There's a new `validators` property that can be used to add validators to `StatusInput` instances, which are executed in the same order:
```qml
StatusInput {
text: "Some value"
validators: [...]
}
```
For convenience StatusQ provides some common validation methods, such as `StatusMinLengthValidator`, StatusMaxLengthValidator` and could be extended to other (e.g. email validation etc):
```qml
StatusInput {
text: "Some value"
validators: [
StatusMinLengthValidator { minLength: 3 }
]
}
```
Validators are executed every time the text of the input changes. They are executed in the same order they have been applied, which enables users to create cascading conditions like "First make sure the value is at least 3 characters long, then make sure it matches a certain pattern".
When a validation fails, it sets the validity of the input (`valid: false`) accordingly and optionally exposes additional error information on `StatusInput.errors`:
```qml
StatusInput {
text: "Fo"
onTextChanged: {
if (errors) {
/**
* errors now has the following structure:
* errors: {
* minLength: { minValue: 3, actual: ... }
* }
* Also, `StatusInput` is now `valid = false`
**/
errorMesssage = "Expected " + errors.minLenght.minValue + " but got: "+ errors.minLength.actual; // i18n'able
}
}
validators: [
StatusMinLengthValidator { minLength: 3 }
]
}
```
There can be any number of error objects on the `errors` property, depending on who many validators have been run that failed validation.
Custom validators can be implemented by introducing a new `StatusValidator` type that has to implement a `validate()` function and defines the validators name. The `validate()` function has to return either `true` or `false` depending on whether the value is valid.
Alternatively, the function can return an error object which gets exposed on the underlying input's `errors` property, at which point it's considered invalid as well.
Here's a simple custom validator:
```qml
// HelloValidator.qml
import StatusQ.Controls.Validators 0.1
StatusValidator {
property string name: "hello"
validate: function (value) { // `value` is the `text` value of the underlying control
return value === "hello"
}
}
```
Applying this validators would look like this:
```qml
StatusInput {
text: "Some value"
validators: [
HelloValidator {}
]
onTextChanged: {
if (errors.hello) {
errorMessage = "Doesn't say hello!"
}
}
}
```
Alternatively, validators can return error objects to provide more information about what went wrong. Here's the implementation of the `StatusMinLengthValidator` as an example:
```qml
StatusValidator {
property int minLength: 0
name: "minLength"
validate: function (value) {
return value.length >= minLength ? true : {
min: minLength,
actual: value.length
}
}
}
```
Because validators as components, they can hold any custom properties they need to be configured.
There has been concern that, with this API, error messages need to be potentially defined in multiple places, given that there could be multiple instances of any validator. This is easily solved by having a centralized function figure out what the error message is, given a certain error object:
```qml
StatusInput {
validators: [
StatusMinLengthValidator { minLength: 3 }
]
onTextChanged: {
if (errors) {
errorMessage = getErrorMessage(errors) // this function is provided by global or elsewhere
}
}
}
```
Closes#298
This component can be used to group different sections within a popup menu.
Usage:
```qml
StatusPopupMenu {
StatusMenuItem {
text: "One"
icon.name: "info"
}
StatusMenuHeadline {
text: "Some text"
}
StatusMenuItem {
text: "Two"
icon.name: "info"
}
}
```
This is a wrapping component that can be used to render community chat
lists and categories. It takes care of rendering categories, the top
chat list, as well as becominng scrollable in case the content outgrows
the available space.
Usage:
```qml
import StatusQ.Components 0.1
StatusChatListAndCategories {
chatList.model: ... // non-categorized chat items, pass all chat items here, the component will take care of filtering categorized items out
categoryListModel: ... // available categories (need to have `id` and `name`)
selectedChatId: ...
showCategoryActionButtons: true // default `false` - useful when only admin users can create and mutate categories/channels
onChatItemSelected: ... // `id` is available for selected chat id
categoryPopupMenu: StatusPopupMenu { // optional popup menu for category items
property string categoryId // define this property to have it hydrated with correct id and make it available inside menu items
...
}
popupMenu: StatusPopupMenu { ... } // optional popup menu for whole list, will be triggered with right-click
}
```
Closes#133
Pascal Precht
Alexandra Betouni
B.Melnik
Boris Melnik
