Improve user manager: Add drop down menu to "From host" input, containing some predefined hosts plus all unique ones from the users list.

source/usermanager.dfm

@@ -280,12 +280,16 @@ object UserManagerForm: TUserManagerForm
         ParentFont = False
         Visible = False
       end
-      object editFromHost: TEdit
+      object editFromHost: TButtonedEdit
         Left = 109
         Top = 44
         Width = 169
         Height = 21
         Anchors = [akLeft, akTop, akRight]
+        Images = MainForm.ImageListMain
+        RightButton.DropDownMenu = menuHost
+        RightButton.ImageIndex = 75
+        RightButton.Visible = True
         TabOrder = 1
         OnChange = Modification
       end
@@ -337,4 +341,32 @@ object UserManagerForm: TUserManagerForm
     TabOrder = 3
     OnClick = btnDiscardClick
   end
+  object menuHost: TPopupMenu
+    OnPopup = menuHostPopup
+    Left = 8
+    Top = 328
+    object menuHost1: TMenuItem
+      Caption = 'Access from server location only'
+      Hint = 'localhost'
+      OnClick = menuHostClick
+    end
+    object menuHost2: TMenuItem
+      Caption = 'Local network: 192.168.%'
+      Hint = '192.168.%'
+      OnClick = menuHostClick
+    end
+    object menuHost3: TMenuItem
+      Caption = 'Local network: 10.122.%'
+      Hint = '10.122.%'
+      OnClick = menuHostClick
+    end
+    object menuHostLocal4: TMenuItem
+      Caption = 'Access from everywhere'
+      Hint = '%'
+      OnClick = menuHostClick
+    end
+    object N1: TMenuItem
+      Caption = '-'
+    end
+  end
 end

source/usermanager.pas

@@ -6,7 +6,7 @@ interface
 uses
   Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, ComCtrls, StdCtrls,
   ExtCtrls, ToolWin, ClipBrd, Generics.Collections, Generics.Defaults, SynRegExpr,
-  mysql_connection, helpers, VirtualTrees;
+  mysql_connection, helpers, VirtualTrees, Menus;
 
 {$I const.inc}
 
@@ -50,7 +50,7 @@ type
     lblPassword: TLabel;
     lblUsername: TLabel;
     lblRepeatPassword: TLabel;
-    editFromHost: TEdit;
+    editFromHost: TButtonedEdit;
     editUsername: TEdit;
     editPassword: TButtonedEdit;
     editRepeatPassword: TEdit;
@@ -62,6 +62,12 @@ type
     btnCloneUser: TToolButton;
     lblWarning: TLabel;
     Label1: TLabel;
+    menuHost: TPopupMenu;
+    menuHost1: TMenuItem;
+    menuHostLocal4: TMenuItem;
+    menuHost2: TMenuItem;
+    menuHost3: TMenuItem;
+    N1: TMenuItem;
     procedure FormCreate(Sender: TObject);
     procedure FormDestroy(Sender: TObject);
     procedure FormShow(Sender: TObject);
@@ -101,6 +107,8 @@ type
     procedure listUsersHeaderClick(Sender: TVTHeader; HitInfo: TVTHeaderHitInfo);
     procedure listUsersCompareNodes(Sender: TBaseVirtualTree; Node1, Node2: PVirtualNode; Column: TColumnIndex; var Result: Integer);
     procedure listUsersAfterPaint(Sender: TBaseVirtualTree; TargetCanvas: TCanvas);
+    procedure menuHostClick(Sender: TObject);
+    procedure menuHostPopup(Sender: TObject);
   private
     { Private declarations }
     FUsers: TUserList;
@@ -1033,6 +1041,50 @@ begin
 end;
 
 
+procedure TUserManagerForm.menuHostClick(Sender: TObject);
+begin
+  // Insert predefined host
+  editFromHost.Text := (Sender as TMenuItem).Hint;
+end;
+
+
+procedure TUserManagerForm.menuHostPopup(Sender: TObject);
+var
+  Item: TMenuItem;
+  i: Integer;
+  User: TUser;
+  ItemExists: Boolean;
+begin
+  // Delete custom items and readd unique ones
+  for i:=menuHost.Items.Count-1 downto 0 do begin
+    if menuHost.Items[i].Caption = '-' then
+      break;
+    menuHost.Items.Delete(i);
+  end;
+  for User in FUsers do begin
+    if User.Host = '' then
+      Continue;
+    ItemExists := False;
+    for Item in menuHost.Items do begin
+      if Item.Hint = User.Host then begin
+        ItemExists := True;
+        Break;
+      end;
+    end;
+    if not ItemExists then begin
+      Item := TMenuItem.Create(menuHost);
+      Item.Caption := User.Host;
+      Item.Hint := User.Host;
+      Item.OnClick := menuHostClick;
+      menuHost.Items.Add(Item);
+    end;
+  end;
+  // Auto check current host if any matches
+  for Item in menuHost.Items do
+    Item.Checked := Item.Hint = editFromHost.Text;
+end;
+
+
 procedure TUserManagerForm.editPasswordRightButtonClick(Sender: TObject);
 begin
   // Auto generate a random password, display it for a second and copy it to clipboard