datalets/google_piechart-datalet/google_piechart-datalet.html

<!--
@license
    The MIT License (MIT)
    Copyright (c) 2015 Dipartimento di Informatica - Universit� di Salerno - Italy
    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:
    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    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">
<link rel="import" href="../base-ajax-json-jsonpath-datalet/base-ajax-json-jsonpath-datalet.html">
<link rel="import" href="../../bower_components/google-chart/google-chart.html"/>
<dom-module id="google_piechart-datalet">
    <template>
        <style is="custom-style">
            #google_piechart{
                height: 100%;
                width: 100%;
            }
        </style>
        <google-chart
                id='google_piechart'
                type='pie'
                cols={{cols}}
                rows={{rows}}
                options={{options}}>
        </google-chart>
        <base-ajax-json-jsonpath-datalet data-url="{{dataUrl}}" fields="{{fields}}" data="{{data}}"  export_menu="{{export_menu}}"></base-ajax-json-jsonpath-datalet>
    </template>
    <script>
        var GooglePiechartBehavior = {
            presentData : function(){
                if(!this._dataIsValid())
                    return;
                var cols = [{"label": this.data[0].name, "type": typeof this.data[0].data[0]}, {"label": this.data[1].name, "type": typeof this.data[1].data[0]}];
                var rows = [];
                for(var i=0; i<this.data[0].data.length; i++)
                {
                    var row = [this.data[0].data[i], this.data[1].data[i]];
                    rows.push(row);
                }
                this._updateOptions();
                this._component.cols = cols;
                this._component.rows = rows;
            },
            _updateOptions : function(){
                if(!this._dataIsValid())
                    return;
                var options = this._component.options;
                options["title"] = this._component._title;
                options["pieHole"] = this._component.pieHole;
                options["is3D"] = this._component.is3D;
                this._component.options = options;
                this._component.$.google_piechart.drawChart();
            },
            _dataIsValid : function(){
                if(!this.data[0] || !this.data[1] || typeof this.data[1].data[0] != "number")
                    return false;
                return true;
            }
        };
        PiechartDatalet = Polymer({
            is: 'google_piechart-datalet',
            properties: {
                behavior : {
                    type : Object,
                    value : undefined
                },
                //inputs
                cols: {
                    type: Array,
                    value:undefined
                },
                rows: {
                    type: Array,
                    value: undefined
                },
                //options
                options: {
                    type: Object,
                    value: {"sliceVisibilityThreshold": .03}
                },
                _title: {//_?
                    type: String,
                    value: ""
                },
                is3D: {
                    type: Boolean,
                    value: false
                },
                pieHole: {
                    type: Number,
                    value: 0
                },
                /**
                 * Control the export menu
                 * xxxx BITMASK. FROM RIGHT : HTML, PNG, RTF, MY SPACE (eg. 1111 show all, 0000 hide all)
                 *
                 * @attribute export_menu
                 * @type Number
                 * @default 15
                 */
                export_menu : {
                    type  : Number,
                    value : 15 // xxxx BITMASK. FROM RIGHT : HTML, PNG, RTF, MY SPACE (eg. 1111 show all, 0000 hide all)
                }
            },
            observers: [
                '_updateOptions(_title, is3D, pieHole)'
            ],
            ready : function(){
                this.behavior =  $.extend(true, {}, BaseDataletBehavior, WorkcycleBehavior, AjaxJsonJsonPathBehavior, GooglePiechartBehavior);
                this.async(function(){this.behavior.init(this)}, 0);
            },
            _updateOptions : function(){
//                this.async(function(){this.behavior._updateOptions()}, 1000);
                if(this.behavior)//false on ready
                    this.behavior._updateOptions();
            }
        });
    </script>
</dom-module>