js/xataface/modules/htmlreports/RelationshipSelector.js

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/*
 * Xataface htmlreports Module
 * Copyright (C) 2011  Steve Hannah <steve@weblite.ca>
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 * 
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 */
 
//require <jquery.packed.js>
//require <xatajax.core.js>
//require <xatajax.ui.tk/Component.js>
//require <xataface/modules/htmlreports/__init__.js>

(function(){
        var $ = jQuery;
        
        var Component = XataJax.ui.tk.Component;
        window.xataface.modules.htmlreports.RelationshipSelector = RelationshipSelector;
        
        function RelationshipSelector(o){
                XataJax.extend(this, new Component(o));
                XataJax.publicAPI(this, {
                        setSelectedRelationship: setSelectedRelationship,
                        getSelectedRelationship: getSelectedRelationship,
                        update: update
                });
                
                this.table = o.table;
                this.el = document.createElement('div');
                
                
                init(this);
        
        }
        
        
        function init(sb){
                sb.select = document.createElement('select');
                var q = {
                        '-table': sb.table,
                        '-action': 'htmlreports_schemabrowser_getschema'
                
                };
                
                $.ajax({
                        url: DATAFACE_SITE_HREF,
                        data: q,
                        success: function(res){
                                try {
                                        if ( res.code == 200 ){
                                                $.each(res.schema, function(){
                                                        if ( this['data-key'] == 'relationships' ){
                                                                var rels = {};
                                                                $.each(this.children, function(){
                                                                        rels[this.attr['xf-htmlreports-relationshipname']] = this.data;
                                                                });
                                                                fillSelect(sb, rels);
                                                                sb.trigger('loaded', {
                                                                        relationshipSelector: sb
                                                                });
                                                        }
                                                });
                                        }
                                        else if ( res.message ) throw res.message;
                                        else throw 'Faild to load fields.  See server log for details.';
                                } catch(e){
                                        alert(e);
                                }
                        }
                                
                });
                var el = sb.el;
                $(el).append(sb.select);
                
                $(sb.select).change(function(){
                        var sel = this;
                        sb.trigger('relationshipSelected', {
                                relationshipSelector: sb,
                                relationshipName: $(sel).val(),
                                relationshipLabel: $(sel.options[sel.selectedIndex]).text()
                        });
                });
        
        }
        
        function fillSelect(sb, options){
                $(sb.select).empty();
                $(sb.select).append($('<option></option').text('Select Relationship'));
                $.each(options, function(key,val){
                        $(sb.select).append($('<option></option>').attr('value',key).text(val));
                });     
        }
        
        
        function setSelectedRelationship(rel){
                $(this.select).val(rel);
        }
        
        function getSelectedRelationship(){
                return $(this.select).val();
        }
        
        function update(){
                
                this.getSuper(Component).update();
                var el = this.getElement();
                $(el).children().detach();
                $.each(this.getChildComponents(), function(){
                        $(el).append(this.getElement());
                });
        
                $(el).append(this.el);
        }
        
        
        
        
        
})();