jQuery in XPages #3 – Masked Input – How does it work?

Masked Input

This article is published in conjunction with the main jQuery in XPages #3 – Masked Input

 

How does it work?

To add the Masked Input capability to your XPages in a generic, re-usable manner you will need to do the following:

Adding the JavaScript libraries

In the designer menu select Window | Show Eclipse Views | Package Explorer

Opening the package explorer in Domino Designer
Opening the package explorer in Domino Designer

Search for the WebContent folder
On your local machine make a “js” folder with the following files in it

Drag and drop the js folder into the WebContent folder of your database

Drag and Drop your Masked Input js file
Drag and Drop your Masked Input js file

Creating the custom control to load the JavaScript libraries

Create the following ccMaskedInput custom control in your database

<?xml version="1.0" encoding="UTF-8"?>
<xp:view xmlns:xp="http://www.ibm.com/xsp/core">

	<xp:this.resources>
		<xp:script src="js/jquery-1.7.1.min.js"
			clientSide="true">
		</xp:script>
		<xp:script src="js/x$.js"
			clientSide="true">
		</xp:script>
		<xp:script src="js/jquery.maskedinput-1.3.min.js"
			clientSide="true">
		</xp:script>
	</xp:this.resources>
</xp:view>

You now have a re-usable custom control which can be added to any of the XPages in your database.

Creating your XPage

  • Create a new XPage and create a new Domino Document data source from one of the forms in the database.
  • Drag and drop your fields to the XPage
  • Drag and drop the ccMaskedInput custom control onto your XPage
  • Add the following script block to the bottom of your XPage/custom control and change the fields names to match your field names. (Change the masks to match the masks you want on your form)
 	<xp:scriptBlock id="scriptBlock1">
		<xp:this.value><![CDATA[
		jQuery(function($){
   			x$("#{id:date1}").mask("99/99/9999");		//change the field name
   			x$("#{id:phone1}").mask("(999) 999-9999");	//change the field name
   			x$("#{id:SSN1}").mask("999-99-9999");		//change the field name
   			x$("#{id:custom1}").mask("99-99-aaaa-9");	//change the field name
		});

		]]></xp:this.value>
	</xp:scriptBlock>

And it’s as easy as that !

In a Nutshell

The Input Mask code:

  • Adds the programmed “Mask” to the field as the page loads
  • Tracks what you type and how many characters you have added so far
  • Checks what you type and matches it against the allowable character list for that character at that position in the string
  • Updates the mask accordingly and moves past the “Mask” characters is applicable.


jQuery in XPages #3 – Masked input

This week we are going to look at a Masked Input plugin which provides another easy to implement but big impact to the users interface improvement capability.

The Demonstration

Click here to see a demonstration of the Input Mask plugin running within an XPage

The Sample Database

Rather than create a new URL every week I am going to stick with the same one from now on. It will contain a conglomeration of all the previous weeks examples and is basically a copy of the demo database on the website. The jQuery in XPages Sample Database

Masked Input

The Masked Input plugin by Josh Bush turns a plain editable field into a field which:

  • Increases user buy in by adding a visually appealing enhancement to the XPage
  • Allows the developer to pre-define the input order and type of keyboard characters
  • Shows the user what the application expects them to input
  • Enforces validation rules by preventing users from typing in potentially incorrect values
Input Mask example

The Input Mask adds the (__) ___-____ x_____ into the field and as the user starts to type the “Mask” is replaced by the keyed value.

Input Mask example user input
Input Mask example user input

If the user attempt to try and enter anything other than a number nothing happens. This effect is very easily implemented using only a few lines of JavaScript to instantiate the code. Remember in XPages we have to use the x$ functionand the {id:} name of the field to select the real id in the HTML Document Model (DOM)

jQuery(function($){
   x$("#{id:date}").mask("99/99/9999");
   x$("#{id:phone}").mask("(999) 999-9999");
   x$("#{id:ssn}").mask("999-99-9999");
});

The Input mask plugin API comes with an abundance of other features you can change like:

  • Changing the mask character from _ to something else
  • Triggering a function once the mask is complete (all characters filled in)
  • Supplying your own mask definition (i.e if you want a specific character other than a-zA-Z0-9)
  • Allowing for wildchard characters (you don’t care what the user types)
  • Allowing for optional characters – (option phone extension or 4 final characters on a 9 digit zip code)

Adding this plug in to your database will take less than 5 minutes and you can improve the user interface immediately. Check out The Masked Input website for more information and futher information on the API parameters/capabilities.

Note:When you are submitting the form you will still need to validate it as the Input Mask does not handle validation outside of the field itself. The whole field value is submitted (Input Mask value as well) so if you create a (123) 123-1234 mask you will need to make sure you can accept that on the back end in a text field and you don’t need a 9 digit number.

For more information on how to add this capability to your XPages check out the “how does it work” article

HTML5 drag and drop demonstration in an XPage

I saw an article on HTML5 drag and drop and wondered how hard it would be in XPages.

Demonstration

Here is a link to the working demo of HTML5 drag and drop in an XPage – this is FF and Chrome only as drag/drop is not supported until IE10

How does it work?

I created an XPage and added a simple data table

Data Table
XPages Data Table

Going off the text in the article I tried to add the events to the Fruit label column – unfortunately you cannot add custom attributes to an xp:text

Cannot add custom attributes to an <xp:text
Cannot add custom attributes to an <xp:text

So once again – back to using dojo selectors to get what we want.

The HTML generated by the XPage creates all the fruit labels (Oranges, Bananas, Apples) with an id=blah:_1blah ending in “someFruit”

<tr><td class="xspColumn"><span id="view:_id1:_id2:_id31:viewPanel1:0:column3:someFruit" class="xspTextComputedField">Oranges</span></td>
<td class="xspColumn"><span id="view:_id1:_id2:_id31:viewPanel1:0:column1:computedField2" class="xspTextComputedField">2.0</span></td>
<td class="xspColumn"><span id="view:_id1:_id2:_id31:viewPanel1:0:column2:computedField3" class="xspTextComputedField">4</span></td>
</tr>
<tr><td class="xspColumn"><span id="view:_id1:_id2:_id31:viewPanel1:1:column3:someFruit" class="xspTextComputedField">Bananas</span></td>
<td class="xspColumn"><span id="view:_id1:_id2:_id31:viewPanel1:1:column1:computedField2" class="xspTextComputedField">1.0</span></td>
<td class="xspColumn"><span id="view:_id1:_id2:_id31:viewPanel1:1:column2:computedField3" class="xspTextComputedField">2</span></td>
</tr>

We can get a handle on these labels using dojo.query(“[id$=someFruit]”) which will get all elements with an id attribute ending in “someFruit”

Once we have all of those elements we can add a draggable and ondragstart attribute to them easily using dojo.attr

			dojo.query("[id$=someFruit]").forEach( function(node){
				 dojo.attr(node, "draggable", "true");
				 dojo.attr(node, "ondragstart", "dragIt(event);");
			});

Update – Thanks to Tim Tripcony for pointing this out
If you are using 8.5.3 you can add the custom attributes to the field in the designer client. This removes the need to use the dojo.query

<xp:text escape="true" id="someFruit" value="#{colname1.Fruit}" style="color:rgb(0,0,255)">
	<xp:this.attrs>
		<xp:attr name="ondragstart" value="dragIt(event);"></xp:attr>
		<xp:attr name="draggable" value="true"></xp:attr>
	</xp:this.attrs>
</xp:text>

Then we just need somewhere to drop them…
I added the same DIV elements from the example to the XPage

				<xp:td>
					<div id="place1" ondrop="dropIt(event);"
						ondragover="event.preventDefault();">
					</div>
				</xp:td>
				<xp:td>
					<div id="place2" ondrop="dropIt(event, true);"
						ondragover="event.preventDefault();">
					</div>
				</xp:td>

and added the javascript functions to a scriptblock at the bottom of the page

	//function called when drag starts
		function dragIt(theEvent) {
			//tell the browser what to drag
			theEvent.dataTransfer.setData("Text", theEvent.target.id);
		}

		//function called when element drops
		function dropIt(theEvent, keepMe) {
			//get a reference to the element being dragged
			var theData = theEvent.dataTransfer.getData("Text");
			//get the element
			var theDraggedElement = document.getElementById(theData);

			//add it to the drop element
			if (keepMe){
				//Add a clone of the element to the field - rather than move it
				var newObj=dojo.clone(theDraggedElement)
				theEvent.target.appendChild(newObj);
			} else {
				theEvent.target.appendChild(theDraggedElement);
			}
			//Add a new line for visual line up
			var theBR=document.createElement("br")
			theEvent.target.appendChild(theBR);
			//instruct the browser to allow the drop
			theEvent.preventDefault();
		}

I changed the example slightly to add a clone capability rather than just drag and drop

Drag and Drop example 1
Drag and Drop example 1 (Move)

Dragging to the first box “moves” the label

Drag and Drop example 2 (Clone)
Drag and Drop example 2 (Clone)

Dragging the label to the second box create a copy of it using dojo.clone(node)

Conclusion

This is merely a prototype but demonstrates nicely the new and exiting capabilities of HTML5 without having the need for a dojo or jQuery library to do the drag/drop for you

Demonstration (again)

Here is a link to the working demo of HTML5 drag and drop in an XPage

Don’t believe the HTML – timing is everything in XPages CSJS

So having made v2.0 of my TypeAhead control I am rapidly moving towards the next iteration making it easier to implement and not have to add functions to the fields in the designer. This becomes especially arduous if you have multiple TypeAheads in the same form and you want to add this capability to all of them.

The plan is to use a jQuery or dojo selector to get a handle on all the TypeAhead fields on the form and add the necessary function calls to each of them in one simple script library. (Because this is currently a capability without jQuery I am sticking with dojo, more verbose as it is)

So I created multiple TypeAhead fields (Copy/Paste) on the same XPage and looked at HTML to find out the selector I would need to create. I right click on the web page and view source and the out of the box HTML looks like this (pretty simple right..?):

<span
	id="view:_id1:_id2:_id30:_id43"
	dojoType="ibm.xsp.widget.layout.data.TypeAheadReadStore"
	jsId="view__id1__id2__id30__id43" mode="full">
</span>
<input type="text"
	id="view:_id1:_id2:_id30:inputText1"
	name="view:_id1:_id2:_id30:inputText1"
	class="xspInputFieldEditBox"
	dojoType="ibm.xsp.widget.layout.TypeAhead"
	store="view__id1__id2__id30__id43">
<br>
<span
	id="view:_id1:_id2:_id30:_id48"
	dojoType="ibm.xsp.widget.layout.data.TypeAheadReadStore"
	jsId="view__id1__id2__id30__id48" mode="full">
</span>
<input type="text"
	id="view:_id1:_id2:_id30:inputText2"
	name="view:_id1:_id2:_id30:inputText2"
	class="xspInputFieldEditBox"
	dojoType="ibm.xsp.widget.layout.TypeAhead"
	store="view__id1__id2__id30__id48">

So foolishly I thought – we need a simple attribute selector which will select attribute dojoType is like TypeAhead.

(I always start with changing the CSS as an easy indicator that I have a handle on the element)

	dojo.query('input[dojoType$=TypeAhead]').forEach(function(node){
   		dojo.style(node, {"border" : "2px solid red"})
 	 });

The Problem

I get a big fat nothing..

The most boring picture in blog history
Probably the most boring picture in blog history

So then I pulled up firebug to make sure I wasn’t being stupid, and sure enough I was…..it is not like I have already written about this before or anything….In firebug the actual DOM looks like this:

Right Click on the field and view in firebug
Right Click on the field and Inspect Element with firebug

 

Looking at the DOM within Firebug reveals Marky's stupidity
Looking at the DOM within Firebug reveals Marky's stupidity

Oh DUH – it is a dojo widget (remember) and once the page is loaded, dojo does some major DOM manipulation to create the functionality. This is actually a really nice demonstration of how XPages and dojo work in tandem. XPages creates some fairly innocuous HTML and dojo tranforms it into considerably more complex and voluminous HTML.

So looking at the DOM we have a problem because the final field which is created (that I want to get a handle on) does not have anything indicating that it is a TypeAhead and how can I “select” this out without adding client side events in the XPage….

The Answer

The trick is to execute or “selector” before the dojo widget takes over and messes up the DOM. Instead of adding the code to the onClientLoad event (which is also when the dojo widget magic is triggered) we need to add it to a script block inside of the HTML – before the page has finished loading.

This is a subtle yet important timing detail during the rendering of HTML pages. You can add a script tag to an HTML page and have it execute before the page is rendered to the user, but it can only take action on what has already been “loaded”…this is also why dojo and jQuery are usually triggered when the HTML document is finally loaded – to make sure all the necessary fields are “loaded” on the page.

In this case we are going to add the script block right at the end of the XPage to make sure that everything we are looking for is “loaded” before we act on it. The script block is added at the bottom of the XPage after all the fields. This will execute before the onClientLoad event.

Adding an in-line script block at the end of the XPage

NOTE

I am being very specific in the selector to only select INPUT (input) with Attribute dojoType ([dojoType$]) which ends in TypeAhead – see here for more information on dojo selectors

And looking at the Sourcecode you can see the script is the last thing on the page before closing </the xp:view>.

	<xp:scriptBlock id="scriptBlock1">
		<xp:this.value>
		<![CDATA[
			dojo.query('input[dojoType$=TypeAhead]').forEach(function(node, index, arr){
   				dojo.style(node, {"border" : "2px solid red"})
 			 });
		]]>
		</xp:this.value>
	</xp:scriptBlock>
	</xp:view>

This time we get a much more satisfactory result:

Selecting the elements before they are manipulated by dojo
Selecting the elements before they are manipulated by dojo

 

But wait – there’s more to this that meets the eye….

What is also interesting to note is that the styling applied to the INPUT field before the dojo widget has it’s way with the HTML is retained….but it is NOT applied to the INPUT anymore..not even close…..

Don't trust the HTML

 

Because of this, I am not sure at this point if I am going to be able to add the timing handlers for the TypeAhead – it will be fun finding out though, watch this space….

 

jQuery in XPages #2 – Labelify.js

This week’s article is about the visually effective jQuery plugin – labelify.js

Labelify.js

In the simplest terms we want to make our form look like the “label” is inside the field – here’s an example I am sure many of you are familiar with. The general concept is that instead of having the label adjacent to the field, the “Compose new Tweet” is inside the field itself and disappears once you click in the field.


Edit box with a "in-line" label

The demonstration

The demonstration can be found here – (demonstration)

The download

The sample jQuery in Xpages database (containing examples from all the articles) can be downloaded here – (download sample database)

How do we add Labelify to our XPages?

This effect works on an XPage where the labels and fields are generated by dragging and dropping the fields from a data source. How this works will be broken down later..

Adding fields to the XPages from a pre-defined data source
Adding fields to the XPages from a pre-defined data source

Here’s the steps:

  1. Add the xLabelify.js  script library to you database
  2. Add the xLabelify.js Javascript library to your XPage as a Resource

    Adding the xLabelify.js Resource to your XPage
    Adding the xLabelify.js Resource to your XPage
  3. Add the xLabel.css  to your database
  4. Add the xLabel.css as a resource to your XPage as a Resource
  5. Add the following code to the Client side JavaScript portion of the onClientLoad event of your XPage
$("input").labelify({ text: "label", labelledClass: "labelHighlight"  });
Adding the xLabelify code to the onClientLoad XPage event
Adding the xLabelify code to the onClientLoad XPage event

And that gives us the desired outcome:

Labelify your XPage
Labelify your XPage

Breaking it down

Click here to view the How does it work article

Thanks

Thanks to David Leedy once again for hosting the demonstration

jQuery in XPages #2 – Labelify.js – How does it work?

This article is in support of the jQuery in XPages article #2 – Labelify.js and goes into depth as to how the functionality was created and how you can modify it yourself. How does this work?The Labelify example is made up of the following elements:

  • XPages
    • xLabelify (the example XPage)
  • StyleSheet
    • xLabel.css (look and feel)
  • JavaScript Library
    • xLabelify.js (the jQuery library creating the effect)

This demonstration re-uses code which was already created for the jQuery in XPages #1- Highcharts article:

  • Form (data container)
    • Fruit

The xLabelify.js Javascript Library

The xLabelify.js library is based on the original labelify.js created by Stuart Langridge. I have made a couple of modifications to the library to make it work in our XPages environment. Here is the breakdown of how it works……..

Extending jQuery

For more information on extending jQuery check out the (website). But in a nutshell, jQuery was envisioned to be extended so that anyone could use the basic jQuery selector to create a collection of objects in the DOM and then process them however they wanted.


$("input").labelify({ text: "label", labelledClass: "labelHighlight"});

In this case “labelify” is the extension and it is:

  • collecting all the $(“input”) elements on the web page and then
  •  “.labelify” them with the text and labelledClass as parameters.”

(If we wanted to be more specific and wanted to select only the labels within a certain panel (rather than the whole page) or if we wanted to select individual elements by name/id we could do that too). The example below (using x$) selects just the fruit4 field.

x$("#{id:fruit4}").labelify({
	text: "label", labelledClass: "labelField"
})

The code

I have annotated the code so that you can understand what makes this effect work. It is also a nice short look inside a jQuery extension. It is really quite elegant in its simplicity.

//extend jQuery with the function name "labelify" and it will receive the array called "settings"
jQuery.fn.labelify = function(settings) {

//"settings" will contain the variable title and labeledClass which will be created as jQuery objects
//by default the text: value will be title (if nothing is passed in at all)
  settings = jQuery.extend({
    text: "title",
    labelledClass: ""
  }, settings);

//lookups will be the default values pulled from the document model (DOM) at startup
  var lookups = {
//The title: value will be taken from the title attribute of the input field being processed
    title: function(input) {
      return $(input).attr("title");
    },
//The label: value will be taken from the label with a "for" attribute matching the id of the input field being processed
    label: function(input) {
      return $('label[for="' + input.id + '"]').text();
    }
  };
  var lookup;
//$(this) refers to "this jQuery object" as opposed to "this" which in javascript is the current DOM element.
  var jQuery_labellified_elements = $(this);

	//for each labelified element ($(this).each)
	//we are setting the lookup variable for each of the elements which are within "lookups"
	//the value of lookup is going to be the text we are going to display within the field
	//that has come from either the LABEL or the title attribute
  return $(this).each(function() {
    if (typeof settings.text === "string") {
      lookup = lookups[settings.text]; // what if not there?
    } else {
      lookup = settings.text; // what if not a fn?
    };
    // bail if lookup isn't a function or if it returns undefined
    if (typeof lookup !== "function") {
      return;
    }
    var lookupval = lookup(this);
    if (!lookupval) {
      return;
    }

    // need to strip newlines because the browser strips them
    // if you set textbox.value to a string containing them
    $(this).data("label", lookup(this).replace(/\n/g, ''));

	//When the user clicks or tabs into the field (focus event)

    $(this).focus(function() {

	//if the jQuery data (more on this further down) "label" is exactly the same type and value (===)
	//Then the jQuery item (this).value equals the jQuery item defaultValue
	//then remove the labelledClass

	//in simple terms - if the user clicks into the field and the "labellify" text (e.g. enter a value) is displayed
	//Then remove it from the field, hide it and put the defaultValue into the field (normally blank)
      if (this.value === $(this).data("label")) {
        this.value = this.defaultValue;
        $(this).removeClass(settings.labelledClass);
      }

	//When the user clicks or tabs out of the field (blur event)
	//IF the current value = the defaultValue (usually blank)
	//Then put the labelified value (e.g. enter a name) back into the field
	//Add the labelledClass (make it gray)
	  }).blur(function() {
      if (this.value === this.defaultValue) {
        this.value = $(this).data("label");
        $(this).addClass(settings.labelledClass);
      }
    });

	//This function removes all the labelify information from the field
	//This function is called onSumit and means that if the deveoper validates for ""
	//the field will contain "" onSubmit and will therefore not be validated as (enter a name)
    var removeValuesOnExit = function() {
      jQuery_labellified_elements.each(function() {
        if (this.value === $(this).data("label")) {
          this.value = this.defaultValue;
          $(this).removeClass(settings.labelledClass);
        }
      })
    };

	//if the form is being submitted or the user has clicked onto another window (unload)
	//then call the remove labelify function above and remove all traces of labelify from the field (jQuery $(this))
    $(this).parents("form").submit(removeValuesOnExit);
    $(window).unload(removeValuesOnExit);

    if (this.value !== this.defaultValue) {
      // user already started typing; don't overwrite their work!
      return;
    }

    //MDR Mar 2012
    //else clause added to resolve existing default values
	//The function sets up the labelified field and says if the field is blank to start with insert the labelified information
    if (this.defaultValue == "") {
      // actually set the value
      this.value = $(this).data("label");
      $(this).addClass(settings.labelledClass);
    } else {

	//however in our XPages environment we often have default values in the field
	//we might want to see the labelified version if the user blanks out the field
	//but without this else clause the labelified value would be forced ontop of the default value

	//so if the field is not blank then
	//get the field value ("Cabbage" in our example")
	var sTemp = this.value
	//set the default value to blank (the code assumes Cabbage is the defaultValue)
      this.defaultValue = ""
	  //create the data label within the jQuery object to be the labelify text (Enter a Vegetable)
      $(this).data("label", lookup(this).replace(/\n/g, ''));
	  //put Cabbage back into the field
      this.value = sTemp
    }
  });
};

jQuery object data

For more indepth information on jQuery.data check out the jQuery (site). But one of the constructs within the jQuery object is the .data capability. What jQuery does is it assigns data attributes to the DOM element and it keeps track of them with internal jQuery pointers. What this allows us to do programmatically is push and pull “data” from the jQuery object $(this) without having to define more DOM elements to contains the data. Creating DOM elements is an expensive transaction and pushing/pulling data from existing DOM elements is much more efficient. Although less of a transaction bonus, but still more efficient is that fact that we do not have to create new variables for each value either. This is not exactly what happens but you can imagine it conceptually – e.g. <input type=”text” value=”Marky” /> becomes <input type=”text” value=”Marky” data-label=”Enter a Vegetable” />

NOTE

Some interesting jsPerf tests have shown that in this case in some browsers jQuery is actually slower than setting attributes in the DOM manually. Still both are more efficient than creating variables in memory or new DOM elements via document.createElement.

Where does the label come from then?

When we create our XPage fields by dragging and dropping from the data source, the XPage created the following HTML automagically

</pre>
<table>
      <tbody>
            <tr>
                  <td>
                        <label id="view:_id1:fruit_Label1" class="xspTextLabel" for="view:_id1:fruit1">Fruit:</label>
                  </td>
                  <td>
                        <input id="view:_id1:fruit1" class="xspInputFieldEditBox" type="text" name="view:_id1:fruit1" />
                  </td>
            </tr>
            <tr>
                  <td>
                        <label id="view:_id1:howManyAdam_Label1" class="xspTextLabel" for="view:_id1:howManyAdam1">How many adam:</label>
                  </td>
                  <td>
                        <input id="view:_id1:howManyAdam1" class="xspInputFieldEditBox" type="text" name="view:_id1:howManyAdam1" />
                  </td>
            </tr>
            <tr>
                  <td>
                        <label id="view:_id1:howManyJane_Label1" class="xspTextLabel" for="view:_id1:howManyJane1">How many jane:</label>
                  </td>
                  <td>
                        <input id="view:_id1:howManyJane1" class="xspInputFieldEditBox" type="text" name="view:_id1:howManyJane1" />
                  </td>
            </tr>
      </tbody>
</table>

So you can see from the code above that for every

  • <INPUT id=”view:_id1:fieldname” name=”view:_id1:fieldname” class-“xspInputFieldEditBox”>  there is a corresponding
  • <label id=”view:_id1:fieldname_Label1″ for=”view:_id1:fieldname”>Some Label Text</label>

So out of the box, XPages has provided us the constructs for us to labelify the fields without write more code.

This

XPages fields from a data source
XPages fields from a data source

Becomes This

XPage Pre-labelify
XPage Pre-labelify

Becomes Labelified

Labelified XPage
Labelified XPage

To see the full demo go here – http://watchtower.notesin9.com/xomino/jQinX.nsf/xLabelify.xsp

The full demo includes more specific examples of labelifying specific fields and or sections and not others. To be able to reference specific panels the demo also includes x$ (link) which is provided as a JavaScript library in the sample database.