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<?php |
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/** |
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* Inheritance Runtime Methods processBlock, endChild, init |
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* |
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* @package Smarty |
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* @subpackage PluginsInternal |
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* @author Uwe Tews |
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**/ |
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class Smarty_Internal_Runtime_Inheritance |
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{ |
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/** |
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* State machine |
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* - 0 idle next extends will create a new inheritance tree |
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* - 1 processing child template |
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* - 2 wait for next inheritance template |
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* - 3 assume parent template, if child will loaded goto state 1 |
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* a call to a sub template resets the state to 0 |
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* |
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* @var int |
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*/ |
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public $state = 0; |
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/** |
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* Array of root child {block} objects |
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* |
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* @var Smarty_Internal_Block[] |
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*/ |
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public $childRoot = array(); |
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/** |
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* inheritance template nesting level |
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* |
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* @var int |
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*/ |
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public $inheritanceLevel = 0; |
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/** |
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* inheritance template index |
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* |
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* @var int |
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*/ |
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public $tplIndex = -1; |
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/** |
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* Array of template source objects |
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* |
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* @var Smarty_Template_Source[] |
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*/ |
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public $sources = array(); |
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/** |
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* Stack of source objects while executing block code |
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* |
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* @var Smarty_Template_Source[] |
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*/ |
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public $sourceStack = array(); |
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/** |
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* Initialize inheritance |
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* |
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* @param \Smarty_Internal_Template $tpl template object of caller |
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* @param bool $initChild if true init for child template |
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* @param array $blockNames outer level block name |
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*/ |
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public function init(Smarty_Internal_Template $tpl, $initChild, $blockNames = array()) |
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{ |
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// if called while executing parent template it must be a sub-template with new inheritance root |
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if ($initChild && $this->state === 3 && (strpos($tpl->template_resource, 'extendsall') === false)) { |
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$tpl->inheritance = new Smarty_Internal_Runtime_Inheritance(); |
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$tpl->inheritance->init($tpl, $initChild, $blockNames); |
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return; |
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} |
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++$this->tplIndex; |
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$this->sources[ $this->tplIndex ] = $tpl->source; |
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// start of child sub template(s) |
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if ($initChild) { |
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$this->state = 1; |
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if (!$this->inheritanceLevel) { |
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//grab any output of child templates |
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ob_start(); |
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} |
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++$this->inheritanceLevel; |
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// $tpl->startRenderCallbacks[ 'inheritance' ] = array($this, 'subTemplateStart'); |
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// $tpl->endRenderCallbacks[ 'inheritance' ] = array($this, 'subTemplateEnd'); |
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} |
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// if state was waiting for parent change state to parent |
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if ($this->state === 2) { |
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$this->state = 3; |
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} |
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} |
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/** |
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* End of child template(s) |
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* - if outer level is reached flush output buffer and switch to wait for parent template state |
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* |
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* @param \Smarty_Internal_Template $tpl |
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* @param null|string $template optional name of inheritance parent template |
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* @param null|string $uid uid of inline template |
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* @param null|string $func function call name of inline template |
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* |
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* @throws \Exception |
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* @throws \SmartyException |
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*/ |
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public function endChild(Smarty_Internal_Template $tpl, $template = null, $uid = null, $func = null) |
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{ |
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--$this->inheritanceLevel; |
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if (!$this->inheritanceLevel) { |
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ob_end_clean(); |
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$this->state = 2; |
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} |
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if (isset($template) && (($tpl->parent->_isTplObj() && $tpl->parent->source->type !== 'extends') |
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|| $tpl->smarty->extends_recursion) |
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) { |
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$tpl->_subTemplateRender( |
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$template, |
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$tpl->cache_id, |
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$tpl->compile_id, |
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$tpl->caching ? 9999 : 0, |
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$tpl->cache_lifetime, |
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array(), |
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2, |
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false, |
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$uid, |
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$func |
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); |
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} |
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} |
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/** |
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* Smarty_Internal_Block constructor. |
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* - if outer level {block} of child template ($state === 1) save it as child root block |
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* - otherwise process inheritance and render |
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* |
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* @param \Smarty_Internal_Template $tpl |
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* @param $className |
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* @param string $name |
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* @param int|null $tplIndex index of outer level {block} if nested |
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* |
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* @throws \SmartyException |
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*/ |
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public function instanceBlock(Smarty_Internal_Template $tpl, $className, $name, $tplIndex = null) |
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{ |
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$block = new $className($name, isset($tplIndex) ? $tplIndex : $this->tplIndex); |
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if (isset($this->childRoot[ $name ])) { |
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$block->child = $this->childRoot[ $name ]; |
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} |
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if ($this->state === 1) { |
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$this->childRoot[ $name ] = $block; |
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return; |
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} |
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// make sure we got child block of child template of current block |
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while ($block->child && $block->child->child && $block->tplIndex <= $block->child->tplIndex) { |
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$block->child = $block->child->child; |
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} |
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$this->process($tpl, $block); |
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} |
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/** |
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* Goto child block or render this |
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* |
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* @param \Smarty_Internal_Template $tpl |
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* @param \Smarty_Internal_Block $block |
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* @param \Smarty_Internal_Block|null $parent |
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* |
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* @throws \SmartyException |
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*/ |
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public function process( |
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Smarty_Internal_Template $tpl, |
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Smarty_Internal_Block $block, |
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?Smarty_Internal_Block $parent = null |
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) { |
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if ($block->hide && !isset($block->child)) { |
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return; |
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} |
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if (isset($block->child) && $block->child->hide && !isset($block->child->child)) { |
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$block->child = null; |
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} |
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$block->parent = $parent; |
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if ($block->append && !$block->prepend && isset($parent)) { |
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$this->callParent($tpl, $block, '\'{block append}\''); |
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} |
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if ($block->callsChild || !isset($block->child) || ($block->child->hide && !isset($block->child->child))) { |
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$this->callBlock($block, $tpl); |
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} else { |
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$this->process($tpl, $block->child, $block); |
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} |
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if ($block->prepend && isset($parent)) { |
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$this->callParent($tpl, $block, '{block prepend}'); |
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if ($block->append) { |
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if ($block->callsChild || !isset($block->child) |
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|| ($block->child->hide && !isset($block->child->child)) |
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) { |
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$this->callBlock($block, $tpl); |
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} else { |
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$this->process($tpl, $block->child, $block); |
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} |
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} |
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} |
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$block->parent = null; |
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} |
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/** |
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* Render child on \$smarty.block.child |
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* |
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* @param \Smarty_Internal_Template $tpl |
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* @param \Smarty_Internal_Block $block |
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* |
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* @return null|string block content |
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* @throws \SmartyException |
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*/ |
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public function callChild(Smarty_Internal_Template $tpl, Smarty_Internal_Block $block) |
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{ |
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if (isset($block->child)) { |
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$this->process($tpl, $block->child, $block); |
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} |
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} |
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/** |
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* Render parent block on \$smarty.block.parent or {block append/prepend} |
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* |
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* @param \Smarty_Internal_Template $tpl |
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* @param \Smarty_Internal_Block $block |
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* @param string $tag |
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* |
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* @return null|string block content |
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* @throws \SmartyException |
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*/ |
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public function callParent(Smarty_Internal_Template $tpl, Smarty_Internal_Block $block, $tag) |
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{ |
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if (isset($block->parent)) { |
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$this->callBlock($block->parent, $tpl); |
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} else { |
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throw new SmartyException("inheritance: illegal '{$tag}' used in child template '{$tpl->inheritance->sources[$block->tplIndex]->filepath}' block '{$block->name}'"); |
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} |
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} |
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/** |
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* render block |
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* |
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* @param \Smarty_Internal_Block $block |
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* @param \Smarty_Internal_Template $tpl |
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*/ |
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public function callBlock(Smarty_Internal_Block $block, Smarty_Internal_Template $tpl) |
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{ |
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$this->sourceStack[] = $tpl->source; |
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$tpl->source = $this->sources[ $block->tplIndex ]; |
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$block->callBlock($tpl); |
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$tpl->source = array_pop($this->sourceStack); |
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} |
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} |
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XOOPS /
XoopsCore25
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