moel@111: /*
moel@111:
moel@111: Version: MPL 1.1/GPL 2.0/LGPL 2.1
moel@111:
moel@111: The contents of this file are subject to the Mozilla Public License Version
moel@111: 1.1 (the "License"); you may not use this file except in compliance with
moel@111: the License. You may obtain a copy of the License at
moel@111:
moel@111: http://www.mozilla.org/MPL/
moel@111:
moel@111: Software distributed under the License is distributed on an "AS IS" basis,
moel@111: WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
moel@111: for the specific language governing rights and limitations under the License.
moel@111:
moel@111: The Original Code is the Open Hardware Monitor code.
moel@111:
moel@111: The Initial Developer of the Original Code is
moel@111: Michael Möller <m.moeller@gmx.ch>.
moel@111: Portions created by the Initial Developer are Copyright (C) 2009-2010
moel@111: the Initial Developer. All Rights Reserved.
moel@111:
moel@111: Contributor(s):
moel@111:
moel@111: Alternatively, the contents of this file may be used under the terms of
moel@111: either the GNU General Public License Version 2 or later (the "GPL"), or
moel@111: the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
moel@111: in which case the provisions of the GPL or the LGPL are applicable instead
moel@111: of those above. If you wish to allow use of your version of this file only
moel@111: under the terms of either the GPL or the LGPL, and not to allow others to
moel@111: use your version of this file under the terms of the MPL, indicate your
moel@111: decision by deleting the provisions above and replace them with the notice
moel@111: and other provisions required by the GPL or the LGPL. If you do not delete
moel@111: the provisions above, a recipient may use your version of this file under
moel@111: the terms of any one of the MPL, the GPL or the LGPL.
moel@111:
moel@111: */
moel@111:
moel@111: using System;
moel@111: using System.Collections.Generic;
moel@111: using System.Collections.ObjectModel;
moel@111: using System.Drawing;
moel@111: using Aga.Controls.Tree;
moel@111:
moel@111: namespace OpenHardwareMonitor.GUI {
moel@111: public class Node {
moel@111:
moel@111: private TreeModel treeModel;
moel@111: private Node parent;
moel@111: private NodeCollection nodes;
moel@111:
moel@111: private string text;
moel@111: private Image image;
moel@111: private bool visible;
moel@111:
moel@111: private TreeModel RootTreeModel() {
moel@111: Node node = this;
moel@111: while (node != null) {
moel@111: if (node.Model != null)
moel@111: return node.Model;
moel@111: node = node.parent;
moel@111: }
moel@111: return null;
moel@111: }
moel@111:
moel@111: public Node() : this(string.Empty) { }
moel@111:
moel@111: public Node(string text) {
moel@111: this.text = text;
moel@111: this.nodes = new NodeCollection(this);
moel@111: this.visible = true;
moel@111: }
moel@111:
moel@111: public TreeModel Model {
moel@111: get { return treeModel; }
moel@111: set { treeModel = value; }
moel@111: }
moel@111:
moel@111: public Node Parent {
moel@111: get { return parent; }
moel@111: set {
moel@111: if (value != parent) {
moel@111: if (parent != null)
moel@111: parent.nodes.Remove(this);
moel@111: if (value != null)
moel@111: value.nodes.Add(this);
moel@111: }
moel@111: }
moel@111: }
moel@111:
moel@111: public Collection<Node> Nodes {
moel@111: get { return nodes; }
moel@111: }
moel@111:
moel@111: public virtual string Text {
moel@111: get { return text; }
moel@111: set {
moel@111: if (text != value) {
moel@111: text = value;
moel@111: }
moel@111: }
moel@111: }
moel@111:
moel@111: public Image Image {
moel@111: get { return image; }
moel@111: set {
moel@111: if (image != value) {
moel@111: image = value;
moel@111: }
moel@111: }
moel@111: }
moel@111:
moel@111: public virtual bool IsVisible {
moel@111: get { return visible; }
moel@111: set {
moel@111: if (value != visible) {
moel@111: visible = value;
moel@111: TreeModel model = RootTreeModel();
moel@111: if (model != null && parent != null) {
moel@111: int index = 0;
moel@111: for (int i = 0; i < parent.nodes.Count; i++) {
moel@111: Node node = parent.nodes[i];
moel@111: if (node == this)
moel@111: break;
moel@111: if (node.IsVisible || model.ForceVisible)
moel@111: index++;
moel@111: }
moel@111: if (model.ForceVisible) {
moel@111: model.OnNodeChanged(parent, index, this);
moel@111: } else {
moel@111: if (value)
moel@111: model.OnNodeInserted(parent, index, this);
moel@111: else
moel@111: model.OnNodeRemoved(parent, index, this);
moel@111: }
moel@111: }
moel@111: if (IsVisibleChanged != null)
moel@111: IsVisibleChanged(this);
moel@111: }
moel@111: }
moel@111: }
moel@111:
moel@111: public delegate void NodeEventHandler(Node node);
moel@111:
moel@111: public event NodeEventHandler IsVisibleChanged;
moel@111: public event NodeEventHandler NodeAdded;
moel@111: public event NodeEventHandler NodeRemoved;
moel@111:
moel@111: private class NodeCollection : Collection<Node> {
moel@111: private Node owner;
moel@111:
moel@111: public NodeCollection(Node owner) {
moel@111: this.owner = owner;
moel@111: }
moel@111:
moel@111: protected override void ClearItems() {
moel@111: while (this.Count != 0)
moel@111: this.RemoveAt(this.Count - 1);
moel@111: }
moel@111:
moel@111: protected override void InsertItem(int index, Node item) {
moel@111: if (item == null)
moel@167: throw new ArgumentNullException("item");
moel@111:
moel@111: if (item.parent != owner) {
moel@111: if (item.parent != null)
moel@111: item.parent.nodes.Remove(item);
moel@111: item.parent = owner;
moel@111: base.InsertItem(index, item);
moel@111:
moel@111: TreeModel model = owner.RootTreeModel();
moel@111: if (model != null)
moel@111: model.OnStructureChanged(owner);
moel@111: if (owner.NodeAdded != null)
moel@111: owner.NodeAdded(item);
moel@111: }
moel@111: }
moel@111:
moel@111: protected override void RemoveItem(int index) {
moel@111: Node item = this[index];
moel@111: item.parent = null;
moel@111: base.RemoveItem(index);
moel@111:
moel@111: TreeModel model = owner.RootTreeModel();
moel@111: if (model != null)
moel@111: model.OnStructureChanged(owner);
moel@111: if (owner.NodeRemoved != null)
moel@111: owner.NodeRemoved(item);
moel@111: }
moel@111:
moel@111: protected override void SetItem(int index, Node item) {
moel@111: if (item == null)
moel@167: throw new ArgumentNullException("item");
moel@111:
moel@111: RemoveAt(index);
moel@111: InsertItem(index, item);
moel@111: }
moel@111: }
moel@111: }
moel@111: }