public static IScriptCommand DetachDragDropAdorner(string adornerLayerVariable = "{AdornerLayer}", string adornerVariable = "{DragDropAdorner}",
IScriptCommand nextCommand = null)
{
return(ScriptCommands.IfAssigned(adornerVariable,
AssignAdornerLayer("PART_DragDropAdorner", adornerLayerVariable, false,
HubScriptCommands.DetachAdorner(adornerLayerVariable, adornerVariable))));
}
/// <summary>
/// Store position minus offset (Point) to destination.
/// </summary>
/// <param name="positionVariable"></param>
/// <param name="offsetVariable"></param>
/// <param name="destinationVariable"></param>
/// <param name="nextCommand"></param>
/// <returns></returns>
public static IScriptCommand OffsetPositionNeg(string positionVariable = "{Position}", string offsetVariable = "{Offset}",
string destinationVariable = "{Position}", IScriptCommand nextCommand = null)
{
string offsetNegVariable = ParameterDic.CombineVariable(offsetVariable, "Neg", true);
return(HubScriptCommands.NegativePosition(offsetVariable, offsetNegVariable,
HubScriptCommands.OffsetPosition(positionVariable, offsetNegVariable, destinationVariable, nextCommand)));
}
public static IScriptCommand IfDependencyProperty <T>(string elementVariable = "{Sender}",
DependencyProperty property = null, ComparsionOperator op = ComparsionOperator.Equals, T value = default(T),
IScriptCommand trueCommand = null, IScriptCommand otherwiseCommand = null)
{
string destinationVariable = ParameterDic.CombineVariable(elementVariable, property.ToString() + "Value");
return(HubScriptCommands.GetDependencyProperty(elementVariable, property, destinationVariable,
ScriptCommands.IfValue(op, destinationVariable, value, trueCommand, otherwiseCommand)));
}
public static IScriptCommand IfMouseGesture(MouseGesture gesture,
IScriptCommand nextCommand = null, IScriptCommand otherwiseCommand = null)
{
string MouseGestureVariable = "{IfMouseGesture-Gesture}";
return
(ScriptCommands.Assign(MouseGestureVariable, gesture, false,
HubScriptCommands.IfMouseGesture(MouseGestureVariable, nextCommand, otherwiseCommand)));
}
/// <summary>
/// Get the property and compare if it's equal to value before setting.
/// </summary>
/// <param name="elementVariable"></param>
/// <param name="property"></param>
/// <param name="value"></param>
/// <param name="ifChanged"></param>
/// <param name="ifUnchanged"></param>
/// <returns></returns>
public static IScriptCommand SetDependencyPropertyIfDifferentValue(string elementVariable,
DependencyProperty property, object value, IScriptCommand ifChanged, IScriptCommand ifUnchanged = null)
{
string valueVariable = ParameterDic.CombineVariable(elementVariable, "Value");
return(HubScriptCommands.GetDependencyProperty(elementVariable, property, valueVariable,
ScriptCommands.IfEquals(valueVariable, value,
ifUnchanged,
SetDependencyPropertyValue(elementVariable, property, value, ifChanged))));
}
/// <summary>
/// Update the DragAdorner's PointerPosition so selected Items will be shown at the spot.
/// </summary>
public static IScriptCommand UpdateAdornerPointerPosition(string adornerVariable = "{DragDrop.Adorner}", IScriptCommand nextCommand = null)
{
string cursorPositionVariable = "{DragDrop.CursorPosition}";
return(HubScriptCommands.AssignCursorPosition(PositionRelativeToType.Window, cursorPositionVariable, false,
ScriptCommands.RunSequence(null,
ScriptCommands.IfEquals(DragDropLiteCommand.DragDropDeviceKey, UIInputType.Touch,
HubScriptCommands.OffsetPositionValue("{DragDrop.CursorPosition}", new Point(-100, -100), "{DragDrop.CursorPosition}")),
ScriptCommands.SetProperty(adornerVariable, (DragAdorner a) => a.PointerPosition, cursorPositionVariable, nextCommand))));
}
public static IScriptCommand AttachDragDropAdorner(string adornerLayerVariable = "{AdornerLayer}", string adornerVariable = "{DragDropAdorner}",
IScriptCommand nextCommand = null)
{
return(AssignAdornerLayer("PART_DragDropAdorner", adornerLayerVariable, false,
new AssignDragDropAdorner()
{
AdornerKey = adornerVariable,
AdornerLayerKey = adornerLayerVariable,
NextCommand = (ScriptCommandBase)HubScriptCommands.AttachAdorner(adornerLayerVariable, adornerVariable, nextCommand),
}));
}
public static IScriptCommand EndLiteDrag(string dragSourceVariable = "{ISupportDrag}",
IScriptCommand nextCommand = null, IScriptCommand failCommand = null)
{
return
(HubScriptCommands.AssignDragMethod(QueryDrag.DragMethodKey,
new DragDropLiteCommand()
{
State = DragDropLiteState.EndLite,
DragSourceKey = dragSourceVariable,
NextCommand = (ScriptCommandBase)nextCommand,
FailCommand = (ScriptCommandBase)failCommand
}));
}
/// <summary>
/// Find ISelectable under cursor over element's datacontext, if it's ISelectable.IsSelected,
/// assign canDragKey to true, otherwise false.
/// </summary>
/// <param name="canDragKey"></param>
/// <returns></returns>
public static IScriptCommand IfItemUnderMouseIsSelected(IScriptCommand trueCommand = null, IScriptCommand otherwiseCommand = null)
{
return
//Calculate a number of positions.
(HubScriptCommands.ObtainPointerPosition(
//Assign the datacontext item of the UIelement that's undermouse to {ItemUnderMouse}
HubScriptCommands.AssignItemUnderMouse("{ItemUnderMouse}", false,
//And If it's exists and selected,
ScriptCommands.IfAssigned("{ItemUnderMouse}",
ScriptCommands.IfNotAssigned("{ItemUnderMouse.IsSelected}", trueCommand,
ScriptCommands.IfTrue("{ItemUnderMouse.IsSelected}", trueCommand,
otherwiseCommand)), otherwiseCommand))));
}
public static IScriptCommand AttachAdorner(string adornerLayerVariable = "{DragDrop.AdornerLayer}",
string adornerVariable = "{DragDrop.Adorner}",
string iSupportDropVariable = "{ISupportDrop}",
string dragMethodVariable = "{DragDrop.DragMethod}",
string draggablesVariable = "{DragDrop.Draggables}",
IScriptCommand nextCommand = null)
{
return(DragDropScriptCommands.DetachAdorner(adornerLayerVariable, adornerVariable,
HubScriptCommands.AttachDragDropAdorner(adornerLayerVariable, adornerVariable,
HubScriptCommands.SetDependencyPropertyValue(adornerVariable, DragAdorner.IsDraggingProperty, true,
DragDropScriptCommands.UpdateAdorner(adornerVariable, iSupportDropVariable,
dragMethodVariable, draggablesVariable, nextCommand)))));
}
/// <summary>
/// Assumed {FindSelectionMode} is assigned (use DetermineFindSelectionMode())
/// find selected items and assign to {SelectedList} and {SelectedIdList}
/// </summary>
/// <param name="nextCommand"></param>
/// <returns></returns>
public static IScriptCommand FindSelectedItems(IScriptCommand nextCommand = null)
{
return
(HubScriptCommands.DetermineFindSelectionMode("{FindSelectionMode}",
ScriptCommands.Switch("{FindSelectionMode}",
new Dictionary <FindSelectionMode, IScriptCommand>()
{
{ FindSelectionMode.IChildInfo,
HubScriptCommands.FindSelectedItemsUsingIChildInfo() },
{ FindSelectionMode.GridView,
HubScriptCommands.FindSelectedItemsUsingGridView() }
},
HubScriptCommands.FindSelectedItemsUsingHitTest(),
nextCommand)));
}
public static IScriptCommand StartShellDrag(string iShellDragVariable = "{DragDrop.SupportDrag}", IScriptCommand nextCommand = null)
{
return
//If CanDrag (ItemUnderMouse is selected), Check and set IsDraggingProperty to true.
(ScriptCommands.SetPropertyValue(iShellDragVariable, (ISupportDrag d) => d.IsDraggingFrom, true,
HubScriptCommands.AssignDragMethod(QueryDrag.DragMethodKey,
//Initialize shell based drag drop
HubScriptCommands.QueryDrag(iShellDragVariable, "{DragResult}",
//Reset IsDragging property.
ScriptCommands.SetPropertyValue(iShellDragVariable, (ISupportDrag d) => d.IsDraggingFrom, false,
//Reset IShellDrag variable.
ScriptCommands.Assign(iShellDragVariable, null, false,
nextCommand))))));
}
/// <summary>
/// Assign destination to DragMethod.Menu if Mouse action is right click, otherwise DragMethod.Normal.
/// </summary>
/// <returns></returns>
public static IScriptCommand AssignDragMethod(string variable, IScriptCommand nextCommand = null)
{
return
(ScriptCommands.RunSequence(nextCommand,
HubScriptCommands.IfMouseGesture(new MouseGesture()
{
MouseAction = MouseAction.RightClick
},
ScriptCommands.Assign(variable, DragMethod.Menu),
HubScriptCommands.IfTouchGesture(new TouchGesture()
{
TouchAction = UITouchGesture.Drag
},
ScriptCommands.Assign(variable, DragMethod.Menu),
ScriptCommands.Assign(variable, DragMethod.Normal))
)));
}
/// <summary>
/// Obtain DataObject, Draggables and DropEffects, by calling AssignDataObject, QuerryDraggablesFromDataObject
/// and QueryDropEffects() script commands.
/// </summary>
/// <param name="iSupportDropVariable"></param>
/// <param name="destinationDataObjectVariable"></param>
/// <param name="destinationVariable"></param>
/// <param name="skipIfExists"></param>
/// <param name="nextCommand"></param>
/// <returns></returns>
public static IScriptCommand QueryShellDragInfo(
string iSupportDropVariable = "{ISupportDrop}", string destinationDataObjectVariable = "{DataObj}",
string destinationVariable = "{Draggables}", string queryDropResultVariable = "{QueryDropResult}",
bool skipIfExists = false, IScriptCommand successCommand = null, IScriptCommand otherwiseCommand = null)
{
return(HubScriptCommands.AssignDataObject(destinationDataObjectVariable, false,
HubScriptCommands.QueryDraggablesFromDataObject(iSupportDropVariable, destinationDataObjectVariable, destinationVariable, false,
//And if there's draggables,
ScriptCommands.IfAssigned("{DragDrop.Draggables}",
ScriptCommands.IfNotEquals("{DragDrop.Draggables.Count()}", 0,
//Call ISupportDrop.QueryDropEffects() to get QueryDropEffect.
HubScriptCommands.QueryDropEffects(iSupportDropVariable, destinationVariable, destinationDataObjectVariable, null,
queryDropResultVariable, false,
ScriptCommands.IfEquals(queryDropResultVariable, FileExplorer.Defines.QueryDropEffects.None,
otherwiseCommand,
successCommand)), otherwiseCommand), otherwiseCommand))));
}
public static IScriptCommand UpdateAdorner(string adornerVariable = "{DragDrop.Adorner}",
string iSupportDropVariable = "{ISupportDrop}",
string dragMethodVariable = "{DragDrop.DragMethod}",
string draggablesVariable = "{DragDrop.Draggables}",
IScriptCommand nextCommand = null)
{
string queryDropResultVariable = "{DragDrop.QueryDropResult}";
return(DragDropScriptCommands.UpdateAdornerPointerPosition(adornerVariable,
DragDropScriptCommands.UpdateAdornerDraggables(adornerVariable, draggablesVariable,
HubScriptCommands.QueryDropEffects(iSupportDropVariable, draggablesVariable, null, null, queryDropResultVariable, false,
DragDropScriptCommands.UpdateAdornerText(adornerVariable, dragMethodVariable, draggablesVariable,
queryDropResultVariable, iSupportDropVariable, nextCommand)))));
}
protected override IScriptCommand executeInner(ParameterDic pm, Control sender,
RoutedEventArgs evnt, IUIInput input, IList <IUIInputProcessor> inpProcs)
{
if (!pm.HasValue <ParameterDic>("{DragDrop}"))
{
ScriptCommands.AssignGlobalParameterDic("{DragDrop}", false).Execute(pm);
}
if (!pm.HasValue <Point>(CurrentPositionAdjustedKey))
{
HubScriptCommands.ObtainPointerPosition().Execute(pm);
}
logger.Debug(State.ToString());
switch (State)
{
case DragDropLiteState.StartLite:
case DragDropLiteState.StartCanvas:
string mode = State == DragDropLiteState.StartLite ? "Lite" : "Canvas";
if (dragStart(pm, input, mode))
{
foreach (var item in
pm.GetValue <IEnumerable <IDraggable> >(DragDropDraggingItemsKey)
.Where(i => (State == DragDropLiteState.StartLite) || i is IPositionAware))
{
item.IsDragging = true;
}
return(NextCommand);
}
else
{
return(FailCommand);
}
case DragDropLiteState.EndLite:
case DragDropLiteState.EndCanvas:
case DragDropLiteState.CancelCanvas:
//foreach (var item in pm.GetValue<IEnumerable<IDraggable>>(DragDropDraggingItemsKey))
// item.IsDragging = true;
if (pm.HasValue <Point>(DragDropStartPositionKey))
{
Point currentPosition = pm.GetValue <Point>(CurrentPositionAdjustedKey);
Point startPosition = pm.GetValue <Point>(DragDropStartPositionKey);
Vector movePt = currentPosition - startPosition;
var items = pm.GetValue <IEnumerable <IDraggable> >(DragDropDraggingItemsKey);
foreach (var item in items)
{
item.IsDragging = false;
}
if (State == DragDropLiteState.EndCanvas)
{
foreach (var posAwareItem in items.Cast <IPositionAware>())
{
posAwareItem.OffsetPosition(movePt);
}
}
}
dragEnd(pm);
return(NextCommand);
default: return(ResultCommand.Error(new NotSupportedException(State.ToString())));
}
}
public static IScriptCommand DetachAdorner(string adornerLayerVariable = "{DragDrop.AdornerLayer}",
string adornerVariable = "{DragDrop.Adorner}", IScriptCommand nextCommand = null)
{
return(HubScriptCommands.DetachAdorner(adornerLayerVariable, adornerVariable,
ScriptCommands.Reset(nextCommand, adornerVariable, adornerLayerVariable)));
}
