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Begin support for clearing undo commands on sidebar selection change.

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This commit is contained in:
Brent Simmons 2017-10-29 11:28:45 -07:00
parent f9b3eeb4d7
commit 5f848f568a
1 changed files with 21 additions and 1 deletions
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20
Evergreen/MainWindow/Timeline/TimelineViewController.swift
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@ -16,6 +16,7 @@ import Account
class TimelineViewController: NSViewController, NSTableViewDelegate, NSTableViewDataSource, KeyboardDelegate {
@IBOutlet var tableView: TimelineTableView!
private var undoableCommands = [UndoableCommand]()
var didRegisterForNotifications = false
var fontSize: FontSize = AppDefaults.shared.timelineFontSize {
didSet {
@ -127,6 +128,25 @@ class TimelineViewController: NSViewController, NSTableViewDelegate, NSTableView
// MARK: - Actions
private func pushUndoableCommand(_ undoableCommand: UndoableCommand) {
undoableCommands += [undoableCommand]
}
private func clearUndoableCommands() {
// When the timeline is reloaded based on a different sidebar selection,
// undoable commands should be dropped — otherwise things like
// Redo Mark All as Read are ambiguous. (Do they apply to the previous articles
// or to the current articles?)
guard let undoManager = undoManager else {
return
}
undoableCommands.forEach { undoManager.removeAllActions(withTarget: $0) }
undoableCommands = [UndoableCommand]()
}
@objc func openArticleInBrowser(_ sender: AnyObject) {
if let link = oneSelectedArticle?.preferredLink {