Create TimelineDataSource as part of making TimelineViewController less big.

Evergreen.xcodeproj/project.pbxproj

@@ -17,6 +17,7 @@
 		840D61A12029031E009BC708 /* Evergreen_iOSUITests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 840D61A02029031E009BC708 /* Evergreen_iOSUITests.swift */; };
 		8414AD251FCF5A1E00955102 /* TimelineHeaderView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8414AD241FCF5A1E00955102 /* TimelineHeaderView.swift */; };
 		84162A152038C12C00035290 /* MarkCommandValidationStatus.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84162A142038C12C00035290 /* MarkCommandValidationStatus.swift */; };
+		84162A252038C1E000035290 /* TimelineDataSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84162A242038C1E000035290 /* TimelineDataSource.swift */; };
 		841ABA4E20145E7300980E11 /* NothingInspectorViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 841ABA4D20145E7300980E11 /* NothingInspectorViewController.swift */; };
 		841ABA5E20145E9200980E11 /* FolderInspectorViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 841ABA5D20145E9200980E11 /* FolderInspectorViewController.swift */; };
 		841ABA6020145EC100980E11 /* BuiltinSmartFeedInspectorViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 841ABA5F20145EC100980E11 /* BuiltinSmartFeedInspectorViewController.swift */; };
@@ -534,6 +535,7 @@
 		840D61A22029031E009BC708 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		8414AD241FCF5A1E00955102 /* TimelineHeaderView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineHeaderView.swift; sourceTree = "<group>"; };
 		84162A142038C12C00035290 /* MarkCommandValidationStatus.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MarkCommandValidationStatus.swift; sourceTree = "<group>"; };
+		84162A242038C1E000035290 /* TimelineDataSource.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineDataSource.swift; sourceTree = "<group>"; };
 		841ABA4D20145E7300980E11 /* NothingInspectorViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NothingInspectorViewController.swift; sourceTree = "<group>"; };
 		841ABA5D20145E9200980E11 /* FolderInspectorViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FolderInspectorViewController.swift; sourceTree = "<group>"; };
 		841ABA5F20145EC100980E11 /* BuiltinSmartFeedInspectorViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BuiltinSmartFeedInspectorViewController.swift; sourceTree = "<group>"; };
@@ -980,6 +982,7 @@
 			children = (
 				849A976B1ED9EBC8007D329B /* TimelineViewController.swift */,
 				84E8E0DA202EC49300562D8F /* TimelineViewController+ContextualMenus.swift */,
+				84162A242038C1E000035290 /* TimelineDataSource.swift */,
 				84F204DF1FAACBB30076E152 /* ArticleArray.swift */,
 				849A97691ED9EBC8007D329B /* TimelineTableRowView.swift */,
 				849A976A1ED9EBC8007D329B /* TimelineTableView.swift */,
@@ -1973,6 +1976,7 @@
 				84B99C9D1FAE83C600ECDEDB /* DeleteFromSidebarCommand.swift in Sources */,
 				849A97541ED9EAC0007D329B /* AddFeedWindowController.swift in Sources */,
 				849A976D1ED9EBC8007D329B /* TimelineTableView.swift in Sources */,
+				84162A252038C1E000035290 /* TimelineDataSource.swift in Sources */,
 				84D52E951FE588BB00D14F5B /* DetailStatusBarView.swift in Sources */,
 				D5E4CC64202C1AC1009B4FFC /* MainWindowController+Scriptability.swift in Sources */,
 				84B99C671FAE35E600ECDEDB /* FeedListTreeControllerDelegate.swift in Sources */,

Evergreen/Base.lproj/MainWindow.storyboard

@@ -569,7 +569,7 @@
                                                 </tableColumn>
                                             </tableColumns>
                                             <connections>
-                                                <outlet property="dataSource" destination="36G-bQ-b96" id="OpB-zC-ItJ"/>
+                                                <outlet property="dataSource" destination="7kA-tA-2n7" id="Tdx-DB-Zjs"/>
                                                 <outlet property="delegate" destination="36G-bQ-b96" id="s1m-42-GQ4"/>
                                                 <outlet property="keyboardDelegate" destination="ZOV-xh-WJE" id="HiG-Bz-vD0"/>
                                                 <outlet property="menu" destination="gb5-z4-YPr" id="pey-0u-ogu"/>
@@ -605,6 +605,7 @@
                     </view>
                     <connections>
                         <outlet property="contextualMenuDelegate" destination="iD1-KK-gFc" id="b0j-aW-e4B"/>
+                        <outlet property="dataSource" destination="7kA-tA-2n7" id="heZ-eT-SZ6"/>
                         <outlet property="tableView" destination="DRs-j8-R9a" id="2AG-SP-7n2"/>
                     </connections>
                 </viewController>
@@ -635,6 +636,7 @@
                         <outlet property="timelineViewController" destination="36G-bQ-b96" id="oE9-uV-TNi"/>
                     </connections>
                 </customObject>
+                <customObject id="7kA-tA-2n7" customClass="TimelineDataSource" customModule="Evergreen" customModuleProvider="target"/>
             </objects>
             <point key="canvasLocation" x="62" y="394"/>
         </scene>

Evergreen/MainWindow/Timeline/TimelineDataSource.swift

@@ -0,0 +1,32 @@
+//
+//  TimelineDataSource.swift
+//  Evergreen
+//
+//  Created by Brent Simmons on 2/17/18.
+//  Copyright © 2018 Ranchero Software. All rights reserved.
+//
+
+import AppKit
+
+@objc final class TimelineDataSource: NSObject, NSTableViewDataSource {
+
+	var articles = ArticleArray()
+	
+	func numberOfRows(in tableView: NSTableView) -> Int {
+
+		return articles.count
+	}
+
+	func tableView(_ tableView: NSTableView, objectValueFor tableColumn: NSTableColumn?, row: Int) -> Any? {
+
+		return articles.articleAtRow(row) ?? nil
+	}
+
+	func tableView(_ tableView: NSTableView, pasteboardWriterForRow row: Int) -> NSPasteboardWriting? {
+
+		guard let article = articles.articleAtRow(row) else {
+			return nil
+		}
+		return ArticlePasteboardWriter(article: article)
+	}
+}

Evergreen/MainWindow/Timeline/TimelineViewController.swift

@@ -16,6 +16,7 @@ class TimelineViewController: NSViewController, UndoableCommandRunner {
 
 	@IBOutlet var tableView: TimelineTableView!
 	@IBOutlet var contextualMenuDelegate: TimelineContextualMenuDelegate?
+	@IBOutlet var dataSource: TimelineDataSource!
 
 	var selectedArticles: [Article] {
 		return Array(articles.articlesForIndexes(tableView.selectedRowIndexes))
@@ -28,6 +29,7 @@ class TimelineViewController: NSViewController, UndoableCommandRunner {
 	var articles = ArticleArray() {
 		didSet {
 			if articles != oldValue {
+				dataSource.articles = articles
 				updateShowAvatars()
 				tableView.reloadData()
 			}
@@ -37,7 +39,6 @@ class TimelineViewController: NSViewController, UndoableCommandRunner {
 	var undoableCommands = [UndoableCommand]()
 	private var cellAppearance: TimelineCellAppearance!
 	private var cellAppearanceWithAvatar: TimelineCellAppearance!
-
 	private var showFeedNames = false {
 		didSet {
 			if showFeedNames != oldValue {