sap.m.Dialog escapeHandler how-to

[Attila]

Hello Experts,

there is a new property of sap.m.Dialog, called escapeHandler. Does anyone know, how-to use it? It is available since 1.44. We're on 1.44.7, but could not make it working. It is a property and not an event handler btw.

The Dialog.fragment.xml part:
<Dialog title="{i18n>chooseWS}" contentHeight="100%" contentWidth="100%" stretch="true" verticalScrolling="false" escapeHandler="mayTheForceBeWithMe">

The Controller:
this._oDialog = sap.ui.xmlfragment("xxx.xxx.xxxx.xxx.Dialog", this); this._oDialog.setModel(this.getModel("i18n"), "i18n");
this._oDialog.open();
...
mayTheForceBeWithMe: function(oPromise) {
if (!this.oFilterEntry || this.oFilterEntry.workspace == "") {
oPromise.reject(); } else {
oPromise.resolve();
}
},
...

Function mayTheForceBeWithMe is not invoked.

Thank you

[former_member228602 · Accepted solution]

Hello Atilla,

I checked the issue and i found that if the dialog is created in the XML Fragment then it does not work. Where as if it is created in javascript controller it works. I checked the code of Dialog controller and this is the code

if (typeof oEscapeHandler === 'function') {
				// create a Promise to allow app developers to hook to the 'escape' event
				// and prevent the closing of the dialog by executing the escape handler function they defined
				new window.Promise(function (resolve, reject) {
					oPromiseArgument.resolve = resolve;
					oPromiseArgument.reject = reject;


					that.currentPromise = oPromiseArgument;


					oEscapeHandler(that._getPromiseWrapper());
				})
					.then(function (result) {
						that.close();
					})
					.catch(function () {
						jQuery.sap.log.info("Disallow dialog closing");
					});
			} else {


				this.close();
			}


          

So there the oEscapeHandler needs to be function . I think this could be a bug from why checks for the type , but yes the way for you to make it work is using in javascript controller .

Thanks and Regards,

Veera