赋值
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* @access public
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* @param string|array $name 模板变量
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* @param mixed $value 变量值
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* @return $this
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*/
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public function assign(string|array $name, $value = null)
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{
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if (is_array($name)) {
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$this->data = array_merge($this->data, $name);
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} else {
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$this->data[$name] = $value;
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}
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return $this;
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}
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/**
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* 视图过滤
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* @access public
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* @param Callable $filter 过滤方法或闭包
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* @return $this
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*/
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public function filter(?callable $filter = null)
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{
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$this->filter = $filter;
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return $this;
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}
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/**
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* 解析和获取模板内容 用于输出
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* @access public
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* @param string $template 模板文件名或者内容
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* @param array $vars 模板变量
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* @return string
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* @throws \Exception
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*/
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public function fetch(string $template = '', array $vars = []): string
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{
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return $this->getContent(function () use ($vars, $template) {
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$this->engine()->fetch($template, array_merge($this->data, $vars));
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});
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}
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/**
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* 渲染内容输出
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* @access public
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* @param string $content 内容
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* @param array $vars 模板变量
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* @return string
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*/
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public function display(string $content, array $vars = []): string
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{
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return $this->getContent(function () use ($vars, $content) {
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$this->engine()->display($content, array_merge($this->data, $vars));
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});
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}
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/**
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* 获取模板引擎渲染内容
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* @param $callback
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* @return string
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* @throws \Exception
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*/
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protected function getContent($callback): string
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{
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// 页面缓存
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ob_start();
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ob_implicit_flush(false);
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// 渲染输出
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try {
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$callback();
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} catch (\Exception $e) {
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ob_end_clean();
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throw $e;
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}
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// 获取并清空缓存
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$content = ob_get_clean();
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if ($this->filter) {
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$content = call_user_func_array($this->filter, [$content]);
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}
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return $content;
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}
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/**
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* 模板变量赋值
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* @access public
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* @param string $name 变量名
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* @param mixed $value 变量值
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*/
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public function __set($name, $value)
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{
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$this->data[$name] = $value;
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}
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/**
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* 取得模板显示变量的值
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* @access protected
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* @param string $name 模板变量
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* @return mixed
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*/
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public function __get($name)
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{
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return $this->data[$name];
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}
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/**
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* 检测模板变量是否设置
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* @access public
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* @param string $name 模板变量名
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* @return bool
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*/
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public function __isset($name)
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{
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return isset($this->data[$name]);
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}
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protected function resolveConfig(string $name)
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{
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$config = $this->app->config->get('view', []);
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Arr::forget($config, 'type');
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return $config;
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}
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/**
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* 默认驱动
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* @return string|null
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*/
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public function getDefaultDriver()
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{
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return $this->app->config->get('view.type', 'php');
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}
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}
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