angular-duo-pane
Version:
A library for Angular projects to easily add a two pane view for desktops, foldables and dual screen devices.
149 lines • 19.7 kB
JavaScript
var DuoPaneInformationService_1;
import { __awaiter, __decorate } from "tslib";
import { Injectable } from '@angular/core';
import { Segment } from '../models/Segment';
import * as i0 from "@angular/core";
let DuoPaneInformationService = DuoPaneInformationService_1 = class DuoPaneInformationService {
constructor() {
this.Spanning = 'none';
this.FoldSize = 0;
this.BrowserShellSize = 0;
this.Segments = null;
this.needsDispatch = false;
this.Spanning = sessionStorage.getItem(`${DuoPaneInformationService_1.ns}-spanning`) || 'none';
this.FoldSize = +sessionStorage.getItem(`${DuoPaneInformationService_1.ns}-fold-size`) || 0;
this.BrowserShellSize = +sessionStorage.getItem(`${DuoPaneInformationService_1.ns}-browser-shell-size`) || 0;
this.eventTarget = document.createDocumentFragment();
// Web-based emulator runs this polyfill in an iframe, we need to
// communicate emulator state changes to the site.
// Should only be registered once (in CSS or JS polyfill, not both).
window.addEventListener('message', ev => {
if (ev.data.action === 'update') {
Object.assign(this, ev.data.value);
}
});
window.addEventListener('resize', () => this.debounce(this.invalidate(), 200));
}
addEventListener(type, listener, options) {
this.eventTarget.addEventListener(type, listener, options);
}
removeEventListener(type, callback, options) {
this.eventTarget.removeEventListener(type, callback, options);
}
dispatchEvent(event) {
if (event.type !== 'change') {
return;
}
const methodName = `on${event.type}`;
if (typeof this[methodName] === 'function') {
this[methodName](event);
}
return this.eventTarget.dispatchEvent(event);
}
get foldSize() {
return this.FoldSize;
}
set foldSize(foldSize) {
sessionStorage.setItem(`${DuoPaneInformationService_1.ns}-fold-size`, foldSize.toString());
this.FoldSize = foldSize;
this.invalidate();
}
get browserShellSize() {
return this.BrowserShellSize;
}
set browserShellSize(browserShellSize) {
sessionStorage.setItem(`${DuoPaneInformationService_1.ns}-browser-shell-size`, browserShellSize.toString());
this.BrowserShellSize = browserShellSize;
this.invalidate();
}
get spanning() {
return this.Spanning;
}
set spanning(spanning) {
sessionStorage.setItem(`${DuoPaneInformationService_1.ns}-spanning`, spanning);
this.Spanning = spanning;
this.invalidate();
}
set segments(segments) {
this.Segments = segments;
}
getTwoLargestSegments() {
const segments = this.windowSegments;
if (segments.length > 2) {
const twoLargestSegments = [null, null];
let largestSize = 0;
for (const segment of segments) {
const segmentSize = segment.height * segment.width;
if (segmentSize >= largestSize) {
largestSize = segmentSize;
twoLargestSegments[0] = twoLargestSegments[1];
twoLargestSegments[1] = segment;
}
}
return twoLargestSegments;
}
else {
return segments;
}
}
get windowSegments() {
// TODO: replace with window.getWindowSegments() once it is a web standard
if (this.Segments !== null && this.Segments.length > 0) {
return this.Segments;
}
if (this.spanning === 'none') {
return [
new Segment(window.innerWidth, window.innerHeight, 0, 0)
];
}
if (this.spanning === 'single-fold-horizontal') {
const screenCenter = (window.innerHeight - this.browserShellSize) / 2;
const width = window.innerWidth;
return [
new Segment(width, screenCenter - this.foldSize / 2, 0, 0),
new Segment(width, this.foldSize, screenCenter - this.foldSize / 2, 0),
new Segment(width, window.innerHeight, screenCenter + this.foldSize / 2, 0)
];
}
if (this.spanning === 'single-fold-vertical') {
const width = window.innerWidth / 2 - this.foldSize / 2;
const height = window.innerHeight;
return [
new Segment(width, height, 0, 0),
new Segment(this.foldSize, height, 0, width),
new Segment(width, height, 0, window.innerWidth / 2 + this.foldSize / 2)
];
}
}
/**
* Returns a function that won't call `fn` if it was invoked at a
* faster interval than `wait`.
*/
debounce(fn, wait) {
let timeout;
return () => {
clearTimeout(timeout);
timeout = setTimeout(function () {
fn.apply(this, arguments);
}, wait);
};
}
invalidate() {
return __awaiter(this, void 0, void 0, function* () {
if (!this.needsDispatch) {
this.needsDispatch = true;
this.needsDispatch = yield Promise.resolve(false);
this.dispatchEvent(new Event('change'));
}
});
}
};
DuoPaneInformationService.ns = '__foldables__';
DuoPaneInformationService.ɵprov = i0.ɵɵdefineInjectable({ factory: function DuoPaneInformationService_Factory() { return new DuoPaneInformationService(); }, token: DuoPaneInformationService, providedIn: "root" });
DuoPaneInformationService = DuoPaneInformationService_1 = __decorate([
Injectable({
providedIn: 'root'
})
], DuoPaneInformationService);
export { DuoPaneInformationService };
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{ Injectable } from '@angular/core';\nimport { SpanningMode } from '../models/SpanningMode';\nimport { ISegment } from '../models/ISegment';\nimport { Segment } from '../models/Segment';\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class DuoPaneInformationService {\n\n  public static readonly ns = '__foldables__';\n  private Spanning: SpanningMode = 'none';\n  private FoldSize = 0;\n  private BrowserShellSize = 0;\n  private Segments: ISegment[] = null;\n  private needsDispatch = false;\n  private eventTarget: DocumentFragment;\n\n\n  constructor() {\n\n    this.Spanning = sessionStorage.getItem(`${DuoPaneInformationService.ns}-spanning`) as SpanningMode || 'none';\n    this.FoldSize = +sessionStorage.getItem(`${DuoPaneInformationService.ns}-fold-size`) || 0;\n    this.BrowserShellSize = +sessionStorage.getItem(`${DuoPaneInformationService.ns}-browser-shell-size`) || 0;\n\n    this.eventTarget = document.createDocumentFragment();\n\n    // Web-based emulator runs this polyfill in an iframe, we need to\n    // communicate emulator state changes to the site.\n    // Should only be registered once (in CSS or JS polyfill, not both).\n    window.addEventListener('message', ev => {\n      if (ev.data.action === 'update') {\n        Object.assign(this, ev.data.value);\n      }\n    });\n    window.addEventListener('resize', () => this.debounce(this.invalidate(), 200));\n\n  }\n\n\n  public addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void {\n    this.eventTarget.addEventListener(type, listener, options);\n  }\n\n  public removeEventListener(type: string, callback: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void {\n    this.eventTarget.removeEventListener(type, callback, options);\n  }\n\n\n\n  public dispatchEvent(event: Event): boolean {\n    if (event.type !== 'change') {\n      return;\n    }\n    const methodName = `on${event.type}`;\n    if (typeof this[methodName] === 'function') {\n      this[methodName](event);\n    }\n    return this.eventTarget.dispatchEvent(event);\n  }\n\n  public get foldSize(): number {\n    return this.FoldSize;\n  }\n\n  public set foldSize(foldSize: number) {\n    sessionStorage.setItem(`${DuoPaneInformationService.ns}-fold-size`, foldSize.toString());\n    this.FoldSize = foldSize;\n    this.invalidate();\n\n  }\n\n  public get browserShellSize(): number {\n    return this.BrowserShellSize;\n  }\n\n  public set browserShellSize(browserShellSize: number) {\n    sessionStorage.setItem(`${DuoPaneInformationService.ns}-browser-shell-size`, browserShellSize.toString());\n    this.BrowserShellSize = browserShellSize;\n    this.invalidate();\n  }\n\n  public get spanning(): SpanningMode {\n    return this.Spanning;\n  }\n\n  public set spanning(spanning: SpanningMode) {\n    sessionStorage.setItem(`${DuoPaneInformationService.ns}-spanning`, spanning);\n    this.Spanning = spanning;\n    this.invalidate();\n  }\n\n\n  public set segments(segments: ISegment[]) {\n    this.Segments = segments;\n  }\n\n  public getTwoLargestSegments(): ISegment[] {\n    const segments = this.windowSegments;\n    if (segments.length > 2) {\n      const twoLargestSegments = [null, null];\n      let largestSize = 0;\n      for (const segment of segments) {\n        const segmentSize = segment.height * segment.width;\n        if (segmentSize >= largestSize) {\n          largestSize = segmentSize;\n          twoLargestSegments[0] = twoLargestSegments[1];\n          twoLargestSegments[1] = segment;\n        }\n      }\n      return twoLargestSegments;\n    } else {\n      return segments;\n    }\n  }\n\n  public get windowSegments(): ISegment[] {\n    // TODO: replace with window.getWindowSegments() once it is a web standard\n    if (this.Segments !== null && this.Segments.length > 0) {\n      return this.Segments;\n    }\n    if (this.spanning === 'none') {\n      return [\n        new Segment(window.innerWidth, window.innerHeight, 0, 0)\n      ];\n    }\n    if (this.spanning === 'single-fold-horizontal') {\n      const screenCenter = (window.innerHeight - this.browserShellSize) / 2;\n      const width = window.innerWidth;\n      return [\n        new Segment(width, screenCenter - this.foldSize / 2, 0, 0),\n        new Segment(width, this.foldSize, screenCenter - this.foldSize / 2, 0),\n        new Segment(width, window.innerHeight, screenCenter + this.foldSize / 2, 0)\n      ];\n    }\n    if (this.spanning === 'single-fold-vertical') {\n      const width = window.innerWidth / 2 - this.foldSize / 2;\n      const height = window.innerHeight;\n      return [\n        new Segment(width, height, 0, 0),\n        new Segment(this.foldSize, height, 0, width),\n        new Segment(width, height, 0, window.innerWidth / 2 + this.foldSize / 2)\n      ];\n    }\n  }\n\n\n  /**\n   * Returns a function that won't call `fn` if it was invoked at a\n   * faster interval than `wait`.\n   */\n  public debounce(fn: any, wait: number) {\n    let timeout;\n    return () => {\n      clearTimeout(timeout);\n      timeout = setTimeout(function() {\n        fn.apply(this, arguments);\n      }, wait);\n    };\n  }\n  public async invalidate() {\n    if (!this.needsDispatch) {\n      this.needsDispatch = true;\n      this.needsDispatch = await Promise.resolve(false);\n      this.dispatchEvent(new Event('change'));\n    }\n  }\n\n}\n"]}