A questo punto occorre intercettare e gestire gli eventi propri del drag and drop. L’evento dragstart indica il verificarsi di un’azione di trascinamento. In corrispondenza di questo evento possiamo definire quale informazione associare al trascinamento.
Element. By. Id(. Questo metodo prevede due parametri: il primo indica il tipo di dato mentre il secondo indica l’informazione vera e propria. Nel nostro caso abbiamo specificato che vogliamo trasferire un’informazione di tipo testo e che l’informazione trasferita . Quest’ultima operazione . Ad esempio, quando l’elemento target . Ad esempio, sono previsti i seguenti tre eventi aggiuntivi che ci consentono di avere una granularit. Ad esempio possiamo evidenziare l’elemento su cui .
Craig summarizes the main HTML5 API methods you require to implement file drag and drop, display on the client and upload to the server while showing progress bars. 40 thoughts on “Drag and Drop File Upload for Microsoft Dynamics NAV 2013 R2”. A reusable AngularJS directive leveraging HTML5 Drag and Drop and the FileReader API. 41 Responses on the article “Drag and Drop and Automatically Send to the Server”. Drag and drop files into your website with these top jQuery file upload scripts and you can see the html progress bar showing the total upload progress of the file.
Creating a jQuery and HTML5 drag-and drop file uploader is easy. This tutorial walks you through the process step by step and includes working source code. Supported only in Chrome 21+. W3C has a working draft on File System API that introduces lots of interesting features allowing us to read and write. In Drag and Drop File Upload jQuery example, I have explained how to implement drag and drop file upload using HTML5 and jQuery AJAX API. Drag and drop is supported. HTML5 Drag and Drop file upload with preview using jQuery and MVC 4 17 January 2013 Comments Posted in ASP.NET, HTML 5, jQuery, MVC, upload, c#.
Ad esempio, possiamo fornire indicazioni al browser sul tipo di operazione associata al drag and drop tramite la propriet. Oppure possiamo specificare noi un’icona personalizzata tramite il metodo data. Transfer. set. Drag.
Image(). Per ulteriori approfondimenti fare riferimento alle specifiche ufficiali. Se vuoi aggiornamenti su Drag and drop inserisci la tua e- mail nel box qui sotto.
Also removed fd. to. Binary(). Verified to work on 6. Mi. B files in latest Chrome and Firefox.
Also added two extra headers when sending files: X- File- Type (MIME) and X- File- Date (GMT; modification date or //now// if unknown). Support for Chrome directories. Feb 2. 01. 4Added list. Entries() method to File using W3. C's draft on File System API (now supported in Chrome 2. This is pretty cool — check out the sample.
Thanks to kevinkrouse for the reference. Also added recreate.
Input option to Drop. Handle — when enabled (by default) lets user upload the same file twice in a row but has a slight chance to break your old code. Thanks to rafaelmaiolla. Upload sample for ASP. Net Web Forms. 8 Feb 2. Options for send. To. 3 Feb 2. 01. 4It is now possible to pass an arbitrary object of values to send.
To() overriding things like XHR method (POST by default). They can also be overriden in File.
Internet Explorer 1. Jan 2. 01. 4Added and verified support for Internet Explorer 1. File API. Internet Explorer 1. File. Drop — revamped. Jan 2. 01. 4File. Drop just got a brand- new look and feel.
Revised and extended documentation, dedicated website, fully documented code, complete test suite and validation across all possible browsers. New features like data reading and Blob slicing. Two years and one day sharp after the first launch. New logo. 15 Feb 2. Thanks to Camilo.
MM for creating a beautiful new logo! Fixes and features. Jan 2. 01. 3Now throwing exception when attempting to create a Drop. Handle on a non- existent DOM node.
Fixed support for inputless zones (Drop. Handle. opt. input set to null)Added fd. Drop. Handle objects. Added on. event - per- zone event previewer for any File. Drop class in addition to global fd. Obj. Callj. Query integration. Jan 2. 01. 3j. Query integration function was added — simply execute fd.
Query(); to plug it into $. All zone and file events are available through regular events — $. More details in this section. Disabled drag & drop in IE 6- 1. Sep 2. 01. 2Disabled drag & drop for Internet Explorer 1. POST body upon submission. Regular < iframe> upload is still possible.
Thanks to Andreas, listerical. Also, drag & drop was verified to work in Opera 1.
Fixed send. As. Binary() in Chrome. Sep 2. 01. 2Fixed send. As. Binary() method for Chrome (and possibly others) - thanks to scratchresistor. Fixed < fieldset> in Firefox 1. Jun 2. 01. 2Fixed visual bugs when < fieldset> was used as a drop zone in Firefox 1. First version. 28 Jan 2. Logos & buttons.
If you like File. Drop you can spread the word with these cute image (feel free to hotlink; browse directory). Download & License. File. Drop is released in public domain — feel free to use it however you like. However, a humble backlink to this site (filedropjs. First File. Drop release has been in January 2. Download File. Drop — includes demo page, minified (filedrop- min.
Java. Script files. To use File. Drop you only need one of them. Additionally, if you want to use legacy upload for browsers not suporting drag & drop (these include IE and Opera) you need to include the following CSS (you can change it but be careful not to break things): css. HTML5 more the support. New File. Drop version is not a drop- in replacement for the old one. However, there are no changes that will require you rewriting the code completely.
Now it’s easy to export this module or replace window. Events were moved from on property to events (the former still exists but is deprecated).
Added event() and preview() methods — an interface to un/binding File. Drop events (not DOM events).
Renamed zone property into el (old name is still accessible but deprecated). Query plugin now adds $el property that requals to $(el): zone. See event() description for details. Reformatted the code, removed extra indentation. Set. Classes. To() was removed. Added File’s xhr.
Setup event (occurs before send. XHR). Renamed send. XHR event to xhr. Send (old name is still accessible but deprecated). Added type (MIME) and mod. Date (Date object) props to File.
Replaced native array object given to send event with File. List- like array- like object with some useful methods. Added File. read.
Data() and read. Data. URI() to read binary/data URL/text data of the underlying native File object. Object- wise event preview was renamed from event to any. Obj. Call() property renamed to on. Object. Call. Added drop. Effect option for Drop. Handle. It’s typically marked up in HTML and then retrieved by ID as in the example below.
In this example, if you select or drop a file nothing will happen yet. JSvar options = . Below example will handle AJAX errors.
Legacy xml< iframe> upload doesn’t support error callbacks. JSvar zone = new File. Drop('zone. 3'). zone. Note that it won’t be fired by a timeout — you need so set it up yourself like this.
Note that it isn’t possible to catch errors of legacy xml< iframe> upload so the best way is to have a timeout timer that will be aborted if server response is received earlier than it triggers. JSvar zone = new File. Drop('zone. 4'). zone. However, if there are many elements this can be troublesome. When creating a drop zone File. Drop will first check to see if it already contains a form that can be used for legacy upload.
If it does — no extra elements will be created which means that we can wrap all our input fields into a form and when File. Drop automatically submits it to the server as a result of user selecting a file that request will come along with the relevant POST data. For example, you have a large text area where a user can input text manually but also drop a file to be sent to the server via AJAX. This way you don’t need to create a hidden file input that, when clicked, will allow the user to select files to upload. The server can respond with some modified version of the original file that you will use to populate the area. With this iframeoptions and events are no more working. JSvar options = .
Once we have obtained a fd. File object in File. Drop’s sendevent we can use its read.
XXX()methods to generate thumbnails or just read text or raw binary data. Data() is heavily documented in the comments with many examples so check out the sources for the details.
See also HTML5 File API samples below and sample thumb generator of the demo page. JSvar options = . In Firefox this event only works on big files.
JSvar zone = new File. Drop('zone. 10'). File. Drop simplifies and uniformizes this access across different borwsers. We can use HTML5 drag & drop events to catch dropped files without having to select them in a file dialog. We listen to send event just like usual but disable file input creation on this drop zone to be «completely HTML5» (no support for older browsers). File. Drop makes it easy to generate thumbnails prior to sending files to the server — just when they were dropped onto your drop zone. It requires HTML5 File API support and won’t work on fallback xml< iframe> uploads.
See also on- line demo page with a similar example. JSvar zone = new File. Drop('zone. 13', ! Cannot read your image.'). For thumbs (value of xml< imgsrc=.
We can read file from arbitrary offset with arbitrary length and even specify a Content- Type for the new chunk. We can treat this chunk as Data URI, text or binary data just like entire file. Error: ' + e. fd. Error). . These options can be combined in different ways to achieve desired effect. Here’s another idea: jsfile. File. Drop lets you use its File.
List and File methods to list folders, upload files, read file data (full or partial) and so on. JSvar zone = new File. Drop('zone. 15', . DOM node events are triggered before those assigned to obj.
XXX arrays and if a node handler returns non- null value on’s events are skipped. See extensive comments in the sources for more details and examples. This object is array- like and contains useful methods for filtering, sorting and updating the collection. Below are some examples — look in the docs and sources for complete info.
This object includes global options, utility functions and classes (mainly File. Drop itself). More on this approach here.
See how it works in call. All. Of. Object(). All Drop. Handle objects that were instantinated on this page. Note that these are not File.
Drop instances as not all Drop. Handles might be part of File. Drop+s. Use Drop. Handle. filedrop property to determine parent File.
Drop, if any. is. IE6. Test for IE version, true for 6- 7 and below and false for any other version/browser. IE9. Test for IE version, true for 9 and below and false for any other version/browser. Chrome. Test for Google Chrome.
This isn’t used to determine available File API but only to work around certain event glitches. Prop. Name of Function object property where event namespace is stored. See func. NS(), split. NS(), Drop. Handle’s event().
Find examples and up- to- date information in the extensively commented source code. Checks if given object is a proper DOM node. If tag is passed also checks if that DOM node is of the same tag (case- insensitive). Returns true or false.
XHRCreates new XMLHttp. Request object. Falls back for Active.
X for IE 6. Throws an exception if couldn’t succeed (this shouldn’t happen these days). Array. Checks if given value is a native Array object. Note that j. Query and other pseudo- arrays are reported as false. Arrayjsfunction (value, skip. First). Converts passed value into an array.
If value is already an array its copy is returned (so changing value later doesn’t affect the returned clone). Useful for turning arguments into arrays. Eventjsfunction (element, type, callback). Adds an event listener to a DOM element.
Works for old IE as well as modern W3. C- compliant browsers.
Does nothing if any parameter is invalid. Returns the DOM element itself or whatever was given as this argument. Event. Stops propagation and default browser action of an event.
Works for old IE and modern W3. C- compliant browsers. Classjsfunction (element, class. Name, append). Adds or removes HTML class of a DOM element.