var repoindex = (function(repoindex) {

    var GroupEntry = {};
    GroupEntry.prototype = new repoindex.Entry();
    GroupEntry.prototype.constructor = GroupEntry;
    GroupEntry = function(groupName, groupInfo) {
        repoindex.Entry.prototype.constructor.call(this, groupName, groupInfo);

        this.initTableRow = function() {
            this.rowElement.addCell(this.name);
            this.rowElement.addCell(this.info.repo);
            var packagesCellElement = document.createElement("td");
            repoindex.setPackageNames(packagesCellElement, this.info.packages);
            this.rowElement.appendChild(packagesCellElement);
        };

        this.initTableRow();
    };

    repoindex.GroupEntryManager = {};
    repoindex.GroupEntryManager.prototype = new repoindex.EntryManager();
    repoindex.GroupEntryManager.prototype.contstructor = repoindex.GroupEntryManager;
    repoindex.GroupEntryManager = function(pagination, repoEntries) {
        repoindex.EntryManager.prototype.constructor.call(this, GroupEntry, document.getElementById("groups"), pagination, repoEntries);
        
        this.entryName = "group";
        this.entryNamePlural = "groups";
        this.containerName = "repository";
        this.containerNamePlural = "repositories";
        this.getContainerQuantity = repoindex.entryManagerGetRepoQuantity;

        this.addEntry = function(repoName, groupName, packages) {
            var entry = new GroupEntry(groupName, {
                repo: repoName,
                name: groupName,
                packages: packages
            });
            entry.index = this.entries.length;
            this.entries.push(entry);
        };

        // handle a page selection
        this.pagination.pageSelected = function(pageElement) {
            var mgr = this.entryManager;
            // remove elements from previously selected page
            mgr.entryContainer.wipeChildren();
            // if there is no page because there are no package entries, pageElement is null
            if(pageElement) {
                // show elements of selected page
                pageElement.forRange(function(i) {
                    var entry = mgr.filteredEntries[i];
                    entry.add(mgr.entryContainer);
                }, mgr.filteredEntries.length);
            }
        };

        this.infoBox = document.getElementById("groups_info");

    };

    return repoindex;

})(repoindex || {});