// /**
// ********
// *
// * ORIGIONAL CODE BASE IS Copyright (C) 2006-2010 by Alphons van der Heijden
// * The code was donated on 4/28/2010 by Alphons van der Heijden
// * To Brandon'Dimentox Travanti' Husbands & Malcolm J. Kudra which in turn Liscense under the GPLv2.
// * In agreement to Alphons van der Heijden wishes.
// *
// * The community would like to thank Alphons for all of his hard work, blood sweat and tears.
// * Without his work the community would be stuck with crappy editors.
// *
// * The source code in this file ("Source Code") is provided by The LSLEditor Group
// * to you under the terms of the GNU General Public License, version 2.0
// * ("GPL"), unless you have obtained a separate licensing agreement
// * ("Other License"), formally executed by you and Linden Lab.  Terms of
// * the GPL can be found in the gplv2.txt document.
// *
// ********
// * GPLv2 Header
// ********
// * LSLEditor, a External editor for the LSL Language.
// * Copyright (C) 2010 The LSLEditor Group.
// 
// * This program is free software; you can redistribute it and/or
// * modify it under the terms of the GNU General Public License
// * as published by the Free Software Foundation; either version 2
// * of the License, or (at your option) any later version.
// *
// * 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 General Public License for more details.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program; if not, write to the Free Software
// * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
// ********
// *
// * The above copyright notice and this permission notice shall be included in all 
// * copies or substantial portions of the Software.
// *
// ********
// */
using System;
using System.Text; // StringBuilder
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace LSLEditor
{
	public partial class FindWindow : Form
	{
		private LSLEditorForm lslEditForm;
		private int intStart;
		private int intEnd;

		private bool m_ReplaceAlso;

		public FindWindow(LSLEditorForm lslEditForm)
		{
			InitializeComponent();
			this.lslEditForm = lslEditForm;
			this.intStart = 0;
			this.intEnd = 0;
		}

		public bool ReplaceAlso
		{
			get
			{
				return m_ReplaceAlso;
			}
			set
			{
				m_ReplaceAlso = value;
				this.groupBox2.Enabled = m_ReplaceAlso;
				this.Replace.Enabled = m_ReplaceAlso;
				this.ReplaceAll.Enabled = m_ReplaceAlso;

				if (m_ReplaceAlso)
					this.Text = "Find and Replace";
				else
					this.Text = "Find";
			}
		}

		public string KeyWord
		{
			set
			{
				this.label1.Text = ""; // clear out message
				if (value != "")
				{
					this.comboBoxFind.Text = value;
				}
				else
				{
					if (this.comboBoxFind.Items.Count > 0)
						this.comboBoxFind.SelectedIndex = this.comboBoxFind.Items.Count - 1;
				}
			}
		}

		private bool UpdateComboBox(ComboBox comboBox)
		{
			string strText = comboBox.Text;
			bool Found = false;

			foreach (string strC in comboBox.Items)
			{
				if (strC == strText)
				{
					Found = true;
					break;
				}
			}

			if (!Found)
				comboBox.Items.Add(strText);
			return Found;
		}

		public void Find()
		{
			this.label1.Text = "";
			EditForm editForm = this.lslEditForm.ActiveMdiForm as EditForm;
			if (editForm == null)
				return;

			if (!UpdateComboBox(this.comboBoxFind))
			{
				editForm.TextBox.SelectionLength = 0;
				editForm.TextBox.SelectionStart = 0;
			}

			RichTextBoxFinds options = RichTextBoxFinds.None;

			if (this.checkBoxMatchCase.Checked) options |= RichTextBoxFinds.MatchCase;
			if (this.checkBoxReverse.Checked) options |= RichTextBoxFinds.Reverse;
			if (this.checkBoxWholeWord.Checked) options |= RichTextBoxFinds.WholeWord;

			if (this.checkBoxReverse.Checked)
			{
				intStart = 0; // start cant change ;-)
				intEnd = editForm.TextBox.SelectionStart;
			}
			else
			{
				intStart = editForm.TextBox.SelectionStart + editForm.TextBox.SelectionLength;
				if (intStart == editForm.TextBox.Text.Length)
					intStart = 0;
				intEnd = editForm.TextBox.Text.Length - 1; // length can change!!
			}

			string strFind = this.comboBoxFind.Text;
			int intIndex = editForm.Find(strFind, intStart, intEnd, options);
			if (intIndex < 0)
			{
				this.label1.Text = "Not found...";
				return;
			}
		}

		private void FindNext_Click(object sender, EventArgs e)
		{
			Find();
			this.Focus();
		}

		private void comboBoxFind_KeyDown(object sender, KeyEventArgs e)
		{
			if (e.KeyCode == Keys.Return)
			{
				if (this.Replace.Enabled)
				{
					this.comboBoxReplace.Focus();
					e.SuppressKeyPress = true;
				}
				else
				{
					Find();
					e.SuppressKeyPress = true;
				}
			}
		}

		private void Replace_Click(object sender, EventArgs e)
		{
			EditForm editForm = this.lslEditForm.ActiveMdiForm as EditForm;
			if (editForm == null)
				return;

			UpdateComboBox(this.comboBoxReplace);

			if (editForm.TextBox.SelectionLength > 0)
			{
				string strReplacement = this.comboBoxReplace.Text;
				editForm.TextBox.ReplaceSelectedText(strReplacement);
			}

			Find();
			this.Focus();
		}

		// WildCardToRegex not used!!
		private string WildCardToRegex(string strWildCard)
		{
			StringBuilder sb = new StringBuilder(strWildCard.Length + 8);
			for (int intI = 0; intI < strWildCard.Length; intI++)
			{
				char chrC = strWildCard[intI];
				switch (chrC)
				{
					case '*':
						sb.Append(".*");
						break;
					case '?':
						sb.Append(".");
						break;
					case '\\':
						intI++;
						if (intI < strWildCard.Length)
							sb.Append(Regex.Escape(strWildCard[intI].ToString()));
						break;
					default:
						sb.Append(Regex.Escape(chrC.ToString()));
						break;
				}
			}
			return sb.ToString();
		}

		private void ReplaceAll_Click(object sender, EventArgs e)
		{
			EditForm editForm = this.lslEditForm.ActiveMdiForm as EditForm;
			if (editForm == null)
				return;

			UpdateComboBox(this.comboBoxReplace);

			string strPattern;
			string strFind = Regex.Escape(this.comboBoxFind.Text);
			string strReplacement = this.comboBoxReplace.Text;
			string strSourceCode = editForm.SourceCode;

			RegexOptions regexOptions = RegexOptions.Compiled;
			if (!this.checkBoxMatchCase.Checked)
				regexOptions |= RegexOptions.IgnoreCase;
			if (this.checkBoxWholeWord.Checked)
				strPattern = @"\b" + strFind + @"\b";
			else
				strPattern = strFind;

			Regex regex = new Regex(strPattern, regexOptions);

			int intCount = 0;
			foreach(Match m in regex.Matches(strSourceCode))
			{
				if (m.Value.Length > 0)
					intCount++;
			}
			if (intCount == 0)
			{
				MessageBox.Show("No matches found");
			}
			else
			{
				if (MessageBox.Show("There are " + intCount + " occurences, replace them all?", "Find and Replace", MessageBoxButtons.YesNoCancel) == DialogResult.Yes)
					editForm.SourceCode = regex.Replace(strSourceCode, strReplacement);
			}
			this.Focus();
		}

		private void FindWindow_FormClosing(object sender, FormClosingEventArgs e)
		{
			lslEditForm.TopMost = true; // 15 nove 2007
			this.Visible = false;
			e.Cancel = true;
			lslEditForm.TopMost = false;// 15 nove 2007
		}

		private void FindWindow_KeyDown(object sender, KeyEventArgs e)
		{
			if (e.KeyData == Keys.Escape)
			{
				this.Visible = false;
				e.SuppressKeyPress = true;
				e.Handled = true;
			}

			if (e.KeyCode == Keys.Return)
			{
				Find();
				e.SuppressKeyPress = true;
				this.Focus();
			}

			if (e.KeyCode == Keys.F3)
			{
				Find();
				e.SuppressKeyPress = true;
				this.Focus();
			}


		}

		public void FindFocus()
		{
			this.comboBoxFind.Focus();
		}


	}
}