eventhandler.java

这是一个从音频信号里提取特征参量的程序

/*
 * @(#) EventHandler.java  1.10 10/09/02
 *
 * Copyright ***,  All Rights Reserved.
 * 
 * This software is the proprietary information of ********  
 * Use is subject to license terms.
 * 
 */

// import java packages
//
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import java.io.*;
import java.lang.*;
import java.util.*;

/**
 * This class is designed to handle all events of the 
 * .....
 * .....
 * @version 1.00
 */
public class EventHandler implements ActionListener, 
				     MouseListener,
				     MouseMotionListener{

    //-----------------------------------------------------------------
    //
    // static data members
    //
    //-----------------------------------------------------------------

    //-----------------------------------------------------------------
    //
    // instance data members
    //
    //-----------------------------------------------------------------

    /**
     * data member about current status
     */
    protected String curr_am_string_d = CData.AM_NONE;
    public Vertex curr_vertex_focus_d = null;
    public Vertex curr_vertex_copy_d = null;
    public GraphArc curr_arc_focus_d = null;

    public DiGraph curr_graph_copy_d = null;

    /**
     * mouse positions
     */
    protected int mouse_x_d = 0;
    protected int mouse_y_d = 0;

    //-----------------------------------------------------------------
    //
    // static function members
    //
    //-----------------------------------------------------------------

    //-----------------------------------------------------------------
    //
    // instance function members
    //
    //-----------------------------------------------------------------

    /**
     * reset all focus 
     * 
     * @return void
     */
    public void resetFocus() {

	curr_am_string_d = CData.AM_NONE;
	curr_vertex_focus_d = null;
	curr_arc_focus_d = null;
    }

    /**
     * handle the event when a command is issued
     * 
     * @param e the mouse event
     * @return void
     */
    public void actionPerformed(ActionEvent e) {
	
	// check the menu first
	//
	CData.main_frame_d.checkMenu();

	// branches on the action command
	//

	// file menu
	//
	if ( e.getActionCommand().equals(CData.AM_FILE_EXIT) ){
	    curr_am_string_d = CData.AM_FILE_EXIT;
	    fileExit_actionPerformed(e);
	}
	if ( e.getActionCommand().equals(CData.AM_FILE_SAVE) ){
	    curr_am_string_d = CData.AM_FILE_EXIT;
	    CData.store(false);
	}
	if ( e.getActionCommand().equals(CData.AM_FILE_SAVE_AS) ){
	    curr_am_string_d = CData.AM_FILE_EXIT;
	    CData.store(true);
	}
	if ( e.getActionCommand().equals(CData.AM_FILE_SAVE_ALL) ){
	    curr_am_string_d = CData.AM_FILE_EXIT;
	    showSaveAllDlg();
	}
	if ( e.getActionCommand().equals(CData.AM_FILE_OPEN) ){
	    curr_am_string_d = CData.AM_FILE_EXIT;
	    CData.load(false);
	}
	if ( e.getActionCommand().equals(CData.AM_FILE_NEW) ){
	    curr_am_string_d = CData.AM_FILE_EXIT;
	    CData.newModel(true);
	}
	if ( e.getActionCommand().equals(CData.AM_FILE_CLOSE) ){
	    curr_am_string_d = CData.AM_FILE_EXIT;
	    CData.newModel(false);
	}
	if ( e.getActionCommand().equals(CData.AM_HELP_ABOUT) ){
	    curr_am_string_d = CData.AM_HELP_ABOUT;
	    helpAbout_actionPerformed(e);
	}

	// grammar menu
	//
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_INSERT_START) ){
	    if ( CData.curr_graph_d == null )
		return;
	    curr_am_string_d = CData.AM_GRAMMAR_INSERT_START;
	    grammarInsertStart_actionPerformed(e);
	}

	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_INSERT_STOP) ){
	    if ( CData.curr_graph_d == null )
		return;
	    curr_am_string_d = CData.AM_GRAMMAR_INSERT_STOP;
	    grammarInsertStart_actionPerformed(e);
	}

	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_INSERT_NODE) ){
	    if ( CData.curr_graph_d == null )
		return;
	    curr_am_string_d = CData.AM_GRAMMAR_INSERT_NODE;
	    grammarInsertStart_actionPerformed(e);
	}
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_INSERT_ARC) ){
	    curr_am_string_d = CData.AM_GRAMMAR_INSERT_ARC;
	    grammarInsertStart_actionPerformed(e);
	}
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_INSERT_SELF_ARC) ){
	    curr_am_string_d = CData.AM_GRAMMAR_INSERT_SELF_ARC;
	    grammarInsertStart_actionPerformed(e);
	}
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_CUT) ){
	    curr_am_string_d = CData.AM_GRAMMAR_CUT;
	    curr_vertex_copy_d = new Vertex(curr_vertex_focus_d);
	    CData.curr_graph_d.removeVertex(curr_vertex_focus_d);
	    curr_vertex_focus_d = null;
	    curr_am_string_d = CData.AM_NONE;
	}
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_COPY) ){
	    
	    if ( curr_vertex_focus_d == null ){
		return;
	    }
	    curr_am_string_d = CData.AM_GRAMMAR_COPY;
	    curr_vertex_copy_d = new Vertex(curr_vertex_focus_d);
	    curr_am_string_d = CData.AM_NONE;
	}
	// paste a node
	//
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_PASTE) ){
	    if ( curr_vertex_copy_d == null ){
		return;
	    }
	    curr_am_string_d = CData.AM_GRAMMAR_PASTE;
	    //Point location = curr_vertex_copy_d.getVertexLocation();
	    Point location = curr_vertex_copy_d.getLocation();
	    location.x += 15;
	    location.y += 15;
	    Vertex paste_vertex = new Vertex(curr_vertex_copy_d);
	    CData.work_area_d.insertVertexAt( paste_vertex, 
					   location);
	    CData.curr_graph_d.insertVertex(paste_vertex);
	    //curr_vertex_focus_d = null;
	    curr_am_string_d = CData.AM_NONE;
	}
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_DELETE) ){
	    if ( curr_vertex_focus_d != null ){
		CData.curr_graph_d.removeVertex(curr_vertex_focus_d);
	    }
	    if ( curr_arc_focus_d != null ){
		CData.curr_graph_d.removeArc(curr_arc_focus_d);
	    }
	    curr_vertex_focus_d = null;
	    curr_arc_focus_d = null;
	    curr_am_string_d = CData.AM_NONE;
	}
	
	// copy a graph
	//
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_COPY_GRAPH) ){
	    
	    if ( CData.curr_graph_d == null ){
		return;
	    }
	    //System.out.println("copy a graph");
	    curr_graph_copy_d = new DiGraph(CData.curr_graph_d);
	    curr_am_string_d = CData.AM_NONE;
	}

	// paste a graph
	//
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_PASTE_GRAPH) ){
	    if ( curr_graph_copy_d == null ){
		return;
	    }
	    String graph_name = (String) 
		CData.getCurrLevel().graph_names_d.
		get(CData.curr_graph_index_d);

	    //System.out.println("paste a graph");
	    // set current graph
	    //
	    CData.curr_graph_d = new DiGraph(curr_graph_copy_d);
	    CData.getCurrLevel().graphs_d.put(graph_name, CData.curr_graph_d);
	    //curr_vertex_focus_d = null;
	    curr_am_string_d = CData.AM_NONE;
	    CData.main_frame_d.updateAll();
	}

	// weight a graph
	//
	if ( e.getActionCommand().equals(CData.AM_GRAMMAR_WEIGHT_GRAPH) ){
	    if ( CData.curr_graph_d == null ){
		return;
	    }
	    CData.curr_graph_d.resetGraphArcWeight((float)1.0);
	}

	// hiearchy menu
	//
	if ( e.getActionCommand().equals(CData.AM_H_ADD_LEVEL) ){
	    curr_am_string_d = CData.AM_H_ADD_LEVEL;
	    CData.addLevel(CData.search_levels_d.size());
	    curr_am_string_d = CData.AM_NONE;
	    CData.main_frame_d.updateAll();
	}
	if ( e.getActionCommand().equals(CData.AM_H_DELETE_LEVEL) ){
	    CData.search_levels_d.remove(CData.getCurrLevel());
	    CData.main_frame_d.jTabbedPaneLeft.
		removeTabAt(CData.curr_level_index_d);
	    curr_am_string_d = CData.AM_NONE;
	    CData.main_frame_d.updateAll();
	}
	if ( e.getActionCommand().equals(CData.AM_H_CHECK_LEVEL) ){
	    CData.check();
	}
	if ( e.getActionCommand().equals(CData.AM_H_SYMBOLS) ){
	    curr_am_string_d = CData.AM_H_SYMBOLS;
	    hSymbols_actionPerformed(e);
	}
	
	// repaint the work area
	//
	CData.work_area_d.repaint();
	
	CData.removeTempFile();
    }

    /**
     * exit the application
     * 
     * @param e any event
     * @return void
     */
    public void fileExit_actionPerformed(ActionEvent e) {
	System.exit(0);
    }

    /**
     * Help | About action performed
     * 
     * @param e any event
     * @return void
     */
    private void helpAbout_actionPerformed(ActionEvent e) {
	UIMainFrame_AboutBox dlg 
	    = new UIMainFrame_AboutBox( CData.main_frame_d);
	Dimension dlgSize = dlg.getPreferredSize();
	Dimension frmSize = CData.main_frame_d.getSize();
	Point loc = CData.main_frame_d.getLocation();
	dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, 
			(frmSize.height - dlgSize.height) / 2 + loc.y);
	dlg.setModal(true);
	dlg.show();
    }

    /**
     * Hiearchy | Symbols action performed
     * 
     * @param e any event
     * @return void
     */
    private void hSymbols_actionPerformed(ActionEvent e) {

	showSymbolsDlg();
    }

    /**
     * Hiearchy | Symbols action performed
     * 
     * @return void
     */
    public void showSymbolsDlg() {

	UISymbolDialog dlg = null;
	if (CData.symbol_dlg_d == null ){
	    CData.symbol_dlg_d = 
		new UISymbolDialog( CData.main_frame_d, "symbols", false);
	    dlg = CData.symbol_dlg_d;
	    Dimension dlgSize = dlg.getPreferredSize();
	    Dimension frmSize = CData.main_frame_d.getSize();
	    Point loc = CData.main_frame_d.getLocation();
	    dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, 
			    (frmSize.height - dlgSize.height) / 2 + loc.y);
	    dlg.setModal(false);
	
	}

	dlg = CData.symbol_dlg_d;	
	SearchLevel curr_level = CData.getCurrLevel();
	dlg.level_symbols_d = (Vector)curr_level.symbols_d.clone();
	dlg.level_name_d = new String (curr_level.level_name_d);
	dlg.initAll();
	dlg.show();
    }

    /**
     * Hiearchy | Symbols action performed
     * 
     * @return void
     */
    public void showSaveAllDlg() {

	UISaveAllDialog dlg = 
	    new UISaveAllDialog( CData.main_frame_d, "SaveAlls", false);
	Dimension dlgSize = dlg.getPreferredSize();
	Dimension frmSize = CData.main_frame_d.getSize();
	Point loc = CData.main_frame_d.getLocation();
	dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, 
			(frmSize.height - dlgSize.height) / 2 + loc.y);
	dlg.setModal(true);
	dlg.initAll();
	dlg.show();
    }

    /**
     * Grammar | Insert Start
     * 
     * @param e the action event
     * @return void
     */
    private void grammarInsertStart_actionPerformed(ActionEvent e) {
	
	// Create an instance of java.awt.Cursor
	//
	Cursor c = new Cursor ( Cursor.HAND_CURSOR );

	// Set cursor for the work area
	//
	CData.work_area_d.setCursor(c);

	// then waiting for the mouse left-click on the work area
    }

    /**
     * handle the event when mouse is clicked
     * 
     * @param e the mouse event
     * @return void
     */
    public void mouseClicked(MouseEvent e) {

	// declare local variables
	//

	// restore the shape of the mouse
	//
	Cursor c = new Cursor ( Cursor.DEFAULT_CURSOR );
	CData.work_area_d.setCursor(c);
	//System.out.println("mouse clicked");

	// did the user click on the WorkArea with the left mouse button?
	//
	if (e.getSource().getClass().getName().equals("WorkArea")) {
	    //System.out.println("workarea clicked");
	    if (CData.work_area_d.digraph_d == CData.curr_graph_d) {
		if (SwingUtilities.isLeftMouseButton(e)) {
		    workAreaLMClicked(e);
		}
		if (SwingUtilities.isRightMouseButton(e)) {
		    System.out.println(((WorkArea)e.getSource()).
				       digraph_d.vertices_d.size());
		    workAreaRMClicked(e);
		}