[3090] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[11594] | 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3090] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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[4722] | 21 | using System;
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[3068] | 22 | using System.Collections.Generic;
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| 23 | using System.Linq;
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| 24 | using System.Windows.Forms;
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| 25 |
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| 26 | namespace HeuristicLab.PluginInfrastructure.Advanced {
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| 27 | internal partial class MultiSelectListView : ListView {
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| 28 | public MultiSelectListView() {
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| 29 | InitializeComponent();
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| 30 | }
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| 31 |
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| 32 | private bool inhibitAutoCheck;
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| 33 | protected override void OnMouseDown(MouseEventArgs e) {
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| 34 | inhibitAutoCheck = true;
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| 35 | base.OnMouseDown(e);
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| 36 | }
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| 37 |
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| 38 | protected override void OnMouseUp(MouseEventArgs e) {
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| 39 | base.OnMouseUp(e);
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| 40 | inhibitAutoCheck = false;
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| 41 | }
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| 42 |
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| 43 | // item check is raised for each selected item that was not directly clicked (those should be ignored)
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| 44 | // and then one the item whose checkbox was clicked
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| 45 | protected override void OnItemCheck(ItemCheckEventArgs ice) {
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[4482] | 46 | if (ice == null) throw new ArgumentNullException("ice");
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[3068] | 47 | // don't change the checked state of items that were not clicked directly
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| 48 | if (inhibitAutoCheck) {
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| 49 | ice.NewValue = ice.CurrentValue;
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| 50 | }
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| 51 | // if this item was directly clicked then check if it is selected as well
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| 52 | var item = Items[ice.Index];
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| 53 | if (!item.Selected) {
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| 54 | // when the item was not selected previously
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| 55 | // clear any selection
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| 56 | List<ListViewItem> selectedItems = new List<ListViewItem>(SelectedItems.OfType<ListViewItem>());
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| 57 | selectedItems.ForEach(x => x.Selected = false);
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| 58 | // select only the clicked item
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| 59 | item.Selected = true;
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| 60 | }
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| 61 | base.OnItemCheck(ice);
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| 62 | }
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| 63 |
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| 64 | private bool suppressItemCheckedEvents;
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| 65 | public bool SuppressItemCheckedEvents {
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| 66 | get {
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| 67 | return suppressItemCheckedEvents;
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| 68 | }
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| 69 | set {
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| 70 | suppressItemCheckedEvents = value;
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| 71 | }
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| 72 | }
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| 73 | protected override void OnItemChecked(ItemCheckedEventArgs e) {
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| 74 | if (!suppressItemCheckedEvents)
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| 75 | base.OnItemChecked(e);
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| 76 | }
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| 77 |
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| 78 | public void CheckItems(IEnumerable<ListViewItem> items) {
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| 79 | suppressItemCheckedEvents = true;
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| 80 |
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| 81 | foreach (var item in items)
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| 82 | item.Checked = true;
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| 83 | suppressItemCheckedEvents = false;
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| 84 | }
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| 85 |
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| 86 | public void UncheckItems(IEnumerable<ListViewItem> items) {
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| 87 | suppressItemCheckedEvents = true;
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| 88 |
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| 89 | foreach (var item in items)
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| 90 | item.Checked = false;
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| 91 | suppressItemCheckedEvents = false;
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| 92 | }
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| 93 |
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| 94 | }
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| 95 | }
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