Re: Textarea KeyUpHandler not working
Hi Thomas,
thanks for your explanation. I had that setElement(rootPanel.getElement())
thing in my mind, but I didn't really got what it does until your
explanation. Now it makes much sense to me what happened.
Cheers,
Marco
Am Mittwoch, 28. November 2012 14:45:51 UTC+1 schrieb Thomas Broyer:
>
>
>
> On Wednesday, November 28, 2012 1:40:18 PM UTC+1, marco wrote:
>>
>> Ok I fixed it, with the following changes
>>
>> -public class ValidatableTextarea extends ComplexPanel
>> +public class ValidatableTextarea extends FlowPanel
>> - private FlowPanel rootPanel;
>> protected TextArea input;
>> private Label errorLabel;
>>
>> @UiConstructor
>> public ValidatableTextarea() {
>> input = new TextArea();
>> - rootPanel = new FlowPanel();
>> - rootPanel.add(input);
>> + add(input)
>>
>> - setElement(rootPanel.getElement());
>> }
>> ...
>> public void setText(String text) {
>> input.setText(String Text);
>> }
>> ...
>> public void addKeyUpHandler(KeyUpHandler keyUpHandler) {
>> input.addKeyUpHandler(keyUpHandler);
>> }
>>
>> Don't know why but it's working now.
>>
>
> I know why: setElement() is only meant to be used when you create your own
> Widget, not when you extend an existing one. The root of your problem was
> actually using rootPanel;getElement() as the element for another widget,
> yet adding widgets to rootPanel (which is never *attached* to the DOM:
> its element is "physically" attached, by way of the ValidatableTextArea,
> but the FlowPanel itself is not "logically" attached.
>
> Now, instead of *extending* FlowPanel, you should extend Composite
> instead, and use a FlowPanel with setWidget (more or less reverting to your
> previous code, fixing it: ComplexPanel→Composite, setElement→setWidget)
>
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Re: Textarea KeyUpHandler not working
On Wednesday, November 28, 2012 1:40:18 PM UTC+1, marco wrote:
>
> Ok I fixed it, with the following changes
>
> -public class ValidatableTextarea extends ComplexPanel
> +public class ValidatableTextarea extends FlowPanel
> - private FlowPanel rootPanel;
> protected TextArea input;
> private Label errorLabel;
>
> @UiConstructor
> public ValidatableTextarea() {
> input = new TextArea();
> - rootPanel = new FlowPanel();
> - rootPanel.add(input);
> + add(input)
>
> - setElement(rootPanel.getElement());
> }
> ...
> public void setText(String text) {
> input.setText(String Text);
> }
> ...
> public void addKeyUpHandler(KeyUpHandler keyUpHandler) {
> input.addKeyUpHandler(keyUpHandler);
> }
>
> Don't know why but it's working now.
>
I know why: setElement() is only meant to be used when you create your own
Widget, not when you extend an existing one. The root of your problem was
actually using rootPanel;getElement() as the element for another widget,
yet adding widgets to rootPanel (which is never *attached* to the DOM: its
element is "physically" attached, by way of the ValidatableTextArea, but
the FlowPanel itself is not "logically" attached.
Now, instead of *extending* FlowPanel, you should extend Composite instead,
and use a FlowPanel with setWidget (more or less reverting to your previous
code, fixing it: ComplexPanel→Composite, setElement→setWidget)
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Re: Textarea KeyUpHandler not working
Ok I fixed it, with the following changes
-public class ValidatableTextarea extends ComplexPanel
+public class ValidatableTextarea extends FlowPanel
- private FlowPanel rootPanel;
protected TextArea input;
private Label errorLabel;
@UiConstructor
public ValidatableTextarea() {
input = new TextArea();
- rootPanel = new FlowPanel();
- rootPanel.add(input);
+ add(input)
- setElement(rootPanel.getElement());
}
...
public void setText(String text) {
input.setText(String Text);
}
...
public void addKeyUpHandler(KeyUpHandler keyUpHandler) {
input.addKeyUpHandler(keyUpHandler);
}
Don't know why but it's working now.
Cheers
Am Mittwoch, 28. November 2012 08:34:43 UTC+1 schrieb marco:
>
> Hi there,
>
> I'm trying to implement a counter for a textarea. Something like this is
> working for me
>
> final TextArea textArea = new TextArea();final Label counter = new
> Label("Number of characters: 0");...private void addlistener() {
> textArea.addKeyUpHandler(new KeyUpHandler() {
> public void onKeyUp(KeyUpEvent keyUpEvent) {
> counter.setText(" Number of
> characters:"+textArea.getText().length());
> }
> });
>
>
> In my project the TextArea is enhanced e.g. for displaying validation errors.
>
>
> public class ValidatableTextarea extends ComplexPanel
> private FlowPanel rootPanel;
> protected TextArea input;
> private Label errorLabel;
>
> @UiConstructor
> public ValidatableTextarea() {
> input = new TextArea();
> rootPanel = new FlowPanel();
> rootPanel.add(input);
> setElement(rootPanel.getElement());
> }
> ...
> public void setText(String text) {
> input.setText(String Text);
> }
> ...
> public void addKeyUpHandler(KeyUpHandler keyUpHandler) {
> input.addKeyUpHandler(keyUpHandler);
> }
>
> My Presenter is calling ValidatableTextarea.addKeyUpHandler onBind but
> the keyhandler seems not to be added. The same thing happens when I call
> ValidatableTextarea.setText
> My Presenter is a dialog, so when I call those functions in Presenter.openat
> least
> ValidatableTextarea.setText is working and the given text is displayed,
> but there is still no keyUpHandler working.
>
> So is there any magic working I don't see? Any event I can listen to be
> sure that my ValidatableTextarea is ready to accept my keyUpHandler? Or
> is my given Handler somehow overwritten?
>
> Thanks in advance,
> Marco
>
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Textarea KeyUpHandler not working
Hi there,
I'm trying to implement a counter for a textarea. Something like this is
working for me
final TextArea textArea = new TextArea();final Label counter = new
Label("Number of characters: 0");...private void addlistener() {
textArea.addKeyUpHandler(new KeyUpHandler() {
public void onKeyUp(KeyUpEvent keyUpEvent) {
counter.setText(" Number of
characters:"+textArea.getText().length());
}
});
In my project the TextArea is enhanced e.g. for displaying validation errors.
public class ValidatableTextarea extends ComplexPanel
private FlowPanel rootPanel;
protected TextArea input;
private Label errorLabel;
@UiConstructor
public ValidatableTextarea() {
input = new TextArea();
rootPanel = new FlowPanel();
rootPanel.add(input);
setElement(rootPanel.getElement());
}
...
public void setText(String text) {
input.setText(String Text);
}
...
public void addKeyUpHandler(KeyUpHandler keyUpHandler) {
input.addKeyUpHandler(keyUpHandler);
}
My Presenter is calling ValidatableTextarea.addKeyUpHandler onBind but the
keyhandler seems not to be added. The same thing happens when I call
ValidatableTextarea.setText
My Presenter is a dialog, so when I call those functions in Presenter.openat
least
ValidatableTextarea.setText is working and the given text is displayed, but
there is still no keyUpHandler working.
So is there any magic working I don't see? Any event I can listen to be
sure that my ValidatableTextarea is ready to accept my keyUpHandler? Or is
my given Handler somehow overwritten?
Thanks in advance,
Marco
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