base-datalet.html 9.28 KB
<!--
@license
    The MIT License (MIT)

    Copyright (c) 2015 Dipartimento di Informatica - Universit� di Salerno - Italy

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    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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    THE SOFTWARE.
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<!--
* Developed by :
* ROUTE-TO-PA Project - grant No 645860. - www.routetopa.eu
*
-->

<link rel="import" href="../../bower_components/polymer/polymer.html">

<!--
The `base-datalet` is the base component that includes datalet footer (with information about dataset domain and ROUTE-TO-PA project).
Base datalet includes polymer.html and the BaseDataletBehaviors javascript file that define the datalet workcycle and the datalet base properties : dataUrl, fields and data.
Every datalet must include this one in its `<template>` section.

Example :

    <dom-module id="every-datalet">
        <template>
            ...
            <base-datalet data-url="{{dataUrl}}" fields="{{fields}}"></base-datalet>
            ...
        </template>
    </dom-module>

@element base-datalet
@status v0.1
@homepage
@group datalets
-->

<dom-module id="base-datalet">
    <template>
        <style>
            a {
                color: #00BCD4;
                text-decoration: none;
            }
            a:hover {
                color: #2db395;
                text-decoration: underline;
            }
            #base_datalet_container {
                font-family: 'Roboto', 'Helvetica Neue', Helvetica, Arial, sans-serif;
                padding: 16px;
            }
            #base_datalet_rtp {
                display: flex;
                padding-top: 8px;
            }
            #rtp {
                padding-top: 8px;
                padding-right: 8px;
                font-size: small;
            }
            #rtpalogo {
                height:32px;
                width: 32px;
            }
            #base_datalet_spin {
                height:256px;
                width: 256px;
                position: relative;
                center: center;
                width: 100%;
             }
        </style>

        <div id="base_datalet_imgWaitDatalet">
                <img id="base_datalet_spin" src="static/images/spin.svg">
        </div>

        <div id="base_datalet_container">
            <!--<b>Source:</b><span id="domain"></span>-->
            <!--<b></b><span id="domainPage"></span>-->

            <b>Source:</b> <a id="base_datalet_source"></a> ( <a id="base_datalet_link">dataset</a> )

            <div id="base_datalet_rtp">
                <div id="rtp">Powered by ROUTE-TO-PA</div>
                <div><a href="http://www.routetopa.eu/"><img id="rtpalogo" src="static/images/rtpalogo.png" ></a></div>
            </div>
        </div>

        <!--<b>Source : </b><span id="domain"></span><br><br>-->
        <!--<div id="footer">Powered by Route-to-PA&nbsp&nbsp<a href="http://routetopa.eu/"><img src="static/images/rtpalogo.png" id="rtpalogo"></a></div><br>-->
    </template>

    <script src="static/js/BaseDataletBehavior.js"></script>
    <script src="static/js/WorkcycleBehavior.js"></script>

    <script>
        BaseDatalet = Polymer({
            is: 'base-datalet',
            objectDatalet: {
                /**
                 * It contains the json data from async xhr call returned from core-ajax core component
                 *
                 * @attribute json_resultDatalet
                 * @type object
                 * @default 'null'.
                 */
                json_resultDatalet: {
                    type: Object,
                    value: {}
                }
            },
            /**
             * It is called after the element�s template has been stamped and all elements inside the element�s local
             * DOM have been configured (with values bound from parents, deserialized attributes, or else default values)
             * and had their ready method called.
             *
             * Extract
             *   1) the dataset domain
             *   2) the page of a datalet
             *   from the entire URL and set the text content of the datalet footer.
             * @method ready
             */
            ready: function(){



                var urlDatalet;
                if(this.dataUrl != undefined){

                    var apiIdResource = "resource_show?id=";

                    //Resourceid of a datalet
                    var query = this.dataUrl.substring(this.dataUrl.indexOf("?"), this.dataUrl.length);
                    var params  = this.decomponeQueryString(query);
                    resultIdDatalet = params["resource_id"];

                    //cKan organized with or not catalog
                    queryInitial = this.dataUrl.substring(0,  this.dataUrl.indexOf("api"));
                    queryFinal = this.dataUrl.substring(this.dataUrl.indexOf("api"),  this.dataUrl.indexOf("datastore_search"));

                    urlDatalet = queryInitial +  queryFinal + apiIdResource + resultIdDatalet;
                    urlSource = this.dataUrl.split("/")[0] + "//" + this.dataUrl.split("/")[2];

//                    this.$.domainPage.innerHTML = '<a href=' + urlSource +  ' target=' + "_blank>" + urlSource + '</a>'+ "." ;

                    this.$.base_datalet_source.innerHTML = urlSource;
                    this.$.base_datalet_source.setAttribute("href", urlSource);

                    this.requestDataletData(urlDatalet);
                }
            },
            /**
             * Set the domain url to show in the footer
             */
            setDomain: function(url){
                this.$.domain.textContent = url;
            },
            /**
             * Get the (key, value)  query string parameters
             **/
            decomponeQueryString: function (querystring) {
            // remove any preceding url and split
            querystring = querystring.substring(querystring.indexOf('?')+1).split('&');
            var params = {}, pair, d = decodeURIComponent;
            // march and parse
            for (var i = querystring.length - 1; i >= 0; i--) {
                pair = querystring[i].split('=');
                params[d(pair[0])] = d(pair[1]);
            }
            return params;
            },
            /**
             * Make an AJAX call to the dataset URL to retrieve package_id
             *
             * @method urlDatalet
             */
            requestDataletData: function(urlDatalet){
                var comp = this;
                $.ajax({
                    url: urlDatalet, //url con package
                    dataType: "json",
                    success: function(e){
                        comp.handleDataletResponse(e);
                    }
                });
            },
            /**
             * Called when core-ajax component receive the json data from called url.
             *
             * @method handleResponse
             */
            handleDataletResponse: function(e) {
                this.objectDatalet.json_resultDatalet.value = e;

                //packageId of a give datalet
                packageIdDatalet = this.objectDatalet.json_resultDatalet.value.result.package_id;
                resourceId = this.objectDatalet.json_resultDatalet.value.result.id;

                //url complete of download
                urlDatasetDownload = this.objectDatalet.json_resultDatalet.value.result.url;

                if(this.dataUrl != undefined){
                    //static url
                    lastStringResourceId =  this.dataUrl.split("/")[5];
                    resourceId  = lastStringResourceId.split('=')[1];
                    var urlDatalet = this.dataUrl.split("/")[0]+ "//" + this.dataUrl.split("/")[2]  + "/dataset/" + packageIdDatalet +"/resource/" +resourceId;

                    urlDatalet = urlDatasetDownload.replace(/\/download\/.*/, '');
                    urlSource =  this.dataUrl.split("/")[0] + "//" + this.dataUrl.split("/")[2];

                    this.$.base_datalet_link.setAttribute("href", urlDatalet);
//                    this.$.domainPage.innerHTML += " (" + ' <a href=' + urlDatalet +  ' target=' + "_blank>" + "Dataset's page" + '</a>' + " )";

                }
            }
        });
    </script>
</dom-module>