/*
 * FindDialog.cpp 
 * Copyright (c) 2009 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */



// SOL++2000 
// 1999.09.24 Modified
// 2000.02.18


#include <sol\ApplicationView.h>
#include <sol\ScrolledText.h>
#include <sol\FindDialog.h>
#include <sol\FileDialog.h>
#include "Resource.h"

namespace SOL {

class TextEditor :public ApplicationView {
private:

    UINT        findMsg;
    ScrolledText    text;
    FileDialog    fileDialog;
    FindDialog    findDialog;


public:
    TextEditor(Application& applet, const TCHAR* name, Args& args)
    :ApplicationView(applet, name, args) 
    {
        Args ar;
        ar.set(XmNnoHideSel, True);
        text.create(this, _T(""), ar);
    
        // 1999.09.24
        add(text);

        findMsg = RegisterWindowMessage(FINDMSGSTRING);

        ar.reset();
        ar.set(XmNflags, FR_DOWN);
        findDialog.create(this, NULL, ar);

        ar.reset();
        fileDialog.create(this, NULL, ar);

        addCallback(XmNmenuCallback, ID_OPEN, this,
            (Callback)&TextEditor::open, NULL);
        addCallback(XmNmenuCallback, ID_FIND, this,
            (Callback)&TextEditor::find, NULL);

        addCallback(XmNmenuCallback, ID_EXIT, this,
            (Callback)&TextEditor::exit, NULL);

        addEventHandler(findMsg, this,
            (Handler)&TextEditor::search, NULL);
    }


private:
    long search(Event& event) 
    {
        DWORD flag = findDialog.getFlag();
        TCHAR* find = findDialog.getFindString();
        //MessageBox(NULL, find, _T("debug"), MB_OK);

        if(strlen(find) > 0 && (flag & FR_DOWN)) {
            searchDown();
        }
        else {
            searchUp();
            // FR_UP case is not supported.
            MessageBeep(-1);
        }
        return NULL;
    }

private:
    void searchDown()
    {
        int  lines = text.getLineCount();
        TCHAR* find = findDialog.getFindString();

        int    start, end;
        text.getSel(&start, &end);
        int line = text.lineFromChar(end);
        int pos  = text.lineIndex(line);

        Boolean flag = FALSE;
        int  n = strlen(find);
        for(int i = line; i<lines; i++) {
            int lineLength = text.lineLength(i);
            /*if (lineLength ==0) {
                continue;
            }
            */
            TCHAR* buffer = new TCHAR[lineLength+1];
            int len = text.getLine(i, buffer, lineLength);
    
            buffer[len] = Zero;
            //MessageBox(NULL, buffer, _T("Debug"), MB_OK);
            int indx = 0;
            if(line == i) {
                indx = end - pos;
            }
            if(len >= n) {
                
                for(int j = indx; j<len; j++) {
                    if(strncmp(&buffer[j], find, n) == 0) {
                        text.setFocus();
                        text.setSel(pos+j, pos+j+n);
                        text.scrollCaret();
                        flag = TRUE;
                        break;
                    }
                }
            
            }
            delete [] buffer;
            pos += (len+2);    
            if(flag) {
                break;
            }
         }
    }

private:
    void searchUp()
    {
        int  lines = text.getLineCount();
        //TCHAR buffer[512];
        TCHAR* find = findDialog.getFindString();

        int    start = 0;
        int end   = 0;
        text.getSel(&start, &end);
        int line = text.lineFromChar(start);
        int pos  = text.lineIndex(line);

        Boolean flag = FALSE;
        int  n = strlen(find);
        for(int i = line; i>=0; i--) {
            int lineLength = text.lineLength(i);
            if (lineLength ==0) {
    
                continue;
            }

            TCHAR* buffer = new TCHAR[lineLength+1];
            int len = text.getLine(i, buffer, lineLength);

            //int len = text.getLine(i, buffer, sizeof(buffer));
            buffer[len] = Zero;

            int indx = len-1;
            if(line == i) {
                indx = start - pos;
            }
            if(len >= n) {
                
                for(int j = indx-1; j>=0; j--) {
                    if(strncmp(&buffer[j], find, n) == 0) {
                    setText(&buffer[j]);
                    text.setFocus();
                    text.setSel(pos+j, pos+j+n);
                    text.scrollCaret();

                    flag = TRUE;
                    break;
                   }
                }
            
            }
            int lenx = 0;
            if(i>0) {
                lenx = text.getLine(i-1, buffer, lineLength);
                pos -= (lenx+2);
            }

            delete [] buffer;

            if(flag) {
                break;
            }
         }
    }

private:
    void find(Action& action)
    {
        if(!findDialog.isWindow()) {
            findDialog.find(_T(""));
        }
    }

private:

    void open(Action& action)
    {
        if(fileDialog.open()) {
            TCHAR* name = fileDialog.getFileName();
            text.load(name);
        }
    }
};

}


// Sample Main
void    Main(int argc, TCHAR** argv)
{
    const TCHAR* appClass = _T("TextEditor");
    try {
        Application applet(appClass, argc, argv);

        Args args;
        TextEditor editor(applet, appClass, args);
        editor.realize();
        applet.run();
    } catch (...) {

    }
}