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MediaWiki:PageNumbers.js

From The Austrian Economics Wiki, the global repository of classical-liberal thought

/*********************************


var layout_num = 0;

function toggle_layout() { 

 var n=0; for( key in self.ws_layouts ) n++;
 layout_num = (layout_num+1) % n;
 SetCookie("layout",""+layout_num);
 set_layout(layout_num);

}

if(!self.ws_layouts) self.ws_layouts = {}

function set_layout(layout_num) { 

 var i=0; for( key in self.ws_layouts ) { if(i==layout_num) layout_name = key; i++; }
 d = self.ws_layouts[layout_name];
 for( key in d ) {
    if(key.substring(0,1)=='.') {
       var t = get_elements_by_classname( key.substring(1,key.length) ,"span"); 
       for(var i=0; i<t.length; i++)  t[i].style.cssText = d[key];
    } else if(key.substring(0,1)=='#') {
       var item = document.getElementById(key.substring(1,key.length));
       if(item) item.style.cssText = d[key];
    }
 }
 o_a = document.getElementById("option-textLayout").firstChild;
 if(o_a) o_a.innerHTML = layout_name; 

 refresh_pagenumbers();

}

function add_page_container(){ 

       if(wgNamespaceNumber!=0 && wgNamespaceNumber!=2 ) return; 
       var a = null;
       if(wgAction=="view"||wgAction=="purge") a = document.getElementById("bodyContent"); 
       if(wgAction=="submit") a = document.getElementById("wikiPreview"); 
       if (!a) return;
       if( document.getElementById("text-wrap") ) return;
       if( get_elements_by_classname("pagenum","span").length==0 ) return;

var t = get_elements_by_classname("text","div"); 

       for(var i=0; i<t.length; i++)  t[i].className =""; 
       t = get_elements_by_classname("lefttext","div"); 
       for(var i=0; i<t.length; i++)  t[i].className =""; 
       t = get_elements_by_classname("centertext","div"); 
       for(var i=0; i<t.length; i++)  t[i].className =""; 
       t = get_elements_by_classname("indented-page","div"); 
       for(var i=0; i<t.length; i++)  t[i].className =""; 
       t = get_elements_by_classname("prose","div"); 
       for(var i=0; i<t.length; i++)  t[i].className ="";

a.innerHTML = "

"+a.innerHTML + "
";

var b = document.getElementById("contentSub"); if(b) { b.parentNode.removeChild(b); a.insertBefore(b,a.firstChild); 

       }

var b = document.getElementById("catlinks"); if(b) { b.parentNode.removeChild(b); a.appendChild(b); 

       }

}

function init_page_layout() { 

   if(self.debug_page_layout) return;

   if(document.URL.indexOf("match=") > 0 ) return;
   if(document.URL.indexOf("diff=") > 0 ) return;

   var k=false; 
   for( key in self.ws_layouts ) { k = true;}
   if(!k) return;

   add_page_container();

   if(document.getElementById("text-wrap")) {
      var optlist = get_optlist();
      /*p = document.getElementById('p-displayOptions'); 
      if(self.proofreadpage_debug) alert(p);*/
      addPortletLink ('p-displayOptions', 'javascript:toggle_layout();', ws_msg('layout'), 'option-textLayout',  );
      layout = GetCookie("layout") ;
      if(layout) layout_num = parseInt( layout ); else layout_num = 0;
      if(!layout_num) layout_num = 0;
      set_layout(layout_num);
   }

}


function hide_pagenumbers(){ 

  var ml = get_elements_by_classname( 'pagenumber', 'span' );
  for(var i=0; i<ml.length; i++) {
    ml[i].style.display="none";
  }
  o_a = document.getElementById("option-pageNumbers").firstChild;
  if(o_a) {
    o_a.setAttribute('href','javascript:show_pagenumbers();');
    o_a.innerHTML = ws_msg('show_page_numbers'); 
  }
  SetCookie("pagenum","0") ;

}

function show_pagenumbers(){ 

  var ml = get_elements_by_classname( 'pagenumber', 'span' );
  for(var i=0; i<ml.length; i++) {
    ml[i].style.display="";
  }
  o_a = document.getElementById("option-pageNumbers").firstChild;
  if(o_a){
    o_a.setAttribute('href','javascript:hide_pagenumbers();');
    o_a.innerHTML = ws_msg('hide_page_numbers'); 
  }
  SetCookie("pagenum","1") ;

}

// see http://stackoverflow.com/questions/1472842/firefox-and-chrome-give-different-values-for-offsettop

function get_offset(item) { var ox=0; var oy=0; var zme = item; for(zmi=0;zmi<50;zmi++) { if(zme+1 == 1 ) { break; } else { ox+=zme.offsetLeft; 

                       oy+=zme.offsetTop;

} zme=zme.offsetParent; } return [ox,oy, item.offsetTop]; }

function pagenum_over(ox,oy,prev_ox,prev_oy,h,w) { 

 if(self.proofreadpage_disable_highlighting) return true;
 var ct = document.getElementById("ct-popup");
 if(!ct) return true;
 var dd = h/10;
 ct.style.top = (oy-h+dd)+"px";
 ct.style.height= "";

 ct.firstChild.style.width = (w-ox)+"px";
 ct.firstChild.nextSibling.style.height = (prev_oy-oy-h)+"px";
 ct.firstChild.nextSibling.nextSibling.style.width = prev_ox+"px";
 return true;

}

function pagenum_out(){ 

 if(self.proofreadpage_disable_highlighting) return true;
 var ct = document.getElementById("ct-popup");
 if(!ct) return true;
 ct.style.height= "0px";
 ct.firstChild.style.width = "0px";
 ct.firstChild.nextSibling.style.height = "0px";
 ct.firstChild.nextSibling.nextSibling.style.width = "0px";
 return true;

}


function init_page_numbers() { if(self.debug_page_numbers) return; if(document.URL.indexOf("match=") > 0 ) return; 

   self.pagenum_ml = get_elements_by_classname( 'pagenum', 'span' );
   if(self.pagenum_ml.length==0) return;
   var optlist = get_optlist();
   addPortletLink ('p-displayOptions', 'javascript:hide_pagenumbers();', ws_msg('hide_page_numbers'), 'option-pageNumbers', , 'n' );

   var cs = self.pagenum_ml[0].parentNode.parentNode;
   //this happens for empty pages ; check if there are other cases
   if(cs.tagName=="P") cs = cs.parentNode; 

   /* Measure the line height and the height of an empty span */
   var ct = document.createElement("div");
   ct.setAttribute("id","my-ct");
   cs.insertBefore(ct,cs.firstChild);
   var ss = document.createElement("div"); /*we need a div, not a span*/
   ss.innerHTML=" ";     /*empty span following some text */
   ss.setAttribute("id","my-ss");
   cs.appendChild(ss);

   /* container for page numbers */
   var div_pagenums = document.createElement("div"); 
   div_pagenums.setAttribute("id","ct-pagenums");
   /* insert the container in the grandparent node, or parent, or self */
   var mcs = document.getElementById("text-wrap");
   if(!mcs) {
     if(cs.parentNode.parentNode.style.position=="relative") mcs = cs.parentNode.parentNode;
     else if(cs.parentNode.style.position=="relative") mcs = cs.parentNode; 
     else { mcs = cs; mcs.style.position = "relative"; }
   } 
   mcs.appendChild(div_pagenums);

   /* container for the highlight */
   var div_popup = document.createElement("div"); 
   var opacity="background-color:#000000;opacity:0.2;-ms-filter:alpha(opacity=20);filter:alpha(opacity=20);";
   div_popup.setAttribute("id","ct-popup");
   div_popup.style.cssText = "position:absolute;width:100%;";
div_popup.innerHTML = "
 
" +"
" +"
 
"; 
   cs.appendChild(div_popup);

   refresh_pagenumbers();

}


function refresh_pagenumbers() { 

   var ct = document.getElementById("my-ct");
   if(!ct) return;
   var ss = document.getElementById("my-ss");

   var cs = ct.parentNode;
   /* set it to relative because the highlight is of width 100% */
   cs.style.position = "relative";

   var lineheight = ss.offsetHeight; 
   var offset_h = ss.lastChild.offsetHeight;

   var linewidth = cs.offsetWidth; 
   var ct_o = get_offset(ct);
   var ct_ox = ct_o[0]; 
   var ct_oy = ct_o[1];
   var oo = get_offset(ss);
   var ox = oo[0] - ct_ox; var oy = oo[1] - ct_oy;

   var oh ="";
   for(var i=self.pagenum_ml.length-1; i>=0; i--) {
       var a = self.pagenum_ml[i];
       var num = decodeURI( a.id ); //.replace(/\./g,'%')
       if(num==".CE.9E") num="Ξ";
       if(num==".E2.80.93") num="—";
       if(num==".E2.80.94") num="—";
       var page = a.title;
       pagetitle = decodeURI( page ); //.replace('?','%3F').replace(/\.2/g,'%2').replace("%2F","/")
       pagekey = pagetitle.replace(/ /g,"_");
       var page_url = wgArticlePath.replace("$1", pagekey  );
       var ll = a.parentNode.nextSibling;
       if(ll && ll.tagName=="A" && ll.className=="new") class_str=" class=\"new\" "; else class_str="";
       var link_str = "<a href=\""+page_url+"\"" + class_str + " title=\""+pagetitle+"\">"+num+"</a>"
       if(self.proofreadpage_numbers_inline){
               a.innerHTML = " ["+link_str+"] ";
       }
       else { 

           if(a.offsetTop==0) { 
             /* if(self.proofreadpage_debug) alert("zero2 "+a.id+" "+a.parentNode.offsetTop); */
             continue;
           }
           prev_ox = ox;
           prev_oy = oy;
           a_o = get_offset(a); 
           ox = a_o[0] - ct_ox;
           oy = a_o[1] - ct_oy + offset_h;

           if(prev_oy - oy > 5) {
oh = oh + "
["+link_str+"]
"; 
           }
       }
    }
    if(!self.proofreadpage_numbers_inline) {
       var ct_pagenums = document.getElementById("ct-pagenums");
       ct_pagenums.innerHTML = oh;
   }
   pagenum_out();
   if( parseInt(GetCookie("pagenum")) == 0 ) hide_pagenumbers();

}

//fixme : this is sensitive to order (detection of containers with "relative" position) addOnloadHook(init_page_layout); addOnloadHook(init_page_numbers);

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