NativeScript/nativescript-core/utils/native-helper.android.ts

import { getNativeApplication, android as androidApp } from "../application";
import {
    messageType as traceMessageType,
    categories as traceCategories,
    write as traceWrite
} from "../trace";

// We are using "ad" here to avoid namespace collision with the global android object
export module ad {

    let application: android.app.Application;
    let applicationContext: android.content.Context;
    let contextResources: android.content.res.Resources;
    let packageName: string;
    export function getApplicationContext() {
        if (!applicationContext) {
            applicationContext = getApplication().getApplicationContext();
        }

        return applicationContext;
    }
    export function getApplication() {
        if (!application) {
            application = (<android.app.Application>getNativeApplication());
        }

        return application;
    }
    export function getResources() {
        if (!contextResources) {
            contextResources = getApplication().getResources();
        }

        return contextResources;
    }
    function getPackageName() {
        if (!packageName) {
            packageName = getApplicationContext().getPackageName();
        }

        return packageName;
    }

    let inputMethodManager: android.view.inputmethod.InputMethodManager;
    export function getInputMethodManager(): android.view.inputmethod.InputMethodManager {
        if (!inputMethodManager) {
            inputMethodManager = <android.view.inputmethod.InputMethodManager>getApplicationContext().getSystemService(android.content.Context.INPUT_METHOD_SERVICE);
        }

        return inputMethodManager;
    }

    export function showSoftInput(nativeView: android.view.View): void {
        const inputManager = getInputMethodManager();
        if (inputManager && nativeView instanceof android.view.View) {
            inputManager.showSoftInput(nativeView, android.view.inputmethod.InputMethodManager.SHOW_IMPLICIT);
        }
    }

    export function dismissSoftInput(nativeView?: android.view.View): void {
        const inputManager = getInputMethodManager();
        let windowToken: android.os.IBinder;

        if (nativeView instanceof android.view.View) {
            windowToken = nativeView.getWindowToken();
        } else if (androidApp.foregroundActivity instanceof androidx.appcompat.app.AppCompatActivity) {
            const decorView = androidApp.foregroundActivity.getWindow().getDecorView();
            windowToken = decorView ? decorView.getWindowToken() : null;
        }

        if (inputManager && windowToken) {
            inputManager.hideSoftInputFromWindow(windowToken, 0);
        }
    }

    export module collections {
        export function stringArrayToStringSet(str: string[]): java.util.HashSet<string> {
            const hashSet = new java.util.HashSet<string>();
            if (str !== undefined) {
                for (let element in str) {
                    hashSet.add("" + str[element]);
                }
            }

            return hashSet;
        }

        export function stringSetToStringArray(stringSet: any): string[] {
            const arr = [];
            if (stringSet !== undefined) {
                const it = stringSet.iterator();
                while (it.hasNext()) {
                    const element = "" + it.next();
                    arr.push(element);
                }
            }

            return arr;
        }
    }

    export module resources {
        let attr;
        const attrCache = new Map<string, number>();

        export function getDrawableId(name) {
            return getId(":drawable/" + name);
        }

        export function getStringId(name) {
            return getId(":string/" + name);
        }

        export function getId(name: string): number {
            const resources = getResources();
            const packageName = getPackageName();
            const uri = packageName + name;

            return resources.getIdentifier(uri, null, null);
        }
        export function getPalleteColor(name: string, context: android.content.Context): number {
            return getPaletteColor(name, context);
        }
        export function getPaletteColor(name: string, context: android.content.Context): number {
            if (attrCache.has(name)) {
                return attrCache.get(name);
            }

            let result = 0;
            try {
                if (!attr) {
                    attr = java.lang.Class.forName("androidx.appcompat.R$attr");
                }

                let colorID = 0;
                let field = attr.getField(name);
                if (field) {
                    colorID = field.getInt(null);
                }

                if (colorID) {
                    let typedValue = new android.util.TypedValue();
                    context.getTheme().resolveAttribute(colorID, typedValue, true);
                    result = typedValue.data;
                }
            }
            catch (ex) {
                traceWrite("Cannot get pallete color: " + name, traceCategories.Error, traceMessageType.error);
            }

            attrCache.set(name, result);

            return result;
        }
    }
}