实例介绍
【实例简介】C# 的HtmlEdit，支持右键菜单
【实例截图】
【核心代码】
namespace Test
{
using System;
using System.IO;
using System.Windows.Forms;
using ZetaHtmlEditControl.Code.Configuration;
using ZetaHtmlEditControl.UI.EditControlDerives;
public partial class MainForm : Form
{
string DocumentFile;
int DocumentTextHashCode;
public MainForm()
{
InitializeComponent();
AllowDrop = true;
DragDrop = (sender, e) =>
{
if (e.Data is DataObject && ((DataObject)e.Data).ContainsFileDropList())
foreach (string filePath in ((DataObject)e.Data).GetFileDropList())
{
LoadFile(filePath);
break;
}
};
DragEnter = (sender, e) =>
{
if (e.Data != null && ((DataObject)e.Data).ContainsFileDropList())
e.Effect = DragDropEffects.Move;
};
Text = "ZetaPad - Untitled";
//htmlEditUserControl1.IE10RenderingMode = false; //for testing only
htmlEditUserControl1.ToolStrip.Items.RemoveAt(0);
Action<int, ToolStripMenuItem> DuplicateAsToolbarButton =
(index, menuItem) =>
{
var button = new ToolStripButton { Image = menuItem.Image };
button.Click = (s, e) => menuItem.PerformClick();
button.ToolTipText = menuItem.ToolTipText;
htmlEditUserControl1.ToolStrip.Items.Insert(index, button);
};
DuplicateAsToolbarButton(0, printToolStripMenuItem);
DuplicateAsToolbarButton(0, printPreviewToolStripMenuItem);
htmlEditUserControl1.ToolStrip.Items.Insert(0, new ToolStripSeparator());
DuplicateAsToolbarButton(0, saveToolStripMenuItem);
DuplicateAsToolbarButton(0, openToolStripMenuItem);
DuplicateAsToolbarButton(0, newToolStripMenuItem);
}
HtmlEditControl HtmlEditControl
{
get
{
return htmlEditUserControl1.HtmlEditControl;
}
}
string DocumentText
{
get
{
//return HtmlEditControl.CompleteDocumentText;
string dir = @"C:\";
if (DocumentFile != null)
dir = Path.GetDirectoryName(DocumentFile);
return HtmlEditControl.GetDocumentText(dir, true);
//return HtmlEditControl.DocumentText;
}
}
public void SelectWord()
{
SendKeys.SendWait("^{LEFT}");
SendKeys.SendWait("^ {RIGHT}");
}
public void OnMouseDblClick()
{
//explicit word selection is only needed for the default IE10 rendering mode
if (htmlEditUserControl1.IE10RenderingMode)
SelectWord();
}
private void TestForm_Shown(object sender, EventArgs e)
{
var configuration = new HtmlEditControlConfiguration
{
AllowEmbeddedImages = true,
AllowFontChange = true,
AllowPrint = true
};
HtmlEditControl.Configure(configuration);
New();
}
void New()
{
HtmlEditControl.SetDocumentText("<p></p>", @"C:\", true);
//DocumentTextHashCode = DocumentText.GetHashCode();
//The code above does not work.
//At this stage the document is not finalized and DocumentText does not have
//yet it's final value ("empty text"), which is in HTML format is "\r\n<P></P>"
DocumentTextHashCode = "\r\n<P></P>".GetHashCode();
}
private void TestForm_Load(object sender, EventArgs e)
{
LoadHistory();
//HtmlEditControl.WantCloseDialogWithOK = delegate { MessageBox.Show("Close."); };
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult result = NeedToSaveDocument();
if (result == DialogResult.Yes)
Save(DocumentFile);
else if (result == DialogResult.Cancel)
return;
Open();
}
void Open()
{
using (var form = new OpenFileDialog())
{
if (form.ShowDialog(this) == DialogResult.OK)
{
form.CheckFileExists = true;
form.Filter = "HTML files" @"|*.html";
LoadFile(form.FileName);
}
}
}
void LoadFile(string file)
{
string text = File.ReadAllText(file);
HtmlEditControl.SetDocumentText(text, Path.GetDirectoryName(file), true);
DocumentTextHashCode = DocumentText.GetHashCode();
DocumentFile = file;
Text = "ZetaPad - " DocumentFile;
AddToHistory(file);
}
void SaveFile(string file)
{
//File.WriteAllText(file, DocumentText);
File.WriteAllText(file, HtmlEditControl.CompleteDocumentText);
DocumentTextHashCode = DocumentText.GetHashCode();
DocumentFile = file;
Text = "ZetaPad - " DocumentFile;
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
Save(DocumentFile);
}
void Save(string file)
{
if (file == null)
using (var dialog = new SaveFileDialog())
{
dialog.Filter = "HTML files" @"|*.html";
dialog.CheckPathExists = true;
if (dialog.ShowDialog(this) == DialogResult.OK)
SaveFile(dialog.FileName);
}
else
SaveFile(file);
}
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult result = NeedToSaveDocument();
if (result == DialogResult.Yes)
Save(DocumentFile);
else if (result == DialogResult.Cancel)
return;
New();
}
private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
Save(null);
}
private void printToolStripMenuItem_Click(object sender, EventArgs e)
{
HtmlEditControl.ExecutePrint();
}
private void printPreviewToolStripMenuItem_Click(object sender, EventArgs e)
{
HtmlEditControl.ExecutePrintPreview();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
}
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
DialogResult result = NeedToSaveDocument();
if (result == DialogResult.Yes)
Save(DocumentFile);
else if (result == DialogResult.Cancel)
e.Cancel = true;
}
DialogResult NeedToSaveDocument()
{
if (DocumentTextHashCode != DocumentText.GetHashCode())
{
string message = "Do you want to save changes to " (DocumentFile ?? "Untitled") "?";
return MessageBox.Show(message, "ZetaPad", MessageBoxButtons.YesNoCancel);
}
else
return DialogResult.No;
}
void LoadHistory()
{
}
void ClearHistory()
{
}
void AddToHistory(string file)
{
}
}
}
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