/// <summary>
/// Creates an instance of an ArrowElement
/// </summary>
/// <param name="sourceElement">The element the arrow starts at</param>
/// <param name="destElement">the element the arrow ends at</param>
/// <param name="modelElements">A list of all the elements in the model</param>
public ArrowElement(ModelElement sourceElement, ModelElement destElement, List<ModelElement> modelElements) : base(modelElements)
{
_startElement = sourceElement;
_stopElement = destElement;
updateDimentions();
Shape = ModelShapes.Arrow;
Location = _startElement.Location;
}
/// <summary>
/// Adds an element to the _modelElementsSelected Array and highlights it
/// </summary>
/// <param name="element"></param>
private void AddSelectedElement(ModelElement element)
{
_modelElementsSelected.Insert(0,element);
element.Highlighted(true);
//We check if the element has any arrows connected to it and if it does we select them too
foreach (ModelElement me in _modelElements)
{
if (me as ArrowElement != null)
{
ArrowElement ae = me as ArrowElement;
if (ae.StartElement == element || ae.StopElement == element)
{
_modelElementsSelected.Add(ae);
ae.Highlighted(true);
}
}
}
IsInitialized = false;
}
/// <summary>
/// Removes a specific element from the model clearing any links it has to other elements
/// </summary>
/// <param name="element">The element to remove</param>
private void DeleteElement(ModelElement element)
{
if (element as ToolElement != null)
{
ToolElement te = element as ToolElement;
if (_modelElements.Contains(te))
_modelElements.Remove(te);
}
else if (element as DataElement != null)
{
DataElement de = element as DataElement;
if (_modelElements.Contains(de))
_modelElements.Remove(de);
}
else if (element as ArrowElement != null)
{
ArrowElement ae = element as ArrowElement;
if (_modelElements.Contains(ae))
_modelElements.Remove(ae);
}
else if (element as BlankElement != null)
{
if (_modelElements.Contains(element))
_modelElements.Remove(element);
}
}
/// <summary>
/// Adds a element to the model
/// </summary>
/// <param name="element">The new model Element to add to the model form</param>
/// <param name="location">A point representing the virtual location of the element</param>
private void AddElement(ModelElement element, Point location)
{
List<string> elementNames = new List<string>();
foreach (ModelElement mEle in _modelElements)
elementNames.Add(mEle.Name);
string tempName = element.Name;
int i = 1;
while (elementNames.Contains(tempName))
{
tempName = element.Name + "_" + i;
i++;
}
element.Name = tempName;
_modelElements.Add(element);
element.Location = location;
IsInitialized = false;
}
/// <summary>
/// Removes the specified element from the _selectedElements list
/// </summary>
/// <param name="element"></param>
private void RemoveSelectedElement(ModelElement element)
{
if (_modelElementsSelected.Contains(element))
{
_modelElementsSelected.Remove(element);
element.Highlighted(false);
IsInitialized = false;
}
}
/// <summary>
/// When the user double clicks on the model this event fires
/// </summary>
/// <param name="e"></param>
protected override void OnDoubleClick(EventArgs e)
{
base.OnDoubleClick(e);
MouseEventArgs mouseE = e as MouseEventArgs;
//If the user left clicked on a selected element we do nothing
if (mouseE == null) return;
Point virPt = PixelToVirtual(mouseE.X, mouseE.Y);
foreach (ModelElement me in _modelElementsSelected)
{
//Point pt = new Point(virPt.X - me.Location.X, virPt.Y - me.Location.Y);
if (me.pointInElement(virPt))
{
//We create a new instance if its a toolelement
ToolElement meAsTool = me as ToolElement;
if (meAsTool != null)
{
//All of the parameters are copied from the original one
ITool newToolCopy = _toolManager.NewTool(meAsTool.Tool.UniqueName);
for (int i = 0; i < (meAsTool.Tool.InputParameters.Length); i++)
if (newToolCopy.InputParameters[i] != null) newToolCopy.InputParameters[i] = meAsTool.Tool.InputParameters[i].Copy();
for (int i = 0; i < (meAsTool.Tool.OutputParameters.Length); i++)
if (newToolCopy.OutputParameters[i] != null) newToolCopy.OutputParameters[i] = meAsTool.Tool.OutputParameters[i].Copy();
//This code ensures that no children are passed into the tool
List<ModelElement> tempList = new List<ModelElement>();
foreach (ModelElement mEle in _modelElements)
{
if (mEle.isDownstreamOf(meAsTool)) continue;
tempList.Add(mEle);
}
ToolElement tempTool = new ToolElement(newToolCopy, tempList);
//If the user hits ok we dispose of the saved copy if they don't we restore the old values
if (tempTool.DoubleClick())
{
for (int i = 0; i < (meAsTool.Tool.InputParameters.Length); i++)
if ( meAsTool.Tool.InputParameters[i] != null) meAsTool.Tool.InputParameters[i] = tempTool.Tool.InputParameters[i];
for (int i = 0; i < (meAsTool.Tool.OutputParameters.Length); i++)
{
if (tempTool.Tool.OutputParameters[i] != null)
{
if (tempTool.Tool.OutputParameters[i].DefaultSpecified)
{
meAsTool.Tool.OutputParameters[i].ModelName = tempTool.Tool.OutputParameters[i].ModelName;
meAsTool.Tool.OutputParameters[i].Value = tempTool.Tool.OutputParameters[i].Value;
}
}
}
//First we clear all the arrows linking to the current tool (We use a temporary array since we will be removing items from the list)
ModelElement[] tempArray = new ModelElement[_modelElements.Count];
_modelElements.CopyTo(tempArray);
foreach (ModelElement mele in tempArray)
{
ArrowElement ae = mele as ArrowElement;
if (ae != null)
{
if (ae.StopElement == meAsTool)
DeleteElement(ae);
}
}
//We go through each parameters of the tool to the model if they haven't been added already
int j = 0;
foreach (Parameter par in meAsTool.Tool.InputParameters)
{
if (par == null) continue;
//If its not supposed to be visible we ignore it.
if (par.ParamVisible == ShowParamInModel.No)
continue;
//If no default has been specified continue
if (par.DefaultSpecified == false)
continue;
//If the parameter has not been assigned a model name we add the data to the model
bool addParam = true;
foreach (ModelElement modElem in _modelElements)
{
DataElement dataElem = modElem as DataElement;
if (dataElem == null) continue;
if (dataElem.Parameter.Value == par.Value) { addParam = false; break; }
}
if (addParam)
{
Point newLocation = new Point(meAsTool.Location.X - Convert.ToInt32(meAsTool.Width * 1.1), meAsTool.Location.Y + Convert.ToInt32(j * meAsTool.Height * 1.1));
AddArrow(AddData(par, newLocation), meAsTool);
j++;
}
else
{
//If the parameter has already been added we make sure that we have linked to it properly
tempArray = new ModelElement[_modelElements.Count];
_modelElements.CopyTo(tempArray);
foreach (ModelElement mele in tempArray)
{
DataElement de = mele as DataElement;
if (de != null)
{
if (par.ModelName == de.Parameter.ModelName)
{
AddArrow(mele, meAsTool);
}
}
}
}
}
//This updates the status light
meAsTool.updateStatus();
}
}
else
{
me.DoubleClick();
}
Invalidate();
return;
}
}
}
/// <summary>
/// Adds an arrow element given a source and destination element
/// </summary>
/// <param name="sourceElement"></param>
/// <param name="destElement"></param>
private ArrowElement AddArrow(ModelElement sourceElement, ModelElement destElement)
{
ArrowElement ae = new ArrowElement(sourceElement, destElement, _modelElements);
ae.Color = _arrowColor;
ae.Name = sourceElement.Name + "_" + destElement.Name;
AddElement(ae, ae.Location);
return ae;
}
/// <summary>
/// When the user mouses up after a single click this event fires
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
Point virPt = PixelToVirtual(e.Location);
//If we are in link mode we run this
if (_linkArrow != null)
{
ClearSelectedElements();
ModelElement[] tempElements = new ModelElement[_modelElements.Count];
_modelElements.CopyTo(tempElements);
foreach (ModelElement me in tempElements)
{
if (me.pointInElement(virPt) && me != _linkArrow.StartElement)
{
ToolElement te = me as ToolElement;
if (te != null) //If the user let go over a tool we try to link to to, assuming it doesn't create a loop
{
if (_linkArrow.StartElement.isDownstreamOf(te)) //If the tool is the data sets parent
{
MessageBox.Show(MessageStrings.linkErrorCircle, MessageStrings.linkError, MessageBoxButtons.OK, MessageBoxIcon.Information);
break;
}
bool showError = true;
for (int i = 0; i < te.Tool.InputParameters.Length; i++)
{
DataElement linkStart = _linkArrow.StartElement as DataElement;
if (te.Tool.InputParameters[i].DefaultSpecified == false && te.Tool.InputParameters[i].ParamType == linkStart.Parameter.ParamType)
{
AddArrow(linkStart, te);
te.Tool.InputParameters[i].Value = linkStart.Parameter.Value;
te.Tool.InputParameters[i].ModelName = linkStart.Parameter.ModelName;
showError = false;
te.updateStatus();
break;
}
}
if (showError) MessageBox.Show(MessageStrings.linkNoFreeInput, MessageStrings.linkError, MessageBoxButtons.OK, MessageBoxIcon.Information);
break;
}
MessageBox.Show(MessageStrings.linkErrorToData, MessageStrings.linkError ,MessageBoxButtons.OK,MessageBoxIcon.Information);
break;
}
}
DeleteElement(_linkArrow.StopElement);
DeleteElement(_linkArrow);
_linkArrow = null;
IsInitialized = false;
Invalidate();
Application.DoEvents();
return;
}
//If we detect the user clicked on a element and didn't move the mouse we select that element and clear the others
if (_mouseMoved == false && _mouseDownOnElement)
{
if (ModifierKeys != Keys.Control)
{
ClearSelectedElements();
foreach (ModelElement me in _modelElements)
{
if (_modelElementsSelected.Contains(me))
continue;
if (me.pointInElement(virPt))
{
if (ModifierKeys == Keys.Control)
{
RemoveSelectedElement(me);
_mouseDownOnElement = false;
}
AddSelectedElement(me);
_mouseDownOnElement = false;
return;
}
}
}
}
//When the user lets go of the select box we find out which elements it selected
if (_selectBoxDraw && _mouseMoved)
{
ClearSelectedElements();
List <ModelElement> elementBox = new List<ModelElement>();
foreach (ModelElement me in _modelElements)
{
if (_modelElementsSelected.Contains(me))
continue;
if (me.elementInRectangle(PixelRectToVirtualRect(_selectBox)))
{
elementBox.Add(me);
}
}
for (int i = elementBox.Count - 1;i >= 0; i-- )
{
AddSelectedElement(elementBox[i]);
}
}
//After a mouse up we reset the mouse variables
_selectBoxDraw = false;
Invalidate(_selectBox);
_mouseDownOnElement = false;
_mouseMoved = false;
}
private List<ModelElement> getChildren(ModelElement parent)
{
List<ModelElement> listChildren = new List<ModelElement>();
foreach (ModelElement mEl in _modelElements)
{
ArrowElement mAr = mEl as ArrowElement;
if (mAr != null)
if (mAr.StartElement != null)
if (mAr.StartElement == parent) listChildren.Add(mAr.StopElement);
}
return listChildren;
}
private bool isUpstreamOf(ModelElement potentialDownstream, ModelElement parent)
{
foreach (ModelElement mEl in _modelElements)
{
ArrowElement mAr = mEl as ArrowElement;
if (mAr != null)
{
if (mAr.StartElement == null) continue;
if (mAr.StartElement == parent)
{
if (mAr.StopElement == null) continue;
if (mAr.StopElement == potentialDownstream) return true;
else
{
foreach (ModelElement children in getChildren(mAr.StartElement))
{
if (isUpstreamOf(potentialDownstream, children)) return true;
}
}
return false;
}
}
}
return false;
}
/// <summary>
/// Returns true if this model element is downstream of the potentialUpstream element
/// </summary>
/// <param name="potentialDownstream"></param>
/// <returns></returns>
public bool isUpstreamOf(ModelElement potentialDownstream)
{ return isUpstreamOf(potentialDownstream, this); }
private List<ModelElement> getParents(ModelElement child)
{
List<ModelElement> listParents = new List<ModelElement>();
foreach (ModelElement mEl in _modelElements)
{
ArrowElement mAr = mEl as ArrowElement;
if (mAr != null)
if (mAr.StopElement != null)
if (mAr.StopElement == child) listParents.Add(mAr.StartElement);
}
return listParents;
}
