throw new Error('Opacity not supported by the browser');
}
div.style.filter = "alpha(opacity=0)";
}
addEvent(input, 'change', function () {
if (!input || input.value === '') {
return;
}
// Get filename from input, required
// as some browsers have path instead of it
var file = fileFromPath(input.value);
if (false === self._settings.onChange.call(self, file, getExt(file))) {
self._clearInput();
return;
}
// Submit form when value is changed
if (self._settings.autoSubmit) {
self.submit();
}
});
addEvent(input, 'mouseover', function () {
addClass(self._button, self._settings.hoverClass);
});
addEvent(input, 'mouseout', function () {
removeClass(self._button, self._settings.hoverClass);
// We use visibility instead of display to fix problem with Safari 4
// The problem is that the value of input doesn't change if it
// has display none when user selects a file
input.parentNode.style.visibility = 'hidden';
});
div.appendChild(input);
document.body.appendChild(div);
this._input = input;
},
_clearInput: function () {
if (!this._input) {
return;
}
// this._input.value = ''; Doesn't work in IE6
removeNode(this._input.parentNode);
this._input = null;
this._createInput();
removeClass(this._button, this._settings.hoverClass);
},
/**
* Function makes sure that when user clicks upload button,
* the this._input is clicked instead
*/
_rerouteClicks: function () {
var self = this;
// IE will later display 'access denied' error
// if you use using self._input.click()
// other browsers just ignore click()
addEvent(self._button, 'mouseover', function () {
if (self._disabled) {
return;
}
if (!self._input) {
self._createInput();
}
var div = self._input.parentNode;
copyLayout(self._button, div);
div.style.visibility = 'visible';
});
// commented because we now hide input on mouseleave
/**
* When the window is resized the elements
* can be misaligned if button position depends
* on window size
*/
//addResizeEvent(function(){
// if (self._input){
// copyLayout(self._button, self._input.parentNode);
// }
//});
},
/**
* Creates iframe with unique name
* @return {Element} iframe
*/
_createIframe: function () {
// We can't use getTime, because it sometimes return
// same value in safari :(
var id = getUID();
// We can't use following code as the name attribute
// won't be properly registered in IE6, and new window
