@finanzritter/nativescript-pdf-view/pdf-view.android.js

A basic PDF viewer plugin for NativeScript, to display PDF documents on iOS and Android.

var pdfviewer = com.github.barteksc.pdfviewer;
import { Http, knownFolders } from '@nativescript/core';
import { PDFViewCommon, srcProperty } from './pdf-view.common';
var PDFViewSubclass = /** @class */ (function (_super) {
    __extends(PDFViewSubclass, _super);
    function PDFViewSubclass(a, b) {
        var _this = _super.call(this, a, b) || this;
        PDFViewSubclass.constructorCalled = true;
        // necessary when extending TypeScript constructors
        return global.__native(_this);
    }
    PDFViewSubclass.prototype.setUri = function (uri) {
        this.uri = uri;
    };
    PDFViewSubclass.prototype.setEnableAnnotationRendering = function (enable) {
        this.enableAnnotationRendering = enable;
    };
    PDFViewSubclass.prototype.setOnLoadHandler = function (func) {
        this.onLoadHandler = func;
    };
    PDFViewSubclass.prototype.drawPdf = function () {
        if (this.uri != null) {
            var defaultSpacingDP = 8;
            this
                .fromUri(this.uri)
                .onLoad(this.onLoadHandler)
                .spacing(defaultSpacingDP)
                .enableAnnotationRendering(this.enableAnnotationRendering)
                .fitEachPage(true)
                .load();
        }
    };
    // mimics the usage of AndroidPdfView and the onAttachedToWindow method in react-native-pdf at
    // https://github.com/wonday/react-native-pdf/blob/master/android/src/main/java/org/wonday/pdf/PdfView.java#L207-L211
    PDFViewSubclass.prototype.onAttachedToWindow = function () {
        _super.prototype.onAttachedToWindow.call(this);
        if (this.isRecycled()) {
            this.drawPdf();
        }
    };
    PDFViewSubclass.constructorCalled = false;
    return PDFViewSubclass;
}(pdfviewer.PDFView));
export class PDFView extends PDFViewCommon {
    constructor() {
        super(...arguments);
        this.tempFolder = knownFolders.temp().getFolder('PDFViewer.temp/');
        this.onLoadHandler = (() => {
            const pdfViewRef = new WeakRef(this);
            return new pdfviewer.listener.OnLoadCompleteListener({
                loadComplete: numPages => {
                    PDFViewCommon.notifyOfEvent(PDFViewCommon.loadEvent, pdfViewRef);
                },
            });
        })();
    }
    get android() {
        return this.nativeView;
    }
    set android(value) {
        this.nativeView = value;
    }
    createNativeView() {
        return new PDFViewSubclass(this._context, void 0);
    }
    [srcProperty.setNative](value) {
        this.loadPDF(value);
    }
    loadPDF(src) {
        if (!src || !this.android) {
            return;
        }
        this.promise = void 0;
        if (src.indexOf('://') === -1) {
            src = 'file://' + src;
        }
        else if (src.indexOf('file://') !== 0) {
            this.cacheThenLoad(src);
            return;
        }
        const uri = android.net.Uri.parse(src);
        this.android.setUri(uri);
        this.android.setEnableAnnotationRendering(this.enableAnnotationRendering);
        this.android.setOnLoadHandler(this.onLoadHandler);
        this.android.drawPdf();
    }
    cacheThenLoad(url) {
        this.tempFolder.clear().then(() => {
            const promise = this.promise = Http
                .getFile(url, `${this.tempFolder.path}/${Date.now()}.pdf`)
                .then(file => {
                if (this.promise === promise) {
                    this.loadPDF(file.path);
                }
            }).catch(error => {
                console.error(error);
            });
        });
    }
}
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