//zmg, 03.01.01 

//this file needs a better description!



//Modified by Bargavi 

//to be compatible with flash MX



// Modified by Dean Wood 05.10.01

//   Changed hard-coded 7s to cursorXOffset.

//   Changed active_router references to VISIBLE_ROUTER

//     This allows scrolling during telnet sessions

//   Added manual_scrolling_setSlider()

//   Added manual_scrolling_setConent()



// Modified by Dean Wood 05.29.01

//    Added kludge to fix a bug in output_writeOut()





// Manual Scrolling



//manual_scrolling_scrollUp()

//IN: <none>

//DO: scrolls the current Hyperterminal screen "up" 1 line

//OUT: the console's output has been scrolled up 1 line

function manual_scrolling_scrollUp() {





	var r = eval("_root.r" + _root.VISIBLE_ROUTER); //ptr to active router object

	var optr = eval("_root.HyperTerminal.s" + _root.VISIBLE_ROUTER); //ptr to output (hyperterminal console)



	//r.indexLine = the number of the first line that is showing on the screen.

	//if it is less than 1 (all of the lines are showing on the screen), then

	//we can return because there is no need to scroll up.

	if (r.indexLine < 1) {

		return;

	}





	//kluge to fix a bug in output_writeOut()

	if(r.indexLine == r.stopLine)

		r.indexLine--;



	//decrement the indexLine counter (the lowest line number 

	//currently visible on the screen)

	r.indexLine--;



	//hide the cursor in the console window, and clear the output.

	_root.HyperTerminal.cursor._visible = false;

	optr.output.text = "";



	//_root.message = _root.VISIBLE_ROUTER + " (Scroll Up):\n";

	//_root.message += "  indexLine = " + r.indexLine + "\n";

	//_root.message += "  lastDLine = " + r.lastDLine + "\n";

	//_root.message += "  lastLine = " + r.lastLine + "\n";



	//output the 24 lines that now fit on the screen (given the updated

	//indexLine) via optr, the pointer to the Hyperterminal console

	for (var j = r.indexLine; j < (r.indexLine+24); j++) {

		//_root.message += "  line[" + j + "] = " + r.line[j];

		optr.output.text += r.line[j];//Bargavi

	}



	manual_scrolling_setSlider();

}







// manual_scrolling_scrollDown()

//IN: <none>

//DO: scrolls the current Hyperterminal screen "down" 1 line

//OUT: the console's output has been scrolled down 1 line

function manual_scrolling_scrollDown() {





	var rptr = eval("_root.r" + _root.VISIBLE_ROUTER); //ptr to active router object

	var optr = eval("_root.HyperTerminal.s" + _root.VISIBLE_ROUTER); //ptr to output (Hyperterminal console)



	//if we are at the last line of the display buffer (we can't scroll down

	//anymore because we're already at the bottom of the output) then

	//return.

	if (rptr.indexLine > rptr.lastDLine-24) {

		return;

	}



	//increment the indexLine counter (the lowest line number 

	//currently visible on the screen), and (temporarily) clear 

	//the Hyperterminal output

	rptr.indexLine++;

	optr.output.text = "";//Bargavi



	//_root.message = _root.VISIBLE_ROUTER + " (Scroll Down):\n";

	//_root.message += "  indexLine = " + rptr.indexLine + "\n";

	//_root.message += "  lastDLine = " + rptr.lastDLine + "\n";

	//_root.message += "  lastLine = " + rptr.lastLine + "\n";



	//output the 24 lines that now fit on the screen (given the updated

	//indexLine) via optr, the pointer to the Hyperterminal console

	for (var j = rptr.indexLine; j < (rptr.indexLine+24); j++) {

		//_root.message += "  line[" + j + "] = " + rptr.line[j];

		optr.output.text += rptr.line[j];//Bargavi

	}

	

	manual_scrolling_setSlider();

	

	if (rptr.indexLine == (rptr.lastDLine-23)) {

	

		//set the x-position of the cursor to the end of the

		//last line of displayed output

		rptr.cursorX = rptr.line[rptr.lastDLine].length;

		

		// (?)

		_root.HyperTerminal.cursor._x = rptr.cx + rptr.cursorXOffset * rptr.cursorX;

		

		//set the now correctly positioned Hyperterminal cursor to visible

		_root.HyperTerminal.cursor._visible = true;

	}

}





// manual_scrolling_setSlider()

//IN: <none>

//DO: positions the scroll bar's slider.

//OUT: the scroll bar's slider has been positioned.

function manual_scrolling_setSlider() {



	var rptr = eval("_root.r" + _root.VISIBLE_ROUTER); //ptr to active router object

	var sptr = _root.HyperTerminal.ScrollBar.Slider; //ptr to scroll bar slider





	//kluge to fix a bug in output_writeOut()

	if(rptr.indexLine == rptr.stopLine)

		rptr.indexLine--;



	var percentage = rptr.indexLine / (rptr.lastDLine - 23);

	sptr._y = sptr.range * percentage + sptr.min;

}





// manual_scrolling_setContent()

//IN: <none>

//DO: positions the content based on the scroll bar's slider position.

//OUT: the content has been positioned.

function manual_scrolling_setContent() {



	var rptr = eval("_root.r" + _root.VISIBLE_ROUTER); //ptr to active router object

	var optr = eval("_root.HyperTerminal.s" + _root.VISIBLE_ROUTER); //ptr to output (Hyperterminal console)

	var sptr = _root.HyperTerminal.ScrollBar.Slider; //ptr to scroll bar slider



	var percentage = (sptr._y - sptr.min) / sptr.range;

	rptr.indexLine = Math.round((rptr.lastDLine - 23) * percentage);



	//temporarily clear the Hyperterminal output

	optr.output.text = "";//Bargavi



	//output the 24 lines that now fit on the screen (given the updated

	//indexLine) via optr, the pointer to the Hyperterminal console

	for (var i = rptr.indexLine; i < (rptr.indexLine + 24); i++) {

		optr.output.text += rptr.line[i];//Bargavi

	}



	if(rptr.indexLine == (rptr.lastDLine - 23)) {



		//set the x-position of the cursor to the end of the

		//last line of displayed output

		rptr.cursorX = rptr.line[rptr.lastDLine].length;

	

		// (?)

		_root.HyperTerminal.cursor._x = rptr.cx + rptr.cursorXOffset * rptr.cursorX;

		

		//set the now correctly positioned Hyperterminal cursor to visible

		_root.HyperTerminal.cursor._visible = true;

	}

	else {



		//hide the cursor in the console window.

		_root.HyperTerminal.cursor._visible = false;

	}

}