本文整理汇总了Java中org.eclipse.swt.dnd.DND.FEEDBACK_INSERT_BEFORE属性的典型用法代码示例。如果您正苦于以下问题：Java DND.FEEDBACK_INSERT_BEFORE属性的具体用法？Java DND.FEEDBACK_INSERT_BEFORE怎么用？Java DND.FEEDBACK_INSERT_BEFORE使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.eclipse.swt.dnd.DND的用法示例。
在下文中一共展示了DND.FEEDBACK_INSERT_BEFORE属性的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getDropSelection
@Override
public Object getDropSelection(final Widget item, final Position position, final int dropFeedback) {
final TreeNodeImpl node = items.get(item);
if (node != null) {
if ((dropFeedback & DND.FEEDBACK_INSERT_BEFORE) != 0) {
return new TreeDropLocationSpiImpl(node, TreeDropPositionSpi.BEFORE);
}
else if ((dropFeedback & DND.FEEDBACK_INSERT_AFTER) != 0) {
return new TreeDropLocationSpiImpl(node, TreeDropPositionSpi.AFTER);
}
else if ((dropFeedback & DND.FEEDBACK_SELECT) != 0) {
return new TreeDropLocationSpiImpl(node, TreeDropPositionSpi.ON);
}
}
return null;
}
示例2: dragOver
public void dragOver(DropTargetEvent event) {
event.feedback = DND.FEEDBACK_SELECT;
float location = computeRelativeLocation(event);
if (location > THRESHOLD) {
event.feedback = DND.FEEDBACK_INSERT_AFTER;
} else {
event.feedback = DND.FEEDBACK_INSERT_BEFORE;
}
// always provide expand/scroll capability when dragging
event.feedback |= DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL;
}
示例3: getFeedback
/**
* Get the feedback given the semantics
*
* @param semantics
* @return the feedback to use.
*/
private int getFeedback(InsertionSemantics semantics) {
switch (semantics) {
case BEFORE: return DND.FEEDBACK_INSERT_BEFORE;
case ON: return DND.FEEDBACK_SELECT | DND.FEEDBACK_EXPAND;
case AFTER: return DND.FEEDBACK_INSERT_AFTER;
default: return DND.FEEDBACK_NONE;
}
}
示例4: setFeedback
private void setFeedback(DropTargetEvent event, int location) {
if (feedbackEnabled) {
switch (location) {
case LOCATION_BEFORE:
event.feedback = DND.FEEDBACK_INSERT_BEFORE;
break;
case LOCATION_AFTER:
event.feedback = DND.FEEDBACK_INSERT_AFTER;
break;
case LOCATION_ON:
default:
event.feedback = DND.FEEDBACK_SELECT;
break;
}
}
// Explicitly inhibit SELECT feedback if desired
if (!selectFeedbackEnabled) {
event.feedback &= ~DND.FEEDBACK_SELECT;
}
if (expandEnabled) {
event.feedback |= DND.FEEDBACK_EXPAND;
}
if (scrollEnabled) {
event.feedback |= DND.FEEDBACK_SCROLL;
}
}
示例5: setFeedback
private void setFeedback(DropTargetEvent event, int location) {
if (feedbackEnabled) {
switch (location) {
case LOCATION_BEFORE:
event.feedback = DND.FEEDBACK_INSERT_BEFORE;
break;
case LOCATION_AFTER:
event.feedback = DND.FEEDBACK_INSERT_AFTER;
break;
case LOCATION_ON:
default:
event.feedback = DND.FEEDBACK_SELECT;
break;
}
}
// Explicitly inhibit SELECT feedback if desired
if (!selectFeedbackEnabled) {
event.feedback &= ~DND.FEEDBACK_SELECT;
}
if (expandEnabled) {
event.feedback |= DND.FEEDBACK_EXPAND;
}
if (scrollEnabled) {
event.feedback |= DND.FEEDBACK_SCROLL;
}
}
示例6: dragOver
@Override
public void dragOver(DropTargetEvent event) {
super.dragOver(event);
// Overrides feedback: by default is DND.FEEDBACK_SELECT
feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL | DND.FEEDBACK_EXPAND;
boolean shouldFeedBack = true;
if (PaletteSourceTransfer.getInstance().isSupportedType(event.currentDataType)) {
shouldFeedBack = false;
}
// Handles feedback for objects that can be ordered
if (shouldFeedBack && getCurrentOperation() == DND.DROP_MOVE) {
Object targetObject = getCurrentTarget();
Object sourceObject = getSelectedObject();
if ((sourceObject != null) && (targetObject != null)) {
// Source and target objects must be different
if (!sourceObject.equals(targetObject)) {
if ((sourceObject instanceof TreeObject) && (targetObject instanceof TreeObject)) {
// Source and target objects can be ordered
if ((sourceObject instanceof IOrderableTreeObject) && (targetObject instanceof IOrderableTreeObject)) {
// Source and target objects must have the same parent
if (((TreeObject)sourceObject).getParent().equals(((TreeObject)targetObject).getParent())) {
boolean srcInherited = false;
if (sourceObject instanceof DatabaseObjectTreeObject) srcInherited = ((DatabaseObjectTreeObject)sourceObject).isInherited;
else if (sourceObject instanceof IPropertyTreeObject) srcInherited = ((IPropertyTreeObject)sourceObject).isInherited();
// Source object musn't be inherited
if (!srcInherited) {
int currentLocation = getCurrentLocation();
switch (currentLocation) {
case LOCATION_BEFORE:
feedback = DND.FEEDBACK_INSERT_BEFORE;
break;
case LOCATION_AFTER:
feedback = DND.FEEDBACK_INSERT_AFTER;
break;
case LOCATION_ON:
default:
feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL | DND.FEEDBACK_EXPAND;
break;
}
}
}
}
}
}
}
}
// Set feedback
event.feedback = feedback;
}
示例7: checkEffect
int checkEffect(int effect) {
// Some effects are mutually exclusive. Make sure that only one of the mutually exclusive effects has been specified.
if ((effect & DND.FEEDBACK_SELECT) != 0) effect = effect & ~DND.FEEDBACK_INSERT_AFTER & ~DND.FEEDBACK_INSERT_BEFORE;
if ((effect & DND.FEEDBACK_INSERT_BEFORE) != 0) effect = effect & ~DND.FEEDBACK_INSERT_AFTER;
return effect;
}
示例8: dragOver
@Override
public void dragOver(DropTargetEvent event) {
event.feedback = DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL;
IStructuredSelection structuredSelection = (IStructuredSelection) LocalSelectionTransfer
.getTransfer().getSelection();
if (structuredSelection.size() == 1) {
Object element = structuredSelection.getFirstElement();
if (element instanceof AvroNode) {
AvroNode sourceNode = (AvroNode) element;
TreeItem item = (TreeItem) event.item;
if (item != null) {
AvroNode targetNode = nodeConverter.convertToAvroNode(item.getData());
if (targetNode == sourceNode) {
event.detail = DND.DROP_NONE;
} else {
int tolerance = dropPolicy.getTargetPositionTolerance();
Point pt = schemaViewer.getTreeViewer().getTree().toControl(event.x, event.y);
Rectangle bounds = item.getBounds();
if (pt.y < bounds.y + tolerance) {
position = TargetPosition.BEFORE;
event.feedback |= DND.FEEDBACK_INSERT_BEFORE;
}
else if (pt.y > bounds.y + bounds.height - tolerance) {
position = TargetPosition.AFTER;
event.feedback |= DND.FEEDBACK_INSERT_AFTER;
}
else {
position = TargetPosition.UPON;
event.feedback |= DND.FEEDBACK_SELECT;
}
event.detail = dropPolicy.dragOver(sourceNode, targetNode, position);
}
}
} else {
event.detail = DND.DROP_NONE;
}
}
}