Java Code Examples for com.vaadin.event.dd.DragAndDropEvent#getTransferable()

private void processTargetDrop(final DragAndDropEvent event) {
    final com.vaadin.event.dd.TargetDetails targetDetails = event.getTargetDetails();
    final TableTransferable transferable = (TableTransferable) event.getTransferable();

    final TargetTable targetTable = (TargetTable) transferable.getSourceComponent();
    final Set<Long> targetList = targetTable.getSelectedEntitiesByTransferable(transferable);
    final String targTagName = HawkbitCommonUtil.removePrefix(targetDetails.getTarget().getId(),
            SPUIDefinitions.TARGET_TAG_ID_PREFIXS);

    if (!hasTargetUpdatePermission()) {
        return;
    }

    final TargetTagAssignmentResult result = targetTable.toggleTagAssignment(targetList, targTagName);

    publishAssignTargetTagEvent(result);

    publishUnAssignTargetTagEvent(targTagName, result);
}
 

/**
 * Called when a component changed location within the layout
 * 
 * @param event
 *            The drag and drop event
 */
@Override
protected void handleComponentReordering(DragAndDropEvent event) {
    AbsoluteLayoutTargetDetails details = (AbsoluteLayoutTargetDetails) event
            .getTargetDetails();
    DDAbsoluteLayout layout = (DDAbsoluteLayout) details.getTarget();
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    Component component = transferable.getComponent();

    // Get top-left pixel position
    int leftPixelPosition = details.getRelativeLeft();
    int topPixelPosition = details.getRelativeTop();

    ComponentPosition position = layout.getPosition(component);

    position.setLeft((float) leftPixelPosition, Sizeable.UNITS_PIXELS);
    position.setTop((float) topPixelPosition, Sizeable.UNITS_PIXELS);
}
 

/**
 * Validation for drag event.
 *
 * @param dragEvent
 * @return
 */
private Boolean doValidations(final DragAndDropEvent dragEvent) {
    final Component compsource = dragEvent.getTransferable().getSourceComponent();
    Boolean isValid = Boolean.TRUE;
    if (compsource instanceof Table && !isComplexFilterViewDisplayed) {
        final TableTransferable transferable = (TableTransferable) dragEvent.getTransferable();
        final Table source = transferable.getSourceComponent();

        if (!source.getId().equals(UIComponentIdProvider.DIST_TABLE_ID)) {
            notification.displayValidationError(i18n.getMessage(UIMessageIdProvider.MESSAGE_ACTION_NOT_ALLOWED));
            isValid = Boolean.FALSE;
        } else {
            if (getDropppedDistributionDetails(transferable).size() > 1) {
                notification.displayValidationError(i18n.getMessage("message.onlyone.distribution.dropallowed"));
                isValid = Boolean.FALSE;
            }
        }
    } else {
        notification.displayValidationError(i18n.getMessage(UIMessageIdProvider.MESSAGE_ACTION_NOT_ALLOWED));
        isValid = Boolean.FALSE;
    }
    return isValid;
}
 

private void processDistributionDrop(final DragAndDropEvent event) {

        final com.vaadin.event.dd.TargetDetails targetDetails = event.getTargetDetails();

        final TableTransferable transferable = (TableTransferable) event.getTransferable();
        final AbstractTable<?> source = (AbstractTable<?>) transferable.getSourceComponent();

        final Set<Long> distSelected = source.getSelectedEntitiesByTransferable(transferable);

        final String distTagName = HawkbitCommonUtil.removePrefix(targetDetails.getTarget().getId(),
                SPUIDefinitions.DISTRIBUTION_TAG_ID_PREFIXS);

        final List<String> tagsClickedList = distFilterParameters.getClickedDistSetTags();
        final DistributionSetTagAssignmentResult result = distributionSetManagement.toggleTagAssignment(distSelected,
                distTagName);

        notification.displaySuccess(HawkbitCommonUtil.createAssignmentMessage(distTagName, result, i18n));
        if (result.getUnassigned() >= 1 && !tagsClickedList.isEmpty()) {
            eventBus.publish(this, TargetFilterEvent.FILTER_BY_TAG);
        }
    }
 

public void drop(DragAndDropEvent event) {
    // Get information about the drop
    TargetDetails details = event.getTargetDetails();
    DropTarget layout = details.getTarget();
    Component source = event.getTransferable().getSourceComponent();

    if (event.getTransferable().getData("html5Data") != null) {
        handleHTML5Drop(event);
    } else if (layout == source) {
        handleComponentReordering(event);
    } else if (event.getTransferable() instanceof LayoutBoundTransferable) {
        LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
                .getTransferable();
        Component comp = transferable.getComponent();
        if (comp == layout) {
            if (comp.getParent() instanceof DDAbsoluteLayout) {
                handleDropFromAbsoluteParentLayout(event);
            }
        } else {
            handleDropFromLayout(event);
        }
    }
}
 

@Override
protected void handleComponentReordering(DragAndDropEvent event) {
    // Component re-ordering
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    CssLayoutTargetDetails details = (CssLayoutTargetDetails) event
            .getTargetDetails();
    DDCssLayout layout = (DDCssLayout) details.getTarget();
    Component comp = transferable.getComponent();
    int idx = details.getOverIndex();

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

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

private void filterByDroppedDist(final DragAndDropEvent event) {
    if (doValidations(event)) {
        final TableTransferable tableTransferable = (TableTransferable) event.getTransferable();
        final Table source = tableTransferable.getSourceComponent();
        if (!UIComponentIdProvider.DIST_TABLE_ID.equals(source.getId())) {
            return;
        }
        final Set<Long> distributionIdSet = getDropppedDistributionDetails(tableTransferable);
        if (CollectionUtils.isEmpty(distributionIdSet)) {
            return;
        }
        final Long distributionSetId = distributionIdSet.iterator().next();
        final Optional<DistributionSet> distributionSet = distributionSetManagement.get(distributionSetId);
        if (!distributionSet.isPresent()) {
            notification.displayWarning(i18n.getMessage("distributionset.not.exists"));
            return;
        }
        final DistributionSetIdName distributionSetIdName = new DistributionSetIdName(distributionSet.get());
        getManagementUIState().getTargetTableFilters().setDistributionSet(distributionSetIdName);
        addFilterTextField(distributionSetIdName);
    }
}
 

@Override
protected void handleComponentReordering(DragAndDropEvent event) {
    GridLayoutTargetDetails details = (GridLayoutTargetDetails) event
            .getTargetDetails();
    DDGridLayout layout = (DDGridLayout) details.getTarget();
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    Component comp = transferable.getComponent();

    int row = details.getOverRow();
    int column = details.getOverColumn();
    if (layout.getComponent(column, row) == null) {
        layout.removeComponent(comp);
        addComponent(event, comp, column, row);
    }
}
 

/**
 * Validate the drop.
 *
 * @param event
 *            DragAndDropEvent reference
 * @return Boolean
 */
private Boolean validate(final DragAndDropEvent event) {
    final Transferable transferable = event.getTransferable();
    final Component compsource = transferable.getSourceComponent();
    if (!(compsource instanceof AbstractTable)) {
        uiNotification.displayValidationError(getI18n().getMessage(getActionNotAllowedMessage()));
        return false;
    }

    final TableTransferable tabletransferable = (TableTransferable) transferable;

    final AbstractTable<?> source = (AbstractTable<?>) tabletransferable.getSourceComponent();

    if (!validateIfSourceIsTargetTable(source) && !hasTargetUpdatePermission()) {
        return false;
    }

    final Set<Long> deletedEntityByTransferable = source.getSelectedEntitiesByTransferable(tabletransferable);
    if (deletedEntityByTransferable.isEmpty()) {
        final String actionDidNotWork = getI18n().getMessage("message.action.did.not.work");
        uiNotification.displayValidationError(actionDidNotWork);
        return false;
    }

    return true;
}
 

@Override
protected void onDropEventFromTable(final DragAndDropEvent event) {
    final TableTransferable transferable = (TableTransferable) event.getTransferable();
    final AbstractTable<?> source = (AbstractTable<?>) transferable.getSourceComponent();
    final Set<Long> softwareModulesIdList = source.getSelectedEntitiesByTransferable(transferable);
    selectDraggedEntities(source, softwareModulesIdList);

    final AbstractSelectTargetDetails dropData = (AbstractSelectTargetDetails) event.getTargetDetails();

    final Object distItemId = dropData.getItemIdOver();
    if (distItemId != null) {
        handleSmToDsAssignment(softwareModulesIdList, (long) distItemId);
    }
}
 

private void assignTargetToDs(final DragAndDropEvent event) {
    final TableTransferable transferable = (TableTransferable) event.getTransferable();
    final TargetTable targetTable = (TargetTable) transferable.getSourceComponent();
    final Set<Long> targetIdSet = targetTable.getSelectedEntitiesByTransferable(transferable);
    selectDraggedEntities(targetTable, targetIdSet);
    final AbstractSelectTargetDetails dropData = (AbstractSelectTargetDetails) event.getTargetDetails();
    final Object distItemId = dropData.getItemIdOver();
    assignTargetToDs(getItem(distItemId), targetManagement.get(targetIdSet));
}
 

@Override
protected void handleDropFromLayout(DragAndDropEvent event) {
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    ComponentContainer source = (ComponentContainer) transferable
            .getSourceComponent();
    HorizontalSplitPanelTargetDetails details = (HorizontalSplitPanelTargetDetails) event
            .getTargetDetails();
    Component component = transferable.getComponent();
    DDHorizontalSplitPanel panel = (DDHorizontalSplitPanel) details
            .getTarget();

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

    if (details.getDropLocation() == HorizontalDropLocation.LEFT) {
        // Dropped in the left area
        panel.setFirstComponent(component);

    } else if (details.getDropLocation() == HorizontalDropLocation.RIGHT) {
        // Dropped in the right area
        panel.setSecondComponent(component);
    }
}
 

private void assignDsToTarget(final DragAndDropEvent event) {
    final TableTransferable transferable = (TableTransferable) event.getTransferable();
    final AbstractTable<?> source = (AbstractTable<?>) transferable.getSourceComponent();

    final Set<Long> dsIds = filterDistributionSetsToAssign(source.getSelectedEntitiesByTransferable(transferable));
    if (dsIds.isEmpty()) {
        getNotification().displayWarning(getI18n().getMessage(DISTRIBUTIONSET_NOT_EXISTS));
        return;
    }

    selectDraggedEntities(source, dsIds);
    final AbstractSelectTargetDetails dropData = (AbstractSelectTargetDetails) event.getTargetDetails();
    final Object targetItemId = dropData.getItemIdOver();
    LOG.debug("Drop target: {} ", targetItemId);
    if (targetItemId == null) {
        getNotification().displayWarning(getI18n().getMessage(TARGETS_NOT_EXISTS, ""));
        return;
    }

    final Long targetId = (Long) targetItemId;
    selectDroppedEntities(targetId);
    final Optional<Target> target = targetManagement.get(targetId);
    if (!target.isPresent()) {
        getNotification().displayWarning(getI18n().getMessage(TARGETS_NOT_EXISTS, ""));
        return;
    }

    final List<DistributionSet> distributionSets = distributionSetManagement.get(dsIds);
    if (distributionSets.isEmpty()) {
        getNotification().displayWarning(getI18n().getMessage(DISTRIBUTIONSET_NOT_EXISTS));
        return;
    }
    openConfirmationWindowForAssignments(target.get(), distributionSets);
}
 

private boolean isFilesDropped(final DragAndDropEvent event) {
    if (event.getTransferable() instanceof WrapperTransferable) {
        final Html5File[] files = ((WrapperTransferable) event.getTransferable()).getFiles();
        return files != null;
    }
    return false;
}
 

@Override
public void drop(final DragAndDropEvent event) {
    if (validate(event) && isNoTagAssigned(event)) {
        final TableTransferable tbl = (TableTransferable) event.getTransferable();
        final Table source = tbl.getSourceComponent();

        if (source.getId().equals(UIComponentIdProvider.DIST_TABLE_ID)) {
            processDistributionDrop(event);
        }
    }
}
 

/**
 * Handle a drop from another layout
 * 
 * @param event
 *            The drag and drop event
 */
@Override
protected void handleDropFromLayout(DragAndDropEvent event) {
    AbsoluteLayoutTargetDetails details = (AbsoluteLayoutTargetDetails) event
            .getTargetDetails();
    LayoutBoundTransferable transferable = (LayoutBoundTransferable) event
            .getTransferable();
    Component component = transferable.getComponent();
    Component source = event.getTransferable().getSourceComponent();
    DDAbsoluteLayout layout = (DDAbsoluteLayout) details.getTarget();
    int leftPixelPosition = details.getRelativeLeft();
    int topPixelPosition = details.getRelativeTop();

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

    // remove component from source
    if (source instanceof ComponentContainer) {
        ((ComponentContainer) source).removeComponent(component);
    } else if (source instanceof SingleComponentContainer) {
        ((SingleComponentContainer) source).setContent(null);
    }

    // Add component to absolute layout
    layout.addComponent(component, "left:" + leftPixelPosition + "px;top:"
            + topPixelPosition + "px");
}
 

/**
 * 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();
    HorizontalLayoutTargetDetails details = (HorizontalLayoutTargetDetails) 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
    HorizontalDropLocation loc = details.getDropLocation();
    if (loc == HorizontalDropLocation.CENTER
            || loc == HorizontalDropLocation.RIGHT) {
        idx++;
    }

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

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

/**
 * 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);
    }

}
 

/**
 * 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();
    HorizontalLayoutTargetDetails details = (HorizontalLayoutTargetDetails) 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
    HorizontalDropLocation loc = details.getDropLocation();
    if (loc == HorizontalDropLocation.CENTER
            || loc == HorizontalDropLocation.RIGHT) {
        idx++;
    }

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

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

/**
 * 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);
    }
}