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26 changes: 26 additions & 0 deletions
26
Uno.Gallery/Uno.Gallery.Wasm/LocationHrefNavigationHandler.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| using Uno.Foundation; | ||
|
|
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| namespace Uno.Gallery.Wasm | ||
| { | ||
| public class LocationHrefNavigationHandler | ||
| { | ||
| public static string CurrentLocationHref | ||
| { | ||
| get | ||
| { | ||
| const string command = "Uno.Gallery.Wasm.LocationHrefNavigationHandler.getCurrentLocationHref()"; | ||
| var locationHref = WebAssemblyRuntime.InvokeJS(command); | ||
| return locationHref; | ||
| } | ||
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|
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| set | ||
| { | ||
| var escaped = WebAssemblyRuntime.EscapeJs(value); | ||
| var command = | ||
| "Uno.Gallery.Wasm.LocationHrefNavigationHandler.setCurrentLocationHref(\"" + escaped + "\")"; | ||
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| WebAssemblyRuntime.InvokeJS(command); | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| namespace Uno.Gallery.Wasm { | ||
| export class LocationHrefNavigationHandler { | ||
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| private static currentLocationHref: string; | ||
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| public static getCurrentLocationHref(): string { | ||
| return window.location.href; | ||
| } | ||
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| public static setCurrentLocationHref(locationHref: string): string { | ||
| window.location.href = locationHref; | ||
| this.currentLocationHref = window.location.href; | ||
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| return "ok"; | ||
| } | ||
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| private static subscribed: boolean = false; | ||
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| public static subscribeToLocationHrefChanged(): string { | ||
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| if (this.subscribed) { | ||
| return "already subscribed"; | ||
| } | ||
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| this.subscribed = true; | ||
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| this.currentLocationHref = this.getCurrentLocationHref(); | ||
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| window.addEventListener( | ||
| "hashchange", | ||
| _ => this.notifyLocationHrefChanged(), | ||
| false); | ||
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| return "ok"; | ||
| } | ||
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| private static notifyLocationHrefChangedMethod: any; | ||
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| private static notifyLocationHrefChanged() { | ||
| const newLocationHref: string = this.getCurrentLocationHref(); | ||
| if (newLocationHref === this.currentLocationHref) { | ||
| return; // nothing to do | ||
| } | ||
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| this.currentLocationHref = newLocationHref; | ||
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| this.initializeMethods(); | ||
| const newLocationHrefStr = MonoRuntime.mono_string(newLocationHref); | ||
| MonoRuntime.call_method(this.notifyLocationHrefChangedMethod, null, [newLocationHrefStr]); | ||
| } | ||
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| private static initializeMethods(): void { | ||
| if (this.notifyLocationHrefChangedMethod) { | ||
| return; // already initialized. | ||
| } | ||
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| const asm = MonoRuntime.assembly_load("Uno.Gallery.WASM"); | ||
| const handlerClass = MonoRuntime.find_class(asm, "Uno.UI.Wasm", "LocationHrefHavigationHandler"); | ||
| this.notifyLocationHrefChangedMethod = MonoRuntime.find_method(handlerClass, "NotifyLocationHrefChanged", -1); | ||
| } | ||
| } | ||
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| declare var MonoRuntime: any; | ||
| } |