/**
* band Component<BR>
* <BR><BR><img src=/tk/lib/components/w/img/band.png width=60% style="border:1px lime dashed;padding:20px">
* <BR><BR><a href="/tk/lib/components/w/html/band.html">DEMO</a>
*/
class Band extends HTMLElement {
constructor() {
wc.group("Band.constructor")
super();
wc.groupEnd();
};
/**
* Set observable values here. When Changed, attributeChangedCallback is invoked
* @observedAttributes
*/
static get observedAttributes() {
wc.group("Band.observedAttributes");
this.observables = ["header"];
wc.groupEnd();
return this.observables;
};
/**
* This function is called when this is attached to DOM
* @connectedCallback.
*/
connectedCallback() {
wc.group("Band.connectedCallback")
let self = this;
// GET PROPERTIES AND INTERESTING ELEMENTS
this._initialize();
// REPLACE CONTENT IF NECESSARY WITH NEW STUFF
this.innerHTML = `
<div class="row">
<div class="wc-band-lhs">
</div>
<div class="wc-band-rhs">
</div>
</div>
`;
// ADD STATS AND OTHER FINAL STUFF
this._finalize();
// PUBLISH INTERESTING EVENTS
//this._publish();
wc.groupEnd();
};
/**
* Publish all events
* @private
* @_publish
*/
_publish() {
wc.group("Band.publish");
this.addEventListener("click", e => {
this._click();
});
wc.groupEnd();
}
/**
* A sample callback usage function - see connectedCallback()
* @private
* @_click
*/
_click() {
wc.group("Band._click:", this.id);
wc.publish("wc-band", {
time: new Date().getTime(),
action: "click",
id: this.id,
uparam: this.properties.uparam
});
wc.groupEnd();
};
/**
* Invoked When component is removed. Usually with a .remove() function call
* @disconnectedCallback
*/
disconnectedCallback() {
wc.group("Band.disconnectedCallback")
/* CLEAN UP NOW */
wc.groupEnd();
};
/**
* Called with .setAttribute(...) function call
* @attributeChangedCallback
*/
attributeChangedCallback(attr, oldval, newval) {
wc.group("Band.attributeChangedCallback:", attr, oldval, newval);
this.properties = this.properties || [];
let obs = Band.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 "background":
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("Band._fetchElements");
this.dom = this.dom || [];
this.dom.content = this.innerHTML;
wc.groupEnd();
};
/**
* Component attributes are _fetched and defaults are set if undefined
* @private
* @_fetchAttributes
* @param {string} [modal=true] mode for our band
*/
_fetchAttributes() {
wc.group("Band._fetchAttributes");
this.properties = {
cname : "band",
author : "Mel Heravi",
version : "1.0",
header : "UNDEFINED HEADER"
};
// 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 "background":
break;
case "header":
let h = document.querySelector("wc-header")
break;
default:
break;
}
}
wc.log("ATTRIBUTES: ", this.properties);
wc.groupEnd();
};
/**
* A sample callback usage function - see connectedCallback()
* @private
* @_onClick
*/
_onClick() {
wc.group("Band._onClick:", this.id);
wc.publish("wc-band", {
action: "click",
id: this.id,
uparam: this.properties.uparam
});
wc.groupEnd();
};
/**
* Destroy the instance object and artifacts
* @private
* @_destroy
*/
destroy() {
wc.group("Band.destroy:", this.id);
// FREE ALL MEMORY
// you should delete all created objects here
// FREE POINTER
delete this;
// REMOVE ITEM FROM DOM
this.parentNode.removeChild(this);
wc.groupEnd();
};
/**
* configure the instance object and artifacts
* @private
* @_configure
*/
configure(band) {
wc.group("Band.configure");
this._lhs("lhs", band.lhs);
this._rhs("rhs", band.rhs);
wc.groupEnd();
};
/**
* @private
* @_lhs
*/
_lhs(side, band) {
wc.group("Band._lhs:", side, band);
// CALL FUNC BASED ON CATEGORY
eval("this._" + band.category + "(side, band)");
wc.groupEnd();
};
/**
* @private
* @_table
*/
_table(side, band) {
wc.group("Band._table:", side, band);
let con = "#" + this.id + " .wc-band-" + side;
$(con).empty();
$(con).addClass(band.width).append("<wc-table></wc-table>");
setTimeout(() => {
let tbl = this.querySelector("wc-table");
tbl.configure(band);
}, 200);
wc.groupEnd();
};
/**
*
* @private
* @_lhs
*/
_rhs(side, band) {
wc.group("Band._rhs", side, band);
// CALL FUNC BASED ON CATEGORY
eval("this._" + band.category + "(side, band)");
wc.groupEnd();
};
/**
*
* @private
* @_lhs
*/
_chart(side, band) {
wc.group("Band._chart:", side, band);
let con = "#" + this.id + " .wc-band-" + side;
$(con).empty();
$(con)
.addClass(band.width)
.append(`<wc-chart id="${this.id}-${side}"></wc-chart>`);
let chart = this.querySelector("wc-chart");
eval("chart." + band.type + "(band)");
wc.groupEnd();
};
/**
* SAVE DATA FOR ANALYTICS
* @private
* @_initialize
*/
_initialize() {
wc.group("Band._initialize:", this.id);
// FETCH ALL INTERESTING ELEMENTS
this._fetchElements();
// FETCH ALL ATTRIBUTES
this._fetchAttributes();
wc.groupEnd();
};
/**
* SAVE DATA FOR ANALYTICS
* @private
* @_finalize
*/
_finalize() {
wc.group("Band._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();
};
}
window.customElements.define('wc-band', Band);