diff --git a/src/Components/Browser.JS/dist/Release/blazor.server.js b/src/Components/Browser.JS/dist/Release/blazor.server.js
index f6c4056f57ca..21e0c21f884b 100644
--- a/src/Components/Browser.JS/dist/Release/blazor.server.js
+++ b/src/Components/Browser.JS/dist/Release/blazor.server.js
@@ -1,15 +1,15 @@
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e}},e.prototype.isITransport=function(e){return e&&"object"==typeof e&&"connect"in e},e.prototype.stopConnection=function(e){if(this.logger.log(c.a.Debug,"HttpConnection.stopConnection("+e+") called while in state "+this.connectionState+"."),this.transport=void 0,e=this.stopError||e,this.stopError=void 0,"Disconnected"!==this.connectionState)if("Connecting "!==this.connectionState){if("Disconnecting"===this.connectionState&&this.stopPromiseResolver(),e?this.logger.log(c.a.Error,"Connection disconnected with error '"+e+"'."):this.logger.log(c.a.Information,"Connection disconnected."),this.connectionId=void 0,this.connectionState="Disconnected",this.onclose&&this.connectionStarted){this.connectionStarted=!1;try{this.onclose(e)}catch(t){this.logger.log(c.a.Error,"HttpConnection.onclose("+e+") threw error '"+t+"'.")}}}else this.logger.log(c.a.Warning,"Call to HttpConnection.stopConnection("+e+") was ignored because the connection hasn't yet left the in the connecting state.");else 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r=o.sent(),t.reject(r),[3,5];case 5:return[3,0];case 6:return[2]}})})},e.concatBuffers=function(e){for(var t=e.map(function(e){return e.byteLength}).reduce(function(e,t){return e+t}),n=new Uint8Array(t),r=0,o=0,i=e;o
* @license MIT
*/
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r=JSON.parse(n),o=r.componentId,i=r.circuitId,a=r.rendererId;if(!!o&&!!i&&!!a)return{node:e,circuitId:i,rendererId:Number.parseInt(a),componentId:Number.parseInt(o)};throw new Error("Found malformed start component comment at "+e.textContent)}catch(t){throw new Error("Found malformed start component comment at "+e.textContent)}}}function f(e,t,n,r){for(var o=n;o>=7)>0&&(r|=128),n.push(r)}while(t>0);t=e.byteLength||e.length;var o=new Uint8Array(n.length+t);return o.set(n,0),o.set(e,n.length),o.buffer},e.parse=function(e){for(var t=[],n=new Uint8Array(e),r=[0,7,14,21,28],o=0;o7)throw new Error("Messages bigger than 2GB are not supported.");if(!(n.byteLength>=o+i+a))throw new Error("Incomplete message.");t.push(n.slice?n.slice(o+i,o+i+a):n.subarray(o+i,o+i+a)),o=o+i+a}return t},e}();var s=new Uint8Array([145,i.MessageType.Ping]),c=function(){function e(){this.name="messagepack",this.version=1,this.transferFormat=i.TransferFormat.Binary,this.errorResult=1,this.voidResult=2,this.nonVoidResult=3}return e.prototype.parseMessages=function(e,t){if(!(e instanceof r.Buffer||(n=e,n&&"undefined"!=typeof ArrayBuffer&&(n instanceof ArrayBuffer||n.constructor&&"ArrayBuffer"===n.constructor.name))))throw new Error("Invalid input for MessagePack hub protocol. 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You tried to pass "+r.length+".");var o=Module.stackSave();try{for(var a=Module.stackAlloc(r.length),u=Module.stackAlloc(4),l=0;l0&&!t)throw new Error("New logical elements must start empty, or allowExistingContents must be true");return e[r]=[],e}function u(e,t,n){var a=e;if(e instanceof Comment&&(s(a)&&s(a).length>0))throw new Error("Not implemented: inserting non-empty logical container");if(l(a))throw new Error("Not implemented: moving existing logical children");var i=s(t);if(n0;)e(r,0);var a=r;a.parentNode.removeChild(a)},t.getLogicalParent=l,t.getLogicalSiblingEnd=function(e){return e[a]||null},t.getLogicalChild=function(e,t){return s(e)[t]},t.isSvgElement=function(e){return"http://www.w3.org/2000/svg"===c(e).namespaceURI},t.getLogicalChildrenArray=s,t.permuteLogicalChildren=function(e,t){var n=s(e);t.forEach(function(e){e.moveRangeStart=n[e.fromSiblingIndex],e.moveRangeEnd=function e(t){if(t instanceof Element)return t;var n=f(t);if(n)return n.previousSibling;var r=l(t);return r instanceof Element?r.lastChild:e(r)}(e.moveRangeStart)}),t.forEach(function(t){var r=t.moveToBeforeMarker=document.createComment("marker"),o=n[t.toSiblingIndex+1];o?o.parentNode.insertBefore(r,o):d(r,e)}),t.forEach(function(e){for(var t=e.moveToBeforeMarker,n=t.parentNode,r=e.moveRangeStart,o=e.moveRangeEnd,a=r;a;){var i=a.nextSibling;if(n.insertBefore(a,t),a===o)break;a=i}n.removeChild(t)}),t.forEach(function(e){n[e.toSiblingIndex]=e.moveRangeStart})},t.getClosestDomElement=c},,,function(e,t,n){"use strict";var r;!function(e){window.DotNet=e;var t=[],n={},r={},o=1,a=null;function i(e){t.push(e)}function u(e,t){for(var n=[],r=2;r0&&o[o.length-1])&&(6===a[0]||2===a[0])){i=0;continue}if(3===a[0]&&(!o||a[1]>o[0]&&a[1]0&&o[o.length-1])&&(6===a[0]||2===a[0])){i=0;continue}if(3===a[0]&&(!o||a[1]>o[0]&&a[1]0&&o[o.length-1])&&(6===a[0]||2===a[0])){i=0;continue}if(3===a[0]&&(!o||a[1]>o[0]&&a[1]0&&o[o.length-1])&&(6===a[0]||2===a[0])){i=0;continue}if(3===a[0]&&(!o||a[1]>o[0]&&a[1]-1?a.substring(0,u):"",s=u>-1?a.substring(u+1):a,c=t.monoPlatform.findMethod(e,l,s,i);t.monoPlatform.callMethod(c,null,r)},callMethod:function(e,n,r){if(r.length>4)throw new Error("Currently, MonoPlatform supports passing a maximum of 4 arguments from JS to .NET. You tried to pass "+r.length+".");var o=Module.stackSave();try{for(var a=Module.stackAlloc(r.length),u=Module.stackAlloc(4),l=0;l): Promise {
const circuitHandlers: CircuitHandler[] = [new AutoReconnectCircuitHandler(logger)];
window['Blazor'].circuitHandlers = circuitHandlers;
- // In the background, start loading the boot config and any embedded resources
- const embeddedResourcesPromise = fetchBootConfigAsync().then(bootConfig => {
- return loadEmbeddedResourcesAsync(bootConfig);
- });
-
// pass options.configureSignalR to configure the signalR.HubConnectionBuilder
const initialConnection = await initializeConnection(options, circuitHandlers, logger);
@@ -62,9 +57,6 @@ async function boot(userOptions?: Partial): Promise {
}
}
- // Ensure any embedded resources have been loaded before starting the app
- await embeddedResourcesPromise;
-
const circuit = await startCircuit(initialConnection);
if (!circuit) {
diff --git a/src/Components/Browser.JS/src/Rendering/BrowserRenderer.ts b/src/Components/Browser.JS/src/Rendering/BrowserRenderer.ts
index fda97aa8ec8c..89623b81a8a9 100644
--- a/src/Components/Browser.JS/src/Rendering/BrowserRenderer.ts
+++ b/src/Components/Browser.JS/src/Rendering/BrowserRenderer.ts
@@ -3,6 +3,7 @@ import { EventDelegator } from './EventDelegator';
import { EventForDotNet, UIEventArgs } from './EventForDotNet';
import { LogicalElement, PermutationListEntry, toLogicalElement, insertLogicalChild, removeLogicalChild, getLogicalParent, getLogicalChild, createAndInsertLogicalContainer, isSvgElement, getLogicalChildrenArray, getLogicalSiblingEnd, permuteLogicalChildren, getClosestDomElement } from './LogicalElements';
import { applyCaptureIdToElement } from './ElementReferenceCapture';
+import { EventFieldInfo } from './EventFieldInfo';
const selectValuePropname = '_blazorSelectValue';
const sharedTemplateElemForParsing = document.createElement('template');
const sharedSvgElemForParsing = document.createElementNS('http://www.w3.org/2000/svg', 'g');
@@ -18,8 +19,8 @@ export class BrowserRenderer {
public constructor(browserRendererId: number) {
this.browserRendererId = browserRendererId;
- this.eventDelegator = new EventDelegator((event, eventHandlerId, eventArgs) => {
- raiseEvent(event, this.browserRendererId, eventHandlerId, eventArgs);
+ this.eventDelegator = new EventDelegator((event, eventHandlerId, eventArgs, eventFieldInfo) => {
+ raiseEvent(event, this.browserRendererId, eventHandlerId, eventArgs, eventFieldInfo);
});
}
@@ -50,7 +51,7 @@ export class BrowserRenderer {
const ownerDocument = getClosestDomElement(element).ownerDocument;
const activeElementBefore = ownerDocument && ownerDocument.activeElement;
- this.applyEdits(batch, element, 0, edits, referenceFrames);
+ this.applyEdits(batch, componentId, element, 0, edits, referenceFrames);
// Try to restore focus in case it was lost due to an element move
if ((activeElementBefore instanceof HTMLElement) && ownerDocument && ownerDocument.activeElement !== activeElementBefore) {
@@ -70,7 +71,7 @@ export class BrowserRenderer {
this.childComponentLocations[componentId] = element;
}
- private applyEdits(batch: RenderBatch, parent: LogicalElement, childIndex: number, edits: ArraySegment, referenceFrames: ArrayValues) {
+ private applyEdits(batch: RenderBatch, componentId: number, parent: LogicalElement, childIndex: number, edits: ArraySegment, referenceFrames: ArrayValues) {
let currentDepth = 0;
let childIndexAtCurrentDepth = childIndex;
let permutationList: PermutationListEntry[] | undefined;
@@ -91,7 +92,7 @@ export class BrowserRenderer {
const frameIndex = editReader.newTreeIndex(edit);
const frame = batch.referenceFramesEntry(referenceFrames, frameIndex);
const siblingIndex = editReader.siblingIndex(edit);
- this.insertFrame(batch, parent, childIndexAtCurrentDepth + siblingIndex, referenceFrames, frame, frameIndex);
+ this.insertFrame(batch, componentId, parent, childIndexAtCurrentDepth + siblingIndex, referenceFrames, frame, frameIndex);
break;
}
case EditType.removeFrame: {
@@ -105,7 +106,7 @@ export class BrowserRenderer {
const siblingIndex = editReader.siblingIndex(edit);
const element = getLogicalChild(parent, childIndexAtCurrentDepth + siblingIndex);
if (element instanceof Element) {
- this.applyAttribute(batch, element, frame);
+ this.applyAttribute(batch, componentId, element, frame);
} else {
throw new Error('Cannot set attribute on non-element child');
}
@@ -182,12 +183,12 @@ export class BrowserRenderer {
}
}
- private insertFrame(batch: RenderBatch, parent: LogicalElement, childIndex: number, frames: ArrayValues, frame: RenderTreeFrame, frameIndex: number): number {
+ private insertFrame(batch: RenderBatch, componentId: number, parent: LogicalElement, childIndex: number, frames: ArrayValues, frame: RenderTreeFrame, frameIndex: number): number {
const frameReader = batch.frameReader;
const frameType = frameReader.frameType(frame);
switch (frameType) {
case FrameType.element:
- this.insertElement(batch, parent, childIndex, frames, frame, frameIndex);
+ this.insertElement(batch, componentId, parent, childIndex, frames, frame, frameIndex);
return 1;
case FrameType.text:
this.insertText(batch, parent, childIndex, frame);
@@ -198,7 +199,7 @@ export class BrowserRenderer {
this.insertComponent(batch, parent, childIndex, frame);
return 1;
case FrameType.region:
- return this.insertFrameRange(batch, parent, childIndex, frames, frameIndex + 1, frameIndex + frameReader.subtreeLength(frame));
+ return this.insertFrameRange(batch, componentId, parent, childIndex, frames, frameIndex + 1, frameIndex + frameReader.subtreeLength(frame));
case FrameType.elementReferenceCapture:
if (parent instanceof Element) {
applyCaptureIdToElement(parent, frameReader.elementReferenceCaptureId(frame)!);
@@ -215,7 +216,7 @@ export class BrowserRenderer {
}
}
- private insertElement(batch: RenderBatch, parent: LogicalElement, childIndex: number, frames: ArrayValues, frame: RenderTreeFrame, frameIndex: number) {
+ private insertElement(batch: RenderBatch, componentId: number, parent: LogicalElement, childIndex: number, frames: ArrayValues, frame: RenderTreeFrame, frameIndex: number) {
const frameReader = batch.frameReader;
const tagName = frameReader.elementName(frame)!;
const newDomElementRaw = tagName === 'svg' || isSvgElement(parent) ?
@@ -229,11 +230,11 @@ export class BrowserRenderer {
for (let descendantIndex = frameIndex + 1; descendantIndex < descendantsEndIndexExcl; descendantIndex++) {
const descendantFrame = batch.referenceFramesEntry(frames, descendantIndex);
if (frameReader.frameType(descendantFrame) === FrameType.attribute) {
- this.applyAttribute(batch, newDomElementRaw, descendantFrame);
+ this.applyAttribute(batch, componentId, newDomElementRaw, descendantFrame);
} else {
// As soon as we see a non-attribute child, all the subsequent child frames are
// not attributes, so bail out and insert the remnants recursively
- this.insertFrameRange(batch, newElement, 0, frames, descendantIndex, descendantsEndIndexExcl);
+ this.insertFrameRange(batch, componentId, newElement, 0, frames, descendantIndex, descendantsEndIndexExcl);
break;
}
}
@@ -265,7 +266,7 @@ export class BrowserRenderer {
}
}
- private applyAttribute(batch: RenderBatch, toDomElement: Element, attributeFrame: RenderTreeFrame) {
+ private applyAttribute(batch: RenderBatch, componentId: number, toDomElement: Element, attributeFrame: RenderTreeFrame) {
const frameReader = batch.frameReader;
const attributeName = frameReader.attributeName(attributeFrame)!;
const browserRendererId = this.browserRendererId;
@@ -277,7 +278,7 @@ export class BrowserRenderer {
if (firstTwoChars !== 'on' || !eventName) {
throw new Error(`Attribute has nonzero event handler ID, but attribute name '${attributeName}' does not start with 'on'.`);
}
- this.eventDelegator.setListener(toDomElement, eventName, eventHandlerId);
+ this.eventDelegator.setListener(toDomElement, eventName, eventHandlerId, componentId);
return;
}
@@ -352,11 +353,11 @@ export class BrowserRenderer {
}
}
- private insertFrameRange(batch: RenderBatch, parent: LogicalElement, childIndex: number, frames: ArrayValues, startIndex: number, endIndexExcl: number): number {
+ private insertFrameRange(batch: RenderBatch, componentId: number, parent: LogicalElement, childIndex: number, frames: ArrayValues, startIndex: number, endIndexExcl: number): number {
const origChildIndex = childIndex;
for (let index = startIndex; index < endIndexExcl; index++) {
const frame = batch.referenceFramesEntry(frames, index);
- const numChildrenInserted = this.insertFrame(batch, parent, childIndex, frames, frame, index);
+ const numChildrenInserted = this.insertFrame(batch, componentId, parent, childIndex, frames, frame, index);
childIndex += numChildrenInserted;
// Skip over any descendants, since they are already dealt with recursively
@@ -397,7 +398,7 @@ function countDescendantFrames(batch: RenderBatch, frame: RenderTreeFrame): numb
}
}
-function raiseEvent(event: Event, browserRendererId: number, eventHandlerId: number, eventArgs: EventForDotNet) {
+function raiseEvent(event: Event, browserRendererId: number, eventHandlerId: number, eventArgs: EventForDotNet, eventFieldInfo: EventFieldInfo | null) {
if (preventDefaultEvents[event.type]) {
event.preventDefault();
}
@@ -406,6 +407,7 @@ function raiseEvent(event: Event, browserRendererId: number, eventHandlerId: num
browserRendererId,
eventHandlerId,
eventArgsType: eventArgs.type,
+ eventFieldInfo: eventFieldInfo,
};
return DotNet.invokeMethodAsync(
diff --git a/src/Components/Browser.JS/src/Rendering/EventDelegator.ts b/src/Components/Browser.JS/src/Rendering/EventDelegator.ts
index 6b95994076ef..332d3cb6cf8b 100644
--- a/src/Components/Browser.JS/src/Rendering/EventDelegator.ts
+++ b/src/Components/Browser.JS/src/Rendering/EventDelegator.ts
@@ -1,4 +1,5 @@
import { EventForDotNet, UIEventArgs } from './EventForDotNet';
+import { EventFieldInfo } from './EventFieldInfo';
const nonBubblingEvents = toLookup([
'abort',
@@ -21,7 +22,7 @@ const nonBubblingEvents = toLookup([
]);
export interface OnEventCallback {
- (event: Event, eventHandlerId: number, eventArgs: EventForDotNet): void;
+ (event: Event, eventHandlerId: number, eventArgs: EventForDotNet, eventFieldInfo: EventFieldInfo | null): void;
}
// Responsible for adding/removing the eventInfo on an expando property on DOM elements, and
@@ -40,7 +41,7 @@ export class EventDelegator {
this.eventInfoStore = new EventInfoStore(this.onGlobalEvent.bind(this));
}
- public setListener(element: Element, eventName: string, eventHandlerId: number) {
+ public setListener(element: Element, eventName: string, eventHandlerId: number, renderingComponentId: number) {
// Ensure we have a place to store event info for this element
let infoForElement: EventHandlerInfosForElement = element[this.eventsCollectionKey];
if (!infoForElement) {
@@ -53,7 +54,7 @@ export class EventDelegator {
this.eventInfoStore.update(oldInfo.eventHandlerId, eventHandlerId);
} else {
// Go through the whole flow which might involve registering a new global handler
- const newInfo = { element, eventName, eventHandlerId };
+ const newInfo = { element, eventName, eventHandlerId, renderingComponentId };
this.eventInfoStore.add(newInfo);
infoForElement[eventName] = newInfo;
}
@@ -89,7 +90,7 @@ export class EventDelegator {
const eventIsNonBubbling = nonBubblingEvents.hasOwnProperty(evt.type);
while (candidateElement) {
if (candidateElement.hasOwnProperty(this.eventsCollectionKey)) {
- const handlerInfos = candidateElement[this.eventsCollectionKey];
+ const handlerInfos: EventHandlerInfosForElement = candidateElement[this.eventsCollectionKey];
if (handlerInfos.hasOwnProperty(evt.type)) {
// We are going to raise an event for this element, so prepare info needed by the .NET code
if (!eventArgs) {
@@ -97,7 +98,8 @@ export class EventDelegator {
}
const handlerInfo = handlerInfos[evt.type];
- this.onEvent(evt, handlerInfo.eventHandlerId, eventArgs);
+ const eventFieldInfo = EventFieldInfo.fromEvent(handlerInfo.renderingComponentId, evt);
+ this.onEvent(evt, handlerInfo.eventHandlerId, eventArgs, eventFieldInfo);
}
}
@@ -180,6 +182,11 @@ interface EventHandlerInfo {
element: Element;
eventName: string;
eventHandlerId: number;
+
+ // The component whose tree includes the event handler attribute frame, *not* necessarily the
+ // same component that will be re-rendered after the event is handled (since we re-render the
+ // component that supplied the delegate, not the one that rendered the event handler frame)
+ renderingComponentId: number;
}
function toLookup(items: string[]): { [key: string]: boolean } {
diff --git a/src/Components/Browser.JS/src/Rendering/EventFieldInfo.ts b/src/Components/Browser.JS/src/Rendering/EventFieldInfo.ts
new file mode 100644
index 000000000000..205f5d0cf276
--- /dev/null
+++ b/src/Components/Browser.JS/src/Rendering/EventFieldInfo.ts
@@ -0,0 +1,34 @@
+export class EventFieldInfo {
+ constructor(public componentId: number, public fieldValue: string | boolean) {
+ }
+
+ public static fromEvent(componentId: number, event: Event): EventFieldInfo | null {
+ const elem = event.target;
+ if (elem instanceof Element) {
+ const fieldData = getFormFieldData(elem);
+ if (fieldData) {
+ return new EventFieldInfo(componentId, fieldData.value);
+ }
+ }
+
+ // This event isn't happening on a form field that we can reverse-map back to some incoming attribute
+ return null;
+ }
+}
+
+function getFormFieldData(elem: Element) {
+ // The logic in here should be the inverse of the logic in BrowserRenderer's tryApplySpecialProperty.
+ // That is, we're doing the reverse mapping, starting from an HTML property and reconstructing which
+ // "special" attribute would have been mapped to that property.
+ if (elem instanceof HTMLInputElement) {
+ return (elem.type && elem.type.toLowerCase() === 'checkbox')
+ ? { value: elem.checked }
+ : { value: elem.value };
+ }
+
+ if (elem instanceof HTMLSelectElement || elem instanceof HTMLTextAreaElement) {
+ return { value: elem.value };
+ }
+
+ return null;
+}
diff --git a/src/Components/Browser.JS/src/Rendering/EventForDotNet.ts b/src/Components/Browser.JS/src/Rendering/EventForDotNet.ts
index 070b8d2f0eb7..18120f11e9ea 100644
--- a/src/Components/Browser.JS/src/Rendering/EventForDotNet.ts
+++ b/src/Components/Browser.JS/src/Rendering/EventForDotNet.ts
@@ -91,19 +91,9 @@ export class EventForDotNet {
function parseDragEvent(event: any) {
return {
- type: event.type,
- detail: event.detail,
+ ...parseMouseEvent(event),
dataTransfer: event.dataTransfer,
- screenX: event.screenX,
- screenY: event.screenY,
- clientX: event.clientX,
- clientY: event.clientY,
- button: event.button,
- buttons: event.buttons,
- ctrlKey: event.ctrlKey,
- shiftKey: event.shiftKey,
- altKey: event.altKey,
- metaKey: event.metaKey,
+
};
}
diff --git a/src/Components/Browser.JS/yarn.lock b/src/Components/Browser.JS/yarn.lock
index 496c066ea13a..3f0d6bdad52e 100644
--- a/src/Components/Browser.JS/yarn.lock
+++ b/src/Components/Browser.JS/yarn.lock
@@ -599,7 +599,7 @@ async-limiter@~1.0.0:
resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
integrity sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==
-async@^2.5.0, async@^2.6.1:
+async@^2.6.1:
version "2.6.2"
resolved "https://registry.yarnpkg.com/async/-/async-2.6.2.tgz#18330ea7e6e313887f5d2f2a904bac6fe4dd5381"
integrity sha512-H1qVYh1MYhEEFLsP97cVKqCGo7KfCyTt6uEWqsTBr9SO84oK9Uwbyd/yCW+6rKJLHksBNUVWZDAjfS+Ccx0Bbg==
@@ -1979,12 +1979,12 @@ growly@^1.3.0:
resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
integrity sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=
-handlebars@^4.1.0:
- version "4.1.0"
- resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.1.0.tgz#0d6a6f34ff1f63cecec8423aa4169827bf787c3a"
- integrity sha512-l2jRuU1NAWK6AW5qqcTATWQJvNPEwkM7NEKSiv/gqOsoSQbVoWyqVEY5GS+XPQ88zLNmqASRpzfdm8d79hJS+w==
+handlebars@^4.1.0, handlebars@^4.1.2:
+ version "4.1.2"
+ resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.1.2.tgz#b6b37c1ced0306b221e094fc7aca3ec23b131b67"
+ integrity sha512-nvfrjqvt9xQ8Z/w0ijewdD/vvWDTOweBUm96NTr66Wfvo1mJenBLwcYmPs3TIBP5ruzYGD7Hx/DaM9RmhroGPw==
dependencies:
- async "^2.5.0"
+ neo-async "^2.6.0"
optimist "^0.6.1"
source-map "^0.6.1"
optionalDependencies:
@@ -2841,18 +2841,10 @@ jest@^24.1.0:
resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
-js-yaml@^3.12.0:
- version "3.12.1"
- resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.12.1.tgz#295c8632a18a23e054cf5c9d3cecafe678167600"
- integrity sha512-um46hB9wNOKlwkHgiuyEVAybXBjwFUV0Z/RaHJblRd9DXltue9FTYvzCr9ErQrK9Adz5MU4gHWVaNUfdmrC8qA==
- dependencies:
- argparse "^1.0.7"
- esprima "^4.0.0"
-
-js-yaml@^3.13.0:
- version "3.13.0"
- resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.0.tgz#38ee7178ac0eea2c97ff6d96fff4b18c7d8cf98e"
- integrity sha512-pZZoSxcCYco+DIKBTimr67J6Hy+EYGZDY/HCWC+iAEA9h1ByhMXAIVUXMcMFpOCxQ/xjXmPI2MkDL5HRm5eFrQ==
+js-yaml@^3.12.0, js-yaml@^3.13.0, js-yaml@^3.13.1:
+ version "3.13.1"
+ resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
+ integrity sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==
dependencies:
argparse "^1.0.7"
esprima "^4.0.0"
@@ -3344,6 +3336,11 @@ neo-async@^2.5.0:
resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.0.tgz#b9d15e4d71c6762908654b5183ed38b753340835"
integrity sha512-MFh0d/Wa7vkKO3Y3LlacqAEeHK0mckVqzDieUKTT+KGxi+zIpeVsFxymkIiRpbpDziHc290Xr9A1O4Om7otoRA==
+neo-async@^2.6.0:
+ version "2.6.1"
+ resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.1.tgz#ac27ada66167fa8849a6addd837f6b189ad2081c"
+ integrity sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw==
+
nice-try@^1.0.4:
version "1.0.5"
resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
diff --git a/src/Components/Browser/ref/Microsoft.AspNetCore.Components.Browser.netstandard2.0.cs b/src/Components/Browser/ref/Microsoft.AspNetCore.Components.Browser.netstandard2.0.cs
index 1d85e121578e..2a4866299fcf 100644
--- a/src/Components/Browser/ref/Microsoft.AspNetCore.Components.Browser.netstandard2.0.cs
+++ b/src/Components/Browser/ref/Microsoft.AspNetCore.Components.Browser.netstandard2.0.cs
@@ -12,6 +12,7 @@ public partial class BrowserEventDescriptor
public BrowserEventDescriptor() { }
public int BrowserRendererId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute]set { } }
public string EventArgsType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute]set { } }
+ public Microsoft.AspNetCore.Components.Rendering.EventFieldInfo EventFieldInfo { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute]set { } }
public int EventHandlerId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute]set { } }
}
}
diff --git a/src/Components/Browser/src/RendererRegistryEventDispatcher.cs b/src/Components/Browser/src/RendererRegistryEventDispatcher.cs
index f00fe33aa6ef..894b2172e6d8 100644
--- a/src/Components/Browser/src/RendererRegistryEventDispatcher.cs
+++ b/src/Components/Browser/src/RendererRegistryEventDispatcher.cs
@@ -21,9 +21,38 @@ public static class RendererRegistryEventDispatcher
public static Task DispatchEvent(
BrowserEventDescriptor eventDescriptor, string eventArgsJson)
{
+ InterpretEventDescriptor(eventDescriptor);
var eventArgs = ParseEventArgsJson(eventDescriptor.EventArgsType, eventArgsJson);
var renderer = RendererRegistry.Current.Find(eventDescriptor.BrowserRendererId);
- return renderer.DispatchEventAsync(eventDescriptor.EventHandlerId, eventArgs);
+ return renderer.DispatchEventAsync(eventDescriptor.EventHandlerId, eventDescriptor.EventFieldInfo, eventArgs);
+ }
+
+ private static void InterpretEventDescriptor(BrowserEventDescriptor eventDescriptor)
+ {
+ // The incoming field value can be either a bool or a string, but since the .NET property
+ // type is 'object', it will deserialize initially as a JsonElement
+ var fieldInfo = eventDescriptor.EventFieldInfo;
+ if (fieldInfo != null)
+ {
+ if (fieldInfo.FieldValue is JsonElement attributeValueJsonElement)
+ {
+ switch (attributeValueJsonElement.Type)
+ {
+ case JsonValueType.True:
+ case JsonValueType.False:
+ fieldInfo.FieldValue = attributeValueJsonElement.GetBoolean();
+ break;
+ default:
+ fieldInfo.FieldValue = attributeValueJsonElement.GetString();
+ break;
+ }
+ }
+ else
+ {
+ // Unanticipated value type. Ensure we don't do anything with it.
+ eventDescriptor.EventFieldInfo = null;
+ }
+ }
}
private static UIEventArgs ParseEventArgsJson(string eventArgsType, string eventArgsJson)
@@ -105,6 +134,11 @@ public class BrowserEventDescriptor
/// For framework use only.
///
public string EventArgsType { get; set; }
+
+ ///
+ /// For framework use only.
+ ///
+ public EventFieldInfo EventFieldInfo { get; set; }
}
}
}
diff --git a/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.Manual.cs b/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.Manual.cs
index 0b9e98dbda98..e706648edfba 100644
--- a/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.Manual.cs
+++ b/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.Manual.cs
@@ -270,9 +270,11 @@ public Router() { }
public System.Reflection.Assembly AppAssembly { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } private set { throw null; }}
[Microsoft.AspNetCore.Components.ParameterAttribute]
public Microsoft.AspNetCore.Components.RenderFragment NotFoundContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } private set { throw null; }}
+ public Microsoft.AspNetCore.Components.RenderFragment NotAuthorizedContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } private set { throw null; }}
+ public Microsoft.AspNetCore.Components.RenderFragment AuthorizingContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } private set { throw null; }}
public void Configure(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { }
public void Dispose() { }
protected virtual void Render(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder, System.Type handler, System.Collections.Generic.IDictionary parameters) { }
public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterCollection parameters) { throw null; }
}
-}
\ No newline at end of file
+}
diff --git a/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.cs b/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.cs
index 7bdacfbc4b0d..be05804ba786 100644
--- a/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.cs
+++ b/src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.cs
@@ -20,6 +20,7 @@ protected void NotifyAuthenticationStateChanged(System.Threading.Tasks.Task Tokens { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
}
+ public partial class EventFieldInfo
+ {
+ public EventFieldInfo() { }
+ public int ComponentId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute]set { } }
+ public object FieldValue { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute]set { } }
+ }
public partial class HtmlRenderer : Microsoft.AspNetCore.Components.Rendering.Renderer
{
public HtmlRenderer(System.IServiceProvider serviceProvider, System.Func htmlEncoder, Microsoft.AspNetCore.Components.Rendering.IDispatcher dispatcher) : base (default(System.IServiceProvider)) { }
@@ -731,7 +727,7 @@ public event System.UnhandledExceptionEventHandler UnhandledSynchronizationExcep
protected internal virtual void AddToRenderQueue(int componentId, Microsoft.AspNetCore.Components.RenderFragment renderFragment) { }
protected internal int AssignRootComponentId(Microsoft.AspNetCore.Components.IComponent component) { throw null; }
public static Microsoft.AspNetCore.Components.Rendering.IDispatcher CreateDefaultDispatcher() { throw null; }
- public virtual System.Threading.Tasks.Task DispatchEventAsync(int eventHandlerId, Microsoft.AspNetCore.Components.UIEventArgs eventArgs) { throw null; }
+ public virtual System.Threading.Tasks.Task DispatchEventAsync(int eventHandlerId, Microsoft.AspNetCore.Components.Rendering.EventFieldInfo fieldInfo, Microsoft.AspNetCore.Components.UIEventArgs eventArgs) { throw null; }
public void Dispose() { }
protected virtual void Dispose(bool disposing) { }
protected abstract void HandleException(System.Exception exception);
@@ -777,7 +773,7 @@ public void AddContent(int sequence, string textContent) { }
public void AddContent(int sequence, Microsoft.AspNetCore.Components.RenderFragment fragment, T value) { }
public void AddElementReferenceCapture(int sequence, System.Action elementReferenceCaptureAction) { }
public void AddMarkupContent(int sequence, string markupContent) { }
- public void AddMultipleAttributes(int sequence, System.Collections.Generic.IEnumerable> attributes) { }
+ public void AddMultipleAttributes(int sequence, System.Collections.Generic.IEnumerable> attributes) { }
public void Clear() { }
public void CloseComponent() { }
public void CloseElement() { }
@@ -786,6 +782,7 @@ public void OpenComponent(int sequence, System.Type componentType) { }
public void OpenComponent(int sequence) where TComponent : Microsoft.AspNetCore.Components.IComponent { }
public void OpenElement(int sequence, string elementName) { }
public void SetKey(object value) { }
+ public void SetUpdatesAttributeName(string updatesAttributeName) { }
}
[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
public readonly partial struct RenderTreeDiff
diff --git a/src/Components/Components/src/BindAttributes.cs b/src/Components/Components/src/BindAttributes.cs
index 3506b485fa72..258ca0e1f028 100644
--- a/src/Components/Components/src/BindAttributes.cs
+++ b/src/Components/Components/src/BindAttributes.cs
@@ -15,6 +15,10 @@ namespace Microsoft.AspNetCore.Components
// when a specific type attribute is applied.
[BindInputElement(null, null, "value", "onchange")]
+ // Handles cases like - this is a fallback and will be ignored
+ // when a specific type attribute is applied.
+ [BindInputElement(null, "value", "value", "onchange")]
+
[BindInputElement("checkbox", null, "checked", "onchange")]
[BindInputElement("text", null, "value", "onchange")]
diff --git a/src/Components/Components/src/EventCallbackFactoryBinderExtensions.cs b/src/Components/Components/src/EventCallbackFactoryBinderExtensions.cs
index 16fe53ad2614..9e5458780f25 100644
--- a/src/Components/Components/src/EventCallbackFactoryBinderExtensions.cs
+++ b/src/Components/Components/src/EventCallbackFactoryBinderExtensions.cs
@@ -687,13 +687,26 @@ private static EventCallback CreateBinderCore(
{
}
- // We only invoke the setter if the conversion didn't throw. This is valuable because it allows us to attempt
- // to process invalid input but avoid dirtying the state of the component if can't be converted. Imagine if
- // we assigned default(T) on failure - this would result in trouncing the user's typed in value.
+ // We only invoke the setter if the conversion didn't throw, or if the newly-entered value is empty.
+ // If the user entered some non-empty value we couldn't parse, we leave the state of the .NET field
+ // unchanged, which for a two-way binding results in the UI reverting to its previous valid state
+ // because the diff will see the current .NET output no longer matches the render tree since we
+ // patched it to reflect the state of the UI.
+ //
+ // This reversion behavior is valuable because alternatives are problematic:
+ // - If we assigned default(T) on failure, the user would lose whatever data they were editing,
+ // for example if they accidentally pressed an alphabetical key while editing a number with
+ // @bind:event="oninput"
+ // - If the diff mechanism didn't revert to the previous good value, the user wouldn't necessarily
+ // know that the data they are submitting is different from what they think they've typed
if (converted)
{
setter(value);
}
+ else if (string.Empty.Equals(e.Value))
+ {
+ setter(default);
+ }
};
return factory.Create(receiver, callback);
}
diff --git a/src/Components/Components/src/Forms/InputComponents/InputBase.cs b/src/Components/Components/src/Forms/InputComponents/InputBase.cs
index da13ccbdeed9..3d0047422319 100644
--- a/src/Components/Components/src/Forms/InputComponents/InputBase.cs
+++ b/src/Components/Components/src/Forms/InputComponents/InputBase.cs
@@ -40,7 +40,7 @@ public abstract class InputBase : ComponentBase
/// Gets or sets the value of the input. This should be used with two-way binding.
///
///
- /// @bind-Value="@model.PropertyName"
+ /// @bind-Value="model.PropertyName"
///
[Parameter] public T Value { get; private set; }
diff --git a/src/Components/Components/src/Forms/InputComponents/InputCheckbox.cs b/src/Components/Components/src/Forms/InputComponents/InputCheckbox.cs
index e25867aa1a8b..1eb09e022d8e 100644
--- a/src/Components/Components/src/Forms/InputComponents/InputCheckbox.cs
+++ b/src/Components/Components/src/Forms/InputComponents/InputCheckbox.cs
@@ -9,7 +9,7 @@ namespace Microsoft.AspNetCore.Components.Forms
/* This is exactly equivalent to a .razor file containing:
*
* @inherits InputBase
- *
+ *
*
* The only reason it's not implemented as a .razor file is that we don't presently have the ability to compile those
* files within this project. Developers building their own input components should use Razor syntax.
diff --git a/src/Components/Components/src/Forms/InputComponents/InputText.cs b/src/Components/Components/src/Forms/InputComponents/InputText.cs
index 61b4ea13dcf3..8617bbc7845a 100644
--- a/src/Components/Components/src/Forms/InputComponents/InputText.cs
+++ b/src/Components/Components/src/Forms/InputComponents/InputText.cs
@@ -10,7 +10,7 @@ namespace Microsoft.AspNetCore.Components.Forms
/* This is almost equivalent to a .razor file containing:
*
* @inherits InputBase
- *
+ *
*
* The only reason it's not implemented as a .razor file is that we don't presently have the ability to compile those
* files within this project. Developers building their own input components should use Razor syntax.
diff --git a/src/Components/Components/src/Forms/InputComponents/InputTextArea.cs b/src/Components/Components/src/Forms/InputComponents/InputTextArea.cs
index e170d4ff1996..e7a9a172a95a 100644
--- a/src/Components/Components/src/Forms/InputComponents/InputTextArea.cs
+++ b/src/Components/Components/src/Forms/InputComponents/InputTextArea.cs
@@ -10,7 +10,7 @@ namespace Microsoft.AspNetCore.Components.Forms
/* This is almost equivalent to a .razor file containing:
*
* @inherits InputBase
- *
+ *
*
* The only reason it's not implemented as a .razor file is that we don't presently have the ability to compile those
* files within this project. Developers building their own input components should use Razor syntax.
diff --git a/src/Components/Components/src/ParameterAttribute.cs b/src/Components/Components/src/ParameterAttribute.cs
index 5fb5ec208847..afad81d5254c 100644
--- a/src/Components/Components/src/ParameterAttribute.cs
+++ b/src/Components/Components/src/ParameterAttribute.cs
@@ -27,7 +27,7 @@ public sealed class ParameterAttribute : Attribute
///
///
/// should only be applied to parameters of a type that
- /// can be used with
+ /// can be used with
/// such as .
///
///
diff --git a/src/Components/Components/src/RenderTree/ArrayBuilder.cs b/src/Components/Components/src/RenderTree/ArrayBuilder.cs
index 6d38c95b32ee..25dbe2054848 100644
--- a/src/Components/Components/src/RenderTree/ArrayBuilder.cs
+++ b/src/Components/Components/src/RenderTree/ArrayBuilder.cs
@@ -106,6 +106,25 @@ public void RemoveLast()
_items[_itemsInUse] = default(T); // Release to GC
}
+ ///
+ /// Inserts the item at the specified index, moving the contents of the subsequent entries along by one.
+ ///
+ /// The index at which the value is to be inserted.
+ /// The value to insert.
+ public void InsertExpensive(int insertAtIndex, T value)
+ {
+ // Same expansion logic as elsewhere
+ if (_itemsInUse == _items.Length)
+ {
+ SetCapacity(_items.Length * 2, preserveContents: true);
+ }
+
+ Array.Copy(_items, insertAtIndex, _items, insertAtIndex + 1, _itemsInUse - insertAtIndex);
+ _itemsInUse++;
+
+ _items[insertAtIndex] = value;
+ }
+
///
/// Marks the array as empty, also shrinking the underlying storage if it was
/// not being used to near its full capacity.
diff --git a/src/Components/Components/src/RenderTree/RenderTreeBuilder.cs b/src/Components/Components/src/RenderTree/RenderTreeBuilder.cs
index 79290f8e072e..e5773a41b2cb 100644
--- a/src/Components/Components/src/RenderTree/RenderTreeBuilder.cs
+++ b/src/Components/Components/src/RenderTree/RenderTreeBuilder.cs
@@ -485,19 +485,10 @@ public void AddAttribute(int sequence, in RenderTreeFrame frame)
///
/// Adds frames representing multiple attributes with the same sequence number.
///
- /// The attribute value type.
/// An integer that represents the position of the instruction in the source code.
/// A collection of key-value pairs representing attributes.
- public void AddMultipleAttributes(int sequence, IEnumerable> attributes)
+ public void AddMultipleAttributes(int sequence, IEnumerable> attributes)
{
- // NOTE: The IEnumerable> is the simplest way to support a variety of
- // different types like IReadOnlyDictionary<>, Dictionary<>, and IDictionary<>.
- //
- // None of those types are contravariant, and since we want to support attributes having a value
- // of type object, the simplest thing to do is drop down to IEnumerable> which
- // is contravariant. This also gives us things like List> and KeyValuePair<>[]
- // for free even though we don't expect those types to be common.
-
// Calling this up-front just to make sure we validate before mutating anything.
AssertCanAddAttribute();
@@ -516,6 +507,34 @@ public void AddMultipleAttributes(int sequence, IEnumerable
+ ///
+ /// Indicates that the preceding attribute represents an event handler
+ /// whose execution updates the attribute with name .
+ ///
+ ///
+ /// This information is used by the rendering system to determine whether
+ /// to accept a value update for the other attribute when receiving a
+ /// call to the event handler.
+ ///
+ ///
+ /// The name of another attribute whose value can be updated when the event handler is executed.
+ public void SetUpdatesAttributeName(string updatesAttributeName)
+ {
+ if (_entries.Count == 0)
+ {
+ throw new InvalidOperationException("No preceding attribute frame exists.");
+ }
+
+ ref var prevFrame = ref _entries.Buffer[_entries.Count - 1];
+ if (prevFrame.FrameType != RenderTreeFrameType.Attribute)
+ {
+ throw new InvalidOperationException($"Incorrect frame type: '{prevFrame.FrameType}'");
+ }
+
+ prevFrame = prevFrame.WithAttributeEventUpdatesAttributeName(updatesAttributeName);
+ }
+
///
/// Appends a frame representing a child component.
///
@@ -690,6 +709,19 @@ public void Clear()
_seenAttributeNames?.Clear();
}
+ // internal because this should only be used during the post-event tree patching logic
+ // It's expensive because it involves copying all the subsequent memory in the array
+ internal void InsertAttributeExpensive(int insertAtIndex, int sequence, string attributeName, object attributeValue)
+ {
+ // Replicate the same attribute omission logic as used elsewhere
+ if ((attributeValue == null) || (attributeValue is bool boolValue && !boolValue))
+ {
+ return;
+ }
+
+ _entries.InsertExpensive(insertAtIndex, RenderTreeFrame.Attribute(sequence, attributeName, attributeValue));
+ }
+
///
/// Returns the values that have been appended.
///
diff --git a/src/Components/Components/src/RenderTree/RenderTreeDiffBuilder.cs b/src/Components/Components/src/RenderTree/RenderTreeDiffBuilder.cs
index baaf6097de20..e11b12bb24d1 100644
--- a/src/Components/Components/src/RenderTree/RenderTreeDiffBuilder.cs
+++ b/src/Components/Components/src/RenderTree/RenderTreeDiffBuilder.cs
@@ -11,6 +11,11 @@ internal static class RenderTreeDiffBuilder
{
enum DiffAction { Match, Insert, Delete }
+ // We use int.MinValue to signal this special case because (1) it would never be used by
+ // the Razor compiler or by accident in developer code, and (2) we know it will always
+ // hit the "old < new" code path during diffing so we only have to check for it in one place.
+ public const int SystemAddedAttributeSequenceNumber = int.MinValue;
+
public static RenderTreeDiff ComputeDiff(
Renderer renderer,
RenderBatchBuilder batchBuilder,
@@ -382,6 +387,21 @@ private static void AppendAttributeDiffEntriesForRange(
}
else if (oldSeq < newSeq)
{
+ if (oldSeq == SystemAddedAttributeSequenceNumber)
+ {
+ // This special sequence number means that we can't rely on the sequence numbers
+ // for matching and are forced to fall back on the dictionary-based join in order
+ // to produce an optimal diff. If we didn't we'd likely produce a diff that removes
+ // and then re-adds the same attribute.
+ // We use the special sequence number to signal it because it adds almost no cost
+ // to check for it only in this one case.
+ AppendAttributeDiffEntriesForRangeSlow(
+ ref diffContext,
+ oldStartIndex, oldEndIndexExcl,
+ newStartIndex, newEndIndexExcl);
+ return;
+ }
+
// An attribute was removed compared to the old sequence.
RemoveOldFrame(ref diffContext, oldStartIndex);
@@ -661,13 +681,17 @@ private static void AppendDiffEntriesForAttributeFrame(
var valueChanged = !Equals(oldFrame.AttributeValue, newFrame.AttributeValue);
if (valueChanged)
{
+ InitializeNewAttributeFrame(ref diffContext, ref newFrame);
+ var referenceFrameIndex = diffContext.ReferenceFrames.Append(newFrame);
+ diffContext.Edits.Append(RenderTreeEdit.SetAttribute(diffContext.SiblingIndex, referenceFrameIndex));
+
+ // If we're replacing an old event handler ID with a new one, register the old one for disposal,
+ // plus keep track of the old->new chain until the old one is fully disposed
if (oldFrame.AttributeEventHandlerId > 0)
{
+ diffContext.Renderer.TrackReplacedEventHandlerId(oldFrame.AttributeEventHandlerId, newFrame.AttributeEventHandlerId);
diffContext.BatchBuilder.DisposedEventHandlerIds.Append(oldFrame.AttributeEventHandlerId);
}
- InitializeNewAttributeFrame(ref diffContext, ref newFrame);
- var referenceFrameIndex = diffContext.ReferenceFrames.Append(newFrame);
- diffContext.Edits.Append(RenderTreeEdit.SetAttribute(diffContext.SiblingIndex, referenceFrameIndex));
}
else if (oldFrame.AttributeEventHandlerId > 0)
{
diff --git a/src/Components/Components/src/RenderTree/RenderTreeFrame.cs b/src/Components/Components/src/RenderTree/RenderTreeFrame.cs
index 7bf18c150dea..0226cfd9d7c4 100644
--- a/src/Components/Components/src/RenderTree/RenderTreeFrame.cs
+++ b/src/Components/Components/src/RenderTree/RenderTreeFrame.cs
@@ -104,6 +104,14 @@ public readonly struct RenderTreeFrame
///
[FieldOffset(24)] public readonly object AttributeValue;
+ ///
+ /// If the property equals ,
+ /// and the attribute represents an event handler, gets the name of another attribute whose value
+ /// can be updated to represent the UI state prior to executing the event handler. This is
+ /// primarily used in two-way bindings.
+ ///
+ [FieldOffset(32)] public readonly string AttributeEventUpdatesAttributeName;
+
// --------------------------------------------------------------------------------
// RenderTreeFrameType.Component
// --------------------------------------------------------------------------------
@@ -259,7 +267,7 @@ private RenderTreeFrame(int sequence, bool isMarkup, string textOrMarkup)
}
// Attribute constructor
- private RenderTreeFrame(int sequence, string attributeName, object attributeValue, int attributeEventHandlerId)
+ private RenderTreeFrame(int sequence, string attributeName, object attributeValue, int attributeEventHandlerId, string attributeEventUpdatesAttributeName)
: this()
{
FrameType = RenderTreeFrameType.Attribute;
@@ -267,6 +275,7 @@ private RenderTreeFrame(int sequence, string attributeName, object attributeValu
AttributeName = attributeName;
AttributeValue = attributeValue;
AttributeEventHandlerId = attributeEventHandlerId;
+ AttributeEventUpdatesAttributeName = attributeEventUpdatesAttributeName;
}
// Element reference capture constructor
@@ -299,7 +308,7 @@ internal static RenderTreeFrame Markup(int sequence, string markupContent)
=> new RenderTreeFrame(sequence, isMarkup: true, textOrMarkup: markupContent);
internal static RenderTreeFrame Attribute(int sequence, string name, object value)
- => new RenderTreeFrame(sequence, attributeName: name, attributeValue: value, attributeEventHandlerId: 0);
+ => new RenderTreeFrame(sequence, attributeName: name, attributeValue: value, attributeEventHandlerId: 0, attributeEventUpdatesAttributeName: null);
internal static RenderTreeFrame ChildComponent(int sequence, Type componentType)
=> new RenderTreeFrame(sequence, componentSubtreeLength: 0, componentType, null, null);
@@ -323,13 +332,19 @@ internal RenderTreeFrame WithComponentSubtreeLength(int componentSubtreeLength)
=> new RenderTreeFrame(Sequence, componentSubtreeLength: componentSubtreeLength, ComponentType, ComponentState, ComponentKey);
internal RenderTreeFrame WithAttributeSequence(int sequence)
- => new RenderTreeFrame(sequence, attributeName: AttributeName, AttributeValue, AttributeEventHandlerId);
+ => new RenderTreeFrame(sequence, attributeName: AttributeName, AttributeValue, AttributeEventHandlerId, AttributeEventUpdatesAttributeName);
internal RenderTreeFrame WithComponent(ComponentState componentState)
=> new RenderTreeFrame(Sequence, componentSubtreeLength: ComponentSubtreeLength, ComponentType, componentState, ComponentKey);
internal RenderTreeFrame WithAttributeEventHandlerId(int eventHandlerId)
- => new RenderTreeFrame(Sequence, attributeName: AttributeName, AttributeValue, eventHandlerId);
+ => new RenderTreeFrame(Sequence, attributeName: AttributeName, AttributeValue, eventHandlerId, AttributeEventUpdatesAttributeName);
+
+ internal RenderTreeFrame WithAttributeValue(object attributeValue)
+ => new RenderTreeFrame(Sequence, attributeName: AttributeName, attributeValue, AttributeEventHandlerId, AttributeEventUpdatesAttributeName);
+
+ internal RenderTreeFrame WithAttributeEventUpdatesAttributeName(string attributeUpdatesAttributeName)
+ => new RenderTreeFrame(Sequence, attributeName: AttributeName, AttributeValue, AttributeEventHandlerId, attributeUpdatesAttributeName);
internal RenderTreeFrame WithRegionSubtreeLength(int regionSubtreeLength)
=> new RenderTreeFrame(Sequence, regionSubtreeLength: regionSubtreeLength);
diff --git a/src/Components/Components/src/Rendering/EventFieldInfo.cs b/src/Components/Components/src/Rendering/EventFieldInfo.cs
new file mode 100644
index 000000000000..391844405f4f
--- /dev/null
+++ b/src/Components/Components/src/Rendering/EventFieldInfo.cs
@@ -0,0 +1,23 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+namespace Microsoft.AspNetCore.Components.Rendering
+{
+ ///
+ /// Information supplied with an event notification that can be used to update an existing
+ /// render tree to match the latest UI state when a form field has mutated. To determine
+ /// which field has been mutated, the renderer matches it based on the event handler ID.
+ ///
+ public class EventFieldInfo
+ {
+ ///
+ /// Identifies the component whose render tree contains the affected form field.
+ ///
+ public int ComponentId { get; set; }
+
+ ///
+ /// Specifies the form field's new value.
+ ///
+ public object FieldValue { get; set; }
+ }
+}
diff --git a/src/Components/Components/src/Rendering/RenderTreeUpdater.cs b/src/Components/Components/src/Rendering/RenderTreeUpdater.cs
new file mode 100644
index 000000000000..5168ba393606
--- /dev/null
+++ b/src/Components/Components/src/Rendering/RenderTreeUpdater.cs
@@ -0,0 +1,113 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using Microsoft.AspNetCore.Components.RenderTree;
+
+namespace Microsoft.AspNetCore.Components.Rendering
+{
+ internal class RenderTreeUpdater
+ {
+ public static void UpdateToMatchClientState(RenderTreeBuilder renderTreeBuilder, int eventHandlerId, object newFieldValue)
+ {
+ // We only allow the client to supply string or bool currently, since those are the only kinds of
+ // values we output on attributes that go to the client
+ if (!(newFieldValue is string || newFieldValue is bool))
+ {
+ return;
+ }
+
+ // Find the element that contains the event handler
+ var frames = renderTreeBuilder.GetFrames();
+ var framesArray = frames.Array;
+ var framesLength = frames.Count;
+ var closestElementFrameIndex = -1;
+ for (var frameIndex = 0; frameIndex < framesLength; frameIndex++)
+ {
+ ref var frame = ref framesArray[frameIndex];
+ switch (frame.FrameType)
+ {
+ case RenderTreeFrameType.Element:
+ closestElementFrameIndex = frameIndex;
+ break;
+ case RenderTreeFrameType.Attribute:
+ if (frame.AttributeEventHandlerId == eventHandlerId)
+ {
+ if (!string.IsNullOrEmpty(frame.AttributeEventUpdatesAttributeName))
+ {
+ UpdateFrameToMatchClientState(
+ renderTreeBuilder,
+ framesArray,
+ closestElementFrameIndex,
+ frame.AttributeEventUpdatesAttributeName,
+ newFieldValue);
+ }
+
+ // Whether or not we did update the frame, that was the one that matches
+ // the event handler ID, so no need to look any further
+ return;
+ }
+ break;
+ }
+ }
+ }
+
+ private static void UpdateFrameToMatchClientState(RenderTreeBuilder renderTreeBuilder, RenderTreeFrame[] framesArray, int elementFrameIndex, string attributeName, object attributeValue)
+ {
+ // Find the attribute frame
+ ref var elementFrame = ref framesArray[elementFrameIndex];
+ var elementSubtreeEndIndexExcl = elementFrameIndex + elementFrame.ElementSubtreeLength;
+ for (var attributeFrameIndex = elementFrameIndex + 1; attributeFrameIndex < elementSubtreeEndIndexExcl; attributeFrameIndex++)
+ {
+ ref var attributeFrame = ref framesArray[attributeFrameIndex];
+ if (attributeFrame.FrameType != RenderTreeFrameType.Attribute)
+ {
+ // We're now looking at the descendants not attributes, so the search is over
+ break;
+ }
+
+ if (attributeFrame.AttributeName == attributeName)
+ {
+ // Found an existing attribute we can update
+ attributeFrame = attributeFrame.WithAttributeValue(attributeValue);
+ return;
+ }
+ }
+
+ // If we get here, we didn't find the desired attribute, so we have to insert a new frame for it
+ var insertAtIndex = elementFrameIndex + 1;
+ renderTreeBuilder.InsertAttributeExpensive(insertAtIndex, RenderTreeDiffBuilder.SystemAddedAttributeSequenceNumber, attributeName, attributeValue);
+ framesArray = renderTreeBuilder.GetFrames().Array; // Refresh in case it mutated due to the expansion
+
+ // Update subtree length for this and all ancestor containers
+ // Ancestors can only be regions or other elements, since components can't "contain" elements inline
+ // We only have to walk backwards, since later entries in the frames array can't contain an earlier one
+ for (var otherFrameIndex = elementFrameIndex; otherFrameIndex >= 0; otherFrameIndex--)
+ {
+ ref var otherFrame = ref framesArray[otherFrameIndex];
+ switch (otherFrame.FrameType)
+ {
+ case RenderTreeFrameType.Element:
+ {
+ var otherFrameSubtreeLength = otherFrame.ElementSubtreeLength;
+ var otherFrameEndIndexExcl = otherFrameIndex + otherFrameSubtreeLength;
+ if (otherFrameEndIndexExcl > elementFrameIndex) // i.e., contains the element we're inserting into
+ {
+ otherFrame = otherFrame.WithElementSubtreeLength(otherFrameSubtreeLength + 1);
+ }
+ break;
+ }
+ case RenderTreeFrameType.Region:
+ {
+ var otherFrameSubtreeLength = otherFrame.RegionSubtreeLength;
+ var otherFrameEndIndexExcl = otherFrameIndex + otherFrameSubtreeLength;
+ if (otherFrameEndIndexExcl > elementFrameIndex) // i.e., contains the element we're inserting into
+ {
+ otherFrame = otherFrame.WithRegionSubtreeLength(otherFrameSubtreeLength + 1);
+ }
+ break;
+ }
+ }
+ }
+ }
+ }
+}
diff --git a/src/Components/Components/src/Rendering/Renderer.cs b/src/Components/Components/src/Rendering/Renderer.cs
index 88b9f71e09d1..8d7753d0ff85 100644
--- a/src/Components/Components/src/Rendering/Renderer.cs
+++ b/src/Components/Components/src/Rendering/Renderer.cs
@@ -20,6 +20,7 @@ public abstract class Renderer : IDisposable
private readonly Dictionary _componentStateById = new Dictionary();
private readonly RenderBatchBuilder _batchBuilder = new RenderBatchBuilder();
private readonly Dictionary _eventBindings = new Dictionary();
+ private readonly Dictionary _eventHandlerIdReplacements = new Dictionary();
private readonly IDispatcher _dispatcher;
private int _nextComponentId = 0; // TODO: change to 'long' when Mono .NET->JS interop supports it
@@ -205,11 +206,12 @@ private ComponentState AttachAndInitComponent(IComponent component, int parentCo
///
/// The value from the original event attribute.
/// Arguments to be passed to the event handler.
+ /// Information that the renderer can use to update the state of the existing render tree to match the UI.
///
/// A which will complete once all asynchronous processing related to the event
/// has completed.
///
- public virtual Task DispatchEventAsync(int eventHandlerId, UIEventArgs eventArgs)
+ public virtual Task DispatchEventAsync(int eventHandlerId, EventFieldInfo fieldInfo, UIEventArgs eventArgs)
{
EnsureSynchronizationContext();
@@ -218,6 +220,12 @@ public virtual Task DispatchEventAsync(int eventHandlerId, UIEventArgs eventArgs
throw new ArgumentException($"There is no event handler with ID {eventHandlerId}");
}
+ if (fieldInfo != null)
+ {
+ var latestEquivalentEventHandlerId = FindLatestEventHandlerIdInChain(eventHandlerId);
+ UpdateRenderTreeToMatchClientState(latestEquivalentEventHandlerId, fieldInfo);
+ }
+
Task task = null;
try
{
@@ -401,6 +409,24 @@ protected internal virtual void AddToRenderQueue(int componentId, RenderFragment
}
}
+ internal void TrackReplacedEventHandlerId(int oldEventHandlerId, int newEventHandlerId)
+ {
+ // Tracking the chain of old->new replacements allows us to interpret incoming EventFieldInfo
+ // values even if they refer to an event handler ID that's since been superseded. This is essential
+ // for tree patching to work in an async environment.
+ _eventHandlerIdReplacements.Add(oldEventHandlerId, newEventHandlerId);
+ }
+
+ private int FindLatestEventHandlerIdInChain(int eventHandlerId)
+ {
+ while (_eventHandlerIdReplacements.TryGetValue(eventHandlerId, out var replacementEventHandlerId))
+ {
+ eventHandlerId = replacementEventHandlerId;
+ }
+
+ return eventHandlerId;
+ }
+
private void EnsureSynchronizationContext()
{
// When the IDispatcher is a synchronization context
@@ -613,7 +639,9 @@ private void RemoveEventHandlerIds(ArrayRange eventHandlerIds, Task afterTa
var count = eventHandlerIds.Count;
for (var i = 0; i < count; i++)
{
- _eventBindings.Remove(array[i]);
+ var eventHandlerIdToRemove = array[i];
+ _eventBindings.Remove(eventHandlerIdToRemove);
+ _eventHandlerIdReplacements.Remove(eventHandlerIdToRemove);
}
}
else
@@ -662,6 +690,18 @@ private async Task GetErrorHandledTask(Task taskToHandle)
}
}
+ private void UpdateRenderTreeToMatchClientState(int eventHandlerId, EventFieldInfo fieldInfo)
+ {
+ var componentState = GetOptionalComponentState(fieldInfo.ComponentId);
+ if (componentState != null)
+ {
+ RenderTreeUpdater.UpdateToMatchClientState(
+ componentState.CurrrentRenderTree,
+ eventHandlerId,
+ fieldInfo.FieldValue);
+ }
+ }
+
///
/// Releases all resources currently used by this instance.
///
diff --git a/src/Components/Components/src/Routing/RouteContext.cs b/src/Components/Components/src/Routing/RouteContext.cs
index 4830249eccea..7de5f3c61552 100644
--- a/src/Components/Components/src/Routing/RouteContext.cs
+++ b/src/Components/Components/src/Routing/RouteContext.cs
@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
@@ -15,6 +15,11 @@ public RouteContext(string path)
// This is a simplification. We are assuming there are no paths like /a//b/. A proper routing
// implementation would be more sophisticated.
Segments = path.Trim('/').Split(Separator, StringSplitOptions.RemoveEmptyEntries);
+ // Individual segments are URL-decoded in order to support arbitrary characters, assuming UTF-8 encoding.
+ for (int i = 0; i < Segments.Length; i++)
+ {
+ Segments[i] = Uri.UnescapeDataString(Segments[i]);
+ }
}
public string[] Segments { get; }
@@ -23,4 +28,4 @@ public RouteContext(string path)
public IDictionary Parameters { get; set; }
}
-}
\ No newline at end of file
+}
diff --git a/src/Components/Components/src/UIEventArgs.cs b/src/Components/Components/src/UIEventArgs.cs
index 8115a2808bb4..3da5e6bc22c3 100644
--- a/src/Components/Components/src/UIEventArgs.cs
+++ b/src/Components/Components/src/UIEventArgs.cs
@@ -41,79 +41,13 @@ public class UIClipboardEventArgs : UIEventArgs
///
/// Supplies information about an drag event that is being raised.
///
- public class UIDragEventArgs : UIEventArgs
+ public class UIDragEventArgs : UIMouseEventArgs
{
- ///
- /// A count of consecutive clicks that happened in a short amount of time, incremented by one.
- ///
- public long Detail { get; set; }
-
///
/// The data that underlies a drag-and-drop operation, known as the drag data store.
/// See .
///
public DataTransfer DataTransfer { get; set; }
-
- ///
- /// The X coordinate of the mouse pointer in global (screen) coordinates.
- ///
- public long ScreenX { get; set; }
-
- ///
- /// The Y coordinate of the mouse pointer in global (screen) coordinates.
- ///
- public long ScreenY { get; set; }
-
- ///
- /// The X coordinate of the mouse pointer in local (DOM content) coordinates.
- ///
- public long ClientX { get; set; }
-
- ///
- /// The Y coordinate of the mouse pointer in local (DOM content) coordinates.
- ///
- public long ClientY { get; set; }
-
- ///
- /// The button number that was pressed when the mouse event was fired:
- /// Left button=0,
- /// middle button=1 (if present),
- /// right button=2.
- /// For mice configured for left handed use in which the button actions are reversed the values are instead read from right to left.
- ///
- public long Button { get; set; }
-
- ///
- /// The buttons being pressed when the mouse event was fired:
- /// Left button=1,
- /// Right button=2,
- /// Middle (wheel) button=4,
- /// 4th button (typically, "Browser Back" button)=8,
- /// 5th button (typically, "Browser Forward" button)=16.
- /// If two or more buttons are pressed, returns the logical sum of the values.
- /// E.g., if Left button and Right button are pressed, returns 3 (=1 | 2).
- ///
- public long Buttons { get; set; }
-
- ///
- /// true if the control key was down when the event was fired. false otherwise.
- ///
- public bool CtrlKey { get; set; }
-
- ///
- /// true if the shift key was down when the event was fired. false otherwise.
- ///
- public bool ShiftKey { get; set; }
-
- ///
- /// true if the alt key was down when the event was fired. false otherwise.
- ///
- public bool AltKey { get; set; }
-
- ///
- /// true if the meta key was down when the event was fired. false otherwise.
- ///
- public bool MetaKey { get; set; }
}
///
@@ -268,22 +202,22 @@ public class UIMouseEventArgs : UIEventArgs
///
/// The X coordinate of the mouse pointer in global (screen) coordinates.
///
- public long ScreenX { get; set; }
+ public double ScreenX { get; set; }
///
/// The Y coordinate of the mouse pointer in global (screen) coordinates.
///
- public long ScreenY { get; set; }
+ public double ScreenY { get; set; }
///
/// The X coordinate of the mouse pointer in local (DOM content) coordinates.
///
- public long ClientX { get; set; }
+ public double ClientX { get; set; }
///
/// The Y coordinate of the mouse pointer in local (DOM content) coordinates.
///
- public long ClientY { get; set; }
+ public double ClientY { get; set; }
///
/// The button number that was pressed when the mouse event was fired:
@@ -465,34 +399,34 @@ public class UITouchPoint
///
/// The X coordinate of the touch point relative to the left edge of the screen.
///
- public long ScreenX { get; set; }
+ public double ScreenX { get; set; }
///
/// The Y coordinate of the touch point relative to the top edge of the screen.
///
- public long ScreenY { get; set; }
+ public double ScreenY { get; set; }
///
/// The X coordinate of the touch point relative to the left edge of the browser viewport, not including any scroll offset.
///
- public long ClientX { get; set; }
+ public double ClientX { get; set; }
///
/// The Y coordinate of the touch point relative to the top edge of the browser viewport, not including any scroll offset.
///
- public long ClientY { get; set; }
+ public double ClientY { get; set; }
///
/// The X coordinate of the touch point relative to the left edge of the document.
/// Unlike , this value includes the horizontal scroll offset, if any.
///
- public long PageX { get; set; }
+ public double PageX { get; set; }
///
/// The Y coordinate of the touch point relative to the top of the document.
/// Unlike , this value includes the vertical scroll offset, if any.
///
- public long PageY { get; set; }
+ public double PageY { get; set; }
}
///
diff --git a/src/Components/Components/test/EventCallbackFactoryBinderExtensionsTest.cs b/src/Components/Components/test/EventCallbackFactoryBinderExtensionsTest.cs
index 84bfc725074e..831734f46073 100644
--- a/src/Components/Components/test/EventCallbackFactoryBinderExtensionsTest.cs
+++ b/src/Components/Components/test/EventCallbackFactoryBinderExtensionsTest.cs
@@ -28,6 +28,23 @@ public async Task CreateBinder_SwallowsConversionException()
Assert.Equal(1, component.Count);
}
+ [Fact]
+ public async Task CreateBinder_IfConverterThrows_ConvertsEmptyStringToDefault()
+ {
+ // Arrange
+ var value = 17;
+ var component = new EventCountingComponent();
+ Action setter = (_) => value = _;
+
+ var binder = EventCallback.Factory.CreateBinder(component, setter, value);
+
+ // Act
+ await binder.InvokeAsync(new UIChangeEventArgs() { Value = string.Empty, });
+
+ Assert.Equal(0, value); // Calls setter to apply default value for this type
+ Assert.Equal(1, component.Count);
+ }
+
[Fact]
public async Task CreateBinder_ThrowsSetterException()
{
diff --git a/src/Components/Components/test/RenderTreeBuilderTest.cs b/src/Components/Components/test/RenderTreeBuilderTest.cs
index c92ee6365800..bfd73e040dd1 100644
--- a/src/Components/Components/test/RenderTreeBuilderTest.cs
+++ b/src/Components/Components/test/RenderTreeBuilderTest.cs
@@ -254,7 +254,7 @@ public void CanAddMultipleAttributes_AllowsNull()
// Act
builder.OpenElement(0, "myelement");
- builder.AddMultipleAttributes