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var contentViewer_current = "top";
/*
This function updates the ContentViewer "Unview" field
after the user chooses to view or stop viewing something
*/
function updateContentViewerNoRequest()
{
var form = document.getElementById("ContentViewerForm");
var view = form.View;
var unview = form.Unview;
// first updated the list of viewed MEs
updateViewedList();
// then update the Unview menu, based on the updated list:
unview.options.length = 0;
unview.options[0] = new Option("", "", true, true);
var viewed_from_current = getViewedFromDir(contentViewer_current);
for (var i = 0; i < viewed_from_current.length; i++)
{
unview.options[i + 1] = new Option(viewed_from_current[i], viewed_from_current[i], false, false);
}
unview.selectedIndex = 0;
// clear the lingering selection from the "View" menu
view.selectedIndex = 0;
}
function updateViewedList()
{
var form = document.getElementById("ContentViewerForm");
var view = form.View;
var unview = form.Unview;
if (view.value != "")
{
var addition = view.value;
viewedListAdd(addition);
}
else if (unview.value != "")
{
var removal = unview.value;
viewedListRemove(removal);
}
}
//*************************************************************/
/*
These functions add/remove something to/from the viewed_l.
*/
function viewedListAdd(addition)
{
for (i = 0; i < current_display.viewed_l.length; i++)
{
if (addition == current_display.viewed_l[i])
{
return;
}
}
current_display.viewed_l[current_display.viewed_l.length] = addition;
}
function viewedListRemove(removal)
{
for (i = 0; i < current_display.viewed_l.length; i++)
{
if (removal == current_display.viewed_l[i])
{
current_display.viewed_l.splice(i, 1);
}
}
}
//*************************************************************/
function makeContentViewerRequest()
{
url = getContentViewerRequestURL();
makeRequest(url, updateContentViewer);
}
//*************************************************************/
function getContentViewerRequestURL()
{
var form = document.getElementById("ContentViewerForm");
var open = form.Open;
url = getApplicationURL();
if (open.value != "")
{
url = url + "/Request";
url = url + "?RequestID=ContentsOpen";
url = url + "&" + "Current=" + contentViewer_current;
url = url + "&" + "Open=" + open.value;
}
return url;
}
//*************************************************************/
/*
This function updates the fields of the content viewer widget
after an "ContentViewerOpen" request.
*/
function updateContentViewer()
{
if (http_request.readyState == 4)
{
if (http_request.status == 200)
{
var xmldoc;
var subdirs_l;
var view_l;
var unview_l;
// Load the xml elements on javascript lists:
if (http_request != false)
{
xmldoc = http_request.responseXML;
// set the contentViewer_current first:
contentViewer_current = xmldoc.getElementsByTagName('current').item(0).firstChild.data;
subdirs_l = xmldoc.getElementsByTagName('open');
view_l = xmldoc.getElementsByTagName('view');
}
// get references to the form elements so that we can update them
var form = document.getElementById("ContentViewerForm");
var open = form.Open;
var view = form.View;
var unview = form.Unview;
// Update the Open menu:
open.options.length = 0;
open.options[0] = new Option("", "", true, true);
open.options[1] = new Option("top", "top", false, false);
for(var i = 0; i < subdirs_l.length; i++)
{
var to_open = subdirs_l.item(i).firstChild.data;
open.options[i + 2] = new Option(to_open, to_open, false, false);
}
open.selectedIndex = 0;
// Update the View menu:
view.options.length = 0;
view.options[0] = new Option("", "", true, true);
for(var i = 0; i < view_l.length; i++)
{
var to_view = view_l.item(i).firstChild.data;
view.options[i + 1] = new Option(to_view, to_view, false, false);
}
view.selectedIndex = 0;
// Update the Unview menu:
unview.options.length = 0;
unview.options[0] = new Option("", "", true, true);
var viewed_from_current = getViewedFromDir(contentViewer_current);
for (var i = 0; i < viewed_from_current.length; i++)
{
unview.options[i + 1] = new Option(viewed_from_current[i], viewed_from_current[i], false, false);
}
unview.selectedIndex = 0;
}
}
}
//*************************************************************/
/*
This function returns an array with all files in viewed_l that
also reside in the directory dir, supplied as a parameter.
*/
function getViewedFromDir(dir)
{
var viewed_l = current_display.viewed_l;
var in_dir_l = new Array();
for (var i = 0; i < current_display.viewed_l.length; i++)
{
var entry = viewed_l[i];
var index = entry.lastIndexOf("/");
if (entry.substring(0, index) == dir)
{
in_dir_l[in_dir_l.length] = entry;
}
}
return in_dir_l;
}
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