/// <summary>
/// Occurs when a drag-and-drop operation is completed.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DragDropHandler(object sender, DragEventArgs e)
{
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropTargetBackColor;
lastDragDropTarget = null;
}
var sourceNode = GetDragDropSourceNode(e);
if (sourceNode == null)
{
MessageBox.Show(this, @"Drag & Drop Canceled: Unknown Source");
return;
}
var targetNode = GetDragDropTargetNode(e);
switch (e.Effect)
{
case DragDropEffects.Copy:
DoDragDropCopy((dynamic)sourceNode, (dynamic)targetNode);
break;
case DragDropEffects.Move:
DoDragDropMove((dynamic)sourceNode, (dynamic)targetNode);
break;
}
}
private void AddWizardItem_Click(Object sender, EventArgs e)
{
var newItem = new ItemDefinition();
newItem.ShowDialog(this);
var itemType = newItem.Type;
if (string.IsNullOrEmpty(itemType))
{
return;
}
var itemDescription = newItem.Description;
JTokenNode = (JTokenTreeNode)InsertJToken(JObject.Parse("{}"), true);
var subitems = InsertProperty("subitems", new JArray());
if (!string.IsNullOrEmpty(itemDescription))
{
InsertProperty("desc", itemDescription);
}
InsertProperty("type", itemType);
subitems.Expand();
JTokenNode.TreeView.SelectedNode = subitems.FirstNode;
JTokenNode = (JTokenTreeNode)subitems.FirstNode;
JTokenNode.NodeFont = new Font(SystemFonts.DefaultFont, FontStyle.Bold | FontStyle.Underline);
}
private bool IsDragDropValid(JTokenTreeNode sourceNode, JTokenTreeNode targetNode, DragDropEffects effect)
{
if (sourceNode == null || targetNode == null)
{
return(false);
}
if (sourceNode.JTokenTag is JProperty)
{
return(targetNode.JTokenTag is JObject);
}
if (sourceNode.JTokenTag is JObject)
{
switch (effect)
{
case DragDropEffects.Copy:
return(targetNode.JTokenTag is JArray);
case DragDropEffects.Move:
return(!(targetNode.JTokenTag.Parent is JProperty) &&
targetNode.JTokenTag is JArray);
}
}
if (sourceNode.JTokenTag is JArray)
{
switch (effect)
{
case DragDropEffects.Copy:
return(targetNode.JTokenTag is JArray);
case DragDropEffects.Move:
return(!(targetNode.JTokenTag.Parent is JProperty) &&
targetNode.JTokenTag is JArray);
}
}
if (sourceNode.JTokenTag is JValue)
{
switch (effect)
{
case DragDropEffects.Copy:
return(targetNode.JTokenTag is JArray);
case DragDropEffects.Move:
return(!(targetNode.JTokenTag.Parent is JProperty) &&
targetNode.JTokenTag is JArray);
}
}
return(false);
}
// ReSharper disable once UnusedParameter.Local
private void JsonTreeView_AfterSelectImplementation(JTokenTreeNode node, TreeViewEventArgs e)
{
newtonsoftJsonTypeTextBox.Text = node.Tag.GetType().Name;
jsonTypeComboBox.Text = node.JTokenTag.Type.ToString();
// If jsonValueTextBox is focused then it triggers this event in the update process, so don't update it again ! (risk: infinite loop between events).
if (!jsonValueTextBox.Focused)
{
jsonValueTextBox.Text = node.JTokenTag.ToString();
}
}
private bool IsDragDropValid(JTokenTreeNode sourceNode, JTokenTreeNode targetNode)
{
if (sourceNode == null || targetNode == null)
{
return(false);
}
if (sourceNode.JTokenTag is JProperty)
{
return(targetNode.JTokenTag is JObject);
}
if (sourceNode.JTokenTag is JObject)
{
return(targetNode.JTokenTag is JProperty || targetNode.JTokenTag is JArray);
}
if (sourceNode.JTokenTag is JArray)
{
return(targetNode.JTokenTag is JArray);
}
return(false);
}
/// <inheritdoc />
protected override void OnVisibleChanged(EventArgs e)
{
if (Visible)
{
JTokenNode = FindSourceTreeNode <JTokenTreeNode>();
// Collapse item shown if node is expanded and has children
CollapseAllToolStripItem.Visible = JTokenNode.IsExpanded &&
JTokenNode.Nodes.Cast <TreeNode>().Any();
// Expand item shown if node if not expanded or has a children not expanded
ExpandAllToolStripItem.Visible = !JTokenNode.IsExpanded ||
JTokenNode.Nodes.Cast <TreeNode>().Any(t => !t.IsExpanded);
// Remove item enabled if it is not the root or the value of a property
DeleteNodeToolStripItem.Enabled = (JTokenNode.Parent != null) &&
!(JTokenNode.Parent is JPropertyTreeNode);
// Cut item enabled if delete is
CutNodeToolStripItem.Enabled = DeleteNodeToolStripItem.Enabled;
// Paste items enabled only when a copy or cut operation is pending
PasteNodeAfterToolStripItem.Enabled = !EditorClipboard <JTokenTreeNode> .IsEmpty() &&
(JTokenNode.Parent != null) &&
!(JTokenNode.Parent is JPropertyTreeNode);
PasteNodeBeforeToolStripItem.Enabled = !EditorClipboard <JTokenTreeNode> .IsEmpty() &&
(JTokenNode.Parent != null) &&
!(JTokenNode.Parent is JPropertyTreeNode);
PasteNodeReplaceToolStripItem.Enabled = !EditorClipboard <JTokenTreeNode> .IsEmpty() &&
(JTokenNode.Parent != null);
}
base.OnVisibleChanged(e);
}
private void AddWizardStep_Click(Object sender, EventArgs e)
{
var newStep = new StepDefinition();
newStep.ShowDialog(this);
var stepName = newStep.Title;
if (string.IsNullOrEmpty(stepName))
{
return;
}
var stepValidation = newStep.Validation;
var stepActivation = newStep.Activation;
var stepDeactivation = newStep.Deactivation;
JTokenNode = (JTokenTreeNode)InsertJToken(JObject.Parse("{}"), true);
var items = InsertProperty("items", new JArray());
if (!string.IsNullOrEmpty(stepActivation))
{
InsertProperty("activate", stepActivation); ////Should I do the same Typo 'activeate' as in official Synology documentation??
}
if (!string.IsNullOrEmpty(stepDeactivation))
{
InsertProperty("deactivate", stepDeactivation); //"{console.log('deactivate', arguments);}"
}
InsertProperty("invalid_next_disabled", stepValidation.ToString());
InsertProperty("step_title", stepName);
items.Expand();
JTokenNode.TreeView.SelectedNode = items.FirstNode;
JTokenNode = (JTokenTreeNode)items.FirstNode;
JTokenNode.NodeFont = new Font(SystemFonts.DefaultFont, FontStyle.Bold | FontStyle.Underline);
}
/// <summary>
/// Occurs when an object is dragged over the control's bounds.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DragOverHandler(object sender, DragEventArgs e)
{
var targetNode = GetDragDropTargetNode(e);
var keyState = (KeyStates)e.KeyState;
if ((keyState & KeyStates.Control) == KeyStates.Control)
{
e.Effect = DragDropEffects.Copy;
}
else if ((keyState & KeyStates.Shift) == KeyStates.Shift)
{
e.Effect = DragDropEffects.Move;
}
else
{
e.Effect = DragDropEffects.Copy;
}
if (targetNode == null)
{
if (e.Effect != DragDropEffects.None)
{
lastValidDragDropEffect = e.Effect;
e.Effect = DragDropEffects.None;
}
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropBackColor;
}
lastDragDropTarget = null;
return;
}
if (targetNode == lastDragDropTarget)
{
if (DateTime.Now - lastDragDropDateTime >= new TimeSpan(5000000))
{
targetNode.Expand();
}
return;
}
var sourceNode = GetDragDropSourceNode(e);
if (IsDragDropValid(sourceNode, targetNode))
{
if (e.Effect == DragDropEffects.None)
{
e.Effect = lastValidDragDropEffect;
}
lastDragDropBackColor = targetNode.BackColor;
targetNode.BackColor = Color.BlueViolet;
}
else
{
if (e.Effect != DragDropEffects.None)
{
lastValidDragDropEffect = e.Effect;
e.Effect = DragDropEffects.None;
}
}
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropBackColor;
}
lastDragDropTarget = targetNode;
lastDragDropDateTime = DateTime.Now;
}
/// <summary>
/// Catches all unmanaged copies.
/// </summary>
/// <param name="sourceNode"></param>
/// <param name="targetNode"></param>
private void DoDragDropCopy(JTokenTreeNode sourceNode, JTokenTreeNode targetNode)
{
MessageBox.Show(@"Drag & Drop: Unmanaged Copy");
}
private bool IsDragDropValid(JTokenTreeNode sourceNode, JTokenTreeNode targetNode, DragDropEffects effect)
{
if (sourceNode == null || targetNode == null)
{
return false;
}
if (sourceNode.JTokenTag is JProperty)
{
return targetNode.JTokenTag is JObject;
}
if (sourceNode.JTokenTag is JObject)
{
switch (effect)
{
case DragDropEffects.Copy:
return targetNode.JTokenTag is JArray;
case DragDropEffects.Move:
return !(targetNode.JTokenTag.Parent is JProperty)
&& targetNode.JTokenTag is JArray;
}
}
if (sourceNode.JTokenTag is JArray)
{
switch (effect)
{
case DragDropEffects.Copy:
return targetNode.JTokenTag is JArray;
case DragDropEffects.Move:
return !(targetNode.JTokenTag.Parent is JProperty)
&& targetNode.JTokenTag is JArray;
}
}
if (sourceNode.JTokenTag is JValue)
{
switch (effect)
{
case DragDropEffects.Copy:
return targetNode.JTokenTag is JArray;
case DragDropEffects.Move:
return !(targetNode.JTokenTag.Parent is JProperty)
&& targetNode.JTokenTag is JArray;
}
}
return false;
}
/// <summary>
/// Occurs when an object is dragged over the control's bounds.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DragOverHandler(object sender, DragEventArgs e)
{
var targetNode = GetDragDropTargetNode(e);
if (targetNode == null)
{
e.Effect = DragDropEffects.None;
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropTargetBackColor;
}
lastDragDropTarget = null;
return;
}
var keyState = (KeyStates)e.KeyState;
if (keyState.HasFlag(KeyStates.Control | KeyStates.Shift))
{
e.Effect = DragDropEffects.None;
}
else if (keyState.HasFlag(KeyStates.Control))
{
e.Effect = DragDropEffects.Copy;
}
else if (keyState.HasFlag(KeyStates.Shift))
{
e.Effect = DragDropEffects.Move;
}
else
{
e.Effect = DragDropEffects.Move;
}
var sourceNode = GetDragDropSourceNode(e);
if (targetNode == lastDragDropTarget)
{
if (!targetNode.IsExpanded && DateTime.Now - lastDragOverDateTime >= dragDropExpandDelay)
{
targetNode.Expand();
}
if (IsDragDropValid(sourceNode, targetNode, e.Effect))
{
lastDragDropTargetBackColor = targetNode.BackColor;
targetNode.BackColor = Color.BlueViolet;
}
else
{
targetNode.BackColor = lastDragDropTargetBackColor;
e.Effect = DragDropEffects.None;
}
}
else
{
lastDragDropTarget = targetNode;
lastDragOverDateTime = DateTime.Now;
if (IsDragDropValid(sourceNode, targetNode, e.Effect))
{
lastDragDropTargetBackColor = targetNode.BackColor;
targetNode.BackColor = Color.BlueViolet;
}
else
{
targetNode.BackColor = lastDragDropTargetBackColor;
e.Effect = DragDropEffects.None;
}
}
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropTargetBackColor;
}
}
/// <summary>
/// Occurs when a drag-and-drop operation is completed.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DragDropHandler(object sender, DragEventArgs e)
{
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropTargetBackColor;
lastDragDropTarget = null;
}
var sourceNode = GetDragDropSourceNode(e);
if (sourceNode == null)
{
MessageBox.Show(@"Drag & Drop Canceled: Unknown Source");
return;
}
var targetNode = GetDragDropTargetNode(e);
switch (e.Effect)
{
case DragDropEffects.Copy:
DoDragDropCopy((dynamic)sourceNode, (dynamic)targetNode);
break;
case DragDropEffects.Move:
DoDragDropMove((dynamic)sourceNode, (dynamic)targetNode);
break;
}
}
private void DoDragDropMove(JTokenTreeNode sourceNode, JTokenTreeNode targetNode)
{
// TODO: Move sourceNode to target
MessageBox.Show(@"Drag & Drop: Unmanaged Move");
}
/// <inheritdoc />
protected override void OnVisibleChanged(EventArgs e)
{
var type = "";
if (Visible)
{
JTokenNode = FindSourceTreeNode <JTokenTreeNode>();
// Collapse item shown if node is expanded and has children
CollapseAllToolStripItem.Visible = JTokenNode.IsExpanded &&
JTokenNode.Nodes.Cast <TreeNode>().Any();
// Expand item shown if node if not expanded or has a children not expanded
ExpandAllToolStripItem.Visible = !JTokenNode.IsExpanded ||
JTokenNode.Nodes.Cast <TreeNode>().Any(t => !t.IsExpanded);
// Remove item enabled if it is not the root or the value of a property
DeleteNodeToolStripItem.Enabled = (JTokenNode.Parent != null) &&
!(JTokenNode.Parent is JPropertyTreeNode);
// Cut item enabled if delete is
CutNodeToolStripItem.Enabled = DeleteNodeToolStripItem.Enabled;
// Paste items enabled only when a copy or cut operation is pending
PasteNodeAfterToolStripItem.Enabled = !EditorClipboard <JTokenTreeNode> .IsEmpty() &&
(JTokenNode.Parent != null) &&
!(JTokenNode.Parent is JPropertyTreeNode);
PasteNodeBeforeToolStripItem.Enabled = !EditorClipboard <JTokenTreeNode> .IsEmpty() &&
(JTokenNode.Parent != null) &&
!(JTokenNode.Parent is JPropertyTreeNode);
PasteNodeReplaceToolStripItem.Enabled = !EditorClipboard <JTokenTreeNode> .IsEmpty() &&
(JTokenNode.Parent != null);
AddWizardStepToolStripItem.Visible = (JTokenNode.Level == 0 && JTokenNode.Text.StartsWith("[Array]"));
AddWizardItemToolStripItem.Visible = (JTokenNode.Level == 3 && JTokenNode.Text.StartsWith("[Array]"));
AddWizardSubitemToolStripItem.Visible = (JTokenNode.Level == 6 && JTokenNode.Text.StartsWith("[Array]"));
if (AddWizardSubitemToolStripItem.Visible)
{
try
{
type = JTokenNode.Parent.Parent.FirstNode.FirstNode.Text;
}
catch
{
MessageBox.Show(this, "Type of Item cannot be found. Did you modify the json? Possibly recreate this item!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
type = Helper.GetSubItemType(type);
if (type != "")
{
AddWizardSubitemToolStripItem.Text = "Add a " + type;
}
}
RemoveWizardStepToolStripItem.Visible = (JTokenNode.Level == 1 && JTokenNode.Text.StartsWith("{Object}"));
if (RemoveWizardStepToolStripItem.Visible)
{
try
{
RemoveWizardStepToolStripItem.Text = string.Format("Remove '{0}'", JTokenNode.FirstNode.FirstNode.Text);
}
catch
{
MessageBox.Show(this, "Type of Item cannot be found. Did you modify the json? Possibly recreate this item!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
RemoveWizardItemToolStripItem.Visible = (JTokenNode.Level == 4 && JTokenNode.Text.StartsWith("{Object}"));
if (RemoveWizardItemToolStripItem.Visible)
{
try
{
RemoveWizardItemToolStripItem.Text = string.Format("Remove '{0}'", JTokenNode.Nodes[1].FirstNode.Text);
}
catch
{
MessageBox.Show(this, "Type of Item cannot be found. Did you modify the json? Possibly recreate this item!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
RemoveWizardSubitemToolStripItem.Visible = (JTokenNode.Level == 7 && JTokenNode.Text.StartsWith("{Object}"));
if (RemoveWizardSubitemToolStripItem.Visible)
{
try
{
RemoveWizardSubitemToolStripItem.Text = string.Format("Remove '{0}'", JTokenNode.Nodes[1].FirstNode.Text);
}
catch
{
MessageBox.Show(this, "Type of Item cannot be found. Did you modify the json? Possibly recreate this item!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
base.OnVisibleChanged(e);
}
private void AddWizardSubitem_Click(Object sender, EventArgs e)
{
var node = JTokenNode;
var type = "";
try
{
type = node.Parent.Parent.FirstNode.FirstNode.Text;
}
catch
{
MessageBox.Show(this, "Type of Item cannot be found. Did you modify the json? Possibly recreate this item!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (!string.IsNullOrEmpty(type))
{
var newSubitem = new SubitemDefinition(type);
newSubitem.ShowDialog(this);
var subitemKey = newSubitem.Key;
if (string.IsNullOrEmpty(subitemKey))
{
return;
}
var subitemDescription = newSubitem.Description;
var subitemDefaultValue = newSubitem.DefaultValue;
var subitemEmptyValue = newSubitem.EmptyValue;
var subitemInvalidValue = newSubitem.InvalidValue;
var subitemWidth = newSubitem.Width;
var subitemHeight = newSubitem.Height;
var subitemDisabled = newSubitem.Disable;
var subitemHidden = newSubitem.Hidden;
var subitemPreventMark = newSubitem.PreventMark;
var subitemBaseParams = newSubitem.BaseParams;
var subitemRoot = newSubitem.Root;
var subitemApi = newSubitem.Api;
var subitemValueField = newSubitem.ValueField;
var subitemDisplayField = newSubitem.DisplayField;
var subitemStaticCombo = newSubitem.StaticCombo;
var subitemValueFieldUnique = newSubitem.ValueFieldIsUnique;
var subitemDisplayFieldUnique = newSubitem.DisplayFieldIsUnique;
JTokenNode = (JTokenTreeNode)InsertJToken(JObject.Parse("{}"), true);
if (subitemBaseParams.Count > 0)
{
if (subitemStaticCombo)
{
// Static Combo is filled
var comboNode = JTokenNode;
JTokenNode = (JTokenTreeNode)InsertProperty("store", new JObject()).FirstNode;
InsertProperty("xtype", "arraystore");
var storeNode = JTokenNode;
JTokenNode = (JTokenTreeNode)InsertProperty("fields", new JArray()).FirstNode;
if (!string.IsNullOrEmpty(subitemValueField))
{
InsertJToken(new JValue(subitemValueField));
}
if (!string.IsNullOrEmpty(subitemDisplayField))
{
InsertJToken(new JValue(subitemDisplayField));
}
JTokenNode = storeNode;
JTokenNode = (JTokenTreeNode)InsertProperty("data", new JArray()).FirstNode;
foreach (var item in subitemBaseParams)
{
InsertJToken(new JArray(new JValue(item.value), new JValue(item.name)));
}
JTokenNode = comboNode;
InsertProperty("mode", "local");
if (string.IsNullOrEmpty(subitemDefaultValue))
{
subitemDefaultValue = "false";
}
InsertProperty("editable", Convert.ToBoolean(subitemDefaultValue)); //TODO: fix this. Should use "Editable"
if (!string.IsNullOrEmpty(subitemValueField))
{
InsertProperty("valuefield", subitemValueField);
}
if (!string.IsNullOrEmpty(subitemDisplayField))
{
InsertProperty("displayfield", subitemDisplayField);
}
}
else
{
// Dynamic Combo is filled
var comboNode = JTokenNode;
JTokenNode = (JTokenTreeNode)InsertProperty("api_store", new JObject()).FirstNode;
InsertProperty("api", subitemApi);
InsertProperty("method", "list");
InsertProperty("version", 1);
InsertProperty("root", subitemRoot);
if (subitemValueFieldUnique)
{
InsertProperty("idProperty", subitemValueField);
}
else if (subitemDisplayFieldUnique)
{
InsertProperty("idProperty", subitemDisplayField);
}
var storeNode = JTokenNode;
JTokenNode = (JTokenTreeNode)InsertProperty("fields", new JArray()).FirstNode;
if (!string.IsNullOrEmpty(subitemValueField))
{
InsertJToken(new JValue(subitemValueField));
}
if (!string.IsNullOrEmpty(subitemDisplayField))
{
InsertJToken(new JValue(subitemDisplayField));
}
JTokenNode = storeNode;
JTokenNode = (JTokenTreeNode)InsertProperty("baseParams", new JObject()).FirstNode;
foreach (var item in subitemBaseParams)
{
InsertProperty(item.name, item.value);
}
JTokenNode = comboNode;
InsertProperty("mode", "remote");
if (string.IsNullOrEmpty(subitemDefaultValue))
{
subitemDefaultValue = "false";
}
InsertProperty("editable", Convert.ToBoolean(subitemDefaultValue)); //TODO: fix this. Should use "Editable"
if (!string.IsNullOrEmpty(subitemValueField))
{
InsertProperty("valuefield", subitemValueField);
}
if (!string.IsNullOrEmpty(subitemDisplayField))
{
InsertProperty("displayfield", subitemDisplayField);
}
}
}
if (subitemDisabled)
{
InsertProperty("disabled", subitemDisabled);
}
if (subitemHidden)
{
InsertProperty("hidden", subitemHidden);
}
if (subitemPreventMark)
{
InsertProperty("preventMark", subitemPreventMark);
}
if (!string.IsNullOrEmpty(subitemWidth))
{
InsertProperty("width", subitemWidth);
}
if (!string.IsNullOrEmpty(subitemHeight))
{
InsertProperty("height", subitemHeight);
}
if (!string.IsNullOrEmpty(subitemDescription))
{
InsertProperty("desc", subitemDescription);
}
if (!string.IsNullOrEmpty(subitemDefaultValue))
{
InsertProperty("defaultValue", subitemDefaultValue);
}
InsertProperty("key", subitemKey);
JTokenNode.TreeView.SelectedNode = node;
JTokenNode = node;
}
}
/// <summary>
/// Occurs when an object is dragged over the control's bounds.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DragOverHandler(object sender, DragEventArgs e)
{
var targetNode = GetDragDropTargetNode(e);
var keyState = (KeyStates)e.KeyState;
if ((keyState & KeyStates.Control) == KeyStates.Control)
{
e.Effect = DragDropEffects.Copy;
}
else if ((keyState & KeyStates.Shift) == KeyStates.Shift)
{
e.Effect = DragDropEffects.Move;
}
else
{
e.Effect = DragDropEffects.Copy;
}
if (targetNode == null)
{
if (e.Effect != DragDropEffects.None)
{
lastValidDragDropEffect = e.Effect;
e.Effect = DragDropEffects.None;
}
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropBackColor;
}
lastDragDropTarget = null;
return;
}
if (targetNode == lastDragDropTarget)
{
if (DateTime.Now - lastDragDropDateTime >= new TimeSpan(5000000))
{
targetNode.Expand();
}
return;
}
var sourceNode = GetDragDropSourceNode(e);
if (IsDragDropValid(sourceNode, targetNode))
{
if (e.Effect == DragDropEffects.None)
{
e.Effect = lastValidDragDropEffect;
}
lastDragDropBackColor = targetNode.BackColor;
targetNode.BackColor = Color.BlueViolet;
}
else
{
if (e.Effect != DragDropEffects.None)
{
lastValidDragDropEffect = e.Effect;
e.Effect = DragDropEffects.None;
}
}
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropBackColor;
}
lastDragDropTarget = targetNode;
lastDragDropDateTime = DateTime.Now;
}
private bool IsDragDropValid(JTokenTreeNode sourceNode, JTokenTreeNode targetNode)
{
if (sourceNode == null || targetNode == null)
{
return false;
}
if (sourceNode.JTokenTag is JProperty)
{
return targetNode.JTokenTag is JObject;
}
if (sourceNode.JTokenTag is JObject)
{
return targetNode.JTokenTag is JProperty || targetNode.JTokenTag is JArray;
}
if (sourceNode.JTokenTag is JArray)
{
return targetNode.JTokenTag is JArray;
}
return false;
}
// ReSharper disable once UnusedParameter.Local
private void JsonTreeView_AfterSelectImplementation(JTokenTreeNode node, TreeViewEventArgs e)
{
newtonsoftJsonTypeTextBox.Text = node.Tag.GetType().Name;
jsonTypeComboBox.Text = node.JTokenTag.Type.ToString();
// If jsonValueTextBox is focused then it triggers this event in the update process, so don't update it again ! (risk: infinite loop between events).
if (!jsonValueTextBox.Focused)
{
jsonValueTextBox.Text = node.JTokenTag.ToString();
}
}
/// <summary>
/// Catches all unmanaged copies.
/// </summary>
/// <param name="sourceNode"></param>
/// <param name="targetNode"></param>
private void DoDragDropCopy(JTokenTreeNode sourceNode, JTokenTreeNode targetNode)
{
MessageBox.Show(this, @"Drag & Drop: Unmanaged Copy");
}
private void DoDragDropMove(JTokenTreeNode sourceNode, JTokenTreeNode targetNode)
{
// TODO: Move sourceNode to target
MessageBox.Show(this, @"Drag & Drop: Unmanaged Move");
}
/// <summary>
/// Occurs when an object is dragged over the control's bounds.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DragOverHandler(object sender, DragEventArgs e)
{
var targetNode = GetDragDropTargetNode(e);
if (targetNode == null)
{
e.Effect = DragDropEffects.None;
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropTargetBackColor;
}
lastDragDropTarget = null;
return;
}
var keyState = (KeyStates)e.KeyState;
if (keyState.HasFlag(KeyStates.Control | KeyStates.Shift))
{
e.Effect = DragDropEffects.None;
}
else if (keyState.HasFlag(KeyStates.Control))
{
e.Effect = DragDropEffects.Copy;
}
else if (keyState.HasFlag(KeyStates.Shift))
{
e.Effect = DragDropEffects.Move;
}
else
{
e.Effect = DragDropEffects.Move;
}
var sourceNode = GetDragDropSourceNode(e);
if (targetNode == lastDragDropTarget)
{
if (!targetNode.IsExpanded && DateTime.Now - lastDragOverDateTime >= dragDropExpandDelay)
{
targetNode.Expand();
}
if (IsDragDropValid(sourceNode, targetNode, e.Effect))
{
lastDragDropTargetBackColor = targetNode.BackColor;
targetNode.BackColor = Color.BlueViolet;
}
else
{
targetNode.BackColor = lastDragDropTargetBackColor;
e.Effect = DragDropEffects.None;
}
}
else
{
lastDragDropTarget = targetNode;
lastDragOverDateTime = DateTime.Now;
if (IsDragDropValid(sourceNode, targetNode, e.Effect))
{
lastDragDropTargetBackColor = targetNode.BackColor;
targetNode.BackColor = Color.BlueViolet;
}
else
{
targetNode.BackColor = lastDragDropTargetBackColor;
e.Effect = DragDropEffects.None;
}
}
if (lastDragDropTarget != null)
{
lastDragDropTarget.BackColor = lastDragDropTargetBackColor;
}
}
