import TKUnit = require("../../TKUnit");
import helper = require("../helper");
import viewModule = require("ui/core/view");
import imageModule = require("ui/image");

// <snippet module="ui/activity-indicator" title="activity-indicator">
// # ActivityIndicator
// Using the activity indicator requires the ActivityIndicator module.
// ``` JavaScript
import activityIndicatorModule = require("ui/activity-indicator");
// ```
// ### Binding the activity indicator busy property to a view-model property.
//```XML
// <Page>
//   {%raw%}<ActivityIndicator busy="{{ isLoading }}" />{%endraw%}
// </Page>
//```
// </snippet>

var ASYNC = 0.2;
export function test_default_TNS_values() {
    // <snippet module="ui/activity-indicator" title="activity-indicator">
    // ### Creating an activity indicator
    // ``` JavaScript
    var indicator = new activityIndicatorModule.ActivityIndicator();
    // ```
    // </snippet>

    TKUnit.assertEqual(indicator.busy, false, "Default indicator.busy");
}

export function test_default_native_values() {
    var indicator = new activityIndicatorModule.ActivityIndicator();
    indicator.width = 50;
    indicator.height = 50;

    function testAction(views: Array<viewModule.View>) {
        TKUnit.assertEqual(getNativeBusy(indicator), false, "Default native indicator.busy");
    };

    helper.buildUIAndRunTest(indicator, testAction);
}

export function test_set_TNS_value_updates_native_value() {
    var indicator = new activityIndicatorModule.ActivityIndicator();
    indicator.width = 50;
    indicator.height = 50;

    function testAction(views: Array<viewModule.View>) {
        indicator.busy = true;
        TKUnit.wait(ASYNC);
        TKUnit.assertEqual(getNativeBusy(indicator), true, "Native value is different from TNS value.");
    };

    helper.buildUIAndRunTest(indicator, testAction);
}

// This method is only for the code snippet
/* tslint:disable:no-unused-variable */
function binding_busy_to_image() {
    /* tslint:enable:no-unused-variable */
    
    // <snippet module="ui/activity-indicator" title="activity-indicator">
    // ### Showing activity indicator while image is loading
    // ``` JavaScript
    var image = new imageModule.Image();
    var indicator = new activityIndicatorModule.ActivityIndicator();
    indicator.width = 100;
    indicator.height = 100;

    //// Bind the busy property of the indicator to the isLoading property of the image
    indicator.bind({
        sourceProperty: "isLoading",
        targetProperty: "busy"
    }, image);
    // ```
    // </snippet>
}

function getNativeBusy(indicator: activityIndicatorModule.ActivityIndicator): boolean {
    if (indicator.android) {
        return indicator.android.getVisibility() === android.view.View.VISIBLE;
    }
    else if (indicator.ios) {
        return indicator.ios.isAnimating();
    }
}
