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Fix crash caused by null selected blocks (#92) 

* Fixed a crash caused by null selected blocks
This commit is contained in:
azakhi 2018-10-01 15:29:35 +03:00 committed by Ben Wallis
parent 8073948cfe
commit 4022cf12a0
1 changed files with 6 additions and 1 deletions
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7
Filtration/ViewModels/ItemFilterScriptViewModel.cs
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@ -379,7 +379,7 @@ namespace Filtration.ViewModels
{
for (var i = 0; i < SelectedBlockViewModels.Count; i++)
{
if (!ViewItemFilterBlockViewModels.Contains(SelectedBlockViewModels[i]))
if (SelectedBlockViewModels[i] == null || !ViewItemFilterBlockViewModels.Contains(SelectedBlockViewModels[i]))
{
SelectedBlockViewModels.RemoveAt(i--);
}
@ -554,6 +554,8 @@ namespace Filtration.ViewModels
public bool CanModifySelectedBlocks()
{
ValidateSelectedBlocks();
if (SelectedBlockViewModels.Count < 1)
return false;
@ -570,6 +572,9 @@ namespace Filtration.ViewModels
public bool CanModifyBlock(IItemFilterBlockViewModelBase itemFilterBlock)
{
if (itemFilterBlock == null)
return false;
if (itemFilterBlock is IItemFilterBlockViewModel)
return true;