find.cs

c#精彩编程百例（源代码）

//  Find.cs 
//  Copyright (C) 2000 Andrea Paatz
//  Copyright (C) 2000 Mike Krueger
//
//  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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

using SharpDevelop.Gui;
using SharpDevelop.Gui.Edit.Text;
using SharpDevelop.Gui.Window;

namespace SharpDevelop.Internal.Text.Search {
	
	public class Find
	{
		public static MainWindow Main;
		public static Search     search = new Search("");
		
//		public static bool WholeWords    = false;
		public static bool WrapAtTheEnd  = true;
		public bool hadfirstindex        = false;
		
		protected bool Found(TextAreaControl area, Point here, Point end)
		{
			int length = search.What.Length;
			if (here.Y < end.Y || (here.Y == end.Y && here.X < end.X)){
				area.Caret.CaretPos = new Point(here.X + length, here.Y);
				area.Selection.SetNoSelection();
				area.Selection.SelectionStart = here;
				area.Selection.SelectionEnd = new Point(here.X + length, here.Y);
				area.UpdateSelection(null, null);
				area.ScrollToCaret();
				
				return true;
			} else {
				return false;
			}
		}
		
		public  bool SelectionEqualsPattern()
		{
			TextAreaControl area = Main.ActiveContentWindow.TextArea;
			string text = area.Buffer.GetText(area.Selection.SelectionStart, area.Selection.SelectionEnd);
			return text.Equals(search.What); 
		}
		
		protected bool FindInFile(ContentWindow window, Point begin, Point end, bool wrap)
		{
			if (window != null) {
				TextBuffer b = window.TextArea.Buffer;
				Point here = search.Find(b, begin, end);
				TextAreaControl area = Main.ActiveContentWindow.TextArea;
				if(!Found(area, here, end)){
					if(wrap){
						here = search.Find(b, new Point(0, 0), begin);
						if(!Found(area, here, begin)) {
							return false;
						}
					}else {
						return false;
					}
				}
				return true;
			}
			return false;
		}
		
		public virtual bool FindNext()
		{
			return false;
		}
	}
	
	public class FindInWholeProject : Find
	{
		public void FindProject()
		{
//			System.String[] files = Main.ProjectBrowser.Project.File;
		}
		public override bool FindNext()
		{
			MessageBox.Show("TODO : FindInWholeProject");
			return false;
		}
	}
	
	public class FindInAllOpenFiles : Find
	{
		private int index = 0;
		private int firstIndex = 0;
		private Point begin = new Point (0, 0);
		private Point firstBegin;
		
		public FindInAllOpenFiles()
		{
			index = 0;
			foreach (ContentWindow w in Main.MdiChildren){
				if (w == Main.ActiveContentWindow)
					break;
				++index;
			}
			firstIndex = index;
			begin = firstBegin = Main.ActiveContentWindow.TextArea.Caret.CaretPos;
		}
		
		private void FindOpenLast(){/*
			System.Console.WriteLine("fol begin");
			System.Collections.ArrayList window = Main.ActiveContentWindow;
			ContentWindow w = (ContentWindow)window[index];
			TextBuffer b = w.TextArea.Buffer;
			Point end = new Point(0, b.Length);
			Point p = end;
			System.Console.WriteLine("1");
			while (index != firstIndex) {
			System.Console.WriteLine("bla " + index);
				w = (ContentWindow)window[index];
				b = w.TextArea.TextBuffer;
				end = new Point(0, b.Length);
				if(FindInFile(w, begin, end, false))
					break;
//				p = search.Find(b, begin, end);
//				if(p != end){
//					break;
//				}
				begin = new Point(0, 0);
				index = (index + 1) % window.Count;
			}
			System.Console.WriteLine("2 " + index);
			if (index == firstIndex){
				w = (ContentWindow)window[index];
				if(!FindInFile(w, begin, firstBegin, false)){
					MessageBox.Show("!not found!");
					return;
				}
			}
			System.Console.WriteLine("3");
			w.Select();
			System.Console.WriteLine("4");
			begin = w.TextArea.Caret.CaretPos;
			System.Console.WriteLine("fol end");*/
		}
		
		public void FindOpenFirst()
		{/*
			System.Console.WriteLine("fof begin");

			System.Collections.ArrayList window = Main.textWindow;
			ContentWindow w = (ContentWindow)window[index];
			TextBuffer b = w.TextArea.TextBuffer;
			Point end = new Point(0, b.Length);
			Point p = end;
//			while (index < window.Count){
				w = (ContentWindow)window[firstIndex];
				b = w.TextArea.TextBuffer;
				end = new Point(0, b.Length);
				if(FindInFile(w, begin, end, false)) {
					break;
				} else {
					begin = new Point(0, 0);
					index = (firstIndex + 1) % window.Count;
					FindOpenLast();
				}
			System.Console.WriteLine("fof end");*/
		}
		
		public override bool FindNext()
		{
//			bool ret = false;
			if (index == firstIndex && hadfirstindex) {
//				MessageBox.Show("!not found!");
				return false;
			}
			Point begin = ((ContentWindow)Main.MdiChildren[index]).TextArea.Caret.CaretPos;
			Point end = new Point(0, ((ContentWindow)Main.MdiChildren[index]).TextArea.Buffer.Length);
			if (FindInFile(((ContentWindow)Main.MdiChildren[index]), begin, end, false))  {
				((ContentWindow)Main.MdiChildren[index]).Select();
				return true;
			}
			if (index == firstIndex && !WrapAtTheEnd) {
				hadfirstindex = true;
			}
			index = (index + 1) % Main.MdiChildren.Length;
			((ContentWindow)Main.MdiChildren[index]).TextArea.Caret.CaretPos = new Point(0, 0);
//			ret = this.FindNext();
			return this.FindNext();
		}
	}
	
	public class FindInBuffer : Find
	{
		public override bool FindNext()
		{
			ContentWindow w = Main.ActiveContentWindow;
			Point begin = w.TextArea.Caret.CaretPos;
			if(!FindInFile(w, begin, new Point(0, w.TextArea.Buffer.Length), WrapAtTheEnd)){
//				MessageBox.Show("!not found!");
				return false;
			}else
				return true;
		}
	}
}