As per answer of the question Ember.js draggable and droppable jqueryUI / native Drag and drop mixin.
I have implemented JQUERY UI drag, drop, resize mixins in EmberJS. But my problem is i want the same view to do drag and resize. I tried to implement in different ways. You can check in this jsfiddle http://jsfiddle.net/codejack/TGwxf/1/ The view gets UI behaviour of last called mixin only.
Is there any way to get more than 1 behaviour in drag,drop,resize for same view?
EDIT I found out the reason is the 2nd mixin overrides the uievents,uiOptions,uiType variables. But still dont know how to avoid that... only way i can see is writing own Widgets with own events...any way to solve that?
Though the #user1128571 gave a solution which partly solves the problem, here is how i corrected the issue. I added different mixins for Interactions as that will solve the problem.
https://github.com/thecodejack/jquery-ui-ember/blob/master/js/app.js#L104
check the github pages of the module to know how exactly it works
You might want the JQ.Widget to look like this, warning it's not pretty:
Here, JQ.UiBase is the same thing as JQ.Widget
JQ.UiBase = Ember.Mixin.create({
uiWidgets: {},
uiAttributes: {},
// ----------------------------------------------------------------------------
// setup and teardown
didInsertElement: function(){
this._super();
this._createUiWidgets();
},
willDestroyElement: function(){
this._super();
// implement tear down
},
// ----------------------------------------------------------------------------
// #Private
// #Function: for each $.ui specified in the view, create a $.ui widget
// add ui widgets to uiWidgets hash, ui widget setting to uiAttributes hash
_createUiWidgets: function(){
var widgetTypes = this._gatherWidgetTypes();
uiWidgets = this.get('uiWidgets'),
uiAttributes = this.get('uiAttributes'),
thisView = this;
widgetTypes.forEach( function( widget ){
var options = thisView.get( widget + 'Options' ) || {},
handlers = thisView._registerEventHandlers( widget ),
attributes = $.extend( options, handlers ),
uiWidget = $.ui[widget]( attributes, thisView.$() );
uiWidgets[widget] = uiWidget;
uiAttributes[widget] = attributes;
});
},
// #Function: collects named $.ui events from Widget mixin
// for each event, if there is an associated callback, wrap it in a function and call the view's context
// #Return: a hash map $.ui event to callback function defined in view
_registerEventHandlers: function( widget_name ){
var widgetName = widget_name + 'Events',
events = this.get( widgetName ) || [],
thisView = this,
eventHandlers = {};
if ( events.length === 0 ) return;
// note the iterator is not scoped to the view
events.forEach( function( event ){
var callBack = thisView.get( event );
if ( callBack ){
eventHandlers[ event ] = function ( event, ui ){ callBack.call( thisView, event, ui ); };
};
});
return eventHandlers;
},
// TODO --> find alternate implementation that does not break if structure of ui mixins or namespace change
_gatherWidgetTypes: function() {
var nameSpace = 'JQ',
widgetTypes = [];
Ember.Mixin.mixins(this).forEach( function( mixin ){
// find widget with correct namespace
if ( mixin.toString().substring(0,2) === nameSpace ){
// console.log( 'gather: ', mixin, ' --> ', mixin.mixins[1] )
// access widget mixin and check widget mixin have properties
if ( mixin.mixins && mixin.mixins[1] && mixin.mixins[1].properties ){
if ( mixin.mixins[1].properties.widgetType ) widgetTypes.push( mixin.mixins[1].properties.widgetType)
}
}
});
return widgetTypes;
},
});
And then your resizable mixin would look like this:
JQ.Resizable = Ember.Mixin.create( JQ.UiBase, {
widgetType: 'resizable',
resizableOptions: { 'aspectRatio': 1/1 },
resizableEvents: [ 'resize' ],
resize: function( event, ui ){
// do stuff
},
});
The most important function here is the _gatherWidgetTypes, which gathers all JQ-namespaced mixins in the ember object. In my opinion, it's bit of a hack and I ended up not using the JQ.UiBase after making it, favoring to mix logic to create the widget and specifying the event handlers and options into one mixin, which ended up looking cleaner, but that's just me.
Related
I have a sortable list in React which is powered by jQuery UI. When I drag and drop an item in the list, I want to update the array so that the new order of the list is stored there. Then re-render the page with the updated array. i.e. this.setState({data: _todoList});
Currently, when you drag and drop an item, jQuery UI DnD works, but the position of the item in the UI does not change, even though the page re-renders with the updated array. i.e. in the UI, the item reverts to where it used to be in the list, even though the array that defines its placement has updated successfully.
If you drag and drop the item twice, then it moves to the correct position.
// Enable jQuery UI Sortable functionality
$(function() {
$('.bank-entries').sortable({
axis: "y",
containment: "parent",
tolerance: "pointer",
revert: 150,
start: function (event, ui) {
ui.item.indexAtStart = ui.item.index();
},
stop: function (event, ui) {
var data = {
indexStart: ui.item.indexAtStart,
indexStop: ui.item.index(),
accountType: "bank"
};
AppActions.sortIndexes(data);
},
});
});
// This is the array that holds the positions of the list items
var _todoItems = {bank: []};
var AppStore = assign({}, EventEmitter.prototype, {
getTodoItems: function() {
return _todoItems;
},
emitChange: function(change) {
this.emit(change);
},
addChangeListener: function(callback) {
this.on(AppConstants.CHANGE_EVENT, callback);
},
sortTodo: function(todo) {
// Dynamically choose which Account to target
targetClass = '.' + todo.accountType + '-entries';
// Define the account type
var accountType = todo.accountType;
// Loop through the list in the UI and update the arrayIndexes
// of items that have been dragged and dropped to a new location
// newIndex is 0-based, but arrayIndex isn't, hence the crazy math
$(targetClass).children('form').each(function(newIndex) {
var arrayIndex = Number($(this).attr('data-array-index'));
if (newIndex + 1 !== arrayIndex) {
// Update the arrayIndex of the element
_todoItems[accountType][arrayIndex-1].accountData.arrayIndex = newIndex + 1;
}
});
// Sort the array so that updated array items move to their correct positions
_todoItems[accountType].sort(function(a, b){
if (a.accountData.arrayIndex > b.accountData.arrayIndex) {
return 1;
}
if (a.accountData.arrayIndex < b.accountData.arrayIndex) {
return -1;
}
// a must be equal to b
return 0;
});
// Fire an event that re-renders the UI with the new array
AppStore.emitChange(AppConstants.CHANGE_EVENT);
},
}
function getAccounts() {
return { data: AppStore.getTodoItems() }
}
var Account = React.createClass({
getInitialState: function(){
return getAccounts();
},
componentWillMount: function(){
AppStore.addChangeListener(this._onChange);
// Fires action that triggers the initial load
AppActions.loadComponentData();
},
_onChange: function() {
console.log('change event fired');
this.setState(getAccounts());
},
render: function(){
return (
<div className="component-wrapper">
<Bank data={this.state.data} />
</div>
)
}
});
The trick is to call sortable('cancel') in the stop event of the Sortable, then let React update the DOM.
componentDidMount() {
this.domItems = jQuery(React.findDOMNode(this.refs["items"]))
this.domItems.sortable({
stop: (event, ui) => {
// get the array of new index (http://api.jqueryui.com/sortable/#method-toArray)
const reorderedIndexes = this.domItems.sortable('toArray', {attribute: 'data-sortable'})
// cancel the sort so the DOM is untouched
this.domItems.sortable('cancel')
// Update the store and let React update (here, using Flux)
Actions.updateItems(Immutable.List(reorderedIndexes.map( idx => this.state.items.get(Number(idx)))))
}
})
}
The reason jQuery UI Sortable doesn't work with React is because it directly mutates the DOM, which is a big no no in React.
To make it work, you would have to modify jQuery UI Sortable so that you keep the DnD functionality, but when you drop the element, it does not modify the DOM. Instead, it could fire an event which triggers a React render with the new position of the elements.
Since React uses a Virtual DOM, you have to use the function React.findDOMNode() to access an actual DOM element.
I would call the jQuery UI function inside the componentDidMount method of your component because your element has to be already rendered to be accessible.
// You have to add a ref attribute to the element with the '.bank-entries' class
$( React.findDOMNode( this.refs.bank_entries_ref ) ).sortable( /.../ );
Documentation - Working with the browser (everything you need to know is here)
Hope that makes sense and resolves your issue
Are there any events fired by an element to check whether a css3 transition has started or end?
W3C CSS Transitions Draft
The completion of a CSS Transition generates a corresponding DOM Event. An event is fired for each property that undergoes a transition. This allows a content developer to perform actions that synchronize with the completion of a transition.
Webkit
To determine when a transition completes, set a JavaScript event listener function for the DOM event that is sent at the end of a transition. The event is an instance of WebKitTransitionEvent, and its type is webkitTransitionEnd.
box.addEventListener( 'webkitTransitionEnd',
function( event ) { alert( "Finished transition!" ); }, false );
Mozilla
There is a single event that is fired when transitions complete. In Firefox, the event is transitionend, in Opera, oTransitionEnd, and in WebKit it is webkitTransitionEnd.
Opera
There is one type of transition event
available. The oTransitionEnd event
occurs at the completion of the
transition.
Internet Explorer
The transitionend event occurs at the completion of the transition. If the transition is removed before completion, the event will not fire.
Stack Overflow: How do I normalize CSS3 Transition functions across browsers?
Update
All modern browsers now support the unprefixed event:
element.addEventListener('transitionend', callback, false);
https://caniuse.com/#feat=css-transitions
I was using the approach given by Pete, however I have now started using the following
$(".myClass").one('transitionend webkitTransitionEnd oTransitionEnd otransitionend MSTransitionEnd',
function() {
//do something
});
Alternatively if you use bootstrap then you can simply do
$(".myClass").one($.support.transition.end,
function() {
//do something
});
This is becuase they include the following in bootstrap.js
+function ($) {
'use strict';
// CSS TRANSITION SUPPORT (Shoutout: http://www.modernizr.com/)
// ============================================================
function transitionEnd() {
var el = document.createElement('bootstrap')
var transEndEventNames = {
'WebkitTransition' : 'webkitTransitionEnd',
'MozTransition' : 'transitionend',
'OTransition' : 'oTransitionEnd otransitionend',
'transition' : 'transitionend'
}
for (var name in transEndEventNames) {
if (el.style[name] !== undefined) {
return { end: transEndEventNames[name] }
}
}
return false // explicit for ie8 ( ._.)
}
$(function () {
$.support.transition = transitionEnd()
})
}(jQuery);
Note they also include an emulateTransitionEnd function which may be needed to ensure a callback always occurs.
// http://blog.alexmaccaw.com/css-transitions
$.fn.emulateTransitionEnd = function (duration) {
var called = false, $el = this
$(this).one($.support.transition.end, function () { called = true })
var callback = function () { if (!called) $($el).trigger($.support.transition.end) }
setTimeout(callback, duration)
return this
}
Be aware that sometimes this event doesn’t fire, usually in the case
when properties don’t change or a paint isn’t triggered. To ensure we
always get a callback, let’s set a timeout that’ll trigger the event
manually.
http://blog.alexmaccaw.com/css-transitions
All modern browsers now support the unprefixed event:
element.addEventListener('transitionend', callback, false);
Works in the latest versions of Chrome, Firefox and Safari. Even IE10+.
In Opera 12 when you bind using the plain JavaScript, 'oTransitionEnd' will work:
document.addEventListener("oTransitionEnd", function(){
alert("Transition Ended");
});
however if you bind through jQuery, you need to use 'otransitionend'
$(document).bind("otransitionend", function(){
alert("Transition Ended");
});
In case you are using Modernizr or bootstrap-transition.js you can simply do a change:
var transEndEventNames = {
'WebkitTransition' : 'webkitTransitionEnd',
'MozTransition' : 'transitionend',
'OTransition' : 'oTransitionEnd otransitionend',
'msTransition' : 'MSTransitionEnd',
'transition' : 'transitionend'
},
transEndEventName = transEndEventNames[ Modernizr.prefixed('transition') ];
You can find some info here as well http://www.ianlunn.co.uk/blog/articles/opera-12-otransitionend-bugs-and-workarounds/
Just for fun, don't do this!
$.fn.transitiondone = function () {
return this.each(function () {
var $this = $(this);
setTimeout(function () {
$this.trigger('transitiondone');
}, (parseFloat($this.css('transitionDelay')) + parseFloat($this.css('transitionDuration'))) * 1000);
});
};
$('div').on('mousedown', function (e) {
$(this).addClass('bounce').transitiondone();
});
$('div').on('transitiondone', function () {
$(this).removeClass('bounce');
});
If you simply want to detect only a single transition end, without using any JS framework here's a little convenient utility function:
function once = function(object,event,callback){
var handle={};
var eventNames=event.split(" ");
var cbWrapper=function(){
eventNames.forEach(function(e){
object.removeEventListener(e,cbWrapper, false );
});
callback.apply(this,arguments);
};
eventNames.forEach(function(e){
object.addEventListener(e,cbWrapper,false);
});
handle.cancel=function(){
eventNames.forEach(function(e){
object.removeEventListener(e,cbWrapper, false );
});
};
return handle;
};
Usage:
var handler = once(document.querySelector('#myElement'), 'transitionend', function(){
//do something
});
then if you wish to cancel at some point you can still do it with
handler.cancel();
It's good for other event usages as well :)
When having called .before on elements that are detached from the DOM, .end behaves differently than it does with attached elements:
var $div1 = $("div");
console.log($div1.after("foo").end()); // [document]
$div1.detach();
console.log($div1.after("foo").end()); // [<div></div>]
(Fiddle: http://jsfiddle.net/R2uc7/2/)
Apparently, .before causes different behaviour to .end depending on the node being attached or detached. I don't see the logic and I'm not sure what I can rely on.
Could someone enlighten me on the defined behaviour of .end combined with .before?
jQuery v1.7.2 uses pushStack to build the new DOM elements.
pushStack adds items to the jQuery object's stack (go figure!), and end pops the last one off, returning the rest of the stack (whatever remains).
jQuery v1.7.2 line #5860:
annotation mine
before: function() {
if ( this[0] && this[0].parentNode ) {
return this.domManip(arguments, false, function( elem ) {
this.parentNode.insertBefore( elem, this );
});
} else if ( arguments.length ) {
var set = jQuery.clean( arguments );
set.push.apply( set, this.toArray() );
return this.pushStack( set, "before", arguments ); //pushStack in use
}
}
In this JsFiddle : http://jsfiddle.net/maxl/mCXND/
(copied and modified from http://jsfiddle.net/ud3323/XMgwV/)
I try to create an Ember DatePicker based on JQuery's.
The first problem I run into is this line :
var ui = jQuery.ui[this.get('uiType')](options, this.get('element'));
jQuery.ui[this.get('uiType')] doesn't return a function, so I suppose that the solution
that I started with works for some jQueryUI widgets, but not all.
I would like a solution that will work for all JQuery-UI widgets,
and in particular JQueryUI's Datepicker.
Thanks
If you look at the jqueryui code, you see that some of them are invoked as a function, others not. You can solve it using this:
var ui;
if (typeof jQuery.ui[this.get('uiType')] === 'function') {
ui = jQuery.ui[this.get('uiType')](options, this.get('element'));
} else {
ui = this.$()[this.get('uiType')](options);
}
working example: http://jsfiddle.net/PzsrT/7/
One more thing about jQuery UI's datepicker widget as a EmberJS Mixin.
If you want to supply a callback function to handle the beforeShowDay event, you will raise this error:
Uncaught TypeError: Cannot read property '0' of undefined
even if your callback function (in your ember view) return an array, like it's specified in the jqueryui doc
beforeShowDay: function(date){
some code...
return [true, ''];
};
This happens because nothing is returned after the callback.call in the _gatherEvents function
_gatherEvents: function(options) {
var uiEvents = this.get('uiEvents') || [], self = this;
uiEvents.forEach(function(event) {
var callback = self[event];
if (callback) {
// You can register a handler for a jQuery UI event by passing
// it in along with the creation options. Update the options hash
// to include any event callbacks.
options[event] = function(event, ui) { callback.call(self, event, ui); };
}
});
}
I fix this by adding a return statement before the callback.call.
_gatherEvents: function(options) {
var uiEvents = this.get('uiEvents') || [], self = this;
uiEvents.forEach(function(event) {
var callback = self[event];
if (callback) {
// You can register a handler for a jQuery UI event by passing
// it in along with the creation options. Update the options hash
// to include any event callbacks.
options[event] = function(event, ui) { return callback.call(self, event, ui); };
}
});
}
working example http://jsfiddle.net/thibault/qf3Yu/
I want to make "jQuery UI TAB" blink (like notification).
I have diffrent tabs (Inbox | Sent | Important). My timer function checks if there is a new message in inbox, if so, I want the Inbox tab to start blinking/ flashing unless its clicked open.
Have tried diffrent options like .effect(..), .tabs(fx: {..}) but nothing seems to work :(
Any idea if its possible or not?
Yes it's definitely possible.
To give me some practice, I've written a jQuery blinker plugin for you:
jQuery:
(function($){
// **********************************
// ***** Start: Private Members *****
var pluginName = 'blinker';
var blinkMain = function(data){
var that = this;
this.css(data.settings.css_1);
clearTimeout(data.timeout);
data.timeout = setTimeout(function(){
that.css(data.settings.css_0);
}, data.settings.cycle * data.settings.ratio);
};
// ***** Fin: Private Members *****
// ********************************
// *********************************
// ***** Start: Public Methods *****
var methods = {
init : function(options) {
//"this" is a jquery object on which this plugin has been invoked.
return this.each(function(index){
var $this = $(this);
var data = $this.data(pluginName);
// If the plugin hasn't been initialized yet
if (!data){
var settings = {
css_0: {
color: $this.css('color'),
backgroundColor: $this.css('backgroundColor')
},
css_1: {
color: '#000',
backgroundColor: '#F90'
},
cycle: 2000,
ratio: 0.5
};
if(options) { $.extend(true, settings, options); }
$this.data(pluginName, {
target : $this,
settings: settings,
interval: null,
timeout: null,
blinking: false
});
}
});
},
start: function(){
return this.each(function(index){
var $this = $(this);
var data = $this.data(pluginName);
if(!data.blinking){
blinkMain.call($this, data);
data.interval = setInterval(function(){
blinkMain.call($this, data);
}, data.settings.cycle);
data.blinking = true;
}
});
},
stop: function(){
return this.each(function(index){
var $this = $(this);
var data = $this.data(pluginName);
clearInterval(data.interval);
clearTimeout(data.timeout);
data.blinking = false;
this.style = '';
});
}
};
// ***** Fin: Public Methods *****
// *******************************
// *****************************
// ***** Start: Supervisor *****
$.fn[pluginName] = function( method ) {
if ( methods[method] ) {
return methods[method].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof method === 'object' || !method ) {
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + method + ' does not exist in jQuery.' + pluginName );
}
};
// ***** Fin: Supervisor *****
// ***************************
})( jQuery );
See it in action here
The plugin and the fiddle are pretty raw in that I haven't tried to integrate with jQuery-ui-tabs. This may be easy or hard, I don't know, but providing each tab is addressable by class or id then it shouldn't be too difficult.
Something you may need to consider is stopping a blinking tab when it is clicked. For this you may wish to call the .blinker('stop') method directly (with a .on('click') handler) or from an appropriate jQuery-ui-tabs callback.
API
The plugin is properly written in jQuery's preferred pattern. It puts just one member in the jQuery.fn namespace and .blinker(...) will chain like standard jQuery methods.
Methods :
.blinker('init' [,options]) : Initialises selected element(s) with blinker behaviour. Called automatically with .blinker(options), or just .blinker() in its simplest form.
.blinker('start') : causes selected element(s) to start blinking between two styles as determined by plugin defaults and/or options.
.blinker('stop') : causes selected element(s) to stop blinking and return to their natural CSS style(s).
Options : a map of properties, which determine blinker styles and timing:
css_0 : (optional) a map of css properties representing the blink OFF-state.
css_1 : a map of CSS properties representing the blink ON-state.
cycle : the blink cycle time in milliseconds (default 2000).
ratio : ON time as a proportion of cycle time (default 0.5).
By omitting css_0 from the options map, the OFF state is determined by the element(s)' natural CSS styling defined elsewhere (typically in a stylesheet).
Default values are hard-coded for css_1.color, css_1.backgroundColor, cycle time and ratio. Changing the default settings programmatically is not handled, so for different default styling the plugin will need to be edited.
jQuery comes by default with a slew of effects to pick from. You can easily use them wherever you see the need for them and they can be applied like so:
$('#newmsg').effect("pulsate", {}, 1000);
Demo
yes... this is what you need...!!!
this is javascript
if(newmessage==true){
$('#chat-86de45de47-tab').effect("pulsate", {}, 1000);
}
i think it's