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317 lines
9.5 KiB
PHP
317 lines
9.5 KiB
PHP
<?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) 2006~2015 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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namespace think;
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class View
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{
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// 视图实例
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protected static $instance = null;
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// 模板引擎实例
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protected $engine = null;
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// 模板主题名称
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protected $theme = '';
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// 模板变量
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protected $data = [];
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// 视图参数
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protected $config = [
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'theme_on' => false,
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'auto_detect_theme' => false,
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'var_theme' => 't',
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'default_theme' => 'default',
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'http_cache_id' => null,
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'view_path' => '',
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'view_suffix' => '.html',
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'view_depr' => '/',
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'view_layer' => VIEW_LAYER,
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'parse_str' => [],
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'engine_type' => 'think',
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'parse_var' => false,
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'namespace' => '\\think\\view\\driver\\',
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];
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public function __construct(array $config = [])
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{
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$this->config($config);
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$this->engine($this->config['engine_type']);
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}
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/**
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* 初始化视图
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* @access public
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* @param array $config 配置参数
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*/
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public static function instance(array $config = [])
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{
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if (is_null(self::$instance)) {
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self::$instance = new self($config);
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}
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return self::$instance;
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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 mixed $name 变量名
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* @param mixed $value 变量值
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*/
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public function assign($name, $value = '')
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{
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if (is_array($name)) {
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$this->data = array_merge($this->data, $name);
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return $this;
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} else {
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$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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* 设置视图参数
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* @access public
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* @param mixed $config 视图参数或者数组
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* @param string $value 值
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* @return View
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*/
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public function config($config = '', $value = '')
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{
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if (is_array($config)) {
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foreach ($this->config as $key => $val) {
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if (isset($config[$key])) {
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$this->config[$key] = $config[$key];
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}
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}
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} else {
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$this->config[$config] = $value;
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}
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return $this;
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}
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/**
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* 设置当前模板解析的引擎
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* @access public
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* @param string $engine 引擎名称
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* @param array $config 引擎参数
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* @return View
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*/
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public function engine($engine, array $config = [])
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{
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if ('php' == $engine) {
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$this->engine = 'php';
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} else {
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$class = $this->config['namespace'] . ucwords($engine);
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$this->engine = new $class($config);
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}
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return $this;
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}
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/**
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* 设置当前输出的模板主题
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* @access public
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* @param mixed $theme 主题名称
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* @return View
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*/
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public function theme($theme)
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{
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if (true === $theme) {
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// 自动侦测
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$this->config['theme_on'] = true;
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$this->config['auto_detect_theme'] = true;
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} elseif (false === $theme) {
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// 关闭主题
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$this->config['theme_on'] = false;
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} else {
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// 指定模板主题
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$this->config['theme_on'] = true;
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$this->theme = $theme;
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}
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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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*
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* @param string $template 模板文件名或者内容
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* @param array $vars 模板输出变量
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* @param array $cache 模板缓存参数
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* @param bool $renderContent 是否渲染内容
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*
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* @return string
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* @throws Exception
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*/
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public function fetch($template = '', $vars = [], $cache = [], $renderContent = false)
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{
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if (!$renderContent) {
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// 获取模板文件名
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$template = $this->parseTemplate($template);
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// 模板不存在 抛出异常
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if (!is_file($template)) {
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throw new Exception('template file not exists:' . $template, 10700);
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}
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}
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$vars = $vars ? $vars : $this->data;
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// 页面缓存
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ob_start();
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ob_implicit_flush(0);
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if ('php' == $this->engine || empty($this->engine)) {
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// 原生PHP解析
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extract($vars, EXTR_OVERWRITE);
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is_file($template) ? include $template : eval('?>' . $template);
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} else {
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// 指定模板引擎
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$this->engine->fetch($template, $vars, $cache);
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}
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// 获取并清空缓存
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$content = ob_get_clean();
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// 允许用户自定义模板的字符串替换
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if (!empty($this->config['parse_str'])) {
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$replace = $this->config['parse_str'];
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$content = str_replace(array_keys($replace), array_values($replace), $content);
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}
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if (APP_DEBUG && $this->config['parse_var']) {
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// debug模式时，将后台分配变量输出到浏览器控制台
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$parseVar = empty($vars) ? json_encode([]) : json_encode($vars);
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$content .= '<script type="text/javascript">var __VAR__ = ' . $parseVar . ';</script>';
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}
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return $content;
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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 $vars 模板输出变量
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* @return mixed
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*/
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public function show($content, $vars = [])
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{
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return $this->fetch($content, $vars, '', true);
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}
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/**
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* 自动定位模板文件
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* @access private
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* @param string $template 模板文件规则
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* @return string
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*/
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private function parseTemplate($template)
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{
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if (is_file($template)) {
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return $template;
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}
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$depr = $this->config['view_depr'];
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$template = str_replace(':', $depr, $template);
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// 获取当前模块
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$module = MODULE_NAME;
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if (strpos($template, '@')) {
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// 跨模块调用模版文件
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list($module, $template) = explode('@', $template);
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}
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// 获取当前主题的模版路径
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defined('THEME_PATH') || define('THEME_PATH', $this->getThemePath($module));
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// 分析模板文件规则
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if ('' == $template) {
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// 如果模板文件名为空 按照默认规则定位
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$template = CONTROLLER_NAME . $depr . ACTION_NAME;
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} elseif (false === strpos($template, $depr)) {
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$template = CONTROLLER_NAME . $depr . $template;
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}
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return THEME_PATH . $template . $this->config['view_suffix'];
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}
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/**
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* 获取当前的模板主题
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* @access private
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* @param string $module 模块名
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* @return string
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*/
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private function getTemplateTheme($module)
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{
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if ($this->config['theme_on']) {
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if ($this->theme) {
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// 指定模板主题
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$theme = $this->theme;
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} elseif ($this->config['auto_detect_theme']) {
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// 自动侦测模板主题
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$t = $this->config['var_theme'];
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if (isset($_GET[$t])) {
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$theme = $_GET[$t];
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} elseif (Cookie::get('think_theme')) {
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$theme = Cookie::get('think_theme');
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}
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if (!is_dir(APP_PATH . $module . '/' . $this->config['view_layer'] . '/' . $theme)) {
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$theme = $this->config['default_theme'];
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}
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Cookie::set('think_theme', $theme, 864000);
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} else {
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$theme = $this->config['default_theme'];
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}
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return $theme . '/';
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}
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return '';
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}
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/**
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* 获取当前的模板路径
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* @access protected
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* @param string $module 模块名
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* @return string
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*/
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protected function getThemePath($module = MODULE_NAME)
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{
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// 获取当前主题名称
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$theme = $this->getTemplateTheme($module);
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// 获取当前主题的模版路径
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$tmplPath = $this->config['view_path']; // 模块设置独立的视图目录
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if (!$tmplPath) {
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// 定义TMPL_PATH 则改变全局的视图目录到模块之外
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$tmplPath = defined('TMPL_PATH') ? TMPL_PATH . $module . '/' : APP_PATH . $module . '/' . $this->config['view_layer'] . '/';
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}
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return $tmplPath . $theme;
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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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}
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