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//
// AbstractGroupingProvider.cs
//
// Author:
// Simon Lindgren <simon.n.lindgren@gmail.com>
//
// Copyright (c) 2013 Simon Lindgren
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Collections.Generic;
namespace MonoDevelop.CodeIssues
{
public abstract class AbstractGroupingProvider<T>: IGroupingProvider
{
/// <summary>
/// Associates a parent group and grouping key to a child group.
/// </summary>
readonly Dictionary<Tuple<IssueGroup, T>, IssueGroup> groups = new Dictionary<Tuple<IssueGroup, T>, IssueGroup> ();
protected AbstractGroupingProvider()
{
Next = NullGroupingProvider.Instance;
}
#region IGroupingProvider implementation
protected abstract T GetGroupingKey (IssueSummary issue);
protected abstract string GetGroupName (IssueSummary issue);
public IssueGroup GetIssueGroup (IssueGroup parentGroup, IssueSummary issue)
{
IssueGroup group;
var providerCategory = GetGroupingKey (issue);
if (providerCategory == null)
return null;
var key = Tuple.Create (parentGroup, providerCategory);
if (!groups.TryGetValue (key, out group)) {
group = new IssueGroup (Next, GetGroupName(issue));
groups.Add (key, group);
}
return group;
}
public void Reset ()
{
groups.Clear ();
Next.Reset ();
}
IGroupingProvider next;
public IGroupingProvider Next
{
get {
return next;
}
set {
var eventArgs = new GroupingProviderEventArgs (this, next);
next = value;
foreach (var group in groups.Values) {
group.GroupingProvider = value;
}
OnNextChanged (eventArgs);
}
}
protected virtual void OnNextChanged (GroupingProviderEventArgs eventArgs)
{
var handler = nextChanged;
if (handler != null) {
handler (this, eventArgs);
}
}
event EventHandler<GroupingProviderEventArgs> nextChanged;
event EventHandler<GroupingProviderEventArgs> IGroupingProvider.NextChanged
{
add {
nextChanged += value;
}
remove {
nextChanged -= value;
}
}
public bool SupportsNext
{
get {
return true;
}
}
#endregion
}
}
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