UIActionSheet with iPad support

ActionSheetDatePicker.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using MonoTouch.Foundation;
using MonoTouch.UIKit;

public class ActionSheetDatePicker {
        #region -= declarations =-
        
        UIActionSheet _actionSheet;
        UIBarButtonItem _doneButton;
        UILabel titleLabel = new UILabel ();
        
        UIView _owner;
        UILabel _titleLabel = new UILabel ();
        UITabBar _tabbar;
        UIToolbar _toolbar;

        const int CHROMEWIDTHLEFT = 9;
        const int CHROMEWIDTHRIGHT = 8;

        const int MARGIN = 50;

        #endregion
        
        #region -= properties =-
        
        /// <summary>
        /// Set any datepicker properties here
        /// </summary>
        public UIDatePicker Picker
        {
                get { return picker; }
                set { picker = value; }
        }
        UIDatePicker picker = new UIDatePicker(RectangleF.Empty);
        
        /// <summary>
        /// The title that shows up for the date picker
        /// </summary>
        public string Title
        {
                get { return titleLabel.Text; }
                set { titleLabel.Text = value; }
        }
        
        #endregion
        
        #region -= constructor =-
        

        public ActionSheetDatePicker (UIView owner, UITabBar tabbar) : this(owner)
        {
                _tabbar = tabbar;
        }

        /// <summary>
        /// 
        /// </summary>
        public ActionSheetDatePicker (UIView owner)
        {
                // save our uiview owner
                this._owner = owner;
                
                // configure the title label
                titleLabel.BackgroundColor = UIColor.Clear;
                titleLabel.TextColor = UIColor.LightTextColor;
                titleLabel.Font = UIFont.BoldSystemFontOfSize (18);
                
                // create + configure the action sheet
                _actionSheet = new UIActionSheet () { Style = UIActionSheetStyle.BlackTranslucent };
                _actionSheet.Clicked += (s, e) => { Console.WriteLine ("Clicked on item {0}", e.ButtonIndex); };
                
                // add our controls to the action sheet
                _actionSheet.AddSubview (picker);
                _actionSheet.AddSubview (titleLabel);
                //actionSheet.AddSubview (doneButton);

                // Add the toolbar
                _toolbar = new UIToolbar(new RectangleF(0, 0, _actionSheet.Frame.Width, 10));
                _toolbar.BarStyle = UIBarStyle.Black;
                _toolbar.Translucent = true;

                // Add the done button
                _doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, null, null);
                _doneButton.Clicked += (object sender, EventArgs e) => {
                        _actionSheet.DismissWithClickedButtonIndex (0, true); 
                };
                
                _toolbar.Items = new UIBarButtonItem[] {
                        new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace, null, null),
                        _doneButton
                };
                
                _toolbar.SizeToFit();
                
                _actionSheet.Add (_toolbar);
        }
        
        #endregion
        
        #region -= public methods =-
        
        /// <summary>
        /// Shows the action sheet picker from the view that was set as the owner.
        /// </summary>
        public void Show ()
        {
                // declare vars
                float titleBarHeight = 40;
                SizeF actionSheetSize = new SizeF (_owner.Frame.Width, picker.Frame.Height + titleBarHeight);
                RectangleF actionSheetFrame = new RectangleF (0, (UIScreen.MainScreen.ApplicationFrame.Height - actionSheetSize.Height), actionSheetSize.Width, actionSheetSize.Height);
                
                // show the action sheet and add the controls to it
                if (_tabbar != null) {
                        _actionSheet.ShowFromTabBar (_tabbar);
                } else {
                        _actionSheet.ShowInView (_owner);
                }
                
                // resize the action sheet to fit our other stuff
                _actionSheet.Frame = actionSheetFrame;
                
                // move our picker to be at the bottom of the actionsheet (view coords are relative to the action sheet)
                picker.Frame = new RectangleF (picker.Frame.X, titleBarHeight, picker.Frame.Width, picker.Frame.Height);

                // move our label to the top of the action sheet
                _titleLabel.Frame = new RectangleF (10, 4, _owner.Frame.Width - 100, 35);

                // ipad
                if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad) {
                        var popover = _actionSheet.Superview.Superview;
                        if (popover != null)
                        {
                                var x = _actionSheet.Frame.X + MARGIN;
                                var y = (UIScreen.MainScreen.ApplicationFrame.Height - _actionSheet.Frame.Height) / 2;
                                var width = _actionSheet.Frame.Width - (MARGIN * 2);
                                var height = _actionSheet.Frame.Height;

                                popover.Frame = new RectangleF (x, y, width, height);
                                _actionSheet.Frame = new RectangleF (x, y, width - (CHROMEWIDTHLEFT + CHROMEWIDTHRIGHT), height - (CHROMEWIDTHLEFT + CHROMEWIDTHRIGHT));

                                picker.Frame = new RectangleF (picker.Frame.X, picker.Frame.Y, _actionSheet.Frame.Width, picker.Frame.Height);

                                _toolbar.SizeToFit();
                        }
                }
        }
        
        /// <summary>
        /// Dismisses the action sheet date picker
        /// </summary>
        public void Hide (bool animated)
        {
                _actionSheet.DismissWithClickedButtonIndex (0, animated);
        }
        
        #endregion              
}

ActionSheetItemPicker.cs

using System;
using MonoTouch.UIKit;
using System.Drawing;

public class ActionSheetItemPicker {
        #region -= declarations =-
        
        UIActionSheet _actionSheet;
        UIBarButtonItem _doneButton;
        UIView _owner;
        UILabel _titleLabel = new UILabel ();
        UITabBar _tabbar;
        UIToolbar _toolbar;

        const int CHROMEWIDTHLEFT = 9;
        const int CHROMEWIDTHRIGHT = 8;

        const int MARGIN = 50;

        #endregion
        
        #region -= properties =-
        
        /// <summary>
        /// Set any datepicker properties here
        /// </summary>
        public UIPickerView Picker
        {
                get { return picker; }
                set { picker = value; }
        }
        UIPickerView picker = new UIPickerView(RectangleF.Empty);
        
        /// <summary>
        /// The title that shows up for the date picker
        /// </summary>
        public string Title
        {
                get { return _titleLabel.Text; }
                set { _titleLabel.Text = value; }
        }
        
        #endregion
        
        #region -= constructor =-

        public ActionSheetItemPicker (UIView owner, UITabBar tabbar) : this(owner)
        {
                _tabbar = tabbar;
        }
        
        public ActionSheetItemPicker (UIView owner)
        {
                // save our uiview owner
                this._owner = owner;
                
                // configure the title label
                _titleLabel.BackgroundColor = UIColor.Clear;
                _titleLabel.TextColor = UIColor.LightTextColor;
                _titleLabel.Font = UIFont.BoldSystemFontOfSize (18);
                
                // create + configure the action sheet
                _actionSheet = new UIActionSheet () { Style = UIActionSheetStyle.BlackTranslucent };
                _actionSheet.Clicked += (s, e) => { Console.WriteLine ("Clicked on item {0}", e.ButtonIndex); };
                
                // add our controls to the action sheet
                _actionSheet.AddSubview (picker);
                _actionSheet.AddSubview (_titleLabel);
                //actionSheet.AddSubview (doneButton);

                // Add the toolbar
                _toolbar = new UIToolbar(new RectangleF(0, 0, _actionSheet.Frame.Width, 10));
                _toolbar.BarStyle = UIBarStyle.Black;
                _toolbar.Translucent = true;

                // Add the done button
                _doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, null, null);
                _doneButton.Clicked += (object sender, EventArgs e) => {
                        _actionSheet.DismissWithClickedButtonIndex (0, true); 
                };
                
                _toolbar.Items = new UIBarButtonItem[] {
                        new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace, null, null),
                        _doneButton
                };
                
                _toolbar.SizeToFit();
                
                _actionSheet.Add (_toolbar);
        }
        
        #endregion
        
        #region -= public methods =-
        
        /// <summary>
        /// Shows the action sheet picker from the view that was set as the owner.
        /// </summary>
        public void Show ()
        {
                // declare vars
                float titleBarHeight = 40;
                SizeF actionSheetSize = new SizeF (_owner.Frame.Width, picker.Frame.Height + titleBarHeight);
                RectangleF actionSheetFrame = new RectangleF (0, (UIScreen.MainScreen.ApplicationFrame.Height - actionSheetSize.Height), actionSheetSize.Width, actionSheetSize.Height);
                
                // show the action sheet and add the controls to it
                if (_tabbar != null) {
                        _actionSheet.ShowFromTabBar (_tabbar);
                } else {
                        _actionSheet.ShowInView (_owner);
                }
                
                // resize the action sheet to fit our other stuff
                _actionSheet.Frame = actionSheetFrame;
                
                // move our picker to be at the bottom of the actionsheet (view coords are relative to the action sheet)
                picker.Frame = new RectangleF (picker.Frame.X, titleBarHeight, picker.Frame.Width, picker.Frame.Height);

                // move our label to the top of the action sheet
                _titleLabel.Frame = new RectangleF (10, 4, _owner.Frame.Width - 100, 35);

                // ipad
                if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad) {
                        var popover = _actionSheet.Superview.Superview;
                        if (popover != null)
                        {
                                var x = _actionSheet.Frame.X + MARGIN;
                                var y = (UIScreen.MainScreen.ApplicationFrame.Height - _actionSheet.Frame.Height) / 2;
                                var width = _actionSheet.Frame.Width - (MARGIN * 2);
                                var height = _actionSheet.Frame.Height;

                                popover.Frame = new RectangleF (x, y, width, height);
                                _actionSheet.Frame = new RectangleF (x, y, width - (CHROMEWIDTHLEFT + CHROMEWIDTHRIGHT), height - (CHROMEWIDTHLEFT + CHROMEWIDTHRIGHT));

                                picker.Frame = new RectangleF (picker.Frame.X, picker.Frame.Y, _actionSheet.Frame.Width, picker.Frame.Height);

                                _toolbar.SizeToFit();
                        }
                }
        }
        
        /// <summary>
        /// Dismisses the action sheet date picker
        /// </summary>
        public void Hide (bool animated)
        {
                _actionSheet.DismissWithClickedButtonIndex (0, animated);
        }
        
        #endregion              
}