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Made lazy sub-VM members, so only one is ever created

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This commit is contained in:
Justin Swanson 2019-11-02 17:21:05 -05:00
parent 8eaec1eabb
commit 5f629f4854
1 changed files with 10 additions and 3 deletions
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13
Wabbajack/View Models/MainWindowVM.cs
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@ -41,10 +41,15 @@ namespace Wabbajack
private RunMode _Mode;
public RunMode Mode { get => _Mode; set => this.RaiseAndSetIfChanged(ref _Mode, value); }
private readonly Lazy<CompilerVM> _Compiler;
private readonly Lazy<InstallerVM> _Installer;
public MainWindowVM(RunMode mode, string source, MainWindow mainWindow)
{
this.Mode = mode;
this.MainWindow = mainWindow;
this._Installer = new Lazy<InstallerVM>(() => new InstallerVM(this));
this._Compiler = new Lazy<CompilerVM>(() => new CompilerVM(this, source));
// Set up logging
_logSubj
@ -60,16 +65,18 @@ namespace Wabbajack
Utils.SetLoggerFn(s => _logSubj.OnNext(s));
Utils.SetStatusFn((msg, progress) => WorkQueue.Report(msg, progress));
// Wire mode to drive the active pane
// Wire mode to drive the active pane.
// Note: This is currently made into a derivative property driven by mode,
// but it can be easily changed into a normal property that can be set from anywhere if needed
this._ActivePane = this.WhenAny(x => x.Mode)
.Select<RunMode, ViewModel>(m =>
{
switch (m)
{
case RunMode.Compile:
return new CompilerVM(this, source);
return this._Compiler.Value;
case RunMode.Install:
return new InstallerVM(this);
return this._Installer.Value;
default:
return default;
}