[tasque/viewmodel: 70/78] Implement due date options model

[Antonius Riha <antoniusri src gnome org>]

commit 969edd550ccd7894a92f107162f4bac28fa5e333
Author: Antonius Riha <antoniusriha gmail com>
Date:   Fri Aug 10 00:19:32 2012 +0200

    Implement due date options model
    
    This is basically the dropdown menu from which a predefined or
    custom due date can be selected for a task.

 src/libtasqueui/Legacy/DueDateOptionsModel.cs |  137 +++++++++++++++++++++++++
 src/libtasqueui/libtasqueui.csproj            |    1 +
 2 files changed, 138 insertions(+), 0 deletions(-)
---
diff --git a/src/libtasqueui/Legacy/DueDateOptionsModel.cs b/src/libtasqueui/Legacy/DueDateOptionsModel.cs
new file mode 100644
index 0000000..d372f57
--- /dev/null
+++ b/src/libtasqueui/Legacy/DueDateOptionsModel.cs
@@ -0,0 +1,137 @@
+// 
+// DueDateOptionsModel.cs
+//  
+// Author:
+//       Antonius Riha <antoniusriha gmail com>
+// 
+// Copyright (c) 2012 Antonius Riha
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using Mono.Unix;
+using CrossCommand.Generic;
+
+namespace Tasque.UIModel.Legacy
+{
+	public class DueDateOptionsModel : ViewModel, IEnumerable<string>, ITimeAware
+	{
+		internal DueDateOptionsModel (ViewModel parent) : base (parent)
+		{
+			options = new Option [10];
+			options [8] = new Option (Catalog.GetString ("No Date"), DateTime.MinValue);
+			options [9] = new Option (Catalog.GetString ("Choose Date..."), CustomDate);
+			UpdateDateOptions ();
+		}
+		
+		public DateTime CustomDate {
+			get { return customDate; }
+			set {
+				if (value != customDate) {
+					customDate = value;
+					OnPropertyChanged ("CustomDate");
+				}
+			}
+		}
+		
+		public ICommand<Option> SelectOption {
+			get {
+				if (selectOption == null) {
+					selectOption = new RelayCommand<Option> () {
+						CanExecuteAction = (option) => {
+							return option != options [9] || customDate != DateTime.MinValue;
+						},
+						ExecuteAction = (option) => {
+							SelectedOption = option;
+							if (OptionSelected != null)
+								OptionSelected (this, EventArgs.Empty);
+							Close.Execute (null);
+						}
+					};
+				}
+				return selectOption;
+			}
+		}
+		
+		public IEnumerator<string> GetEnumerator ()
+		{
+			foreach (var item in options)
+				yield return item;
+		}
+		
+		IEnumerator IEnumerable.GetEnumerator ()
+		{
+			return GetEnumerator ();
+		}
+		
+		protected override void OnClose ()
+		{
+			customDate = DateTime.MinValue;
+			SelectedOption = null;
+			base.OnClose ();
+		}
+		
+		internal Option SelectedOption { get; private set; }
+		
+		internal event EventHandler OptionSelected;
+		
+		void ITimeAware.OnDayChanged ()
+		{
+			UpdateDateOptions ();
+		}
+		
+		void UpdateDateOptions ()
+		{
+			var today = DateTime.Today;	
+			options [0] = new Option (today.ToString (Catalog.GetString ("M/d - "))
+				+ Catalog.GetString ("Today"), today);
+			
+			var tomorrow = today.AddDays (1);
+			options [1] = new Option (tomorrow.ToString (Catalog.GetString ("M/d - "))
+				+ Catalog.GetString ("Tomorrow"), tomorrow);
+			
+			var nextWeek = today.AddDays (7);
+			options [7] = new Option (nextWeek.ToString (Catalog.GetString ("M/d - "))
+				+ Catalog.GetString ("In 1 Week"), nextWeek);
+			
+			for (int i = 2; i < 7; i++) {
+				var date = today.AddDays (i);
+				options [i] = new Option (date.ToString (Catalog.GetString ("M/d - ddd")), date);
+			}
+		}
+		
+		DateTime customDate;
+		Option [] options;
+		RelayCommand<Option> selectOption;
+		
+		public class Option 
+		{
+			internal Option (string text, DateTime date)
+			{
+				Text = text;
+				Date = date;
+			}
+			
+			internal DateTime Date { get; private set; }
+			
+			public string Text { get; private set; }
+		}
+	}
+}
diff --git a/src/libtasqueui/libtasqueui.csproj b/src/libtasqueui/libtasqueui.csproj
index eec36be..f4f712a 100644
--- a/src/libtasqueui/libtasqueui.csproj
+++ b/src/libtasqueui/libtasqueui.csproj
@@ -121,6 +121,7 @@
     <Compile Include="ViewModel.cs" />
     <Compile Include="Legacy\NotesDialogModel.cs" />
     <Compile Include="Legacy\NoteModel.cs" />
+    <Compile Include="Legacy\DueDateOptionsModel.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>