Asked by rvelices on this topic

http://forum.phpwebgallery.net/viewtopic.php?pid=92097#p92097

A plugin to integrate the menu class
 see test_menu directory

A plugin to show how to use the menu class
 see AMenuManager directory

And common classes needed for the AMenuManager plugin
 see grum_plugins_classes-2 directory

See topic http://forum.phpwebgallery.net/viewtopic.php?pid=92637#p92637 for more
informations 

git-svn-id: http://piwigo.org/svn/trunk@2466 68402e56-0260-453c-a942-63ccdbb3a9ee

plugins/grum_plugins_classes-2/pages_navigation.class.inc.php

@@ -0,0 +1,294 @@
+<?php
+
+/* -----------------------------------------------------------------------------
+  class name: pages_navigation
+  class version: 1.0
+  date: 2007-11-17
+  ------------------------------------------------------------------------------
+  author: grum at grum.dnsalias.com
+  << May the Little SpaceFrog be with you >>
+  ------------------------------------------------------------------------------
+
+   this classes provides base functions to manage pages navigation
+
+    - constructor pages_navigation($url)
+    - (public) function set_nb_items($nbitems)
+    - (public) function get_nb_items()
+    - (public) function set_nb_items_per_page($nbitems)
+    - (public) function get_nb_items_per_page()
+    - (public) function get_nb_pages()
+    - (public) function set_current_page($page)
+    - (public) function get_current_page()
+    - (public) function set_base_url($url)
+    - (public) function get_base_url()
+    - (public) function make_navigation()
+    - (public) function make_navigation_function()
+    - (private) function calc_nb_pages()
+   ---------------------------------------------------------------------- */
+class pages_navigation
+{
+  var $nbitems;
+  var $nbitemsperpages;
+  var $nbpages;
+  var $currentpage;
+  var $baseurl;
+  var $pagevarurl;
+  var $options;
+
+  function pages_navigation()
+  {
+    $this->nbitems=0;
+    $this->nbitemsperpages=0;
+    $this->nbpages=0;
+    $this->currentpage=0;
+    $this->baseurl='';
+    $this->pagevarurl='';
+    $this->options=array(
+      'prev_next' => true,
+      'first_last' => true,
+      'display_all' => true,
+      'number_displayed' => 2 //number of page displayed before and after current page
+    );
+  }
+
+  /*
+    define value for total number of items
+  */
+  function set_nb_items($nbitems)
+  {
+    if($nbitems!=$this->nbitems)
+    {
+      $this->nbitems=$nbitems;
+      $this->calc_nb_pages();
+    }
+    return($nbitems);
+  }
+
+  function get_nb_items()
+  {
+    return($nbitems);
+  }
+
+  /*
+    define value for number of items displayed per pages
+  */
+  function set_nb_items_per_page($nbitems)
+  {
+    if(($nbitems!=$this->nbitemsperpages)&&($nbitems>0))
+    {
+      $this->nbitemsperpages=$nbitems;
+      $this->calc_nb_pages();
+    }
+    return($this->nbitemsperpages);
+  }
+
+  function get_nb_items_per_page()
+  {
+    return($this->nbitemsperpages);
+  }
+
+  /*
+    return numbers of pages
+  */
+  function get_nb_pages()
+  {
+    return($this->nbpages);
+  }
+
+  /*
+    define the current page number
+  */
+  function set_current_page($page)
+  {
+    if(($page!=$this->currentpage)&&($page<=$this->nbpages)&&($page>0))
+    {
+      $this->currentpage=$page;
+    }
+    return($this->currentpage);
+  }
+
+  /*
+    returns the current page number
+  */
+  function get_current_page()
+  {
+    return($this->currentpage);
+  }
+
+  /*
+    define the value for url
+    ex: "http://mysite.com/admin.php?var1=xxx&var2=xxx"
+  */
+  function set_base_url($url)
+  {
+    if($url!=$this->baseurl)
+    {
+      $this->baseurl=$url;
+    }
+    return($this->baseurl);
+  }
+
+  function get_base_url()
+  {
+    return($this->baseurl);
+  }
+
+  /*
+    define the value for variables's name
+    ex: url = "http://mysite.com/admin.php?var1=xxx&var2=xxx"
+        pagevar = "pagenumber"
+    url made is "http://mysite.com/admin.php?var1=xxx&var2=xxx&pagenumber=xxx"
+  */
+  function set_pagevar_url($var)
+  {
+    if($var!=$this->pagevarurl)
+    {
+      $this->pagevarurl=$var;
+    }
+    return($this->pagevarurl);
+  }
+
+  function get_pagevar_url()
+  {
+    return($this->pagevarurl);
+  }
+
+
+  /*
+    returns an html formatted string
+  */
+  function make_navigation($functionname='')
+  {
+    $text='';
+    if(($this->options['display_all'])||($this->options['number_displayed']>=$this->nbpages))
+    {
+      for($i=1;$i<=$this->nbpages;$i++)
+      {
+        if($i!=$this->currentpage)
+        {
+          if($functionname=='')
+          {
+            $text.='<a href="'.$this->baseurl.'&'.$this->pagevarurl.'='.$i.'">'.$i.'</a>&nbsp;';
+          }
+          else
+          {
+            $text.='<a style="cursor:pointer;" onclick="'.$functionname.'('.$i.');">'.$i.'</a>&nbsp;';
+          }
+        }
+        else
+        {
+          $text.=$i.'&nbsp;';
+        }
+      }
+    }
+    else
+    {
+      for($i=$this->currentpage-$this->options['number_displayed'];$i<=$this->currentpage+$this->options['number_displayed'];$i++)
+      {
+        if(($i>0)&&($i<=$this->nbpages))
+        {
+          if($i!=$this->currentpage)
+          {
+            if($functionname=='')
+            {
+              $text.='<a href="'.$this->baseurl.'&'.$this->pagevarurl.'='.$i.'">'.$i.'</a>&nbsp;';
+            }
+            else
+            {
+              $text.='<a style="cursor:pointer;" onclick="'.$functionname.'('.$i.');">'.$i.'</a>&nbsp;';
+            }
+          }
+          else
+          {
+            $text.=$i.'&nbsp;';
+          }
+        }
+      }
+      if($this->currentpage-$this->options['number_displayed']>0)
+      {
+        $text='&nbsp;...&nbsp;'.$text;
+      }
+      if($this->currentpage+$this->options['number_displayed']<$this->nbpages)
+      {
+        $text.='&nbsp;...&nbsp;';
+      }
+    }
+
+    if($this->options['prev_next'])
+    {
+      $prevp='';
+      $nextp='';
+      if($this->currentpage>1)
+      {
+        if($functionname=='')
+        {
+          $prevp='<a href="'.$this->baseurl.'&'.$this->pagevarurl.'='.($this->currentpage-1).'"> Prev </a>';
+        }
+        else
+        {
+          $prevp='<a style="cursor:pointer;" onclick="'.$functionname.'('.($this->currentpage-1).');"> Prev </a>';
+        }
+      }
+      if($this->currentpage<$this->nbpages)
+      {
+        if($functionname=='')
+        {
+          $nextp='<a href="'.$this->baseurl.'&'.$this->pagevarurl.'='.($this->currentpage+1).'"> Next </a>';
+        }
+        else
+        {
+          $nextp='<a style="cursor:pointer;" onclick="'.$functionname.'('.($this->currentpage+1).');"> Next </a>';
+        }
+      }
+
+      $text=$prevp.$text.$nextp;
+    }
+
+    if($this->options['first_last'])
+    {
+      $firstp='';
+      $lastp='';
+      if($this->currentpage>1)
+      {
+        if($functionname=='')
+        {
+          $firstp='<a href="'.$this->baseurl.'&'.$this->pagevarurl.'=1"> First </a>';
+        }
+        else
+        {
+          $firstp='<a style="cursor:pointer;" onclick="'.$functionname.'(1);"> First </a>';
+        }
+      }
+      if($this->currentpage<$this->nbpages)
+      {
+        if($functionname=='')
+        {
+          $lastp='<a href="'.$this->baseurl.'&'.$this->pagevarurl.'='.$this->nbpages.'"> Last </a>';
+        }
+        else
+        {
+          $lastp='<a style="cursor:pointer;" onclick="'.$functionname.'('.$this->nbpages.');"> Last </a>';
+        }
+      }
+
+      $text=$firstp.$text.$lastp;
+    }
+
+    return($text);
+  }
+
+
+  /*
+    calculate the number of pages...
+  */
+  function calc_nb_pages()
+  {
+    if($this->nbitemsperpages>0)
+    {
+      $this->nbpages=ceil($this->nbitems/$this->nbitemsperpages);
+    }
+  }
+
+} //class
+
+?>