I know to override in UI5 the default behavior of sap.m.Dialog's escapeHandler via controller, e.g.:
this._oDialog.setEscapeHandler((oEscapeHandler) => {
oEscapeHandler.reject();
});
The question is it possible to provide an alternative escapeHandler behavior via XML-template without using of setEscapeHandler?
Ideally, it should be something like escapeHandler = "none/customFunction", e.g.:
<Dialog
id = "authDialog"
title = "{i18n>DIALOG_TITLE}"
type = "Message"
escapeHandler = "%CUSTOM_ESCAPE_HANDLER%">
</Dialog>
Particularly, I want to disable a Dialog closing on Esc button press and to do it in an elegant, declarative manner via XML-template, e.g. escapeHandler = "none".
There was a new commit (merged today) that enables assigning controller function to escapeHandler. With that, the below code is now possible:
<Dialog xmlns="sap.m"
id="authDialog"
title="{i18n>DIALOG_TITLE}"
type="Message"
escapeHandler=".handleEscape"
>
handleEscape: function(pEscapePending) {
// Depending on the use case, call pEscapePending.resolve() or pEscapePending.reject() to overwrite the default behavior.
},
The fix should be available with the 1.86 release.
I solved this issue by putting the property escapeHandler = "customFunction" and then having a function with no implementation in the controller. Basically in customFunction I had a comment explaining that this is used to override the default escape behaviour.
Related
In the onChange of React-Bootstrap-Typeahead, I need to manually set a custom display value. My first thought was to use a ref and do something similar to the .clear() in this example.
But although .clear() works, inputNode.value = 'abc' does not work, and I'm left with the old selected value from the menu.
onChange={option => {
typeaheadRef.current.blur(); // This works
typeaheadRef.current.inputNode.value = 'abc'; // This does not work (old value is retained)
}}
I also tried directly accessing the DOM input element, whose ID I know, and doing
var inputElement = document.querySelector('input[id=myTypeahead]');
inputElement.value = 'abc';
But that didn't work either. For a brief second, right after my changed value = , I do see the new display label, but then it's quickly lost. I think the component saves or retains the menu-selected value.
Note: I cannot use selected, I use defaultSelected. I have some Formik-related behavior that I've introduced, and it didn't work with selected, so I'm stuck with defaultSelected.
The only workaround I found is to re-render the Typeahead component (hide and re-show, from a blank state) with a new defaultSelected="abc" which is a one-time Mount-time value specification for the control.
I couldn't get selected=.. to work, I have a wrapper around the component which makes it fit into Formik with custom onChange and onInputChange and selected wasn't working with that.
So the simple workaround that works is, if the visibility of the Typeahead depends on some condition (otherwise it won't be rendered), use that to momentarily hide and re-show the component (a brand new repaint) with a new defaultSelected, e.g.
/* Conditions controlling the visibility of the Typeahead */
!isEmptyObject(values) &&
(values.approverId === null || (values.approverId !== null && detailedApproverUserInfo)
)
&&
<AsyncTypehead defaultSelected={{...whatever is needed to build the string, or the literal string itself...}}
..
// Given the above visibility condition, we'll hide/re-show the component
// The below will first hide the control in React's renders
setFieldValue("approver", someId);
setDetailedUserInfo(null);
// The below will re-show the control in React's renders, after a small delay (a fetch)
setDetailedUserInfo(fetchDetailedUserInfo());
I have a UITextField called commentField and I create an Observable<Bool> like this:
let isCommentFieldValid = self.commentField.rx.text.orEmpty.map({ !$0.isEmpty })
This observable determines whether a button is enabled or not.
The problem is that when I change the text property of commentField liked this:
self.commentField.text = ""
The isCommentFieldValid doesn't trigger again and, thus, the button's state doesn't change. Any edition using the UI works: if I remove all text from the field through the keyboard, the isCommentFieldValid updates, but via code it doesn't.
Is there a reason this doesn't work?
If you look at the underlying implementation for rx.text you'll see that it relies on the following UIControlEvents: .allEditingEvents and .valueChanged. Explicitly setting the text property on UITextField does not send actions for these events, so your observable is not updated. You could try sending an action explicitly:
self.commentField.text = ""
self.commentField.sendActions(for: .valueChanged)
As you can see in this plunkr (https://plnkr.co/edit/3EDk5xxSLRolv2t9br84?p=preview) I have two selects: one in the main component behaving as usual, and one in a custom component, inheriting the ngModel settings.
The following code links the innerNgModel to the component ngModel.
ngAfterViewInit() {
//First set the valueAccessor of the outerNgModel
this.ngModel.valueAccessor = this.innerNgModel.valueAccessor;
//Set the innerNgModel to the outerNgModel
//This will copy all properties like validators, change-events etc.
this.innerNgModel = this.ngModel;
}
It works, since the name property is updated by both selects.
However when it first loads the second select has no selection.
I guess I'm missing something, a way to initialize the innerNgModel with the initial value.
This is a weird situation to do something like this, but I believe to get this working they need to implement another life-cycle hook. AfterModelSet or something like that :)
Anyways, you can solve this with a simple setTimeout and a setValue:
ngAfterViewInit() {
this.ngModel.valueAccessor = this.innerNgModel.valueAccessor;
this.innerNgModel = this.ngModel;
setTimeout(() => {
this.innerNgModel.control.setValue(this.ngModel.model);
})
}
plunkr
i have a basic form . inside it , i have two fields(dropdown and textbox) whose behaviour is dependent on each other. I want to reset the textbox based on the change in dropdown. Also i want to add/integrate into the DOM as a new element so that validity etc can be taken care of which is to say i can use my $dirty to hide/show the message .
Use ng-model and $watch
<select ng-model="dropdown" ng-options="**"><!-- --></select>
<textbox ng-model="textbox"></textbox>
$scope.$watch('dropdown', function () {
$scope.textbox = '';
});
http://docs.angularjs.org/api/ng.$rootScope.Scope#$watch
Two things:
To have one value be dependant on another, just listen to the ng-change event of the first and then update the variable that the second one is bound to. eg:
$scope.selectChanged = function() {
$scope.textValue = '';
}
To do validation, one approach I like to take is to have an "error" element declared and just show/hide it when needed.
Here's a quick snippet that illustrates both approaches
http://jsfiddle.net/marplesoft/ULhVS/
I have an ASPxGridView with the following columns:
<dx:GridViewDataCheckColumn FieldName="ProtocolEnabled" Caption="Protocol Enabled">
<DataItemTemplate>
<asp:Literal ID="ltProtocolEnabled" runat="server" />
</DataItemTemplate>
</dx:GridViewDataCheckColumn>
<dx:GridViewDataColumn FieldName="ProtocolCount" Width="0" Caption="Protocol Count">
The checkbox column has a template with a literal in it so I can display Yes/No instead of an empty checkbox, but that's probably TMI. What I need to do is this:
In edit mode: When ProtocolEnabled is checked, I need to enable the ProtocolCount textbox. When ProtocolEnabled is unchecked, I need to disable ProtocolCount and set its text to 0.
I am not asking for a step-by-step, but a general pointer in the right direction. I would like to use callbacks if at all possible. I also promise I will not delete this question as you are answering it =P.
Update: Thanks to answerer, I was sent in the direction I needed to go. Here's the code I used:
<dx:GridViewDataCheckColumn FieldName="ProtocolEnabled" Caption="Protocol Enabled" CellStyle-HorizontalAlign="Left">
<DataItemTemplate>
<asp:Literal ID="ltProtocolEnabled" runat="server" />
</DataItemTemplate>
<PropertiesCheckEdit>
<ClientSideEvents CheckedChanged="function(s,e) {ProtocolEnabledChecked(s);}" />
</PropertiesCheckEdit>
</dx:GridViewDataCheckColumn>
<dx:GridViewDataColumn FieldName="ProtocolCount" Width="0" Caption="Protocol Count">
function ProtocolEnabledChecked(ck) {
var x = gvApplicationServer.GetEditor("ProtocolCount");
if (ck.GetValue()) {
x.enabled = true;
}
else {
x.SetValue(0);
x.enabled = false;
}
}
It's clientside code instead of callback.
First of all Check this for Accessing Controls Contained within Templates
To show Yes/No
On HtmlRowCreated Event access control and set it's text property after finding the control in the
Literal literal = ASPxGridView1.FindRowCellTemplateControl(e.VisibleIndex,
ASPxGridView1.Columns["Name"] as GridViewDataColumn, "ASPxButtonEdit1") as Literal ;
literal.Text = (bool)grid.GetRowValues(e.VisibleIndex, "columnName") ? "Yes" : "No";
In Edit Row Template Do as you did as above..
If you want to do some client side functionality then .. create client side event OnClientClick and use checkbox client side method. chkclientinstanceName.getValue(); or other to check with it is checked or not..
these controls are client accessible so enable/ disable by using txtClientName.SetEnabled(true/false);
for more help go to the
DevExpress.Web.ASPxEditors ClientScript namespace..
Try this step by step .. hope it will be helpful..