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    Developer Guide

    1. Composite API Example
      1. Scripted Lanes
      2. Compound Organization Hierarchy
      3. Dynamic Lanes
      4. Delegation
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      6. Runtime Lanes
        1. Todo Validation
      1. Release Your User Login
      1. Collections To Array
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          1. Composite API Design Tab
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          1. Providers
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          1. Roles entities
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          1. Project Files Tab
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          1. Web Interface JS Tab
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            1. Image Widget
            2. FileUpload Widget
            3. StaticText Widget
            4. ProgressBar Widget
            5. TextInput Widget
            6. JavaScript Widget
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            8. Geolocation Widget
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            17. Array Widget
            18. HTML Editor Widget
            19. Report Widget
            20. Button Widget
            21. Custom Widget
            22. Captcha Widget
            23. HTML Widget
            24. Multi Checkbox Widget
          3. Web Interface Analytics Tab
          4. Web Interface Collection Tab
          5. Web Interface Implementation Tab
          6. Web Interface API Tab
          7. Web Interface Stylesheet Tab
        2. Revision
        3. Custom Lists
          1. Process Variables Tab
          2. Process Measures Tab
              1. Process Timer Event
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              3. Process Intermediary Event
            1. Gate
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              3. Process Task Email Tab
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        1. Home
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        5. API Listener
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        8. Collection
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        10. Autocomplete Widget
        11. Summing Array
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        2. Number Currency Format
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        4. JSONObject Creation
        5. Freemarker Container Test
        6. JSONObject Concatenation
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        8. Special Freemarker Characters
        9. List 1000+ Objects
        10. Dynamic Variable
        11. File Visibility
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        15. JSONArray Conversion
        16. Error Handling
        17. Loop
        18. Array To List
      1. Process Reporting API
      1. Offline
      2. Mobile

    File Preview

    The idea is to allow you to preview the content of the files you've attached to the File Upload widget. Keep in mind that this will only work with plain text (.txt), images or pdf files (won't work with any Word or Excel document for instance).

    • So, first of all, you add a file upload widget to your web interface.

      file_upload_widget

    • Below or next to your file upload widget, you should add an hidden HTML widget and set its id as id_files_preview for example.

      html_widget

    • Then create an hidden Javascript widget (that you can put wherever you want in your webform, at the bottom of it for example) that listens to the variable of your file upload widget (let's call this variable file_upload_var).

      js_widget

    • Finally put the following code into your JS widget :

    If you are planning on only uploading images in the widget, then use :

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    var preview_html_files ="";
    for(f=0;f<JSON.parse(RMPApplication.get("file_upload_var")).length;f++){
         var preview_html_files = preview_html_files + "<img src="+JSON.parse(RMPApplication.get("file_upload_var"))[f].url+" alt='File preview' title='File preview' width='400px' onClick='window.open(\""+JSON.parse(RMPApplication.get("file_upload_var"))[f].url+"\",\"_blank\");'><br>"
    }
    
    id_files_preview.setHtml(preview_html_files);
    id_files_preview.setVisible(true);
    

    If you are thinking on uploading PDFs or txt files :

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    var preview_html_files = "";
    for(f=0;f<JSON.parse(RMPApplication.get("file_upload_var")).length;f++){
         var preview_html_files = preview_html_files + "<iframe src='"+JSON.parse(RMPApplication.get("file_upload_var"))[f].url+"' width='100%' height='400px'></iframe><br>"
    }
    
    id_files_preview.setHtml(preview_html_files);
    id_files_preview.setVisible(true);
    

    And here's the result :

    preview