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- using System;
- using System.Collections.Generic;
- using System.Drawing;
- using System.Windows;
- using System.Windows.Controls;
- using System.Windows.Media;
- using Image = System.Windows.Controls.Image;
- namespace InABox.WPF
- {
- public static class WPFUtils
- {
- public static T? FindLogicalParent<T>(this DependencyObject dependencyObject)
- where T : DependencyObject
- {
- DependencyObject? parent = dependencyObject;
- do
- {
- parent = LogicalTreeHelper.GetParent(parent);
- } while(parent != null && parent is not T);
- return parent as T;
- }
- public static int GetRow(this Grid grid, DependencyObject dependencyObject)
- {
- while (true)
- {
- var parent = LogicalTreeHelper.GetParent(dependencyObject);
- if (parent == null)
- return -1;
- if (parent == grid)
- return Grid.GetRow(dependencyObject as UIElement);
- dependencyObject = parent;
- }
- }
- public static int GetRowSpan(this Grid grid, DependencyObject dependencyObject)
- {
- while (true)
- {
- var parent = LogicalTreeHelper.GetParent(dependencyObject);
- if (parent == null)
- return -1;
- if (parent == grid)
- return Grid.GetRowSpan(dependencyObject as UIElement);
- dependencyObject = parent;
- }
- }
-
- public static int GetColumn(this Grid grid, DependencyObject dependencyObject)
- {
- while (true)
- {
- var parent = LogicalTreeHelper.GetParent(dependencyObject);
- if (parent == null)
- return -1;
- if (parent == grid)
- return Grid.GetColumn(dependencyObject as UIElement);
- dependencyObject = parent;
- }
- }
- public static int GetColumnSpan(this Grid grid, DependencyObject dependencyObject)
- {
- while (true)
- {
- var parent = LogicalTreeHelper.GetParent(dependencyObject);
- if (parent == null)
- return -1;
- if (parent == grid)
- return Grid.GetColumnSpan(dependencyObject as UIElement);
- dependencyObject = parent;
- }
- }
-
- public static void SetGridPosition(this FrameworkElement element, int row, int column, int rowspan = 1, int colspan = 1)
- {
- element.SetValue(Grid.ColumnProperty, column);
- element.SetValue(Grid.ColumnSpanProperty, Math.Max(1, colspan));
- element.SetValue(Grid.RowProperty, row);
- element.SetValue(Grid.RowSpanProperty, Math.Max(1, rowspan));
- }
- public static IEnumerable<T> FindVisualChildren<T>(this DependencyObject depObj)
- {
- if (depObj != null)
- //ContentControl cc = depObj as ContentControl;
- //if (cc != null)
- //{
- // if (cc.Content == null)
- // yield return null;
- // if (cc.Content is T)
- // yield return cc.Content as T;
- // foreach (var child in FindVisualChildren<T>(cc.Content as DependencyObject))
- // yield return child;
- //}
- //else
- for (var i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
- {
- var child = VisualTreeHelper.GetChild(depObj, i);
- if (child is null)
- continue;
- if (child is T t)
- yield return t;
- foreach (var childOfChild in FindVisualChildren<T>(child))
- yield return childOfChild;
- }
- }
- #region Menu Utils
- private static void ItemsControlInsert(ItemsControl menu, FrameworkElement item, int index)
- {
- if (index != -1)
- {
- menu.Items.Insert(index, item);
- }
- else
- {
- menu.Items.Add(item);
- }
- }
- private static MenuItem DoAddMenuItem(ItemsControl menu, string caption, Bitmap? image, bool enabled, int index = -1)
- {
- var item = new MenuItem { Header = caption, IsEnabled = enabled };
- if (image != null)
- item.Icon = new Image() { Source = enabled ? image.AsBitmapImage(24, 24) : image.AsGrayScale().AsBitmapImage(24, 24) };
- ItemsControlInsert(menu, item, index);
- return item;
- }
- private static MenuItem DoAddMenuItem(ItemsControl menu, string caption, Bitmap? image, Action? click, bool enabled, int index = -1)
- {
- var item = DoAddMenuItem(menu, caption, image, enabled, index);
- if (click != null)
- {
- item.Click += (o, e) =>
- {
- click();
- };
- }
- return item;
- }
- private static MenuItem DoAddMenuItem<T>(ItemsControl menu, string caption, Bitmap? image, T tag, Action<T> click, bool enabled, int index = -1)
- {
- var item = DoAddMenuItem(menu, caption, image, enabled, index);
- item.Tag = tag;
- item.Click += (o, e) =>
- {
- click((T)(o as MenuItem)!.Tag);
- };
- return item;
- }
- public delegate void CheckToggleAction<T>(T tag, bool isChecked);
- private static MenuItem DoAddCheckItem<T>(ItemsControl menu, string caption, T tag, CheckToggleAction<T> click, bool isChecked, bool enabled, int index = -1)
- {
- var item = new MenuItem { Header = caption, IsEnabled = enabled, IsCheckable = true, IsChecked = isChecked };
- item.Tag = tag;
- item.Click += (o, e) =>
- {
- click((T)(o as MenuItem)!.Tag, item.IsChecked);
- };
- ItemsControlInsert(menu, item, index);
- return item;
- }
- private static Separator DoAddSeparator(ItemsControl menu, int index)
- {
- var separator = new Separator();
- ItemsControlInsert(menu, separator, index);
- return separator;
- }
- private static Separator DoAddSeparatorIfNeeded(ItemsControl menu, int index)
- {
- if (menu.Items.Count == 0) return null;
- var lastIndex = index != -1 ? index - 1 : menu.Items.Count - 1;
- if (lastIndex < 0 || lastIndex >= menu.Items.Count) return null;
- var last = menu.Items[lastIndex];
- if (last is Separator) return null;
- var separator = new Separator();
- ItemsControlInsert(menu, separator, index);
- return separator;
- }
- private static void DoRemoveUnnecessarySeparators(ItemsControl menu)
- {
- while(menu.Items.Count > 0 && menu.Items[0] is Separator)
- {
- menu.Items.RemoveAt(0);
- }
- while(menu.Items.Count > 0 && menu.Items[^1] is Separator)
- {
- menu.Items.RemoveAt(menu.Items.Count - 1);
- }
- }
- public static Separator AddSeparator(this ContextMenu menu, int index = -1) => DoAddSeparator(menu, index);
- public static Separator AddSeparator(this MenuItem menu, int index = -1) => DoAddSeparator(menu, index);
- public static Separator? AddSeparatorIfNeeded(this ContextMenu menu, int index = -1) => DoAddSeparatorIfNeeded(menu, index);
- public static Separator? AddSeparatorIfNeeded(this MenuItem menu, int index = -1) => DoAddSeparatorIfNeeded(menu, index);
- public static void RemoveUnnecessarySeparators(this ContextMenu menu) => DoRemoveUnnecessarySeparators(menu);
- public static void RemoveUnnecessarySeparators(this MenuItem menu) => DoRemoveUnnecessarySeparators(menu);
- public static MenuItem AddItem(this ContextMenu menu, string caption, Bitmap? image, Action? click, bool enabled = true, int index = -1)
- => DoAddMenuItem(menu, caption, image, click, enabled, index);
- public static MenuItem AddItem(this MenuItem menu, string caption, Bitmap? image, Action? click, bool enabled = true, int index = -1)
- => DoAddMenuItem(menu, caption, image, click, enabled, index);
- public static MenuItem AddItem<T>(this ContextMenu menu, string caption, Bitmap? image, T tag, Action<T> click, bool enabled = true, int index = -1)
- => DoAddMenuItem(menu, caption, image, tag, click, enabled, index);
- public static MenuItem AddItem<T>(this MenuItem menu, string caption, Bitmap? image, T tag, Action<T> click, bool enabled = true, int index = -1)
- => DoAddMenuItem(menu, caption, image, tag, click, enabled, index);
- public static MenuItem AddCheckItem<T>(this ContextMenu menu, string caption, T tag, CheckToggleAction<T> click, bool isChecked = false, bool enabled = true, int index = -1)
- => DoAddCheckItem<T>(menu, caption, tag, click, isChecked, enabled, index);
- #endregion
- }
- }
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