Add new content installer framework.

OpenRA.Mods.Common/Widgets/Logic/Installation/ModContentPromptLogic.cs

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+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets.Logic
+{
+	public class ModContentPromptLogic : ChromeLogic
+	{
+		[ObjectCreator.UseCtor]
+		public ModContentPromptLogic(Widget widget, string modId, Action continueLoading)
+		{
+			var panel = widget.Get("CONTENT_PROMPT_PANEL");
+
+			var mod = ModMetadata.AllMods[modId];
+			var content = ModMetadata.AllMods[modId].ModContent;
+
+			var headerTemplate = panel.Get<LabelWidget>("HEADER_TEMPLATE");
+			var headerLines = !string.IsNullOrEmpty(content.InstallPromptMessage) ? content.InstallPromptMessage.Replace("\\n", "\n").Split('\n') : new string[0];
+			var headerHeight = 0;
+			foreach (var l in headerLines)
+			{
+				var line = (LabelWidget)headerTemplate.Clone();
+				line.GetText = () => l;
+				line.Bounds.Y += headerHeight;
+				panel.AddChild(line);
+
+				headerHeight += headerTemplate.Bounds.Height;
+			}
+
+			panel.Bounds.Height += headerHeight;
+			panel.Bounds.Y -= headerHeight / 2;
+
+			var advancedButton = panel.Get<ButtonWidget>("ADVANCED_BUTTON");
+			advancedButton.Bounds.Y += headerHeight;
+			advancedButton.OnClick = () =>
+			{
+				Ui.OpenWindow("CONTENT_PANEL", new WidgetArgs
+				{
+					{ "modId", modId },
+					{ "onCancel", Ui.CloseWindow }
+				});
+			};
+
+			var quickButton = panel.Get<ButtonWidget>("QUICK_BUTTON");
+			quickButton.IsVisible = () => !string.IsNullOrEmpty(content.QuickDownload);
+			quickButton.Bounds.Y += headerHeight;
+			quickButton.OnClick = () =>
+			{
+				Ui.OpenWindow("PACKAGE_DOWNLOAD_PANEL", new WidgetArgs
+				{
+					{ "download", content.Downloads[content.QuickDownload] },
+					{ "onSuccess", continueLoading }
+				});
+			};
+
+			var backButton = panel.Get<ButtonWidget>("BACK_BUTTON");
+			backButton.Bounds.Y += headerHeight;
+			backButton.OnClick = Ui.CloseWindow;
+			Game.RunAfterTick(Ui.ResetTooltips);
+		}
+	}
+}