Code Coverage Statistics for Source File

c:\Tools\SD3\src\Libraries\ICSharpCode.TextEditor\Project\Src\Gui\TextAreaDragDropHandler.cs

Sequence Point Coverage N/A 0 of 0	Branch Coverage N/A 0 of 0	Lines 127

Sequence Point Coverage

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Branch Coverage

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Lines

127

Highlight: Uncovered Code Covered Code


// <file>
//     <copyright see="prj:///doc/copyright.txt"/>
//     <license see="prj:///doc/license.txt"/>
//     <owner name="Mike Krüger" email="mike@icsharpcode.net"/>
//     <version>$Revision: 2727 $</version>
// </file>

using System;
using System.Drawing;
using System.Windows.Forms;

using ICSharpCode.TextEditor.Document;

namespace ICSharpCode.TextEditor
{
	public class TextAreaDragDropHandler
	{
		TextArea textArea;
		
		public void Attach(TextArea textArea)
		{
			this.textArea = textArea;
			textArea.AllowDrop = true;
			
			textArea.DragEnter += new DragEventHandler(OnDragEnter);
			textArea.DragDrop  += new DragEventHandler(OnDragDrop);
			textArea.DragOver  += new DragEventHandler(OnDragOver);
		}
		
		static DragDropEffects GetDragDropEffect(DragEventArgs e)
		{
			if ((e.AllowedEffect & DragDropEffects.Move) > 0 &&
			    (e.AllowedEffect & DragDropEffects.Copy) > 0) {
				return (e.KeyState & 8) > 0 ? DragDropEffects.Copy : DragDropEffects.Move;
			} else if ((e.AllowedEffect & DragDropEffects.Move) > 0) {
				return DragDropEffects.Move;
			} else if ((e.AllowedEffect & DragDropEffects.Copy) > 0) {
				return DragDropEffects.Copy;
			}
			return DragDropEffects.None;
		}
		
		protected void OnDragEnter(object sender, DragEventArgs e)
		{
			if (e.Data.GetDataPresent(typeof(string))) {
				e.Effect = GetDragDropEffect(e);
			}
		}
		
		
		void InsertString(int offset, string str)
		{
			textArea.Document.Insert(offset, str);
			
			textArea.SelectionManager.SetSelection(new DefaultSelection(textArea.Document,
			                                                            textArea.Document.OffsetToPosition(offset),
			                                                            textArea.Document.OffsetToPosition(offset + str.Length)));
			textArea.Caret.Position = textArea.Document.OffsetToPosition(offset + str.Length);
			textArea.Refresh();
		}
		
		protected void OnDragDrop(object sender, DragEventArgs e)
		{
			Point p = textArea.PointToClient(new Point(e.X, e.Y));
			
			if (e.Data.GetDataPresent(typeof(string))) {
				textArea.BeginUpdate();
				try {
					int offset = textArea.Caret.Offset;
					if (textArea.TextEditorProperties.UseCustomLine
					    && textArea.Document.CustomLineManager.IsReadOnly(textArea.Caret.Line, false))
					{
						// prevent dragging text into readonly section
						return;
					}
					textArea.Document.UndoStack.StartUndoGroup();
					if (e.Data.GetDataPresent(typeof(DefaultSelection))) {
						ISelection sel = (ISelection)e.Data.GetData(typeof(DefaultSelection));
						if (sel.ContainsPosition(textArea.Caret.Position)) {
							return;
						}
						if (GetDragDropEffect(e) == DragDropEffects.Move) {
							if (textArea.TextEditorProperties.UseCustomLine
							    && textArea.Document.CustomLineManager.IsReadOnly(sel, false))
							{
								// prevent dragging text out of readonly section
								return;
							}
							int len = sel.Length;
							textArea.Document.Remove(sel.Offset, len);
							if (sel.Offset < offset) {
								offset -= len;
							}
						}
					}
					textArea.SelectionManager.ClearSelection();
					InsertString(offset, (string)e.Data.GetData(typeof(string)));
					textArea.Document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.WholeTextArea));
				} finally {
					textArea.Document.UndoStack.EndUndoGroup();
					textArea.EndUpdate();
				}
			}
		}
		
		protected void OnDragOver(object sender, DragEventArgs e)
		{
			if (!textArea.Focused) {
				textArea.Focus();
			}
			
			Point p = textArea.PointToClient(new Point(e.X, e.Y));
			
			if (textArea.TextView.DrawingPosition.Contains(p.X, p.Y)) {
				TextLocation realmousepos= textArea.TextView.GetLogicalPosition(p.X - textArea.TextView.DrawingPosition.X,
				                                                                p.Y - textArea.TextView.DrawingPosition.Y);
				int lineNr = Math.Min(textArea.Document.TotalNumberOfLines - 1, Math.Max(0, realmousepos.Y));
				
				textArea.Caret.Position = new TextLocation(realmousepos.X, lineNr);
				textArea.SetDesiredColumn();
				if (e.Data.GetDataPresent(typeof(string))) {
					e.Effect = GetDragDropEffect(e);
				}
			}
		}
	}
}

L	V	Source
1		// <file>
2		// <copyright see="prj:///doc/copyright.txt"/>
3		// <license see="prj:///doc/license.txt"/>
4		// <owner name="Mike Krüger" email="mike@icsharpcode.net"/>
5		// <version>$Revision: 2727 $</version>
6		// </file>
7
8		using System;
9		using System.Drawing;
10		using System.Windows.Forms;
11
12		using ICSharpCode.TextEditor.Document;
13
14		namespace ICSharpCode.TextEditor
15		{
16		public class TextAreaDragDropHandler
17		{
18		TextArea textArea;
19
20		public void Attach(TextArea textArea)
21		{
22		this.textArea = textArea;
23		textArea.AllowDrop = true;
24
25		textArea.DragEnter += new DragEventHandler(OnDragEnter);
26		textArea.DragDrop += new DragEventHandler(OnDragDrop);
27		textArea.DragOver += new DragEventHandler(OnDragOver);
28		}
29
30		static DragDropEffects GetDragDropEffect(DragEventArgs e)
31		{
32		if ((e.AllowedEffect & DragDropEffects.Move) > 0 &&
33		(e.AllowedEffect & DragDropEffects.Copy) > 0) {
34		return (e.KeyState & 8) > 0 ? DragDropEffects.Copy : DragDropEffects.Move;
35		} else if ((e.AllowedEffect & DragDropEffects.Move) > 0) {
36		return DragDropEffects.Move;
37		} else if ((e.AllowedEffect & DragDropEffects.Copy) > 0) {
38		return DragDropEffects.Copy;
39		}
40		return DragDropEffects.None;
41		}
42
43		protected void OnDragEnter(object sender, DragEventArgs e)
44		{
45		if (e.Data.GetDataPresent(typeof(string))) {
46		e.Effect = GetDragDropEffect(e);
47		}
48		}
49
50
51		void InsertString(int offset, string str)
52		{
53		textArea.Document.Insert(offset, str);
54
55		textArea.SelectionManager.SetSelection(new DefaultSelection(textArea.Document,
56		textArea.Document.OffsetToPosition(offset),
57		textArea.Document.OffsetToPosition(offset + str.Length)));
58		textArea.Caret.Position = textArea.Document.OffsetToPosition(offset + str.Length);
59		textArea.Refresh();
60		}
61
62		protected void OnDragDrop(object sender, DragEventArgs e)
63		{
64		Point p = textArea.PointToClient(new Point(e.X, e.Y));
65
66		if (e.Data.GetDataPresent(typeof(string))) {
67		textArea.BeginUpdate();
68		try {
69		int offset = textArea.Caret.Offset;
70		if (textArea.TextEditorProperties.UseCustomLine
71		&& textArea.Document.CustomLineManager.IsReadOnly(textArea.Caret.Line, false))
72		{
73		// prevent dragging text into readonly section
74		return;
75		}
76		textArea.Document.UndoStack.StartUndoGroup();
77		if (e.Data.GetDataPresent(typeof(DefaultSelection))) {
78		ISelection sel = (ISelection)e.Data.GetData(typeof(DefaultSelection));
79		if (sel.ContainsPosition(textArea.Caret.Position)) {
80		return;
81		}
82		if (GetDragDropEffect(e) == DragDropEffects.Move) {
83		if (textArea.TextEditorProperties.UseCustomLine
84		&& textArea.Document.CustomLineManager.IsReadOnly(sel, false))
85		{
86		// prevent dragging text out of readonly section
87		return;
88		}
89		int len = sel.Length;
90		textArea.Document.Remove(sel.Offset, len);
91		if (sel.Offset < offset) {
92		offset -= len;
93		}
94		}
95		}
96		textArea.SelectionManager.ClearSelection();
97		InsertString(offset, (string)e.Data.GetData(typeof(string)));
98		textArea.Document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.WholeTextArea));
99		} finally {
100		textArea.Document.UndoStack.EndUndoGroup();
101		textArea.EndUpdate();
102		}
103		}
104		}
105
106		protected void OnDragOver(object sender, DragEventArgs e)
107		{
108		if (!textArea.Focused) {
109		textArea.Focus();
110		}
111
112		Point p = textArea.PointToClient(new Point(e.X, e.Y));
113
114		if (textArea.TextView.DrawingPosition.Contains(p.X, p.Y)) {
115		TextLocation realmousepos= textArea.TextView.GetLogicalPosition(p.X - textArea.TextView.DrawingPosition.X,
116		p.Y - textArea.TextView.DrawingPosition.Y);
117		int lineNr = Math.Min(textArea.Document.TotalNumberOfLines - 1, Math.Max(0, realmousepos.Y));
118
119		textArea.Caret.Position = new TextLocation(realmousepos.X, lineNr);
120		textArea.SetDesiredColumn();
121		if (e.Data.GetDataPresent(typeof(string))) {
122		e.Effect = GetDragDropEffect(e);
123		}
124		}
125		}
126		}
127		}