sprotty
Version:
A next-gen framework for graphical views
73 lines • 3.38 kB
JavaScript
;
/********************************************************************************
* Copyright (c) 2017-2018 TypeFox and others.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the Eclipse
* Public License v. 2.0 are satisfied: GNU General Public License, version 2
* with the GNU Classpath Exception which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
********************************************************************************/
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ViewerCache = void 0;
const inversify_1 = require("inversify");
const types_1 = require("../types");
const animation_frame_syncer_1 = require("../animations/animation-frame-syncer");
/**
* Updating the view is rather expensive, and it doesn't make sense to calculate
* more then one update per animation (rendering) frame. So this class batches
* all incoming model changes and only renders the last one when the next animation
* frame comes.
*/
let ViewerCache = class ViewerCache {
update(model, cause) {
if (cause !== undefined) {
// Forward the update immediately in order to pass the cause action
this.delegate.update(model, cause);
this.cachedModel = undefined;
}
else {
const isCacheEmpty = this.cachedModel === undefined;
this.cachedModel = model;
if (isCacheEmpty) {
this.scheduleUpdate();
}
}
}
scheduleUpdate() {
this.syncer.onEndOfNextFrame(() => {
if (this.cachedModel) {
this.delegate.update(this.cachedModel);
this.cachedModel = undefined;
}
});
}
};
exports.ViewerCache = ViewerCache;
__decorate([
(0, inversify_1.inject)(types_1.TYPES.IViewer),
__metadata("design:type", Object)
], ViewerCache.prototype, "delegate", void 0);
__decorate([
(0, inversify_1.inject)(types_1.TYPES.AnimationFrameSyncer),
__metadata("design:type", animation_frame_syncer_1.AnimationFrameSyncer)
], ViewerCache.prototype, "syncer", void 0);
exports.ViewerCache = ViewerCache = __decorate([
(0, inversify_1.injectable)()
], ViewerCache);
//# sourceMappingURL=viewer-cache.js.map