Folks, can you please help me with this questions.
var Module = function ( options ) {
var settings = {
selector: 'body',
declaration: function () {
return{
init: function () {
console.log( 'nodule initialize' );
},
destroy: function () {
console.log( ' module destroyed' );
}
}
}
};
this.declaration = options.declaration || settings.declaration;
this.selector = options.selector || settings.selector;
};
var Registration = function ( options ) {
this.selector = options.selector || **strong text**;
this.declaration = options.declaration
}
app.utils.extend( Module, Registration );
var m_registration = new Registration( {
declaration: function ( f ) {
return {
init: function () {
},
destroy: function () {
}
}
}
} );
My main questions, how i can inherit Module.selector properties in m_registration, if we haven't need quantity arguments passed when we are creating instance of Registration
My realisation of function app.utils.extend():
var app.utils.extend = function ( from, to ) {
var F = function () {
};
F.prototype = from.prototype;
to.prototype = new F();
to.prototype.constructor = to;
to.superclass = from.prototype;
}
Update:
If we are using these method:
var Registration = function ( options ) {
Module.call(this, { selector : options.selector });
this.declaration = options.declaration
}
How we can use inheritance if we really dont know from what instance this class extended or inheritance.
var Registration = function ( options ) {
Module.call(this, { selector : options.selector || **strong text**});
this.declaration = options.declaration
}
I don't know what **strong text** means in your case. But if you call it like this
var Registration = function ( options ) {
Module.call(this, { selector : options.selector });
this.declaration = options.declaration
}
Or
var Registration = function ( options ) {
Module.call(this, options );
this.declaration = options.declaration
}
In your case m_registration.selector will be 'body'
var Module = function ( options ) {
this.declaration = options.declaration;
this.selector = options.selector;
}
Module.prototype = {
selector: 'body',
declaration: function () {
return{
init: function () {
console.log( 'nodule initialize' );
},
destroy: function () {
console.log( ' module destroyed' );
}
}
}
};
Another approach is to put all the properties you want inherited to the prototype property. This is how javascript engine deals with inheritance
Related
I found this code, to add before and after the ability to run a function, searched and don't know, what is new(self) mean there?
Function.prototype.before = function(fn) {
const self = this
return function() {
fn.apply(new(self), arguments)
return self.apply(new(self), arguments)
}
}
Function.prototype.after = function(fn) {
const self = this
return function() {
self.apply(new(self), arguments)
return fn.apply(new(self), arguments)
}
}
...
const validate = function(){
// ...
}
const formSubmit = function() {
// ...
ajax( 'http:// xxx.com/login', param )
}
submitBtn.onclick = function() {
formSubmit.before( validate )
}
I'm trying to implement widgits the way DevExtreme does it.
When they create a textbox widgit, this is the code:
$("#someContainer").dxTextBox({ options... });
When they get an instance of the widgit, they do this...
$("#someContainer").dxTextBox("instance");
This is my widget code so far ...
(function ($) {
'use strict';
$.myWidget = function (element, options) {
var plugin = this;
var $base = $(element);
var defaultOptions = {
id: null,
};
var opts = $.extend({}, defaultOptions, options);
var me = new function () {
var self = this;
var init = {
widgets: function () {
// Do some stuff
},
};
return {
init: init,
};
};
me.init.widgets();
};
$.fn.myWidget = function (options) {
return this.each(function () {
if (undefined === $(this).data('myWidget')) {
var plugin = new $.myWidget(this, options);
$(this).data('myWidget', plugin);
}
});
};
})(jQuery)
With this I can create a widget like this...
$("#someContainer").myWidget({ id: 1 });
But I would like to be able to get an instance of the widget, so I could do something like this:
$("#someContainer").myWidget("instance").showPopup();
And also:
var w = $("#someContainer").myWidget({ options... }).myWidget("instance");
w.showPopup();
How can I get an instance?
You have to detect the "special call" for when the instance is requested. Here a small example:
(function ($) {
'use strict';
$.myWidget = function (element, options) {
var plugin = this;
var $base = $(element);
var defaultOptions = {
id: null,
};
var opts = $.extend({}, defaultOptions, options);
var me = new function () {
var self = this;
var init = {
widgets: function () {
return {
hello: function(){
alert("it's me!");
}
}
},
};
return {
init: init,
};
};
return me.init.widgets();
};
$.fn.myWidget = function (options) {
if(options === "instance"){
return $(this).data('myWidget');
}
return this.each(function () {
if (undefined === $(this).data('myWidget')) {
var plugin = new $.myWidget(this, options);
$(this).data('myWidget', plugin);
}
});
};
})(jQuery)
$("#someContainer").myWidget({ id: 1 });
$("#someContainer").myWidget("instance").hello()
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="someContainer"></div>
Hey all I am using flexslider in my website for slider the slider is running fine on my server at http://www.reurl.in/31830875a but when checked on local server or made life somewhere else I am getting this error in console "Cannot read property 'wrapup' of undefined" and slider is not working
Here is the function
function FlexsliderManualDirectionControls( element, options ) {
this.element = element;
this.options = $.extend( {}, defaults, options) ;
this._flexslider = $(element).data('flexslider');
this._originalFlexsliderWrapupFunction = this._flexslider.wrapup;
this._defaults = defaults;
this._name = flexsliderManualDirectionControls;
this.init();
}
This is just a single function out of full page code.
the console says error at this._originalFlexsliderWrapupFunction = this._flexslider.wrapup;
If you find something helpful please do reply back.
Incase you need full code
/*jshint bitwise:true, curly:true, eqeqeq:true, forin:true, immed:false, latedef:true, newcap:true, noarg:true, noempty:true, nonew:true, undef:true, strict:false, trailing:true, browser:true, jquery:true */
/*!
* jQuery flexslider extension
* Original author: #markirby
* Licensed under the MIT license
*/
(function ( $, window, document, undefined ) {
var flexsliderManualDirectionControls = 'flexsliderManualDirectionControls',
defaults = {
previousElementSelector: ".previous",
nextElementSelector: ".next",
disabledStateClassName: "disable"
};
function FlexsliderManualDirectionControls( element, options ) {
this.element = element;
this.options = $.extend( {}, defaults, options);
this._flexslider = $(element).data('flexslider');
this._originalFlexsliderWrapupFunction = this._flexslider.wrapup;
this._defaults = defaults;
this._name = flexsliderManualDirectionControls;
this.init();
}
FlexsliderManualDirectionControls.prototype.init = function () {
this.addEventListeners();
var self = this;
this._flexslider.wrapup = function(direction) {
self.onAnimationEnd.call(self, direction);
};
};
FlexsliderManualDirectionControls.prototype.addEventListeners = function() {
$(this.element).find(this.options.previousElementSelector).bind('touchstart.flexsliderPromo click.flexsliderPromo', {self:this}, function(event) {
event.stopPropagation();
event.preventDefault();
if (!event.handled) {
event.data.self.goToTargetInDirection('prev');
event.handled = true;
}
});
$(this.element).find(this.options.nextElementSelector).bind('click.flexsliderPromo', {self:this}, function(event) {
event.stopPropagation();
event.preventDefault();
if (!event.handled) {
event.data.self.goToTargetInDirection('next');
event.handled = true;
}
});
};
FlexsliderManualDirectionControls.prototype.goToTargetInDirection = function(direction) {
var target = this._flexslider.getTarget(direction);
if (this._flexslider.canAdvance(target)) {
this._flexslider.flexAnimate(target);
}
return false;
};
FlexsliderManualDirectionControls.prototype.addOrRemoveDisabledStateForDirection = function(direction, $navElement) {
var target = this._flexslider.getTarget(direction);
if (!this._flexslider.canAdvance(target)) {
$navElement.addClass(this.options.disabledStateClassName);
} else {
$navElement.removeClass(this.options.disabledStateClassName);
}
};
FlexsliderManualDirectionControls.prototype.onAnimationEnd = function(direction) {
var $nextElement = $(this.element).find(this.options.nextElementSelector),
$previousElement = $(this.element).find(this.options.previousElementSelector);
this.addOrRemoveDisabledStateForDirection('next', $nextElement);
this.addOrRemoveDisabledStateForDirection('prev', $previousElement);
this._originalFlexsliderWrapupFunction(direction);
};
$.fn[flexsliderManualDirectionControls] = function ( options ) {
return this.each(function () {
if (!$.data(this, 'plugin_' + flexsliderManualDirectionControls)) {
$.data(this, 'plugin_' + flexsliderManualDirectionControls,
new FlexsliderManualDirectionControls( this, options ));
}
});
};
})( jQuery, window, document );
I have a plugin with the following structure:
(function($){
function pluginName(el, options) {
var _this = this;
_this.defaults = {
someOptions: '',
onSlideStart: function() {},
onSlideEnd: function() {},
};
_this.opts = $.extend({}, _this.defaults, options);
$(el).on("slideStart", function() {
_this.opts.onSlideStart.call();
});
$(el).on("slideEnd", function() {
_this.opts.onSlideEnd.call();
});
}
pluginName.prototype = {
someFunctions: function() {
}
};
$.fn.pluginName = function(options) {
if(this.length) {
this.each(function() {
var rev = new pluginName(this, options);
rev.init();
$(this).data('pluginName', rev);
});
}
};
})(jQuery);
If I call it the following way, everything is okay:
$('.element').pluginName({
someOptions: 'full',
onSlideStart: function() {
console.log('slideStart!');
},
onSlideEnd: function() {
console.log('slideEnd!');
},
});
But I want to dynamic load the custom event handler like this:
(function($){
function pluginName(el, options) {
var _this = this;
_this.defaults = {
someOptions: '',
onSlideStart: function() {},
onSlideEnd: function() {},
};
_this.opts = $.extend({}, _this.defaults, options);
for (var optionName in _this.opts) {
var
optionValue = _this.opts[optionName],
optionType = typeof(optionValue)
;
if(optionType == 'function') {
optionNames = optionName.split('on');
eventName = global.lowerFirstLetter(optionNames[1]);
$(el).on(eventName, function() {
eval('_this.opts.' + optionName + '.call();');
});
}
}
}
...
})(jQuery);
But this does not work. When I call the plugin with the "dynamic" part, it always call the slideEnd-function. So am I doing it wrong or is it just impossible with my plugin-pattern to call the custom event-handler dynamically?
Why use eval ? It's usually bad to use eval.
if(optionType == 'function') {
optionNames = optionName.split('on');
eventName = global.lowerFirstLetter(optionNames[1]);
$(el).on(eventName, _this.opts[optionName]);
}
Try it and let me know.
Hi I was wondering if anyone knows if it's possible to define a column in slickgrid as being a drop down select list. If not does anyone with some experience with slickgrid know how I should go about adding this option?
Thanks
You probably dont want to make a new select editor for each range of options. Also you may not know that range of all option value beforehand.
In that case you want a flexible range of options in a select type editor. In order to do this you can add an extra option to your column definitions (e.g. called options) like this:
var columns = [
{id:"color", name:"Color", field:"color", options: "Red,Green,Blue,Black,White", editor: SelectCellEditor},
{id:"lock", name:"Lock", field:"lock", options: "Locked,Unlocked", editor: SelectCellEditor}
]
and access that using args.column.options in the init method of your own SelectEditor object like this:
SelectCellEditor : function(args) {
var $select;
var defaultValue;
var scope = this;
this.init = function() {
if(args.column.options){
opt_values = args.column.options.split(',');
}else{
opt_values ="yes,no".split(',');
}
option_str = ""
for( i in opt_values ){
v = opt_values[i];
option_str += "<OPTION value='"+v+"'>"+v+"</OPTION>";
}
$select = $("<SELECT tabIndex='0' class='editor-select'>"+ option_str +"</SELECT>");
$select.appendTo(args.container);
$select.focus();
};
this.destroy = function() {
$select.remove();
};
this.focus = function() {
$select.focus();
};
this.loadValue = function(item) {
defaultValue = item[args.column.field];
$select.val(defaultValue);
};
this.serializeValue = function() {
if(args.column.options){
return $select.val();
}else{
return ($select.val() == "yes");
}
};
this.applyValue = function(item,state) {
item[args.column.field] = state;
};
this.isValueChanged = function() {
return ($select.val() != defaultValue);
};
this.validate = function() {
return {
valid: true,
msg: null
};
};
this.init();
}
I assume you mean a custom cell editor.
Here's a sample select-based boolean cell editor from slick.editors.js. You could easily modify it to work with an arbitrary set of possible values.
function YesNoSelectCellEditor($container, columnDef, value, dataContext) {
var $select;
var defaultValue = value;
var scope = this;
this.init = function() {
$select = $("<SELECT tabIndex='0' class='editor-yesno'><OPTION value='yes'>Yes</OPTION><OPTION value='no'>No</OPTION></SELECT>");
if (defaultValue)
$select.val('yes');
else
$select.val('no');
$select.appendTo($container);
$select.focus();
};
this.destroy = function() {
$select.remove();
};
this.focus = function() {
$select.focus();
};
this.setValue = function(value) {
$select.val(value);
defaultValue = value;
};
this.getValue = function() {
return ($select.val() == 'yes');
};
this.isValueChanged = function() {
return ($select.val() != defaultValue);
};
this.validate = function() {
return {
valid: true,
msg: null
};
};
this.init();
};
If your cell already contains a "select"-tag with multiple options, you can extract this html from the args. The approach differs from the previous answers, but I was personally troubled with these solutions, course my cell already contained a select-tag. I'd like to reuse this cell instead of reconstructing it completely in the this.init. Likewise, I'd like to keep using the same options, as my existing select already have, instead of parsing them to the var column = { ...
The $( args.item[ args.column.field ] ) return the active cells content, which basically just get re-appended to the the container (the cell-object). From if ( document.createEvent ) and down, is just a functionality which automatically opens the dropdown on activation; etc. when you use tabulator to navigate to the cell.
function SelectCellEditor( args ) {
var $select;
var defaultValue;
var scope = this;
this.init = function () {
$select = $( args.item[ args.column.field ] );
$select.appendTo( args.container );
$select.focus();
// Force the select to open upon user-activation
var element = $select[ 0 ];
if ( document.createEvent ) { // all browsers
var e = new MouseEvent( "mousedown", {
bubbles: true,
cancelable: true,
view: window
});
element.dispatchEvent( e );
} else if ( element.fireEvent ) { // ie
element.fireEvent( "onmousedown" );
}
};
}
Complet editor for Dropdown html-input -> Dropdown html-output
function SelectCellEditor( args ) {
var $select = $( args.item[ args.column.field ] );
var defaultValue;
var scope = this;
this.init = function () {
//$select
$select.appendTo( args.container );
// Force the select to open upon user-activation
var element = $select[ 0 ];
if ( document.createEvent ) { // all browsers
var e = new MouseEvent( "mousedown", {
bubbles: true,
cancelable: true,
view: window
});
element.dispatchEvent( e );
} else if ( element.fireEvent ) { // ie
element.fireEvent( "onmousedown" );
}
$select.on("click", function( e ) {
var selected = $( e.target ).val();
$select.find( "option" ).removeAttr( "selected" );
$select.find( "option[value='" + selected + "']" ).attr( "selected", "selected" );
});
};
this.destroy = function () {
$select.remove();
};
this.focus = function () { };
this.loadValue = function ( item ) { };
this.serializeValue = function () { };
// Only runs if isValueChanged returns true
this.applyValue = function ( item, state ) {
item[ args.column.field ] = $select[ 0 ].outerHTML;
};
this.isValueChanged = function () {
return true;
};
this.validate = function () {
return {
valid: true,
msg: null
};
};
this.init();
}
Without jq, and inline injected elements, packed in module:
'use strict';
class SelectCellWidget {
constructor(args) {
this._args = args;
this._$select = undefined;
this._defaultValue = undefined;
this._init();
}
_init () {
let selects, container, divend, opt_values;
const args = this._args;
if(args.column.options){
opt_values = args.column.options.split(',');
}else{
opt_values = ["yes","no"];
}
container = document.createElement("div");
container.classList.add('select-editable');
divend = document.createElement('input');
divend.setAttribute("type", "text");
divend.setAttribute("name", "format");
divend.setAttribute("value", "");
selects = document.createElement("select");//"<select id='Mobility' tabIndex='0' class='editor-select'>"+ option_str +"</select>";
selects.setAttribute("id", "Mobility");
selects.setAttribute("tabIndex", 0);
selects.setAttribute("class", "editor-select");
for(let i = 0; i < opt_values.length; i++) {
let v = opt_values[i];
let option = document.createElement("option");
option.setAttribute("value", v);
option.innerText = v;
selects.appendChild(option);
}
container.appendChild(divend);
container.appendChild(selects);
this._$select = container;
args.container[0].appendChild(this._$select);
this._$select.focus();
document.getElementById("Mobility").selectedIndex = args.item[args.column.field] ? opt_values.indexOf(args.item[args.column.field]) : 0;
}
destroy () {
this._$select.remove();
}
focus () {
this._$select.focus();
}
loadValue (item) {
this._defaultValue = item[this._args.column.field];
this._$select.value = this._defaultValue;
}
serializeValue () {
if(this._args.column.options){
return this._$select.lastElementChild.value;
}else{
return (this._$select.lastElementChild.value === "yes");
}
}
applyValue (item,state) {
item[this._args.column.field] = state;
}
isValueChanged () {
return (this._$select.lastElementChild.value !== this._defaultValue);
}
validate () {
return {
valid: true,
msg: null
};
}
}
module.exports=SelectCellWidget;
https://github.com/YaAlfred/SlickgridSelectDropdownWidget