1:  2:  3:  4:  5:  6:  7:  8:  9: 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: 21: 22: 23: 24: 25: 26: 27: 28: 29: 30: 31: 32: 33: 34: 35: 36: 37: 38: 39: 40: 41: 42: 43: 44: 45: 46: 47: 48: 49: 50: 51: 52: 53: 54: 55: 56: 57: 58: 59: 60: 61: 62: 63: 64: 65: 66: 67: 68: 69: 70: 71: 72: 73: 74: 75: 76: 77: 78: 79: 80: 81: 82: 83: 84: 85: 86: 87: 88: 89: 90: 91: 92: 

<?php

/**
 * MvcCore
 *
 * This source file is subject to the BSD 3 License
 * For the full copyright and license information, please view
 * the LICENSE.md file that are distributed with this source code.
 *
 * @copyright   Copyright (c) 2016 Tom Flidr (https://github.com/mvccore)
 * @license  https://mvccore.github.io/docs/mvccore/5.0.0/LICENCE.md
 */

namespace MvcCore\View;

trait LocalMethods {

    /**
     * If relative path declared in view starts with `"./anything/else.phtml"`,
     * then change relative path to correct `"./"` context and return full path.
     * @param string $typePath
     * @param string $relativePath
     * @return string full path
     */
    protected function correctRelativePath ($typePath, $relativePath) {
        /** @var $this \MvcCore\View */
        $result = str_replace('\\', '/', $relativePath);
        // if relative path starts with dot:
        if (mb_substr($relativePath, 0, 1) === '.') {
            if (self::$_viewScriptsFullPathBase === NULL)
                self::initViewScriptsFullPathBase();
            $typedViewDirFullPath = implode('/', [
                self::$_viewScriptsFullPathBase, $typePath
            ]);
            // get current view script full path:
            $renderedFullPaths = & $this->__protected['renderedFullPaths'];
            $lastRenderedFullPath = $renderedFullPaths[count($renderedFullPaths) - 1];
            // create `$renderedRelPath` by cutting directory with typed view scripts:
            $renderedRelPath = mb_substr($lastRenderedFullPath, mb_strlen($typedViewDirFullPath));
            // set how many dots is at `$relativePath` string start:
            $startingDotsCount = mb_substr($relativePath, 1, 1) === '.' ? 2 : 1;
            // cut so many slash steps from `$renderedRelPath` start, 
            // how many dots is at the `$relativePath` string start:
            $slashSteps = 0;
            while ($slashSteps++ < $startingDotsCount) {
                $renderedRelPathLastSlashPos = mb_strrpos($renderedRelPath, '/');
                if ($renderedRelPathLastSlashPos !== FALSE) 
                    $renderedRelPath = mb_substr($renderedRelPath, 0, $renderedRelPathLastSlashPos);
            }
            // trim relative path for starting dots:
            $relativePath = mb_substr($relativePath, $startingDotsCount);
            // complete result from corected relative path and given path:
            $result = ltrim($renderedRelPath . $relativePath, '/');
        }
        return $result;
    }

    /**
     * Init view scripts full class string for methods:
     * - `\MvcCore\View::GetViewScriptFullPath();`
     * - `\MvcCore\View::correctRelativePath();`
     * @return void
     */
    protected static function initViewScriptsFullPathBase () {
        $app = \MvcCore\Application::GetInstance();
        self::$_viewScriptsFullPathBase = implode('/', [
            $app->GetRequest()->GetAppRoot(),
            $app->GetAppDir(),
            $app->GetViewsDir()
        ]);
    }

    /**
     * Static initialization to complete
     * `static::$helpersNamespaces`
     * by application configuration once.
     * @return void
     */
    protected static function initHelpersNamespaces () {
        $app = \MvcCore\Application::GetInstance();
        static::$helpersNamespaces = [
            '\\MvcCore\\Ext\\Views\Helpers\\',
            // and '\App\Views\Helpers\' by default:
            '\\' . implode('\\', [
                $app->GetAppDir(),
                $app->GetViewsDir(),
                static::$helpersDir
            ]) . '\\',
        ];
    }
}