I needs to use one jquery plugin with Angular2.In General terms, this plugin creates a copy of a piece of html, which has inputs.When data changes, angular2 rerenders it with all the errors etc.But Jquery must pass data back to angular2 when something changes.I did it through the
ControlGroup.controls['control_id'].updateValue(value,{emitEvent,emitModelToViewChange}).
All is well,data comes.But angular2 input in which jquery passes data doesn't become dirty or touched, but I need it to display errors.How to force the input to be touched or dirty? Thanks in advance.
P.S: I know that all this is bad, but I have no choice
There is a pull request to make these properties available https://github.com/angular/angular/pull/7288/files
Currently it is marked
- touched when the input emits the blur event
- changed when the input emits the input event
These events probably vary between different types of input controls.
See also https://github.com/angular/angular/blob/master/modules/angular2/src/common/forms/directives/default_value_accessor.ts
I would use the updateValueAndValidity after calling the updateValue one:
var ctrl = ControlGroup.controls['control_id'];
ctrl.updateValue(value,{emitEvent,emitModelToViewChange});
ctrl.updateValueAndValidity();
Related
comboBox.trigger(´chosen:updated´) what does this do in Jquery?
Anyone can give an example?
I dont see any effect or utility.
I really search over 20 links over google and I cannot find the documentation.
---- correcions ----
´chosen:update´ to ´chosen:updated´
comboBox.trigger(´chosen:update´)
comboBox
You will have a variable that points to a jquery collection containing a select, likely setup using
let comboBox = $("#mySelect");
.trigger
Raises the named event
'chosen:update'
the name of the event to raise.
In this case, the event is namespaced, this just allows it to be specifically looked for in the chosen namespace. It could also be .trigger("updated") and chosen2 will likely pick it up - this stop other code such as .on("update".. from triggering.
It also appears to be a typo as the event (depending on the version of chosen2) should be updated.
All together, you call this code when you change the value of the underlying select, eg:
var comboBox = $("#mySelect");
comboBox.val("newValue");
comboBox.trigger(´chosen:update´)
when your select has been converted to a select2 combo box. Without which, the select2 UI would not be updated to match the new value.
NB: The event to trigger appears to change with each version of select2, it could be one of:
comboBox.trigger('chosen:updated');
comboBox.trigger('change');
I need to clear all fields when they are hidden by a hideExpression, right now i have some code that adds a watcher to fields, and clearing them if they are hidden.
Problem is that this doesnt work for hideExpression's used on fields with fieldGroup's, since its apearently not allowed to add watcher to that type.
My example might explaine the issue better:
http://jsbin.com/fodijeziyu/1/edit?js,output
If you fill in the values, and click the hide checkbox, they should clear the model/view on the fields that gets hidden.
Generally on angular I would think different ways of doing things so that I won't be using watchers. It decreases performance a lot (and yes that sometimes might mean to use jQuery for it).
Now for angular-formly a way of doing what you want would be to use a function for hideExpression and achieve what you want.
Here is a working example.
Also read this link on the official angular-formly documentation.
There's an example on the website for this: http://angular-formly.com/#/example/very-advanced/remove-property-on-hide
You could use the watch with the true flag, in conjunction with your hideExpression:
$scope.$watch('someMiscForm', function() {
console.log('The model has changed!');
}, true);
Then alter/reset the fields you are interested in.
Can anyone tell me how to force a form change in jQuery. I am manually setting values with jQuery, but the form doesn't enter this function:
$('form[name="xy"] :input').change(function() { ...
Can I manually do this to enter this function?
You can use the trigger():
$('form[name="xy"] input').trigger('change');
or change method:
$('form[name="xy"] input').change();
Triggering a UI event, like change in this case may not be a good code practice, as events should generally be dispatched only by UA to notify App logic about changes in UI. You may consider re-organizing your code, so that it would become possible for you to invoke logic you want to call directly, not through a loop of dispatching pseudo-event.
I have several field
$("#a1").change(function(){
console.log('fire'); });
but when value change not user event not work
form[0].val = 100;
event not work
how can i catch this change data ?
ps data changes from different places not my code suggestions like trigger('change') not good idea
I do not think that events will fire when you set the value in that fashion.
Does it work when you set the value of the element in the browser?
What you can do is call form[0].change(), and it should work.
Changing the value property will not fire the change event.
In fact, your code should be changing value and not val.
You could call it explicitly after updating it.
form[0].value = 100;
form.change();
But you mention that is not an option.
The only other way is to poll for changes.
You could define a way of working with the controls inside your form. Create a javascript function that external developers can call to set the value of a given field and make them use that method. Then you can fire change or do whatever you want to your hearts content.
I'm not a newb to JavaScript but this is my first foray into Acrobat Scripting.
What I'm trying to do is change a text field based on the value selected in a comboBox.
Since I have many different comboboxes with the same set of options, and many text fields that are supposed to be bound to those, I would prefer a document scope function that could be reused for all of those.
I'm not sure if this is possible but here's what I'm thinking...
Detect when a combo box is changed. On the change event submission, take the export value from that and make it the value for the related text field.
Here's the steps:
capture combo box onmouseup event
detect which combo box triggered the event
match up the name of the combo box to its associated text field using an array listing
use a getField() to fetch the text field
set the text fields value to be the export value of the combo box
Any help with this would be appreciated. Especially good sources about Acrobat event triggers and how they work. I have been through a great deal of the API documentation and can't find anything on it.
Found it!
After exhaustive hours/days of Googling I finally found a solution that works.
The handler function needs to be bound to the 'Keystroke' event.
The handler function should contain:
if(!event.willCommit) {
this.getField('[field]').value = event.change;
}
Note: Where 'field' is the name of the field being updated and event.change is the value selected in the combobox.
To fetch the export value of the selection use the following:
if(!event.willCommit) {
this.getField('[field]').value = event.changeEx;
}
Apparently, 'Keystroke' is fired any time a UI element is interacted with. If you don't want it to execute when the document loads, be sure to bind the handler function to the event during the page load event.
Thoughts: AcroForms JS (Javascript for Acrobat) has a seriously broken event model. If you were to get the value of the combobox while using this even handler it would serve up a stale value. Not only does it take an obscure hack to make it work but there is little/no AcroForms JS community to provide answers to hard questions like these.