angular2
Version:
Angular 2 - a web framework for modern web apps
93 lines • 16.5 kB
JavaScript
import { ListWrapper, StringMapWrapper } from 'angular2/src/facade/collection';
import { isBlank, isPresent, looseIdentical, hasConstructor } from 'angular2/src/facade/lang';
import { BaseException } from 'angular2/src/facade/exceptions';
import { Validators } from '../validators';
import { DefaultValueAccessor } from './default_value_accessor';
import { NumberValueAccessor } from './number_value_accessor';
import { CheckboxControlValueAccessor } from './checkbox_value_accessor';
import { SelectControlValueAccessor } from './select_control_value_accessor';
import { RadioControlValueAccessor } from './radio_control_value_accessor';
import { normalizeValidator } from './normalize_validator';
export function controlPath(name, parent) {
var p = ListWrapper.clone(parent.path);
p.push(name);
return p;
}
export function setUpControl(control, dir) {
if (isBlank(control))
_throwError(dir, "Cannot find control");
if (isBlank(dir.valueAccessor))
_throwError(dir, "No value accessor for");
control.validator = Validators.compose([control.validator, dir.validator]);
control.asyncValidator = Validators.composeAsync([control.asyncValidator, dir.asyncValidator]);
dir.valueAccessor.writeValue(control.value);
// view -> model
dir.valueAccessor.registerOnChange((newValue) => {
dir.viewToModelUpdate(newValue);
control.updateValue(newValue, { emitModelToViewChange: false });
control.markAsDirty();
});
// model -> view
control.registerOnChange((newValue) => dir.valueAccessor.writeValue(newValue));
// touched
dir.valueAccessor.registerOnTouched(() => control.markAsTouched());
}
export function setUpControlGroup(control, dir) {
if (isBlank(control))
_throwError(dir, "Cannot find control");
control.validator = Validators.compose([control.validator, dir.validator]);
control.asyncValidator = Validators.composeAsync([control.asyncValidator, dir.asyncValidator]);
}
function _throwError(dir, message) {
var path = dir.path.join(" -> ");
throw new BaseException(`${message} '${path}'`);
}
export function composeValidators(validators) {
return isPresent(validators) ? Validators.compose(validators.map(normalizeValidator)) : null;
}
export function composeAsyncValidators(validators) {
return isPresent(validators) ? Validators.composeAsync(validators.map(normalizeValidator)) : null;
}
export function isPropertyUpdated(changes, viewModel) {
if (!StringMapWrapper.contains(changes, "model"))
return false;
var change = changes["model"];
if (change.isFirstChange())
return true;
return !looseIdentical(viewModel, change.currentValue);
}
// TODO: vsavkin remove it once https://github.com/angular/angular/issues/3011 is implemented
export function selectValueAccessor(dir, valueAccessors) {
if (isBlank(valueAccessors))
return null;
var defaultAccessor;
var builtinAccessor;
var customAccessor;
valueAccessors.forEach((v) => {
if (hasConstructor(v, DefaultValueAccessor)) {
defaultAccessor = v;
}
else if (hasConstructor(v, CheckboxControlValueAccessor) ||
hasConstructor(v, NumberValueAccessor) ||
hasConstructor(v, SelectControlValueAccessor) ||
hasConstructor(v, RadioControlValueAccessor)) {
if (isPresent(builtinAccessor))
_throwError(dir, "More than one built-in value accessor matches");
builtinAccessor = v;
}
else {
if (isPresent(customAccessor))
_throwError(dir, "More than one custom value accessor matches");
customAccessor = v;
}
});
if (isPresent(customAccessor))
return customAccessor;
if (isPresent(builtinAccessor))
return builtinAccessor;
if (isPresent(defaultAccessor))
return defaultAccessor;
_throwError(dir, "No valid value accessor for");
return null;
}
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{ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';\nimport {isBlank, isPresent, looseIdentical, hasConstructor} from 'angular2/src/facade/lang';\nimport {BaseException, WrappedException} from 'angular2/src/facade/exceptions';\n\nimport {ControlContainer} from './control_container';\nimport {NgControl} from './ng_control';\nimport {AbstractControlDirective} from './abstract_control_directive';\nimport {NgControlGroup} from './ng_control_group';\nimport {Control, ControlGroup} from '../model';\nimport {Validators} from '../validators';\nimport {ControlValueAccessor} from './control_value_accessor';\nimport {DefaultValueAccessor} from './default_value_accessor';\nimport {NumberValueAccessor} from './number_value_accessor';\nimport {CheckboxControlValueAccessor} from './checkbox_value_accessor';\nimport {SelectControlValueAccessor} from './select_control_value_accessor';\nimport {RadioControlValueAccessor} from './radio_control_value_accessor';\nimport {normalizeValidator} from './normalize_validator';\n\n\nexport function controlPath(name: string, parent: ControlContainer): string[] {\n  var p = ListWrapper.clone(parent.path);\n  p.push(name);\n  return p;\n}\n\nexport function setUpControl(control: Control, dir: NgControl): void {\n  if (isBlank(control)) _throwError(dir, \"Cannot find control\");\n  if (isBlank(dir.valueAccessor)) _throwError(dir, \"No value accessor for\");\n\n  control.validator = Validators.compose([control.validator, dir.validator]);\n  control.asyncValidator = Validators.composeAsync([control.asyncValidator, dir.asyncValidator]);\n  dir.valueAccessor.writeValue(control.value);\n\n  // view -> model\n  dir.valueAccessor.registerOnChange((newValue: any) => {\n    dir.viewToModelUpdate(newValue);\n    control.updateValue(newValue, {emitModelToViewChange: false});\n    control.markAsDirty();\n  });\n\n  // model -> view\n  control.registerOnChange((newValue: any) => dir.valueAccessor.writeValue(newValue));\n\n  // touched\n  dir.valueAccessor.registerOnTouched(() => control.markAsTouched());\n}\n\nexport function setUpControlGroup(control: ControlGroup, dir: NgControlGroup) {\n  if (isBlank(control)) _throwError(dir, \"Cannot find control\");\n  control.validator = Validators.compose([control.validator, dir.validator]);\n  control.asyncValidator = Validators.composeAsync([control.asyncValidator, dir.asyncValidator]);\n}\n\nfunction _throwError(dir: AbstractControlDirective, message: string): void {\n  var path = dir.path.join(\" -> \");\n  throw new BaseException(`${message} '${path}'`);\n}\n\nexport function composeValidators(validators: /* Array<Validator|Function> */ any[]): Function {\n  return isPresent(validators) ? Validators.compose(validators.map(normalizeValidator)) : null;\n}\n\nexport function composeAsyncValidators(\n    validators: /* Array<Validator|Function> */ any[]): Function {\n  return isPresent(validators) ? Validators.composeAsync(validators.map(normalizeValidator)) : null;\n}\n\nexport function isPropertyUpdated(changes: {[key: string]: any}, viewModel: any): boolean {\n  if (!StringMapWrapper.contains(changes, \"model\")) return false;\n  var change = changes[\"model\"];\n\n  if (change.isFirstChange()) return true;\n  return !looseIdentical(viewModel, change.currentValue);\n}\n\n// TODO: vsavkin remove it once https://github.com/angular/angular/issues/3011 is implemented\nexport function selectValueAccessor(dir: NgControl,\n                                    valueAccessors: ControlValueAccessor[]): ControlValueAccessor {\n  if (isBlank(valueAccessors)) return null;\n\n  var defaultAccessor: ControlValueAccessor;\n  var builtinAccessor: ControlValueAccessor;\n  var customAccessor: ControlValueAccessor;\n  valueAccessors.forEach((v: ControlValueAccessor) => {\n    if (hasConstructor(v, DefaultValueAccessor)) {\n      defaultAccessor = v;\n\n    } else if (hasConstructor(v, CheckboxControlValueAccessor) ||\n               hasConstructor(v, NumberValueAccessor) ||\n               hasConstructor(v, SelectControlValueAccessor) ||\n               hasConstructor(v, RadioControlValueAccessor)) {\n      if (isPresent(builtinAccessor))\n        _throwError(dir, \"More than one built-in value accessor matches\");\n      builtinAccessor = v;\n\n    } else {\n      if (isPresent(customAccessor))\n        _throwError(dir, \"More than one custom value accessor matches\");\n      customAccessor = v;\n    }\n  });\n\n  if (isPresent(customAccessor)) return customAccessor;\n  if (isPresent(builtinAccessor)) return builtinAccessor;\n  if (isPresent(defaultAccessor)) return defaultAccessor;\n\n  _throwError(dir, \"No valid value accessor for\");\n  return null;\n}\n"]}