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function modelAccessor(scope, element) {
var expr = element.attr('name'),
farmatterName = element.attr('ng-format') || NOOP,
formatter = angularFormatter(farmatterName);
if (!expr) throw "Required field 'name' not found.";
if (!formatter) throw "Formatter named '" + farmatterName + "' not found.";
return {
get: function() {
return formatter['format'](scope.$eval(expr));
},
set: function(value) {
scope.$eval(expr + '=' + toJson(formatter['parse'](value)));
}
};
}
function compileValidator(expr) {
return new Parser(expr).validator()();
}
function valueAccessor(element) {
var validatorName = element.attr('ng-validate') || NOOP,
validator = compileValidator(validatorName),
required = element.attr('ng-required'),
lastError;
required = required || required == '';
if (!validator) throw "Validator named '" + validatorName + "' not found.";
function validate(value) {
var error = required && !trim(value) ? "Required" : validator.call(this, value);
if (error !== lastError) {
if (error) {
element.addClass(NG_VALIDATION_ERROR);
element.attr(NG_ERROR, error);
} else {
element.removeClass(NG_VALIDATION_ERROR);
element.removeAttr(NG_ERROR);
}
lastError = error;
}
return value;
}
return {
get: function(){ return validate(element.val()); },
set: function(value){ element.val(validate(value)); }
};
}
function checkedAccessor(element) {
var domElement = element[0];
return {
get: function(){ return !!domElement.checked; },
set: function(value){ domElement.checked = !!value; }
};
}
function radioAccessor(element) {
var domElement = element[0];
return {
get: function(){ return domElement.checked ? domElement.value : null; },
set: function(value){ domElement.checked = value == domElement.value; }
};
}
function optionsAccessor(element) {
var options = element[0].options;
return {
get: function(){
var values = [];
foreach(options, function(option){
if (option.selected) values.push(option.value);
});
return values;
},
set: function(values){
var keys = {};
foreach(values, function(value){ keys[value] = true; });
foreach(options, function(option){
option.selected = keys[option.value];
});
}
};
}
function noopAccessor() { return { get: noop, set: noop }; }
var NG_ERROR = 'ng-error',
NG_VALIDATION_ERROR = 'ng-validation-error',
textWidget = inputWidget('keyup change', modelAccessor, valueAccessor, ''),
buttonWidget = inputWidget('click', noopAccessor, noopAccessor, undefined),
INPUT_TYPE = {
'text': textWidget,
'textarea': textWidget,
'hidden': textWidget,
'password': textWidget,
'button': buttonWidget,
'submit': buttonWidget,
'reset': buttonWidget,
'image': buttonWidget,
'checkbox': inputWidget('click', modelAccessor, checkedAccessor, false),
'radio': inputWidget('click', modelAccessor, radioAccessor, undefined),
'select-one': inputWidget('click', modelAccessor, valueAccessor, null),
'select-multiple': inputWidget('click', modelAccessor, optionsAccessor, [])
// 'file': fileWidget???
};
function inputWidget(events, modelAccessor, viewAccessor, initValue) {
return function(element) {
var scope = this,
model = modelAccessor(scope, element),
view = viewAccessor(element),
action = element.attr('ng-action') || '',
value = view.get() || copy(initValue);
if (isDefined(value)) model.set(value);
this.$eval(element.attr('ng-init')||'');
element.bind(events, function(){
model.set(view.get());
scope.$tryEval(action, element);
scope.$root.$eval();
// if we have no initValue than we are just a button,
// therefore we want to prevent default action
return isDefined(initValue);
});
scope.$watch(model.get, view.set);
};
}
function inputWidgetSelector(element){
return INPUT_TYPE[lowercase(element[0].type)] || noop;
}
angularWidget('INPUT', inputWidgetSelector);
angularWidget('TEXTAREA', inputWidgetSelector);
angularWidget('BUTTON', inputWidgetSelector);
angularWidget('SELECT', function(element){
this.descend(true);
return inputWidgetSelector.call(this, element);
});
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