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* @license https://github.com/xoopscube/legacy/blob/master/docs/bsd_licenses.txt Modified BSD license * */ define('XCUBE_PAGENAVI_START', 1); define('XCUBE_PAGENAVI_PERPAGE', 2); define('XCUBE_PAGENAVI_SORT', 1); define('XCUBE_PAGENAVI_PAGE', 4); define('XCUBE_PAGENAVI_DEFAULT_PERPAGE', 20); /** * This is a utility class which acquires page navigation informations * --- sort, offset and limit --- semiautomatically. And, the base modules may * offer place holders which is able to connect with interfaces of this class. */ class XCube_PageNavigator { /** * Array for extra informations. * @var Array */ var $mAttributes = array(); /** * Offset. * @var int */ var $mStart = 0; /** * The max number of items which this navigator handles. * @var int */ var $mTotalItems = 0; /** * Per page. * @var int */ var $mPerpage = XCUBE_PAGENAVI_DEFAULT_PERPAGE; /** * Flag indicating whether this class receives the perpage value specified * by the request. * @var bool */ var $mPerpageFreeze = false; /** * Array for sort. * @var Array */ var $mSort = array(); /** * The base url for this navigator. * @var string */ var $mUrl = ""; /** * A prefix for variable names fetched by this navigator. If two independent * navigators are used, this property is must. */ var $mPrefix = null; /** * Array of string for re-building the query strings. */ var $mExtra = array(); /** * Options indicating what this navigator fetches automatically. */ var $mFlags = 0; /** * @XCube_Delegate */ var $mFetch = null; /** * The value indicating whether the mTotal property already has been * specified. * @var bool */ var $_mIsSpecifedTotalItems = false; /** * This delegate is used in only case which mTotal isn't set yet. * * void getTotal(int &total, const XCube_Navigator); * * @var XCube_Delegate */ var $mGetTotalItems = null; /** * Constructor. * @param string $url * @param int $total * @param int flag */ function XCube_PageNavigator($url, $flags = XCUBE_PAGENAVI_START) { $this->mUrl = $url; $this->mFlags = $flags; $this->mFetch =new XCube_Delegate(); $this->mFetch->add(array(&$this, 'fetchNaviControl')); $this->mGetTotalItems =new XCube_Delegate(); } /** * Gets values which this navigator handles, from the request. And, sets * values to this object's properties. */ function fetch() { $this->mFetch->call(new XCube_Ref($this)); } function fetchNaviControl(&$navi) { $root =& XCube_Root::getSingleton(); $startKey = $navi->getStartKey(); $perpageKey = $navi->getPerpageKey(); if ($navi->mFlags & XCUBE_PAGENAVI_START) { $t_start = $root->mContext->mRequest->getRequest($navi->getStartKey()); if ($t_start != null && intval($t_start) >= 0) { $navi->mStart = intval($t_start); } } if ($navi->mFlags & XCUBE_PAGENAVI_PERPAGE && !$navi->mPerpageFreeze) { $t_perpage = $root->mContext->mRequest->getRequest($navi->getPerpageKey()); if ($t_perpage != null && intval($t_perpage) > 0) { $navi->mPerpage = intval($t_perpage); } } } function addExtra($key, $value) { $this->mExtra[$key] = $value; } function removeExtra($key) { if ($this->mExtra[$key]) { unset($this->mExtra[$key]); } } protected function _renderExtra(/*** string ***/ $key, /*** mixed ***/ $extra, /*** string[] ***/ &$query) { if(! is_array($extra)){ $query[] = $key.'='.urlencode($extra); } else{ //array foreach($extra as $k=>$value){ $this->_renderExtra($key."[".$k."]", $value, $query); } } } function getRenderBaseUrl($mask = null) { if ($mask == null) { $mask = array(); } if (!is_array($mask)) { $mask = array($mask); } if(count($this->mExtra) > 0) { $tarr=array(); foreach($this->mExtra as $key=>$value) { if (is_array($mask) && !in_array($key, $mask)) { //$tarr[]=$key."=".urlencode($value); $this->_renderExtra($key, $value, $tarr); } } if (count($tarr)==0) { return $this->mUrl; } if(strpos($this->mUrl,"?")!==false) { return $this->mUrl."&".implode("&",$tarr); } else { return $this->mUrl."?".implode("&",$tarr); } } return $this->mUrl; } /** * Return url string for navigation. The return value is lose start value. * The user need to add start value. For example, It is "$navi->getRenderUrl().'20'". * This method name is bad. I must rename this. * @return string */ function getRenderUrl($mask = null) { if ($mask != null && !is_array($mask)) { $mask = array($mask); } $demiliter = "?"; $url = $this->getRenderBaseUrl($mask); if(strpos($url,"?")!==false) { $demiliter = "&"; } return $url . $demiliter . $this->getStartKey() . "="; } function renderUrlForSort() { if(count($this->mExtra) > 0) { $tarr=array(); foreach($this->mExtra as $key=>$value) { //$tarr[]=$key."=".urlencode($value); $this->_renderExtra($key, $value, $tarr); } $tarr[] = $this->getPerpageKey() . "=" . $this->mPerpage; if(strpos($this->mUrl,"?")!==false) { return $this->mUrl."&".implode("&",$tarr); } else { return $this->mUrl."?".implode("&",$tarr); } } return $this->mUrl; } function renderUrlForPage($page = null) { $tarr=array(); foreach($this->mExtra as $key=>$value) { //$tarr[]=$key."=".urlencode($value); $this->_renderExtra($key, $value, $tarr); } foreach($this->mSort as $key=>$value) { $tarr[]=$key."=".urlencode($value); } $tarr[] = $this->getPerpageKey() . "=" . $this->getPerpage(); if ($page !== null) { $tarr[] = $this->getStartKey() . '=' . intval($page); } if (strpos($this->mUrl,"?") !== false) { return $this->mUrl."&".implode("&",$tarr); } return $this->mUrl."?".implode("&",$tarr); } /** * Return url string for sort. The return value is complete style. * @deprecated */ function renderSortUrl($mask = null) { return $this->renderUrlForSort(); } function setStart($start) { $this->mStart = intval($start); } function getStart() { return $this->mStart; } function setTotalItems($total) { $this->mTotal = intval($total); $this->_mIsSpecifiedTotal = true; } function getTotalItems() { if ($this->_mIsSpecifedTotalItems == false) { $this->mGetTotalItems->call(new XCube_Ref($this->mTotal)); $this->_mIsSpecifedTotalItems = true; } return $this->mTotal; } function getTotalPages() { if ($this->getPerpage() > 0) { return ceil($this->getTotalItems() / $this->getPerpage()); } return 0; } function setPerpage($perpage) { $this->mPerpage = intval($perpage); } function freezePerpage() { $this->mPerpageFreeze = true; } function getPerpage() { return $this->mPerpage; } function setPrefix($prefix) { $this->mPrefix = $prefix; } function getPrefix() { return $this->mPrefix; } function getStartKey() { return $this->mPrefix . "start"; } function getPerpageKey() { return $this->mPrefix . "perpage"; } function getCurrentPage() { return intval(floor(($this->getStart() + $this->getPerpage()) / $this->getPerpage())); } function hasPrivPage() { return ($this->getStart() - $this->getPerpage()) >= 0; } function getPrivStart() { $prev = $this->getStart() - $this->getPerpage(); return ($prev > 0) ? $prev : 0; } function hasNextPage() { return $this->getTotalItems() > ($this->getStart() + $this->getPerpage()); } function getNextStart() { $next = $this->getStart() + $this->getPerpage(); return ($this->getTotalItems() > $next) ? $next : 0; } } ?>