import java.awt.*; import java.applet.*; public class Lexicon extends Applet { protected TextField word_field; protected TextField part_field; protected List my_lexicon; protected Choice choose_speechpart; protected Label info1; protected Label info2; protected Label info3; protected Button butt_add; protected Button butt_edit; protected Button butt_delete; protected boolean word_cond, part_cond, choose_cond; public void init(){ setBackground(Color.white); //init ALL Components //text labels info1 = new Label ( "Enter new word"+" ", Label.CENTER); info2 = new Label ( "Part of Speech: Choose OR Enter ", Label.CENTER ); info3 = new Label ( "HERE YOU CAN CHANGE LEXICON", Label.CENTER ); info3.setForeground(Color.red); //input field for new words and rules word_field=new TextField(10); word_field.setText(""); part_field=new TextField(10); part_field.setText(""); //possible speechparts list choose_speechpart=new Choice(); choose_speechpart.addItem(""); choose_speechpart.addItem("n"); choose_speechpart.addItem("vi"); choose_speechpart.addItem("vt"); choose_speechpart.addItem("det"); choose_speechpart.addItem("adj"); choose_speechpart.addItem("prep"); choose_speechpart.select(""); //buttons butt_add=new Button("Add"); butt_edit=new Button("Edit"); butt_delete=new Button("Delete"); //create list with some lexicon items my_lexicon= new List(12,false); my_lexicon.addItem( (new LexiconItem("tourists", "n")).toString()); my_lexicon.addItem( (new LexiconItem("friends", "n")).toString()); my_lexicon.addItem( (new LexiconItem("men", "n")).toString()); my_lexicon.addItem( (new LexiconItem("ocean", "n")).toString()); my_lexicon.addItem( (new LexiconItem("pleasure", "n")).toString()); my_lexicon.addItem( (new LexiconItem("Egypt", "n")).toString()); my_lexicon.addItem( (new LexiconItem("fish", "n")).toString()); my_lexicon.addItem( (new LexiconItem("fish", "vi")).toString()); my_lexicon.addItem( (new LexiconItem("sleep", "vi")).toString()); my_lexicon.addItem( (new LexiconItem("study", "vt")).toString()); my_lexicon.addItem( (new LexiconItem("visit", "vt")).toString()); my_lexicon.addItem( (new LexiconItem("the", "det")).toString()); my_lexicon.addItem( (new LexiconItem("a", "det")).toString()); my_lexicon.addItem( (new LexiconItem("an", "det")).toString()); my_lexicon.addItem( (new LexiconItem("their", "det")).toString()); my_lexicon.addItem( (new LexiconItem("in", "prep")).toString()); my_lexicon.addItem( (new LexiconItem("with", "prep")).toString()); my_lexicon.addItem( (new LexiconItem("big", "adj")).toString()); my_lexicon.addItem( (new LexiconItem("good", "adj")).toString()); //ORGANIZE LAYOUT !!!!!!!!!!!!!!!!!!!!!!!! GridBagLayout gbl = new GridBagLayout(); GridBagConstraints gbc = new GridBagConstraints(); setLayout(gbl); //Layout manager for upper and bottom panels gbc.gridx=0; gbc.gridy=0; gbc.gridwidth=GridBagConstraints.RELATIVE; // gbc.weightx=2; // gbc.weighty=1; gbc.fill = GridBagConstraints.HORIZONTAL; gbl.setConstraints(info3,gbc); add(info3); //upper panel gbc.gridx=0; gbc.gridy=1; // gbc.weightx=1; // gbc.weighty=1; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.anchor = GridBagConstraints.SOUTH; gbc.gridwidth=GridBagConstraints.RELATIVE; gbl.setConstraints(info1,gbc); add(info1); //upper panel gbc.gridx=0; gbc.gridy=2; // gbc.weightx=1; // gbc.weighty=1; gbc.gridwidth=GridBagConstraints.RELATIVE; gbc.fill = GridBagConstraints.NONE; gbc.anchor = GridBagConstraints.NORTH; gbl.setConstraints(word_field,gbc); add(word_field); //upper panel gbc.gridx=0; gbc.gridy=3; // gbc.weightx=1; // gbc.weighty=1; gbc.gridwidth=GridBagConstraints.RELATIVE; gbc.anchor = GridBagConstraints.SOUTH; gbc.fill = GridBagConstraints.HORIZONTAL; gbl.setConstraints(info2,gbc); add(info2); //upper panel Panel ChoicePanel=new Panel(); gbc.gridx=0; gbc.gridy=4; // gbc.weightx=1; // gbc.weighty=1; gbc.gridwidth=GridBagConstraints.RELATIVE; gbc.gridheight=GridBagConstraints.RELATIVE; gbc.anchor = GridBagConstraints.NORTH; gbc.fill = GridBagConstraints.HORIZONTAL; gbl.setConstraints(ChoicePanel,gbc); add(ChoicePanel); //upper panel ChoicePanel.add(choose_speechpart); ChoicePanel.add(new Label("")); ChoicePanel.add(part_field); Panel ButtPanel=new Panel(); gbc.gridx=0; gbc.gridy=5; // gbc.weightx=1; // gbc.weighty=1; gbc.gridwidth=GridBagConstraints.RELATIVE; gbc.gridheight=GridBagConstraints.REMAINDER; gbl.setConstraints(ButtPanel,gbc); add(ButtPanel); //bottom panel for buttons ButtPanel.add(butt_add); ButtPanel.add(butt_edit); ButtPanel.add(butt_delete); gbc.gridx=1; gbc.gridy=0; gbc.weightx=1; gbc.weighty=1; gbc.fill = GridBagConstraints.BOTH; gbc.gridwidth=GridBagConstraints.REMAINDER; gbc.gridheight=GridBagConstraints.REMAINDER; gbl.setConstraints(my_lexicon,gbc); add(my_lexicon); } //POSSIBLE ACTIONS public boolean action(Event evt, Object whatAction){ if( (evt.target == word_field) || (evt.target == butt_add) || (evt.target == part_field) ){ word_cond=wordOK(); //check whether word is entered part_cond=partOK(); choose_cond=chooseOK(); if(part_cond && choose_cond){ warn_info3(); return true; } if(!part_cond && !choose_cond && !word_cond){ warn_info1(); warn_info2(); return true; } if(!word_cond){ warn_info1(); return true; } if(!part_cond && !choose_cond){ warn_info2(); return true; } if(word_cond && part_cond && !choose_cond){ add_new_item2(); set_init_state(); return true; } if( word_cond && choose_cond && !part_cond){ add_new_item1(); set_init_state(); return true; } return false; }else if((evt.target == butt_delete) && (my_lexicon.getSelectedItem() != null)){ my_lexicon.delItem(my_lexicon.getSelectedIndex()); return true; }else if((evt.target == butt_edit) && (my_lexicon.getSelectedItem() != null)){ //restore word and speechpart and fill word_field and choice_list word_field.setText( (restore_LexItem(my_lexicon.getSelectedItem())).get_word()); choose_speechpart.select( (restore_LexItem(my_lexicon.getSelectedItem()) ).get_speechpart()); my_lexicon.delItem(my_lexicon.getSelectedIndex()); return true; }else return false; } //this method checks the correctness of the lexicon input=word+speechpart private boolean wordOK(){ if( !(word_field.getText().equals("")) ){ info1.setText("Enter new word"+" "); return true; }else{ return false; } } private boolean chooseOK(){ if( !(choose_speechpart.getSelectedItem().equals("")) ){ info2.setText( "Part of Speech: Choose OR Enter"+" "); return true; }else return false; } private boolean partOK(){ if(part_field.getText().equals("")) return false; else{ info2.setText( "Part of Speech: Choose OR Enter"+" "); return true; } } private void warn_info1(){ info1.setText("Enter new word"+"!!!"); } private void warn_info2(){ info2.setText("Part of Speech: Choose OR Enter"+"!!!"); } private void warn_info3(){ info2.setText("Leave ONE part of speech, not BOTH!"); } //return the lexicon input fields to the initial state private void set_init_state(){ word_field.setText(""); choose_speechpart.select(""); part_field.setText(""); word_field.show(); choose_speechpart.show(); part_field.show(); info1.setText("Enter new word"+" "); info2.setText("Part of Speech: Choose OR Enter"+" "); } //add new item=word+speechpart to the lexicon private void add_new_item1(){ my_lexicon.addItem( (new LexiconItem( word_field.getText(), choose_speechpart.getSelectedItem()) ).toString() ); } private void add_new_item2(){ my_lexicon.addItem( (new LexiconItem( word_field.getText(), part_field.getText()) ).toString() ); } //this function creates LexiconItem object from a Lexicon String public LexiconItem restore_LexItem(String word_speechpart){ String word; String speechpart; word_speechpart.trim(); int blank_index=word_speechpart.indexOf(" "); word=word_speechpart.substring(0,blank_index); speechpart=word_speechpart.substring(blank_index, word_speechpart.length()); word=word.trim(); speechpart=speechpart.trim(); LexiconItem restored = new LexiconItem(word, speechpart); return restored; } }