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edit_ctrl.h

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// Author:  Daniel Albuschat ( daniel@viming.de ) 
// File:    edit_ctrl.h
// Date:    Sun Apr 20 13:39:34 20030
// Content:  

#ifndef EDIT_CTRL_H_436961225
#define EDIT_CTRL_H_436961225
#include "base_control.h"
#include "events.h"
#include "cursive.h"
#include <ncurses.h>
#include <string>
#include <cctype>

namespace crs {

  class edit_events: public window_events {
    public:
      virtual void onChange();
  };

  class text_ctrl: public focused_ctrl {
    private:
      const std::string &getText();
      void setText_( const std::string &Text );
    protected: 
      std::string mText;
      virtual void doSetText( const std::string &Text );
      virtual void doGetText();
    public:
      text_ctrl( base_control *Parent, window_events *Events, 
          unsigned int Left, unsigned int Top, unsigned int Width, unsigned int Height );
      property< text_ctrl, read_write, std::string > text;
  };

  template< typename T > class edit_ctrl: public text_ctrl, public styled_ctrl {
    public:
      typedef T (*transformator)( std::string );
    protected:
      transformator trans;
    public:
      edit_ctrl( base_control *Parent, edit_events *Events, unsigned int Left, 
          unsigned int Top, unsigned int Length, T *Var, transformator Transform, 
          const style::styles Style = rect, const char custom_left='[', const char custom_right=']' ):
        text_ctrl( Parent, Events, Left, Top, Length, 1 ),
      styled_ctrl( Style, custom_left, custom_right ), trans( Transform ) {
        custom_left_border  = custom_left;
        custom_right_border = custom_right;
      }
      virtual void draw() {
        buffer.drawHLine( 1, 0, mWidth - 2, '_' );
        buffer.setText( mText, 1, 0 );
        buffer[ 0 ] = sc::getLeftBorder( mStyle, custom_left_border );
        buffer[ mWidth - 1 ] = sc::getRightBorder( mStyle, custom_right_border );
      }
      virtual bool keyPress( const int key ) {
        focused_ctrl::keyPress( key );
        if( std::isprint( key ) ) {
          mText += char(key);
          doChange();
          return false;
        } else {
          switch( key ) {
            case KEY_BACKSPACE:
              if( mText.size() > 0 ) {
                mText = mText.substr( 0, mText.size() - 1 );
                doChange();
              }
              break;
          }
          return true;
        }
      }
      virtual void doChange() {
        mCursorpos.x = mText.size() + 1 < mWidth - 1 ? mText.size() + 1 : mWidth - 2;
        if( events ) {
          static_cast<edit_events*>(events)->onChange();
        }
      }
  };

}

#endif

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