Application: gvSIG desktop » gvSIG scripting

package org.gvsig.scripting.swing.impl.composer;

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.Label;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.awt.event.WindowEvent;

import java.awt.event.WindowFocusListener;

import java.sql.Savepoint;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Set;

import javax.swing.DefaultListModel;

import javax.swing.JEditorPane;

import javax.swing.JFrame;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTabbedPane;

import javax.swing.JViewport;

import javax.swing.ListSelectionModel;

import javax.swing.event.CaretEvent;

import javax.swing.event.CaretListener;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

import javax.swing.text.BadLocationException;

import org.gvsig.scripting.ScriptingManager;

import org.gvsig.scripting.ScriptingScript;

import org.gvsig.scripting.ScriptingHelpManager.ScriptingHelpClass;

import org.gvsig.scripting.ScriptingHelpManager.ScriptingHelpMethod;

import org.gvsig.scripting.swing.api.ScriptingUIManager;

import org.gvsig.scripting.swing.impl.JDialog;

import org.gvsig.scripting.swing.impl.composer.DefaultJCodeEditor.EditorActionEvent;

public class EditorHelper {

        JEditorPane editorPanel;

        private ScriptingUIManager uimanager;

        protected ActionListener defaultActionlistener = null;

        private ScriptingScript script;

        EditorHelper(ScriptingUIManager uimanager, ScriptingScript script){

                this.uimanager=uimanager;

                this.script=script;

        }

        public String getText(){

                return editorPanel.getText();

        }

        public JEditorPane getJEditorPanel(){

                return this.editorPanel;

        }

        public void addDefaultActionListener(ActionListener actionlistener) {

                this.defaultActionlistener = actionlistener;  

        }

        public JPanel getPropertiesPanel(){

                return new JPropertiesScript(this.script);

        }        

        protected JPanel getCodePanel(){

                JPanel panel = new JPanel();

                panel.setLayout( new BorderLayout() );

                editorPanel = uimanager.createSyntaxHighlightingPanel();

                editorPanel.setContentType("text/"+ script.getLangName());

                editorPanel.setText(script.getCode());

                editorPanel.addCaretListener(new CaretListener()

                {

                        public void caretUpdate(CaretEvent e)

                        {

                                int lineNumber = 1;

                                int columnNumber = 0;

                                int currentPosition = editorPanel.getCaretPosition();

                                try

                                {

                                        String strText = editorPanel.getDocument().getText(0, currentPosition);

                                        char arrText[] = strText.toCharArray();

                                        for(int i=0; i<strText.length(); i++)

                                        {

                                                if(arrText[i] == '\n') lineNumber++;

                                        }

                                        columnNumber = currentPosition - strText.lastIndexOf('\n');

                                }

                                catch(BadLocationException ble)

                                {

                                        System.err.println(ble);

                                }

                                launchException(this,1,"position",lineNumber,columnNumber);

                        }

                });

                editorPanel.addKeyListener(new MyKeyListener(this));

                panel.add(new JScrollPane(editorPanel),BorderLayout.CENTER);

                panel.setVisible(true);

                return panel;

        }

        public void launchException(CaretListener listener, int excId, String command, int lineNumber, int columnNumber){

                this.defaultActionlistener.actionPerformed(

                                new EditorActionEvent(listener, excId, command, lineNumber, columnNumber));

        }

        public void getSuggestions(final JEditorPane editor,final String text) {

                HashMap methods = (HashMap) uimanager.getManager().getHelpManager().findMethods(text);

                final JFrame popupWindow = new JFrame("Suggestions Window");

        popupWindow.addWindowFocusListener(new WindowFocusListener() {

            public void windowGainedFocus(WindowEvent e) {

            }

            public void windowLostFocus(WindowEvent e) {

                     popupWindow.setVisible(false);

            }

        });

                ListSelectionListener menuListener = new ListSelectionListener() {

                        public void valueChanged(ListSelectionEvent arg0) {

                                if(arg0.getValueIsAdjusting()){

                                        String[] s = ((JList)arg0.getSource()).getSelectedValue().toString().split(" - ");

                                        String selection = "";

                                        if(s.length==1){

                                                selection = s[0];

                                        }else{

                                                for(int i=0;i<s.length-1;i++){

                                                        selection=selection+s[i];

                                                }

                                        }

                                        editor.select(editor.getCaretPosition()-text.length(), editor.getCaretPosition());

                                        editor.replaceSelection(selection);

                                        popupWindow.setVisible(false);

                                }

                        }

                };

                DefaultListModel listModel = new DefaultListModel();

                for(int x=0;x<methods.size();x++){

                        Set keys = methods.keySet();

                        Object[] l = keys.toArray();

                        ScriptingHelpMethod helpMethod = (ScriptingHelpMethod) methods.get(l[x]);

                        Iterator it = helpMethod.iterator();

                        while(it.hasNext()){

                                ScriptingHelpClass cn = (ScriptingHelpClass)it.next();

                                listModel.addElement(helpMethod.getName()+" - "+cn.getName());                                

                        }

                }

                JList list = new JList(listModel);

                list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

                list.setLayoutOrientation(JList.VERTICAL);

                list.setVisibleRowCount(0);

                list.addListSelectionListener(menuListener);

                JScrollPane scroll = new JScrollPane(list);

                popupWindow.setUndecorated(true);

                popupWindow.setLayout(new BorderLayout());

                if(listModel.getSize()==0){

                        popupWindow.setSize(new Dimension(300, 50));

                        JScrollPane s = new JScrollPane(new Label("No suggestions availables to the text '"+text+"'."));

                        popupWindow.add(s, BorderLayout.CENTER);

                }else{

                        popupWindow.setSize(new Dimension(300, 200));

                        popupWindow.add(scroll, BorderLayout.CENTER);

                }

                popupWindow.setLocation((editor.getLocationOnScreen().x+editor.getCaret().getMagicCaretPosition().x+3), (editor.getLocationOnScreen().y+editor.getCaret().getMagicCaretPosition().y+5));

                popupWindow.setVisible(true);

        }

        public void getHelpPopup(final JEditorPane editor,final String text){

                new JDialog(uimanager, "help-browser","Select JavaDoc","Select the JavaDoc that you want to see",new JHelpSelection(uimanager,text));

        }

        public void saveScript(JPropertiesScript properties){

                if(properties!=null){

                        script.setName(properties.name.getText());

                        script.setDescription(properties.description.getText());

                        script.setCreatedBy(properties.createdBy.getText());

                        script.setVersion(properties.version.getText());

                        script.setCode(this.getText());

                        script.save();

                }

        }

        public static class MyKeyListener implements KeyListener{

                private EditorHelper editorHelper;

                MyKeyListener(EditorHelper editorHelper){

                        this.editorHelper = editorHelper;

                }

                public void keyPressed(KeyEvent arg0) {

                        // TODO Auto-generated method stub

                        JEditorPane jeditorpane = ((JEditorPane)arg0.getSource());

                        //Obtenemos la selección con jeditorpane.getSelectedText()

                        //Mostramos el PopUp con las opciones que deseemos

                        int keyPressed = arg0.getKeyCode();

                        int modifier = arg0.getModifiers();

                        if(keyPressed==KeyEvent.VK_SPACE && modifier==KeyEvent.CTRL_MASK){

                                String code = jeditorpane.getText();

                                code = code.substring(0, jeditorpane.getCaretPosition());

                                String[] textSelected = code.split("[^0-9a-zA-Z]");

                                editorHelper.getSuggestions(jeditorpane, textSelected[textSelected.length-1]);

                        }else{

                                if(keyPressed==KeyEvent.VK_F1){

                                        String code = jeditorpane.getText();

                                        code = code.substring(0, jeditorpane.getCaretPosition());

                                        String[] textSelected = code.split("[^0-9a-zA-Z]");

                                        editorHelper.getHelpPopup(jeditorpane, textSelected[textSelected.length-1]);

                                }else{

                                        JEditorPane jEditor = (JEditorPane)arg0.getSource();

                                        JViewport jView = (JViewport)jEditor.getParent();

                                        JScrollPane jScroll = (JScrollPane)jView.getParent();

                                        JPanel panel = (JPanel)jScroll.getParent();

                                        JTabbedPane tabsCode = (JTabbedPane)panel.getParent();

                                        DefaultJCodeEditor jCode = (DefaultJCodeEditor)tabsCode.getParent();

                                        if(keyPressed==KeyEvent.VK_F5){

                                                jCode.getScript().run();

                                        }else{

                                                if(keyPressed==KeyEvent.VK_S && modifier==KeyEvent.CTRL_MASK){

                                                        JTabbedPane tabs = (JTabbedPane)jCode.getParent();

                                                        int pestana = tabs.getSelectedIndex();

                                                        String title = tabs.getTitleAt(pestana);

                                                        if (!jCode.getScript().isSaved()){

                                                                if(title.charAt(0)=='*' && title.length()>1){

                                                                        tabs.setTitleAt(pestana, title.substring(1));

                                                                }

                                                                jCode.save();

                                                        }

                                                }

                                        }

                                }

                        }

                }

                public void keyReleased(KeyEvent arg0) {

                        // TODO Auto-generated method stub

                }

                public void keyTyped(KeyEvent arg0) {

                        int keyPressed = arg0.getKeyChar();

                        int modifier = arg0.getModifiers();

                        if(modifier==0){

                                JEditorPane jEditor = (JEditorPane)arg0.getSource();

                                JViewport jView = (JViewport)jEditor.getParent();

                                JScrollPane jScroll = (JScrollPane)jView.getParent();

                                JPanel panel = (JPanel)jScroll.getParent();

                                JTabbedPane tabsCode = (JTabbedPane)panel.getParent();

                                DefaultJCodeEditor jCode = (DefaultJCodeEditor)tabsCode.getParent();

                                JTabbedPane tabs = (JTabbedPane)jCode.getParent();

                                int pestana = tabs.getSelectedIndex();

                                String title = tabs.getTitleAt(pestana);

                                if (jCode.getScript().isSaved()){

                                        tabs.setTitleAt(pestana, "*"+title);

                                        jCode.getScript().setSaved(false);

                                }

                                if(keyPressed==KeyEvent.VK_ENTER){

                                        String text = jEditor.getText();

                                        text = text.substring(0, jEditor.getCaretPosition());

                                        String[] lines = text.split("\n");

                                        String lastLine="";

                                        if(lines.length>1){

                                                lastLine=lines[lines.length-1];

                                        }else{

                                                lastLine = text;

                                        }

                                        int i=0;

                                        String s = "";

                                        while(i<lastLine.length() && lastLine.charAt(i)==KeyEvent.VK_SPACE){

                                                i++;

                                                s=s+" ";

                                        }

                                        jEditor.select(jEditor.getCaretPosition(),jEditor.getCaretPosition());

                                        jEditor.replaceSelection(s);

                                }

                        }

                }

        }

        public ScriptingManager getManager() {

                return this.uimanager.getManager();

        }

        public ScriptingUIManager getUIManager() {

                return this.uimanager;

        }

}