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(function( $ ) { | |
$.fn.readOnlySuffix = function(suffix) { | |
return this.each(function() { | |
var $this = $(this), | |
suffixLength = suffix.length, | |
oldValue = suffix, | |
mouseIsDown = false; | |
// Must be a text input or text area | |
if (!($this.is(":text") || $this.tagName.toLowerCase() == "textarea")){ | |
return; | |
} | |
$this.blur(function () { | |
if ($this.val().length == suffixLength) { | |
$this.val(''); | |
} | |
}); | |
$this.keydown(function(evt){ | |
if (mouseIsDown){ | |
// Handle issue when cursor is dragged out of input and mouseup is not fired. | |
evt.preventDefault(); | |
$this.trigger("mouseup"); | |
return; | |
} | |
// Prevent keys that will delete the suffix | |
var inputLength = this.value.length, | |
offset = inputLength - suffixLength; | |
if ((evt.keyCode == 35 || evt.keyCode == 39 || evt.keyCode == 46) // Home, Right Arrow or Delete keys | |
&& this.selectionStart >= offset) { | |
evt.preventDefault(); | |
} | |
}); | |
$this.keyup(function(evt){ | |
// Prevent Select All | |
var offset = this.value.length - suffixLength, | |
actualStart = this.selectionStart > offset ? offset : this.selectionStart, | |
actualEnd = this.selectionEnd > offset ? offset : this.selectionEnd; | |
if (this.selectionStart != actualStart || this.selectionEnd != actualEnd){ | |
this.setSelectionRange(actualStart, actualEnd); | |
} | |
}); | |
$this.mousedown(function(evt){ | |
oldValue = $this.val(); | |
if (oldValue == '') { | |
oldValue = suffix; | |
$this.val(suffix); | |
} | |
mouseIsDown = true; | |
}); | |
$this.mouseup(function(evt){ | |
var newValue = $this.val(), | |
offset = oldValue.length - suffixLength, | |
actualStart = this.selectionStart > offset ? offset : this.selectionStart, | |
actualEnd = this.selectionEnd > offset ? offset : this.selectionEnd; | |
mouseIsDown = false; | |
if (newValue != oldValue){ | |
$this.val(oldValue); | |
} | |
if (this.selectionStart != actualStart || this.selectionEnd != actualEnd){ | |
this.setSelectionRange(actualStart, actualEnd); | |
} | |
}); | |
}); | |
}; | |
})( jQuery ); |
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