source: branches/gdl-frontend/src/ajax/javascripts/edit.js

//+-----------------------------------------------------------------------------
//+  Isidorus
//+  (c) 2008-2010 Marc Kuester, Christoph Ludwig, Lukas Georgieff
//+
//+  Isidorus is freely distributable under the LLGPL license.
//+  This ajax module uses the frameworks PrototypeJs and Scriptaculous, both
//+  are distributed under the MIT license.
//+  You can find a detailed description in trunk/docs/LLGPL-LICENSE.txt, and
//+  trunk/docs/LGPL-LICENSE.txt in
//+  trunk/src/ajax/javascripts/external/MIT-LICENSE.txt.
//+-----------------------------------------------------------------------------

function makeEdit(psi)
{
    var content = new Element("div", {"class" : CLASSES.content()});
    var header = new Element("h1").update("Edit a Topic");
    content.insert({"bottom" : header});
    $(CLASSES.subPage()).insert({"bottom" : content});

    try{
        var fragmentFrame = new Element("ul", {"class" : CLASSES.fragmentFrame()});
        content.insert({"bottom" : fragmentFrame});
        var liTopicSelect = new Element("li", {"class" : CLASSES.instanceOfFrame()});
        fragmentFrame.insert({"bottom" : liTopicSelect});

        // --- creates the sub-elements topic, associations and topic map id
        function innerMakeFragment(psis, constraints){
            function rSuccessHandler(xhr){
                var json = null;
                try{
                    json = xhr.responseText.evalJSON();
                }
                catch(innrErr){}

                makeFragment(liTopicSelect, psis, constraints, json);
            }
            requestFragment(psis && psis.length !== 0 ? psis[0] : null, rSuccessHandler, null)
        }
        
        function onSuccessHandler(xhr){
            var json = null;
            try{
                json = xhr.responseText.evalJSON();
            }
            catch(err){
                alert("Got bad JSON data from " + xhr.request.url + "\n\n" + err);
            }
            var edit = null;
            
            try{
                if(json === null){
                    var err = new Element("div", {"class" : CLASSES.error()}).update("There exist no valid topic instances!<br/>Please update the TMCL-model or create some new instances.");
                    liTopicSelect.insert({"bottom" : err});   
                }
                else {
                    if(!psi || psi.strip().length === 0) psi = null;
                    edit = new EditC(json.flatten().sort(), innerMakeFragment, psi);
                    liTopicSelect.insert({"bottom" : edit.getFrame()});
                }
            }
            catch(err){
                alert("There occurred an error by creating an EditC frame, please reload this page!\n\n" + err);
            }
        }
        getPsis(onSuccessHandler, null, {"instances" : true});
    }
    catch(err){
        alert("From makeEdit(): " + err);
    }
}