/
AddComponentCommand.cs
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/
AddComponentCommand.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using Rubberduck.Navigation.CodeExplorer;
using Rubberduck.VBEditor.ComManagement;
using Rubberduck.VBEditor.Events;
using Rubberduck.VBEditor.SafeComWrappers;
namespace Rubberduck.UI.CodeExplorer.Commands
{
public abstract class AddComponentCommandBase : CodeExplorerCommandBase
{
private static readonly Type[] ApplicableNodes =
{
typeof(CodeExplorerProjectViewModel),
typeof(CodeExplorerCustomFolderViewModel),
typeof(CodeExplorerComponentViewModel),
typeof(CodeExplorerMemberViewModel)
};
private readonly ICodeExplorerAddComponentService _addComponentService;
private readonly IProjectsProvider _projectsProvider;
protected AddComponentCommandBase(
ICodeExplorerAddComponentService addComponentService,
IVbeEvents vbeEvents,
IProjectsProvider projectsProvider)
: base(vbeEvents)
{
_addComponentService = addComponentService;
_projectsProvider = projectsProvider;
AddToCanExecuteEvaluation(EvaluateCanExecuteBase);
}
public sealed override IEnumerable<Type> ApplicableNodeTypes => ApplicableNodes;
public abstract IEnumerable<ProjectType> AllowableProjectTypes { get; }
public abstract ComponentType ComponentType { get; }
protected override void OnExecute(object parameter)
{
AddComponent(parameter as CodeExplorerItemViewModel);
}
private bool EvaluateCanExecuteBase(object parameter)
{
if (!(parameter is CodeExplorerItemViewModel node)
|| node.Declaration == null)
{
return false;
}
try
{
var project = _projectsProvider.Project(node.Declaration.ProjectId);
return project != null
&& AllowableProjectTypes.Contains(project.Type);
}
catch (COMException)
{
return false;
}
}
private void AddComponent(CodeExplorerItemViewModel node)
{
_addComponentService.AddComponent(node, ComponentType);
}
}
}