mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
b1d2e3906b
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@47766 467b73ca-7a2a-4603-9d3b-597d59a354a9
587 lines
17 KiB
PHP
587 lines
17 KiB
PHP
<?php
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/**
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* @package sapphire
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* @subpackage model
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*/
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/**
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* DataObjects that use the Hierachy decorator can be be organised as a hierachy, with children and parents.
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* The most obvious example of this is SiteTree.
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* @package sapphire
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* @subpackage model
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*/
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class Hierarchy extends DataObjectDecorator {
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protected $markedNodes;
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protected $markingFilter;
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function augmentSQL(SQLQuery &$query) {
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}
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function augmentDatabase() {
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}
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function augmentWrite(&$manipulation) {
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}
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/**
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* Returns the children of this DataObject as an XHTML UL. This will be called recursively on each child,
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* so if they have children they will be displayed as a UL inside a LI.
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* @param string $attributes Attributes to add to the UL.
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* @param string $titleEval PHP code to evaluate to start each child - this should include '<li>'
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* @param string $extraArg Extra arguments that will be passed on to children, for if they overload this function.
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* @param boolean $limitToMarked Display only marked children.
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* @param boolean $rootCall Set to true for this first call, and then to false for calls inside the recursion. You should not change this.
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* @return string
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*/
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public function getChildrenAsUL($attributes = "", $titleEval = '"<li>" . $child->Title', $extraArg = null, $limitToMarked = false, $rootCall = true) {
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if($limitToMarked && $rootCall) {
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$this->markingFinished();
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}
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$children = $this->owner->AllChildrenIncludingDeleted();
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if($children) {
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if($attributes) {
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$attributes = " $attributes";
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}
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$output = "<ul$attributes>\n";
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foreach($children as $child) {
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if(!$limitToMarked || $child->isMarked()) {
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$foundAChild = true;
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$output .= eval("return $titleEval;") . "\n" .
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$child->getChildrenAsUL("", $titleEval, $extraArg, $limitToMarked, false) . "</li>\n";
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}
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}
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$output .= "</ul>\n";
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}
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if(isset($foundAChild) && $foundAChild) {
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return $output;
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}
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}
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/**
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* Mark a segment of the tree, by calling mark().
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* The method performs a breadth-first traversal until the number of nodes is more than minCount.
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* This is used to get a limited number of tree nodes to show in the CMS initially.
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*
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* This method returns the number of nodes marked. After this method is called other methods
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* can check isExpanded() and isMarked() on individual nodes.
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*
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* @param int $minCount The minimum amount of nodes to mark.
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* @return int The actual number of nodes marked.
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*/
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public function markPartialTree($minCount = 30) {
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$this->markedNodes = array($this->owner->ID => $this->owner);
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$this->owner->markUnexpanded();
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// foreach can't handle an ever-growing $nodes list
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while(list($id, $node) = each($this->markedNodes)) {
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$this->markChildren($node);
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if($minCount && sizeof($this->markedNodes) >= $minCount) {
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break;
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}
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}
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return sizeof($this->markedNodes);
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}
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/**
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* Filter the marking to only those object with $node->$parameterName = $parameterValue
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* @param string $parameterName The parameter on each node to check when marking.
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* @param mixed $parameterValue The value the parameter must be to be marked.
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*/
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public function setMarkingFilter($parameterName, $parameterValue) {
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$this->markingFilter = array(
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"parameter" => $parameterName,
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"value" => $parameterValue
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);
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}
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/**
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* Filter the marking to only those where the function returns true.
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* The node in question will be passed to the function.
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* @param string $funcName The function name.
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*/
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public function setMarkingFilterFunction($funcName) {
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$this->markingFilter = array(
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"func" => $funcName,
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);
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}
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/**
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* Returns true if the marking filter matches on the given node.
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* @param DataObject $node Node to check.
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* @return boolean
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*/
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public function markingFilterMatches($node) {
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if(!$this->markingFilter) {
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return true;
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}
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if(isset($this->markingFilter['parameter']) && $parameterName = $this->markingFilter['parameter']) {
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if(is_array($this->markingFilter['value'])){
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$ret = false;
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foreach($this->markingFilter['value'] as $value) {
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$ret = $ret||$node->$parameterName==$value;
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if($ret == true) {
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break;
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}
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}
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return $ret;
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} else {
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return ($node->$parameterName == $this->markingFilter['value']);
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}
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} else if ($funcName = $this->markingFilter['func']) {
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return $funcName($node);
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}
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}
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/**
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* Mark all children of the given node that match the marking filter.
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* @param DataObject $node Parent node.
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*/
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public function markChildren($node) {
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$children = $node->AllChildrenIncludingDeleted();
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$node->markExpanded();
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if($children) {
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foreach($children as $child) {
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if(!$this->markingFilter || $this->markingFilterMatches($child)) {
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$child->markUnexpanded();
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$this->markedNodes[$child->ID] = $child;
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}
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}
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}
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}
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/**
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* Ensure marked nodes that have children are also marked expanded.
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* Call this after marking but before iterating over the tree.
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*/
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protected function markingFinished() {
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// Mark childless nodes as expanded.
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foreach($this->markedNodes as $id => $node) {
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if(!$node->numChildren()) {
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$node->markExpanded();
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}
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}
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}
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/**
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* Return CSS classes of 'unexpanded', 'closed', both, or neither, depending on
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* the marking of this DataObject.
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*/
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public function markingClasses() {
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$classes = '';
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if(!$this->expanded) {
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$classes .= " unexpanded";
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}
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if(!$this->treeOpened) {
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$classes .= " closed";
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}
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return $classes;
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}
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/**
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* Mark the children of the DataObject with the given ID.
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* @param int $id ID of parent node.
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* @param boolean $open If this is true, mark the parent node as opened.
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*/
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public function markById($id, $open = false) {
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if(isset($this->markedNodes[$id])) {
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$this->markChildren($this->markedNodes[$id]);
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if($open) {
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$this->markedNodes[$id]->markOpened();
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}
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return true;
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} else {
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return false;
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}
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}
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/**
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* Expose the given object in the tree, by marking this page and all it ancestors.
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* @param DataObject $childObj
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*/
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public function markToExpose($childObj) {
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if(is_object($childObj)){
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$stack = array_reverse($childObj->parentStack());
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foreach($stack as $stackItem) {
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$this->markById($stackItem->ID, true);
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}
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}
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}
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/**
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* Return an array of this page and its ancestors, ordered item -> root.
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* @return array
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*/
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public function parentStack() {
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$p = $this->owner;
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while($p) {
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$stack[] = $p;
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$p = $p->ParentID ? $p->Parent() : null;
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}
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return $stack;
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}
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/**
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* True if this DataObject is marked.
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* @var boolean
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*/
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protected $marked = false;
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/**
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* True if this DataObject is expanded.
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* @var boolean
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*/
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protected $expanded = false;
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/**
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* True if this DataObject is opened.
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* @var boolean
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*/
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protected $treeOpened = false;
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/**
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* Mark this DataObject as expanded.
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*/
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public function markExpanded() {
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$this->marked = true;
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$this->expanded = true;
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}
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/**
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* Mark this DataObject as unexpanded.
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*/
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public function markUnexpanded() {
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$this->marked = true;
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$this->expanded = false;
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}
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/**
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* Mark this DataObject's tree as opened.
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*/
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public function markOpened() {
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$this->marked = true;
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$this->treeOpened = true;
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}
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/**
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* Check if this DataObject is marked.
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* @return boolean
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*/
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public function isMarked() {
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return $this->marked;
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}
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/**
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* Check if this DataObject is expanded.
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* @return boolean
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*/
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public function isExpanded() {
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return $this->expanded;
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}
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/**
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* Check if this DataObject's tree is opened.
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*/
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public function isTreeOpened() {
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return $this->treeOpened;
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}
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/**
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* Return a partial tree as an HTML UL.
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*/
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public function partialTreeAsUL($minCount = 50) {
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$children = $this->owner->AllChildren();
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if($children) {
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if($attributes) $attributes = " $attributes";
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$output = "<ul$attributes>\n";
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foreach($children as $child) {
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$output .= eval("return $titleEval;") . "\n" .
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$child->getChildrenAsUL("", $titleEval, $extraArg) . "</li>\n";
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}
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$output .= "</ul>\n";
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}
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return $output;
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}
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/**
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* Get a list of this DataObject's and all it's descendants IDs.
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* @return int
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*/
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public function getDescendantIDList() {
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$idList = array();
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$this->loadDescendantIDListInto($idList);
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return $idList;
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}
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/**
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* Get a list of this DataObject's and all it's descendants ID, and put it in $idList.
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* @var array $idList Array to put results in.
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*/
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public function loadDescendantIDListInto(&$idList) {
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if($children = $this->AllChildren()) {
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foreach($children as $child) {
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if(in_array($child->ID, $idList)) {
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continue;
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}
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$idList[] = $child->ID;
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$child->loadDescendantIDListInto($idList);
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}
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}
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}
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/**
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* Cached result for AllChildren().
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* @var DataObjectSet
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*/
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protected $allChildren;
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/**
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* Cached result for AllChildrenIncludingDeleted().
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* @var DataObjectSet
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*/
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protected $allChildrenIncludingDeleted;
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/**
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* Cached result for Children().
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*/
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protected $children;
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/**
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* Get the children for this DataObject.
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* @return DataObjectSet
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*/
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public function Children() {
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return $this->owner->stageChildren(false);
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}
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/**
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* Return all children, including those 'not in menus'.
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* @return DataObjectSet
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*/
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public function AllChildren() {
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// Cache the allChildren data, so that future requests will return the references to the same
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// object. This allows the mark..() system to work appropriately.
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if(!$this->allChildren) {
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$this->allChildren = $this->owner->stageChildren(true);
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}
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return $this->allChildren;
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}
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/**
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* Return all children, including those that have been deleted but are still in live.
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* Deleted children will be marked as "DeletedFromStage"
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* Added children will be marked as "AddedToStage"
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* Modified children will be marked as "ModifiedOnStage"
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* Everything else has "SameOnStage" set, as an indicator that this information has been looked up.
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* @return DataObjectSet
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*/
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public function AllChildrenIncludingDeleted() {
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// Cache the allChildren data, so that future requests will return the references to the same
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// object. This allows the mark..() system to work appropriately.
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if(!$this->allChildrenIncludingDeleted) {
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$baseClass = ClassInfo::baseDataClass($this->owner->class);
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if($baseClass) {
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$stageChildren = $this->owner->stageChildren(true);
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$this->allChildrenIncludingDeleted = $stageChildren;
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// Add live site content, if required.
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if($this->owner->hasExtension('Versioned')) {
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// Get all the requisite data, and index it
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$liveChildren = $this->owner->liveChildren(true);
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if(isset($stageChildren)) {
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foreach($stageChildren as $child) {
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$idxStageChildren[$child->ID] = $child;
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}
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}
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if(isset($liveChildren)) {
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foreach($liveChildren as $child) {
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$idxLiveChildren[$child->ID] = $child;
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}
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}
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if(isset($idxStageChildren)) {
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$foundInLive = Versioned::get_by_stage( $baseClass, 'Live', "`{$baseClass}`.`ID` IN (" . implode(",", array_keys($idxStageChildren)) . ")", "" );
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}
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if(isset($idxLiveChildren)) {
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$foundInStage = Versioned::get_by_stage( $baseClass, 'Stage', "`{$baseClass}`.`ID` IN (" . implode(",", array_keys($idxLiveChildren)) . ")", "" );
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}
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if(isset($foundInLive)) {
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foreach($foundInLive as $child) {
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$idxFoundInLive[$child->ID] = $child;
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}
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}
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if(isset($foundInStage)) {
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foreach($foundInStage as $child) {
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$idxFoundInStage[$child->ID] = $child;
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}
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}
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$this->allChildrenIncludingDeleted = new DataObjectSet();
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// First, go through the stage children. They will all be listed but may be different colours
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if($stageChildren) {
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foreach($stageChildren as $child) {
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// Not found on live = new page
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if(!isset($idxFoundInLive[$child->ID])) {
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$child->AddedToStage = true;
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// Version different on live = edited page
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} else if($idxFoundInLive[$child->ID]->Version != $child->Version) {
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$child->ModifiedOnStage = true;
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}
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$child->CheckedPublicationDifferences = true;
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$this->allChildrenIncludingDeleted->push($child);
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}
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}
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// Next, go through the live children. Only some of these will be listed
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if($liveChildren) {
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foreach($liveChildren as $child) {
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// Not found on stage = deleted page. Anything else is ignored
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if(!isset($idxFoundInStage[$child->ID])) {
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$child->DeletedFromStage = true;
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$child->CheckedPublicationDifferences = true;
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$this->allChildrenIncludingDeleted->push($child);
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}
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}
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}
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}
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} else {
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user_error("Hierarchy::AllChildren() Couldn't determine base class for '{$this->owner->class}'", E_USER_ERROR);
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}
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}
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return $this->allChildrenIncludingDeleted;
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}
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/**
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* Return the number of children
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* @return int
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*/
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public function numChildren() {
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$baseClass = ClassInfo::baseDataClass($this->owner->class);
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// We build the query in an extension-friendly way.
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$query = new SQLQuery("COUNT(*)","`$baseClass`","ParentID = " . (int)$this->owner->ID);
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$this->owner->extend('augmentSQL', $query);
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return $query->execute()->value();
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}
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/**
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* Return children from the stage site
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* @param showAll Inlcude all of the elements, even those not shown in the menus.
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* @return DataObjectSet
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*/
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public function stageChildren($showAll = false) {
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$extraFilter = $showAll ? '' : " AND ShowInMenus = 1";
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$baseClass = ClassInfo::baseDataClass($this->owner->class);
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return DataObject::get($baseClass, "`{$baseClass}`.`ParentID` = " . (int)$this->owner->ID . " AND `{$baseClass}`.ID != " . (int)$this->owner->ID . $extraFilter, "");
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}
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/**
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* Return children from the live site, if it exists.
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* @param boolean $showAll Include all of the elements, even those not shown in the menus.
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* @return DataObjectSet
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*/
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public function liveChildren($showAll = false) {
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$extraFilter = $showAll ? '' : " AND ShowInMenus = 1";
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$baseClass = ClassInfo::baseDataClass($this->owner->class);
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return Versioned::get_by_stage($baseClass, "Live", "`{$baseClass}`.`ParentID` = " . (int)$this->owner->ID . " AND `{$baseClass}`.ID != " . (int)$this->owner->ID. $extraFilter, "");
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}
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/**
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* Get the parent of this class.
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* @return DataObject
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*/
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public function getParent($filter = '') {
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if($p = $this->owner->__get("ParentID")) {
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$className = $this->owner->class;
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$filter .= $filter?" AND ":""."`$className`.ID = $p";
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return DataObject::get_one($className, $filter);
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}
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}
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/**
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* Get the next node in the tree of the type. If there is no instance of the className descended from this node,
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* then search the parents.
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*
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* TODO Write!
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*/
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public function naturalPrev( $className, $afterNode = null ) {
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return null;
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}
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/**
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* Get the next node in the tree of the type. If there is no instance of the className descended from this node,
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* then search the parents.
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* @param string $className Class name of the node to find.
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* @param string|int $root ID/ClassName of the node to limit the search to
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* @param DataObject afterNode Used for recursive calls to this function
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* @return DataObject
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*/
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public function naturalNext( $className = null, $root = 0, $afterNode = null ) {
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// If this node is not the node we are searching from, then we can possibly return this
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// node as a solution
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if($afterNode && $afterNode->ID != $this->owner->ID) {
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if(!$className || ($className && $this->owner->class == $className)) {
|
|
return $this->owner;
|
|
}
|
|
}
|
|
|
|
$nextNode = null;
|
|
$baseClass = ClassInfo::baseDataClass($this->owner->class);
|
|
|
|
// Try searching for the next node of the given class in each of the children, but treat each
|
|
// child as the root of the search. This will stop the recursive call from searching backwards.
|
|
// If afterNode is given, then only search for the nodes after
|
|
if(!$afterNode || $afterNode->ParentID != $this->owner->ID) {
|
|
$children = $this->AllChildren();
|
|
} else {
|
|
$children = DataObject::get(ClassInfo::baseDataClass($this->owner->class), "`$baseClass`.`ParentID`={$this->owner->ID}" . ( ( $afterNode ) ? " AND `Sort` > " . sprintf( '%d', $afterNode->Sort ) : "" ), '`Sort` ASC');
|
|
}
|
|
|
|
// Try all the siblings of this node after the given node
|
|
/*if( $siblings = DataObject::get( ClassInfo::baseDataClass($this->owner->class), "`ParentID`={$this->owner->ParentID}" . ( $afterNode ) ? "`Sort` > {$afterNode->Sort}" : "" , '`Sort` ASC' ) )
|
|
$searchNodes->merge( $siblings );*/
|
|
|
|
if($children) {
|
|
foreach($children as $node) {
|
|
if($nextNode = $node->naturalNext($className, $node->ID, $this->owner)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if($nextNode) {
|
|
return $nextNode;
|
|
}
|
|
}
|
|
|
|
// if this is not an instance of the root class or has the root id, search the parent
|
|
if(!(is_numeric($root) && $root == $this->owner->ID || $root == $this->owner->class) && ($parent = $this->owner->Parent())) {
|
|
return $parent->naturalNext( $className, $root, $this->owner );
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|
|
|
|
?>
|