SysMO-DB/seek

//which links are in the source box
var sourceMap = {};
//which links are in the target box
var targetMap = {};

//which links are clicked in the source box
var checkedSourceMap = {};
//which links are clicked in the target box
var checkedTargetMap = {};
//what has been moved to the target table
var addedLinks = {};
//hash of all the original objects with their selected status
var allLinks = {};
//the cell details for each object
var allLinksData = {};

//Move all from the target to source tables.
function addAll(resource_type, source) {

    if (source == "target") {
        for(var key in allLinks[resource_type]) {
            $(resource_type +"_" + key + "_target_row").hide();
            targetMap[resource_type][key] = false;
            sourceMap[resource_type][key] = true;
            checkedTargetMap[resource_type][key] = false;

            $(resource_type + "_" + key + "_source_row").show();
            changeColour(resource_type, key, "_target_cell", false);
            changeColour(resource_type, key, "_source_cell", false);
            allLinks[resource_type][key] = false;
        }
        removeChildren(resource_type +'_hidden');
        for (var key in targetMap[resource_type]) {
            if (targetMap[resource_type][key] == true) {
                var hidden_input = new Element('input',{'id':resource_type+'[]','name': resource_type+'[]','type':'hidden'});
                hidden_input.value = key;
                hidden_input.text = key;
                $(resource_type +'_hidden').insert(hidden_input);
            }
        }
    } else {
            for(var key in allLinks[resource_type]) {
                hide_row = resource_type +"_" + key + "_source_row";
                $(hide_row).hide();
                targetMap[resource_type][key] = true;
                sourceMap[resource_type][key] = false;
                checkedSourceMap[resource_type][key] = false;

                changeColour(resource_type, key, "_source_cell", false);
                $(resource_type + "_" + key + "_target_row").show();
                changeColour(resource_type, key, "_target_cell", false);
                allLinks[resource_type][key] = false;

            }
            removeChildren(resource_type +'_hidden');
            for (var key in targetMap[resource_type]) {
                if (targetMap[resource_type][key] == true) {
                    var hidden_input = new Element('input',{'id':resource_type+'[]','name': resource_type+'[]','type':'hidden'});
                    hidden_input.value = key;
                    hidden_input.text = key;
                    $(resource_type +'_hidden').insert(hidden_input);
                }
            }
    }
}

function addSelected(resource_type, source) {
    if (source == "target") {
        for(var key in checkedTargetMap[resource_type]) {
            if (allLinks[resource_type][key] == true) {

                $(resource_type +"_" + key + "_target_row").hide();
                targetMap[resource_type][key] = false;
                sourceMap[resource_type][key] = true;
                checkedTargetMap[resource_type][key] = false;

                $(resource_type + "_" + key + "_source_row").show();
                changeColour(resource_type, key, "_target_cell", false);
                changeColour(resource_type, key, "_source_cell", false);
                allLinks[resource_type][key] = false;
            }
        }
        removeChildren(resource_type +'_hidden');
        for (var key in targetMap[resource_type]) {
            if (targetMap[resource_type][key] == true) {
                var hidden_input = new Element('input',{'id':resource_type +'[]','name': resource_type +'[]','type':'hidden'});
                hidden_input.value = key;
                hidden_input.text = key;
                $(resource_type +'_hidden').insert(hidden_input);
            }
        }
    } else {
        for(var key in checkedSourceMap[resource_type]) {
             if (allLinks[resource_type][key] == true) {
                hide_row = resource_type + "_" + key + "_source_row";
                $(hide_row).hide();
                targetMap[resource_type][key] = true;
                sourceMap[resource_type][key] = false;
                checkedSourceMap[resource_type][key] = false;

                changeColour(resource_type, key, "_source_cell", false);
                $(resource_type + "_" + key + "_target_row").show();
                changeColour(resource_type, key, "_target_cell", false);
                allLinks[resource_type][key] = false;
            }
        }
        removeChildren(resource_type +'_hidden');
        for (var key in targetMap[resource_type]) {
            if (targetMap[resource_type][key] == true) {
                var hidden_input = new Element('input',{'id':resource_type+'[]','name': resource_type+'[]','type':'hidden'});
                hidden_input.value = key;
                hidden_input.text = key;
                $(resource_type +'_hidden').insert(hidden_input);
            }
        }
    }
}

//when initialising keep a list of all the items for a
//resource type and their details
function addInstanceOfObject(resource_type, id, details) {
    var link_hash = allLinks[resource_type];
    if (link_hash == null) {
        link_hash = {};
        allLinks[resource_type] = link_hash;
        var source_map = {};
        checkedSourceMap[resource_type] = source_map
        var in_source_map = {};
        sourceMap[resource_type] = in_source_map
    }
    link_hash[id] = false;
    var link_data = allLinksData[resource_type];
    if (link_data == null) {
        link_data = {};
        allLinksData[resource_type] = link_data;
        var target_map = {};
        checkedTargetMap[resource_type] = target_map
        var in_target_map = {};
        targetMap[resource_type] = in_target_map
    }
    link_data[id] = details;
    //allLinks[id] = false;
    //allLinksData[id] = details;
}

//Change the background colour of the item depending
//on whether it is clicked or not
function changeColour (resource_type, id, source_or_target, change) {
    if (change){
        $(resource_type +"_"+id + source_or_target).setStyle({backgroundColor: '#900'});
    } else {
        $(resource_type +"_"+id + source_or_target).setStyle({backgroundColor: '#FFFFFF'});
    }
}

//Mark the item in the appropriate box box with id as being clicked/unclicked by changing its
//status in the checked Source/Target Map to true or false.
function checkItem(id, source, resource_type) {
    if (source == "target") {
        if (allLinks[resource_type][id] == true){
            checkedTargetMap[resource_type][id] = false;
            allLinks[resource_type][id] = false;
        } else {
            checkedTargetMap[resource_type][id] = true;
            allLinks[resource_type][id] = true;
        }
        changeColour(resource_type, id, "_target_cell", allLinks[resource_type][id]);
    } else {
        if (allLinks[resource_type][id] == true){
            checkedSourceMap[resource_type][id] = false;
            allLinks[resource_type][id] = false;
        } else {
            checkedSourceMap[resource_type][id] = true;
            allLinks[resource_type][id] = true;
        }
        changeColour(resource_type, id, "_source_cell", allLinks[resource_type][id]);
    }
}

function removeChildren(name) {
    $(name).childElements().each(function(e) {
            e.remove();
        });
}