Java Code Examples for com.vaadin.shared.ui.dd.VerticalDropLocation#MIDDLE

The following examples show how to use com.vaadin.shared.ui.dd.VerticalDropLocation#MIDDLE . 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: VDDGridLayout.java    From cuba with Apache License 2.0 6 votes vote down vote up 
/**
 * Returns the vertical drop location
 * 
 * @param cell
 *            The cell details
 * @param event
 *            The drag event
 * @return
 */
protected VerticalDropLocation getVerticalDropLocation(CellDetails cell,
        VDragEvent event) {

    // Get the vertical location
    VerticalDropLocation vdetail;
    int y = Util.getTouchOrMouseClientY(event.getCurrentGwtEvent())
            - getAbsoluteTop() - cell.y;

    assert(y >= 0 && y <= cell.height);

    if (y < cell.height * cellTopBottomDropRatio) {
        vdetail = VerticalDropLocation.TOP;
    } else if (y < cell.height * (1.0 - cellTopBottomDropRatio)) {
        vdetail = VerticalDropLocation.MIDDLE;
    } else {
        vdetail = VerticalDropLocation.BOTTOM;
    }
    return vdetail;
}
Example 2
Source File: VDragDropUtil.java    From cuba with Apache License 2.0 6 votes vote down vote up 
/**
 * Get the vertical drop location in a ordered layout
 * 
 * @param element
 *            The target element or cell
 * @param offsetHeight
 *            The height of the cell
 * @param clientY
 *            The width of the cell
 * @param topBottomRatio
 *            The ratio of the cell
 * @return The location of the drop
 */
public static VerticalDropLocation getVerticalDropLocation(Element element,
        int offsetHeight, int clientY, double topBottomRatio) {

    int absoluteTop = element.getAbsoluteTop();
    int fromTop = clientY - absoluteTop;

    float percentageFromTop = (fromTop / (float) offsetHeight);
    if (percentageFromTop < topBottomRatio) {
        return VerticalDropLocation.TOP;
    } else if (percentageFromTop > 1 - topBottomRatio) {
        return VerticalDropLocation.BOTTOM;
    } else {
        return VerticalDropLocation.MIDDLE;
    }
}
Example 3
Source File: VDDVerticalLayout.java    From cuba with Apache License 2.0 5 votes vote down vote up 
/**
 * Empasises the drop location of the component when hovering over a
 * ĆhildComponentContainer. Passing null as the container removes any
 * previous emphasis.
 * 
 * @param container
 *            The container which we are hovering over
 * @param event
 *            The drag event
 */
protected void emphasis(Widget container, VDragEvent event) {

    // Remove emphasis from previous hovers
    deEmphasis();

    // validate container
    if (container == null
            || !getElement().isOrHasChild(container.getElement())) {
        return;
    }

    currentlyEmphasised = container;

    VerticalDropLocation location = null;

    // Add drop location specific style
    if (currentlyEmphasised != this) {
        location = getVerticalDropLocation(currentlyEmphasised, event);

    } else {
        location = VerticalDropLocation.MIDDLE;
    }

    UIObject.setStyleName(currentlyEmphasised.getElement(), OVER, true);
    UIObject.setStyleName(currentlyEmphasised.getElement(),
            OVER + "-" + location.toString().toLowerCase(), true);
}
Example 4
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 5
Source File: VDDVerticalLayout.java    From cuba with Apache License 2.0 5 votes vote down vote up 
/**
 * Empasises the drop location of the component when hovering over a
 * ĆhildComponentContainer. Passing null as the container removes any
 * previous emphasis.
 * 
 * @param container
 *            The container which we are hovering over
 * @param event
 *            The drag event
 */
protected void emphasis(Widget container, VDragEvent event) {

    // Remove emphasis from previous hovers
    deEmphasis();

    // validate container
    if (container == null
            || !getElement().isOrHasChild(container.getElement())) {
        return;
    }

    currentlyEmphasised = container;

    VerticalDropLocation location = null;

    // Add drop location specific style
    if (currentlyEmphasised != this) {
        location = getVerticalDropLocation(currentlyEmphasised, event);

    } else {
        location = VerticalDropLocation.MIDDLE;
    }

    setStyleName(currentlyEmphasised.getElement(), OVER, true);
    setStyleName(currentlyEmphasised.getElement(),
            OVER + "-" + location.toString().toLowerCase(), true);
}
Example 6
Source File: VDDAccordion.java    From cuba with Apache License 2.0 5 votes vote down vote up 
/**
 * 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;
    }
}
Example 7
Source File: DefaultVerticalLayoutDropHandler.java    From cuba with Apache License 2.0 5 votes vote down vote up 
@Override
protected void handleHTML5Drop(DragAndDropEvent event) {
    VerticalLayoutTargetDetails details = (VerticalLayoutTargetDetails) event
            .getTargetDetails();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();
    int idx = (details).getOverIndex();

    // Increase index if component is dropped after or above a
    // previous
    // component
    VerticalDropLocation loc = (details).getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    Component comp = resolveComponentFromHTML5Drop(event);

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }

}
Example 8
Source File: DefaultVerticalLayoutDropHandler.java    From cuba with Apache License 2.0 5 votes vote down vote up 
@Override
protected void handleHTML5Drop(DragAndDropEvent event) {
    VerticalLayoutTargetDetails details = (VerticalLayoutTargetDetails) event
            .getTargetDetails();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();
    int idx = (details).getOverIndex();

    // Increase index if component is dropped after or above a
    // previous
    // component
    VerticalDropLocation loc = (details).getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    Component comp = resolveComponentFromHTML5Drop(event);

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }

}
Example 9
Source File: DefaultFormLayoutDropHandler.java    From cuba with Apache License 2.0 5 votes vote down vote up 
@Override
protected void handleHTML5Drop(DragAndDropEvent event) {
    FormLayoutTargetDetails details = (FormLayoutTargetDetails) event
            .getTargetDetails();
    int idx = details.getOverIndex();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();

    // Increase index if component is dropped after or above a
    // previous component
    VerticalDropLocation loc = details.getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    // Add component
    if (idx >= 0) {
        layout.addComponent(resolveComponentFromHTML5Drop(event), idx);
    } else {
        layout.addComponent(resolveComponentFromHTML5Drop(event));
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(resolveComponentFromHTML5Drop(event),
                dropAlignment);
    }
}
Example 10
Source File: DefaultVerticalLayoutDropHandler.java    From cuba with Apache License 2.0 4 votes vote down vote up 
/**
 * Called when a component changed location within the layout
 * 
 * @param event
 *            The drag and drop event
 */
@Override
protected void handleComponentReordering(DragAndDropEvent event) {
    // Component re-ordering
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    VerticalLayoutTargetDetails details = (VerticalLayoutTargetDetails) event
            .getTargetDetails();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();
    Component comp = transferable.getComponent();
    int idx = details.getOverIndex();
    int oldIndex = layout.getComponentIndex(comp);

    if (idx == oldIndex) {
        // Index did not change
        return;
    }

    // Detach
    layout.removeComponent(comp);

    // Account for detachment if new index is bigger then old index
    if (idx > oldIndex) {
        idx--;
    }

    // Increase index if component is dropped after or above a previous
    // component
    VerticalDropLocation loc = details.getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }

}
Example 11
Source File: DefaultVerticalLayoutDropHandler.java    From cuba with Apache License 2.0 4 votes vote down vote up 
/**
 * Handle a drop from another layout
 * 
 * @param event
 *            The drag and drop event
 */
@Override
protected void handleDropFromLayout(DragAndDropEvent event) {
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    VerticalLayoutTargetDetails details = (VerticalLayoutTargetDetails) event
            .getTargetDetails();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();
    Component source = event.getTransferable().getSourceComponent();
    int idx = (details).getOverIndex();
    Component comp = transferable.getComponent();

    // Check that we are not dragging an outer layout into an inner
    // layout
    Component parent = layout.getParent();
    while (parent != null) {
        if (parent == comp) {
            return;
        }
        parent = parent.getParent();
    }

    // Detach from old source
    if (source instanceof ComponentContainer) {
        ((ComponentContainer) source).removeComponent(comp);
    } else if (source instanceof SingleComponentContainer) {
        ((SingleComponentContainer) source).setContent(null);
    }

    // Increase index if component is dropped after or above a
    // previous
    // component
    VerticalDropLocation loc = (details).getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }
}
Example 12
Source File: DefaultVerticalLayoutDropHandler.java    From cuba with Apache License 2.0 4 votes vote down vote up 
/**
 * Called when a component changed location within the layout
 * 
 * @param event
 *            The drag and drop event
 */
@Override
protected void handleComponentReordering(DragAndDropEvent event) {
    // Component re-ordering
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    VerticalLayoutTargetDetails details = (VerticalLayoutTargetDetails) event
            .getTargetDetails();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();
    Component comp = transferable.getComponent();
    int idx = details.getOverIndex();
    int oldIndex = layout.getComponentIndex(comp);

    if (idx == oldIndex) {
        // Index did not change
        return;
    }

    // Detach
    layout.removeComponent(comp);

    // Account for detachment if new index is bigger then old index
    if (idx > oldIndex) {
        idx--;
    }

    // Increase index if component is dropped after or above a previous
    // component
    VerticalDropLocation loc = details.getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }

}
Example 13
Source File: DefaultVerticalLayoutDropHandler.java    From cuba with Apache License 2.0 4 votes vote down vote up 
/**
 * Handle a drop from another layout
 * 
 * @param event
 *            The drag and drop event
 */
@Override
protected void handleDropFromLayout(DragAndDropEvent event) {
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    VerticalLayoutTargetDetails details = (VerticalLayoutTargetDetails) event
            .getTargetDetails();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();
    Component source = event.getTransferable().getSourceComponent();
    int idx = (details).getOverIndex();
    Component comp = transferable.getComponent();

    // Check that we are not dragging an outer layout into an inner
    // layout
    Component parent = layout.getParent();
    while (parent != null) {
        if (parent == comp) {
            return;
        }
        parent = parent.getParent();
    }

    // Detach from old source
    if (source instanceof ComponentContainer) {
        ((ComponentContainer) source).removeComponent(comp);
    } else if (source instanceof SingleComponentContainer) {
        ((SingleComponentContainer) source).setContent(null);
    }

    // Increase index if component is dropped after or above a
    // previous
    // component
    VerticalDropLocation loc = (details).getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }
}
Example 14
Source File: DefaultFormLayoutDropHandler.java    From cuba with Apache License 2.0 4 votes vote down vote up 
@Override
protected void handleComponentReordering(DragAndDropEvent event) {
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    FormLayoutTargetDetails details = (FormLayoutTargetDetails) event
            .getTargetDetails();
    DDFormLayout layout = (DDFormLayout) details.getTarget();

    Component comp = transferable.getComponent();
    int idx = details.getOverIndex();
    int oldIdx = layout.getComponentIndex(comp);

    if (idx == oldIdx) {
        // Dropping on myself
        return;
    }

    // Detach
    layout.removeComponent(comp);
    if (idx > 0 && idx > oldIdx) {
        idx--;
    }

    // Increase index if component is dropped after or above a previous
    // component
    VerticalDropLocation loc = details.getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }
}
Example 15
Source File: DefaultFormLayoutDropHandler.java    From cuba with Apache License 2.0 4 votes vote down vote up 
@Override
protected void handleDropFromLayout(DragAndDropEvent event) {
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    FormLayoutTargetDetails details = (FormLayoutTargetDetails) event
            .getTargetDetails();
    AbstractOrderedLayout layout = (AbstractOrderedLayout) details
            .getTarget();
    Component source = event.getTransferable().getSourceComponent();
    int idx = details.getOverIndex();
    Component comp = transferable.getComponent();

    // Check that we are not dragging an outer layout into an inner
    // layout
    Component parent = layout.getParent();
    while (parent != null) {
        if (parent == comp) {
            return;
        }
        parent = parent.getParent();
    }

    // Detach from old source
    if (source instanceof ComponentContainer) {
        ((ComponentContainer) source).removeComponent(comp);
    } else if (source instanceof SingleComponentContainer) {
        ((SingleComponentContainer) source).setContent(null);
    }

    // Increase index if component is dropped after or above a
    // previous
    // component
    VerticalDropLocation loc = (details).getDropLocation();
    if (loc == VerticalDropLocation.MIDDLE
            || loc == VerticalDropLocation.BOTTOM) {
        idx++;
    }

    // Add component
    if (idx >= 0) {
        layout.addComponent(comp, idx);
    } else {
        layout.addComponent(comp);
    }

    // Add component alignment if given
    if (dropAlignment != null) {
        layout.setComponentAlignment(comp, dropAlignment);
    }
}