// MY CANVAS CLASSimport java.io.IOException;import javax.microedition.lcdui.game.GameCanvas;import javax.microedition.lcdui.Graphics;import javax.microedition.lcdui.*;import java.util.*;import javax.microedition.rms.RecordStoreException;/** * @author Ed's */public class MyCanvas extends GameCanvas { public String[] keys = regularKey; public static final String[] regularKey = {".?!,@`-_:;()&\'\"~10$+x*/\\|[]=<>#","abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz"}; public static final String[] capitalKey = {".?!,@`-_:;()&\'\"~10$+x*/\\|[]=<>#","ABC", "DEF", "GHI", "JKL", "MNO", "PQRS", "TUV", "WXYZ"}; public static final String[] numbKey = {"1,2,3,4,5,6,7,8,9"}; StringBuffer width = new StringBuffer(); public StringBuffer sms; // hold the whole sms text public StringBuffer word; //hold the current typed, per word basis, new buffer created to replace the old one if space pressed public static wordRS db; Timer keyTimer; Vector suggestedVector; public static char ch; public boolean keypress=false; public boolean capital; public boolean diffrentKey; public char last; public boolean dontPrint=true; //dont print if timerTask callling confirmPaint or it is at begining of the text public boolean first; //first char entered public boolean enteredNew=false; // if the entered is new word public boolean sBoxAppeared=false; public boolean notPrintingSuggestion=true; public boolean notInDatabase=false; //if true the queried word not in the database until space pressed it will stay true String currentIndicator="abc"; String oneWord; // word string buffer that has been converted to string int countPress=0; int zeroPress=0; int sWordIndex=0; public int counter=-1; int index=-1; int print=0; int white_space=6; //var for draw rect int x, y; int baseline=10; int y_axis=12; int line=1; String justPressed; int prevPressed; char prevChar; Font font; public long time; private int selection_speed=150; private int red=0,green=0,blue=255; private int back_red=250,back_green=250,back_blue=250; Form menu; public MyCanvas(){ super(false); first=true; // this.main=main; sms=new StringBuffer(); word= new StringBuffer(); Graphics g=getGraphics(); font=Font.getFont(Font.FACE_PROPORTIONAL,Font.STYLE_BOLD,Font.SIZE_LARGE); keyTimer = new Timer (); keyTimer.schedule (new timerTask (this),500, selection_speed); drawIndicator(currentIndicator); try{db = new wordRS();} catch(RecordStoreException rse){rse.printStackTrace();} } public void submitQuery(){ if(!notInDatabase){ try{ suggestedVector = db.getSuggestion(oneWord); } catch(RecordStoreException rse){ rse.printStackTrace(); } if(suggestedVector.size()>0){ drawSBox(); //call the draw box & and draw the suggested Suggested word. sBoxAppeared=true;//sBoxAppear=true drawSWords(); } else{ notInDatabase=true; //set booleean to indicate that the word is not exsisted in the database } } } public boolean notBegining(){ if(baseline == 10 && line == 1){return false;} else {return true;} } public void drawIndicator(String indicator){ Font f = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_ITALIC, Font.SIZE_SMALL); Graphics g = getGraphics(); g.setFont(f); int x= getWidth()-20; g.setColor(back_red,back_green,back_blue); g.fillRect(x,2,15,10); g.setColor(20,20,20); g.drawString(indicator, x, 2, g.TOP|g.LEFT); } public void addNewWord(){ if(word.length()>0){ //only when the word buffer is not empty try { db.addRecord(oneWord); } catch (RecordStoreException ex) {ex.printStackTrace();} catch (IOException ex) {ex.printStackTrace();} } } public void delFromWord(){ if(word.length()>0){ word.deleteCharAt(word.length()-1); oneWord = word.toString(); } } public void callPaint(char ch){ drawIndicator(currentIndicator); Graphics g= getGraphics(); g.setColor(back_red,back_green,back_blue); if(first){ g.fillRect(0,0,getWidth(),getHeight()); reset(); redrawAll(); first=false; } //baseline -1 so that i can cover the pointer g.fillRect(baseline-1,y_axis,font.charWidth(this.last)+3,font.getHeight()); g.setColor(red,green,blue); g.setFont(font); g.drawChar(ch,baseline,line*24,g.LEFT|g.BASELINE); flushGraphics(); } public void showPointer(){ Graphics g = getGraphics(); g.setColor(0,0,0); g.drawLine(baseline,y_axis,baseline,2*line*12); flushGraphics(); } //pointer appear //pointer disappear-use white line so that it cover the pointer line public void hidePointer(){ Graphics g = getGraphics(); g.setColor(back_red,back_green,back_blue); g.drawLine(baseline,y_axis,baseline,2*line*12); flushGraphics(); } //draw the selected public void ConfirmPaint(char ch){ Graphics g = getGraphics(); sms.append(ch); if(notPrintingSuggestion){addToWord();} //ad the char to the string buffer that holds the word g.setColor(red,green,blue); g.setFont(font); g.drawChar(ch,baseline,line*24,g.LEFT|g.BASELINE); //draw the selected baseline+=font.charWidth(ch); // so that the nect letter won't be drawn on the same position if(baseline>getWidth()-30){ //move to the next line width.append((char)baseline); baseline=10;y_axis+=24; line+=1; } flushGraphics(); if(sms.charAt(sms.length()-1)==' '){submitQuery();} } public void addToWord(){ word.append(ch); oneWord = word.toString(); } public void drawSelectedSuggestion(int Index){ notPrintingSuggestion=false; StringBuffer selectedWord = (StringBuffer) suggestedVector.elementAt(Index); for(int i= word.length(); i<=selectedWord.length(); i++){ char sChar = selectedWord.charAt(i-1); ConfirmPaint(sChar); } notPrintingSuggestion=true; } public synchronized void deleteChar(){ if(sms.charAt(sms.length()-1)==' '){ //if the previous character is space baseline-=white_space; // Graphics g= getGraphics(); // g.setColor(back_red,back_green,back_blue); // g.fillRect(baseline,y_axis,font.charWidth(sms.charAt(sms.length()-1))+2,font.getHeight()); sms.deleteCharAt(sms.length()-1); delFromWord(); } else{ baseline-=font.charWidth(sms.charAt(sms.length()-1)); Graphics g= getGraphics(); g.setColor(back_red,back_green,back_blue); g.fillRect(baseline,y_axis,font.charWidth(sms.charAt(sms.length()-1))+2,font.getHeight()); delFromWord(); } flushGraphics(); } public void redraw(char ch ){ Graphics g= getGraphics(); g.setColor(red,green,blue); g.setFont(font); g.drawChar(ch,baseline,line*24,g.LEFT|g.BASELINE); baseline+=font.charWidth(ch); if(baseline>getWidth()-30){ width.append((char)baseline); baseline=10;y_axis+=24; line+=1; } flushGraphics(); } public void reset(){ if(width.length() >0) width.delete(0,width.length()-1); line=1; baseline=10;y_axis=12; } public void redrawAll(){ Graphics g=getGraphics(); g.setColor(back_red,back_green,back_blue); g.fillRect(0,0,getWidth(),getHeight()); reset(); for(int a=0;a<sms.length();a++) redraw(sms.charAt(a)); } public void drawSBox(){ Graphics g = getGraphics(); g.setColor(0,0,0); x=getWidth()/2-getWidth()/6; y=y_axis+20; g.drawRect(x , y, getWidth()/3, font.getHeight()*5+40); sBoxAppeared=true; flushGraphics(); } public void hideSBox(){ Graphics g = getGraphics(); g.setColor(back_red,back_green,back_blue); x=getWidth()/2-getWidth()/6; y=y_axis+20; g.fillRect(x , y, getWidth()/3, font.getHeight()*5+40); sBoxAppeared=false; flushGraphics(); } public void drawSWords(){ int X= x+5; int Y= y+4; Graphics g = getGraphics(); g.setColor(red, green, blue); for(int i=0; i<5; i++){ g.drawString((i+1)+(String)suggestedVector.elementAt(i), X, Y, g.BASELINE|g.HCENTER); Y=Y+10; } } public synchronized void keyPressed (int keyCode) { hideSBox();// if user keep preessing without choosing hide the suggestionBox time=System.currentTimeMillis(); // record the time when the keypress is pressed index=keyCode-49; // -49 is for motorola phone keycode, but it works fine on the standard emulator too if(keyCode==-8){ //-8 is keycode for clear button DELETE CHAR (does not delete properly ????) if(sms.length()>0){ hidePointer(); if(baseline<=10){ System.out.println(baseline); line-=2; baseline=(int)width.charAt(line); line++; y_axis-=24; } deleteChar(); } } if(keyCode==35){//35 is the keycode for SPACE button (still having problem it only works properly when users wait for timeout) if(notBegining()){ hidePointer(); sms.append(" "); baseline+=white_space; prevPressed=keyCode; showPointer(); if(notInDatabase){addNewWord();} notInDatabase=false; word = new StringBuffer(); //if space just pressed reset the buffer coz the next letter should be belong to new word } } else{ //ACCEPTING USER KEYPRESS TO SELECT THE SUGGESTED WORD --START if(sBoxAppeared){ //executed only when the suggestion box appear drawSelectedSuggestion(index); db.updateFrequency(index); sBoxAppeared=false; word = new StringBuffer(); }//ACCEPTING USER KEYPRESS TO SELECT THE SUGGESTED WORD --STOP*/ if(keyCode == prevPressed || dontPrint){ //dontPrint: timerTask has excecuted confirmpaint so counterPress has to be reseted keypress=true; int limit = setLimit(index); if(dontPrint){countPress=limit+1;} if(countPress<limit){ MyCanvas.ch=keys[index].charAt(countPress); callPaint(MyCanvas.ch); countPress++; } else{ countPress=0; MyCanvas.ch=keys[index].charAt(countPress); callPaint(MyCanvas.ch); countPress++; } dontPrint=false; } else{ //this is executed when the key is not repeated (prev!=) ConfirmPaint(last); countPress=0; MyCanvas.ch=keys[index].charAt(countPress); callPaint(MyCanvas.ch); countPress++; } } last=MyCanvas.ch; prevPressed=keyCode; }public int setLimit(int index){ //limit is do determine the last element of the String array "KEY" int limit = 0; if(index==0){limit=34;} if((index>=1 && index <=5) || index==7){ limit=3;} if(index==6 || index==8){ limit=4;} return limit;} public void closeDB() throws RecordStoreException {db.closeRS();}//this method destroy the enumeration and close the database }wordRS CLASSimport java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.util.Vector;import javax.microedition.rms.RecordEnumeration;import javax.microedition.rms.RecordStore;import javax.microedition.rms.RecordStoreException;import javax.microedition.rms.RecordStoreNotOpenException;/** * * @author Ed's */public class wordRS { private RecordStore rs; RecordEnumeration re; private Vector suggestions; private Vector suggestionsID; private Vector suggestionsFreq;// private String query; public wordRS() throws RecordStoreException{ rs=RecordStore.openRecordStore("recordStore", true); } public void closeRS() throws RecordStoreException{ try{ re.destroy(); rs.closeRecordStore(); } catch(RecordStoreNotOpenException rsnoe){ rsnoe.printStackTrace(); } } public void addRecord(String newWord) throws RecordStoreException, IOException{ ByteArrayOutputStream BO = new ByteArrayOutputStream(); DataOutputStream DO = new DataOutputStream(BO); try{ DO.writeUTF(newWord); DO.writeInt(1); } catch (IOException ioe){ ioe.printStackTrace(); } rs.addRecord(BO.toByteArray(), 0, BO.toByteArray().length); DO.close(); BO.close(); } public Vector getSuggestion(String query){ try{ MatchFilter filter = new MatchFilter(query); Sorter sort = new Sorter(); re = rs.enumerateRecords(filter, sort, true); ByteArrayInputStream b = null; DataInputStream d = null; String suggestedWord; String suggestedFreq; while(re.hasNextElement()){ byte [] record = re.nextRecord(); String recID = String.valueOf(re.nextRecordId()); b = new ByteArrayInputStream(record); d = new DataInputStream(b); suggestedWord = d.readUTF(); suggestedFreq = String.valueOf(d.readInt()); suggestions.addElement(suggestedWord); //put the word to vector suggestionsID.addElement(recID); //put the rec id to vector suggestionsFreq.addElement(suggestedFreq); } b.close(); d.close(); } catch(RecordStoreException rse){ rse.printStackTrace(); } catch(IOException ioe){ ioe.printStackTrace(); } return suggestions; } public void updateFrequency(int idIndex){ String recID = (String)suggestionsID.elementAt(idIndex); String theWord = (String)suggestions.elementAt(idIndex); String theInt = (String)suggestionsFreq.elementAt(idIndex); ByteArrayOutputStream BO = new ByteArrayOutputStream(); DataOutputStream DO = new DataOutputStream(BO); try{ DO.writeUTF(theWord); DO.writeInt(Integer.parseInt(theInt)+1); try{ rs.addRecord(BO.toByteArray(), 0, BO.toByteArray().length); rs.deleteRecord(Integer.parseInt(recID)); } catch(RecordStoreException e){e.printStackTrace();} DO.close(); BO.close(); } catch (IOException ioe){ ioe.printStackTrace(); } }}