Scopes select-all to visible filtered list items

Enhances grid view selection to optionally target only visible items when a filter is applied, preventing accidental selection or deselection of hidden rows via the header checkbox. Updates the save logic to process the unfiltered master dataset, ensuring that previously selected but currently hidden items are safely preserved during save operations.
2026-06-14 02:09:35 -06:00 · 2026-03-03 15:16:01 -08:00
parent 04dfb5f327
commit f09c98906a
3 changed files with 70 additions and 19 deletions
@@ -329,7 +329,8 @@ function Add-SelectableGridViewColumn {
        [string]$HeaderCheckBoxKeyName,
        [Parameter(Mandatory)]
        [double]$ColumnWidth,
-        [string]$IsSelectedPropertyName = "IsSelected"
+        [string]$IsSelectedPropertyName = "IsSelected",
+        [switch]$HeaderSelectionAffectsVisibleItemsOnly
    )

    # Ensure the ListView has a GridView
@@ -343,10 +344,11 @@ function Add-SelectableGridViewColumn {
    $headerCheckBox = New-Object System.Windows.Controls.CheckBox
    $headerCheckBox.HorizontalAlignment = [System.Windows.HorizontalAlignment]::Center
    
-    # MODIFICATION: Store the actual ListView object in the header's Tag
+    # Store header metadata, including whether select-all should only affect visible rows.
    $headerTagObject = [PSCustomObject]@{
-        PropertyName    = $IsSelectedPropertyName
-        ListViewControl = $ListView 
+        PropertyName                           = $IsSelectedPropertyName
+        ListViewControl                        = $ListView
+        HeaderSelectionAffectsVisibleItemsOnly = [bool]$HeaderSelectionAffectsVisibleItemsOnly
    }
    $headerCheckBox.Tag = $headerTagObject

@@ -356,8 +358,24 @@ function Add-SelectableGridViewColumn {
            $localPropertyName = $tagData.PropertyName
            $actualListView = $tagData.ListViewControl

-            $collectionToUpdate = if ($null -ne $actualListView.ItemsSource) { $actualListView.ItemsSource } else { $actualListView.Items }
-            if ($null -ne $collectionToUpdate) {
+            # Select either visible view items only (filtered scope) or the full backing list.
+            $collectionToUpdate = @()
+            if ($tagData.HeaderSelectionAffectsVisibleItemsOnly -and $null -ne $actualListView.ItemsSource) {
+                $collectionView = [System.Windows.Data.CollectionViewSource]::GetDefaultView($actualListView.ItemsSource)
+                if ($null -ne $collectionView) {
+                    foreach ($visibleItem in $collectionView) {
+                        $collectionToUpdate += $visibleItem
+                    }
+                }
+            }
+            elseif ($null -ne $actualListView.ItemsSource) {
+                $collectionToUpdate = @($actualListView.ItemsSource)
+            }
+            elseif ($actualListView.HasItems) {
+                $collectionToUpdate = @($actualListView.Items)
+            }
+
+            if ($collectionToUpdate.Count -gt 0) {
                foreach ($item in $collectionToUpdate) { $item.$($localPropertyName) = $true }
                $actualListView.Items.Refresh()
            }
@@ -370,8 +388,24 @@ function Add-SelectableGridViewColumn {
                $localPropertyName = $tagData.PropertyName
                $actualListView = $tagData.ListViewControl 

-                $collectionToUpdate = if ($null -ne $actualListView.ItemsSource) { $actualListView.ItemsSource } else { $actualListView.Items }
-                if ($null -ne $collectionToUpdate) {
+                # Clear either visible view items only (filtered scope) or the full backing list.
+                $collectionToUpdate = @()
+                if ($tagData.HeaderSelectionAffectsVisibleItemsOnly -and $null -ne $actualListView.ItemsSource) {
+                    $collectionView = [System.Windows.Data.CollectionViewSource]::GetDefaultView($actualListView.ItemsSource)
+                    if ($null -ne $collectionView) {
+                        foreach ($visibleItem in $collectionView) {
+                            $collectionToUpdate += $visibleItem
+                        }
+                    }
+                }
+                elseif ($null -ne $actualListView.ItemsSource) {
+                    $collectionToUpdate = @($actualListView.ItemsSource)
+                }
+                elseif ($actualListView.HasItems) {
+                    $collectionToUpdate = @($actualListView.Items)
+                }
+
+                if ($collectionToUpdate.Count -gt 0) {
                    foreach ($item in $collectionToUpdate) { $item.$($localPropertyName) = $false }
                    $actualListView.Items.Refresh()
                }
@@ -446,24 +480,38 @@ function Update-SelectAllHeaderCheckBoxState {
        [System.Windows.Controls.CheckBox]$HeaderCheckBox
    )

-    $collectionToInspect = $null
-    if ($null -ne $ListView.ItemsSource) {
+    # Determine whether this header should evaluate only visible (filtered) rows.
+    $inspectVisibleItemsOnly = $false
+    if ($null -ne $HeaderCheckBox.Tag -and $null -ne $HeaderCheckBox.Tag.PSObject.Properties['HeaderSelectionAffectsVisibleItemsOnly']) {
+        $inspectVisibleItemsOnly = [bool]$HeaderCheckBox.Tag.HeaderSelectionAffectsVisibleItemsOnly
+    }
+
+    # Build the collection to inspect based on scope (visible view vs full source).
+    $collectionToInspect = @()
+    if ($inspectVisibleItemsOnly -and $null -ne $ListView.ItemsSource) {
+        $collectionView = [System.Windows.Data.CollectionViewSource]::GetDefaultView($ListView.ItemsSource)
+        if ($null -ne $collectionView) {
+            foreach ($visibleItem in $collectionView) {
+                $collectionToInspect += $visibleItem
+            }
+        }
+    }
+    elseif ($null -ne $ListView.ItemsSource) {
        $collectionToInspect = @($ListView.ItemsSource)
    }
    elseif ($ListView.HasItems) {
-        # Check if Items collection has items and ItemsSource is null
        $collectionToInspect = @($ListView.Items)
    }

-    # If no items to inspect (either ItemsSource was null and Items was empty, or ItemsSource was empty)
-    if ($null -eq $collectionToInspect -or $collectionToInspect.Count -eq 0) {
+    # If no items are available in the selected scope, force unchecked.
+    if ($collectionToInspect.Count -eq 0) {
        $HeaderCheckBox.IsChecked = $false
        return
    }

    $selectedCount = ($collectionToInspect | Where-Object { $_.IsSelected }).Count
    WriteLog "Update-SelectAllHeaderCheckBoxState: Selected count is $selectedCount for ListView '$($ListView.Name)'."
-    $totalItemCount = $collectionToInspect.Count # Get the total count from the collection being inspected
+    $totalItemCount = $collectionToInspect.Count
    WriteLog "Update-SelectAllHeaderCheckBoxState: Total item count is $totalItemCount for ListView '$($ListView.Name)'."

    if ($totalItemCount -eq 0) {
@@ -597,7 +645,7 @@ function Invoke-ListViewSort {
            $val = $_.$property
            if ($null -eq $val) { '' } else { $val }
        }
-        Ascending = $State.Flags.lastSortAscending
+        Ascending  = $State.Flags.lastSortAscending
    }

    $sortCriteria = [System.Collections.Generic.List[hashtable]]::new()
@@ -644,7 +692,7 @@ function Invoke-ListViewSort {
                    $val = Invoke-Command -ScriptBlock $expressionScriptBlock -ArgumentList $_
                    if ($null -eq $val) { '' } else { $val }
                }
-                Ascending = $true
+                Ascending  = $true
            }
            $sortCriteria.Add($secondarySortDefinition)
        }