Java Code Examples for com.vaadin.client.ui.dd.VDragEvent#getElementOver()

The following examples show how to use com.vaadin.client.ui.dd.VDragEvent#getElementOver() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: VDDPanel.java    From cuba with Apache License 2.0 6 votes vote down vote up 
/**
 * 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());
}
Example 2
Source File: VDDAccordion.java    From cuba with Apache License 2.0 6 votes vote down vote up 
/**
 * 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());
    }
}
Example 3
Source File: CalendarWeekDropHandler.java    From calendar-component with Apache License 2.0 5 votes vote down vote up 
@Override
protected void dragAccepted(VDragEvent drag) {
    deEmphasis();
    currentTargetElement = drag.getElementOver();
    currentTargetDay = WidgetUtil.findWidget(currentTargetElement,
            DateCell.class);
    emphasis();
}
Example 4
Source File: CalendarMonthDropHandler.java    From calendar-component with Apache License 2.0 5 votes vote down vote up 
@Override
protected void dragAccepted(VDragEvent drag) {
    deEmphasis();
    currentTargetElement = drag.getElementOver();
    currentTargetDay = WidgetUtil.findWidget(currentTargetElement,
            SimpleDayCell.class);
    emphasis();
}
Example 5
Source File: VDDHorizontalSplitPanel.java    From cuba with Apache License 2.0 5 votes vote down vote up 
/**
 * 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();
    if (over == null) {
        return;
    }

    // Resolve where the drop was made
    HorizontalDropLocation location = null;
    Widget content = null;
    if (firstContainer.isOrHasChild(over)) {
        location = HorizontalDropLocation.LEFT;
        content = Util.findWidget(firstContainer, null);
    } else if (splitter.isOrHasChild(over)) {
        location = HorizontalDropLocation.CENTER;
        content = this;
    } else if (secondContainer.isOrHasChild(over)) {
        location = HorizontalDropLocation.RIGHT;
        content = Util.findWidget(secondContainer, null);
    }

    event.getDropDetails()
            .put(Constants.DROP_DETAIL_HORIZONTAL_DROP_LOCATION, location);

    if (content != null) {
        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());
}
Example 6
Source File: VDDCssLayout.java    From cuba with Apache License 2.0 5 votes vote down vote up 
private void updatePlaceHolderStyleProperties(VDragEvent drag) {
    int width = 0;
    int height = 0;
    String className = "";

    placeHolderElement.setClassName(DRAG_SHADOW_STYLE_NAME);

    ComponentConnector draggedConnector = (ComponentConnector) drag
            .getTransferable()
            .getData(Constants.TRANSFERABLE_DETAIL_COMPONENT);
    if (draggedConnector != null) {
        height = Util.getRequiredHeight(draggedConnector.getWidget());
        width = Util.getRequiredWidth(draggedConnector.getWidget());
        className = draggedConnector.getWidget().getElement()
                .getClassName();
        className = className.replaceAll(
                VLayoutDragDropMouseHandler.ACTIVE_DRAG_SOURCE_STYLENAME,
                "");
        placeHolderElement.addClassName(className);
    } else if (drag.getElementOver() != getElement()) {
        width = 3;
        height = drag.getElementOver().getOffsetHeight();
    }

    placeHolderElement.getStyle().setWidth(width, Unit.PX);
    placeHolderElement.getStyle().setHeight(height, Unit.PX);
}
Example 7
Source File: VDDVerticalSplitPanel.java    From cuba with Apache License 2.0 5 votes vote down vote up 
/**
 * 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();

    // Resolve where the drop was made
    VerticalDropLocation location = null;
    Widget content = null;
    if (firstContainer.isOrHasChild(over)) {
        location = VerticalDropLocation.TOP;
        content = Util.findWidget(firstContainer, null);
    } else if (splitter.isOrHasChild(over)) {
        location = VerticalDropLocation.MIDDLE;
        content = this;
    } else if (secondContainer.isOrHasChild(over)) {
        location = VerticalDropLocation.BOTTOM;
        content = Util.findWidget(secondContainer, null);
    }

    event.getDropDetails().put(Constants.DROP_DETAIL_VERTICAL_DROP_LOCATION,
            location);

    if (content != null) {
        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());
}
Example 8
Source File: VDDTabSheet.java    From cuba with Apache License 2.0 4 votes vote down vote up 
/**
 * 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 element = event.getElementOver();
    if (element == null)
        return;

    if (tabBar.getElement().isOrHasChild(element)) {
        Widget w = Util.findWidget(element, null);

        if (w == tabBar) {
            // Ove3r the spacer

            // Add index
            event.getDropDetails().put(Constants.DROP_DETAIL_TO,
                    tabBar.getWidgetCount() - 1);

            // Add drop location
            event.getDropDetails().put(
                    Constants.DROP_DETAIL_HORIZONTAL_DROP_LOCATION,
                    HorizontalDropLocation.RIGHT);

        } else {

            // Add index
            event.getDropDetails().put(Constants.DROP_DETAIL_TO,
                    getTabPosition(w));

            // Add drop location
            HorizontalDropLocation location = VDragDropUtil
                    .getHorizontalDropLocation(DOM.asOld(element),
                            Util.getTouchOrMouseClientX(
                                    event.getCurrentGwtEvent()),
                            tabLeftRightDropRatio);
            event.getDropDetails().put(
                    Constants.DROP_DETAIL_HORIZONTAL_DROP_LOCATION,
                    location);
        }

        // Add mouse event details
        MouseEventDetails details = MouseEventDetailsBuilder
                .buildMouseEventDetails(event.getCurrentGwtEvent(),
                        getElement());
        event.getDropDetails().put(Constants.DROP_DETAIL_MOUSE_EVENT,
                details.serialize());
    }
}
Example 9
Source File: VDDCssLayout.java    From cuba with Apache License 2.0 4 votes vote down vote up 
/**
 * 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();
    if (placeHolderElement.isOrHasChild(over)) {
        // Dragging over the placeholder
        return;
    }

    Widget widget = (Widget) Util.findWidget(over, null);
    if (widget == null) {
        // Null check
        return;
    }

    int offset = 0;
    int index = -1;
    for (int i = 0; i < getElement().getChildCount(); i++) {
        Element child = getElement().getChild(i).cast();
        if (child.isOrHasChild(placeHolderElement)) {
            offset--;
        } else if (child.isOrHasChild(widget.getElement())) {
            index = i + offset;
            break;
        }
    }
    event.getDropDetails().put(Constants.DROP_DETAIL_TO, index);

    /*
     * The horizontal position within the cell
     */
    event.getDropDetails().put(
            Constants.DROP_DETAIL_HORIZONTAL_DROP_LOCATION,
            getHorizontalDropLocation(widget, event));

    /*
     * The vertical position within the cell
     */
    event.getDropDetails().put(Constants.DROP_DETAIL_VERTICAL_DROP_LOCATION,
            getVerticalDropLocation(widget, event));

    // Add mouse event details
    MouseEventDetails details = MouseEventDetailsBuilder
            .buildMouseEventDetails(event.getCurrentGwtEvent(),
                    getElement());
    event.getDropDetails().put(Constants.DROP_DETAIL_MOUSE_EVENT,
            details.serialize());
}
Example 10
Source File: VDDFormLayoutDropHandler.java    From cuba with Apache License 2.0 4 votes vote down vote up 
private Widget getTableRowWidgetFromDragEvent(VDragEvent event) {

        /**
         * Find the widget of the row
         */
        Element e = event.getElementOver();

        if (getLayout().table.getRowCount() == 0) {
            /*
             * Empty layout
             */
            return getLayout();
        }

        /**
         * Check if element is inside one of the table widgets
         */
        for (int i = 0; i < getLayout().table.getRowCount(); i++) {
            Element caption = getLayout().table
                    .getWidget(i, getLayout().COLUMN_CAPTION).getElement();
            Element error = getLayout().table
                    .getWidget(i, getLayout().COLUMN_ERRORFLAG).getElement();
            Element widget = getLayout().table
                    .getWidget(i, getLayout().COLUMN_WIDGET).getElement();
            if (caption.isOrHasChild(e) || error.isOrHasChild(e)
                    || widget.isOrHasChild(e)) {
                return getLayout().table.getWidget(i,
                        getLayout().COLUMN_WIDGET);
            }
        }

        /*
         * Is the element a element outside the row structure but inside the
         * layout
         */
        Element rowElement = getLayout().getRowFromChildElement(e,
                getLayout().getElement());
        if (rowElement != null) {
            Element tableElement = rowElement.getParentElement();
            for (int i = 0; i < tableElement.getChildCount(); i++) {
                Element r = tableElement.getChild(i).cast();
                if (r.equals(rowElement)) {
                    return getLayout().table.getWidget(i,
                            getLayout().COLUMN_WIDGET);
                }
            }
        }

        /*
         * Element was not found in rows so defaulting to the form layout
         * instead
         */
        return getLayout();
    }