[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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[3557] | 30 | [Content(typeof(IContent))]
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[3437] | 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 |
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[3655] | 43 | private bool viewShown;
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[3437] | 44 | private Dictionary<Type, IContentView> cachedViews;
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| 45 | public IEnumerable<IContentView> Views {
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| 46 | get { return cachedViews.Values; }
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| 47 | }
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| 48 |
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| 49 | private IContentView activeView;
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| 50 | public IContentView ActiveView {
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| 51 | get { return this.activeView; }
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| 52 | private set {
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| 53 | if (activeView != value) {
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| 54 | if (activeView != null) {
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| 55 | DeregisterActiveViewEvents();
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| 56 | View view = activeView as View;
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| 57 | if (view != null)
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| 58 | view.OnHidden(EventArgs.Empty);
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| 59 | }
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| 60 | activeView = value;
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| 61 | if (activeView != null) {
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[3805] | 62 | ViewType = activeView.GetType();
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[3437] | 63 | RegisterActiveViewEvents();
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| 64 | View view = activeView as View;
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| 65 | if (view != null)
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| 66 | view.OnShown(new ViewShownEventArgs(view, false));
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| 67 | }
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| 68 | ActiveViewChanged();
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| 69 | }
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| 70 | }
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| 71 | }
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| 72 | private Type viewType;
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| 73 | public Type ViewType {
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| 74 | get { return this.viewType; }
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| 75 | set {
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| 76 | if (viewType != value) {
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| 77 | if (value != null && !ViewCanShowContent(value, Content))
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| 78 | throw new ArgumentException(string.Format("View \"{0}\" cannot display content \"{1}\".",
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| 79 | value, Content.GetType()));
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| 80 | viewType = value;
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| 81 | OnViewTypeChanged();
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| 82 | }
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| 83 | }
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| 84 | }
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[3466] | 85 |
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[3437] | 86 | public new bool Enabled {
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| 87 | get { return base.Enabled; }
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| 88 | set {
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| 89 | this.SuspendRepaint();
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| 90 | base.Enabled = value;
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| 91 | this.viewsLabel.Enabled = value;
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| 92 | this.ResumeRepaint(true);
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| 93 | }
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| 94 | }
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| 95 |
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| 96 | protected override void OnContentChanged() {
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[3466] | 97 | viewContextMenuStrip.Item = Content;
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[3572] | 98 |
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[3437] | 99 | if (Content != null) {
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[3664] | 100 | if (viewContextMenuStrip.Items.Count == 0) {
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[3437] | 101 | messageLabel.Visible = true;
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[3664] | 102 | viewsLabel.Visible = false;
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| 103 | viewPanel.Visible = false;
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| 104 | } else {
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| 105 | messageLabel.Visible = false;
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[3437] | 106 | viewsLabel.Visible = true;
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[3471] | 107 | viewPanel.Visible = true;
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[3466] | 108 | }
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[3437] | 109 |
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[3730] | 110 | Type defaultViewType = MainFormManager.GetDefaultViewType(Content.GetType());
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[3805] | 111 | if (ViewType == null || !ViewCanShowContent(viewType, Content)) {
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[3709] | 112 | cachedViews.Clear();
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[3795] | 113 | if (defaultViewType == null) {
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| 114 | if (viewContextMenuStrip.Items.Count > 0) // create first available view if default view is not available
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| 115 | ViewType = (Type)viewContextMenuStrip.Items[0].Tag;
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| 116 | } else if (defaultViewType != this.ViewType)
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| 117 | ViewType = defaultViewType;
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[3437] | 118 | }
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[3471] | 119 | UpdateActiveMenuItem();
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[3437] | 120 | foreach (IContentView view in cachedViews.Values)
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| 121 | view.Content = this.Content;
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| 122 | } else {
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[3664] | 123 | messageLabel.Visible = false;
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| 124 | viewsLabel.Visible = false;
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| 125 | viewPanel.Visible = false;
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[3437] | 126 | }
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| 127 | }
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| 128 |
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| 129 | private void OnViewTypeChanged() {
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| 130 | viewPanel.Controls.Clear();
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| 131 | if (viewType == null || Content == null)
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| 132 | return;
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| 133 | if (!ViewCanShowContent(viewType, Content))
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| 134 | throw new InvalidOperationException(string.Format("View \"{0}\" cannot display content \"{1}\".",
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| 135 | viewType, Content.GetType()));
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[3655] | 136 | if (viewPanel.Height <= 10 || viewPanel.Width <= 10) {
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| 137 | viewShown = false;
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[3646] | 138 | return;
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[3655] | 139 | }
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[3437] | 140 |
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[3655] | 141 | viewShown = true;
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[3437] | 142 | UpdateActiveMenuItem();
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| 143 | IContentView view;
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| 144 | if (cachedViews.ContainsKey(ViewType))
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| 145 | view = cachedViews[ViewType];
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| 146 | else {
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[3552] | 147 | view = MainFormManager.CreateView(viewType);
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[3437] | 148 | view.ReadOnly = this.ReadOnly;
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| 149 | view.Locked = this.Locked;
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| 150 | cachedViews.Add(viewType, view);
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| 151 | }
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| 152 | this.ActiveView = view;
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| 153 | Control control = (Control)view;
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| 154 | control.Dock = DockStyle.Fill;
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| 155 | viewPanel.Controls.Add(control);
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| 156 | viewPanel.Visible = true;
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[3552] | 157 | view.Content = Content;
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[3437] | 158 | }
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| 159 |
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[3655] | 160 | private void viewPanel_Resize(object sender, EventArgs e) {
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| 161 | if (!viewShown)
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| 162 | this.OnViewTypeChanged();
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| 163 | }
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| 164 |
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[3437] | 165 | private void RegisterActiveViewEvents() {
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| 166 | activeView.Changed += new EventHandler(activeView_Changed);
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| 167 | activeView.CaptionChanged += new EventHandler(activeView_CaptionChanged);
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| 168 | }
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| 169 | private void DeregisterActiveViewEvents() {
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| 170 | activeView.Changed -= new EventHandler(activeView_Changed);
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| 171 | activeView.CaptionChanged -= new EventHandler(activeView_CaptionChanged);
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| 172 | }
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| 173 | private void activeView_CaptionChanged(object sender, EventArgs e) {
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| 174 | this.ActiveViewChanged();
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| 175 | }
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| 176 | private void activeView_Changed(object sender, EventArgs e) {
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| 177 | this.ActiveViewChanged();
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| 178 | }
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| 179 | private void ActiveViewChanged() {
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| 180 | if (ActiveView != null) {
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| 181 | this.Caption = this.ActiveView.Caption;
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| 182 | this.Locked = this.ActiveView.Locked;
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| 183 | }
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| 184 | }
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| 185 | #region forwarding of view events
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| 186 | protected override void OnReadOnlyChanged() {
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[3720] | 187 | this.SuspendRepaint();
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[3437] | 188 | base.OnReadOnlyChanged();
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| 189 | foreach (IContentView view in cachedViews.Values)
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| 190 | view.ReadOnly = this.ReadOnly;
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[3720] | 191 | this.ResumeRepaint(true);
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[3437] | 192 | }
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| 193 | protected override void OnLockedChanged() {
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[3720] | 194 | this.SuspendRepaint();
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[3437] | 195 | base.OnLockedChanged();
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| 196 | foreach (IContentView view in cachedViews.Values)
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| 197 | view.Locked = this.Locked;
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[3720] | 198 | this.ResumeRepaint(true);
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[3437] | 199 | }
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| 200 | internal protected override void OnShown(ViewShownEventArgs e) {
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| 201 | base.OnShown(e);
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| 202 | View view = this.ActiveView as View;
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| 203 | if (view != null)
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| 204 | view.OnShown(e);
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| 205 | }
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| 206 | internal protected override void OnHidden(EventArgs e) {
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| 207 | base.OnHidden(e);
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| 208 | View view = this.ActiveView as View;
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| 209 | if (view != null)
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| 210 | view.OnHidden(e);
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| 211 | }
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| 212 | internal protected override void OnClosing(FormClosingEventArgs e) {
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| 213 | base.OnClosing(e);
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| 214 | foreach (View view in this.Views.OfType<View>())
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| 215 | view.OnClosing(e);
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| 216 | }
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| 217 | internal protected override void OnClosed(FormClosedEventArgs e) {
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| 218 | base.OnClosed(e);
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| 219 | foreach (View view in this.Views.OfType<View>())
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| 220 | view.OnClosed(e);
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| 221 | }
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| 222 | #endregion
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| 223 |
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| 224 | #region GUI actions
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| 225 | private void UpdateActiveMenuItem() {
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| 226 | foreach (KeyValuePair<Type, ToolStripMenuItem> item in viewContextMenuStrip.MenuItems) {
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| 227 | if (item.Key == viewType) {
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| 228 | item.Value.Checked = true;
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| 229 | item.Value.Enabled = false;
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| 230 | } else {
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| 231 | item.Value.Checked = false;
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| 232 | item.Value.Enabled = true;
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| 233 | }
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| 234 | }
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| 235 | }
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| 236 |
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| 237 | private bool ViewCanShowContent(Type viewType, object content) {
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| 238 | if (content == null) // every view can display null
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| 239 | return true;
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| 240 | if (viewType == null)
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| 241 | return false;
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| 242 | return ContentAttribute.CanViewType(viewType, Content.GetType()) && viewContextMenuStrip.MenuItems.Any(item => item.Key == viewType);
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| 243 | }
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| 244 |
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| 245 | private void viewsLabel_DoubleClick(object sender, EventArgs e) {
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[3796] | 246 | IContentView view = MainFormManager.MainForm.ShowContent(this.Content, this.ViewType);
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[3670] | 247 | if (view != null) {
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| 248 | view.ReadOnly = this.ReadOnly;
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| 249 | view.Locked = this.Locked;
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| 250 | }
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[3437] | 251 | }
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| 252 | private void viewContextMenuStrip_ItemClicked(object sender, ToolStripItemClickedEventArgs e) {
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| 253 | Type viewType = (Type)e.ClickedItem.Tag;
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| 254 | ViewType = viewType;
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| 255 | }
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| 256 |
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| 257 | private bool startDragAndDrop;
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| 258 | private void viewsLabel_MouseDown(object sender, MouseEventArgs e) {
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| 259 | if (!Locked) {
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| 260 | startDragAndDrop = true;
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| 261 | viewsLabel.Capture = false;
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[3497] | 262 | viewsLabel.Focus();
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[3437] | 263 | }
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| 264 | }
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| 265 | private void viewsLabel_MouseLeave(object sender, EventArgs e) {
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| 266 | if ((Control.MouseButtons & MouseButtons.Left) == MouseButtons.Left && startDragAndDrop) {
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| 267 | DataObject data = new DataObject();
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| 268 | data.SetData("Type", Content.GetType());
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| 269 | data.SetData("Value", Content);
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| 270 | DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link);
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| 271 | } else
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| 272 | startDragAndDrop = false;
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| 273 | }
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| 274 | #endregion
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| 275 | }
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| 276 | }
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