[3595] | 1 | #region License Information
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[3558] | 2 | /* HeuristicLab
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[17181] | 3 | * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3558] | 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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| 21 |
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[9026] | 22 | using System;
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[9857] | 23 | using System.Collections.Generic;
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[6233] | 24 | using System.Drawing;
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[9026] | 25 | using System.Linq;
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[3558] | 26 | using System.Windows.Forms;
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| 27 | using HeuristicLab.Collections;
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| 28 | using HeuristicLab.MainForm;
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| 29 |
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| 30 | namespace HeuristicLab.Core.Views {
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| 31 | [View("CheckedItemCollection View")]
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[3628] | 32 | [Content(typeof(ICheckedItemCollection<>), true)]
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[3558] | 33 | [Content(typeof(CheckedItemCollection<>), true)]
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[12734] | 34 | [Content(typeof(ReadOnlyCheckedItemCollection<>), true)]
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[3595] | 35 | public partial class CheckedItemCollectionView<T> : ItemCollectionView<T> where T : class, IItem {
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[17147] | 36 | private bool suppressCheckedEvents;
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| 37 |
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[3558] | 38 | public new ICheckedItemCollection<T> Content {
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| 39 | get { return (ICheckedItemCollection<T>)base.Content; }
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| 40 | set { base.Content = value; }
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| 41 | }
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[4068] | 42 |
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[3595] | 43 | public CheckedItemCollectionView()
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| 44 | : base() {
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| 45 | InitializeComponent();
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[3558] | 46 | }
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| 47 |
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[9026] | 48 | protected override void OnContentChanged() {
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| 49 | base.OnContentChanged();
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| 50 | if (Content != null) {
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| 51 | SetNumberOfCheckItems();
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| 52 | }
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| 53 | }
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| 54 |
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[3595] | 55 | protected override void RegisterContentEvents() {
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| 56 | Content.CheckedItemsChanged += new HeuristicLab.Collections.CollectionItemsChangedEventHandler<T>(Content_CheckedItemsChanged);
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| 57 | base.RegisterContentEvents();
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[3558] | 58 | }
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| 59 |
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| 60 | protected override void DeregisterContentEvents() {
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[3595] | 61 | Content.CheckedItemsChanged -= new HeuristicLab.Collections.CollectionItemsChangedEventHandler<T>(Content_CheckedItemsChanged);
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[3558] | 62 | base.DeregisterContentEvents();
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| 63 | }
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| 64 |
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[6233] | 65 | private Color backupColor = Color.Empty;
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[3904] | 66 | protected override void SetEnabledStateOfControls() {
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[6233] | 67 | if (backupColor == Color.Empty) backupColor = base.itemsListView.BackColor;
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[3904] | 68 | base.SetEnabledStateOfControls();
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[6233] | 69 | if (ReadOnly || Locked)
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| 70 | base.itemsListView.BackColor = ListView.DefaultBackColor;
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| 71 | else
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| 72 | base.itemsListView.BackColor = backupColor;
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[3558] | 73 | }
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| 74 |
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[3595] | 75 | protected override ListViewItem CreateListViewItem(T item) {
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| 76 | ListViewItem listViewItem = base.CreateListViewItem(item);
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[3564] | 77 | listViewItem.Checked = Content.ItemChecked(item);
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[3558] | 78 | return listViewItem;
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| 79 | }
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| 80 |
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| 81 | #region ListView Events
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[3788] | 82 | private bool doubleClick;
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[3738] | 83 | protected virtual void itemsListView_ItemCheck(object sender, ItemCheckEventArgs e) {
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[3788] | 84 | if (doubleClick) {
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| 85 | e.NewValue = e.CurrentValue;
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| 86 | } else {
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[17147] | 87 | bool check = e.NewValue == CheckState.Checked;
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[3788] | 88 | var checkedItem = (T)itemsListView.Items[e.Index].Tag;
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[17147] | 89 | if (Content.ItemChecked(checkedItem) == check) return;
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| 90 |
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| 91 | suppressCheckedEvents = true;
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| 92 | try {
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| 93 | if (itemsListView.SelectedIndices.Count > 1
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| 94 | && itemsListView.SelectedIndices.Contains(e.Index)) {
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| 95 | if (!ReadOnly && !Locked) Content.SetItemCheckedState(itemsListView.SelectedItems.Cast<ListViewItem>().Select(x => (T)x.Tag), check);
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| 96 | else e.NewValue = e.CurrentValue;
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| 97 | } else {
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| 98 | if (!ReadOnly && !Locked) Content.SetItemCheckedState(checkedItem, check);
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| 99 | else e.NewValue = e.CurrentValue;
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| 100 | }
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| 101 | } finally { suppressCheckedEvents = false; }
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[3564] | 102 | }
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[3558] | 103 | }
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[17147] | 104 | protected void itemsListView_MouseDown(object sender, MouseEventArgs e) {
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| 105 | doubleClick = e.Clicks > 1;
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[3788] | 106 | }
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[3558] | 107 | #endregion
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| 108 |
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| 109 | #region Content Events
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[9857] | 110 | protected virtual void Content_CheckedItemsChanged(object sender, CollectionItemsChangedEventArgs<T> e) {
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[3558] | 111 | if (InvokeRequired)
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[3595] | 112 | Invoke(new CollectionItemsChangedEventHandler<T>(Content_CheckedItemsChanged), sender, e);
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[3558] | 113 | else {
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[17147] | 114 | if (!suppressCheckedEvents) UpdateCheckedItemState(e.Items);
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[9026] | 115 | SetNumberOfCheckItems();
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[3558] | 116 | }
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[4068] | 117 | }
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[9134] | 118 | protected override void Content_CollectionReset(object sender, CollectionItemsChangedEventArgs<T> e) {
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| 119 | base.Content_CollectionReset(sender, e);
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| 120 | SetNumberOfCheckItems();
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| 121 | }
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| 122 | protected override void Content_ItemsAdded(object sender, CollectionItemsChangedEventArgs<T> e) {
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| 123 | base.Content_ItemsAdded(sender, e);
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| 124 | SetNumberOfCheckItems();
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| 125 | }
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| 126 | protected override void Content_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<T> e) {
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| 127 | base.Content_ItemsRemoved(sender, e);
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| 128 | SetNumberOfCheckItems();
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| 129 | }
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[3558] | 130 | #endregion
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[9026] | 131 |
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| 132 | private void SetNumberOfCheckItems() {
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[9134] | 133 | if (InvokeRequired) {
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| 134 | Invoke((Action)SetNumberOfCheckItems);
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| 135 | } else {
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| 136 | this.itemsGroupBox.Text = String.Format("Items (Checked: {0}/{1})", Content.CheckedItems.Count(), Content.Count);
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| 137 | }
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[9026] | 138 | }
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[9857] | 139 |
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| 140 | private void UpdateCheckedItemState(IEnumerable<T> items) {
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[17147] | 141 | itemsListView.BeginUpdate();
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| 142 | try {
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| 143 | foreach (T item in items) {
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| 144 | foreach (ListViewItem listViewItem in GetListViewItemsForItem(item)) {
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| 145 | var isChecked = Content.ItemChecked(item);
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| 146 | if (listViewItem.Checked != isChecked)
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| 147 | listViewItem.Checked = isChecked;
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| 148 | }
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[9857] | 149 | }
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[17147] | 150 | } finally { itemsListView.EndUpdate(); itemsListView.Refresh(); }
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[9857] | 151 | }
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[3558] | 152 | }
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| 153 | }
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