source: trunk/EventBenchConsole/src/de/ugoe/cs/eventbench/swt/CommandHistoryDialog.java @ 418

package de.ugoe.cs.eventbench.swt;

import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.LinkedList;

import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.GridData;

import de.ugoe.cs.util.StringTools;
import de.ugoe.cs.util.console.CommandExecuter;
import de.ugoe.cs.util.console.Console;
import de.ugoe.cs.util.console.listener.ICommandListener;

import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;

public class CommandHistoryDialog extends Dialog implements ICommandListener {
        
        protected java.util.List<String> history = new LinkedList<String>();
        
        protected List commandHistoryList;
        protected Shell shell;
        
        boolean isOpen;

        /**
         * Create the dialog.
         * @param parent
         * @param style
         */
        public CommandHistoryDialog(Shell parent, int style) {
                super(parent, style);
                setText("Command History");
                isOpen = false;
                Console.getInstance().registerCommandListener(this);
        }

        /**
         * Open the dialog.
         */
        public void open() {
                createContents();
                shell.open();
                shell.layout();
                isOpen = true;
                Display display = getParent().getDisplay();
                while (!shell.isDisposed()) {
                        if (!display.readAndDispatch()) {
                                display.sleep();
                        }
                }
        }

        /**
         * Create contents of the dialog.
         */
        private void createContents() {
                shell = new Shell(getParent(), SWT.DIALOG_TRIM | SWT.RESIZE);
                shell.addDisposeListener(new DisposeListener() {
                        public void widgetDisposed(DisposeEvent arg0) {
                                isOpen = false;
                        }
                });
                shell.setSize(450, 300);
                shell.setText(getText());
                shell.setLayout(new GridLayout(3, false));
                
                Label lblRecentCommands = new Label(shell, SWT.NONE);
                lblRecentCommands.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 2, 1));
                lblRecentCommands.setText("Recent Commands:");
                new Label(shell, SWT.NONE);
                
                commandHistoryList = new List(shell, SWT.BORDER | SWT.V_SCROLL | SWT.MULTI);
                commandHistoryList.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 3, 1));
                for( String command : history ) {
                        commandHistoryList.add(command);
                }
                
                Button btnExec = new Button(shell, SWT.NONE);
                btnExec.addSelectionListener(new SelectionAdapter() {
                        @Override
                        public void widgetSelected(SelectionEvent e) {
                                for( String command : commandHistoryList.getSelection() ) {
                                        CommandExecuter.getInstance().exec(command);
                                }
                        }
                });
                btnExec.setText("Execute");
                
                Button btnCopyToClipboard = new Button(shell, SWT.NONE);
                btnCopyToClipboard.addSelectionListener(new SelectionAdapter() {
                        @Override
                        public void widgetSelected(SelectionEvent e) {
                                Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
                                StringSelection content = new StringSelection(getSelectedCommands());
                                clipboard.setContents(content, null);
                        }
                });
                btnCopyToClipboard.setText("Copy to Clipboard");
                
                Button btnCreateBatchfile = new Button(shell, SWT.NONE);
                btnCreateBatchfile.addSelectionListener(new SelectionAdapter() {
                        @Override
                        public void widgetSelected(SelectionEvent event) {
                                FileDialog fileDialog = new FileDialog(shell, SWT.SAVE);
                                String filename = fileDialog.open();
                                if( filename!=null ) {
                                        File file = new File(filename);
                                        boolean fileCreated;
                                        try {
                                                fileCreated = file.createNewFile();
                                                if (!fileCreated) {
                                                        Console.traceln("Created batchfile " + filename);
                                                } else {
                                                        Console.traceln("Overwrote file " + filename);
                                                }
                                        } catch (IOException e) {
                                                Console.printerrln("Unable to create file " + filename);
                                                Console.logException(e);
                                        }
                                        OutputStreamWriter writer = null;
                                        try {
                                                writer = new OutputStreamWriter(new FileOutputStream(file), "UTF-8");
                                        } catch (IOException e) {
                                                Console.printerrln("Unable to open file for writing (read-only file):"
                                                                + filename);
                                                Console.logException(e);
                                                return;
                                        }
                                        try {
                                                writer.write(getSelectedCommands());
                                                writer.close();
                                        } catch (IOException e) {
                                                Console.printerrln("Unable to write to file.");
                                                Console.logException(e);
                                        }
                                }
                        }
                });
                btnCreateBatchfile.setText("Create Batchfile");

        }

        @Override
        public void commandNotification(String command) {
                history.add(command);
                if( isOpen ) {
                        commandHistoryList.add(command);
                }
        }
        
        public boolean isOpen() {
                return isOpen;
        }
        
        private String getSelectedCommands() {
                StringBuilder commands = new StringBuilder();
                for( String command : commandHistoryList.getSelection()) {
                        commands.append(command + StringTools.ENDLINE);
                }
                return commands.toString();
        }
}