92 lines
2.5 KiB
C#
92 lines
2.5 KiB
C#
//
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// EditorSelection.cs
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//
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// Author:
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// Mike Becker <alcexhim@gmail.com>
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//
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// Copyright (c) 2019 Mike Becker
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using System;
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using System.Collections.Generic;
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namespace UniversalEditor
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{
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public abstract class Selection
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{
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public class SelectionCollection
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: System.Collections.ObjectModel.ObservableCollection<Selection>
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{
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}
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public abstract object Content { get; set; }
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protected abstract void DeleteInternal();
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/// <summary>
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/// Removes the selected content represented by this <see cref="Selection" /> from the <see cref="ObjectModel" />.
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/// </summary>
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public void Delete()
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{
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DeleteInternal();
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Content = null;
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}
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}
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public abstract class Selection<TObjectModel, TSelection> : Selection where TObjectModel : ObjectModel
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{
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public override object Content
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{
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get
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{
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if (SelectedItems.Count == 0)
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return null;
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if (SelectedItems.Count == 1)
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return SelectedItems[0];
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return SelectedItems.ToArray();
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}
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set
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{
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if (value == null)
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{
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SelectedItems.Clear();
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}
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else if (value is TSelection)
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{
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SelectedItems.Clear();
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SelectedItems.Add((TSelection)value);
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}
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else if (value is TSelection[])
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{
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SelectedItems = new List<TSelection>((TSelection[])value);
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}
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}
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}
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public TObjectModel ObjectModel { get; private set; } = default(TObjectModel);
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public TSelection SelectedItem { get { return SelectedItems[0]; } set { SelectedItems.Clear(); SelectedItems.Add(value); } }
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public List<TSelection> SelectedItems { get; private set; } = new List<TSelection>();
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protected Selection(TObjectModel objectModel, TSelection selectedItem)
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{
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ObjectModel = objectModel;
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SelectedItem = selectedItem;
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}
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protected Selection(TObjectModel objectModel, TSelection[] selectedItems)
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{
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ObjectModel = objectModel;
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SelectedItems = new List<TSelection>(selectedItems);
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}
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}
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}
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