[3437] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 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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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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| 25 | using System.Windows.Forms;
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| 26 | using HeuristicLab.MainForm;
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| 27 | using HeuristicLab.Common;
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| 28 |
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| 29 | namespace HeuristicLab.MainForm.WindowsForms {
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| 30 | [Content(typeof(object))]
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| 31 | public sealed partial class ViewHost : AsynchronousContentView {
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| 32 | public ViewHost() {
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| 33 | InitializeComponent();
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| 34 | cachedViews = new Dictionary<Type, IContentView>();
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| 35 | viewType = null;
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| 36 | startDragAndDrop = false;
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| 37 | viewContextMenuStrip.IgnoredViewTypes = new List<Type>() { typeof(ViewHost) };
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| 38 | activeView = null;
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[3497] | 39 | Content = null;
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| 40 | OnContentChanged();
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[3437] | 41 | }
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| 42 | public ViewHost(IContent content)
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| 43 | : this() {
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| 44 | this.Content = content;
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| 45 | }
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| 46 |
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| 47 | public ViewHost(IContentView contentView)
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| 48 | : this() {
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| 49 | this.viewType = contentView.GetType();
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| 50 | this.Content = contentView.Content;
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| 51 | this.cachedViews.Add(contentView.GetType(), contentView);
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| 52 | this.activeView = contentView;
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| 53 | this.RegisterActiveViewEvents();
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| 54 | this.OnViewTypeChanged();
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| 55 | this.ActiveViewChanged();
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| 56 | }
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| 57 |
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| 58 | private Dictionary<Type, IContentView> cachedViews;
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| 59 | public IEnumerable<IContentView> Views {
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| 60 | get { return cachedViews.Values; }
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| 61 | }
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| 62 |
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| 63 | private IContentView activeView;
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| 64 | public IContentView ActiveView {
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| 65 | get { return this.activeView; }
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| 66 | private set {
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| 67 | if (activeView != value) {
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| 68 | if (activeView != null) {
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| 69 | DeregisterActiveViewEvents();
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| 70 | View view = activeView as View;
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| 71 | if (view != null)
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| 72 | view.OnHidden(EventArgs.Empty);
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| 73 | }
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| 74 | activeView = value;
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| 75 | if (activeView != null) {
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| 76 | RegisterActiveViewEvents();
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| 77 | View view = activeView as View;
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| 78 | if (view != null)
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| 79 | view.OnShown(new ViewShownEventArgs(view, false));
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| 80 | }
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| 81 | ActiveViewChanged();
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| 82 | OnViewTypeChanged();
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| 83 | }
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| 84 | }
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| 85 | }
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| 86 | private Type viewType;
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| 87 | public Type ViewType {
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| 88 | get { return this.viewType; }
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| 89 | set {
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| 90 | if (viewType != value) {
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| 91 | if (value != null && !ViewCanShowContent(value, Content))
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| 92 | throw new ArgumentException(string.Format("View \"{0}\" cannot display content \"{1}\".",
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| 93 | value, Content.GetType()));
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| 94 | viewType = value;
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| 95 | OnViewTypeChanged();
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| 96 | }
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| 97 | }
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| 98 | }
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| 99 | public new IContent Content {
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| 100 | get { return base.Content; }
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| 101 | set {
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| 102 | if (value == null || this.Content == null || value.GetType() != this.Content.GetType())
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| 103 | cachedViews.Clear();
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[3466] | 104 |
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[3437] | 105 | base.Content = value;
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| 106 | }
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| 107 | }
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| 108 |
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| 109 | public new bool Enabled {
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| 110 | get { return base.Enabled; }
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| 111 | set {
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| 112 | this.SuspendRepaint();
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| 113 | base.Enabled = value;
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| 114 | this.viewsLabel.Enabled = value;
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| 115 | this.ResumeRepaint(true);
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| 116 | }
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| 117 | }
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| 118 |
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| 119 |
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| 120 |
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| 121 | protected override void OnContentChanged() {
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| 122 | messageLabel.Visible = false;
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| 123 | viewsLabel.Visible = false;
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| 124 | viewPanel.Visible = false;
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[3466] | 125 | viewContextMenuStrip.Item = Content;
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| 126 |
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[3437] | 127 | if (Content != null) {
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| 128 | if (viewContextMenuStrip.Items.Count == 0)
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| 129 | messageLabel.Visible = true;
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[3466] | 130 | else {
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[3437] | 131 | viewsLabel.Visible = true;
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[3471] | 132 | viewPanel.Visible = true;
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[3466] | 133 | }
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[3437] | 134 |
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[3497] | 135 |
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[3437] | 136 | if (!ViewCanShowContent(viewType, Content)) {
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| 137 | ViewType = MainFormManager.GetDefaultViewType(Content.GetType());
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| 138 | if ((viewType == null) && (viewContextMenuStrip.Items.Count > 0)) // create first available view if default view is not available
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| 139 | ViewType = (Type)viewContextMenuStrip.Items[0].Tag;
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| 140 | }
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[3471] | 141 | UpdateActiveMenuItem();
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[3437] | 142 | foreach (IContentView view in cachedViews.Values)
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| 143 | view.Content = this.Content;
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| 144 | } else {
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| 145 | if (viewPanel.Controls.Count > 0) viewPanel.Controls[0].Dispose();
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| 146 | viewPanel.Controls.Clear();
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| 147 | cachedViews.Clear();
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| 148 | }
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| 149 | }
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| 150 |
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| 151 |
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| 152 | private void OnViewTypeChanged() {
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| 153 | viewPanel.Controls.Clear();
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| 154 | if (viewType == null || Content == null)
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| 155 | return;
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| 156 | if (!ViewCanShowContent(viewType, Content))
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| 157 | throw new InvalidOperationException(string.Format("View \"{0}\" cannot display content \"{1}\".",
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| 158 | viewType, Content.GetType()));
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| 159 |
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| 160 | UpdateActiveMenuItem();
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| 161 | IContentView view;
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| 162 | if (cachedViews.ContainsKey(ViewType))
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| 163 | view = cachedViews[ViewType];
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| 164 | else {
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[3552] | 165 | view = MainFormManager.CreateView(viewType);
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[3437] | 166 | view.ReadOnly = this.ReadOnly;
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| 167 | view.Locked = this.Locked;
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| 168 | cachedViews.Add(viewType, view);
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| 169 | }
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| 170 | this.ActiveView = view;
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| 171 | Control control = (Control)view;
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| 172 | control.Dock = DockStyle.Fill;
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| 173 | viewPanel.Controls.Add(control);
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| 174 | viewPanel.Visible = true;
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[3552] | 175 | view.Content = Content;
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[3437] | 176 | }
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| 177 |
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| 178 |
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| 179 |
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| 180 | private void RegisterActiveViewEvents() {
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| 181 | activeView.Changed += new EventHandler(activeView_Changed);
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| 182 | activeView.CaptionChanged += new EventHandler(activeView_CaptionChanged);
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| 183 | }
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| 184 | private void DeregisterActiveViewEvents() {
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| 185 | activeView.Changed -= new EventHandler(activeView_Changed);
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| 186 | activeView.CaptionChanged -= new EventHandler(activeView_CaptionChanged);
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| 187 | }
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| 188 | private void activeView_CaptionChanged(object sender, EventArgs e) {
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| 189 | this.ActiveViewChanged();
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| 190 | }
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| 191 | private void activeView_Changed(object sender, EventArgs e) {
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| 192 | this.ActiveViewChanged();
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| 193 | }
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| 194 | private void ActiveViewChanged() {
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| 195 | if (ActiveView != null) {
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| 196 | this.Caption = this.ActiveView.Caption;
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| 197 | this.Locked = this.ActiveView.Locked;
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| 198 | }
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| 199 | }
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| 200 |
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| 201 | #region forwarding of view events
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| 202 | protected override void OnReadOnlyChanged() {
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| 203 | base.OnReadOnlyChanged();
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| 204 | foreach (IContentView view in cachedViews.Values)
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| 205 | view.ReadOnly = this.ReadOnly;
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| 206 | }
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| 207 | protected override void OnLockedChanged() {
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| 208 | base.OnLockedChanged();
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| 209 | foreach (IContentView view in cachedViews.Values)
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| 210 | view.Locked = this.Locked;
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| 211 | }
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| 212 | internal protected override void OnShown(ViewShownEventArgs e) {
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| 213 | base.OnShown(e);
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| 214 | View view = this.ActiveView as View;
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| 215 | if (view != null)
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| 216 | view.OnShown(e);
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| 217 | }
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| 218 | internal protected override void OnHidden(EventArgs e) {
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| 219 | base.OnHidden(e);
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| 220 | View view = this.ActiveView as View;
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| 221 | if (view != null)
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| 222 | view.OnHidden(e);
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| 223 | }
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| 224 | internal protected override void OnClosing(FormClosingEventArgs e) {
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| 225 | base.OnClosing(e);
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| 226 | foreach (View view in this.Views.OfType<View>())
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| 227 | view.OnClosing(e);
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| 228 | }
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| 229 | internal protected override void OnClosed(FormClosedEventArgs e) {
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| 230 | base.OnClosed(e);
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| 231 | foreach (View view in this.Views.OfType<View>())
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| 232 | view.OnClosed(e);
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| 233 | }
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| 234 | #endregion
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| 235 |
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| 236 | #region GUI actions
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| 237 | private void UpdateActiveMenuItem() {
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| 238 | foreach (KeyValuePair<Type, ToolStripMenuItem> item in viewContextMenuStrip.MenuItems) {
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| 239 | if (item.Key == viewType) {
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| 240 | item.Value.Checked = true;
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| 241 | item.Value.Enabled = false;
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| 242 | } else {
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| 243 | item.Value.Checked = false;
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| 244 | item.Value.Enabled = true;
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| 245 | }
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| 246 | }
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| 247 | }
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| 248 |
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| 249 | private bool ViewCanShowContent(Type viewType, object content) {
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| 250 | if (content == null) // every view can display null
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| 251 | return true;
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| 252 | if (viewType == null)
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| 253 | return false;
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| 254 | return ContentAttribute.CanViewType(viewType, Content.GetType()) && viewContextMenuStrip.MenuItems.Any(item => item.Key == viewType);
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| 255 | }
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| 256 |
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| 257 | private void viewsLabel_DoubleClick(object sender, EventArgs e) {
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| 258 | IContentView view = MainFormManager.CreateView(viewType, Content);
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| 259 | view.ReadOnly = this.ReadOnly;
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| 260 | view.Locked = this.Locked;
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| 261 | view.Show();
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| 262 | }
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| 263 | private void viewContextMenuStrip_ItemClicked(object sender, ToolStripItemClickedEventArgs e) {
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| 264 | Type viewType = (Type)e.ClickedItem.Tag;
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| 265 | ViewType = viewType;
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| 266 | }
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| 267 |
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| 268 | private bool startDragAndDrop;
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| 269 | private void viewsLabel_MouseDown(object sender, MouseEventArgs e) {
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| 270 | if (!Locked) {
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| 271 | startDragAndDrop = true;
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| 272 | viewsLabel.Capture = false;
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[3497] | 273 | viewsLabel.Focus();
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[3437] | 274 | }
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| 275 | }
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| 276 | private void viewsLabel_MouseLeave(object sender, EventArgs e) {
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| 277 | if ((Control.MouseButtons & MouseButtons.Left) == MouseButtons.Left && startDragAndDrop) {
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| 278 | DataObject data = new DataObject();
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| 279 | data.SetData("Type", Content.GetType());
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| 280 | data.SetData("Value", Content);
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| 281 | DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link);
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| 282 | } else
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| 283 | startDragAndDrop = false;
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| 284 | }
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| 285 | #endregion
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| 286 | }
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| 287 | }
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