Source: tabs.js

/**
 * Tabs Component<BR>
 * <BR><BR><img src=/tk/lib/components/w/img/tabs.png width=30% style="border:1px lime dashed;padding:20px">
 * <BR><BR><a href="/tk/lib/components/w/html/tabs.html">DEMO</a>
 */
class Tabs extends HTMLElement {
    constructor() {
        wc.group("Tabs.constructor")
	
        super();

        wc.groupEnd();
    };
    
    /**
     * Set observable values here. When Changed, attributeChangedCallback is invoked
     * @observedAttributes
     */
    static get observedAttributes() {
        wc.group("Tabs.observedAttributes");

	this.observables = [];

        wc.groupEnd();
        return this.observables;
    };

    /**
     * Called when this is attached to DOM
     * @connectedCallback. 
     */
    connectedCallback() {
        wc.group("Tabs.connectedCallback")
	
	let self = this;

	// ADD A RANDOM ID IF NONE EXIST
	if (!this.id) {
	    this.id = this.constructor.name.toLowerCase() + "-" + wc.uid();
	}

	// GET PROPERTIES AND INTERESTING ELEMENTS
	this._initialize();

	// ADD COMPONENT MARKTOP
	this.innerHTML = this._template()

	if (this.properties.cfg) {
	    this.configure();
	}

	// SUBSCRIBE TO REQUESTS FROM CLIENTS
	wc.subscribe(this.id, function(e) {
	    self._request(e)
	});

	// ADD STATS AND OTHER FINAL STUFF
	this._finalize();

	ga('send', {'hitType': 'event','eventCategory': 'wc-connected','eventAction': 'connected','eventLabel': this.properties.cname, 'eventValue':JSON.stringify({'env':wcENV,'app':wcAPP,'url':wcURL})});

        wc.groupEnd();
    };

    /**
     * Initial Markup
     * @private
     * @_template
     */
    _template() {
        wc.group("Tabs.template");
	
	var temp = `
        <div class="container-fluid">
	    <div class="row">
		<div class="col-sm-12 wc-tabs-top">
		    TOP
		</div>

		<div class="wc-tabs-lhs">
		    LHS
		</div>

		<div class="wc-tabs-mid w-100">
		    MID
		</div>

		<div class="wc-tabs-rhs">
		    RHS
		</div>

		<div class="col-sm-12 wc-tabs-bot">
		    BOT
		</div>
	    </div>`

	wc.wait4(".wc-tabs-lhs", () => {
	    this.top = this.querySelector(".wc-tabs-top")
	    this.bot = this.querySelector(".wc-tabs-bot")
	    this.lhs = this.querySelector(".wc-tabs-lhs")
	    this.rhs = this.querySelector(".wc-tabs-rhs")
	    this.mid = this.querySelector(".wc-tabs-mid")

	    $(".wc-tabs-top, .wc-tabs-bot, .wc-tabs-lhs, .wc-tabs-rhs").hide();
	});

        wc.groupEnd();
        return temp;
    };

    /**
     * Called with .setAttribute(...) function call
     * @attributeChangedCallback
     */
    attributeChangedCallback(attr, oldval, newval) {
        wc.group("Tabs.attributeChangedCallback:", attr, oldval, newval);

	this.properties = this.properties || [];

	let obs = Tabs.observedAttributes;

	for (let i = 0; i < obs.length; i++) {
	    if (newval) {
		this.properties[obs[i]] = newval;
	    }
	}
	
	// YOUR CODE FOR CHANGES GO HERE (MAYBE NULL FIRST TIME THROUGH)
	try {
	    switch(attr) 
	    {
		case "header":
		//this.querySelector("h1").innerHTML = newval;
		break;
		
		default:
		break;
	    }
	} catch(e) {
	    wc.warn(e.name + ' > ' + e.message);
	}

        wc.groupEnd();
    };

    /**
     * Stores DOM elements of interest for future use
     * @private
     * @_fetchElements
     */
    _fetchElements() {
	wc.group("Tabs._fetchElements");
	
	this.dom = this.dom || [];
	this.dom.content = this.innerHTML;

	wc.groupEnd();
    };

    /**
     * Component attributes are _fetched and defaults are set if undefined
     * @private
     * @_fetchAttributes
     */
    _fetchAttributes() {
	wc.group("Tabs._fetchAttributes");
	
	this.properties = {
	    uparam	: "",
	    cname	: "Tabs",
	    author	: "Mel M. Heravi, Ph.D.",
	    version	: "1.0",
	    show	: 0,
	    cols	: "2,10"
	};
	
	// SAVE WIDGET SPECIFIC PROPERTIES
	this.propertiesW = [];
	
	// SAVE ALL OTHER PROPERTIES
	let attrs = wc.getAttributes(this)
	
 	for (var key in attrs) {
	    let attr = this.getAttribute(key) || this.properties.key;
	    this.properties[key]  = this.getAttribute(key);
	    this.propertiesW[key] = this.getAttribute(key);
	    wc.log(key + ": " + attrs[key]);
	}

	// SET ALL INITIAL ATTRIBUTES
 	for (var key in this.properties) {
	    switch(key) 
	    {
		case "header":
		break;
		
		default:
		break;
	    }
	}

	wc.log("ATTRIBUTES: ", this.properties);

	wc.groupEnd();
    };

    /**
     * configure the instance object and artifacts
     * @configure
     * @param {string} data use data if exist else use 'this.properties.cfg' parameter
     */
    configure(data) {
	wc.group("Tabs.configure:", data);

	// IF JSON VARIABLE (data) IS PROVIDED
	if (data) {
	    this._process(data);
	} else {
	    let self = this;

	    $.getJSON(this.properties.cfg, function(data) {
		self._process(data);
	    }).fail(function(jqXHR, textStatus, errorThrown) {
		alert("ERROR: INCOMING TEXT " + jqXHR.responseText);
	    });
	}

	wc.groupEnd();
    };

    /**
     * _process the instance object and artifacts
     * @private
     * @_process
     */
    _process(data) {
	wc.group("Tabs._process:", data);
	
	switch(this.properties.side) 
	{
	    case "top":
	    this._top(data);
	    break;

	    case "bot":
	    this._bot(data);
	    break;

	    case "lhs":
	    this.cols = this.properties.cols.split(",");
	    this._lhs(data);
	    break;

	    case "rhs":
	    this.cols = this.properties.cols.split(",");
	    this._rhs(data);
	    break;
	}

	wc.groupEnd();
    };

    /**
     * @private
     * @_top
     */
    _top(data) {
	wc.group("Tabs._top");

	let self = this;

	$(this.top).show();

	this.mid = this.querySelector(".wc-tabs-mid");

	if (this.properties.cfg) {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev" cfg="${this.properties.cfg}"></wc-pager>`);
	} else {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev"></wc-pager>`);

	    wc.wait4(`wc-pager`, function() {
		let tmp = self.querySelector(`wc-pager`);
		tmp.configure(data);
	    });
	}

	// PAGER HANDLE
	let str = `<ul class="nav nav-tabs">`;

	let num =0;
	for (var key in data) {
	    var p = data[key]
	    str += `<a tab-num="${num++}" page="${data[key].page}" class="nav-link" href="#!">${data[key].label}</a>`
	}	    

	str += "</ul>"

	$(this.top).html(str);

	$(`#${this.id} [tab-num=${this.properties.show}]`).addClass("active");

	wc.wait4("wc-pager", () => {
	    this.pager = this.querySelector("wc-pager");
	    this.pager.show($(`#${this.id} [tab-num="${this.properties.show}"]`).attr("page"));

	    let as = this.querySelectorAll("ul a");

	    $(as).on("click", function() {
		$(as).removeClass("active");
		$(this).addClass("active");

		let tn = $(this).attr("tab-num");
		let pg = $(this).attr("page");
		self.pager.show(pg);
	    });
	});

	wc.groupEnd();
    };

    /**
     * @private
     * @_bot
     */
    _bot(data) {
	wc.group("Tabs._bot");

	let self = this;

	$(this.bot).show();

	this.mid = this.querySelector(".wc-tabs-mid");

	if (this.properties.cfg) {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev" cfg="${this.properties.cfg}"></wc-pager>`);
	} else {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev"></wc-pager>`);

	    wc.wait4(`wc-pager`, function() {
		let tmp = self.querySelector(`wc-pager`);
		tmp.configure(data);
	    });
	}

	wc.wait4("wc-pager", () => {
	    this.pager = this.querySelector("wc-pager");
	    this.pager.configure(data);
	});

	// PAGER HANDLE
	let str = `<ul class="nav nav-tabs">`;

	let num =0;
	for (var key in data) {
	    var p = data[key]
	    str += `<a tab-num="${num++}" page="${data[key].page}" class="nav-link" href="#!">${data[key].label}</a>`
	}	    

	str += "</ul>"

	this.top = this.querySelector(".wc-tabs-bot");
	$(this.top).html(str);

	$(`#${this.id} [tab-num=${this.properties.show}]`).addClass("active");

	wc.wait4("wc-pager", () => {
	    this.pager = this.querySelector("wc-pager");

	    let as = this.querySelectorAll("ul a");
	    $(as).on("click", function() {
		$(as).removeClass("active");
		$(this).addClass("active");

		let tn = $(this).attr("tab-num");
		let pg = $(this).attr("page");
		self.pager.show(pg);
	    });

	    this.pager.show($(`#${this.id} [tab-num=${this.properties.show}]`).attr("page"));
	});

	wc.groupEnd();
    };

    /**
     * @private
     * @_lhs
     */
    _lhs(data) {
	wc.group("Tabs._lhs");

	let self = this;

	$(this.lhs).show();

	// ADD PAGER
	if (this.properties.cfg) {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev" cfg="${this.properties.cfg}"></wc-pager>`);
	} else {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev"></wc-pager>`);

	    wc.wait4(`wc-pager`, function() {
		let tmp = self.querySelector(`wc-pager`);
		tmp.configure(data);
	    });
	}

	$(this.lhs).addClass("col-sm-" + this.cols[0]);
	$(this.mid).addClass("col-sm-" + this.cols[1]);

	let str = `<ul class="list-group list-group-flush">`;

	let n = 0;
	for (var key in data) {
	    str += `<li tab-num="${n++}" page="${data[key].page}" id="wc-tabs-${data[key].id}" class="list-group-item list-group-item-action" url="${data[key].url}">${data[key].label}</li>`
	}
	
	str += "</ul>";

	$(this.lhs).html(str);

	wc.wait4("wc-pager", () => {
	    this.pager = this.querySelector("wc-pager");
	    $(`#${this.id} [tab-num=${this.properties.show}]`).addClass("active");

	    let as = this.querySelectorAll("ul li");

	    $(as).on("click", function() {
		$(as).removeClass("active");
		$(this).addClass("active");

		let tn = $(this).attr("tab-num");
		let pg = $(this).attr("page");
		
		self.pager.show(pg);
	    });
	});
	
	wc.groupEnd();
    };

    /**
     * @private
     * @_rhs
     */
    _rhs(data) {
	wc.group("Tabs._rhs");

	let self = this;

	$(this.rhs).show();

	// ADD PAGER
	if (this.properties.cfg) {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev" cfg="${this.properties.cfg}"></wc-pager>`);
	} else {
	    $(this.mid).html(`<wc-pager id="${this.id}-pager" class="wc-maximize" env="dev"></wc-pager>`);

	    wc.wait4(`wc-pager`, function() {
		let tmp = self.querySelector(`wc-pager`);
		tmp.configure(data);
	    });
	}

	$(this.rhs).addClass("col-sm-" + this.cols[0]);
	$(this.mid).addClass("col-sm-" + this.cols[1]);

	let str = `<ul class="list-group list-group-flush">`;

	let n = 0;
	for (var key in data) {
	    str += `<li tab-num="${n++}" page="${data[key].page}" id="wc-tabs-${data[key].id}" class="list-group-item list-group-item-action" url="${data[key].url}">${data[key].label}</li>`
	}

	str += "</ul>";

	$(this.rhs).html(str);

	wc.wait4("wc-pager", () => {
	    this.pager = this.querySelector("wc-pager");
	    $(`#${this.id} [tab-num=${this.properties.show}]`).addClass("active");

	    let as = this.querySelectorAll("ul li");
	    $(as).on("click", function() {
		$(as).removeClass("active");
		$(this).addClass("active");

		let tn = $(this).attr("tab-num");
		let pg = $(this).attr("page");
		
		self.pager.show(pg);
	    });
	});
	
	wc.groupEnd();
    };

    /**
     * Initialize component
     * @private
     * @_initialize
     */
    _initialize() {
	wc.group("Tabs._initialize:", this.id);

	// FETCH ALL INTERESTING ELEMENTS
	this._fetchElements();

	// FETCH ALL ATTRIBUTES
	this._fetchAttributes();
	
	wc.groupEnd();
    };

    /**
     * Save data for analytics and final wrap up
     * @private
     * @_finalize
     */
    _finalize() {
	wc.group("Tabs._finalize:", this.id);

	this.classList.add("wc");

	// ADD ANALYTICS HERE
	wc.setStats(this, this.properties.cname, this.properties.version);
	
	// SHOW IT NOW (NO FLICKERS) 
	this.style.visibility = "visible";

	wc.groupEnd();
    };

    /**
     * Invoked When component is removed. Usually with a .remove() function call
     * @disconnectedCallback
     */
    disconnectedCallback() {
        wc.group("Tabs.disconnectedCallback")

	ga('send', {'hitType': 'event','eventCategory': 'wc-disconnected','eventAction': 'disconnected','eventLabel': this.properties.cname, 'eventValue':JSON.stringify({'env':wcENV,'app':wcAPP,'url':wcURL})});

        wc.groupEnd();
    };

    /**
     * Destroy the instance object and artifacts
     * @destroy
     */
    destroy() {
	wc.group("Tabs.destroy");

	// FREE ALL MEMORY
	// you should delete all created objects here
	
	// FREE POINTER
	delete this;
	
	// REMOVE ITEM FROM DOM
	this.parentNode.removeChild(this);

	ga('send', {'hitType': 'event','eventCategory': 'wc-destroyed','eventAction': 'distroy','eventLabel': this.properties.cname, 'eventValue':JSON.stringify({'env':wcENV,'app':wcAPP,'url':wcURL})});

	wc.groupEnd();
    };

    /**
     * @_publish
     */
    _publish(type) {
	wc.group("Tabs._publish:", type);

	wc.publish("wc-tabs", {
	    time: new Date().getTime(),
	    action: type,
	    id: this.id
	});

	wc.groupEnd();
	return true;
    };

    /**
     * @_open
     */
    _open(tabid) {
	wc.group("Tabs._open:", tabid);

	let tab = this.querySelector(`[tab-num="${tabid}"]`);

	// CLICK TO OPEN THE PAGE
	$(tab).click();

	wc.publish("wc-tabs", {
	    time: new Date().getTime(),
	    action: "open",
	    tab: tabid,
	    id: this.id
	});

	wc.groupEnd();
	return true;
    };

    /**
     * @_load
     */
    _load(tabid, type, content) {
	wc.group("Tabs._load:", tabid);

	let tab = this.querySelector(`[tab-num="${tabid}"]`);
	let page = $(tab).attr("page");
	let pager = this.querySelector(`.wc-pager__page.${page}`);

	// OPEN THE TAB
	this._open(tabid);

	// LOAD CONTENT FROM CONTENT
	if (type == "url") {
	    $(pager).load(content);
	}

	if (type == "html") {
	    pager.innerHTML = content;
	}

	wc.publish("wc-tabs", {
	    time: new Date().getTime(),
	    action: "load",
	    url: content,
	    id: this.id
	});

	wc.groupEnd();
	return true;
    };

    /**
     * @_request
     */
    _request(e) {
	wc.group("Tabs._request:", this.id, JSON.stringify(e.detail));
	
	switch(e.detail.request) 
	{
	    case "open":
	    this._open(e.detail.tab);
	    break;

	    case "load":
	    // LOAD FROM URL
	    if (typeof e.detail.url != "undefined") {
		this._load(e.detail.tab, "url", e.detail.url);
	    }

	    // ADD CONTENT AS HTML
	    if (typeof e.detail.html != "undefined") {
		this._load(e.detail.tab, "html", e.detail.html);
	    }

	    break;

	    default:
	    alert("DO NOT HAVE SUCH REQUEST: " + e.detail.request);
	    break;
	}

	wc.groupEnd();
	return true;
    };

    /**
     * @test
     */
    static test(what) {
	wc.group("Tabs.test:", what);

	switch(what) 
	{
	    case "open":
	    wc.publish("my-tabs-top", {time:new Date().getTime(), requestor:"my-tabs-top", request:"open", tab:2})
	    break;

	    case "load":
	    wc.publish("my-tabs-top", {time:new Date().getTime(), requestor:"my-tabs-top", request:"load", tab:1, url:"/mtk/render?ajax=1&callback=tk::dummy::3"})
	    break;

	    case "html":
	    wc.publish("my-tabs-top", {time:new Date().getTime(), requestor:"my-tabs-top", request:"load", tab:1, html:"<h1>Mel was here</h1>"})
	    break;
	}
	
	wc.groupEnd();
	return true;
    }
}

window.customElements.define('wc-tabs', Tabs);

// SO I CAN CALL THE STATIC METHOD GLOBALLY
window.Tabs = Tabs;