Added ViewSeq add ViewCount methods to ParentView interface

CHANGELOG.md

@@ -5,6 +5,7 @@
 * Added functions: GetWhiteSpace, GetWordBreak, ScrollIntoViewIfNeeded
 * Added Popups, PopupShowAnimation, and SetPopupShowAnimation methods to Session interface
 * Added DismissWithoutAnimation add SetHotKey methods to Popup interface
+* Added ViewSeq add ViewCount methods to ParentView interface
 * Added ToBoundsProperty method to Bounds struct
 
 # v0.20.0

listView.go

@@ -2,6 +2,7 @@ package rui
 
 import (
 	"fmt"
+	"iter"
 	"strconv"
 	"strings"
 )
@@ -161,6 +162,20 @@ func (listView *listViewData) Views() []View {
 	return listView.items
 }
 
+func (listView *listViewData) ViewSeq() iter.Seq[View] {
+	return func(yield func(View) bool) {
+		for _, view := range listView.items {
+			if !yield(view) {
+				return
+			}
+		}
+	}
+}
+
+func (listView *listViewData) ViewCount() int {
+	return len(listView.items)
+}
+
 func normalizeListViewTag(tag PropertyName) PropertyName {
 	tag = defaultNormalize(tag)
 	switch tag {

resizable.go

@@ -2,6 +2,7 @@ package rui
 
 import (
 	"fmt"
+	"iter"
 	"strconv"
 	"strings"
 )
@@ -91,6 +92,21 @@ func (resizable *resizableData) Views() []View {
 	return []View{}
 }
 
+func (resizable *resizableData) ViewSeq() iter.Seq[View] {
+	return func(yield func(View) bool) {
+		if view := resizable.content(); view != nil {
+			yield(view)
+		}
+	}
+}
+
+func (resizable *resizableData) ViewCount() int {
+	if resizable.content() != nil {
+		return 1
+	}
+	return 0
+}
+
 func (resizable *resizableData) content() View {
 	if value := resizable.getRaw(Content); value != nil {
 		if content, ok := value.(View); ok {

tableView.go

@@ -2,6 +2,7 @@ package rui
 
 import (
 	"fmt"
+	"iter"
 	"strconv"
 	"strings"
 )
@@ -1694,6 +1695,20 @@ func (table *tableViewData) Views() []View {
 	return table.cellViews
 }
 
+func (table *tableViewData) ViewSeq() iter.Seq[View] {
+	return func(yield func(View) bool) {
+		for _, view := range table.cellViews {
+			if !yield(view) {
+				return
+			}
+		}
+	}
+}
+
+func (table *tableViewData) ViewCount() int {
+	return len(table.cellViews)
+}
+
 func (table *tableViewData) handleCommand(self View, command PropertyName, data DataObject) bool {
 	switch command {
 	case "currentRow":

viewsContainer.go

@@ -1,11 +1,20 @@
 package rui
 
-import "strings"
+import (
+	"iter"
+	"strings"
+)
 
 // ParentView describe a view which can have a child views
 type ParentView interface {
-	// Views return a list of child views
+	// Views returns a list of child views
 	Views() []View
+
+	// ViewSeq returns an iterator over all child views
+	ViewSeq() iter.Seq[View]
+
+	// ViewCount returns a number of child views
+	ViewCount() int
 }
 
 // ViewsContainer represent a mutable list-container of views
@@ -67,6 +76,24 @@ func (container *viewsContainerData) Views() []View {
 	return []View{}
 }
 
+func (container *viewsContainerData) ViewSeq() iter.Seq[View] {
+	if container.views == nil {
+		container.views = []View{}
+	}
+
+	return func(yield func(View) bool) {
+		for _, view := range container.views {
+			if !yield(view) {
+				return
+			}
+		}
+	}
+}
+
+func (container *viewsContainerData) ViewCount() int {
+	return len(container.views)
+}
+
 func (container *viewsContainerData) append(view View) bool {
 	if view != nil {
 		view.setParentID(container.htmlID())