New features for paging in order to give the user the possibility to use pagination in the traditional way

Author: jlamim

system/Pager/PagerRenderer.php

@@ -343,4 +343,78 @@ protected function updatePages(int $count = null)
 	}
 
 	//--------------------------------------------------------------------
+
+	/**
+	 * Checks to see if there is a "previous" page before our "first" page.
+	 *
+	 * @return boolean
+	 */
+	public function hasPreviousPage(): bool
+	{
+		return $this->current > 1;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns a URL to the "previous" page.
+	 *
+	 * You MUST call hasPreviousPage() first, or this value may be invalid.
+	 *
+	 * @return string|null
+	 */
+	public function getPreviousPage()
+	{
+		if (!$this->hasPreviousPage()) {
+			return null;
+		}
+
+		$uri = clone $this->uri;
+
+		if ($this->segment === 0) {
+			$uri->addQuery($this->pageSelector, $this->current - 1);
+		} else {
+			$uri->setSegment($this->segment, $this->current - 1);
+		}
+
+		return (string) $uri;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Checks to see if there is a "next" page after our "last" page.
+	 *
+	 * @return boolean
+	 */
+	public function hasNextPage(): bool
+	{
+		return $this->current < $this->last;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns a URL to the "next" page.
+	 *
+	 * You MUST call hasNextPage() first, or this value may be invalid.
+	 *
+	 * @return string|null
+	 */
+	public function getNextPage()
+	{
+		if (!$this->hasNextPage()) {
+			return null;
+		}
+
+		$uri = clone $this->uri;
+
+		if ($this->segment === 0) {
+			$uri->addQuery($this->pageSelector, $this->current + 1);
+		} else {
+			$uri->setSegment($this->segment, $this->current + 1);
+		}
+
+		return (string) $uri;
+	}
 }