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Browser Events

The Browser widget has the following events associated with it:

CloseddoLayout Event

This event is invoked for every widget when the widget position and dimensions are computed.

Syntax

doLayout()

Read/Write

Read + Write

Remarks

This event is invoked for all the widgets placed inside flex containers. This event is invoked in the order in which the widgets are added to the widget hierarchy and expect the frame property of the widget is calculated and available for use within this event.

This event is used to set the layout properties of child widgets in the relation to self and peer widgets whose layout is not yet performed.

The number of times this event invoked may vary per platform. It is not recommended to write business logic assuming that this function is invoked only once when there is a change in positional or dimensional properties. This event will not trigger when transformations are applied though widget is moved or scaled or rotated from its original location.

Example

//Sample code to set doLayout event callback to a button widget.
/*This code changes the top property of button2 and makes it appear below button1.*/
myForm.button1.doLayout=doLayoutButton1;

function doLayoutButton1(){
      
    myForm.button2.top = myForm.button1.frame.height;
}

Platform Availability

  • iOS
  • Android
  • Windows
  • SPA
ClosedhandleRequest Event

An event callback which gets invoked by the platform before browser widget navigates to a new URL.

Syntax

handleRequest()

Optional Parameters

eventobject

Optional. A unique Id that identifies the browser widget.

params

Optional. An object that identifies the url parameters as key-values pair.

Following are the parameters of the object.

originalURL [String] - Optional

Specifies the original url.

queryParams[Object] - Optional

Specifies the dictionary containing the query parameters passed to the URL as key, values in the dictionary.

requestMethod[String] - Optional - Supported only on iOS

Specifies the request method type. Following are the available options:

  • Constants.BROWSER_REQUEST_METHOD_GET
  • Constants.BROWSER_REQUEST_METHOD_POST

header[JSObject] - Optional - Supported only on iOS

Specifies a dictionary containing all the HTTP header fields.

Read/Write

Write only

Remarks

This is useful in scenarios where the developer wants to keep track of the URLs that the browser field navigates to. For example, in a payment flow (that is, being executed inside a browser widget) on successful redirection to a payment confirmation page the developer would like to take the user to a new native form.

On iOS platform, whenever handleRequest is set to browser and request comes to browser widget to load the url or html, then before loading the content, handle request is called. Also, whenever a user selects any hyperlink then also handleRequest is called.

The return value from this function determines how the browser widget handles the original request. If a false value is returned, then the browser widget continues navigation to the original URL and if the true value is returned then the developer has to handle the request.

The handleRequest event is not triggered for the web pages that change the HTML content dynamically within the same page. For example, SPA apps.

The handleRequest event is not triggered for the bookmark navigation on the same page in the Android platform.

Example

//The below function is the call back for handleRequest event
function handleRequestCallback(browserWidget, params) {
    kony.print("handleRequest event triggered");
    kony.print("Original URL" + params["originalURL"]);
    kony.print("Request Method" + params["requestMethod"]);
    kony.print("Header" + JSON.stringify(params["header"]));
    //Ignore this request and continue loading other URLs.
    return false;
    //If false is returned, platform will load the originalurl in the browser widget.
}

frmobj.brw1.handleRequest = handleRequestCallback

Platform Availability

  • iPhone
  • iPad
  • Android
  • Windows
ClosedonFailure Event

An event callback which gets invoked by the platform when the given URL fails to load. The behavior of this callback has changed in Visualizer 7.3 and may require changes to your code, particularly the addition of the errorObject parameter.

Syntax

onFailure()

Optional Parameters

eventObject

Required. A unique Id that identifies the browser widget.

errorObject

Required. An object that provides details for the error. See Remarks for possible values. This value is new in Visualizer 7.3.

Read/Write

Read + Write

Remarks

The errorObject is a dictionary object that has these predefined keys:

  • errorCode - the kony error code
  • errorMessage – error message
  • errorDetails – platform specific error details
  • httpStatusCode - Actual HTTP status code. For iOS this will be set to -1.

All errors reported by this callback:

Error Code Error Message Android Windows iOS
1000 Unknown error while connecting. The platform cannot differentiate between network errors, The platform reports error code 1000 by default. ERROR_UNKNOWN

Unknown

InternalServerError

OperationCanceled

UnexpectedClientError

UnexpectedStatusCode

 ErrorUnknown
1001 Cannot connect to host.

ERROR_CONNECT

ERROR_HOST_LOOKUP

CannotConnect,

ConnectionAborted,

ConnectionReset,

Disconnected,

ServiceUnavailable

ServerUnreachable

NotFound,

HostNameNotResolved

ErrorCannotConnectToHost

ErrorDNSLookupFailed

ErrorCannotFindHost,

ErrorRedirectToNonExistentLocation
1002 Input Stream Related Errors ERROR_IO   ErrorRequestBodyStreamExhausted
1003 Permission Related

ERROR_AUTHENTICATION

ERROR_PROXY_AUTHENTICATION

ERROR_UNSUPPORTED_AUTH_SCHEME

Unauthorized

PaymentRequired

UseProxy

Forbidden

ProxyAuthenticationRequired

 ErrorUserAuthenticationRequired
1004 Invalid input url

ERROR_BAD_URL

ERROR_UNSUPPORTED_SCHEME

RequestEntityTooLarge

RequestUriTooLong

ErrorBadURL,

ErrorUnsupportedURL
1005 Invalid method provided

 

MethodNotAllowed

NotImplemented

  
1006 File Errors

ERROR_FILE

ERROR_FILE_NOT_FOUND

  

ErrorFileDoesNotExist,

ErrorFileIsDirectory,

ErrorNoPermissionsToReadFile,

ErrorDataLengthExceedsMaximum
1007 Device Connectivity related issues    

ErrorNetworkConnectionLost,

ErrorNotConnectedToInternet

ErrorDataNotAllowed

ErrorCallIsActive

ErrorInternationalRoamingOff
1008 Request failed.  

BadRequest Conflict

ExpectationFailed

PreconditionFailed

  
1009 Invalid Server Response   ErrorHttpInvalidServerResponse  
1010 Request timed out. ERROR_TIMEOUT

RequestTimeout,

Timeout

  
1011 User Canceled    

ErrorBadServerResponse

ErrorCannotParseResponse

ErrorCannotDecodeRawData,

ErrorCannotDecodeContentData

ErrorBadServerResponse
1012 Redirection related Errors ERROR_REDIRECT_LOOP

HttpsToHttpOnRedirection, HttpToHttpsOnRedirection,

MovedPermanently

RedirectFailed

SeeOther

TemporaryRedirect

UnexpectedRedirection

 ErrorHTTPTooManyRedirects
1013 Too many requests during this load ERROR_TOO_MANY_REQUESTS    
1014 User canceled authentication     ErrorUserCancelledAuthentication
1015 App transport security requires secure connection     ErrorAppTransportSecurityRequiresSecureConnection
1016 Resource related Errors  

Found

Gone

MultipleChoices

NotModified

RequestedRangeNotSatisfiable

LengthRequired

NotAcceptable

UnsupportedMediaType

ErrorResourceUnavailable,

ErrorZeroByteResource
1018 SSL related error ERROR_FAILED_SSL_HANDSHAKE

CertificateCommonNameIsIncorrect, CertificateContainsErrors,

CertificateExpired,

CertificateIsInvalid,

CertificateRevoked,

CertificateRevoked

ErrorSecureConnectionFailed, 

ErrorServerCertificateHasBadDate, 

ErrorServerCertificateUntrusted, 

ErrorServerCertificateHasUnknownRoot, 

ErrorServerCertificateNotYetValid, 

ErrorClientCertificateRejected, 

ErrorClientCertificateRequired, 

ErrorCannotLoadFromNetwork

This event is called only for the given request URL, but not for the subsequent web navigation request failures.

This event is also not called when htmlString is set to the web widget.

Example


// This function is the callback for the onFailure event that checks for iOS native error -999
function onFailureCallback(eventObj, error) {
	if (error.errorCode !== 1011) { 
		// native error -999 is mapped to Kony error 1011.
		kony.print("Unable to display report.");
	}
}
frmBrowser.myBrowser.onFailure=onFailureCallback;

Platform Availability

  • iOS
  • Android
  • Windows 10

Not available on SPA

ClosedonPageFinished Event

This event is sent when a page is finished loading.

Syntax

onPageFinished (eventobject, params)

Parameters

eventobject

Optional. A unique Id that identifies the browser widget.

params

Optional. An object that identifies the url parameters as key-values pair. See Remarks for possible values.

Remarks

The following are the parameters of the params object.

originalURL [String] - Optional

Specifies the original url.

queryParams[Object] - Optional

Specifies the dictionary containing the query parameters passed to the URL as key, values in the dictionary.

Example

Form2.brw1.onPageFinished = onPageFinishedCallback;

function onPageFinishedCallback(eventobject, params) {

    kony.print("The eventobject is: " + eventobject + "@@@@ params are: " + params);
}

Platform Availability

  • iOS
  • Android
  • Windows
ClosedonPageStarted Event

This event is sent when a page starts loading.

Syntax

onPageStarted (eventObject, params)

Parameters

eventObject

Optional. A unique Id that identifies the browser widget.

params

Optional. An object that identifies the url parameters as key-values pair. See Remarks for possible values.

Remarks

The following are the parameters of the params object.

originalURL [String] - Optional

Specifies the original url.

queryParams[Object] - Optional

Specifies the dictionary containing the query parameters passed to the URL as key, values in the dictionary.

Example

Form2.brw1.onPageStarted = onPageStartedCallback;

function onPageStartedCallback(eventobject, params) {

    kony.print("The eventobject is: " + eventobject + "@@@@ params are: " + params);
}

Platform Availability

  • iOS
  • Android
  • Windows 10
ClosedonProgressChanged Event

The onProgressChanged callback event shows you the progress of the page loading in the Browser Widget. The platform invokes the event when the page is loading.

Syntax

onProgressChanged

Read/Write

Read + Write

Remarks

When you set the onProgressChanged event in the Browser Widget, the progress value of the loading page is passed as a parameter to the callback.

Example

// The following function is the callback for onProgressChanged event
function onProgessChangedCallback(progress) {
    alert("Progress value -" + progress);
}

frmBrowser.myBrowser.onProgressChanged = onProgessChangedCallback;

Platform Availability

  • Available in the IDE
  • Available only on the Android platform.
ClosedonReachingBegining Event

Specifies the scrolling events which gets called when scrolling reaches beginning of the widget.

Syntax

onReachingBegining()

Optional Parameters

browser

Handle to the widget reference.

scrollDirection - Mandatory

Specifies the direction in which the scroll box must scroll. Following are the available options:

  • SCROLL_VERTICAL: Specifies the browser must scroll vertical direction.
  • SCROLL_BOTH: Specifies the browser must scroll in both horizontal and vertical direction.

Note: To set the value through code, prefix the option with constants. such as constants.<option>.

Read/Write

Read + Write

Example

//Sample code to set onReachingBeginning event callback to a Browser widget.

frmBrowser.myBrowser.scrollingEvents={
        onReachingBeginning: onReachingBeginningCallBCk
    };
function onReachingBeginningCallBCk (webwidget, scrollDirection) {
    alert("onReachingBegining event triggered");
}

Platform Availability

Available on iPad platform.

ClosedonReachingEnd Event

Specifies the scrolling events which gets called when scrolling reaches the end of the widget.

Syntax

onReachingEnd()

Optional Parameters

browser

Handle to the widget reference.

scrollDirection - Mandatory

Specifies the direction in which the scroll box must scroll. Following are the available options:

  • SCROLL_VERTICAL: Specifies the browser must scroll vertical direction.
  • SCROLL_BOTH: Specifies the browser must scroll in both horizontal and vertical direction.

Note: To set the value through code, prefix the option with constants. such as constants.<option>.

Read/Write

Read + Write

Example

//Sample code to set onReachingEnd event callback to a Browser widget.

frmBrowser.myBrowser.scrollingEvents={
        onReachingEnd: onReachingEndCallBCk
    };
function onReachingEndCallBCk (webwidget, scrollDirection) {
    alert("onReachingEnd event triggered");
}

Platform Availability

Available on iPad platform.

ClosedonReceive Event

This event is triggered whenever a page is loaded that has an event callback such as digest authentication.

Handler signature

onReceive (eventType)

Parameters

eventType

Required. The constant that identifies the event type. See Remarks for possible values.

Remarks

The only possible value for eventType is constants.WEBWIDGET_RECEIVE_TYPE_HTTP_AUTH

Example

Form2.brw1.onReceive = onReceiveCallback;

function onReceiveCallback(eventtype) {

    kony.print("The event type is: " + eventtype);
}

Platform Availability

  • Android

ClosedonSafeBrowsingHit Event

This event registers a callback that notifies the application that a loading URL has been flagged by Safe Browsing. If this event callback is not registered, the application displays a default interstitial page.

Handler signature

onSafeBrowsingHit()

Parameters

  • browserwidgetref [widgetref]: This parameter provides the widget reference of the Browser widget that has triggered the onSafeBrowsingHit event.
  • requestUrl[String]: This parameter provides the URL which triggered the onSafeBrowsingHit event.
  • threatType [Number]: This parameter specifies the reason why the requestUrl parameter is a threat.

    The following constant are applicable for this parameter:
    • constants.BROWSER_SAFE_BROWSING_THREAT_UNKNOWN
    • constants.BROWSER_SAFE_BROWSING_THREAT_MALWARE
    • constants.BROWSER_SAFE_BROWSING_THREAT_PHISHING
    • constants.BROWSER_SAFE_BROWSING_THREAT_UNWANTED_SOFTWARE

Remarks

  • You should use the onSafeBrowsingHit callback and the setSafeBrowsingResponse Method together to create a custom interstitial page when the Browser widget loads a flagged URL.

Example

/*Sample snippet for creating a custom interstitial flexContainer inside the form:frmBrowser with the browser widget:myBrowser*/
//setting safebrowsing hit callback
frmBrowser.myBrowser.onSafeBrowsingHit = onSafeBrowsingHitForCustomInterstition;
var reqUrl;

function onSafeBrowsingHitForCustomInterstition(widget, requestUrl, threatType) {
    reqUrl = requestUrl; //getting SafeBrowsingPrivacyPolicyUrl to display the link in custom interstitial page.
    var doc = kony.ui.BrowserSettings.getSafeBrowsingPrivacyPolicyUrl();
    frmBrowser.richtext.text = "&lt;p&gt;Its a custom message for Google Safe Browsing which has detected malware." + "&lt;a href=" + doc + "&gt;&lt;font color=\"blue\"&gt;Learn more/font&gt;&lt;/a&gt;&lt;/p&gt;";
    //making the interstitial flexContainer visible in onSafeBrowsingHit event callback.
    frmBrowser.flexCustomInterstition.isVisible = true;
}

function proceed_button_click(eventobject) { //making the interstitial flexContainer invisible after clicking proceed button
    frmBrowser.flexCustomInterstition.isVisible = false;
    frmBrowser.browserID.setSafeBrowsingResponse(reqUrl, constants.BROWSER_SET_SAFEBROWSING_RESPONSE_PROCEED);
}

function backtosafety_button_click(eventobject) { //making custom interstitial flexContainer invisible after clicking backtosafety button.
    frmBrowser.flexCustomInterstition.isVisible = false;
    frmBrowser.browserID.setSafeBrowsingResponse(reqUrl, constants.BROWSER_SET_SAFEBROWSING_RESPONSE_BACKTOSAFETY);
}

The screenshot of the custom interstitial FlexContainer created by using the Example code is as follows.

Platform Availability

  • Android(API Level 27 and later)
ClosedonScrollWidgetPosition Event

This event callback is invoked by the platform when the widget location position gets changed on scrolling. The onScrollWidgetPosition event returns the positional coordinates of the widget's location with respect to the screen (screenX and screenY) and the parent container (frameX and frameY). This event is invoked asynchronously, and is not available for FlexForm widget.

Syntax

onScrollWidgetPosition()

Read/Write

Read + Write

Example

var LabelWdg = new kony.ui.Label(basicConf, layoutConf, pspConf);
form.add(LabelWdg);
LabelWdg.onScrollWidgetPosition = onScrollWidgetPositionCallBack;

function onScrollWidgetPositionCallBack(wdg, screenX, screenY, frameX, frameY) { //wdg : Widget that is registered for onScrollWidgetPosition.
    /*screenX : Position of widget with respect to 
the screen's X - coordinates (after downsizing the navigation bar and status bar).*/
    /*screenY : Position of widget with respect to the screen's Y - 
coordinates (after downsizing the navigation bar and status bar).*/
    //frameX : Position of widget with respect to parent container's X- coordinates.
    //frameY : Position of widget with respect to parent container's Y- coordinates.
}

Platform Availability

  • Not Accessible from IDE
  • Android, iOS, SPA, and Windows
ClosedonSuccess Event

An event callback which gets invoked by the platform when the given request URL is successful in loading the data.

Syntax

onSuccess()

Read/Write

Read + Write

Remarks

This event is called every time the page is loaded. This event is not called when htmlString is set to the web widget.

This event gets called whenever the URL is loaded, or you navigate from one URL to another, or the browser URL internally redirects to another URL. This event is also called whenever the content is loaded, and when a URL contains any third party content using an iframe.

Example

//Sample code to set a callback to onSuccess event of a Browser widget.

frmBrowser.myBrowser.onSuccess= onSuccessCallback;

function onSuccessCallback(browser) {

   alert("onSuccess event triggered");
}

For more information about defining an action sequence for this event, see Event Editor in the Kony Visualizer User Guide.

Platform Availability

Available on all platforms except Desktop Web, and SPA.

 

prem Copyright © 2012 Kony, Inc. All rights reserved.
prem Copyright © 2012 Kony, Inc. All rights reserved.

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