I want to prevent that when the user hits ENTER to select a Suggestion in the SuggestBox, that this Key event is bubbling up.
I have this code in the wrapping Composite :
Event.addNativePreviewHandler(new Event.NativePreviewHandler() {
#Override
public void onPreviewNativeEvent(NativePreviewEvent event) {
if (event.getTypeInt() == Event.KEYEVENTS) {
int key = event.getNativeEvent().getKeyCode();
if (key == KeyCodes.KEY_ENTER) {
event.cancel();
}
}
}
});
But this handler is never called.
I can't tell why your method is not working. But I have an alternative approach. Add a key event listener for suggest box. If the enter key is pressed, cancel the propagation of the event.
suggestBox.addKeyPressHandler(new KeyPressHandler() {
#Override
public void onKeyPress(KeyPressEvent event) {
int key = event.getNativeEvent().getKeyCode();
if (key == KeyCodes.KEY_ENTER) {
event.stopPropagation();
}
}
});
This worked better for me:
suggestBox.addKeyPressHandler(new KeyPressHandler() {
#Override
public void onKeyPress(KeyPressEvent event) {
int key = event.getNativeEvent().getKeyCode();
if (key == KeyCodes.KEY_ENTER) {
event.getNativeEvent().preventDefault();
}
}
});
#Jen,
This code restricts the action of the 'enter' key-press in the textarea (if suggestBox associates with the text area), even when suggestion list is not shown.
While my suggestion list is showing, pressing the 'ENTER' key triggered the event-handler addSelectionHandler() where I want to stop the propagation (addKeyPressHandler event-handler should not be triggered)
Related
Is there a way to give the user a prompt window popup when clicking the remove field button?
enabling the remove button :
setCanRemoveRecords(true);
When I click the red remove button, I want a confirmation box ask me if I want to delete it, yes or no. What should I use to bring that up?
Should I be adding something into
#Override
public void removeData(Record group)
{
...
}
Here are the options:
Use addCellClickHandler on ListGrid and perform operation based on cell no
Add addRecordClickHandler on ListGridField itself that is used for delete icon
I prefer last option.
Sample code:
final ListGrid countryGrid = new ListGrid();
...
countryGrid.setWarnOnRemoval(true);
countryGrid.setCanRemoveRecords(true);
ListGridField ls = new ListGridField();
countryGrid.setRemoveFieldProperties(ls);
ls.setHoverCustomizer(new HoverCustomizer() {
#Override
public String hoverHTML(Object value, ListGridRecord record, int rowNum, int colNum) {
// System.out.println(colNum);
return "click here to delete this record";
}
});
ls.addRecordClickHandler(new RecordClickHandler() {
#Override
public void onRecordClick(final RecordClickEvent event) {
SC.confirm("Are you sure?", new BooleanCallback() {
#Override
public void execute(Boolean value) {
if (value == null || !value) {
event.cancel();
}
}
});
}
});
/*countryGrid.addCellClickHandler(new CellClickHandler() {
#Override
public void onCellClick(final CellClickEvent event) {
// column number having delete icon
// System.out.println(event.getColNum());
if (event.getColNum() == 3) {
SC.confirm("Are you sure", new BooleanCallback() {
#Override
public void execute(Boolean value) {
if (value == null || !value) {
event.cancel();
}
}
});
}
}
});*/
You can use the following methods:
ListGrid#setWarnOnRemoval for showing the warning message and
ListGrid#setWarnOnRemovalMessage for setting a customized message.
Refer documentation.
I am trying to capture keyboard events when there isn't a widget with the focus. I tried adding this to a composite widget :
addDomHandler(new KeyPressHandler(){
public void onKeyPress(KeyPressEvent event) {
logger.info("onKeyPress: "+event);
}
}, KeyPressEvent.getType());
but I am not trapping the keyboard events. I'd like to be able to determine when the Ctrl key is press whilst a mousedown event is occuring. How can I do that?
Use MouseDownHandler:
MouseDownHandler mouseDownHandler = new MouseDownHandler() {
#Override
public void onMouseDown(MouseDownEvent event) {
if (event.isControlKeyDown()) {
// do something
}
}
};
myCompositeWidget.addDomHandler(mouseDownHandler, MouseDownEvent.getType());
What I'm trying to do is fire an enter key press event in GWT.
This is my keyhandler:
itemBox.addKeyDownHandler(new KeyDownHandler() {
public void onKeyDown(KeyDownEvent event) {
if(event.getNativeKeyCode == KeyCodes.KEY_ENTER) {
// do something
}
Then later I wanna fire an enter key press event but I can't seem to figure out how I do this. I wanna do something like KeyDownEvent.setNativeKeyCode(KEY_ENTER).
textBox.fireEvent(new KeyDownEvent(null));
Is it possible to set these parameters?
You can fire the event using DomEvent.fireNativeEvent, instead of textBox.fireEvent.
Here is a working example how to do this:
final TextBox tb = new TextBox();
tb.addKeyDownHandler(new KeyDownHandler() {
#Override
public void onKeyDown(KeyDownEvent event) {
if(event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
Window.alert("enter!");
}
}
});
Button b = new Button("keyevent");
b.addClickHandler(new ClickHandler() {
#Override
public void onClick(ClickEvent event) {
DomEvent.fireNativeEvent(Document.get().createKeyDownEvent(false, false, false, false, KeyCodes.KEY_ENTER), tb);
}
});
RootPanel.get().add(tb);
RootPanel.get().add(b);
Tell me, how to make it impossible to close the window which extends "org.eclipse.swt.widgets.Dialog" by Esc key?
my code is here:
Add a listener to shlTimeDiagramsWindow on SWT.Traverse. If the event is escape key, we set the event for that to false. You can add the below snippet code to method open(int coordX, int coordY).
shlTimeDiagramsWindow.addListener(SWT.Traverse, new Listener() {
#Override
public void handleEvent(Event event) {
if (event.character == SWT.ESC)
{
System.out.println("escape key");
event.doit = false;
}
}
});
I want to disable the anchor link event when it clicked one time. I used anchor.setenabled(false) but nothing happend. When I click the same button again the event e is true. I want false at that time.
public void onCellClick(GridPanel grid, int rowIndex, int colindex,EventObject e)
{
if(rowIndex==0 && colindex==2){
tomcatHandler = "Start";
anchorStart.setEnabled(false);
}else if(rowIndex==0 && colindex==3){
tomcatHandler = "Stop";
****anchorStop.setEnabled(false);
anchorStart.setEnabled(false);
anchorRestart.setEnabled(true);****
}else if(rowIndex==0 &&colindex==4){
tomcatHandler = "Restart";
anchorRestart.setEnabled(false);
}
AdminService.Util.getInstance().tomcat(tomcatHandler,new AsyncCallback<String>() {
#Override
public void onSuccess(String result) {
imageChangeEvent(result);
}
#Override
public void onFailure(Throwable caught) {
}
});}
Anchors in GWT have always had a problem with setEnabled() because HTML doesn't support such a property. A quick workaround is to create a new widget that subclasses GWT's Anchor, adding the following override:
#Override
public void onBrowserEvent(Event event) {
switch (DOM.eventGetType(event)) {
case Event.ONDBLCLICK:
case Event.ONFOCUS:
case Event.ONCLICK:
if (!isEnabled()) {
return;
}
break;
}
super.onBrowserEvent(event);
}
This disables the passing of the browser event to GWT's Anchor class (summarily disabling all related handlers) when the link is double clicked, focused or clicked and is in a disabled state.
Source
It doesn't seem to actually disable the anchor, but it does retain the status that has been set with anchor.setEnabled(), so just test that within your handler e.g.
myAnchor.addClickHandler(new ClickHandler() {
#Override
public void onClick(ClickEvent evt) {
// write to filter and then call reload
if (((Anchor) evt.getSource()).isEnabled()) {
//do stuff
}
}
});