/**
* Sets the selection state of the receiver.
*
* <p>When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, it is selected when
* it is checked (which some platforms draw as a pushed in button).
*
* @param selected the new selection state
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setSelection(boolean selected) {
checkWidget();
if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return;
long /*int*/ hwnd = parent.handle;
int fsState = (int) /*64*/ OS.SendMessage(hwnd, OS.TB_GETSTATE, id, 0);
/*
* Feature in Windows. When TB_SETSTATE is used to set the
* state of a tool item, the item redraws even when the state
* has not changed. The fix is to detect this case and avoid
* setting the state.
*/
if (((fsState & OS.TBSTATE_CHECKED) != 0) == selected) return;
if (selected) {
fsState |= OS.TBSTATE_CHECKED;
} else {
fsState &= ~OS.TBSTATE_CHECKED;
}
OS.SendMessage(hwnd, OS.TB_SETSTATE, id, fsState);
/*
* Bug in Windows. When a tool item with the style
* BTNS_CHECK or BTNS_CHECKGROUP is selected and then
* disabled, the item does not draw using the disabled
* image. The fix is to use the disabled image in all
* image lists for the item.
*
* NOTE: This means that the image list must be updated
* when the selection changes in a disabled tool item.
*/
if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
if (!getEnabled() || !parent.getEnabled()) {
updateImages(false);
}
}
}
public void setImage(Image image) {
checkWidget();
if ((style & SWT.SEPARATOR) != 0) return;
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
super.setImage(image);
updateImages(getEnabled() && parent.getEnabled());
}
/**
* Enables the receiver if the argument is <code>true</code>, and disables it otherwise.
*
* <p>A disabled control is typically not selectable from the user interface and draws with an
* inactive or "grayed" look.
*
* @param enabled the new enabled state
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setEnabled(boolean enabled) {
checkWidget();
OS.UIElement_IsEnabled(handle, enabled);
updateImages(enabled && parent.getEnabled());
if (arrowHandle != 0) {
OS.UIElement_Opacity(arrowHandle, enabled ? 1 : 0.4);
}
}
/**
* Enables the receiver if the argument is <code>true</code>, and disables it otherwise.
*
* <p>A disabled control is typically not selectable from the user interface and draws with an
* inactive or "grayed" look.
*
* @param enabled the new enabled state
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setEnabled(boolean enabled) {
checkWidget();
long /*int*/ hwnd = parent.handle;
int fsState = (int) /*64*/ OS.SendMessage(hwnd, OS.TB_GETSTATE, id, 0);
/*
* Feature in Windows. When TB_SETSTATE is used to set the
* state of a tool item, the item redraws even when the state
* has not changed. The fix is to detect this case and avoid
* setting the state.
*/
if (((fsState & OS.TBSTATE_ENABLED) != 0) == enabled) return;
if (enabled) {
fsState |= OS.TBSTATE_ENABLED;
state &= ~DISABLED;
} else {
fsState &= ~OS.TBSTATE_ENABLED;
state |= DISABLED;
}
OS.SendMessage(hwnd, OS.TB_SETSTATE, id, fsState);
if ((style & SWT.SEPARATOR) == 0) {
if (image != null) updateImages(enabled && parent.getEnabled());
}
}
void HandleMouseLeave(int sender, int e) {
if (!checkEvent(e)) return;
updateImages(getEnabled() && parent.getEnabled());
}
