mirror of
https://gitee.com/fastadminnet/framework.git
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262 lines
8.8 KiB
PHP
262 lines
8.8 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | TOPThink [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2011 http://topthink.com 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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use think\Exception;
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class View {
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protected $engine = null; // 模板引擎实例
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protected $theme = ''; // 模板主题名称
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protected $data = []; // 模板变量
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protected $config = [ // 视图参数
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'http_output_content' => true,
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'http_content_type' => 'text/html',
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'http_charset' => 'utf-8',
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'http_cache_control' => 'private',
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'http_render_content' => false,
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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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'engine_type' => 'think',
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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, $value = ''){
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if(is_array($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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}
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/**
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* 视图参数设置
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* @access public
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* @param mixed $name
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* @param mixed $value
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*/
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public function __set($name, $value = ''){
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$this->config[$name] = $value;
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}
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public function __construct(array $config = []){
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$this->config = array_merge($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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* 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 $config = []){
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$class = '\\Think\\View\\Driver\\' . ucwords($engine);
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$this->engine = new $class($config);
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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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if(true === $theme) { // 自动侦测
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$this->config['theme_on'] = true;
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$this->config['auto_detect_theme'] = true;
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}elseif(false === $theme){ // 关闭主题
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$this->config['theme_on'] = false;
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}else{ // 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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* 加载模板和页面输出 可以返回输出内容
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* @access public
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* @param string $template 模板文件名
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* @param array $vars 模板输出变量
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* @param string $cache_id 模板缓存标识
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* @return mixed
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*/
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public function display($template = '', $vars = [], $cache_id = '') {
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Hook::listen('view_begin', $template);
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// 解析并获取模板内容
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$content = $this->fetch($template, $vars, $cache_id);
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// 输出内容过滤
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Hook::listen('view_filter', $content);
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// 输出模板内容
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if($this->config['http_output_content']) {
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$this->render($content);
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}else{ // 返回解析后的内容
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return $content;
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}
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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 protected
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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 string $cache_id 模板缓存标识
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* @return string
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*/
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protected function fetch($template, $vars = [], $cache_id='') {
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if(!$this->config['http_render_content']) {
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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:' . $template);
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}
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}
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$vars = $vars ? $vars : $this->data;
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// 页面缓存
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ob_start();
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ob_implicit_flush(0);
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if($this->engine) { // 指定模板引擎
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$this->engine->fetch($template, $vars, $cache_id);
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}else{ // 原生PHP解析
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extract($vars, EXTR_OVERWRITE);
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is_file($template) ? include $template : eval('?>' . $template);
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}
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// 获取并清空缓存
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return ob_get_clean();
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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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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($template,'@')){ // 跨模块调用模版文件
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list($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') or 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.$this->config['view_suffix'];
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}
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/**
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* 获取当前的模板主题
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* @access private
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* @return string
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*/
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private function getTemplateTheme($module) {
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if($this->config['theme_on']) {
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if($this->theme) { // 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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// 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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* 视图输出参数设置
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* @access public
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* @param mixed $config
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* @param mixed $value
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*/
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public function http($config = [], $value = ''){
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if(is_array($config)) {
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$this->config = array_merge($this->config, $config);
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}else{
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$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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* 输出内容文本可以包括Html
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* @access private
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* @param string $content 输出内容
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* @param string $charset 模板输出字符集
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* @param string $contentType 输出类型
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* @return mixed
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*/
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private function render($content){
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// 网页字符编码
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header('Content-Type:' . $this->config['http_content_type'] . '; charset=' . $this->config['http_charset']);
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header('Cache-control:' . $this->config['http_cache_control']); // 页面缓存控制
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header('X-Powered-By:ThinkPHP');
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// 输出模板文件
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echo $content;
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}
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}
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