Servoy 2020 Documentation
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When developing a solution for NGClient, Servoy provides a plugin for interacting with the browser.

That plugin is called ngclientutils (plugins.ngclientutils.*)

 

It has the following functions:

Function

Documentation
getUserAgentThis will return the user agent string of the clients browser
setOnUnloadConfirmationMessage(String message)Set the message that will be shown when the browser tab is closed or the users navigates away, this can be used to let users know they have data modifications that are not yet saved
setViewportMetaDefaultForMobileAwareSites()

Call this when a solution can handle mobile device layouts (responsive design, can handle nicely width < height). This call is equivalent to calling setViewportMetaForMobileAwareSites( plugins.htmlHeaders.VIEWPORT_MOBILE_DEFAULT).

It should be what most solutions that are able layout correctly on smaller mobile screens need; it will still allow the user to zoom-in and zoom-out.

setViewportMetaForMobileAwareSites(viewportDefType)

Call this when a solution can handle mobile device layouts (responsive design, can handle nicely width < height). It will tell the device via the "viewport" meta header that it doesn't need to automatically zoom-out and use a big viewport to allow the page to display correctly as it would on a desktop.

'viewportDefType' can be one of:

plugins.ngclientutils.VIEWPORT_MOBILE_DEFAULT - will show content correctly, allow zoom-in and zoom-out; the generated meta tag will be

<meta name="viewport" content="width=device-width, initial-scale=1.0" />

plugins.ngclientutils.VIEWPORT_MOBILE_DENY_ZOOM - will show content correctly, denies zoom-in and zoom-out; the generated meta tag will be

<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0" />

plugins.ngclientutils.VIEWPORT_MOBILE_DENY_ZOOM_OUT - will show content correctly, allows zoom-in but denies zoom-out; the generated meta tag will be

<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0" />

plugins.ngclientutils.VIEWPORT_MOBILE_DENY_ZOOM_IN - will show content correctly, denies zoom-in but allows zoom-out; the generated meta tag will be

<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />

This method actually uses replaceHeaderTag. For example plugins.ngclientutils.VIEWPORT_MOBILE_DEFAULT would call replaceHeaderTag("meta", "name", "viewport", {
* tagName: "meta",
* attrs: [ { name: "name", value: "viewport" },
* { name: "content", value: "width=device-width, initial-scale=1.0" } ]
* });

replaceHeaderTag(tagName, attrNameToFind, attrValueToFind, newTag)

Utility method for manipulating 'contributedTags' array. It searches for an existing 'tag' that has the given 'tagName' and attribute ('attrNameToFind' & 'attrValueToFind'). If found it will replace it with 'newTag'. If not found it will just append 'newTag' to 'contributedTags'.

NOTE: this call will only replace/remove tags that were added via this plugin/service, not others that were previously present in the DOM

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