mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
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148 lines
3.7 KiB
PHP
148 lines
3.7 KiB
PHP
<?php
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/**
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* PHP 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @since CakePHP(tm) v2.1
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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/**
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* ViewBlock implements the concept of Blocks or Slots in the View layer.
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* Slots or blocks are combined with extending views and layouts to afford slots
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* of content that are present in a layout or parent view, but are defined by the child
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* view or elements used in the view.
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*
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* @package Cake.View
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*/
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class ViewBlock {
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/**
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* Block content. An array of blocks indexed by name.
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*
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* @var array
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*/
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protected $_blocks = array();
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/**
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* The active blocks being captured.
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*
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* @var array
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*/
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protected $_active = array();
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/**
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* Start capturing output for a 'block'
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*
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* Blocks allow you to create slots or blocks of dynamic content in the layout.
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* view files can implement some or all of a layout's slots.
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*
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* You can end capturing blocks using View::end(). Blocks can be output
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* using View::get();
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*
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* @param string $name The name of the block to capture for.
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* @return void
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*/
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public function start($name) {
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$this->_active[] = $name;
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ob_start();
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}
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/**
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* End a capturing block. The compliment to ViewBlock::start()
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*
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* @return void
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* @see ViewBlock::start()
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*/
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public function end() {
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if (!empty($this->_active)) {
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$active = end($this->_active);
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$content = ob_get_clean();
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if (!isset($this->_blocks[$active])) {
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$this->_blocks[$active] = '';
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}
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$this->_blocks[$active] .= $content;
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array_pop($this->_active);
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}
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}
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/**
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* Append to an existing or new block. Appending to a new
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* block will create the block.
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*
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* Calling append() without a value will create a new capturing
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* block that needs to be finished with View::end(). The content
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* of the new capturing context will be added to the existing block context.
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*
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* @param string $name Name of the block
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* @param string $value The content for the block.
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* @return void
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* @throws CakeException when you use non-string values.
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*/
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public function append($name, $value = null) {
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if (isset($value)) {
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if (!is_string($value)) {
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throw new CakeException(__d('cake_dev', '$value must be a string.'));
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}
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if (!isset($this->_blocks[$name])) {
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$this->_blocks[$name] = '';
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}
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$this->_blocks[$name] .= $value;
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} else {
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$this->start($name);
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}
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}
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/**
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* Set the content for a block. This will overwrite any
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* existing content.
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*
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* @param string $name Name of the block
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* @param string $value The content for the block.
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* @return void
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* @throws CakeException when you use non-string values.
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*/
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public function set($name, $value) {
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if (!is_string($value)) {
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throw new CakeException(__d('cake_dev', 'Blocks can only contain strings.'));
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}
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$this->_blocks[$name] = $value;
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}
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/**
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* Get the content for a block.
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*
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* @param string $name Name of the block
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* @return The block content or '' if the block does not exist.
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*/
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public function get($name) {
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if (!isset($this->_blocks[$name])) {
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return '';
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}
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return $this->_blocks[$name];
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}
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/**
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* Get the names of all the existing blocks.
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*
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* @return array An array containing the blocks.
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*/
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public function keys() {
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return array_keys($this->_blocks);
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}
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/**
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* Get the name of the currently open block.
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*
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* @return mixed Either null or the name of the last open block.
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*/
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public function active() {
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return end($this->_active);
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}
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}
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