angular2
Version:
Angular 2 - a web framework for modern web apps
57 lines (56 loc) • 3.86 kB
JavaScript
import * as o from '../output/output_ast';
import { DetectChangesVars, ChangeDetectorStateEnum } from './constants';
import { LifecycleHooks } from 'angular2/src/core/metadata/lifecycle_hooks';
var STATE_IS_NEVER_CHECKED = o.THIS_EXPR.prop('cdState').identical(ChangeDetectorStateEnum.NeverChecked);
var NOT_THROW_ON_CHANGES = o.not(DetectChangesVars.throwOnChange);
export function bindDirectiveDetectChangesLifecycleCallbacks(directiveAst, directiveInstance, compileElement) {
var view = compileElement.view;
var detectChangesInInputsMethod = view.detectChangesInInputsMethod;
var lifecycleHooks = directiveAst.directive.lifecycleHooks;
if (lifecycleHooks.indexOf(LifecycleHooks.OnChanges) !== -1 && directiveAst.inputs.length > 0) {
detectChangesInInputsMethod.addStmt(new o.IfStmt(DetectChangesVars.changes.notIdentical(o.NULL_EXPR), [directiveInstance.callMethod('ngOnChanges', [DetectChangesVars.changes]).toStmt()]));
}
if (lifecycleHooks.indexOf(LifecycleHooks.OnInit) !== -1) {
detectChangesInInputsMethod.addStmt(new o.IfStmt(STATE_IS_NEVER_CHECKED.and(NOT_THROW_ON_CHANGES), [directiveInstance.callMethod('ngOnInit', []).toStmt()]));
}
if (lifecycleHooks.indexOf(LifecycleHooks.DoCheck) !== -1) {
detectChangesInInputsMethod.addStmt(new o.IfStmt(NOT_THROW_ON_CHANGES, [directiveInstance.callMethod('ngDoCheck', []).toStmt()]));
}
}
export function bindDirectiveAfterContentLifecycleCallbacks(directiveMeta, directiveInstance, compileElement) {
var view = compileElement.view;
var lifecycleHooks = directiveMeta.lifecycleHooks;
var afterContentLifecycleCallbacksMethod = view.afterContentLifecycleCallbacksMethod;
afterContentLifecycleCallbacksMethod.resetDebugInfo(compileElement.nodeIndex, compileElement.sourceAst);
if (lifecycleHooks.indexOf(LifecycleHooks.AfterContentInit) !== -1) {
afterContentLifecycleCallbacksMethod.addStmt(new o.IfStmt(STATE_IS_NEVER_CHECKED, [directiveInstance.callMethod('ngAfterContentInit', []).toStmt()]));
}
if (lifecycleHooks.indexOf(LifecycleHooks.AfterContentChecked) !== -1) {
afterContentLifecycleCallbacksMethod.addStmt(directiveInstance.callMethod('ngAfterContentChecked', []).toStmt());
}
}
export function bindDirectiveAfterViewLifecycleCallbacks(directiveMeta, directiveInstance, compileElement) {
var view = compileElement.view;
var lifecycleHooks = directiveMeta.lifecycleHooks;
var afterViewLifecycleCallbacksMethod = view.afterViewLifecycleCallbacksMethod;
afterViewLifecycleCallbacksMethod.resetDebugInfo(compileElement.nodeIndex, compileElement.sourceAst);
if (lifecycleHooks.indexOf(LifecycleHooks.AfterViewInit) !== -1) {
afterViewLifecycleCallbacksMethod.addStmt(new o.IfStmt(STATE_IS_NEVER_CHECKED, [directiveInstance.callMethod('ngAfterViewInit', []).toStmt()]));
}
if (lifecycleHooks.indexOf(LifecycleHooks.AfterViewChecked) !== -1) {
afterViewLifecycleCallbacksMethod.addStmt(directiveInstance.callMethod('ngAfterViewChecked', []).toStmt());
}
}
export function bindDirectiveDestroyLifecycleCallbacks(directiveMeta, directiveInstance, compileElement) {
var onDestroyMethod = compileElement.view.destroyMethod;
onDestroyMethod.resetDebugInfo(compileElement.nodeIndex, compileElement.sourceAst);
if (directiveMeta.lifecycleHooks.indexOf(LifecycleHooks.OnDestroy) !== -1) {
onDestroyMethod.addStmt(directiveInstance.callMethod('ngOnDestroy', []).toStmt());
}
}
export function bindPipeDestroyLifecycleCallbacks(pipeMeta, pipeInstance, view) {
var onDestroyMethod = view.destroyMethod;
if (pipeMeta.lifecycleHooks.indexOf(LifecycleHooks.OnDestroy) !== -1) {
onDestroyMethod.addStmt(pipeInstance.callMethod('ngOnDestroy', []).toStmt());
}
}