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Change Cursor Position before "Changed Event" is triggert. (Issue #2 on Termina.Gui.Elmish) (#187)

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In the elmish wrapper for the Termial.Gui I need the "right" cursor position when the "Changed" event is triggered. In the current Implementation the cursor position is set after the event is triggered, so either I have to wait some ms asynchronously before I can process the event or I change the order inside the ProcessKey Method by using a helper variable "oldCurPos" and set the cursor position before the SetText method is called.

Related to: https://github.com/DieselMeister/Terminal.Gui.Elmish/issues/2
This commit is contained in:
DieselMeister
2019-05-01 13:26:50 +02:00
committed by Miguel de Icaza
parent 29ec7aaddb
commit a41b060a59
1 changed files with 13 additions and 8 deletions
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21
Terminal.Gui/Views/TextField.cs
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@@ -215,6 +215,11 @@ namespace Terminal.Gui {
public override bool ProcessKey (KeyEvent kb)
{
// remember current cursor position
// because the new calculated cursor position is needed to be set BEFORE the change event is triggert
// Needed for the Elmish Wrapper issue https://github.com/DieselMeister/Terminal.Gui.Elmish/issues/2
var oldCursorPos = point;
switch (kb.Key) {
case Key.DeleteChar:
case Key.ControlD:
@@ -230,8 +235,8 @@ namespace Terminal.Gui {
if (point == 0)
return true;
SetText (text.GetRange (0, point - 1).Concat (text.GetRange (point, text.Count - (point))));
point--;
SetText(text.GetRange(0, oldCursorPos - 1).Concat(text.GetRange(oldCursorPos, text.Count - (oldCursorPos))));
Adjust ();
break;
@@ -280,11 +285,11 @@ namespace Terminal.Gui {
return true;
if (point == text.Count) {
SetText (text.Concat (clip).ToList ());
point = text.Count;
SetText(text.Concat(clip).ToList());
} else {
SetText (text.GetRange (0, point).Concat (clip).Concat (text.GetRange (point, text.Count - point)));
point += clip.Count;
SetText(text.GetRange(0, oldCursorPos).Concat(clip).Concat(text.GetRange(oldCursorPos, text.Count - oldCursorPos)));
}
Adjust ();
break;
@@ -315,16 +320,16 @@ namespace Terminal.Gui {
var kbstr = TextModel.ToRunes (ustring.Make ((uint)kb.Key));
if (used) {
point++;
if (point == text.Count) {
SetText (text.Concat (kbstr).ToList ());
} else {
SetText (text.GetRange (0, point).Concat (kbstr).Concat (text.GetRange (point, text.Count - point)));
}
point++;
SetText(text.GetRange(0, oldCursorPos).Concat(kbstr).Concat(text.GetRange(oldCursorPos, text.Count - oldCursorPos)));
}
} else {
SetText (kbstr);
first = 0;
point = 1;
SetText (kbstr);
first = 0;
}
used = true;
Adjust ();