/**
* Blockui Component<BR>
* <BR><BR><img src=/tk/lib/components/w/img/blockui.png width=30% style="border:1px lime dashed;padding:20px">
* <BR><BR><a href="/tk/lib/components/w/html/blockui.html">DEMO</a>
*/
class Blockui extends HTMLElement {
constructor() {
wc.group("Blockui.constructor")
super();
wc.groupEnd();
};
/**
* Set observable values here. When Changed, attributeChangedCallback is invoked
* @observedAttributes
*/
static get observedAttributes() {
wc.group("Blockui.observedAttributes");
this.observables = [];
wc.groupEnd();
return this.observables;
};
/**
* Called when this is attached to DOM
* @connectedCallback.
*/
connectedCallback() {
wc.group("Blockui.connectedCallback")
// 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 = "<img id='wc-img-loading' src='/tk/img/common/spinner.gif' style='display:none' width=80>";
// ADD STATS AND OTHER FINAL STUFF
this._finalize();
wc.groupEnd();
};
/**
* Called with .setAttribute(...) function call
* @attributeChangedCallback
*/
attributeChangedCallback(attr, oldval, newval) {
wc.group("Blockui.attributeChangedCallback:", attr, oldval, newval);
this.properties = this.properties || [];
let obs = Blockui.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("Blockui._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("Blockui._fetchAttributes");
this.properties = {
uparam : "",
cname : "Blockui",
author : "Mel M. Heravi",
version : "1.0",
background : "#CCC",
parent : "body"
};
// 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("Blockui.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("Blockui._process:", data);
// DO WHATEVER WITH THE DATA
wc.groupEnd();
};
/**
* Initialize component
* @private
* @_initialize
*/
_initialize() {
wc.group("Blockui._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("Blockui._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("Blockui.disconnectedCallback")
// FREE MEMORY AND CLEANUP
wc.groupEnd();
};
/**
* Destroy the instance object and artifacts
* @destroy
*/
destroy() {
wc.group("Blockui.destroy");
// FREE ALL MEMORY
// you should delete all created objects here
// FREE POINTER
delete this;
// REMOVE ITEM FROM DOM
this.parentNode.removeChild(this);
wc.groupEnd();
};
/**
* @show
*/
show() {
wc.group("Blockui.show");
if (this.properties.parent == "body") {
$.blockUI({
cursorReset: 'default',
cursor: null,
message: $("#wc-img-loading"),
overlayCSS: {
backgroundColor: this.properties.background,
cursor: "not-allowed",
},
css: {
background: "transparent",
border: 0,
top: ($(window).height() - 80) /2 + 'px',
left: ($(window).width() - 500) /2 + 'px',
width: '400px',
cursor: "not-allowed",
}
});
} else {
$(this.properties.parent).block({
message: $("#wc-img-loading"),
overlayCSS: {
backgroundColor: this.properties.background,
cursor: "not-allowed",
},
css: {
background: "transparent",
border: 0,
top: ($(this.properties.parent).height() - 80) /2 + 'px',
left: ($(this.properties.parent).width() - 500) /2 + 'px',
width: '400px',
cursor: "not-allowed",
}
});
}
wc.groupEnd();
};
/**
* @hide
*/
hide() {
wc.group("Blockui.show");
if (this.properties.parent == "body") {
$.unblockUI();
} else {
$(this.properties.parent).unblock();
}
wc.groupEnd();
};
}
window.customElements.define('wc-blockui', Blockui);