DsExcel Templates provide the ability to build PDF forms with various form fields using Excel as the designer. The form fields can be defined using the proper syntax while creating template layouts. After the template is processed, the result can be exported to a PDF document that includes the pre-defined form fields.

The "form" property can be used to define a PDF form field. The value of this property is in JSON format and a JSON string can be used to describe all settings of the form field. For example:

• {{ds1.Name(form={"type": "textbox", "name": "username", "value": "Input your name!","font":{"size":15, "color": "#ff0000", "bold": true}, "required": true})}}
• {{(form={"type": "listbox", "name": "cities", "value": ["Xi'An", "BeiJing"],"font":{"size":11, "color": "#ff00ff", "bold": true}, "required": true})}}

The following standard PDF form fields are supported:

• Check box
• Combo box
• List box
• Button
• Radio button
• Signature
• Text box

Bound PDF Form

Consider an example for generating a bound PDF form by using DsExcel Templates. In this case, an address book is generated in PDF by defining textbox fields in template cells. The textbox fields are defined in a way that they relate to common details of an address book, like:

Name : {{ds.Name(form={"type": "textbox", "name": "name","font":{"color": "#000000", "bold": true}})}}
Email: {{ds.Email(form={"type": "textbox", "name": "Email","font":{"color": "#EC881D"}})}}

These textbox fields are bound fields, whose data is populated from the data source and is displayed in the PDF form after template processing. You can also download the Excel template layout from here.

 

After DsExcel processes the template and exports it to a PDF document, the PDF form will look like below:

Unbound PDF Form

Consider an example for generating an unbound PDF form by using DsExcel Templates. In this case, a wage and tax statement is generated in PDF by defining textbox and checkbox fields in template cells, like:

Textbox field:

{{(form={"type": "textbox", "name": "tips","backgroundcolor": "#ffabab"})}}

Checkbox fields:

{{(form={"type": "checkbox", "name": "Retirement","border": {"color": "#ff0000"}})}}

{{(form={"type": "checkbox", "name": "Statutory","border": {"color": "#ff0000"}})}}

These fields are unbound fields, and their data should be filled directly in the PDF form after template processing. You can also download the Excel template layout from here.

 

After DsExcel processes the template and exports it to a PDF document, the PDF form will look like below:

 

 

Various settings can be applied on form fields to enhance and customize their appearance. These are explained as below:

1. Common Settings
   

   Name		Value Type	Example	Description
   type		Enum string                         Standard Form Fields checkbox textbox listbox combobox radiobutton pushbutton signature Custom Form Fields text date time tel email url password month week number search	{"type": "listbox"}	Indicates the type of form field. (Mandatory field)
   alternateName		String	{"alternateName": "The alt name"}	Displays text which is helpful for a user while filling in the form field. Tooltips appear when the pointer hovers briefly over the form field.
   backgroundcolor		String	{"backgroundcolor": "#ffff00"} {"backgroundcolor": "rgb(255, 178, 0)"} {"backgroundcolor": "rgba(188, 100, 0, 255)"}	Indicates background color of the form field.
   border	width	Double	{"border":{"width": 120}}	Indicates width, color and style settings of the border for the form field.
   	color	String	{"border":{"color": "#ffff00"} {"border": {"color": "rgb(255, 178, 0)"}} {"border": {"color": "rgba(188, 100, 0, 255)"}}
   	style	Enum string: none solid dashed beveled inset underline unknown	{"border": {"style": "dashed"}}
   font	size	Double	{"font": {"size": 18}}	Indicates various font settings which can be used in the form field.
   	color	String	{"font": {"color": "#ffff00"}} {"font": {"color": "rgb(255, 178, 0)"}} {"font": {"color": "rgba(188, 100, 0, 255)"}}
   	name	String	{"font": {"name": "sans-serif"}}
   	bold	Boolean	{"font": {"bold>": true}}
   	italic	Boolean	{"font": {"italic": true}}
   locked		Boolean	{"locked": true}	Indicates whether the user can change the properties of field or not.
   name		String	{"name": "The field name"}	Indicates the unique name of field.
   readOnly		Boolean	{"readOnly": true}	Indicates whether the user can change the value of field or not
   required		Boolean	{"required": true}	Indicates whether the field must have a value.
   printed		Boolean	{"printed":false}	Indicates whether to print the field when page is printed.
   hidden		Boolean	{"hidden":true}	Indicates whether to display the field or not.
   mouseUp		JsonObject	{"mouseUp":{"script":"fBox1 = this.getField(\"checkbox\") ;\r\nfBox1.display = display.hidden", "submit":"http://localhost:80//myscript#FDF" ,"reset":{"fieldNames": ["checkbox", "textbox"]}}}	Indicates the actions to be performed in sequence when the mouse button is released in the active area of the field.
   mouseDown		JsonObject	{"mouseDown":{"script":"fBox1 = this.getField(\"checkbox\") ;\r\nfBox1.display = display.hidden", "submit":"http://localhost:80//myscript#FDF" ,"reset":{"fieldNames": ["checkbox","textbox"]}}}	Indicates the actions to be performed in sequence when the mouse button is pressed in the active area of the field.
   mouseEnter		JsonObject	{"mouseEnter":{"script":"fBox1 = this.getField(\"checkbox\") ;\r\nfBox1.display = display.hidden", "submit":"http://localhost:80//myscript#FDF" ,"reset":{"fieldNames": ["checkbox","textbox"]}}}	Indicates the actions to be performed in sequence when the mouse button enters the field's active area.
   mouseExit		JsonObject	{"mouseExit":{"script":"fBox1 = this.getField(\"checkbox\") ;\r\nfBox1.display = display.hidden", "submit":"http://localhost:80//myscript#FDF" ,"reset":{"fieldNames": ["checkbox","textbox"]}}}	Indicates the actions to be performed in sequence when the mouse button exitsthe field's active area.
   onFocus		JsonObject	{"onFocus":{"script":"fBox1 = this.getField(\"checkbox\") ;\r\nfBox1.display = display.hidden", "submit":"http://localhost:80//myscript#FDF" ,"reset":{"fieldNames": ["checkbox","textbox"]}}}	Indicates the actions to be performed in sequence when the annotation receives the input focus.
   onBlur		JsonObject	{"onBlur":{"script":"fBox1 = this.getField(\"checkbox\") ;\r\nfBox1.display = display.hidden", "submit":"http://localhost:80//myscript#FDF" ,"reset":{"fieldNames": ["checkbox","textbox"]}}}	Indicates the actions to be performed in sequence when the annotation loses the input focus.
   format		String	{"format":"event.value = (event.value * 100) + \" % \";"}	Indicates a JavaScript action to be performed before the field is formatted to display its current value. This action can modify the field’s value before formatting.
   validate		String	{"validate":"if (event.value < 0 || event.value > 100) {\r\n" +"app.beep(0);\r\n" +"app.alert(\"Invalid value for field \" +event.target.name);\r\n" + "event.rc = false;\r\n" +"}"}	Indicates a JavaScript action to be performed when the field’s value is changed. This action can check the new value for validity.
   calculate		String	{"calculate":"var oil = this.getField(\"Oil\");\r\n"+ "var filter = this.getField(\"Filter\") ;\r\n"+"event.value (oil.value + filter.value) * 1.0825;"}	Indicates a JavaScript action to be performed to recalculate the value of this field when that of another field changes.
   keystroke		String	{"keystroke":"if (!event.willCommit) {\r\n"+"var f =this.getField (\"myPictures\");\r\n"+"var i =this.getIcon(event.change) ;\r\n"+"f.buttonSetIcon(i);\r\n"+"};"}	Indicates a JavaScript action to be performedwhen the user types a keystroke into a text field or combo box or modifies the selection in a scrollable list box. This action can check the keystroke for validity and reject or modify it.
   autofocus		Boolean	{"type": "password" , "autofocus": true}	Indicates whether a date field should automatically get focus when the page loads.
   disabled		Boolean	{"type": "password" , "disabled": true}	Indicates whether a field is disabled or not.
   autocomplete	Enum String		{"type": "date" , "autocomplete": "bday"}	Lets web developers specify if any user needs to provide assistance for automated filling of form field values, as well as guidance to the browser  about what type of information is expected in the field. The behavior of this property depends on the browser implementation.
   	on off name honorific-prefix given-name additional-name family-name honorific-suffix nickname email username new-password current-password one-time-code organization-title organization street-address address-line1 address-line2 address-line3 address-level4 country country-name postal-code cc-name cc-given-name cc-additional-name cc-family-name	cc-number cc-exp cc-exp-month cc-exp-year cc-csc cc-type transaction-currency transaction-amount bday-day language bday bday-day bday-month bday-year sex tel tel-country-code tel-national tel-area-code tel-local tel-local-prefix tel-local-suffix tel-extension impp url photo

   
   

2.  JsonObject Settings
   
   

   Name		Value Type	Example	Description
   script		String	{"script":"fBox1 = this.getField(\"checkbox\");\r\nfBox1.display = display.hidden"}	Indicates an action which causes a script to be compiled and executed by the JavaScript interpreter.
   submit		String	{"submit":"http://localhost:80//myscript#FDF"}	Indicates an action to transmit the names and values of selected interactive form fields to a specified uniform resource locator (URL), presumably the address of a Web server that will process them and send back a response.
   reset	fieldNames	String Array	{"fieldNames": ["checkbox", "textbox"]}	Indicates the list of names of fields that should be processed (or excluded from processing)by this action. If empty then all fields will be processed.
   	exclude	Boolean	{"exclude":true}	Indicates whether to exclude the fields specified in fieldNames from processing (by default, this property is false and the specified fields are included).

        
   Note: Snippets of JavaScript code needs to be escaped.
   
   

3. Checkbox Form Field Settings
   
   

   Name	Value Type	Example	Description
   checkStyle	Enum string: check circle cross diamond square Star	{"checkStyle": "circle"}	Indicates the style of check mark.
   value	Boolean	{"value": true}	Indicates the value of Checkbox. (If the value is missing, DsExcel automatically tries to convert the cell's value to Boolean, and then, set it to the property after processing the template.)
   defaultValue	Boolean	{"defaultValue": false}	Indicates the default value of Checkbox.

   
   

4. Textbox Form Field Settings
   
   

   Name	Value Type	Example	Description
   value	String	{"value": "Hunter"}	Indicates the value of Textbox.
   defaultValue	String	{"defaultValue": "Input your name!"}	Indicates the default value of Textbox.
   combo	Boolean	{"combo":true}	Indicates whether the new value is committed as soon as a selection is made with the pointing device.
   password	Boolean	{"password":true}	Indicates whether the field is intended for entering a secure password that should not be visible on the screen.
   spellcheck	Boolean	{"spellcheck":false}	Indicates whether the text entered in the field is spell-checked.
   scrollable	Boolean	{"scrollable":false}	Indicates whether the field is scrollable to accommodate more text than it fits within its annotation rectangle.
   maxlength	Integer	{"maxlength":10}	Indicates the maximum length of the field’s text, in characters.
   multiline	Boolean	{"multiline":true}	Indicates whether the field can contain multiple lines of text.
   justification	Enum string: left center right	{"justification": "center"}	Indicates the justification to be used while displaying the field’s text.

   
   
   Note: DsExcel also supports custom form fields like date, email, password, month etc. which are inherited from Textbox form field. To know more about these, refer Custom Form Fields.

5. Listbox Form Field Settings
   
   

   Name	Value Type	Example	Description
   value	String Array	{"value": ["US", "UK"]}	Indicates the value of Listbox.
   defaultValue	String Array	{"defaultValue": ["US", "UK"]}	Indicates the default value of Listbox.
   commitOnSelChange	Boolean	{"commitOnSelChange": true}	Indicates whether the new value is committed as soon as a selection is made with the pointing device.
   selectedIndex	Integer	{"selectedIndex": 0}	Indicates the indexes of selected item.
   sort	Boolean	{"sort": true}	Indicates whether the field’s option items should be sorted alphabetically.
   spellCheck	Boolean	{"spellCheck": true}	Indicates whether the text entered in the field is spell-checked.
   selectedIndexes	Integer Array	{"selectedIndexes": [0, 2, 5]}	Indicates the indexes of selected items.
   multiSelect	Boolean	{"multiSelect": true}	Indicates whether more than one of the field’s option items may be selected simultaneously.
   exportValue	String	{"exportValue": "TheResult"}	Indicates the export value of Listbox field.

   
   

6. Combobox Form Field Settings
   
   

   Name	Value Type	Example	Description
   value	String Array	{"value": ["US", "UK"]}	Indicates the value of Combobox.
   defaultValue	String Array	{"defaultValue": ["US", "UK"]}	Indicates the default value of Combobox.
   commitOnSelChange	Boolean	{"commitOnSelChange": true}	Indicates whether the new value is committed as soon as a selection is made with the pointing device.
   selectedIndex	Integer	{"selectedIndex": 0}	Indicates the indexes of selected item.
   sort	Boolean	{"sort": true}	Indicates whether the field’s option items should be sorted alphabetically.
   spellCheck	Boolean	{"spellCheck": true}	Indicates whether the text entered in the field is spell-checked.
   editable	Boolean	{"editable": true}	Indicates whether the Combobox includes an editable text box as well as a drop-down list.

   
   

7. Radiobutton Form Field Settings
   
   

   Name	Value Type	Example	Description
   checkStyle	Enum string: check circle cross diamond square Star	{"checkStyle": "circle"}	Indicates the style of check mark.
   groupName	String	{"groupName": "Teams"}	Indicates the name of radio button group. Radio buttons with the same group name are added in the same group. (If the value is missing, DsExcel automatically adds radio buttons expanded from the same template cell to the same group after processing the template)
   radiosInUnison	Boolean	{"radiosInUnison": true}	Indicates whether a group of radio buttons within a radio button field that use the same value for the on state will turn on and off in unison. If one is checked, they are all checked. If clear, the buttons are mutually exclusive (the same behavior as HTML radio buttons).
   checkedChoice	String	{"checkedChoice": "Team5"}	Indicates the value of checked option.
   defaultCheckedChoice	String	{"defaultCheckedChoice": "Team1"}	Indicates the value of checked option when the user first opens the form.

   
   

8. Pushbutton Form Field Settings
   
   

   Name		Value Type	Example	Description
   highlighting		Enum string: none invert outline push	{"highlighting": "outline"}	Indicates the annotation’s highlighting mode.
   caption		String	{"caption": "Push"}	Indicates the button's caption.
   image		Base64 String	{"image": "The base64 image data."}	Indicates the button’s image.
   captionImageRelation		Enum string: captionOnly imageOnly captionBelowIcon captionAboveIcon captionAtRight captionAtLeft captionOverlaid	{"captionImageRelation": "captionBelowIcon"}	Indicates the positioning of button's caption relative to image.
   downCaption		String	{"downCaption": "Push Down"}	Indicates the button's caption when user presses the button.
   downImage		Base64 String	{"downImage": "The base64 image data."}	Indicates the button’s image when user presses the button.
   rolloverCaption		String	{"rolloverCaption": "Rollover"}	Indicates the button's caption when the user rolls the cursor into its active area without pressing the mouse button.
   rolloverImage		Base64 String	{"rolloverImage": "The base64 image data."}	Indicates the button’s image when the user rolls the cursor into its active area without pressing the mouse button.
   imageScale	mode	Enum string: always bigger smaller never	{"imageScale": {"mode": "bigger"}}	Indicates the scaling mode.
   	proportional	Boolean	{"imageScale": {"proportional": true}}	Indicates whether an image should be scaled proportionally.
   	x	Float	{"imageScale": {"proportional": true, "x": 0.6}}	Indicates the position of an image. The two numbers between 0.0 and 1.0 indicates the fraction of leftover space to allocate at the left and bottom of an image. A value of (0.0, 0.0) positions the image at the bottom-left corner of the button rectangle. A value of (0.5, 0.5) centers it within the rectangle. This value is used only if the image is scaled proportionally.
   	y	Float	{"imageScale": {"proportional": true, "y": 0.8}}
   	ignoreBorder	Boolean	{"imageScale": {"ignoreBorder": true}}	Indicates whether a button's appearance should be scaled to fit fully within the bounds of the annotation without taking into consideration the line width of the border.

   
   

9. Signature Form Field Settings
   
   

   Name	Value Type	Example	Description
   lockType	Enum string: all specifiedOnly allButSpecified	{"lockType": "specifiedOnly"}	Indicates the type of locked fields.
   fieldNames	String Array	{"fieldNames": ["signerName", "time"]}	Indicates the list of field names which should be included or excluded from processing depending on lockType property.
   LockedFields	Boolean	{"LockedFields": true}	Indicates whether to lock the fields when SignatureFormField is signed or not.

   
   
   Note: DsExcel Template generates only digital signature fields in PDF documents. If you want to add signatures on signature fields, you need to use DsPdf or PDFBox to process.

Apart from the above mentioned standard PDF form fields, DsExcel also supports custom form input types to generate PDF forms. Refer to Custom Form Input Types for more information.