NativeScript/utils/utils.ios.ts

import common = require("utils/utils-common");
import colorModule = require("color");

// merge the exports of the common file with the exports of this file
declare var exports;
require("utils/module-merge").merge(common, exports);

function isOrientationLandscape(orientation: number) {
    return orientation === UIDeviceOrientation.UIDeviceOrientationLandscapeLeft || orientation === UIDeviceOrientation.UIDeviceOrientationLandscapeRight;
}

export module layout {
    var MODE_SHIFT = 30;
    var MODE_MASK = 0x3 << MODE_SHIFT;

    export function makeMeasureSpec(size: number, mode: number): number {
        return (Math.round(size) & ~MODE_MASK) | (mode & MODE_MASK);
    }

    export function getDisplayDensity(): number {
        return 1;
    }
}

export module ios {
    export module collections {
        export function jsArrayToNSArray(str: string[]): any {
            var arr = new NSMutableArray();
            if ("undefined" !== typeof str) {
                for (var element in str) {
                    arr.addObject(str[element]);
                }
            }
            return arr;
        }

        export function nsArrayToJSArray(a: any): string[] {
            var arr = [];
            if ("undefined" !== typeof a) {
                for (var i = 0; i < a.count(); i++) {
                    arr.push(a.objectAtIndex(i));
                }
            }

            return arr;
        }
    }

    export function getColor(uiColor: UIColor): colorModule.Color {
        var redRef = new interop.Reference<number>();
        var greenRef = new interop.Reference<number>();
        var blueRef = new interop.Reference<number>();
        var alphaRef = new interop.Reference<number>();
        
        uiColor.getRedGreenBlueAlpha(redRef, greenRef, blueRef, alphaRef);
        var red = redRef.value * 255;
        var green = greenRef.value * 255;
        var blue = blueRef.value * 255;
        var alpha = alphaRef.value * 255;

        return new colorModule.Color(alpha, red, green, blue);
    }

    export function getActualHeight(uiView: UIView): number {
        if (uiView.window && !uiView.hidden) {
            return uiView.frame.size.height;
        }

        return 0;
    }

    export function isLandscape(): boolean {
        var device = UIDevice.currentDevice();
        var statusBarOrientation = UIApplication.sharedApplication().statusBarOrientation;
        var isStatusBarOrientationLandscape = isOrientationLandscape(statusBarOrientation);
        return isOrientationLandscape(device.orientation) || isStatusBarOrientationLandscape;
    }

    export var MajorVersion = NSString.stringWithString(UIDevice.currentDevice().systemVersion).intValue;
} 

export function GC() {
    __collect();
}