NEU

FastColoredTextBox/FindForm.cs

@@ -0,0 +1,129 @@
+using System;
+using System.Windows.Forms;
+using System.Text.RegularExpressions;
+using System.Collections.Generic;
+
+namespace FastColoredTextBoxNS
+{
+    public partial class FindForm : Form
+    {
+        bool firstSearch = true;
+        Place startPlace;
+        FastColoredTextBox tb;
+
+        public FindForm(FastColoredTextBox tb)
+        {
+            InitializeComponent();
+            this.tb = tb;
+        }
+
+        private void btClose_Click(object sender, EventArgs e)
+        {
+            Close();
+        }
+
+        private void btFindNext_Click(object sender, EventArgs e)
+        {
+            FindNext(tbFind.Text);
+        }
+
+        public virtual void FindNext(string pattern)
+        {
+            try
+            {
+                RegexOptions opt = cbMatchCase.Checked ? RegexOptions.None : RegexOptions.IgnoreCase;
+                if (!cbRegex.Checked)
+                    pattern = Regex.Escape(pattern);
+                if (cbWholeWord.Checked)
+                    pattern = "\\b" + pattern + "\\b";
+                //
+                Range range = tb.Selection.Clone();
+                range.Normalize();
+                //
+                if (firstSearch)
+                {
+                    startPlace = range.Start;
+                    firstSearch = false;
+                }
+                //
+                range.Start = range.End;
+                if (range.Start >= startPlace)
+                    range.End = new Place(tb.GetLineLength(tb.LinesCount - 1), tb.LinesCount - 1);
+                else
+                    range.End = startPlace;
+                //
+                foreach (var r in range.GetRangesByLines(pattern, opt))
+                {
+                    tb.Selection = r;
+                    tb.DoSelectionVisible();
+                    tb.Invalidate();
+                    return;
+                }
+                //
+                if (range.Start >= startPlace && startPlace > Place.Empty)
+                {
+                    tb.Selection.Start = new Place(0, 0);
+                    FindNext(pattern);
+                    return;
+                }
+                MessageBox.Show("Not found");
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message);
+            }
+        }
+
+        private void tbFind_KeyPress(object sender, KeyPressEventArgs e)
+        {
+            if (e.KeyChar == '\r')
+            {
+                btFindNext.PerformClick();
+                e.Handled = true;
+                return;
+            }
+            if (e.KeyChar == '\x1b')
+            {
+                Hide();
+                e.Handled = true;
+                return;
+            }
+        }
+
+        private void FindForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            if (e.CloseReason == CloseReason.UserClosing)
+            {
+                e.Cancel = true;
+                Hide();
+            }
+            this.tb.Focus();
+        }
+
+        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
+        {
+            if (keyData == Keys.Escape)
+            {
+                this.Close();
+                return true;
+            }
+            return base.ProcessCmdKey(ref msg, keyData);
+        }
+
+        protected override void OnActivated(EventArgs e)
+        {
+            tbFind.Focus();
+            ResetSerach();
+        }
+
+        void ResetSerach()
+        {
+            firstSearch = true;
+        }
+
+        private void cbMatchCase_CheckedChanged(object sender, EventArgs e)
+        {
+            ResetSerach();
+        }
+    }
+}