Java Code Examples for com.vaadin.client.WidgetUtil#findWidget()

/**
 * Checks if the location is a valid drop location
 *
 * @param elementOver
 *            The element to check
 * @return
 */
private boolean isLocationValid(Element elementOver) {
    Element weekGridElement = calendarConnector.getWidget().getWeekGrid()
            .getElement();
    Element timeBarElement = calendarConnector.getWidget().getWeekGrid()
            .getTimeBar().getElement();

    Element todayBarElement = null;
    if (calendarConnector.getWidget().getWeekGrid().hasToday()) {
        todayBarElement = calendarConnector.getWidget().getWeekGrid()
                .getDateCellOfToday().getTodaybarElement();
    }

    // drops are not allowed in:
    // - weekday header
    // - allday event list
    // - todaybar
    // - timebar
    // - items
    return DOM.isOrHasChild(weekGridElement, elementOver)
            && !DOM.isOrHasChild(timeBarElement, elementOver)
            && todayBarElement != elementOver
            && (WidgetUtil.findWidget(elementOver,
                    DateCellDayItem.class) == null);
}
 

/**
 * Updates the drop details while dragging. This is needed to ensure client
 * side criterias can validate the drop location.
 * 
 * @param event
 *            The drag event
 */
protected void updateDragDetails(VDragEvent event) {
    if (event.getElementOver() == null) {
        return;
    }

    StackItem tab = WidgetUtil.findWidget(event.getElementOver(),
            StackItem.class);

    if (tab != null && getElement().isOrHasChild(tab.getElement())) {
        Map<String, Object> dropDetails = event.getDropDetails();

        int index = getTabPosition(tab);
        dropDetails.put(Constants.DROP_DETAIL_TO, index);

        VerticalDropLocation location = getDropLocation(tab, event);
        dropDetails.put(Constants.DROP_DETAIL_VERTICAL_DROP_LOCATION,
                location);

        MouseEventDetails details = MouseEventDetailsBuilder
                .buildMouseEventDetails(event.getCurrentGwtEvent(),
                        getElement());
        dropDetails.put(Constants.DROP_DETAIL_MOUSE_EVENT,
                details.serialize());
    }
}
 

@Override
protected Slot getSlot(Element e, NativeEvent event) {
    Slot slot = null;
    if (getLayout().getElement() == e) {
        // Most likely between components, use the closest one in that case
        slot = findSlotVertically(12, event);
    } else {
        slot = WidgetUtil.findWidget(e, Slot.class);
        if (slot == null) {
            return null;
        }
        VAbstractOrderedLayout layout = VDragDropUtil.getSlotLayout(slot);
        while (layout != getLayout() && getLayout().getElement()
                .isOrHasChild(e.getParentElement())) {
            e = e.getParentElement();
            slot = WidgetUtil.findWidget(e, Slot.class);
            if (slot == null) {
                return null;
            }
            layout = VDragDropUtil.getSlotLayout(slot);
        }
    }
    return slot;
}
 

@Override
protected Slot getSlot(Element e, NativeEvent event) {
    Slot slot = null;
    if (getLayout().getElement() == e) {
        // Most likely between components, use the closes one in that case
        slot = findSlotHorizontally(12, event);
    } else {
        slot = WidgetUtil.findWidget(e, Slot.class);
        if (slot == null) {
            return null;
        }
        VAbstractOrderedLayout layout = VDragDropUtil.getSlotLayout(slot);
        while (layout != getLayout() && getLayout().getElement()
                .isOrHasChild(e.getParentElement())) {
            e = e.getParentElement();
            slot = WidgetUtil.findWidget(e, Slot.class);
            if (slot == null) {
                return null;
            }
            layout = VDragDropUtil.getSlotLayout(slot);
        }
    }

    return slot;
}
 

/**
 * Updates the drop details while dragging. This is needed to ensure client
 * side criterias can validate the drop location.
 * 
 * @param event
 *            The drag event
 */
protected void updateDragDetails(VDragEvent event) {
    Element over = event.getElementOver();

    Widget content = WidgetUtil.findWidget(over, null);

    if (content != null && content != this) {
        event.getDropDetails().put(Constants.DROP_DETAIL_OVER_CLASS,
                content.getClass().getName());
    } else {
        event.getDropDetails().put(Constants.DROP_DETAIL_OVER_CLASS,
                this.getClass().getName());
    }

    // Add mouse event details
    MouseEventDetails details = MouseEventDetailsBuilder
            .buildMouseEventDetails(event.getCurrentGwtEvent(),
                    getElement());
    event.getDropDetails().put(Constants.DROP_DETAIL_MOUSE_EVENT,
            details.serialize());
}
 

@Override
protected Slot getSlot(Element e, NativeEvent event) {
    Slot slot = null;
    if (getLayout().getElement() == e) {
        // Most likely between components, use the closest one in that case
        slot = findSlotVertically(12, event);
    } else {
        slot = WidgetUtil.findWidget(e, Slot.class);
        if (slot == null) {
            return null;
        }
        VAbstractOrderedLayout layout = VDragDropUtil.getSlotLayout(slot);
        while (layout != getLayout() && getLayout().getElement()
                .isOrHasChild(e.getParentElement())) {
            e = e.getParentElement();
            slot = WidgetUtil.findWidget(e, Slot.class);
            if (slot == null) {
                return null;
            }
            layout = VDragDropUtil.getSlotLayout(slot);
        }
    }
    return slot;
}
 

@Override
public void onBrowserEvent(Event event) {
    super.onBrowserEvent(event);

    if (isEnabled()) {
        switch (DOM.eventGetType(event)) {
            case Event.ONMOUSEOVER:
                Element targetElement = DOM.eventGetTarget(event);
                Object targetWidget = WidgetUtil.findWidget(targetElement, null);
                if (targetWidget instanceof MenuItemWidget) {
                    setFocusedItem((MenuItemWidget) targetWidget);
                }
                break;
            case Event.ONMOUSEOUT:
                if (!focused) {
                    setFocusedItem(null);
                }
                break;
        }
    }
}
 

@Override
public void onBrowserEvent(Event event) {
    super.onBrowserEvent(event);

    // if not click event or some other event was fired
    if (event.getTypeInt() != Event.ONCLICK) {
        return;
    }

    // if day cell has expanded events
    if (getElement().getClassName().contains("scrollable")) {
        return;
    }

    Element target = Element.as(event.getEventTarget());
    Widget widget = WidgetUtil.findWidget(target);
    if ((widget instanceof CubaSimpleDayCell) || target.getClassName().contains("spacer")) {
        CubaCalendarWidget cubaCalendar = (CubaCalendarWidget) calendar;
        if (cubaCalendar.getDayClickListener() != null) {
            cubaCalendar.getDayClickListener().accept(getDate());
        }
    }
}
 

protected void handleMouseOver(@SuppressWarnings("unused") Event.NativePreviewEvent event, Element target) {
    if (!getState().customLayout && getWidget().popupHasChild(target)) {
        Widget widget = WidgetUtil.findWidget(target, null);
        if ((widget instanceof VButton
                || widget instanceof VUpload
                || widget instanceof CubaFileUploadWidget)) {

            VButton button;
            if (widget instanceof VButton) {
                button = (VButton) widget;
            } else if (widget instanceof CubaFileUploadWidget) {
                button = ((CubaFileUploadWidget) widget).getSubmitButton();
            } else {
                button = ((VUpload) widget).submitButton;
            }
            if (!button.getStyleName().contains(SELECTED_ITEM_STYLE)) {
                getWidget().childWidgetFocused(button);
                button.setFocus(true);
            }
        }
    }
}
 

protected void handleOnBlur(BlurEvent event) {
    removeStyleName(MODIFIED_STYLENAME);

    if (BrowserInfo.get().isIE()) {
        if (iePreventBlur) {
            textField.setFocus(true);
            iePreventBlur = false;
        } else {
            resetComponentState();
        }
    } else {
        if (!suggestionsPopup.isShowing()) {
            resetComponentState();
            return;
        }

        EventTarget eventTarget = event.getNativeEvent().getRelatedEventTarget();
        if (eventTarget == null) {
            resetComponentState();
            return;
        }

        if (Element.is(eventTarget)) {
            Widget widget = WidgetUtil.findWidget(Element.as(eventTarget), null);
            if (widget != suggestionsContainer) {
                resetComponentState();
            }
        }
    }
}
 

protected boolean isLastChild(Element target) {
    Widget widget = WidgetUtil.findWidget(target, null);
    Widget widgetParent = widget.getParent();
    FlowPanel layout = (FlowPanel) widgetParent.getParent();
    int widgetIndex = layout.getWidgetIndex(widget);
    return widgetIndex == layout.getWidgetCount() - 1;
}
 

@Override
protected boolean isWidgetAllowsClickHandling(Element targetElement, NativeEvent nativeEvent) {
    // By default, clicking on widget renderer prevents row selection.
    // We want to allow row selection. Every time selection is changed,
    // all renderers render their content, as the result, components rendered by
    // ComponentRenderer lose focus because they are replaced with new instances,
    // so we prevent click handling for Focus widgets.
    Widget widget = WidgetUtil.findWidget(targetElement, null);
    return !isWidgetOrParentFocusable(widget);
}
 

@Override
public int getTabPosition(Widget tabWidget) {
    StackItem tab = WidgetUtil.findWidget(tabWidget.getElement(),
            StackItem.class);
    if (tab != null && getElement().isOrHasChild(tab.getElement())) {
        int i = 0;
        for (StackItem itm : getStackItems()) {
            if (tab == itm) {
                return i;
            }
            i++;
        }
    }
    return -1;
}
 

@Override
protected boolean isEventHandlerShouldHandleEvent(Element targetElement, GridEvent<JsonObject> event) {
    if (!event.getDomEvent().getType().equals(Event.MOUSEDOWN)
            && !event.getDomEvent().getType().equals(Event.CLICK)) {
        return super.isEventHandlerShouldHandleEvent(targetElement, event);
    }

    // By default, clicking on widget renderer prevents cell focus changing
    // for some widget renderers we want to allow focus changing
    Widget widget = WidgetUtil.findWidget(targetElement, null);
    return !(isWidgetOrParentFocusable(widget))
            || isClickThroughEnabled(targetElement);
}
 

@Override
protected boolean isEventHandlerShouldHandleEvent(Element targetElement, GridEvent<JsonObject> event) {
    if (!event.getDomEvent().getType().equals(Event.MOUSEDOWN)
            && !event.getDomEvent().getType().equals(Event.CLICK)) {
        return super.isEventHandlerShouldHandleEvent(targetElement, event);
    }

    // By default, clicking on widget renderer prevents cell focus changing
    // for some widget renderers we want to allow focus changing
    Widget widget = WidgetUtil.findWidget(targetElement, null);
    return !(isWidgetOrParentFocusable(widget))
            || isClickThroughEnabled(targetElement);
}
 

@Override
protected void dragAccepted(VDragEvent drag) {
    deEmphasis();
    currentTargetElement = drag.getElementOver();
    currentTargetDay = WidgetUtil.findWidget(currentTargetElement,
            SimpleDayCell.class);
    emphasis();
}
 

@Override
protected void dragAccepted(VDragEvent drag) {
    deEmphasis();
    currentTargetElement = drag.getElementOver();
    currentTargetDay = WidgetUtil.findWidget(currentTargetElement,
            DateCell.class);
    emphasis();
}
 

/**
 * Emphasisizes a container element
 * 
 * @param element
 */
protected void emphasis(Element element, VDragEvent event) {

    // Find the tab
    StackItem tab = WidgetUtil.findWidget(element, StackItem.class);
    if (tab != null && getElement().isOrHasChild(tab.getElement())
            && currentlyEmphasised != tab) {
        VerticalDropLocation location = getDropLocation(tab, event);

        if (location == VerticalDropLocation.MIDDLE) {
            if (tab.isOpen()) {
                tab.addStyleName(CLASSNAME_OVER);
            } else {
                tab.getWidget(0).addStyleName(CLASSNAME_OVER);
            }
        } else if (!spacer.isAttached()) {
            if (location == VerticalDropLocation.TOP) {
                insertSpacer(spacer, getElement(), getWidgetIndex(tab));
                tab.setHeight(
                        (tab.getOffsetHeight() - spacer.getOffsetHeight())
                                + "px");
            } else if (location == VerticalDropLocation.BOTTOM) {
                insertSpacer(spacer, getElement(), getWidgetIndex(tab) + 1);
                int newHeight = tab.getOffsetHeight()
                        - spacer.getOffsetHeight();
                if (getWidgetIndex(spacer) == getWidgetCount() - 1) {
                    newHeight -= spacer.getOffsetHeight();
                }
                if (newHeight >= 0) {
                    tab.setHeight(newHeight + "px");
                }
            }
        }
        currentlyEmphasised = tab;
    }
}
 

protected boolean isClickThroughEnabled(Element e) {
    Widget widget = WidgetUtil.findWidget(e, null);
    return widget instanceof HasClickSettings &&
            ((HasClickSettings) widget).isClickThroughEnabled();
}
 

protected boolean isClickThroughEnabled(Element e) {
    Widget widget = WidgetUtil.findWidget(e, null);
    return widget instanceof HasClickSettings &&
            ((HasClickSettings) widget).isClickThroughEnabled();
}