Custom Angular Input Mask

Question

I do have an input field which is populated with JSON object data.

 dimension: {
   length: 10.00,
   width: 20.00,
   height: 30.00,
 }

The input looks like this:

 <input matInput [placeholder]="Dimension (LxHxW)" formControlName="dimensions" 
        name="dimensions" mask="00.0x00.0x00.0" [specialCharacters]="['x', '.']" 
        [clearIfNotMatch]="true" [showMaskTyped]="true"
  />

where dimensions is built in typescript code as:

 let dimensions = null;
    if (dimensionObject) {
      dimensions = '' + dimensionObject.length + 'x' + dimensionObject.width + 'x'
        + dimensionObject.height;
    }

The goal is to map correctly the data on the mask and obtain the length, width and height concatenated with an x in between-> obtain a flexible mask.

The problem appears when dimensions values are of different length:

e.g. if dimension is 2.3 x 12.3 x 42.2 instead of 2.3 x 12.3 x 42.2 it will show 23.1 x 23.4 x 22. ( x shifted).

Any solutions you guys can spot?

Solution 1

i guess you have to use patterns

The following example, taken from this article on CSS-tricks, by Chris Coyier but created by Estelle Weyl, shows how to handle a Canadian zip code with the A1A 1A1 form:

 <div>
   <label for="czc">Canadian Zip Code</label>
   <input id="czc" placeholder="XXX XXX" pattern="\w\d\w \d\w\d" class="masked" 
       data-charset="_X_ X_X" id="zipca" type="text" name="zipcodeca" 
       title="6-character alphanumeric zip code in the format of A1A 1A1" />
 </div>

in your case you should only change the pattern regular expression.

Solution 2

"angular2-text-mask" NPM library perfectly works for me.

https://www.npmjs.com/package/angular2-text-mask Let me know if you need any help.

Thanks.