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Make sure vdom after callbacks run sync when in sync mode (#748)
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* sync aftercallbacks

* add tests
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matt-gadd authored Nov 6, 2017
1 parent bab9dd8 commit b22ec2f
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Showing 4 changed files with 51 additions and 15 deletions.
1 change: 1 addition & 0 deletions src/interfaces.d.ts
Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,7 @@ export interface ProjectionOptions extends ProjectorOptions {
deferredRenderCallbacks: Function [];
afterRenderCallbacks: Function[];
merge: boolean;
sync: boolean;
mergeElement?: Element;
rootNode: Element;
}
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2 changes: 2 additions & 0 deletions src/mixins/Projector.ts
Original file line number Diff line number Diff line change
Expand Up @@ -349,6 +349,8 @@ export function ProjectorMixin<P, T extends Constructor<WidgetBase<P>>>(Base: T)
}
});

this._projectionOptions = { ...this._projectionOptions, ...{ sync: !this._async } };

switch (type) {
case AttachType.Append:
this._projection = dom.append(this.root, this._boundRender(), this, this._projectionOptions);
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46 changes: 31 additions & 15 deletions src/vdom.ts
Original file line number Diff line number Diff line change
Expand Up @@ -790,31 +790,47 @@ function addDeferredProperties(hnode: InternalHNode, projectionOptions: Projecti

function runDeferredRenderCallbacks(projectionOptions: ProjectionOptions) {
if (projectionOptions.deferredRenderCallbacks.length) {
global.requestAnimationFrame(() => {
if (projectionOptions.sync) {
while (projectionOptions.deferredRenderCallbacks.length) {
const callback = projectionOptions.deferredRenderCallbacks.shift();
callback && callback();
}
});
}
else {
global.requestAnimationFrame(() => {
while (projectionOptions.deferredRenderCallbacks.length) {
const callback = projectionOptions.deferredRenderCallbacks.shift();
callback && callback();
}
});
}
}
}

function runAfterRenderCallbacks(projectionOptions: ProjectionOptions) {
if (global.requestIdleCallback) {
global.requestIdleCallback(() => {
while (projectionOptions.afterRenderCallbacks.length) {
const callback = projectionOptions.afterRenderCallbacks.shift();
callback && callback();
}
});
if (projectionOptions.sync) {
while (projectionOptions.afterRenderCallbacks.length) {
const callback = projectionOptions.afterRenderCallbacks.shift();
callback && callback();
}
}
else {
setTimeout(() => {
while (projectionOptions.afterRenderCallbacks.length) {
const callback = projectionOptions.afterRenderCallbacks.shift();
callback && callback();
}
});
if (global.requestIdleCallback) {
global.requestIdleCallback(() => {
while (projectionOptions.afterRenderCallbacks.length) {
const callback = projectionOptions.afterRenderCallbacks.shift();
callback && callback();
}
});
}
else {
setTimeout(() => {
while (projectionOptions.afterRenderCallbacks.length) {
const callback = projectionOptions.afterRenderCallbacks.shift();
callback && callback();
}
});
}
}
}

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17 changes: 17 additions & 0 deletions tests/unit/vdom.ts
Original file line number Diff line number Diff line change
Expand Up @@ -2278,6 +2278,23 @@ describe('vdom', () => {

});

describe('sync mode', () => {

it('should run afterRenderCallbacks sync', () => {
const projection = dom.create(v('div', { key: '1' }), projectorStub, { sync: true });
assert.isTrue(projectorStub.emit.calledWith({ type: 'element-created', element: (projection.domNode.childNodes[0] as Element), key: '1' }));
});

it('should run defferedRenderCallbacks sync', () => {
let callCount = 0;
dom.create(v('div', () => {
callCount++;
return {};
}), projectorStub, { sync: true });
assert.strictEqual(callCount, 2);
});
});

describe('node callbacks', () => {

it('element-created not emitted for new nodes without a key', () => {
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