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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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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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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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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