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fix(ivy): host bindings should support array/object literals (#25583) 

PR Close #25583
This commit is contained in:
Kara Erickson 2018-08-20 13:03:03 -07:00 committed by Jason Aden
parent fc89479044
commit 831e71ea3c
11 changed files with 446 additions and 77 deletions
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1
packages/core/src/render3/component.ts
View File

@ -112,7 +112,6 @@ export function renderComponent<T>(
rootView[INJECTOR] = opts.injector || null;
const oldView = enterView(rootView, null !);
rootView[BINDING_INDEX] = rootView[TVIEW].bindingStartIndex;
let elementNode: LElementNode;
let component: T;
try {

1
packages/core/src/render3/component_ref.ts
View File

@ -127,7 +127,6 @@ export class ComponentFactory<T> extends viewEngine_ComponentFactory<T> {
// rootView is the parent when bootstrapping
const oldView = enterView(rootView, null !);
rootView[BINDING_INDEX] = rootView[TVIEW].bindingStartIndex;
let component: T;
let elementNode: LElementNode;

21
packages/core/src/render3/definition.ts
View File

@ -56,7 +56,7 @@ export function defineComponent<T>(componentDefinition: {
/**
* The number of nodes, local refs, and pipes in this component template.
*
* Used to calculate the length of the component's LViewData array, so we
* Used to calculate the length of this component's LViewData array, so we
* can pre-fill the array and set the binding start index.
*/
// TODO(kara): remove queries from this count
@ -65,11 +65,19 @@ export function defineComponent<T>(componentDefinition: {
/**
* The number of bindings in this component template (including pure fn bindings).
*
* Used to calculate the length of the component's LViewData array, so we
* Used to calculate the length of this component's LViewData array, so we
* can pre-fill the array and set the host binding start index.
*/
vars: number;
/**
* The number of host bindings (including pure fn bindings) in this component.
*
* Used to calculate the length of the LViewData array for the *parent* component
* of this component.
*/
hostVars?: number;
/**
* Static attributes to set on host element.
*
@ -264,6 +272,7 @@ export function defineComponent<T>(componentDefinition: {
diPublic: null,
consts: componentDefinition.consts,
vars: componentDefinition.vars,
hostVars: componentDefinition.hostVars || 0,
factory: componentDefinition.factory,
template: componentDefinition.template || null !,
hostBindings: componentDefinition.hostBindings || null,
@ -577,6 +586,14 @@ export const defineDirective = defineComponent as any as<T>(directiveDefinition:
*/
features?: DirectiveDefFeature[];
/**
* The number of host bindings (including pure fn bindings) in this directive.
*
* Used to calculate the length of the LViewData array for the *parent* component
* of this directive.
*/
hostVars?: number;
/**
* Function executed by the parent template to allow child directive to apply host bindings.
*/

28
packages/core/src/render3/instructions.ts
View File

@ -239,6 +239,18 @@ let checkNoChangesMode = false;
/** Whether or not this is the first time the current view has been processed. */
let firstTemplatePass = true;
/**
* The root index from which pure function instructions should calculate their binding
* indices. In component views, this is TView.bindingStartIndex. In a host binding
* context, this is the TView.hostBindingStartIndex + any hostVars before the given dir.
*/
let bindingRootIndex: number = -1;
// top level variables should not be exported for performance reasons (PERF_NOTES.md)
export function getBindingRoot() {
return bindingRootIndex;
}
const enum BindingDirection {
Input,
Output,
@ -263,7 +275,7 @@ export function enterView(newView: LViewData, host: LElementNode | LViewNode | n
creationMode = newView && (newView[FLAGS] & LViewFlags.CreationMode) === LViewFlags.CreationMode;
firstTemplatePass = newView && tView.firstTemplatePass;
bindingRootIndex = newView && tView.bindingStartIndex;
renderer = newView && newView[RENDERER];
if (host != null) {
@ -295,7 +307,7 @@ export function leaveView(newView: LViewData, creationOnly?: boolean): void {
viewData[FLAGS] &= ~(LViewFlags.CreationMode | LViewFlags.Dirty);
}
viewData[FLAGS] |= LViewFlags.RunInit;
viewData[BINDING_INDEX] = -1;
viewData[BINDING_INDEX] = tView.bindingStartIndex;
enterView(newView, null);
}
@ -329,11 +341,13 @@ function refreshDescendantViews() {
/** Sets the host bindings for the current view. */
export function setHostBindings(bindings: number[] | null): void {
if (bindings != null) {
bindingRootIndex = viewData[BINDING_INDEX] = tView.hostBindingStartIndex;
const defs = tView.directives !;
for (let i = 0; i < bindings.length; i += 2) {
const dirIndex = bindings[i];
const def = defs[dirIndex] as DirectiveDefInternal<any>;
def.hostBindings && def.hostBindings(dirIndex, bindings[i + 1]);
bindingRootIndex = viewData[BINDING_INDEX] = bindingRootIndex + def.hostVars;
}
}
}
@ -377,7 +391,7 @@ export function createLViewData<T>(
null, // queries
flags | LViewFlags.CreationMode | LViewFlags.Attached | LViewFlags.RunInit, // flags
null !, // hostNode
-1, // bindingIndex
tView.bindingStartIndex, // bindingIndex
null, // directives
null, // cleanupInstances
context, // context
@ -600,7 +614,6 @@ export function renderEmbeddedTemplate<T>(
oldView = enterView(viewNode.data !, viewNode);
namespaceHTML();
viewData[BINDING_INDEX] = tView.bindingStartIndex;
tView.template !(rf, context);
if (rf & RenderFlags.Update) {
refreshDescendantViews();
@ -644,7 +657,6 @@ export function renderComponentOrTemplate<T>(
}
if (templateFn) {
namespaceHTML();
viewData[BINDING_INDEX] = tView.bindingStartIndex;
templateFn(getRenderFlags(hostView), componentOrContext !);
refreshDescendantViews();
} else {
@ -1042,6 +1054,7 @@ export function createTView(
directives: DirectiveDefListOrFactory | null, pipes: PipeDefListOrFactory | null,
viewQuery: ComponentQuery<any>| null): TView {
ngDevMode && ngDevMode.tView++;
const bindingStartIndex = HEADER_OFFSET + consts;
return {
id: viewIndex,
template: templateFn,
@ -1049,7 +1062,8 @@ export function createTView(
node: null !,
data: HEADER_FILLER.slice(), // Fill in to match HEADER_OFFSET in LViewData
childIndex: -1, // Children set in addToViewTree(), if any
bindingStartIndex: HEADER_OFFSET + consts,
bindingStartIndex: bindingStartIndex,
hostBindingStartIndex: bindingStartIndex + vars,
directives: null,
firstTemplatePass: true,
initHooks: null,
@ -2062,7 +2076,6 @@ export function embeddedViewStart(viewBlockId: number, consts: number, vars: num
}
lContainer[ACTIVE_INDEX] !++;
}
viewData[BINDING_INDEX] = tView.bindingStartIndex;
return getRenderFlags(viewNode.data);
}
@ -2467,7 +2480,6 @@ export function detectChangesInternal<T>(
const hostTView = hostView[TVIEW];
const templateFn = hostTView.template !;
const viewQuery = hostTView.viewQuery;
viewData[BINDING_INDEX] = tView.bindingStartIndex;
try {
namespaceHTML();

8
packages/core/src/render3/interfaces/definition.ts
View File

@ -141,6 +141,14 @@ export interface DirectiveDef<T, Selector extends string> extends BaseDef<T> {
/** Refreshes content queries associated with directives in a given view */
contentQueriesRefresh: ((directiveIndex: number, queryIndex: number) => void)|null;
/**
* The number of host bindings (including pure fn bindings) in this directive/component.
*
* Used to calculate the length of the LViewData array for the *parent* component
* of this directive/component.
*/
hostVars: number;
/** Refreshes host bindings on the associated directive. */
hostBindings: ((directiveIndex: number, elementIndex: number) => void)|null;

7
packages/core/src/render3/interfaces/view.ts
View File

@ -289,6 +289,13 @@ export interface TView {
*/
bindingStartIndex: number;
/**
* The index at which the data array begins to store host bindings for components
* or directives in its template. Saving this value ensures that we can set the
* binding root and binding index correctly before checking host bindings.
*/
hostBindingStartIndex: number;
/**
* Index of the host node of the first LView or LContainer beneath this LView in
* the hierarchy.

40
packages/core/src/render3/pure_function.ts
View File

@ -6,20 +6,22 @@
* found in the LICENSE file at https://angular.io/license
*/
import {bindingUpdated, bindingUpdated2, bindingUpdated4, updateBinding, getBinding, getCreationMode, getTView, bindingUpdated3,} from './instructions';
import {bindingUpdated, bindingUpdated2, bindingUpdated4, updateBinding, getBinding, getCreationMode, bindingUpdated3, getBindingRoot, getTView,} from './instructions';
/**
* Bindings for pure functions are stored after regular bindings.
*
* ----------------------------------------------------------------------------
* | LNodes / local refs / pipes ... | regular bindings / interpolations | pure function bindings
* ----------------------------------------------------------------------------
* ^
* TView.bindingStartIndex
* |--------consts--------|----------------vars----------------|------ hostVars (dir1) ------|
* ---------------------------------------------------------------------------------------------
* | nodes / refs / pipes | bindings | pure function bindings | host bindings | host slots |
* ---------------------------------------------------------------------------------------------
* ^ ^
* TView.bindingStartIndex TView.hostBindingStartIndex
*
* Pure function instructions are given an offset from TView.bindingStartIndex.
* Adding the offset to TView.bindingStartIndex gives the first index where the bindings
* are stored.
* Pure function instructions are given an offset from the binding root. Adding the offset to the
* binding root gives the first index where the bindings are stored. In component views, the binding
* root is the bindingStartIndex. In host bindings, the binding root is the hostBindingStartIndex +
* any hostVars in directives evaluated before it.
*/
/**
@ -33,7 +35,7 @@ import {bindingUpdated, bindingUpdated2, bindingUpdated4, updateBinding, getBind
*/
export function pureFunction0<T>(slotOffset: number, pureFn: () => T, thisArg?: any): T {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
return getCreationMode() ?
updateBinding(bindingIndex, thisArg ? pureFn.call(thisArg) : pureFn()) :
getBinding(bindingIndex);
@ -52,7 +54,7 @@ export function pureFunction0<T>(slotOffset: number, pureFn: () => T, thisArg?:
export function pureFunction1(
slotOffset: number, pureFn: (v: any) => any, exp: any, thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
return bindingUpdated(bindingIndex, exp) ?
updateBinding(bindingIndex + 1, thisArg ? pureFn.call(thisArg, exp) : pureFn(exp)) :
getBinding(bindingIndex + 1);
@ -73,7 +75,7 @@ export function pureFunction2(
slotOffset: number, pureFn: (v1: any, v2: any) => any, exp1: any, exp2: any,
thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
return bindingUpdated2(bindingIndex, exp1, exp2) ?
updateBinding(
bindingIndex + 2, thisArg ? pureFn.call(thisArg, exp1, exp2) : pureFn(exp1, exp2)) :
@ -96,7 +98,7 @@ export function pureFunction3(
slotOffset: number, pureFn: (v1: any, v2: any, v3: any) => any, exp1: any, exp2: any, exp3: any,
thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
return bindingUpdated3(bindingIndex, exp1, exp2, exp3) ?
updateBinding(
bindingIndex + 3,
@ -121,7 +123,7 @@ export function pureFunction4(
slotOffset: number, pureFn: (v1: any, v2: any, v3: any, v4: any) => any, exp1: any, exp2: any,
exp3: any, exp4: any, thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
return bindingUpdated4(bindingIndex, exp1, exp2, exp3, exp4) ?
updateBinding(
bindingIndex + 4,
@ -147,7 +149,7 @@ export function pureFunction5(
slotOffset: number, pureFn: (v1: any, v2: any, v3: any, v4: any, v5: any) => any, exp1: any,
exp2: any, exp3: any, exp4: any, exp5: any, thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
const different = bindingUpdated4(bindingIndex, exp1, exp2, exp3, exp4);
return bindingUpdated(bindingIndex + 4, exp5) || different ?
updateBinding(
@ -175,7 +177,7 @@ export function pureFunction6(
slotOffset: number, pureFn: (v1: any, v2: any, v3: any, v4: any, v5: any, v6: any) => any,
exp1: any, exp2: any, exp3: any, exp4: any, exp5: any, exp6: any, thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
const different = bindingUpdated4(bindingIndex, exp1, exp2, exp3, exp4);
return bindingUpdated2(bindingIndex + 4, exp5, exp6) || different ?
updateBinding(
@ -205,7 +207,7 @@ export function pureFunction7(
pureFn: (v1: any, v2: any, v3: any, v4: any, v5: any, v6: any, v7: any) => any, exp1: any,
exp2: any, exp3: any, exp4: any, exp5: any, exp6: any, exp7: any, thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
let different = bindingUpdated4(bindingIndex, exp1, exp2, exp3, exp4);
return bindingUpdated3(bindingIndex + 4, exp5, exp6, exp7) || different ?
updateBinding(
@ -238,7 +240,7 @@ export function pureFunction8(
exp1: any, exp2: any, exp3: any, exp4: any, exp5: any, exp6: any, exp7: any, exp8: any,
thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
const bindingIndex = getTView().bindingStartIndex + slotOffset;
const bindingIndex = getBindingRoot() + slotOffset;
const different = bindingUpdated4(bindingIndex, exp1, exp2, exp3, exp4);
return bindingUpdated4(bindingIndex + 4, exp5, exp6, exp7, exp8) || different ?
updateBinding(
@ -264,7 +266,7 @@ export function pureFunction8(
export function pureFunctionV(
slotOffset: number, pureFn: (...v: any[]) => any, exps: any[], thisArg?: any): any {
// TODO(kara): use bindingRoot instead of bindingStartIndex when implementing host bindings
let bindingIndex = getTView().bindingStartIndex + slotOffset;
let bindingIndex = getBindingRoot() + slotOffset;
let different = false;
for (let i = 0; i < exps.length; i++) {
bindingUpdated(bindingIndex++, exps[i]) && (different = true);

3
packages/core/test/bundling/hello_world/bundle.golden_symbols.json
View File

@ -98,6 +98,9 @@
{
"name": "baseDirectiveCreate"
},
{
"name": "bindingRootIndex"
},
{
"name": "bloomAdd"
},

3
packages/core/test/bundling/todo/bundle.golden_symbols.json
View File

@ -326,6 +326,9 @@
{
"name": "bind"
},
{
"name": "bindingRootIndex"
},
{
"name": "bindingUpdated"
},

30
packages/core/test/render3/directive_spec.ts
View File

@ -15,36 +15,6 @@ import {TemplateFixture} from './render_util';
describe('directive', () => {
describe('host', () => {
it('should support host bindings in directives', () => {
let directiveInstance: Directive|undefined;
class Directive {
klass = 'foo';
static ngDirectiveDef = defineDirective({
type: Directive,
selectors: [['', 'dir', '']],
factory: () => directiveInstance = new Directive,
hostBindings: (directiveIndex: number, elementIndex: number) => {
elementProperty(
elementIndex, 'className', bind(loadDirective<Directive>(directiveIndex).klass));
}
});
}
function Template() { element(0, 'span', [AttributeMarker.SelectOnly, 'dir']); }
const fixture = new TemplateFixture(Template, () => {}, 1, 0, [Directive]);
expect(fixture.html).toEqual('<span class="foo"></span>');
directiveInstance !.klass = 'bar';
fixture.update();
expect(fixture.html).toEqual('<span class="bar"></span>');
});
});
describe('selectors', () => {
it('should match directives with attribute selectors on bindings', () => {

351
packages/core/test/render3/properties_spec.ts
View File

@ -79,8 +79,55 @@ describe('elementProperty', () => {
expect(fixture.html).toEqual('<span id="_otherId_"></span>');
});
describe('host', () => {
let nameComp !: NameComp;
class NameComp {
names !: string[];
static ngComponentDef = defineComponent({
type: NameComp,
selectors: [['name-comp']],
factory: function NameComp_Factory() { return nameComp = new NameComp(); },
consts: 0,
vars: 0,
template: function NameComp_Template(rf: RenderFlags, ctx: NameComp) {},
inputs: {names: 'names'}
});
}
it('should support host bindings in directives', () => {
let directiveInstance: Directive|undefined;
class Directive {
// @HostBinding('className')
klass = 'foo';
static ngDirectiveDef = defineDirective({
type: Directive,
selectors: [['', 'dir', '']],
factory: () => directiveInstance = new Directive,
hostVars: 1,
hostBindings: (directiveIndex: number, elementIndex: number) => {
elementProperty(
elementIndex, 'className', bind(loadDirective<Directive>(directiveIndex).klass));
}
});
}
function Template() { element(0, 'span', [AttributeMarker.SelectOnly, 'dir']); }
const fixture = new TemplateFixture(Template, () => {}, 1, 0, [Directive]);
expect(fixture.html).toEqual('<span class="foo"></span>');
directiveInstance !.klass = 'bar';
fixture.update();
expect(fixture.html).toEqual('<span class="bar"></span>');
});
it('should support host bindings on root component', () => {
class HostBindingComp {
// @HostBinding()
id = 'my-id';
static ngComponentDef = defineComponent({
@ -89,6 +136,7 @@ describe('elementProperty', () => {
factory: () => new HostBindingComp(),
consts: 0,
vars: 0,
hostVars: 1,
hostBindings: (dirIndex: number, elIndex: number) => {
const instance = loadDirective(dirIndex) as HostBindingComp;
elementProperty(elIndex, 'id', bind(instance.id));
@ -101,10 +149,311 @@ describe('elementProperty', () => {
expect(fixture.hostElement.id).toBe('my-id');
fixture.component.id = 'other-id';
tick(fixture.component);
fixture.update();
expect(fixture.hostElement.id).toBe('other-id');
});
it('should support component with host bindings and array literals', () => {
const ff = (v: any) => ['Nancy', v, 'Ned'];
class HostBindingComp {
// @HostBinding()
id = 'my-id';
static ngComponentDef = defineComponent({
type: HostBindingComp,
selectors: [['host-binding-comp']],
factory: () => new HostBindingComp(),
consts: 0,
vars: 0,
hostVars: 1,
hostBindings: (dirIndex: number, elIndex: number) => {
const ctx = loadDirective(dirIndex) as HostBindingComp;
elementProperty(elIndex, 'id', bind(ctx.id));
},
template: (rf: RenderFlags, ctx: HostBindingComp) => {}
});
}
/**
* <name-comp [names]="['Nancy', name, 'Ned']"></name-comp>
* <host-binding-comp></host-binding-comp>
*/
const AppComponent = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
element(0, 'name-comp');
element(1, 'host-binding-comp');
}
if (rf & RenderFlags.Update) {
elementProperty(0, 'names', bind(pureFunction1(1, ff, ctx.name)));
}
}, 2, 3, [HostBindingComp, NameComp]);
const fixture = new ComponentFixture(AppComponent);
const hostBindingEl = fixture.hostElement.querySelector('host-binding-comp') as HTMLElement;
fixture.component.name = 'Betty';
fixture.update();
expect(hostBindingEl.id).toBe('my-id');
expect(nameComp.names).toEqual(['Nancy', 'Betty', 'Ned']);
const firstArray = nameComp.names;
fixture.update();
expect(firstArray).toBe(nameComp.names);
fixture.component.name = 'my-id';
fixture.update();
expect(hostBindingEl.id).toBe('my-id');
expect(nameComp.names).toEqual(['Nancy', 'my-id', 'Ned']);
});
// Note: This is a contrived example. For feature parity with render2, we should make sure it
// works in this way (see https://stackblitz.com/edit/angular-cbqpbe), but a more realistic
// example would be an animation host binding with a literal defining the animation config.
// When animation support is added, we should add another test for that case.
it('should support host bindings that contain array literals', () => {
const ff = (v: any) => ['red', v];
const ff2 = (v: any, v2: any) => [v, v2];
const ff3 = (v: any, v2: any) => [v, 'Nancy', v2];
let hostBindingComp !: HostBindingComp;
/**
* @Component({
* ...
* host: {
* `[id]`: `['red', id]`,
* `[dir]`: `dir`,
* `[title]`: `[title, otherTitle]`
* }
* })
*
*/
class HostBindingComp {
id = 'blue';
dir = 'ltr';
title = 'my title';
otherTitle = 'other title';
static ngComponentDef = defineComponent({
type: HostBindingComp,
selectors: [['host-binding-comp']],
factory: () => hostBindingComp = new HostBindingComp(),
consts: 0,
vars: 0,
hostVars: 8,
hostBindings: (dirIndex: number, elIndex: number) => {
const ctx = loadDirective(dirIndex) as HostBindingComp;
// LViewData: [..., id, dir, title, ctx.id, pf1, ctx.title, ctx.otherTitle, pf2]
elementProperty(elIndex, 'id', bind(pureFunction1(3, ff, ctx.id)));
elementProperty(elIndex, 'dir', bind(ctx.dir));
elementProperty(
elIndex, 'title', bind(pureFunction2(5, ff2, ctx.title, ctx.otherTitle)));
},
template: (rf: RenderFlags, ctx: HostBindingComp) => {}
});
}
/**
* <name-comp [names]="[name, 'Nancy', otherName]"></name-comp>
* <host-binding-comp></host-binding-comp>
*/
const AppComponent = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
element(0, 'name-comp');
element(1, 'host-binding-comp');
}
if (rf & RenderFlags.Update) {
elementProperty(0, 'names', bind(pureFunction2(1, ff3, ctx.name, ctx.otherName)));
}
}, 2, 4, [HostBindingComp, NameComp]);
const fixture = new ComponentFixture(AppComponent);
fixture.component.name = 'Frank';
fixture.component.otherName = 'Joe';
fixture.update();
const hostBindingEl = fixture.hostElement.querySelector('host-binding-comp') as HTMLElement;
expect(hostBindingEl.id).toBe('red,blue');
expect(hostBindingEl.dir).toBe('ltr');
expect(hostBindingEl.title).toBe('my title,other title');
expect(nameComp.names).toEqual(['Frank', 'Nancy', 'Joe']);
const firstArray = nameComp.names;
fixture.update();
expect(firstArray).toBe(nameComp.names);
hostBindingComp.id = 'green';
hostBindingComp.dir = 'rtl';
hostBindingComp.title = 'TITLE';
fixture.update();
expect(hostBindingEl.id).toBe('red,green');
expect(hostBindingEl.dir).toBe('rtl');
expect(hostBindingEl.title).toBe('TITLE,other title');
});
it('should support host bindings with literals from multiple directives', () => {
let hostBindingComp !: HostBindingComp;
let hostBindingDir !: HostBindingDir;
const ff = (v: any) => ['red', v];
/**
* @Component({
* ...
* host: {
* '[id]': '['red', id]'
* }
* })
*
*/
class HostBindingComp {
id = 'blue';
static ngComponentDef = defineComponent({
type: HostBindingComp,
selectors: [['host-binding-comp']],
factory: () => hostBindingComp = new HostBindingComp(),
consts: 0,
vars: 0,
hostVars: 3,
hostBindings: (dirIndex: number, elIndex: number) => {
// LViewData: [..., id, ctx.id, pf1]
const ctx = loadDirective(dirIndex) as HostBindingComp;
elementProperty(elIndex, 'id', bind(pureFunction1(1, ff, ctx.id)));
},
template: (rf: RenderFlags, ctx: HostBindingComp) => {}
});
}
const ff1 = (v: any) => [v, 'other title'];
/**
* @Directive({
* ...
* host: {
* '[title]': '[title, 'other title']'
* }
* })
*
*/
class HostBindingDir {
title = 'my title';
static ngDirectiveDef = defineDirective({
type: HostBindingDir,
selectors: [['', 'hostDir', '']],
factory: () => hostBindingDir = new HostBindingDir(),
hostVars: 3,
hostBindings: (dirIndex: number, elIndex: number) => {
// LViewData [..., title, ctx.title, pf1]
const ctx = loadDirective(dirIndex) as HostBindingDir;
elementProperty(elIndex, 'title', bind(pureFunction1(1, ff1, ctx.title)));
}
});
}
/**
* <host-binding-comp hostDir>
* </host-binding-comp>
*/
const AppComponent = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
element(0, 'host-binding-comp', ['hostDir', '']);
}
}, 1, 0, [HostBindingComp, HostBindingDir]);
const fixture = new ComponentFixture(AppComponent);
const hostElement = fixture.hostElement.querySelector('host-binding-comp') as HTMLElement;
expect(hostElement.id).toBe('red,blue');
expect(hostElement.title).toBe('my title,other title');
hostBindingDir.title = 'blue';
fixture.update();
expect(hostElement.title).toBe('blue,other title');
hostBindingComp.id = 'green';
fixture.update();
expect(hostElement.id).toBe('red,green');
});
it('should support ternary expressions in host bindings', () => {
let hostBindingComp !: HostBindingComp;
const ff = (v: any) => ['red', v];
const ff1 = (v: any) => [v];
/**
* @Component({
* ...
* host: {
* `[id]`: `condition ? ['red', id] : 'green'`,
* `[title]`: `otherCondition ? [title] : 'other title'`
* }
* })
*
*/
class HostBindingComp {
condition = true;
otherCondition = true;
id = 'blue';
title = 'blue';
static ngComponentDef = defineComponent({
type: HostBindingComp,
selectors: [['host-binding-comp']],
factory: () => hostBindingComp = new HostBindingComp(),
consts: 0,
vars: 0,
hostVars: 6,
hostBindings: (dirIndex: number, elIndex: number) => {
// LViewData: [..., id, title, ctx.id, pf1, ctx.title, pf1]
const ctx = loadDirective(dirIndex) as HostBindingComp;
elementProperty(
elIndex, 'id', bind(ctx.condition ? pureFunction1(2, ff, ctx.id) : 'green'));
elementProperty(
elIndex, 'title',
bind(ctx.otherCondition ? pureFunction1(4, ff1, ctx.title) : 'other title'));
},
template: (rf: RenderFlags, ctx: HostBindingComp) => {}
});
}
/**
* <host-binding-comp></host-binding-comp>
* {{ name }}
*/
const AppComponent = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
element(0, 'host-binding-comp');
text(1);
}
if (rf & RenderFlags.Update) {
textBinding(1, bind(ctx.name));
}
}, 2, 1, [HostBindingComp]);
const fixture = new ComponentFixture(AppComponent);
const hostElement = fixture.hostElement.querySelector('host-binding-comp') as HTMLElement;
fixture.component.name = 'Ned';
fixture.update();
expect(hostElement.id).toBe('red,blue');
expect(hostElement.title).toBe('blue');
expect(fixture.html)
.toEqual(`<host-binding-comp id="red,blue" title="blue"></host-binding-comp>Ned`);
hostBindingComp.condition = false;
hostBindingComp.title = 'TITLE';
fixture.update();
expect(hostElement.id).toBe('green');
expect(hostElement.title).toBe('TITLE');
hostBindingComp.otherCondition = false;
fixture.update();
expect(hostElement.id).toBe('green');
expect(hostElement.title).toBe('other title');
});
});
describe('input properties', () => {
let button: MyButton;
let otherDir: OtherDir;