OpenHardwareMonitor: GUI/Node.cs@573f1fff48b2 (annotated)

moel@111	1	/*
moel@344	2
moel@344	3	This Source Code Form is subject to the terms of the Mozilla Public
moel@344	4	License, v. 2.0. If a copy of the MPL was not distributed with this
moel@344	5	file, You can obtain one at http://mozilla.org/MPL/2.0/.
moel@344	6
moel@344	7	Copyright (C) 2009-2010 Michael Möller <mmoeller@openhardwaremonitor.org>
moel@344	8
moel@344	9	*/
moel@111	10
moel@111	11
moel@111	12	using System;
moel@111	13	using System.Collections.Generic;
moel@111	14	using System.Collections.ObjectModel;
moel@111	15	using System.Drawing;
moel@111	16	using Aga.Controls.Tree;
moel@111	17
moel@111	18	namespace OpenHardwareMonitor.GUI {
moel@111	19	public class Node {
moel@111	20
moel@111	21	private TreeModel treeModel;
moel@111	22	private Node parent;
moel@111	23	private NodeCollection nodes;
moel@111	24
moel@111	25	private string text;
moel@111	26	private Image image;
moel@111	27	private bool visible;
moel@111	28
moel@111	29	private TreeModel RootTreeModel() {
moel@111	30	Node node = this;
moel@111	31	while (node != null) {
moel@111	32	if (node.Model != null)
moel@111	33	return node.Model;
moel@111	34	node = node.parent;
moel@111	35	}
moel@111	36	return null;
moel@111	37	}
moel@111	38
moel@111	39	public Node() : this(string.Empty) { }
moel@111	40
moel@111	41	public Node(string text) {
moel@111	42	this.text = text;
moel@111	43	this.nodes = new NodeCollection(this);
moel@111	44	this.visible = true;
moel@111	45	}
moel@111	46
moel@111	47	public TreeModel Model {
moel@111	48	get { return treeModel; }
moel@111	49	set { treeModel = value; }
moel@111	50	}
moel@111	51
moel@111	52	public Node Parent {
moel@111	53	get { return parent; }
moel@111	54	set {
moel@111	55	if (value != parent) {
moel@111	56	if (parent != null)
moel@111	57	parent.nodes.Remove(this);
moel@111	58	if (value != null)
moel@111	59	value.nodes.Add(this);
moel@111	60	}
moel@111	61	}
moel@111	62	}
moel@111	63
moel@111	64	public Collection<Node> Nodes {
moel@111	65	get { return nodes; }
moel@111	66	}
moel@111	67
moel@111	68	public virtual string Text {
moel@111	69	get { return text; }
moel@111	70	set {
moel@111	71	if (text != value) {
moel@111	72	text = value;
moel@111	73	}
moel@111	74	}
moel@111	75	}
moel@111	76
moel@111	77	public Image Image {
moel@111	78	get { return image; }
moel@111	79	set {
moel@111	80	if (image != value) {
moel@111	81	image = value;
moel@111	82	}
moel@111	83	}
moel@111	84	}
moel@111	85
moel@111	86	public virtual bool IsVisible {
moel@111	87	get { return visible; }
moel@111	88	set {
moel@111	89	if (value != visible) {
moel@111	90	visible = value;
moel@111	91	TreeModel model = RootTreeModel();
moel@111	92	if (model != null && parent != null) {
moel@111	93	int index = 0;
moel@111	94	for (int i = 0; i < parent.nodes.Count; i++) {
moel@111	95	Node node = parent.nodes[i];
moel@111	96	if (node == this)
moel@111	97	break;
moel@111	98	if (node.IsVisible \|\| model.ForceVisible)
moel@111	99	index++;
moel@111	100	}
moel@111	101	if (model.ForceVisible) {
moel@111	102	model.OnNodeChanged(parent, index, this);
moel@111	103	} else {
moel@111	104	if (value)
moel@111	105	model.OnNodeInserted(parent, index, this);
moel@111	106	else
moel@111	107	model.OnNodeRemoved(parent, index, this);
moel@111	108	}
moel@111	109	}
moel@111	110	if (IsVisibleChanged != null)
moel@111	111	IsVisibleChanged(this);
moel@111	112	}
moel@111	113	}
moel@111	114	}
moel@111	115
moel@111	116	public delegate void NodeEventHandler(Node node);
moel@111	117
moel@111	118	public event NodeEventHandler IsVisibleChanged;
moel@111	119	public event NodeEventHandler NodeAdded;
moel@111	120	public event NodeEventHandler NodeRemoved;
moel@111	121
moel@111	122	private class NodeCollection : Collection<Node> {
moel@111	123	private Node owner;
moel@111	124
moel@111	125	public NodeCollection(Node owner) {
moel@111	126	this.owner = owner;
moel@111	127	}
moel@111	128
moel@111	129	protected override void ClearItems() {
moel@111	130	while (this.Count != 0)
moel@111	131	this.RemoveAt(this.Count - 1);
moel@111	132	}
moel@111	133
moel@111	134	protected override void InsertItem(int index, Node item) {
moel@111	135	if (item == null)
moel@167	136	throw new ArgumentNullException("item");
moel@111	137
moel@111	138	if (item.parent != owner) {
moel@111	139	if (item.parent != null)
moel@111	140	item.parent.nodes.Remove(item);
moel@111	141	item.parent = owner;
moel@111	142	base.InsertItem(index, item);
moel@111	143
moel@111	144	TreeModel model = owner.RootTreeModel();
moel@111	145	if (model != null)
moel@111	146	model.OnStructureChanged(owner);
moel@111	147	if (owner.NodeAdded != null)
moel@111	148	owner.NodeAdded(item);
moel@111	149	}
moel@111	150	}
moel@111	151
moel@111	152	protected override void RemoveItem(int index) {
moel@111	153	Node item = this[index];
moel@111	154	item.parent = null;
moel@111	155	base.RemoveItem(index);
moel@111	156
moel@111	157	TreeModel model = owner.RootTreeModel();
moel@111	158	if (model != null)
moel@111	159	model.OnStructureChanged(owner);
moel@111	160	if (owner.NodeRemoved != null)
moel@111	161	owner.NodeRemoved(item);
moel@111	162	}
moel@111	163
moel@111	164	protected override void SetItem(int index, Node item) {
moel@111	165	if (item == null)
moel@167	166	throw new ArgumentNullException("item");
moel@111	167
moel@111	168	RemoveAt(index);
moel@111	169	InsertItem(index, item);
moel@111	170	}
moel@111	171	}
moel@111	172	}
moel@111	173	}

author	moel.mich
	Sun, 23 Sep 2012 18:37:43 +0000
changeset 380	573f1fff48b2
parent 167	b7cc9d09aefe
permissions	-rw-r--r--