protected override void OnClick(EventArgs e)
{
MenuWithHandler definition = (Tag as MenuWithHandler);
if (definition.Target != null)
{
definition.Target.OnCommand(definition.ID);
}
// Sometimes all menu texts are blank. I cannot reproduce it. I guess, it is because the menus are not disposed. I debugged by overriding Dispose of ContextMenuWithHandler
// If a menu item is clicked, the menu disappears and can be disposed. This is forced here. But if the menu disappears because of some other reason (ESC, click somewhere else)
// Dispose doesn't get called until maybe much later or when the form closes.
ContextMenuWithHandler toDispose = null;
Menu parent = this.Parent;
while (parent != null)
{
if (parent is ContextMenuWithHandler cmh)
{
toDispose = cmh;
break;
}
if (parent is MenuItem mi)
{
parent = mi.Parent;
}
else
{
break;
}
}
toDispose?.Dispose();
}
void ICanvas.ShowContextMenu(MenuWithHandler[] contextMenu, System.Drawing.Point viewPosition, Action <int> collapsed)
{
ContextMenuWithHandler cm = MenuManager.MakeContextMenu(contextMenu);
ContextMenu = cm; // need to set this in order to get the Collapse event
callbackCollapsed = collapsed;
cm.Collapse += Cm_Collapse;
cm.UpdateCommand();
cm.Show(this, viewPosition);
}
internal void ButtonClicked(object sender, EventArgs e)
{
if (sender is ToolStripSplitButton)
{
ToolStripSplitButton btn = sender as ToolStripSplitButton;
if (!btn.ButtonPressed || lastSubMenuId == "")
{ // clicked on the dropdown button, or first time click in the button
ContextMenuWithHandler cm = MenuManager.MakeContextMenu(MenuResource.LoadMenuDefinition(menuId, false, this));
Control btnParent = parent.GetCurrentParent();
System.Drawing.Point pnt;
if (!btnParent.Visible)
{
pnt = btnParent.PointToScreen(new System.Drawing.Point(btn.Bounds.Left, btn.Bounds.Bottom));
btnParent = Application.OpenForms[0];
pnt = btnParent.PointToClient(pnt);
}
else
{
pnt = new System.Drawing.Point(btn.Bounds.Left, btn.Bounds.Bottom);
}
cm.Show(btnParent, pnt);
// if a menu item will be selected, the tagInfo.lastSubMenuId will be set to the selected menu item
// and next time, tagInfo.lastSubMenuId will be executed imediately
}
else
{ // tagInfo.lastSubMenuId contains the menu id of the last selected menu item. This will be executed
bool ok = commandHandler.OnCommand(lastSubMenuId);
// if not ok, the command has not been handled
}
}
else
{
bool ok = commandHandler.OnCommand(menuId);
// if not ok, the command has not been handled
}
}
static internal ContextMenuWithHandler MakeContextMenu(MenuWithHandler[] definition)
{
ContextMenuWithHandler cm = new ContextMenuWithHandler(definition);
return(cm);
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
(int index, EMousePos position, Rectangle hitItem) = GetMousePosition(e);
if (position == EMousePos.onValue && entries[index].Flags.HasFlag(PropertyEntryType.DropDown))
{
position = EMousePos.onDropDownButton;
}
switch (position)
{
case EMousePos.onTreeButton:
int added = entries[index].OpenOrCloseSubEntries();
if (added != 0)
{
RefreshEntries(-1, 0);
}
(this as IPropertyPage).Selected = entries[index];
break;
case EMousePos.onCheckbox:
entries[index].ButtonClicked(PropertyEntryButton.check);
break;
case EMousePos.onDropDownButton:
{
ShowDropDown(index);
}
break;
case EMousePos.onCancelButton:
entries[index].ButtonClicked(PropertyEntryButton.cancel);
break;
case EMousePos.onOkButton:
entries[index].ButtonClicked(PropertyEntryButton.ok);
break;
case EMousePos.onContextMenu:
if (entries[index].ContextMenu == null)
{
throw new NotImplementedException("implement ContextMenu of " + entries[index].GetType().ToString() + ", " + entries[index].ResourceId);
}
ContextMenuWithHandler cm = MenuManager.MakeContextMenu(entries[index].ContextMenu);
cm.UpdateCommand(); // ContextMenu OnPopup is not being called
cm.Show(this, e.Location);
break;
case EMousePos.onLabel:
if (selected == index && entries[index].Flags.HasFlag(PropertyEntryType.LabelEditable))
{
SelectedIndex = index;
if (propertiesExplorer.EntryWithTextBox == entries[index])
{
propertiesExplorer.HideTextBox(); // there is a textBox open for the value
}
ShowTextBox(index, e.Location, false);
}
else
{
if (entries[index].Flags.HasFlag(PropertyEntryType.Selectable))
{
SelectedIndex = index;
}
}
break;
case EMousePos.onValue:
if (entries[index].Flags.HasFlag(PropertyEntryType.ValueEditable))
{
SelectedIndex = index; // before ShowTextBox, because this calls unselected and thus updates the currently textBox or listBox (if any)
ShowTextBox(index, e.Location, true);
}
else
{
if (entries[index].Flags.HasFlag(PropertyEntryType.Selectable))
{
SelectedIndex = index;
}
if (entries[index].Flags.HasFlag(PropertyEntryType.ValueAsButton))
{
entries[index].ButtonClicked(PropertyEntryButton.value);
}
}
break;
case EMousePos.onMiddleLine:
Cursor = Cursors.VSplit;
break;
default:
Cursor = Cursors.Arrow;
break;
}
}
