// TextBuffer.custom - customizations to Gtk.TextBuffer.
// 
// Authors:  Mike Kestner  <mkestner@ximian.com>
//
// Copyright (c) 2004-2006  Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General 
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.


[DllImport("libgtk-win32-2.0-0.dll")]
static extern void gtk_text_buffer_set_text (IntPtr raw, IntPtr text, int len);

#if !GTK_SHARP_2_8
public string Text {
	get {
		return GetText (StartIter, EndIter, false);
	}
	set {
		IntPtr native = GLib.Marshaller.StringToPtrGStrdup (value);
		gtk_text_buffer_set_text (Handle, native, -1);
		GLib.Marshaller.Free (native);
	}
}
#endif

public void Clear ()
{
	Gtk.TextIter start = StartIter, end = EndIter;
	Delete (ref start, ref end);
}

[Obsolete ("Replaced by 'ref TextIter, ref TextIter' overload")]
public void Delete (TextIter start, TextIter end )
{
	Delete (ref start, ref end);
}

// overload to paste clipboard contents at cursor editable by default.
public void PasteClipboard (Gtk.Clipboard clipboard)
{
	gtk_text_buffer_paste_clipboard(Handle, clipboard.Handle, IntPtr.Zero, true);
}

[DllImport("libgtk-win32-2.0-0.dll")]
static extern void gtk_text_buffer_insert (IntPtr raw, ref Gtk.TextIter iter, IntPtr text, int len);

[Obsolete ("Replaced by 'ref TextIter iter' overload")]
public void Insert (TextIter iter, string text)
{
	Insert (ref iter, text);
}

public void Insert (ref Gtk.TextIter iter, string text)
{
	IntPtr native = GLib.Marshaller.StringToPtrGStrdup (text);
	gtk_text_buffer_insert (Handle, ref iter, native, -1);
	GLib.Marshaller.Free (native);
}

[Obsolete ("Replaced by 'ref TextIter iter' overload")]
public void InsertRange (TextIter iter, TextIter start, TextIter end )
{
	InsertRange (ref iter, start, end);
}

[Obsolete ("Replaced by 'ref TextIter iter' overload")]
public void InsertWithTags (TextIter iter, string text, params TextTag[] tags)
{
	InsertWithTags (ref iter, text, tags);
}

public void InsertWithTags (ref TextIter iter, string text, params TextTag[] tags)
{
	TextIter start;
	int offset = iter.Offset;
	Insert (ref iter, text);

	start = GetIterAtOffset (offset);
	iter = GetIterAtOffset (offset + text.Length);

	foreach (TextTag t in tags)
		this.ApplyTag (t, start, iter);
}

public void InsertWithTagsByName (ref TextIter iter, string text, params string[] tagnames)
{
	TextIter start;
	int offset = iter.Offset;
	Insert (ref iter, text);

	start = GetIterAtOffset (offset);
	iter = GetIterAtOffset (offset + text.Length);

	foreach (string tagname in tagnames) {
		TextTag tag = TagTable.Lookup (tagname);
		if (tag != null)
			this.ApplyTag (tag, start, iter);
	}
}

[Obsolete("Use the TextBuffer.Text property's setter")]
public void SetText (string text)
{
	Text = text;
}

[DllImport("libgtk-win32-2.0-0.dll")]
static extern bool gtk_text_buffer_insert_interactive(IntPtr raw, ref Gtk.TextIter iter, IntPtr text, int len, bool default_editable);

public bool InsertInteractive(ref Gtk.TextIter iter, string text, bool default_editable)
{
	IntPtr native = GLib.Marshaller.StringToPtrGStrdup (text);
	bool result = gtk_text_buffer_insert_interactive(Handle, ref iter, native, -1, default_editable);
	GLib.Marshaller.Free (native);
	return result;
}

[DllImport("libgtk-win32-2.0-0.dll")]
static extern bool gtk_text_buffer_insert_interactive_at_cursor(IntPtr raw, IntPtr text, int len, bool default_editable);

public bool InsertInteractiveAtCursor(string text, bool default_editable) 
{
	IntPtr native = GLib.Marshaller.StringToPtrGStrdup (text);
	bool result = gtk_text_buffer_insert_interactive_at_cursor(Handle, native, -1, default_editable);
	GLib.Marshaller.Free (native);
	return result;
}

[DllImport("libgtk-win32-2.0-0.dll")]
static extern void gtk_text_buffer_insert_at_cursor(IntPtr raw, IntPtr text, int len);

public void InsertAtCursor(string text) 
{
	IntPtr native = GLib.Marshaller.StringToPtrGStrdup (text);
	gtk_text_buffer_insert_at_cursor(Handle, native, -1);
	GLib.Marshaller.Free (native);
}

[DllImport("libgtk-win32-2.0-0.dll")]
static extern IntPtr gtk_text_buffer_serialize (IntPtr raw, IntPtr content_buffer, IntPtr format, ref Gtk.TextIter start, ref Gtk.TextIter end, out UIntPtr length);

public byte[] Serialize(Gtk.TextBuffer content_buffer, Gdk.Atom format, Gtk.TextIter start, Gtk.TextIter end) 
{
	UIntPtr length;
	IntPtr raw_ret = gtk_text_buffer_serialize (Handle, content_buffer == null ? IntPtr.Zero : content_buffer.Handle, format == null ? IntPtr.Zero : format.Handle, ref start, ref end, out length);
	if (raw_ret == IntPtr.Zero)
		return new byte [0];
	int sz = (int) (uint) length;
	byte[] ret = new byte [sz];
	Marshal.Copy (ret, 0, raw_ret, sz);
	return ret;
}

[DllImport("libgtk-win32-2.0-0.dll")]
static extern IntPtr gtk_text_buffer_get_serialize_formats(IntPtr raw, out int n_formats);

[DllImport("libgtk-win32-2.0-0.dll")]
static extern IntPtr gtk_text_buffer_get_deserialize_formats(IntPtr raw, out int n_formats);

public Gdk.Atom[] DeserializeFormats {
	get {
		int n_formats;
		IntPtr raw_ret = gtk_text_buffer_get_deserialize_formats(Handle, out n_formats);
		Gdk.Atom[] result = new Gdk.Atom [n_formats];
		for (int i = 0; i < n_formats; i++) {
			IntPtr format = Marshal.ReadIntPtr (raw_ret, i * IntPtr.Size);
			result [i] = format == IntPtr.Zero ? null : (Gdk.Atom) GLib.Opaque.GetOpaque (format, typeof (Gdk.Atom), false);
		}
		return result;
	}
}

public Gdk.Atom[] SerializeFormats {
	get {
		int n_formats;
		IntPtr raw_ret = gtk_text_buffer_get_serialize_formats(Handle, out n_formats);
		Gdk.Atom[] result = new Gdk.Atom [n_formats];
		for (int i = 0; i < n_formats; i++) {
			IntPtr format = Marshal.ReadIntPtr (raw_ret, i * IntPtr.Size);
			result [i] = format == IntPtr.Zero ? null : (Gdk.Atom) GLib.Opaque.GetOpaque (format, typeof (Gdk.Atom), false);
		}
		return result;
	}
}