polycode-engine/Modules/Contents/UI/Source/PolyUITextInput.cpp

/*
 *  PolyUITextInput.cpp
 *  Poly
 *
 *  Created by Ivan Safrin on 7/30/08.
 *  Copyright 2008 __MyCompanyName__. All rights reserved.
 *
 */


#include "PolyUITextInput.h"

using namespace Polycode;

UITextInput::UITextInput(bool multiLine, float width, float height) : ScreenEntity() {
	this->multiLine = multiLine;
	
	draggingSelection = false;
	hasSelection = false;
	doSelectToCaret = false;
	
	caretPosition = 0;
	caretImagePosition = 0;
	
	currentLine = NULL;
	
	
	lineOffset = -1;
	numLines = 0;
	
	this->positionMode = ScreenEntity::POSITION_TOPLEFT;
	Config *conf = CoreServices::getInstance()->getConfig();	
	
	if(multiLine)
		fontName = conf->getStringValue("Polycode", "uiTextInputFontNameMultiLine");
	else
		fontName = conf->getStringValue("Polycode", "uiTextInputFontName");
	
	fontSize = conf->getNumericValue("Polycode", "uiTextInputFontSize");
	
	float rectHeight = height;
	if(!multiLine) {
		rectHeight = fontSize+12;
	} 
	
	lineSpacing = conf->getNumericValue("Polycode", "textEditLineSpacing");
	
	float st = conf->getNumericValue("Polycode", "textBgSkinT");
	float sr = conf->getNumericValue("Polycode", "textBgSkinR");
	float sb = conf->getNumericValue("Polycode", "textBgSkinB");
	float sl = conf->getNumericValue("Polycode", "textBgSkinL");
	
	padding = conf->getNumericValue("Polycode", "textBgSkinPadding");	
	
	inputRect = new UIBox(conf->getStringValue("Polycode", "textBgSkin"),
						  st,sr,sb,sl,
						  width+(padding*2), height+(padding*2));	
	
	addChild(inputRect);
	
	
	
	inputRect->addEventListener(this, InputEvent::EVENT_MOUSEDOWN);
	inputRect->addEventListener(this, InputEvent::EVENT_MOUSEUP);	
	inputRect->addEventListener(this, InputEvent::EVENT_DOUBLECLICK);		
	inputRect->addEventListener(this, InputEvent::EVENT_MOUSEMOVE);		
	inputRect->addEventListener(this, InputEvent::EVENT_MOUSEOVER);
	inputRect->addEventListener(this, InputEvent::EVENT_MOUSEOUT);
	
	selectorRectTop = new ScreenShape(ScreenShape::SHAPE_RECT, 1,1);
	selectorRectTop->setPositionMode(ScreenEntity::POSITION_TOPLEFT);
	selectorRectTop->setColor(181.0f/255.0f, 213.0f/255.0f, 255.0f/255.0f, 1);
	selectorRectTop->visible = false;
	addChild(selectorRectTop);

	selectorRectMiddle = new ScreenShape(ScreenShape::SHAPE_RECT, 1,1);
	selectorRectMiddle->setPositionMode(ScreenEntity::POSITION_TOPLEFT);	
	selectorRectMiddle->setColor(181.0f/255.0f, 213.0f/255.0f, 255.0f/255.0f, 1);
	selectorRectMiddle->visible = false;
	addChild(selectorRectMiddle);

	selectorRectBottom = new ScreenShape(ScreenShape::SHAPE_RECT, 1,1);
	selectorRectBottom->setPositionMode(ScreenEntity::POSITION_TOPLEFT);	
	selectorRectBottom->setColor(181.0f/255.0f, 213.0f/255.0f, 255.0f/255.0f, 1);
	selectorRectBottom->visible = false;
	addChild(selectorRectBottom);
		
	insertLine(true);	
	
	blinkerRect = new ScreenShape(ScreenShape::SHAPE_RECT, 1, fontSize,0,0);
	blinkerRect->setPositionMode(ScreenEntity::POSITION_TOPLEFT);
	blinkerRect->setColor(0,0,0,1);
	addChild(blinkerRect);
	blinkerRect->visible = false;
	blinkerRect->setPosition(0,3);
	
	blinkTimer = new Timer(true, 500);
	blinkTimer->addEventListener(this, Timer::EVENT_TRIGGER);

	focusable = true;
	this->width = width;
	this->height = rectHeight;
	hitwidth = width;
	hitheight = rectHeight;
	
	updateCaretPosition();
}

void UITextInput::clearSelection() {
	hasSelection = false;
	selectorRectTop->visible = false;	
	selectorRectMiddle->visible = false;	
	selectorRectBottom->visible = false;		
}


void UITextInput::setSelection(int lineStart, int lineEnd, int colStart, int colEnd) {

	if(lineStart == lineOffset) {
		selectionLine = lineEnd;
	} else {
		selectionLine = lineStart;	
	}

	if(colStart == caretPosition) {
		selectionCaretPosition = colEnd;
	} else {
		selectionCaretPosition = colStart;
	}

	
//	Logger::log("SET lineStart:%d lineEnd:%d colStart:%d colEnd:%d\n", lineStart, lineEnd, colStart, colEnd);
	
	if(lineStart > lineEnd) {
		int tmp = lineStart;
		lineStart = lineEnd;
		lineEnd = tmp;
		
		tmp = colStart;
		colStart = colEnd;
		colEnd = tmp;		
	}	
	
	if(colStart > colEnd && lineStart == lineEnd) {
		int tmp = colStart;
		colStart = colEnd;
		colEnd = tmp;
	}
	
	clearSelection();
	
	if(lineStart > lines.size()-1)
		return;	
	
	ScreenLabel *topLine = lines[lineStart];	
	
	if(colStart+1 > topLine->getText().length())
		return;
	
	float fColEnd  = colEnd;
	
	if(colEnd > topLine->getText().length() || lineStart != lineEnd)
		fColEnd = topLine->getText().length();

	float topSize, topHeight, topX;
	
	selectorRectTop->visible = true;	
	topSize = topLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), topLine->getText().substr(colStart,fColEnd-colStart), fontSize) - 4; 
	topHeight = lineHeight+lineSpacing;
	if(colStart > 0) {
		topX = topLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), topLine->getText().substr(0,colStart-1), fontSize); ;
	} else {
		topX = 0;
	}

	selectorRectTop->setScale(topSize, topHeight);
	selectorRectTop->setPosition(topX + padding + (topSize/2.0)+ 1, padding + (lineStart * (lineHeight+lineSpacing)) + (topHeight/2.0));
	
	if(lineEnd > lineStart && lineEnd < lines.size()) {
		ScreenLabel *bottomLine = lines[lineEnd];	
		selectorRectBottom->visible = true;		
		float bottomSize = bottomLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), bottomLine->getText().substr(0,colEnd), fontSize) - 4; 
		float bottomHeight = lineHeight+lineSpacing;
		selectorRectBottom->setScale(bottomSize, bottomHeight);
		selectorRectBottom->setPosition(padding + (bottomSize/2.0) + 1, padding + (lineEnd * (lineHeight+lineSpacing)) + (bottomHeight/2.0));
		
		if(lineEnd != lineStart+1) {
			// need filler
			selectorRectMiddle->visible = true;		
			float midSize = this->width-padding;
			float midHeight = 0;			
			for(int i=lineStart+1; i < lineEnd;i++) {
				midHeight += lineHeight+lineSpacing;
			}
			selectorRectMiddle->setScale(midSize, midHeight);
			selectorRectMiddle->setPosition(padding + (midSize/2.0), padding + ((lineStart+1) * (lineHeight+lineSpacing)) + (midHeight/2.0));										
			
		}
		
	}
	hasSelection = true;
	
	selectionTop = lineStart;
	selectionBottom = lineEnd;
	selectionL = colStart;
	selectionR = colEnd;	 		
}

void UITextInput::deleteSelection() {
	if(selectionTop == selectionBottom) {
		String ctext = lines[selectionTop]->getText();
		String newText = ctext.substr(0, selectionL);
		int rside = selectionR;
		if(rside > ctext.length()-1)
			rside = ctext.length() - 1;
		newText += ctext.substr(rside,ctext.length() - selectionR); 
		lines[selectionTop]->setText(newText);
	} else {
		
		String ctext = lines[selectionTop]->getText();
		String newText = ctext.substr(0, selectionL);
		lines[selectionTop]->setText(newText);

		ScreenLabel *bottomLine = lines[selectionBottom];
		
		// if whole lines to remove, do it
		vector<ScreenLabel*> linesToRemove;
		if(selectionBottom > selectionTop + 1) {
			for(int i=selectionTop+1; i < selectionBottom; i++) {
				linesToRemove.push_back(lines[i]);
			}
			for(int i=0; i < linesToRemove.size(); i++) {
				removeLine(linesToRemove[i]);
			}
		}
		
		ctext = bottomLine->getText();
		
		int rside = selectionR;
		if(rside > ctext.length()-1)
			rside = ctext.length() - 1;
		newText = ctext.substr(rside,ctext.length() - selectionR); 
		
				
		lineOffset = selectionTop;
		selectLineFromOffset();
		caretPosition = currentLine->getText().length();
		updateCaretPosition();
		currentLine->setText(currentLine->getText() + newText);	
		removeLine(bottomLine);				
		
		
	}
	clearSelection();
	caretPosition = selectionL;
	updateCaretPosition();
	
}

void UITextInput::Resize(int x, int y) {
	inputRect->resizeBox(x, y);
}

int UITextInput::insertLine(bool after) {
	
	numLines++;	
	
	ScreenLabel *newLine = new ScreenLabel(fontName, L"", fontSize, Label::ANTIALIAS_FULL);
	newLine->setColor(0,0,0,1);
	lineHeight = newLine->getHeight();
	addChild(newLine);
	
	if(after) {	
		
		if(currentLine) {
			String ctext = currentLine->getText();
			String text2 = ctext.substr(caretPosition, ctext.length()-caretPosition);
			ctext = ctext.substr(0,caretPosition);
			currentLine->setText(ctext);
			newLine->setText(text2);
			caretPosition=0;
		}
		
		currentLine = newLine;		
		
		vector<ScreenLabel*>::iterator it;
		it = lines.begin();
		
		for(int i=0; i < lineOffset+1; i++) {
			it++;
		}
		
		lineOffset = lineOffset + 1;	
		lines.insert(it,newLine);
		
		restructLines();
	} else {	
		// do we even need that? I don't think so.
	}	
	
	return 1;	
}

void UITextInput::restructLines() {
	for(int i=0; i < lines.size(); i++) {
		lines[i]->setPosition(padding,padding + (i*(lineHeight+lineSpacing)) ,0.0f);		
	}
}

void UITextInput::setText(String text) {
	if(!multiLine) {
		currentLine->setText(text);
	} else {
	}
//	this->text = text;
//	currentLine->setText(text);	
}

void UITextInput::onLoseFocus() {
	blinkerRect->visible  = false;
}

String UITextInput::getText() {
	
	if(!multiLine) {
		return currentLine->getText();
	} else {
		String totalText = L"";
		for(int i=0; i < lines.size(); i++) {
				totalText += lines[i]->getText();					
				totalText += L"\n";
		}	
		return totalText;
	}
}

void UITextInput::updateCaretPosition() {
	caretImagePosition = padding;
	if(caretPosition == 0) {
		caretImagePosition = padding;
	} else if(caretPosition > currentLine->getText().length()) {
		caretPosition = currentLine->getText().length();
		String caretSubString = currentLine->getText().substr(0,caretPosition);
		caretImagePosition = currentLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), caretSubString, fontSize);		
		caretImagePosition = caretImagePosition - 4.0f + padding;		
	} else {
		String caretSubString = currentLine->getText().substr(0,caretPosition);
		caretImagePosition = currentLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), caretSubString, fontSize);
		caretImagePosition = caretImagePosition - 4.0f + padding;		
	}
	blinkerRect->visible  = true;
	blinkTimer->Reset();
	
	if(doSelectToCaret) {
		doSelectToCaret = false;
		
	}
	
}

void UITextInput::selectLineFromOffset() {
	for(int i=0; i < lines.size(); i++) {
		if(i == lineOffset) {
			currentLine = lines[i];					
			return;
		}
	}
}

void UITextInput::dragSelectionTo(float x, float y) {
	x -= padding;
	y -= padding;
	int lineOffset = y  / (lineHeight+lineSpacing);
	if(lineOffset > lines.size()-1)
		lineOffset = lines.size()-1;

	ScreenLabel *selectToLine = lines[lineOffset];
	
	int len = selectToLine->getText().length();
	float slen;
	int caretPosition = selectToLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), selectToLine->getText().substr(0,len), fontSize);
	for(int i=0; i < len; i++) {
		slen = selectToLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), selectToLine->getText().substr(0,i), fontSize);
		if(slen > x) {
			caretPosition = i;
			break;
		}
	}
	if(x > slen)
		caretPosition = len;
	
	if(caretPosition < 0)
		caretPosition = 0;

	setSelection(this->lineOffset, lineOffset, this->caretPosition, caretPosition);
}

int UITextInput::caretSkipWordBack(int caretLine, int caretPosition) {
	for(int i=caretPosition; i > 0; i--) {
		String bit = lines[caretLine]->getText().substr(i,1);
		wchar_t chr = ((wchar_t*)bit.c_str())[0]; 
		if(((chr > 0 && chr < 48) || (chr > 57 && chr < 65) || (chr > 90 && chr < 97) || (chr > 122 && chr < 127)) && i < caretPosition-1) {
			return i+1;
		}
	}	
	return 0;
}

int UITextInput::caretSkipWordForward(int caretLine, int caretPosition) {
	int len = lines[caretLine]->getText().length();
	for(int i=caretPosition; i < len; i++) {
		String bit = lines[caretLine]->getText().substr(i,1);
		wchar_t chr = ((wchar_t*)bit.c_str())[0]; 
		if(((chr > 0 && chr < 48) || (chr > 57 && chr < 65) || (chr > 90 && chr < 97) || (chr > 122 && chr < 127)) && i > caretPosition) {
			return i;
		}
	}
	return lines[caretLine]->getText().length();	
}

void UITextInput::selectWordAtCaret() {
	
	int selectStart = 0;
	int len  = currentLine->getText().length();
	int selectEnd = len;
	
	for(int i=this->caretPosition; i > 0; i--) {
		String bit = currentLine->getText().substr(i,1);
		wchar_t chr = ((wchar_t*)bit.c_str())[0]; 
		if( (chr > 0 && chr < 48) || (chr > 57 && chr < 65) || (chr > 90 && chr < 97) || (chr > 122 && chr < 127)) {
			selectStart = i+1;
			break;
		}
	}	

	for(int i=this->caretPosition; i < len; i++) {
		String bit = currentLine->getText().substr(i,1);
		wchar_t chr = ((wchar_t*)bit.c_str())[0]; 
		if( (chr > 0 && chr < 48) || (chr > 57 && chr < 65) || (chr > 90 && chr < 97) || (chr > 122 && chr < 127)) {
			selectEnd = i;
			break;			
		}
	}	
	
	
	setSelection(this->lineOffset, this->lineOffset, selectStart, selectEnd);
}

void UITextInput::setCaretToMouse(float x, float y) {
	clearSelection();
	x -= padding;
	y -= padding;
	//if(lines.size() > 1) {
		lineOffset = y  / (lineHeight+lineSpacing);
		if(lineOffset > lines.size()-1)
			lineOffset = lines.size()-1;
		selectLineFromOffset();	
	//}
	
	int len = currentLine->getText().length();
	float slen;
	for(int i=0; i < len; i++) {
		slen = currentLine->getLabel()->getTextWidth(CoreServices::getInstance()->getFontManager()->getFontByName(fontName), currentLine->getText().substr(0,i), fontSize);
		if(slen > x) {
			caretPosition = i;
			break;
		}
	}
	if(x > slen)
		caretPosition = len;
	updateCaretPosition();	
}

void UITextInput::removeLine(ScreenLabel *line) {
	for(int i=0;i<lines.size();i++) {
		if(lines[i] == line) {
			lines.erase(lines.begin()+i);
		}
	}
	removeChild(line);
	delete line;
	restructLines();
}

void UITextInput::selectAll() {
	setSelection(0, lines.size()-1, 0, lines[lines.size()-1]->getText().length());
}

void UITextInput::insertText(String text) {
	vector<String> strings = text.split("\n");
	int numLines = lines.size();
	for(int i=0; i < strings.size(); i++) {
		if(i < numLines) {
			lines[i]->setText(strings[i]);
		} else {
			numLines++;		
			ScreenLabel *newLine = new ScreenLabel(fontName, L"", fontSize, Label::ANTIALIAS_FULL);
			newLine->setColor(0,0,0,1);
			addChild(newLine);			
			lines.push_back(newLine);
			newLine->setText(strings[i]);
		}
	}
	restructLines();	
}

String UITextInput::getSelectionText() {
	String totalText = L"";
	if(selectionTop == selectionBottom) {
		totalText = lines[selectionTop]->getText().substr(selectionL, selectionR-selectionL);	
		return totalText;
	} else {
		totalText += lines[selectionTop]->getText().substr(selectionL, lines[selectionTop]->getText().length()-selectionL);
		totalText += L"\n";		
	}
	
	if(selectionBottom > selectionTop+1) {
		for(int i=selectionTop+1; i <= selectionBottom; i++) {
			totalText += lines[i]->getText();			
			totalText += L"\n";
		}
	}
	
	totalText += lines[selectionBottom]->getText().substr(0, selectionL);
	
	return totalText;
}

void UITextInput::onKeyDown(TAUKey key, wchar_t charCode) {
	
	if(!hasFocus)
		return;
	
	
//	Logger::log("UCHAR: %d\n", charCode);	
	
	CoreInput *input = CoreServices::getInstance()->getCore()->getInput();	

	if(key == TAUK_a && (input->getKeyState(TAUK_LSUPER) || input->getKeyState(TAUK_RSUPER))) {
		selectAll();
		return;
	}

	if(key == TAUK_c && (input->getKeyState(TAUK_LSUPER) || input->getKeyState(TAUK_RSUPER))) {
		CoreServices::getInstance()->getCore()->copyStringToClipboard(getSelectionText());
		return;
	}

	if(key == TAUK_x && (input->getKeyState(TAUK_LSUPER) || input->getKeyState(TAUK_RSUPER))) {
		return;
	}

	if(key == TAUK_v && (input->getKeyState(TAUK_LSUPER) || input->getKeyState(TAUK_RSUPER))) {
		insertText(CoreServices::getInstance()->getCore()->getClipboardString());
		return;
	}	
	
	
	if(key == TAUK_LEFT) {
		if(input->getKeyState(TAUK_LSUPER) || input->getKeyState(TAUK_RSUPER)) {
			if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {
				if(hasSelection) {
					setSelection(this->lineOffset, selectionLine, this->caretPosition, 0);					
				} else {
					setSelection(this->lineOffset, this->lineOffset, this->caretPosition, 0);
				}
			} else {
				caretPosition = 0;
				clearSelection();				
				updateCaretPosition();
			}
		} else if (input->getKeyState(TAUK_LALT) || input->getKeyState(TAUK_RALT)) {
			if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {
				if(hasSelection) {
					setSelection(this->lineOffset, selectionLine, this->caretPosition, caretSkipWordBack(selectionLine, selectionCaretPosition));
				} else {
					setSelection(this->lineOffset, this->lineOffset, this->caretPosition, caretSkipWordBack(this->lineOffset, caretPosition));					
				}
			} else {				
				caretPosition = caretSkipWordBack(this->lineOffset,caretPosition);
				clearSelection();				
				updateCaretPosition();			
			}
		} else {
			if(caretPosition > 0) {
				if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {
					if(hasSelection) {
						if(selectionCaretPosition > 0)
							setSelection(this->lineOffset, selectionLine, this->caretPosition, selectionCaretPosition-1);
					} else {
						setSelection(this->lineOffset, this->lineOffset, this->caretPosition, caretPosition-1);					
					}					
				} else {									
					caretPosition--;
					clearSelection();					
					updateCaretPosition();
				}
			}
		}
		return;
	}
	
	if(key == TAUK_RIGHT) {
		if(caretPosition < currentLine->getText().length()) {			
			if(input->getKeyState(TAUK_LSUPER) || input->getKeyState(TAUK_RSUPER)) {
				if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {
					if(hasSelection) {
						setSelection(this->lineOffset, selectionLine, this->caretPosition, lines[selectionLine]->getText().length());					
					} else {
						setSelection(this->lineOffset, this->lineOffset, this->caretPosition, currentLine->getText().length());
					}
				} else {
					caretPosition = currentLine->getText().length();
					clearSelection();
				}				
			} else if (input->getKeyState(TAUK_LALT) || input->getKeyState(TAUK_RALT)) {
				if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {
					if(hasSelection) {
						setSelection(this->lineOffset, selectionLine, this->caretPosition, caretSkipWordForward(selectionLine, selectionCaretPosition));
					} else {
						setSelection(this->lineOffset, this->lineOffset, this->caretPosition, caretSkipWordForward(this->lineOffset, caretPosition));					
					}
				} else {				
					caretPosition = caretSkipWordForward(this->lineOffset,caretPosition);
					clearSelection();					
				}				
			} else {
				if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {
					if(hasSelection) {
						setSelection(this->lineOffset, selectionLine, this->caretPosition, selectionCaretPosition+1);
					} else {
						setSelection(this->lineOffset, this->lineOffset, this->caretPosition, caretPosition+1);					
					}					
				} else {									
					caretPosition++;
					clearSelection();					
				}				
			}
			updateCaretPosition();			
		}
		return;
	}
	
	if(key == TAUK_UP) {		
		if(multiLine) {
			if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {			
				if(hasSelection) {
					if(selectionLine > 0)
						setSelection(this->lineOffset, selectionLine-1, this->caretPosition, selectionCaretPosition);
				} else {
					if(this->lineOffset > 0)					
						setSelection(this->lineOffset, this->lineOffset-1, this->caretPosition, caretPosition);					
				}				
			} else {
				clearSelection();				
				if(lineOffset > 0) {
					lineOffset--;
					selectLineFromOffset();
					updateCaretPosition();							
				}
			}
		}
		blinkerRect->visible  = true;
		return;
	}
	
	if(key == TAUK_DOWN) {
		if(multiLine) {
			if(input->getKeyState(TAUK_LSHIFT) || input->getKeyState(TAUK_RSHIFT)) {			
				if(hasSelection) {
					if(selectionLine < lines.size()-1)
						setSelection(this->lineOffset, selectionLine+1, this->caretPosition, selectionCaretPosition);
				} else {
					if(this->lineOffset < lines.size()-1)					
						setSelection(this->lineOffset, this->lineOffset+1, this->caretPosition, caretPosition);					
				}				
			} else {				
				clearSelection();
				if(lineOffset < lines.size()-1) {
					lineOffset++;
					selectLineFromOffset();
					updateCaretPosition();										
				}
			}
		}
		blinkerRect->visible  = true;		
		return;
	}
	
	
	if(key == TAUK_RETURN) {
		if(hasSelection)
			deleteSelection();		
		if(multiLine) {
			insertLine(true);
			updateCaretPosition();
		}
		return;
	}	
	
	String ctext = currentLine->getText();
	
	
//	if(1) {
	if((charCode > 31 && charCode < 127) || charCode > 127) {	
		if(hasSelection)
			deleteSelection();
		ctext = currentLine->getText();		
		String text2 = ctext.substr(caretPosition, ctext.length()-caretPosition);
		ctext = ctext.substr(0,caretPosition);
		ctext += charCode + text2;
		caretPosition++;
	}
	
	if(key == TAUK_TAB && multiLine) {
		if(hasSelection)
			deleteSelection();		
		ctext = currentLine->getText();				
		String text2 = ctext.substr(caretPosition, ctext.length()-caretPosition);
		ctext = ctext.substr(0,caretPosition);
		ctext += (wchar_t)'\t' + text2;
		caretPosition++;		
	}
	
	if(key == TAUK_BACKSPACE) {
		if(hasSelection) {
			deleteSelection();
			return;
		} else {
		ctext = currentLine->getText();					
		if(caretPosition > 0) {
			if(ctext.length() > 0) {
				String text2 = ctext.substr(caretPosition, ctext.length()-caretPosition);
				ctext = ctext.substr(0,caretPosition-1);
				ctext += text2;
				caretPosition--;
			}
		} else {
			if(lineOffset > 0) {
				ScreenLabel *lineToRemove = currentLine;
				lineOffset--;
				selectLineFromOffset();
				caretPosition = currentLine->getText().length();
				updateCaretPosition();
				currentLine->setText(currentLine->getText() + ctext);	
				removeLine(lineToRemove);				
				return;
			}
		}
		}
	}
	
	currentLine->setText(ctext);	
	updateCaretPosition();
}

void UITextInput::Update() {
	if(hasSelection) {
		blinkerRect->visible = false;
	}
	blinkerRect->setPosition(caretImagePosition,currentLine->getPosition2D().y);
	if(hasFocus) {
//		inputRect->setStrokeColor(1.0f, 1.0f, 1.0f, 0.25f);	
	} else {
		blinkerRect->visible = false;		
//		inputRect->setStrokeColor(1.0f, 1.0f, 1.0f, 0.1f);
	}
	
}

UITextInput::~UITextInput() {

}
		
void UITextInput::handleEvent(Event *event) {
	if(event->getDispatcher() == inputRect) {
		switch(event->getEventCode()) {
			case InputEvent::EVENT_MOUSEDOWN:
				if(parentEntity) {
					((ScreenEntity*)parentEntity)->focusChild(this);
				} else {
					hasFocus = true;
				}
				setCaretToMouse(((InputEvent*)event)->mousePosition.x, ((InputEvent*)event)->mousePosition.y);
				draggingSelection = true;
			break;
			case InputEvent::EVENT_MOUSEUP:
				draggingSelection = false;
			break;
			case InputEvent::EVENT_DOUBLECLICK:
				selectWordAtCaret();
			break;
			case InputEvent::EVENT_MOUSEMOVE:
				if(draggingSelection) {
					dragSelectionTo(((InputEvent*)event)->mousePosition.x, ((InputEvent*)event)->mousePosition.y);		
				}
			break;
			case InputEvent::EVENT_MOUSEOVER:
				CoreServices::getInstance()->getCore()->setCursor(CURSOR_TEXT);
			break;
			case InputEvent::EVENT_MOUSEOUT:
				CoreServices::getInstance()->getCore()->setCursor(CURSOR_ARROW);
			break;				
		}
	}
	
	if(event->getDispatcher() == blinkTimer) {
		if(hasSelection || draggingSelection) {
				blinkerRect->visible  = false;
		} else {
			if(hasFocus)
				blinkerRect->visible  = !blinkerRect->visible;
			else
				blinkerRect->visible  = false;
		}
	}
	
}