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extract methods on ListView to make it controlable from other controls (#310)

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* moveup

* MoveDown

* MovePageDown

* MovePageUp

* MarkUnmarkRow
This commit is contained in:
Kasper B. Graversen
2020-02-29 17:51:49 +01:00
committed by GitHub
parent 8a502e5f1b
commit 787d65b161
1 changed files with 76 additions and 48 deletions
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124
Terminal.Gui/Views/ListView.cs
View File

@@ -283,69 +283,97 @@ namespace Terminal.Gui {
switch (kb.Key) {
case Key.CursorUp:
case Key.ControlP:
if (selected > 0) {
selected--;
if (selected < top)
top = selected;
if (SelectedChanged != null)
SelectedChanged ();
SetNeedsDisplay ();
}
return true;
return MoveUp();
case Key.CursorDown:
case Key.ControlN:
if (selected + 1 < source.Count) {
selected++;
if (selected >= top + Frame.Height)
top++;
if (SelectedChanged != null)
SelectedChanged ();
SetNeedsDisplay ();
}
return true;
return MoveDown();
case Key.ControlV:
case Key.PageDown:
var n = (selected + Frame.Height);
if (n > source.Count)
n = source.Count - 1;
if (n != selected) {
selected = n;
if (source.Count >= Frame.Height)
top = selected;
else
top = 0;
if (SelectedChanged != null)
SelectedChanged ();
SetNeedsDisplay ();
}
return true;
return MovePageDown();
case Key.PageUp:
n = (selected - Frame.Height);
if (n < 0)
n = 0;
if (n != selected) {
selected = n;
top = selected;
if (SelectedChanged != null)
SelectedChanged ();
SetNeedsDisplay ();
}
return true;
return MovePageUp();
case Key.Space:
if (allowsMarking) {
Source.SetMark (SelectedItem, !Source.IsMarked (SelectedItem));
SetNeedsDisplay ();
if (MarkUnmarkRow())
return true;
}
break;
else
break;
}
return base.ProcessKey (kb);
}
public virtual bool MarkUnmarkRow(){
if (allowsMarking){
Source.SetMark(SelectedItem, !Source.IsMarked(SelectedItem));
SetNeedsDisplay();
return true;
}
return false;
}
public virtual bool MovePageUp(){
int n = (selected - Frame.Height);
if (n < 0)
n = 0;
if (n != selected){
selected = n;
top = selected;
if (SelectedChanged != null)
SelectedChanged();
SetNeedsDisplay();
}
return true;
}
public virtual bool MovePageDown(){
var n = (selected + Frame.Height);
if (n > source.Count)
n = source.Count - 1;
if (n != selected){
selected = n;
if (source.Count >= Frame.Height)
top = selected;
else
top = 0;
if (SelectedChanged != null)
SelectedChanged();
SetNeedsDisplay();
}
return true;
}
public virtual bool MoveDown(){
if (selected + 1 < source.Count){
selected++;
if (selected >= top + Frame.Height)
top++;
if (SelectedChanged != null)
SelectedChanged();
SetNeedsDisplay();
}
return true;
}
public virtual bool MoveUp(){
if (selected > 0){
selected--;
if (selected < top)
top = selected;
if (SelectedChanged != null)
SelectedChanged();
SetNeedsDisplay();
}
return true;
}
/// <summary>
/// Positions the cursor in this view
/// </summary>