SGH / COMPONENTS

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@license
    The MIT License (MIT)

    Copyright (c) 2015 Dipartimento di Informatica - Università 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
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    The above copyright notice and this permission notice shall be included in
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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="../../bower_components/paper-styles/color.html">

<!--
`text-element-controllet` is a text area with heading. It fires an event when the text value is modified. This event can be useful when you have to monitor many af this elements.


Example:

    <text-element-controllet heading="myField"
                             description="myFieldDescription"
                             number="1">
    </text-element-controllet>


@element text-element-controllet
@status beta
@homepage
@group controllets
-->


<dom-module id="text-element-controllet">
    <template>

        <style is="custom-style">

            .avatar {
                display: inline-block;
                position: relative;
                float: left;
                height: 1.7em;
                width: 1.7em;
                border-radius: 50%;
                background: var(--paper-blue-500);
                color: white;
                line-height: 2em;
                font-size: 0.74em;
                text-align: center;
            }

            .heading{
                /*width: 12.5em;*/
            }

            .big {
                display: inline-block;
                position: relative;
                float: left;
                font-size: 1em;
                padding: 0.5em 0.25em 0.5em;
                color: var(--google-grey-500);
            }

            .medium {
                position: relative;
                float: left;
                font-size: 0.8125em;
                padding-bottom: 0px;
                display: inline-block;
                width: 32.5em;
                padding-left: 10px;
            }


        </style>

        <div>
            <div>
                <div class="heading">
                    <div class="avatar">{{number}}</div>
                    <div class="medium">{{description}}</div>
                </div>
            </div><br>
            <paper-textarea id="text" label="{{heading}}" floatingLabel value="{{value}}"></paper-textarea>
        </div>

    </template>

    <script>

        Polymer({

            is: 'text-element-controllet',

            /**
             * Fired when the user change the text value
             *
             * @event text-element-controllet_content-changed
             */

            properties: {
                /**
                 * It's the name of the elelent
                 *
                 * @attribute heading
                 * @type Strig
                 * @default 'Heading'
                 */
                heading : {
                    type : String,
                    value : "Heading"
                },
                /**
                 * It's the description of the elelent
                 *
                 * @attribute description
                 * @type Strig
                 * @default 'Description'
                 */
                description: {
                    type: String,
                    value: "Description"
                },
                /**
                 * It's a string value the represent the current number of elelent. It will be use in the label section.
                 *
                 * @attribute number
                 * @type Strig
                 * @default '0'
                 */
                number: {
                    type: String,
                    value : "0"
                },

                value :{
                    type: String,
                    value: "",
                    observer : '_valueChanged'
                },

                timer :{
                    type: Number,
                    value : 0
                }
            },
            /**
             * Callback related to text change
             *
             * @method _valueChanged
             *
             * @param {Event} e
             */
            _valueChanged : function(oldvalue, newValue){
                clearTimeout (this.timer);
                //Firefox stuff
                var _this = this;
                this.timer = setTimeout(function(){_this.fire('text-element-controllet_content-changed', {newValue: newValue})}, 2000);
            },
            /**
             * It returns the value in text area
             *
             * @method getValue
             */
            getValue : function(){
                return this.$.text.value;
            }
        });

    </script>

</dom-module>