Drag and Drop from Filessytem

Questions and answers on designing your Servoy solutions, database modelling and other 'how do I do this' that don't fit in any of the other categories

Drag and Drop from Filessytem

Postby GabrielWyss » Fri Jun 01, 2018 3:02 pm

Is it possible to get a filehandle with drag and drop from Windows-Explorer to a Servoy Solution?

Thanks for any help.
Gabriel Wyss
om computer - SAN Partner
http://www.omcomputer.ch
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Re: Drag and Drop from Filessytem

Postby Ruben79 » Fri Jun 01, 2018 5:38 pm

I'm sure it's possible in smart-client and ngclient. Not sure about webclient.
For NGclient there is the FileUpload web component: https://github.com/Servoy/servoy-extra- ... Fileupload. Really easy to use.
For smartclient you can just implement the onDrop event of a form and checkout the event that is passed. We do something like this:
Code: Select all

/**
* Handle a drag over. Determines of a drop is allowed in this location.
*
* Return true is drop is allowed, otherwise false.
*
* @param {JSDNDEvent} event the event that triggered the action
*
* @returns {Boolean}
*
* @protected
*
* @properties={typeid:24,uuid:"F30ED7CA-06DA-4137-AE6C-46FB7024C12E"}
*/
function onDragOver(event) {
   var log = scopes.svyLogManager.getLogger('stb.filednd'),
   log.debug('onDragOver triggered');

   if (event.getSource() && event.data) {
      elements.droparea.visible = true;
      return true;
   }
   return false;
}

/**
* Handle a drop.
* Return true if drop has been performed successfully, otherwise false.
*
* @param {JSDNDEvent} event the event that triggered the action
*
* @returns {Boolean}
*
* @protected
*
* @properties={typeid:24,uuid:"A7CA099B-8F5A-4BE6-91E8-992B887A6E14"}
*/
function onDrop(event) {
   var log = scopes.svyLogManager.getLogger('stb.filednd'),
      result = false,
      content,

      /** @type {plugins.file.JSFile[]} */
      files = [];

   log.debug('onDrop triggered');
   try {
      // check if the dragged stuff is a file
      log.debug('Preparing for a drop');
      if (event && event.dataMimeType && event.dataMimeType.indexOf('application/x-java-file-list') > -1) {
         
         content = event.data.toArray();
         files = content.map(function(f) {
            return plugins.file.convertToJSFile(f);
         })
         
         files.forEach(/** @param {plugins.file.JSFile} file */
         function(file) {
            if (file.isDirectory()) {
               log.debug('Not saving directory {}', file.getAbsolutePath())
            } else if (!file.canRead()) {
               log.debug('Cannot read file {}', file.getAbsolutePath())
            } else if (file.exists()) {
               log.debug('Importing file {}', file.getAbsolutePath())
               // save the file
            }
         });
            
         result = true;   
      
      } else {
         throw 'Dropped stuff was not recognized as a file.';
      }
      log.debug('Drop successful');
   } catch (ex) {
      log.error(ex.toString());
   } finally {
      elements.droparea.visible = false;   
   }

   return result
}

/**
* Handle end of a drag.
*
* @param {JSDNDEvent} event the event that triggered the action
*
* @protected
*
* @properties={typeid:24,uuid:"F49045DC-B1F1-4A8A-820D-19DF997C1110"}
*/
function onDragEnd(event) {
   elements.droparea.visible = false;   
}

Ruben de Jong
Stb Software Development
SAN Partner

Stb Software Development - http://www.stb.nl
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Re: Drag and Drop from Filessytem

Postby mboegem » Sat Jun 02, 2018 1:07 pm

I've done this on web client too, but it's a lot more work
I think I used dropzoneJS for that
_____________________
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Re: Drag and Drop from Filessytem

Postby swingman » Tue Jun 05, 2018 10:17 am

Hi Ruben,

the smart-client code, does it work on Java 8? I tried it in developer on the Mac and I could not get it to work.
Drag-and-drop is another good reason to move to NG-client...
Christian Batchelor
Certified Servoy Developer
Batchelor Associates Ltd, London, UK
http://www.batchelorassociates.co.uk

http://www.postgresql.org - The world's most advanced open source database.
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