diff --git a/Example/demo.cs b/Example/demo.cs index 68307007a..31e26afa1 100644 --- a/Example/demo.cs +++ b/Example/demo.cs @@ -586,7 +586,7 @@ static class Demo { new MenuItemDetails ("F_ind", "", null), new MenuItemDetails ("_Replace", "", null), new MenuItemDetails ("_Item1", "", null), - new MenuItemDetails ("_Not From Sub Menu", "", null) + new MenuItemDetails ("_Also From Sub Menu", "", null) }; menuItems [0].Action = () => ShowMenuItem (menuItems [0]); @@ -609,8 +609,8 @@ static class Demo { new MenuItem ("_Copy", "", Copy), new MenuItem ("C_ut", "", Cut), new MenuItem ("_Paste", "", Paste), - new MenuItem ("_Find and Replace", - new MenuBarItem (new MenuItem[] {menuItems [0], menuItems [1] })), + new MenuBarItem ("_Find and Replace", + new MenuItem [] { menuItems [0], menuItems [1] }), menuItems[3] }), new MenuBarItem ("_List Demos", new MenuItem [] { @@ -622,18 +622,13 @@ static class Demo { new MenuItem ("_Show text alignments", "", () => ShowTextAlignments ()), new MenuItem ("_OnKeyDown/Press/Up", "", () => OnKeyDownPressUpDemo ()) }), - new MenuBarItem ("_Test Menu and SubMenus", new MenuItem [] { - new MenuItem ("SubMenu1Item_1", - new MenuBarItem (new MenuItem[] { - new MenuItem ("SubMenu2Item_1", - new MenuBarItem (new MenuItem [] { - new MenuItem ("SubMenu3Item_1", - new MenuBarItem (new MenuItem [] { menuItems [2] }) - ) - }) - ) + new MenuBarItem ("_Test Menu and SubMenus", new MenuBarItem [] { + new MenuBarItem ("SubMenu1Item_1", new MenuBarItem [] { + new MenuBarItem ("SubMenu2Item_1", new MenuBarItem [] { + new MenuBarItem ("SubMenu3Item_1", + new MenuItem [] { menuItems [2] }) }) - ) + }) }), new MenuBarItem ("_About...", "Demonstrates top-level menu item", () => MessageBox.ErrorQuery (50, 7, "About Demo", "This is a demo app for gui.cs", "Ok")), }); diff --git a/Terminal.Gui/Core/Toplevel.cs b/Terminal.Gui/Core/Toplevel.cs index 8d193c9fb..16bdcfd4e 100644 --- a/Terminal.Gui/Core/Toplevel.cs +++ b/Terminal.Gui/Core/Toplevel.cs @@ -253,26 +253,26 @@ namespace Terminal.Gui { public override void Add (View view) { if (this == Application.Top) { - if (view is MenuBar) - MenuBar = view as MenuBar; - if (view is StatusBar) - StatusBar = view as StatusBar; + AddMenuStatusBar (view); } base.Add (view); } + internal void AddMenuStatusBar (View view) + { + if (view is MenuBar) { + MenuBar = view as MenuBar; + } + if (view is StatusBar) { + StatusBar = view as StatusBar; + } + } + /// public override void Remove (View view) { - if (this is Toplevel && ((Toplevel)this).MenuBar != null) { - if (view is MenuBar) { - MenuBar?.Dispose (); - MenuBar = null; - } - if (view is StatusBar) { - StatusBar?.Dispose (); - StatusBar = null; - } + if (this is Toplevel toplevel && toplevel.MenuBar != null) { + RemoveMenuStatusBar (view); } base.Remove (view); } @@ -289,6 +289,18 @@ namespace Terminal.Gui { base.RemoveAll (); } + internal void RemoveMenuStatusBar (View view) + { + if (view is MenuBar) { + MenuBar?.Dispose (); + MenuBar = null; + } + if (view is StatusBar) { + StatusBar?.Dispose (); + StatusBar = null; + } + } + internal void EnsureVisibleBounds (Toplevel top, int x, int y, out int nx, out int ny) { nx = Math.Max (x, 0); @@ -341,15 +353,16 @@ namespace Terminal.Gui { top.Y = ny; } } - if (StatusBar != null) { + if (top.StatusBar != null) { if (ny + top.Frame.Height > top.Frame.Height - 1) { if (top.Height is Dim.DimFill) top.Height = Dim.Fill () - 1; } - if (StatusBar.Frame.Y != Frame.Height - 1) { - StatusBar.Y = Frame.Height - 1; - SetNeedsDisplay (); + if (top.StatusBar.Frame.Y != top.Frame.Height - 1) { + top.StatusBar.Y = top.Frame.Height - 1; + top.LayoutSubviews (); } + top.BringSubviewToFront (top.StatusBar); } } diff --git a/Terminal.Gui/Core/Window.cs b/Terminal.Gui/Core/Window.cs index 2d6ed1bbb..21f13024c 100644 --- a/Terminal.Gui/Core/Window.cs +++ b/Terminal.Gui/Core/Window.cs @@ -135,23 +135,28 @@ namespace Terminal.Gui { public override void Add (View view) { contentView.Add (view); - if (view.CanFocus) + if (view.CanFocus) { CanFocus = true; + } + AddMenuStatusBar (view); } /// public override void Remove (View view) { - if (view == null) + if (view == null) { return; + } SetNeedsDisplay (); var touched = view.Frame; contentView.Remove (view); - if (contentView.InternalSubviews.Count < 1) - this.CanFocus = false; + if (contentView.InternalSubviews.Count < 1) { + CanFocus = false; + } + RemoveMenuStatusBar (view); } /// diff --git a/Terminal.Gui/Views/Menu.cs b/Terminal.Gui/Views/Menu.cs index 5345a456b..c82c3173a 100644 --- a/Terminal.Gui/Views/Menu.cs +++ b/Terminal.Gui/Views/Menu.cs @@ -56,8 +56,9 @@ namespace Terminal.Gui { /// Title for the menu item. /// Help text to display. /// Action to invoke when the menu item is activated. - /// Function to determine if the action can currently be executred. - public MenuItem (ustring title, string help, Action action, Func canExecute = null) + /// Function to determine if the action can currently be executed. + /// The parent of this menu item. + public MenuItem (ustring title, ustring help, Action action, Func canExecute = null, MenuItem parent = null) { Title = title ?? ""; Help = help ?? ""; @@ -75,17 +76,7 @@ namespace Terminal.Gui { nextIsHot = false; } } - } - - /// - /// Initializes a new instance of - /// - /// Title for the menu item. - /// The menu sub-menu. - public MenuItem (ustring title, MenuBarItem subMenu) : this (title, "", null) - { - SubMenu = subMenu; - IsFromSubMenu = true; + Parent = parent; } /// @@ -146,11 +137,15 @@ namespace Terminal.Gui { public MenuItemCheckStyle CheckType { get; set; } /// - /// Gets or sets the parent for this + /// Gets or sets the parent for this . /// /// The parent. - internal MenuBarItem SubMenu { get; set; } - internal bool IsFromSubMenu { get; set; } + public MenuItem Parent { get; internal set; } + + /// + /// Gets if this is from a sub-menu. + /// + internal bool IsFromSubMenu { get {return Parent != null; } } /// /// Merely a debugging aid to see the interaction with main @@ -179,8 +174,9 @@ namespace Terminal.Gui { /// Title for the menu item. /// Help text to display. /// Action to invoke when the menu item is activated. - /// Function to determine if the action can currently be executred. - public MenuBarItem (ustring title, string help, Action action, Func canExecute = null) : base (title, help, action, canExecute) + /// Function to determine if the action can currently be executed. + /// The parent of this if exist, otherwise is null. + public MenuBarItem (ustring title, ustring help, Action action, Func canExecute = null, MenuItem parent = null) : base (title, help, action, canExecute, parent) { SetTitle (title ?? ""); Children = null; @@ -191,12 +187,17 @@ namespace Terminal.Gui { /// /// Title for the menu item. /// The items in the current menu. - public MenuBarItem (ustring title, MenuItem [] children) + /// The parent of this if exist, otherwise is null. + public MenuBarItem (ustring title, MenuItem [] children, MenuItem parent = null) { - if (children == null) + if (children == null) { throw new ArgumentNullException (nameof (children), "The parameter cannot be null. Use an empty array instead."); - + } SetTitle (title ?? ""); + if (parent != null) { + Parent = parent; + } + SetChildrensParent (children); Children = children; } @@ -204,24 +205,78 @@ namespace Terminal.Gui { /// Initializes a new . /// /// The items in the current menu. - public MenuBarItem (MenuItem [] children) : this (new string (' ', GetMaxTitleLength (children)), children) { } + public MenuBarItem (MenuItem [] children) : this ("", children) { } /// /// Initializes a new . /// - public MenuBarItem () : this (children: new MenuItem [] { }) { } + public MenuBarItem () : this (children: new MenuItem [] { }) { } - static int GetMaxTitleLength (MenuItem [] children) + //static int GetMaxTitleLength (MenuItem [] children) + //{ + // int maxLength = 0; + // foreach (var item in children) { + // int len = GetMenuBarItemLength (item.Title); + // if (len > maxLength) + // maxLength = len; + // item.IsFromSubMenu = true; + // } + + // return maxLength; + //} + + void SetChildrensParent (MenuItem [] childrens) { - int maxLength = 0; - foreach (var item in children) { - int len = GetMenuBarItemLength (item.Title); - if (len > maxLength) - maxLength = len; - item.IsFromSubMenu = true; + foreach (var child in childrens) { + if (child != null && child.Parent == null) { + child.Parent = this; + } } + } - return maxLength; + /// + /// Check if the children parameter is a . + /// + /// + /// Returns a or null otherwise. + public MenuBarItem SubMenu (MenuItem children) + { + return children as MenuBarItem; + } + + /// + /// Check if the parameter is a child of this. + /// + /// + /// Returns true if it is a child of this. false otherwise. + public bool IsSubMenuOf (MenuItem menuItem) + { + foreach (var child in Children) { + if (child == menuItem && child.Parent == menuItem.Parent) { + return true; + } + } + return false; + } + + /// + /// Get the index of the parameter. + /// + /// + /// Returns a value bigger than -1 if the is a child of this. + public int GetChildrenIndex (MenuItem children) + { + if (Children?.Length == 0) { + return -1; + } + int i = 0; + foreach (var child in Children) { + if (child == children) { + return i; + } + i++; + } + return -1; } void SetTitle (ustring title) @@ -229,10 +284,9 @@ namespace Terminal.Gui { if (title == null) title = ""; Title = title; - TitleLength = GetMenuBarItemLength (Title); } - static int GetMenuBarItemLength (ustring title) + int GetMenuBarItemLength (ustring title) { int len = 0; foreach (var ch in title) { @@ -255,9 +309,10 @@ namespace Terminal.Gui { /// /// The children. public MenuItem [] Children { get; set; } - internal int TitleLength { get; private set; } - internal bool IsTopLevel { get => (Children == null || Children.Length == 0); } + internal int TitleLength => GetMenuBarItemLength (Title); + + internal bool IsTopLevel { get => Parent == null && (Children == null || Children.Length == 0); } } @@ -328,7 +383,7 @@ namespace Terminal.Gui { for (int p = 0; p < Frame.Width - 2; p++) if (item == null) Driver.AddRune (Driver.HLine); - else if (p == Frame.Width - 3 && barItems.Children [i].SubMenu != null) + else if (p == Frame.Width - 3 && barItems.SubMenu(barItems.Children [i]) != null) Driver.AddRune (Driver.RightArrow); else Driver.AddRune (' '); @@ -494,7 +549,7 @@ namespace Terminal.Gui { } else { disabled = false; } - if (host.UseKeysUpDownAsKeysLeftRight && barItems.Children [current]?.SubMenu != null && + if (host.UseKeysUpDownAsKeysLeftRight && barItems.SubMenu (barItems.Children [current]) != null && !disabled && host.IsMenuOpen) { CheckSubMenu (); break; @@ -541,7 +596,7 @@ namespace Terminal.Gui { } else { disabled = false; } - if (host.UseKeysUpDownAsKeysLeftRight && barItems.Children [current]?.SubMenu != null && + if (host.UseKeysUpDownAsKeysLeftRight && barItems.SubMenu (barItems.Children [current]) != null && !disabled && host.IsMenuOpen) { CheckSubMenu (); break; @@ -592,7 +647,7 @@ namespace Terminal.Gui { if (current == -1 || barItems.Children [current] == null) { return; } - var subMenu = barItems.Children [current].SubMenu; + var subMenu = barItems.SubMenu (barItems.Children [current]); if (subMenu != null) { int pos = -1; if (host.openSubMenu != null) { @@ -602,7 +657,7 @@ namespace Terminal.Gui { host.CloseMenu (false, true); } host.Activate (host.selected, pos, subMenu); - } else if (host.openSubMenu != null && !barItems.Children [current].IsFromSubMenu) { + } else if (host.openSubMenu?.Last ().barItems.IsSubMenuOf (barItems.Children [current]) == false) { host.CloseMenu (false, true); } else { SetNeedsDisplay (); @@ -1003,7 +1058,7 @@ namespace Terminal.Gui { switch (isSubMenu) { case false: if (openMenu != null) { - SuperView.Remove (openMenu); + SuperView?.Remove (openMenu); } SetNeedsDisplay (); if (previousFocused != null && previousFocused is Menu && openMenu != null && previousFocused.ToString () != openCurrentMenu.ToString ()) @@ -1016,13 +1071,11 @@ namespace Terminal.Gui { LastFocused = lastFocused; lastFocused = null; if (LastFocused != null) { - CanFocus = false; if (!reopen) { selected = -1; } LastFocused.SetFocus (); } else { - CanFocus = true; SetFocus (); PositionCursor (); } @@ -1175,11 +1228,12 @@ namespace Terminal.Gui { CloseMenu (false, true); NextMenu (); } else { - if ((selectedSub == -1 || openSubMenu == null || openSubMenu?.Count == selectedSub) && openCurrentMenu.barItems.Children [openCurrentMenu.current].SubMenu == null) { + var subMenu = openCurrentMenu.barItems.SubMenu (openCurrentMenu.barItems.Children [openCurrentMenu.current]); + if ((selectedSub == -1 || openSubMenu == null || openSubMenu?.Count == selectedSub) && subMenu == null) { if (openSubMenu != null) CloseMenu (false, true); NextMenu (); - } else if (openCurrentMenu.barItems.Children [openCurrentMenu.current].SubMenu != null || + } else if (subMenu != null || !openCurrentMenu.barItems.Children [openCurrentMenu.current].IsFromSubMenu) selectedSub++; else diff --git a/UICatalog/Scenarios/DynamicMenuBar.cs b/UICatalog/Scenarios/DynamicMenuBar.cs new file mode 100644 index 000000000..8571ea02c --- /dev/null +++ b/UICatalog/Scenarios/DynamicMenuBar.cs @@ -0,0 +1,931 @@ +using NStack; +using System; +using System.Collections; +using System.Collections.Generic; +using System.ComponentModel; +using System.Reflection; +using System.Runtime.CompilerServices; +using System.Text; +using Terminal.Gui; + +namespace UICatalog { + [ScenarioMetadata (Name: "Dynamic MenuBar", Description: "Demonstrates how to add and remove a MenuBar, Menus and change titles dynamically.")] + [ScenarioCategory ("Dynamic")] + class DynamicMenuBar : Scenario { + public override void Run () + { + Top.Add (new DynamicMenuBarSample (Win.Title)); + base.Run (); + } + } + + class DynamicMenuItemList { + public ustring Title { get; set; } + public MenuItem MenuItem { get; set; } + + public DynamicMenuItemList () { } + + public DynamicMenuItemList (ustring title, MenuItem menuItem) + { + Title = title; + MenuItem = menuItem; + } + + public override string ToString () => $"{Title}, {MenuItem}"; + } + + class DynamicMenuItem { + public ustring title = "_New"; + public ustring help = ""; + public ustring action = ""; + public bool isTopLevel; + public bool hasSubMenu; + public MenuItemCheckStyle checkStyle; + + public DynamicMenuItem () { } + + public DynamicMenuItem (ustring title) + { + this.title = title; + } + + public DynamicMenuItem (ustring title, ustring help, ustring action, bool isTopLevel, bool hasSubMenu, MenuItemCheckStyle checkStyle = MenuItemCheckStyle.NoCheck) + { + this.title = title; + this.help = help; + this.action = action; + this.isTopLevel = isTopLevel; + this.hasSubMenu = hasSubMenu; + this.checkStyle = checkStyle; + } + } + + class DynamicMenuBarSample : Window { + MenuBar _menuBar; + MenuItem _currentMenuBarItem; + int _currentSelectedMenuBar; + MenuItem _currentEditMenuBarItem; + + public DynamicMenuItemModel DataContext { get; set; } + + public DynamicMenuBarSample (ustring title) : base (title) + { + DataContext = new DynamicMenuItemModel (); + + var _frmMenu = new FrameView ("Menus:") { + Y = 7, + Width = Dim.Percent (50), + Height = Dim.Fill () + }; + + var _btnAddMenuBar = new Button ("Add a MenuBar") { + Y = 1, + }; + _frmMenu.Add (_btnAddMenuBar); + + var _btnMenuBarUp = new Button ("^") { + X = Pos.Center () + }; + _frmMenu.Add (_btnMenuBarUp); + + var _btnMenuBarDown = new Button ("v") { + X = Pos.Center (), + Y = Pos.Bottom (_btnMenuBarUp) + }; + _frmMenu.Add (_btnMenuBarDown); + + var _btnRemoveMenuBar = new Button ("Remove a MenuBar") { + Y = 1 + }; + _btnRemoveMenuBar.X = Pos.AnchorEnd () - (Pos.Right (_btnRemoveMenuBar) - Pos.Left (_btnRemoveMenuBar)); + _frmMenu.Add (_btnRemoveMenuBar); + + var _btnPrevious = new Button ("<") { + X = Pos.Left (_btnAddMenuBar), + Y = Pos.Top (_btnAddMenuBar) + 2 + }; + _frmMenu.Add (_btnPrevious); + + var _btnAdd = new Button (" Add ") { + Y = Pos.Top (_btnPrevious) + 2, + }; + _btnAdd.X = Pos.AnchorEnd () - (Pos.Right (_btnAdd) - Pos.Left (_btnAdd)); + _frmMenu.Add (_btnAdd); + + var _btnNext = new Button (">") { + X = Pos.X (_btnAdd), + Y = Pos.Top (_btnPrevious), + }; + _frmMenu.Add (_btnNext); + + var _lblMenuBar = new Label () { + ColorScheme = Colors.Dialog, + TextAlignment = TextAlignment.Centered, + X = Pos.Right (_btnPrevious) + 1, + Y = Pos.Top (_btnPrevious), + Width = Dim.Fill () - Dim.Width (_btnAdd) - 1, + Height = 1 + }; + _frmMenu.Add (_lblMenuBar); + _lblMenuBar.WantMousePositionReports = true; + _lblMenuBar.CanFocus = true; + + var _lblParent = new Label () { + TextAlignment = TextAlignment.Centered, + X = Pos.Right (_btnPrevious) + 1, + Y = Pos.Top (_btnPrevious) + 1, + Width = Dim.Fill () - Dim.Width (_btnAdd) - 1 + }; + _frmMenu.Add (_lblParent); + + var _btnPreviowsParent = new Button ("..") { + X = Pos.Left (_btnAddMenuBar), + Y = Pos.Top (_btnPrevious) + 1 + }; + _frmMenu.Add (_btnPreviowsParent); + + var _lstMenus = new ListView (new List ()) { + ColorScheme = Colors.Dialog, + X = Pos.Right (_btnPrevious) + 1, + Y = Pos.Top (_btnPrevious) + 2, + Width = _lblMenuBar.Width, + Height = Dim.Fill (), + }; + _frmMenu.Add (_lstMenus); + + _lblMenuBar.TabIndex = _btnPrevious.TabIndex + 1; + _lstMenus.TabIndex = _lblMenuBar.TabIndex + 1; + _btnNext.TabIndex = _lstMenus.TabIndex + 1; + _btnAdd.TabIndex = _btnNext.TabIndex + 1; + + var _btnRemove = new Button ("Remove") { + X = Pos.Left (_btnAdd), + Y = Pos.Top (_btnAdd) + 1 + }; + _frmMenu.Add (_btnRemove); + + var _btnUp = new Button ("^") { + X = Pos.Right (_lstMenus) + 2, + Y = Pos.Top (_btnRemove) + 2 + }; + _frmMenu.Add (_btnUp); + + var _btnDown = new Button ("v") { + X = Pos.Right (_lstMenus) + 2, + Y = Pos.Top (_btnUp) + 1 + }; + _frmMenu.Add (_btnDown); + + Add (_frmMenu); + + var _frmMenuDetails = new FrameView ("Menu Details:") { + X = Pos.Right (_frmMenu), + Y = Pos.Top (_frmMenu), + Width = Dim.Fill (), + Height = Dim.Fill () + }; + + var _lblTitle = new Label ("Title:") { + Y = 1 + }; + _frmMenuDetails.Add (_lblTitle); + + var _txtTitle = new TextField () { + X = Pos.Right (_lblTitle) + 2, + Y = Pos.Top (_lblTitle), + Width = Dim.Fill () + }; + _frmMenuDetails.Add (_txtTitle); + + var _lblHelp = new Label ("Help:") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_lblTitle) + 1 + }; + _frmMenuDetails.Add (_lblHelp); + + var _txtHelp = new TextField () { + X = Pos.Left (_txtTitle), + Y = Pos.Top (_lblHelp), + Width = Dim.Fill () + }; + _frmMenuDetails.Add (_txtHelp); + + var _lblAction = new Label ("Action:") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_lblHelp) + 1 + }; + _frmMenuDetails.Add (_lblAction); + + var _txtAction = new TextView () { + ColorScheme = Colors.Dialog, + X = Pos.Left (_txtTitle), + Y = Pos.Top (_lblAction), + Width = Dim.Fill (), + Height = 5 + }; + _frmMenuDetails.Add (_txtAction); + + var _ckbIsTopLevel = new CheckBox ("IsTopLevel") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_lblAction) + 5 + }; + _frmMenuDetails.Add (_ckbIsTopLevel); + + var _ckbSubMenu = new CheckBox ("Has sub-menus") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_ckbIsTopLevel) + }; + _frmMenuDetails.Add (_ckbSubMenu); + _ckbIsTopLevel.Toggled = (e) => { + if (_ckbIsTopLevel.Checked && _currentEditMenuBarItem.Parent != null) { + MessageBox.ErrorQuery ("Invalid IsTopLevel", "Only menu bar can have top level menu item!", "Ok"); + _ckbIsTopLevel.Checked = false; + return; + } + if (_ckbIsTopLevel.Checked) { + _ckbSubMenu.Checked = false; + _ckbSubMenu.SetNeedsDisplay (); + _txtAction.ReadOnly = false; + } else { + _txtAction.ReadOnly = true; + } + }; + _ckbSubMenu.Toggled = (e) => { + if (_ckbSubMenu.Checked) { + _ckbIsTopLevel.Checked = false; + _ckbIsTopLevel.SetNeedsDisplay (); + _txtAction.ReadOnly = true; + } else { + _txtAction.ReadOnly = false; + } + }; + + var _rChkLabels = new ustring [] { "NoCheck", "Checked", "Radio" }; + var _rbChkStyle = new RadioGroup (_rChkLabels) { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_ckbSubMenu) + 1, + }; + _frmMenuDetails.Add (_rbChkStyle); + + var _btnOk = new Button ("Ok") { + X = Pos.Left (_lblTitle) + 20, + Y = Pos.Bottom (_rbChkStyle) + 1, + Clicked = () => { + if (ustring.IsNullOrEmpty (_txtTitle.Text) && _currentEditMenuBarItem != null) { + MessageBox.ErrorQuery ("Invalid title", "Must enter a valid title!.", "Ok"); + } else if (_currentEditMenuBarItem != null) { + var menuItem = new DynamicMenuItem (_txtTitle.Text, _txtHelp.Text, _txtAction.Text, _ckbIsTopLevel != null ? _ckbIsTopLevel.Checked : false, _ckbSubMenu != null ? _ckbSubMenu.Checked : false, _rbChkStyle.SelectedItem == 0 ? MenuItemCheckStyle.NoCheck : _rbChkStyle.SelectedItem == 1 ? MenuItemCheckStyle.Checked : MenuItemCheckStyle.Radio); + UpdateMenuItem (_currentEditMenuBarItem, menuItem, _lstMenus.SelectedItem); + } + } + }; + _frmMenuDetails.Add (_btnOk); + + var _btnCancel = new Button ("Cancel") { + X = Pos.Right (_btnOk) + 3, + Y = Pos.Top (_btnOk), + Clicked = () => { + _txtTitle.Text = ustring.Empty; + } + }; + _frmMenuDetails.Add (_btnCancel); + + Add (_frmMenuDetails); + + _btnAdd.Clicked = () => { + if (MenuBar == null) { + MessageBox.ErrorQuery ("Menu Bar Error", "Must add a MenuBar first!", "Ok"); + _btnAddMenuBar.SetFocus (); + return; + } + + var item = EnterMenuItem (_currentMenuBarItem); + if (ustring.IsNullOrEmpty (item.title)) { + return; + } + + if (!(_currentMenuBarItem is MenuBarItem)) { + var parent = _currentMenuBarItem.Parent as MenuBarItem; + var idx = parent.GetChildrenIndex (_currentMenuBarItem); + _currentMenuBarItem = new MenuBarItem (_currentMenuBarItem.Title, new MenuItem [] { new MenuItem ("_New", "", CreateAction (_currentEditMenuBarItem, new DynamicMenuItem ())) }, _currentMenuBarItem.Parent); + _currentMenuBarItem.CheckType = item.checkStyle; + parent.Children [idx] = _currentMenuBarItem; + } else { + MenuItem newMenu = CreateNewMenu (item, _currentMenuBarItem); + var menuBarItem = _currentMenuBarItem as MenuBarItem; + if (menuBarItem == null) { + menuBarItem = new MenuBarItem (_currentMenuBarItem.Title, new MenuItem [] { newMenu }, _currentMenuBarItem.Parent); + } else if (menuBarItem.Children == null) { + menuBarItem.Children = new MenuItem [] { newMenu }; + } else { + var childrens = menuBarItem.Children; + Array.Resize (ref childrens, childrens.Length + 1); + childrens [childrens.Length - 1] = newMenu; + menuBarItem.Children = childrens; + } + DataContext.Menus.Add (new DynamicMenuItemList (newMenu.Title, newMenu)); + _lstMenus.MoveDown (); + } + }; + + _btnRemove.Clicked = () => { + var menuItem = DataContext.Menus.Count > 0 ? DataContext.Menus [_lstMenus.SelectedItem].MenuItem : null; + if (menuItem != null) { + var childrens = ((MenuBarItem)_currentMenuBarItem).Children; + childrens [_lstMenus.SelectedItem] = null; + int i = 0; + foreach (var c in childrens) { + if (c != null) { + childrens [i] = c; + i++; + } + } + Array.Resize (ref childrens, childrens.Length - 1); + if (childrens.Length == 0) { + if (_currentMenuBarItem.Parent == null) { + ((MenuBarItem)_currentMenuBarItem).Children = null; + _currentMenuBarItem.Action = CreateAction (_currentEditMenuBarItem, new DynamicMenuItem (_currentMenuBarItem.Title)); + } else { + _currentMenuBarItem = new MenuItem (_currentMenuBarItem.Title, _currentMenuBarItem.Help, CreateAction (_currentEditMenuBarItem, new DynamicMenuItem (_currentEditMenuBarItem.Title)), null, _currentMenuBarItem.Parent); + } + } else { + ((MenuBarItem)_currentMenuBarItem).Children = childrens; + } + DataContext.Menus.RemoveAt (_lstMenus.SelectedItem); + } + }; + + _btnMenuBarUp.Clicked = () => { + var i = _currentSelectedMenuBar; + var menuItem = _menuBar != null && _menuBar.Menus.Length > 0 ? _menuBar.Menus [i] : null; + if (menuItem != null) { + var menus = _menuBar.Menus; + if (i > 0) { + menus [i] = menus [i - 1]; + menus [i - 1] = menuItem; + _currentSelectedMenuBar = i - 1; + _menuBar.SetNeedsDisplay (); + } + } + }; + + _btnMenuBarDown.Clicked = () => { + var i = _currentSelectedMenuBar; + var menuItem = _menuBar != null && _menuBar.Menus.Length > 0 ? _menuBar.Menus [i] : null; + if (menuItem != null) { + var menus = _menuBar.Menus; + if (i < menus.Length - 1) { + menus [i] = menus [i + 1]; + menus [i + 1] = menuItem; + _currentSelectedMenuBar = i + 1; + _menuBar.SetNeedsDisplay (); + } + } + }; + + _btnUp.Clicked = () => { + var i = _lstMenus.SelectedItem; + var menuItem = DataContext.Menus.Count > 0 ? DataContext.Menus [i].MenuItem : null; + if (menuItem != null) { + var childrens = ((MenuBarItem)_currentMenuBarItem).Children; + if (i > 0) { + childrens [i] = childrens [i - 1]; + childrens [i - 1] = menuItem; + DataContext.Menus [i] = DataContext.Menus [i - 1]; + DataContext.Menus [i - 1] = new DynamicMenuItemList (menuItem.Title, menuItem); + _lstMenus.SelectedItem = i - 1; + } + } + }; + + _btnDown.Clicked = () => { + var i = _lstMenus.SelectedItem; + var menuItem = DataContext.Menus.Count > 0 ? DataContext.Menus [i].MenuItem : null; + if (menuItem != null) { + var childrens = ((MenuBarItem)_currentMenuBarItem).Children; + if (i < childrens.Length - 1) { + childrens [i] = childrens [i + 1]; + childrens [i + 1] = menuItem; + DataContext.Menus [i] = DataContext.Menus [i + 1]; + DataContext.Menus [i + 1] = new DynamicMenuItemList (menuItem.Title, menuItem); + _lstMenus.SelectedItem = i + 1; + } + } + }; + + _btnAddMenuBar.Clicked = () => { + var item = EnterMenuItem (null); + if (ustring.IsNullOrEmpty (item.title)) { + return; + } + + if (MenuBar == null) { + _menuBar = new MenuBar (); + Add (_menuBar); + } + var newMenu = CreateNewMenu (item) as MenuBarItem; + + var menus = _menuBar.Menus; + Array.Resize (ref menus, menus.Length + 1); + menus [^1] = newMenu; + _menuBar.Menus = menus; + _currentMenuBarItem = newMenu; + _currentMenuBarItem.CheckType = item.checkStyle; + _currentSelectedMenuBar = menus.Length - 1; + _menuBar.Menus [_currentSelectedMenuBar] = newMenu; + _lblMenuBar.Text = newMenu.Title; + SetListViewSource (_currentMenuBarItem, true); + EditMenuBarItem (_menuBar.Menus [_currentSelectedMenuBar]); + _menuBar.SetNeedsDisplay (); + }; + + _btnRemoveMenuBar.Clicked = () => { + if (_menuBar != null && _menuBar.Menus.Length > 0) { + _menuBar.Menus [_currentSelectedMenuBar] = null; + int i = 0; + foreach (var m in _menuBar.Menus) { + if (m != null) { + _menuBar.Menus [i] = m; + i++; + } + } + var menus = _menuBar.Menus; + Array.Resize (ref menus, menus.Length - 1); + _menuBar.Menus = menus; + if (_currentSelectedMenuBar - 1 >= 0 && _menuBar.Menus.Length > 0) { + _currentSelectedMenuBar--; + } + _currentMenuBarItem = _menuBar.Menus?.Length > 0 ? _menuBar.Menus [_currentSelectedMenuBar] : null; + } + if (MenuBar != null && _currentMenuBarItem == null && _menuBar.Menus.Length == 0) { + Remove (_menuBar); + _menuBar = null; + DataContext.Menus = new List (); + _currentMenuBarItem = null; + _currentSelectedMenuBar = -1; + _lblMenuBar.Text = ustring.Empty; + } else { + _lblMenuBar.Text = _menuBar.Menus [_currentSelectedMenuBar].Title; + } + SetListViewSource (_currentMenuBarItem, true); + EditMenuBarItem (null); + }; + + _lblMenuBar.Enter = (e) => { + if (_menuBar?.Menus != null) { + _currentMenuBarItem = _menuBar.Menus [_currentSelectedMenuBar]; + EditMenuBarItem (_menuBar.Menus [_currentSelectedMenuBar]); + } + }; + + _btnPrevious.Clicked = () => { + if (_currentSelectedMenuBar - 1 > -1) { + _currentSelectedMenuBar--; + } + SelectCurrentMenuBarItem (); + }; + + _btnNext.Clicked = () => { + if (_menuBar != null && _currentSelectedMenuBar + 1 < _menuBar.Menus.Length) { + _currentSelectedMenuBar++; + } + SelectCurrentMenuBarItem (); + }; + + _lstMenus.SelectedItemChanged = (e) => { + var menuBarItem = DataContext.Menus.Count > 0 ? DataContext.Menus [e.Item].MenuItem : null; + EditMenuBarItem (menuBarItem); + }; + + _lstMenus.OpenSelectedItem = (e) => { + _currentMenuBarItem = DataContext.Menus [e.Item].MenuItem; + DataContext.Parent = _currentMenuBarItem.Title; + DataContext.Menus = new List (); + SetListViewSource (_currentMenuBarItem, true); + var menuBarItem = DataContext.Menus.Count > 0 ? DataContext.Menus [0].MenuItem : null; + EditMenuBarItem (menuBarItem); + }; + + _btnPreviowsParent.Clicked = () => { + if (_currentMenuBarItem != null && _currentMenuBarItem.Parent != null) { + var mi = _currentMenuBarItem; + _currentMenuBarItem = _currentMenuBarItem.Parent as MenuBarItem; + SetListViewSource (_currentMenuBarItem, true); + var i = ((MenuBarItem)_currentMenuBarItem).GetChildrenIndex (mi); + if (i > -1) { + _lstMenus.SelectedItem = i; + } + if (_currentMenuBarItem.Parent != null) { + DataContext.Parent = _currentMenuBarItem.Title; + } else { + DataContext.Parent = ustring.Empty; + } + } else { + DataContext.Parent = ustring.Empty; + } + }; + + var ustringConverter = new UStringValueConverter (); + var listWrapperConverter = new ListWrapperConverter (); + + var lblMenuBar = new Binding (this, "MenuBar", _lblMenuBar, "Text", ustringConverter); + var lblParent = new Binding (this, "Parent", _lblParent, "Text", ustringConverter); + var lstMenus = new Binding (this, "Menus", _lstMenus, "Source", listWrapperConverter); + + + ustring GetTargetAction (Action action) + { + var me = action.Target; + + if (me == null) { + throw new ArgumentException (); + } + object v = new object (); + foreach (var field in me.GetType ().GetFields ()) { + if (field.Name == "item") { + v = field.GetValue (me); + } + } + return v == null || !(v is DynamicMenuItem item) ? ustring.Empty : item.action; + } + + Action CreateAction (MenuItem menuItem, DynamicMenuItem item) + { + switch (menuItem.CheckType) { + case MenuItemCheckStyle.NoCheck: + return new Action (() => MessageBox.ErrorQuery (item.title, item.action, "Ok")); + case MenuItemCheckStyle.Checked: + return new Action (() => menuItem.Checked = !menuItem.Checked); + case MenuItemCheckStyle.Radio: + break; + } + return new Action (() => { + menuItem.Checked = true; + var parent = menuItem?.Parent as MenuBarItem; + if (parent != null) { + var childrens = parent.Children; + for (int i = 0; i < childrens.Length; i++) { + var child = childrens [i]; + if (child != menuItem) { + child.Checked = false; + } + } + } + }); + } + + void SetListViewSource (MenuItem _currentMenuBarItem, bool fill = false) + { + DataContext.Menus = new List (); + var menuBarItem = _currentMenuBarItem as MenuBarItem; + if (menuBarItem != null && menuBarItem?.Children == null) { + return; + } + if (!fill) { + return; + } + if (menuBarItem != null) { + foreach (var child in menuBarItem?.Children) { + var m = new DynamicMenuItemList (child.Title, child); + DataContext.Menus.Add (m); + } + } + } + + void EditMenuBarItem (MenuItem menuBarItem) + { + if (menuBarItem == null) { + _frmMenuDetails.CanFocus = false; + } else { + _frmMenuDetails.CanFocus = true; + } + _currentEditMenuBarItem = menuBarItem; + _txtTitle.Text = menuBarItem?.Title ?? ""; + _txtHelp.Text = menuBarItem?.Help ?? ""; + _txtAction.Text = menuBarItem != null && menuBarItem.Action != null ? GetTargetAction (menuBarItem.Action) : ustring.Empty; + _ckbIsTopLevel.Checked = IsTopLevel (menuBarItem); + _ckbSubMenu.Checked = HasSubMenus (menuBarItem); + _rbChkStyle.SelectedItem = (int)(menuBarItem?.CheckType ?? MenuItemCheckStyle.NoCheck); + } + + void UpdateMenuItem (MenuItem _currentEditMenuBarItem, DynamicMenuItem menuItem, int index) + { + _currentEditMenuBarItem.Title = menuItem.title; + _currentEditMenuBarItem.Help = menuItem.help; + _currentEditMenuBarItem.CheckType = menuItem.checkStyle; + var parent = _currentEditMenuBarItem.Parent as MenuBarItem; + if (parent != null && parent.Children.Length == 1 && _currentEditMenuBarItem.CheckType == MenuItemCheckStyle.Radio) { + _currentEditMenuBarItem.Checked = true; + } + if (menuItem.isTopLevel && _currentEditMenuBarItem is MenuBarItem) { + ((MenuBarItem)_currentEditMenuBarItem).Children = null; + _currentEditMenuBarItem.Action = CreateAction (_currentEditMenuBarItem, menuItem); + SetListViewSource (_currentEditMenuBarItem, true); + } else if (menuItem.hasSubMenu) { + _currentEditMenuBarItem.Action = null; + if (_currentEditMenuBarItem is MenuBarItem && ((MenuBarItem)_currentEditMenuBarItem).Children == null) { + ((MenuBarItem)_currentEditMenuBarItem).Children = new MenuItem [] { new MenuItem ("_New", "", CreateAction (_currentEditMenuBarItem, new DynamicMenuItem ())) }; + } else if (_currentEditMenuBarItem.Parent != null) { + UpdateParent (ref _currentEditMenuBarItem); + } else { + _currentEditMenuBarItem = new MenuBarItem (_currentEditMenuBarItem.Title, new MenuItem [] { new MenuItem ("_New", "", CreateAction (_currentEditMenuBarItem, new DynamicMenuItem ())) }, _currentEditMenuBarItem.Parent); + } + SetListViewSource (_currentEditMenuBarItem, true); + } else if (_currentEditMenuBarItem is MenuBarItem && _currentEditMenuBarItem.Parent != null) { + UpdateParent (ref _currentEditMenuBarItem); + _currentEditMenuBarItem = new MenuItem (menuItem.title, menuItem.help, CreateAction (_currentEditMenuBarItem, menuItem), null, _currentEditMenuBarItem.Parent); + } else { + if (_currentEditMenuBarItem is MenuBarItem) { + ((MenuBarItem)_currentEditMenuBarItem).Children = null; + DataContext.Menus = new List (); + } + _currentEditMenuBarItem.Action = CreateAction (_currentEditMenuBarItem, menuItem); + } + + if (_currentEditMenuBarItem.Parent == null) { + DataContext.MenuBar = _currentEditMenuBarItem.Title; + } else { + DataContext.Menus [index] = new DynamicMenuItemList (_currentEditMenuBarItem.Title, _currentEditMenuBarItem); + } + _currentEditMenuBarItem.CheckType = menuItem.checkStyle; + EditMenuBarItem (_currentEditMenuBarItem); + } + + void UpdateParent (ref MenuItem menuItem) + { + var parent = menuItem.Parent as MenuBarItem; + var idx = parent.GetChildrenIndex (menuItem); + if (!(menuItem is MenuBarItem)) { + menuItem = new MenuBarItem (menuItem.Title, new MenuItem [] { new MenuItem ("_New", "", CreateAction (menuItem, new DynamicMenuItem ())) }, menuItem.Parent); + if (idx > -1) { + parent.Children [idx] = menuItem; + } + } else { + menuItem = new MenuItem (menuItem.Title, menuItem.Help, CreateAction (menuItem, new DynamicMenuItem ()), null, menuItem.Parent); + if (idx > -1) { + parent.Children [idx] = menuItem; + } + } + } + + bool IsTopLevel (MenuItem menuItem) + { + var topLevel = menuItem as MenuBarItem; + if (topLevel != null && topLevel.Parent == null && (topLevel.Children == null || topLevel.Children.Length == 0)) { + return true; + } else { + return false; + } + } + + bool HasSubMenus (MenuItem menuItem) + { + var menuBarItem = menuItem as MenuBarItem; + if (menuBarItem != null && menuBarItem.Children != null && menuBarItem.Children.Length > 0) { + return true; + } else { + return false; + } + } + + void SelectCurrentMenuBarItem () + { + MenuBarItem menuBarItem = null; + if (_menuBar?.Menus != null) { + menuBarItem = _menuBar.Menus [_currentSelectedMenuBar]; + _lblMenuBar.Text = menuBarItem.Title; + } + EditMenuBarItem (menuBarItem); + _currentMenuBarItem = menuBarItem; + DataContext.Menus = new List (); + SetListViewSource (_currentMenuBarItem, true); + _lblParent.Text = ustring.Empty; + } + + DynamicMenuItem EnterMenuItem (MenuItem menuItem) + { + var _lblTitle = new Label (1, 3, "Title:"); + var _txtTitle = new TextField ("_New") { + X = Pos.Right (_lblTitle) + 2, + Y = Pos.Top (_lblTitle), + Width = Dim.Fill (), + }; + var _lblHelp = new Label ("Help:") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_lblTitle) + 1 + }; + var _txtHelp = new TextField () { + X = Pos.Left (_txtTitle), + Y = Pos.Top (_lblHelp), + Width = Dim.Fill (), + }; + var _lblAction = new Label ("Action:") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_lblHelp) + 1 + }; + var _txtAction = new TextView () { + ColorScheme = Colors.Menu, + X = Pos.Left (_txtTitle), + Y = Pos.Top (_lblAction), + Width = Dim.Fill (), + Height = 5, + ReadOnly = true + }; + var _ckbIsTopLevel = new CheckBox ("IsTopLevel") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_lblAction) + 5 + }; + var _ckbSubMenu = new CheckBox ("Has sub-menus") { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_ckbIsTopLevel), + Checked = menuItem == null + }; + _ckbIsTopLevel.Toggled = (e) => { + if (_ckbIsTopLevel.Checked && menuItem != null) { + MessageBox.ErrorQuery ("Invalid IsTopLevel", "Only menu bar can have top level menu item!", "Ok"); + _ckbIsTopLevel.Checked = false; + return; + } + if (_ckbIsTopLevel.Checked) { + _ckbSubMenu.Checked = false; + _ckbSubMenu.SetNeedsDisplay (); + _txtAction.ReadOnly = false; + } else { + _txtAction.ReadOnly = true; + } + }; + _ckbSubMenu.Toggled = (e) => { + if (_ckbSubMenu.Checked) { + _ckbIsTopLevel.Checked = false; + _ckbIsTopLevel.SetNeedsDisplay (); + _txtAction.ReadOnly = true; + } else { + _txtAction.ReadOnly = false; + } + }; + var _rChkLabels = new ustring [] { "NoCheck", "Checked", "Radio" }; + var _rbChkStyle = new RadioGroup (_rChkLabels) { + X = Pos.Left (_lblTitle), + Y = Pos.Bottom (_ckbSubMenu) + 1, + }; + var _btnOk = new Button ("Ok") { + IsDefault = true, + Clicked = () => { + if (ustring.IsNullOrEmpty (_txtTitle.Text)) { + MessageBox.ErrorQuery ("Invalid title", "Must enter a valid title!.", "Ok"); + } else { + Application.RequestStop (); + } + } + }; + var _btnCancel = new Button ("Cancel") { + Clicked = () => { + _txtTitle.Text = ustring.Empty; + Application.RequestStop (); + } + }; + var _dialog = new Dialog ("Please enter the menu details.", _btnOk, _btnCancel); + _dialog.Add (_lblTitle, _txtTitle, _lblHelp, _txtHelp, _lblAction, _txtAction, _ckbIsTopLevel, _ckbSubMenu, _rbChkStyle); + _txtTitle.SetFocus (); + Application.Run (_dialog); + + return new DynamicMenuItem (_txtTitle.Text, _txtHelp.Text, _txtAction.Text, _ckbIsTopLevel != null ? _ckbIsTopLevel.Checked : false, _ckbSubMenu != null ? _ckbSubMenu.Checked : false, _rbChkStyle.SelectedItem == 0 ? MenuItemCheckStyle.NoCheck : _rbChkStyle.SelectedItem == 1 ? MenuItemCheckStyle.Checked : MenuItemCheckStyle.Radio); + } + + MenuItem CreateNewMenu (DynamicMenuItem item, MenuItem parent = null) + { + MenuItem newMenu; + if (item.hasSubMenu) { + newMenu = new MenuBarItem (item.title, new MenuItem [] { new MenuItem ("_New", "", null) }, parent); + ((MenuBarItem)newMenu).Children [0].Action = CreateAction (newMenu, new DynamicMenuItem ()); + } else if (parent != null) { + newMenu = new MenuItem (item.title, item.help, null, null, parent); + newMenu.CheckType = item.checkStyle; + newMenu.Action = CreateAction (newMenu, item); + } else { + newMenu = new MenuBarItem (item.title, item.help, null); + ((MenuBarItem)newMenu).Children [0].Action = CreateAction (newMenu, item); + } + + return newMenu; + } + } + } + + class DynamicMenuItemModel : INotifyPropertyChanged { + public event PropertyChangedEventHandler PropertyChanged; + + private ustring menuBar; + private ustring parent; + private List menus; + + public ustring MenuBar { + get => menuBar; + set { + if (value != menuBar) { + menuBar = value; + PropertyChanged?.Invoke (this, new PropertyChangedEventArgs (GetPropertyName ())); + } + } + } + + public ustring Parent { + get => parent; + set { + if (value != parent) { + parent = value; + PropertyChanged?.Invoke (this, new PropertyChangedEventArgs (GetPropertyName ())); + } + } + } + + public List Menus { + get => menus; + set { + if (value != menus) { + menus = value; + PropertyChanged?.Invoke (this, new PropertyChangedEventArgs (GetPropertyName ())); + } + } + } + + public DynamicMenuItemModel () + { + Menus = new List (); + } + + public string GetPropertyName ([CallerMemberName] string propertyName = null) + { + return propertyName; + } + } + + public interface IValueConverter { + object Convert (object value, object parameter = null); + } + + public class Binding { + public View Target { get; private set; } + public View Source { get; private set; } + + public string SourcePropertyName { get; private set; } + public string TargetPropertyName { get; private set; } + + private object sourceDataContext; + private PropertyInfo sourceBindingProperty; + private IValueConverter valueConverter; + + public Binding (View source, string sourcePropertyName, View target, string targetPropertyName, IValueConverter valueConverter = null) + { + Target = target; + Source = source; + SourcePropertyName = sourcePropertyName; + TargetPropertyName = targetPropertyName; + sourceDataContext = Source.GetType ().GetProperty ("DataContext").GetValue (Source); + sourceBindingProperty = sourceDataContext.GetType ().GetProperty (SourcePropertyName); + this.valueConverter = valueConverter; + UpdateTarget (); + + var notifier = ((INotifyPropertyChanged)sourceDataContext); + if (notifier != null) { + notifier.PropertyChanged += (s, e) => { + if (e.PropertyName == SourcePropertyName) { + UpdateTarget (); + } + }; + } + } + + private void UpdateTarget () + { + try { + var sourceValue = sourceBindingProperty.GetValue (sourceDataContext); + if (sourceValue == null) { + return; + } + + var finalValue = valueConverter?.Convert (sourceValue) ?? sourceValue; + + var targetProperty = Target.GetType ().GetProperty (TargetPropertyName); + targetProperty.SetValue (Target, finalValue); + } catch (Exception ex) { + MessageBox.ErrorQuery ("Binding Error", $"Binding failed: {ex}.", "Ok"); + } + } + } + + public class ListWrapperConverter : IValueConverter { + public object Convert (object value, object parameter = null) + { + return new ListWrapper ((IList)value); + } + } + + public class UStringValueConverter : IValueConverter { + public object Convert (object value, object parameter = null) + { + var data = Encoding.ASCII.GetBytes (value.ToString ()); + return ustring.Make (data); + } + } +}