using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            toolStripTextBox1.Text = "https://w...content-available-to-author-only...o.jp/";
            webBrowser1.Navigating += new WebBrowserNavigatingEventHandler(webBrowser1_Navigating);
            webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
            //webBrowser1.NewWindow += new CancelEventHandler(webBrowser1_NewWindow);
            //treeView1.NodeMouseClick += new TreeNodeMouseClickEventHandler(treeView1_NodeMouseClick);
            treeView1.AfterSelect += new TreeViewEventHandler(treeView1_AfterSelect);
        }

        void webBrowser1_NewWindow(object sender, CancelEventArgs e)
        {
            e.Cancel = true;
        }

        int objcount = 0;
        HtmlElement oldelem;
        string oldstring;

        private void toolStripButton1_Click(object sender, EventArgs e)
        {
            try
            {
                objcount = 0;
                this.Enabled = false;
                webBrowser1.SuspendLayout();
                webBrowser1.Navigate(toolStripTextBox1.Text);
            }
            catch
            {
                statusStrip1.Text = "URLが不正です。" +
                    toolStripTextBox1.Text;
                this.Enabled = true;
            }
        }

        void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e)
        {
            objcount++;
        }

        void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            objcount--;
            if (objcount == 0)
            {
                treeView1.SuspendLayout();
                treeView1.Nodes.Clear();
                TreeNode tnBody = new TreeNode();
                tnBody.Text = "Body";
                tnBody.Tag = webBrowser1.Document.Body;
                this.NodeSet(tnBody, webBrowser1.Document.Body);
                treeView1.Nodes.Add(tnBody);
                //treeView1.ExpandAll();
                this.Enabled = true;
                //webBrowser1.ScrollBarsEnabled = false;
                treeView1.ResumeLayout();
                webBrowser1.ResumeLayout();
            }
        }
        //htmlDocument再帰的に調べてノードを作成
        void NodeSet(TreeNode tn, HtmlElement elem)
        {
            foreach (HtmlElement e in elem.Children)
            {
                TreeNode t = new TreeNode();
                t.Text = e.TagName;
                t.Tag = e;
                tn.Nodes.Add(t);
                this.NodeSet(t, e);
            }
        }
        void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            //e.Node.Expand();
            this.DataSet(e.Node);
        }

        void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
        {
            this.DataSet(e.Node);
        }
        void DataSet(TreeNode node)
        {
            if (oldelem != null) oldelem.Style = oldstring;
            textBox1.Clear();
            if (node.Tag == null) return;
            HtmlElement elem = (HtmlElement)node.Tag;
            //this.TextSet("InnerHtml:" + elem.InnerHtml);
            //this.TextSet("InnerText:" + elem.InnerText);
            //this.TextSet("OuterHtml:" + elem.OuterHtml);
            //this.TextSet("OuterText:" + elem.OuterText);
            textBoxInnerHtml.Text = elem.InnerHtml;
            textBoxInnerText.Text = elem.InnerText;
            textBoxOuterHtml.Text = elem.OuterHtml;
            textBoxOuterText.Text = elem.OuterText;
            this.TextSet("[Id             ]:" + elem.Id);
            if (elem.Name != string.Empty && elem.Name.Length != 0)
                this.TextSet("[Name           ]:" + elem.Name);
            this.TextSet("[Style          ]:" + elem.Style);
            this.TextSet("[TagName        ]:" + elem.TagName);
            this.TextSet("[ClientRectangle]:" + elem.ClientRectangle.ToString());
            this.TextSet("[OffsetRectangle]:" + elem.OffsetRectangle.ToString());
            this.TextSet("[ScrollRectangle]:" + elem.ScrollRectangle.ToString());
            this.TextSet("[Children       ]:" + elem.Children.Count.ToString());
            webBrowser1.Document.Window.ScrollTo(elem.OffsetRectangle.X, elem.OffsetRectangle.Y);
            //HtmlElementのborder機能を使って枠線を実現してるので
            //HtmlElementを切り替えた場合に元のStyleに戻すために
            oldstring = elem.Style;
            oldelem = elem;
            elem.Style += "border:solid";
        }
        void TextSet(string s)
        {
            textBox1.AppendText(s + Environment.NewLine);
        }
    }
}