Source: components.js

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

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

	this.observables = [];

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

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

	this.env = wc.getSearchParam("env") || "dev"

	// 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 = "<wc-include href='/tk/lib/components/misc/webpack/src/w/html/parts/components/main.html'></wc-include>"

	this.configure();
	
	wc.wait4(".btn-group-horizontal .btn", function() {
	    $(".btn-group-horizontal .btn").on("click", function() {
		self.env = $(this).attr("env")

		self._env();
	    });
	});

	wc.wait4(".wc-components-search", function() {
	    $(".wc-components-search").focus();

	    $(".wc-components-search").on('input', function() {
		self._search();
	    });

	    if (self.env == "prod") {
		$(".btn-group-horizontal .btn").hide();
	    }
	});

	// 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();
    };

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

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

	let obs = Components.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("Components._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("Components._fetchAttributes");
	
	this.properties = {
	    uparam	: "",
	    cname	: "Components",
	    author	: "Mel M. Heravi, Ph.D.",
	    version	: "1.0"
	};
	
	// 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("Components.configure:", data);

	let self = this;
	
	// GET HTML FILES
	$.getJSON("/mtk/rest/os/dir?path=/Melify/mtk/dev/tk/lib/components/w/html&files=*", function(hfiles) {
	    self.hfiles = hfiles;

	    // GET IMG FILES
	    $.getJSON("/mtk/rest/os/dir?path=/Melify/mtk/dev/tk/lib/components/w/img&files=*.png", function(ifiles) {
		self.ifiles = ifiles;

		// GET PROD FILES
		$.getJSON("/mtk/rest/os/dir?path=/Melify/mtk/dev/tk/lib/components/misc/webpack/prod&files=*", function(pfiles) {
		    self.pfiles = pfiles;

		    self._process();
		});
	    });
	});

	wc.groupEnd();
    };

    /**
     * _process the instance object and artifacts
     * @private
     * @_process
     */
    _process() {
	wc.group("Components._process");
	
	if (0) {
	    console.log("HFILES", this.hfiles)
	    console.log("IFILES", this.ifiles)
	    console.log("PFILES", this.pfiles)
	}

	for (var i = 0; i < this.ifiles.length; i++) {
	    let name = this.ifiles[i].replace(".png","");

	    this._tile(name);
	}

	this._env();

	wc.groupEnd();
    };

    /**
     * Initialize component
     * @private
     * @_initialize
     */
    _initialize() {
	wc.group("Components._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("Components._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("Components.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("Components.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();
    };

    /**
     * @_tile
     */
    _tile(name) {
	wc.group("Components._tile:", name);

	$(".wc-components-main").append(`
		<a href="/tk/lib/components/misc/webpack/src/w/html/${name}.html" target="_blank" id="${name}">
		    <div class="wc-components-tile float-left col-lg-2">
			<div class="shadow border">
			    <span class="wc-components-name">${name}</span>
			    <img src="/tk/lib/components/misc/webpack/src/w/img/${name}.png">
			</div>
		    </div>
		</a>`);

	wc.groupEnd();
    };

    /**
     * @_env
     */
    _env() {
	wc.group("Components._env");

	let self = this;

	switch(this.env) 
	{
	    case "prod":
	    $(".wc-components-tile").parent().each(function() {
		let id = $(this).attr("id");
		$(this).attr("href","/tk/lib/components/misc/webpack/prod/" + id);
		
		if (!self.pfiles.includes(id)) {
		    $("#" + id).css({"opacity":"0.2", "cursor":"not-allowed"}).attr("onclick","return false");
		}
	    });
	    break;

	    case "dev":
	    $(".wc-components-tile").parent().each(function() {
		let id = $(this).attr("id");
		$(this).attr("href",`/tk/lib/components/misc/webpack/src/w/html/${id}.html`);
		
		if (self.hfiles.includes(id + ".html")) {
		    $("#" + id).css({"opacity":"1.0", "cursor":"hand"}).removeAttr("onclick")
		}
	    });
	    break;
	}
	
	// CLIP BUTTONS
	$(".btn-group-horizontal .btn").removeClass("active");
	$(`[env=${this.env}]`).addClass("active");
	
	// SET IT IN ADDRESSBAR
	wc.setSearchParam(`?env=${this.env}`);

	wc.groupEnd();
    };

    /**
     * @_search
     */
    _search() {
	wc.group("Components._search");

	let self = this;

	let val = $(".wc-components-search").val()

	$(".wc-components-main a").each(function() {
	    let id = $(this).attr("id");

	    if (!id.includes(val)) {
		$(this).hide();
	    } else {
		$(this).show();
	    }
	});

	wc.groupEnd();
    };
}

window.customElements.define('wc-components', Components);