I am trying to create a cellgrid. That would be something like a
cellList with the difference that it should be able to use all arrows
to navigate throw the grid. I have tried it with a normal cellList but
it seems only possible to use up and down arrow. The function below
from package "com.google.gwt.user.cellview.client" shows that
situation. It is a final function so I can't override it. I have also
tried with a table but it works (logicaly) with rows and columns and
Ishould work just with cells. I would like to use all the advantages
that we can find in cellList (selection and so on), thus use a normal
grid seems not to resolve the problem. The best solution were to add
to more cases to the next function. Someone knows how could I achive
it?
desired solution:
Add this code to the case of the next function:
case KeyCodes.KEY_LEFT:
presenter.keyboardPrev();
event.preventDefault();
return;
case KeyCodes.KEY_RIGHT:
presenter.keyboardNext();
event.preventDefault();
return;
Chnage this code of the case statement:
case KeyCodes.KEY_DOWN:
presenter.keyboardDownt();
event.preventDefault();
return;
case KeyCodes.KEY_UP:
presenter.keyboardUp();
event.preventDefault();
return;
Original function in package
com.google.gwt.user.cellview.client.AbstractHasData
@Override
public final void onBrowserEvent(Event event) {
CellBasedWidgetImpl.get().onBrowserEvent(this, event);
// Ignore spurious events (such as onblur) while we refresh the
table.
if (isRefreshing) {
return;
}
// Verify that the target is still a child of this widget. IE
fires focus
// events even after the element has been removed from the DOM.
EventTarget eventTarget = event.getEventTarget();
if (!Element.is(eventTarget)
|| !getElement().isOrHasChild(Element.as(eventTarget))) {
return;
}
super.onBrowserEvent(event);
String eventType = event.getType();
if ("focus".equals(eventType)) {
// Remember the focus state.
isFocused = true;
onFocus();
} else if ("blur".equals(eventType)) {
// Remember the blur state.
isFocused = false;
onBlur();
} else if ("keydown".equals(eventType) && !
isKeyboardNavigationSuppressed()) {
// A key event indicates that we have focus.
isFocused = true;
// Handle keyboard navigation. Prevent default on navigation
events to
// prevent default scrollbar behavior.
int keyCode = event.getKeyCode();
switch (keyCode) {
case KeyCodes.KEY_DOWN:
presenter.keyboardNext();
event.preventDefault();
return;
case KeyCodes.KEY_UP:
presenter.keyboardPrev();
event.preventDefault();
return;
case KeyCodes.KEY_PAGEDOWN:
presenter.keyboardNextPage();
event.preventDefault();
return;
case KeyCodes.KEY_PAGEUP:
presenter.keyboardPrevPage();
event.preventDefault();
return;
case KeyCodes.KEY_HOME:
presenter.keyboardHome();
event.preventDefault();
return;
case KeyCodes.KEY_END:
presenter.keyboardEnd();
event.preventDefault();
return;
case 32:
// Prevent the list box from scrolling.
event.preventDefault();
return;
}
}
// Let subclasses handle the event now.
onBrowserEvent2(event);
}
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