Created
May 22, 2012 02:14
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Add a suffix to an text input, which cannot be overwritten.
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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.val(suffix); | |
| $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(); | |
| 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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What's the license on this? This looks great.