<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id: LocationTemplateBehavior.class.php 2702 2012-02-02 12:35:01Z liu21st $

/**
 +------------------------------------------------------------------------------
 * 系统行为扩展 自动定位模板文件
 +------------------------------------------------------------------------------
 */
class LocationTemplateBehavior extends Behavior {
    // 行为扩展的执行入口必须是run
    public function run(&$templateFile){
        // 自动定位模板文件
        if(!file_exists_case($templateFile))
            $templateFile   = $this->parseTemplateFile($templateFile);
    }

    /**
     +----------------------------------------------------------
     * 自动定位模板文件
     +----------------------------------------------------------
     * @access private
     +----------------------------------------------------------
     * @param string $templateFile 文件名
     +----------------------------------------------------------
     * @return string
     +----------------------------------------------------------
     * @throws ThinkExecption
     +----------------------------------------------------------
     */
    private function parseTemplateFile($templateFile) {
        if(''==$templateFile) {
            // 如果模板文件名为空 按照默认规则定位
            $templateFile = C('TEMPLATE_NAME');
        }elseif(false === strpos($templateFile,C('TMPL_TEMPLATE_SUFFIX'))){
            // 解析规则为 模板主题:模块:操作 不支持 跨项目和跨分组调用
            $path   =  explode(':',$templateFile);
            $action = array_pop($path);
            $module = !empty($path)?array_pop($path):MODULE_NAME;
            if(!empty($path)) {// 设置模板主题
                $path = dirname(THEME_PATH).'/'.array_pop($path).'/';
            }else{
                $path = THEME_PATH;
            }
            $depr = defined('GROUP_NAME')?C('TMPL_FILE_DEPR'):'/';
            $templateFile  =  $path.$module.$depr.$action.C('TMPL_TEMPLATE_SUFFIX');
        }
        if(!file_exists_case($templateFile))
            throw_exception(L('_TEMPLATE_NOT_EXIST_').'['.$templateFile.']');
        return $templateFile;
    }
}