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https://we.phorge.it/source/phorge.git
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aaab1011e5
Summary: Two minor changes here: - Replace `get/setUser()` with `get/setViewer()` for consistency with everything else. - `getViewer()` now throws if no viewer is set. We had a lot of code that either "should" check this but didn't, or did check it in an identical way, duplicating work. In contrast, very little code checks for a viewer but works if one is not present. Test Plan: - Grepped for `->user`. - Attempted to fix all callsites inside `*View` classes. - Browsed around a bunch of applications, particularly Calendar, Differential and Diffusion, which seemed most heavily affected. Reviewers: chad Reviewed By: chad Differential Revision: https://secure.phabricator.com/D15412
225 lines
5.1 KiB
PHP
225 lines
5.1 KiB
PHP
<?php
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/**
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* @task children Managing Children
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*/
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abstract class AphrontView extends Phobject
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implements PhutilSafeHTMLProducerInterface {
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private $viewer;
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protected $children = array();
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/* -( Configuration )------------------------------------------------------ */
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/**
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* Set the user viewing this element.
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*
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* @param PhabricatorUser Viewing user.
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* @return this
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*/
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public function setViewer(PhabricatorUser $viewer) {
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$this->viewer = $viewer;
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return $this;
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}
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/**
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* Get the user viewing this element.
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*
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* Throws an exception if no viewer has been set.
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*
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* @return PhabricatorUser Viewing user.
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*/
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public function getViewer() {
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if (!$this->viewer) {
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throw new PhutilInvalidStateException('setViewer');
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}
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return $this->viewer;
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}
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/**
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* Test if a viewer has been set on this elmeent.
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*
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* @return bool True if a viewer is available.
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*/
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public function hasViewer() {
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return (bool)$this->viewer;
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}
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/**
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* Deprecated, use @{method:setViewer}.
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*
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* @task config
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* @deprecated
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*/
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public function setUser(PhabricatorUser $user) {
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return $this->setViewer($user);
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}
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/**
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* Deprecated, use @{method:getViewer}.
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*
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* @task config
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* @deprecated
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*/
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protected function getUser() {
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if (!$this->hasViewer()) {
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return null;
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}
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return $this->getViewer();
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}
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/* -( Managing Children )-------------------------------------------------- */
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/**
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* Test if this View accepts children.
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*
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* By default, views accept children, but subclases may override this method
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* to prevent children from being appended. Doing so will cause
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* @{method:appendChild} to throw exceptions instead of appending children.
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*
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* @return bool True if the View should accept children.
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* @task children
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*/
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protected function canAppendChild() {
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return true;
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}
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/**
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* Append a child to the list of children.
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*
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* This method will only work if the view supports children, which is
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* determined by @{method:canAppendChild}.
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*
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* @param wild Something renderable.
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* @return this
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*/
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final public function appendChild($child) {
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if (!$this->canAppendChild()) {
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$class = get_class($this);
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throw new Exception(
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pht("View '%s' does not support children.", $class));
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}
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$this->children[] = $child;
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return $this;
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}
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/**
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* Produce children for rendering.
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*
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* Historically, this method reduced children to a string representation,
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* but it no longer does.
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*
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* @return wild Renderable children.
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* @task
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*/
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final protected function renderChildren() {
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return $this->children;
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}
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/**
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* Test if an element has no children.
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*
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* @return bool True if this element has children.
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* @task children
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*/
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final public function hasChildren() {
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if ($this->children) {
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$this->children = $this->reduceChildren($this->children);
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}
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return (bool)$this->children;
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}
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/**
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* Reduce effectively-empty lists of children to be actually empty. This
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* recursively removes `null`, `''`, and `array()` from the list of children
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* so that @{method:hasChildren} can more effectively align with expectations.
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*
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* NOTE: Because View children are not rendered, a View which renders down
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* to nothing will not be reduced by this method.
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*
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* @param list<wild> Renderable children.
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* @return list<wild> Reduced list of children.
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* @task children
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*/
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private function reduceChildren(array $children) {
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foreach ($children as $key => $child) {
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if ($child === null) {
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unset($children[$key]);
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} else if ($child === '') {
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unset($children[$key]);
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} else if (is_array($child)) {
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$child = $this->reduceChildren($child);
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if ($child) {
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$children[$key] = $child;
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} else {
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unset($children[$key]);
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}
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}
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}
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return $children;
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}
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public function getDefaultResourceSource() {
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return 'phabricator';
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}
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public function requireResource($symbol) {
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$response = CelerityAPI::getStaticResourceResponse();
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$response->requireResource($symbol, $this->getDefaultResourceSource());
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return $this;
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}
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public function initBehavior($name, $config = array()) {
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Javelin::initBehavior(
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$name,
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$config,
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$this->getDefaultResourceSource());
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return $this;
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}
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/* -( Rendering )---------------------------------------------------------- */
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/**
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* Inconsistent, unreliable pre-rendering hook.
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*
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* This hook //may// fire before views render. It is not fired reliably, and
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* may fire multiple times.
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*
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* If it does fire, views might use it to register data for later loads, but
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* almost no datasources support this now; this is currently only useful for
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* tokenizers. This mechanism might eventually see wider support or might be
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* removed.
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*/
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public function willRender() {
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return;
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}
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abstract public function render();
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/* -( PhutilSafeHTMLProducerInterface )------------------------------------ */
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public function producePhutilSafeHTML() {
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return $this->render();
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}
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}
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