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// ItemExtensions.cs
//
// GNOME Do is the legal property of its developers. Please refer to the
// COPYRIGHT file distributed with this source distribution.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using Do.Universe;
namespace Do.Core
{
static class ItemExtensions
{
static readonly IRelevanceProvider provider = RelevanceProvider.DefaultProvider;
static IDictionary<Item, bool> has_children;
static ItemExtensions ()
{
has_children = new Dictionary<Item, bool> ();
}
public static bool HasChildren (this Item self)
{
if (!has_children.ContainsKey (self)) {
has_children[self] = self.GetChildren ().Any ()
||
PluginManager.ItemSources
.Any (source => source.Safe.ChildrenOfItem (self).Any ())
||
PluginManager.DynamicItemSources
.Any ((source) => source.ChildrenOfItem (self).Any());
}
return has_children [self];
}
public static bool IsAction (this Item self)
{
return ProxyItem.Unwrap (self) is Act;
}
public static Act AsAction (this Item self)
{
return ProxyItem.Unwrap (self) as Act;
}
/// <summary>
/// Increase the relevance of receiver for string match and other Item.
/// </summary>
/// <param name="self">
/// A <see cref="Item"/> whose relevance is to be increased.
/// </param>
/// <param name="match">
/// A <see cref="System.String"/> of user input for which the receiver should become more relevant.
/// </param>
/// <param name="other">
/// A <see cref="Item"/> (maybe null) context.
/// </param>
public static void IncreaseRelevance (this Item self, string match, Item other)
{
provider.IncreaseRelevance (self, match, other);
}
/// <summary>
/// Decrease the relevance of receiver for string match and other Item.
/// </summary>
/// <param name="self">
/// A <see cref="Item"/> whose relevance is to be increased.
/// </param>
/// <param name="match">
/// A <see cref="System.String"/> of user input for which the receiver should become less relevant.
/// </param>
/// <param name="other">
/// A <see cref="Item"/> (maybe null) context.
/// </param>
public static void DecreaseRelevance (this Item self, string match, Item other)
{
provider.DecreaseRelevance (self, match, other);
}
/// <summary>
/// Simply retrieves the receivers relevance and updates the receivers state
/// (Item.Relevance is set).
/// </summary>
/// <param name="self">
/// A <see cref="Item"/> whose relevance should be updated to reflect
/// the state of the world.
/// </param>
/// <param name="match">
/// A <see cref="System.String"/> to retrieve relevance info for.
/// </param>
/// <param name="other">
/// A <see cref="Item"/> (maybe null) to retrieve relevance info for.
/// </param>
public static float UpdateRelevance (this Item self, string match, Item other)
{
return self.Relevance = provider.GetRelevance (self, match, other);
}
}
}
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