I want to make something like the contact selection in OS 5.0 while composing message
For that I have made an autocompletefield with contacts as datasource. Now I want to add the user input, that is what he types into the drop down list which appears in autocompletefield so that if the contact is not available in the phonebook he can use the number.
Check this link: How to get the selected item as String in a Blackberry AutoCompleteField?
public void onSelect(Object selection, int type) {
super.onSelect(selection, type);
if(selection != null) {
String selectionAsString = getEditField().getText();
// Do whatever else you need to do with the String.
}
}
Related
I'm using a Grid in Vaadin 14. The grid is in multi-selection mode.
The selection handler takes a couple of seconds to complete and I'm calling setItems(...) at the end to update the items in the grid.
When the user selects another row while the previous selection handler is still running, I get an "Unknown key" error similar to the one described in https://github.com/vaadin/vaadin-grid-flow/issues/322, even though the new set of items still contains the selected item (another object instance but same according to equals()). This seems to be because the keys in the KeyMapper have already been changed due to setItems(), so the key coming from the client is not present anymore.
Is there a way to work around this, for example by disabling selection while the previous request is in progress?
UPDATE
To work around this Vaadin bug, I'm also calling setPageSize() with the exact number of items as argument. But it seems the same problem occurs even if I don't call setPageSize(), so it's probably due to setItems().
Do not change the grids items inside a SelectionListener.
You can still do all the things you wanted, but setting the items anew is not actually needed. In fact it will only create problems as you are experiencing now.
While working at this answer, I realized you will need to do your own Checkbox Column in order to be able to do actions for the one item that was just "selected", instead of removing all then add all selected ones (because much better performance). Here is how that could look.
// in my code samples, a `Foo` item can have many `Bar` items. The grid is of type Bar.
Grid.Column customSelectionColumn = grid.addComponentColumn(item -> {
Checkbox isSelected = new Checkbox();
isSelected.setValue(someParentFoo.getBars().contains(item));
isSelected.addValueChangeListener(event -> {
boolean newSelectedValue = event.getValue();
if(newSelectedValue){
someParentFoo.getBars().add(item)
} else {
someParentFoo.getBars().remove(item);
}
fooRepository.save(someParentFoo);
});
});
// make a Checkbox that selects all in the header
Checkbox toggleSelectAll = new Checkbox();
toggleSelectAll.addValueChangeListener(event -> {
if(event.getValue()){
someParentFoo.getBars().addAll(allGridItems);
} else {
someParentFoo.getBars().removeAll(allGridItems);
}
fooRepository.save(someParentFoo);
grid.getDataProvider().refreshAll(); // updates custom checkbox value of each item
});
gridHeaderRow.getCell(customSelectionColumn).setComponent(toggleSelectAll);
I solved this problem. Vaadin use data as key in HashMap. You need calc hashCode use immutable data fields. For example
public class TestData {
private int id;
private String name;
public TestData(int id) {
this.id = id;
}
#Override
public int hashCode() {
return Objects.hash(id);
}
public int getId() {
return id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
I have only one edit text field to accept email or phone number. how to change the input type based on the 1st character ? based on user input i need to perform different operations.. The main thing is i should identify whether that is email or phone number. how to do this?
In your, EditText set a TextWatcher which calls a function to check if the text is email or is a phone number.
Get the text from your TextView like :
String text = textView.getText().toString();
Adding the listener to your TextView :
textView.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(....){}
#Override
public void beforeTextChanged(...){}
#Override
public void afterTextChanged(Editable s) {
if(isEmail(text)){//do your stuff}
if(isPhone(text)){//do your stuff}
}
}
Your methods would look something like this:
public static boolean isEmail(String text) {
String expression = "^[\\w\\.-]+#([\\w\\-]+\\.)+[A-Z]{2,4}$";
Pattern p = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(text);
return m.matches();
}
public static boolean isPhone(String text) {
if(!TextUtils.isEmpty(text)){
return TextUtils.isDigitsOnly(text);
} else{
return false;
}
}
This might not be possible with just checking the first digit. Though you can put validations inside onTextChanged method.
Novo Lucas's answer is correct.
My Views :
First thing is that you can't know input type using the first letter cause some email addresses begin with numbers.
On button click you can identify type by knowing if the text contains only numbers or alphanumeric characters. For more info about code you can search it on Google. I will try to add code after some time. Good Luck
I am unable to get my custom compoenent to be validated in the dynamic form. I tried many versions but it is not working as expected. For e.g. either the label is not showing in BOLD to indicate the field is mandatory and it aloows to save the form without entering anything in the field. Only when the user enters something in the field and deletes it, then the red icon is displayed to the user that the field is mandatory.I dont know what i am missing. please help. code is below
telnumber = new CustomTelephoneTextItem();
telnumber.setName("tel");
telnumber.setTitle("Tel");
telnumber.setTitle(nerpweb.clientFactory.getMessages().tel());
Below is my Custom TextItem which i am using in the above class
public class CustomTelephoneTextItem extends CanvasItem
{
textField_value = new CustomIntegerItem();
textField_value.setShowTitle(false);
textField_value.setWidth(100);
textField_value.setRequired(true);
form.setItems(textField_value, textField_code);
form.validate();
setWrapTitle(false);
this.setCanvas(form);
First, if you want to item title showin bold, you must call item's setRequired(true).
in your code is telnumber.setRequired(true);
Second, if you want to validate item on form.validate(), you must override validate() function in your item and write validation code in this function.
in your code is call form.validate() in CustomTelephoneTextItem validate() function
Here is the code to be implemented to validate custom component
This code will go in your Custom component which you will implement
#Override
public Object getValue()
{
if (validate() && textField_value.getValue() != null)
return textField_value.getValue();
return null;
}
#Override
public void setRequired(Boolean required) {
super.setRequired(true);
}
#Override
public Boolean validate() {
return super.validate();
}
#Override
public void setValidators(Validator... validators) {
textField_value.setValidators(validators);
}
Then in the class where you will create the custom component you will call the setRequired() method,like so
telnumber.setRequired(true);
I want to override getValueFieldProperties for FilterBuilde.
My requirement is for some specific type of field I want to show selection, for Value field instead of simple text box.
I have visited following:
http://code.google.com/p/smartgwt/source/browse/tags/2.5/main/src/com/smartgwt/client/widgets/form/FilterBuilder.java?r=1796
thanks.
I found the solution for the requirement requirement is, for some specific type of field, I want to show selection, for Value field instead of simple text box.
for (DataSourceField field : dataSource.getFields()) {
String type = field.getAttribute("serverType");
if (type!=null && type.equals("SPECIFIC_TYPE")) {
TreeMap<String, String> map = new TreeMap<String, String>();
map.put("1", "value 1");
map.put("2", "value 2");
field.setValueMap(map);
}
}
I have two text boxes when i input in these text boxes , by clicking the print button , it should directly printed with the connected printer. can anybody help me how should i do this?
The example below is a basic idea of using/inheriting the PrintDocument class:
using System.Drawing.Printing;
public class PrintDoc : PrintDocument
{
// there are other properties you can enter here
// for instance, page orientation, size, font, etc.
private string textout;
public string PrintText
{
get { return textout; }
set { textout = value; }
}
// you will also need to add any appropriate class ctor
// experiment with the PrintDocument class to learn more
}
Then from your form's button event, call something like:
public void PrintDocument()
{
//instance PrintDocument class
PrintDoc printer = new PrintDoc();
//set PrintText
printer.PrintText = myTextBox.Text;
printer.Print(); // very straightforward
}