PopupNavigator
Java Source:
// PopupNavigator - web-site navigation pop-up menu Java applet.
// Copyright © 1999-2000 Branko Dimitrijevic
// bepp@bepp.8m.com
// http://bepp.8m.com
package PopupNavigator;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.StringTokenizer;
import java.net.URL;
import java.net.MalformedURLException;
// TODO: Support for settig predefined cursor or loading
// a cursor from URL.
// TODO: Support for foregraund color, background color,
// icons, foreground and background image.
// TODO: Merge PopupNavigatorMenu and PopupNavigatorMenuItem?
// TODO: Support for system colors.
// TODO: Support for configuration file.
// 1) For menu tree only.
// 2) For everything except menu tree.
// 3) For both 1) and 2).
// TODO: Test when there is too mutch sub-parameters.
class PopupNavigatorMenu extends Menu {
// We don't use Font class because we need to know what values are
// default (null) - after temporary change of font.
public String fontName = null;
public Integer fontStyle = null, fontSize = null;
public PopupNavigatorMenu(String label) {
super(label);
}
}
// We need special class to store URLs.
class PopupNavigatorMenuItem extends MenuItem {
public URL url = null;
// Stores URLs that are in the different domain (to avoid premature DNS lookups).
public String url_string = null;
public String frame = null;
// We don't use Font class becouse we need to know what values are
// default (null) - after temporary change of font.
public String fontName = null;
public Integer fontStyle = null, fontSize = null;
public PopupNavigatorMenuItem(String label) {
super(label);
}
} // PopupNavigatorMenuItem
public class PopupNavigatorApplet extends Applet {
// True if mouse is inside applet.
private boolean mouseIn = false;
private boolean mouseDown = false;
// Maximum number of semicolon-delimited tokens (sub-parameters)
// within single applet parameter value.
private static final short MaxSubParameters = 9;
private static final short MaxMenuDepth = 10;
private char delimiterChar = ';';
private char escapeChar = '\\';
private String URLBase = "CODEBASE";
private String defaultFontName = "Dialog";
private String defaultFontStyle = "PLAIN";
private String defaultFontSize = "12";
private String defaultForegroundColor = "BLACK";
private String defaultBackgroundColor = "LIGHTGRAY";
// We don't use "_self" as default because of posibility to improve
// compatibility with non-frames browsers (HotJava?) by not caling
// frame-enabled showDocumetn(). I don't know if this is effective.
private String defaultFrame = null;
// Selection method constants.
private static final String smRecursive = "RECURSIVE";
private static final String smItem = "ITEM";
private static final String smNone = "NONE";
private String selectionMode = smRecursive;
private String selectionFontName = null;
private String selectionFontStyle = "BOLD";
private String selectionFontSize = null;
private String menuActivation = "CLICK";
private String statusText = null;
private String menuPosition = "BOTTOM";
private String missingURL = "ERROR";
// Used in paint().
private String labelText = null;
private Font labelFont = null;
private Color labelForeground = null;
private Color labelBackground = null;
private String mouseoverLabelText = null;
private Font mouseoverLabelFont = null;
private Color mouseoverLabelForeground = null;
private Color mouseoverLabelBackground = null;
private String clickLabelText = null;
private Font clickLabelFont = null;
private Color clickLabelForeground = null;
private Color clickLabelBackground = null;
// Button style constants.
private static final String bsFlat = "FLAT";
private static final String bsSemiflat = "SEMIFLAT";
private static final String bsNormal = "NORMAL";
// Button hover constants.
private static final String bhHover = "HOVER";
private static final String bhNohover = "NOHOVER";
// ButtonStyle = style;hover.
private String buttonStyle = bsNormal;
private String buttonHover = bhHover; // Mouseover effect.
private Image buttonImage = null;
private Image mouseoverButtonImage = null;
private Image clickButtonImage = null;
private static final String bipAbsolute = "ABSOLUTE";
private static final String bipCenter = "CENTER";
private static final String bipLeft = "LEFT";
private static final String bipRight = "RIGHT";
private static final String bipTop = "TOP";
private static final String bipBottom = "BOTTOM";
private String buttonImagePosition = "ABSOLUTE";
private String buttonImagePositionX = "0";
private String buttonImagePositionY = "0";
private String mouseoverButtonImagePosition = null;
private String mouseoverButtonImagePositionX = null;
private String mouseoverButtonImagePositionY = null;
private String clickButtonImagePosition = null;
private String clickButtonImagePositionX = null;
private String clickButtonImagePositionY = null;
// Last selected menu item. Used to improve compatibility
// with frames. In IE5 this doesn't work.
PopupNavigatorMenuItem oldSelection = null;
// Used in loadMenu(). Not static because of multi-use of the same applet
// in one web page.
short[] paramCoord = new short[MaxMenuDepth];
boolean isStandalone = false;
GridLayout gridLayout1 = new GridLayout();
PopupMenu popupMenu = new PopupMenu();
// Get a parameter value. If parameter is not found, def is returned.
public String getParameter(String key, String def) {
String tmp;
tmp = isStandalone ? System.getProperty(key, def) : getParameter(key);
if (tmp == null)
tmp = def;
if (tmp != null)
tmp = tmp.trim();
return tmp;
}
private Image getImageFromParam(String paramName, Image def) {
String paramValue;
paramValue = getParameter(paramName,null);
if (paramValue == null)
return def;
else if (paramValue.length() == 0)
return null;
else
return getImage(encodeURL(paramValue));
}
// Returns true if url_string references current domain.
// Important to avoid unneccessary DNS lookups.
private boolean isCurrentDomain(final String url_string) {
// url_string can not be local if it contains "://" or begins with "mailto:".
String Url = url_string.trim();
// Strts with "mailto:"?
if (Url.startsWith("mailto:"))
return false;
//for (int i=0; i<Url.length(); ++i) {
// if (
// Url.charAt(i) == ':'
// && i+1 < Url.length()
// && Url.charAt(i+1) == '/'
// && i+2 < Url.length()
// && Url.charAt(i+2) == '/'
// ) {
//} // for search for "://"
//for (int i = 0; i+2 < Url.length(); ++i) {
// if (
// Url.charAt(i) == ':'
// && Url.charAt(i+1) == '/'
// && Url.charAt(i+2) == '/'
// ) {
//} // for search for "://"
// Contains "://"?
int i = Url.indexOf("://");
if (i >= 0) {
// url_string is not local if its beginning is different then
// local protocol + local host.
URL base = getDocumentBase();
String Protocol = base.getProtocol();
if (Protocol.equalsIgnoreCase("mailto"))
Protocol = "mailto:";
else
Protocol = Protocol + "://";
String Host = base.getHost();
return Url.toLowerCase().startsWith((Protocol + Host).toLowerCase());
} // if found "://"
return true;
} // isCurrentDomain()
// Returns URL depending on UrlStr parameter and the URLBase parameter.
private URL encodeURL(String UrlStr) {
URL base;
try {
if (URLBase.equalsIgnoreCase("CODEBASE"))
base = this.getCodeBase();
else if (URLBase.equalsIgnoreCase("DOCUMENT"))
base = this.getDocumentBase();
else
base = new URL(URLBase);
return new URL(base,UrlStr);
}
catch (MalformedURLException x) {
return null;
}
/*
catch (MalformedURLException x) {
if (!hasErrors) {
Tokens[0] = formatErrorLabel(
null,"MALFORMED URL",paramKey.toString(),paramValue);
hasErrors = true;
}
}
*/
}
// Decodes semicolon-delimited 'value' and returns array
// of it's tokens (sub-parameters). StringTokenizer is not
// used becouse we need support for escape character
// (backslash). Named sub-parameters will be implemented
// later. Skipped sub-parameters will be assigned 'Defaults'
// members with same index. If 'Defaults' is null, then
// nulls will be assigned to skipped tokens.
private String[] decodeParamValue(String value, String[] Defaults) throws Exception {
// TODO: Support for named parameters.
String[] Tokens = new String[MaxSubParameters];
int i,currentTokenIndex;
if (Defaults!=null && Defaults.length>MaxSubParameters)
throw(new Exception("PopupNavigatorApplet.decodeParamValue() Defaults out of range."));
StringBuffer currentToken = new StringBuffer();
for (i=0,currentTokenIndex=0; i<value.length(); ++i) {
if (value.charAt(i) == escapeChar) {
++i; // Skipping escape.
if (i<value.length())
currentToken.append(value.charAt(i)); // Adding character after escape.
}
else if (value.charAt(i) == delimiterChar) {
if (currentToken.length() > 0) { // To leave default or null for skipped sub-parameters.
Tokens[currentTokenIndex] = currentToken.toString();
currentToken = new StringBuffer();
}
else if (Defaults!=null && currentTokenIndex<Defaults.length) {
Tokens[currentTokenIndex] = Defaults[currentTokenIndex];
}
++currentTokenIndex;
}
else
currentToken.append(value.charAt(i));
} // for (iterate through 'value')
// Last token doesn't need to finish with ';'.
if (currentToken.length() > 0) // To leave default or null if last sub-parameter is skipped.
Tokens[currentTokenIndex++] = currentToken.toString();
else if (Defaults!=null && currentTokenIndex<Defaults.length) {
Tokens[currentTokenIndex] = Defaults[currentTokenIndex];
++currentTokenIndex;
}
// Applying the rest of defaults.
if (Defaults != null)
while (currentTokenIndex < Defaults.length) {
Tokens[currentTokenIndex] = Defaults[currentTokenIndex];
++currentTokenIndex;
}
return Tokens;
} // decodeParamValue()
// Converts string representation of font style to int (as defined
// in Font class). On failure returns Font.PLAIN - because of
// robustness.
private int strToFontStyle(String style) {
String stylestr = style.toUpperCase();
//if (stylestr.equals("PLAIN"))
// return Font.PLAIN;
//else
if (stylestr.equals("BOLD"))
return Font.BOLD;
else if (stylestr.equals("ITALIC"))
return Font.ITALIC;
else if (stylestr.equals("BOLDITALIC") || stylestr.equals("ITALICBOLD"))
return Font.BOLD + Font.ITALIC;
else
return Font.PLAIN;
} // strToFontStyle
private Color strToColor(String value) throws Exception {
// TODO: Support for system color (CONTROL,...).
Color result = null;
// Named color.
if (Character.isLetter(value.charAt(0))) {
// We don't want to change 'value'.
String tmp = value.trim().toUpperCase(); // trim: doesn't change this - returns new string.
if (tmp.equals("BLACK"))
result = Color.black;
else if (tmp.equals("BLUE"))
result = Color.blue;
else if (tmp.equals("CYAN"))
result = Color.cyan;
else if (tmp.equals("DARKGRAY"))
result = Color.darkGray;
else if (tmp.equals("GRAY"))
result = Color.gray;
else if (tmp.equals("GREEN"))
result = Color.green;
else if (tmp.equals("LIGHTGRAY"))
result = Color.lightGray;
else if (tmp.equals("MAGENTA"))
result = Color.magenta;
else if (tmp.equals("ORANGE"))
result = Color.orange;
else if (tmp.equals("PINK"))
result = Color.pink;
else if (tmp.equals("RED"))
result = Color.red;
else if (tmp.equals("WHITE"))
result = Color.white;
else if (tmp.equals("YELLOW"))
result = Color.yellow;
// TODO: Support for system colors.
} // if named color
// One integer or space-delimited three-integer color.
else {
StringTokenizer st = new StringTokenizer(value," ",false);
Integer r=null,g=null,b=null;
if (st.hasMoreTokens()) {
r = new Integer(st.nextToken());
if (st.hasMoreTokens()) {
g = new Integer(st.nextToken());
if (st.hasMoreTokens())
b = new Integer(st.nextToken());
}
}
else
throw new Exception("PopupNavigator.strToColor() Bad color formatting.");
if (g == null)
result = new Color(r.intValue()); // r contains whole RGB value.
else {
if (b == null) // Error only b has no value.
throw new Exception("PopupNavigator.strToColor() Bad color formatting - blue is missing.");
else // All r, g and b have value.
result = new Color(r.intValue(),g.intValue(),b.intValue());
}
} // else it's number
return result;
} // strToColor()
private boolean strToBoolean(String value) {
if (value.equalsIgnoreCase("TRUE"))
return true;
else
return false;
}
//Construct the applet
public PopupNavigatorApplet() {
}
// Returns Font constructed from begin-th Token (begin, begin+1 and
// begin+2 contains name, style and size of the font).
// If Tokens parameter is not sufficient, default values are used:
// Dialog - PLAIN - 12.
private Font constructFont(String[] Tokens, int begin) {
String name = "Dialog";
int style = Font.PLAIN, size = 12;
if (Tokens != null) {
if (Tokens[begin] != null)
name = Tokens[begin];
if (Tokens[begin+1] != null)
style = strToFontStyle(Tokens[begin+1]);
if (Tokens[begin+2] != null)
size = new Integer(Tokens[begin+2]).intValue();
}
return new Font(name,style,size);
}
private String formatErrorLabel(String label, String msg, String paramKey, String paramValue) {
return
((label == null || label.length()==0) ? "" : label + " ")
+ ((msg == null || msg.length()==0) ? "" : msg + " ")
+ "<PARAM NAME=\""
+ ((paramKey == null) ? "null" : paramKey)
+ "\" VALUE=\""
+ ((paramValue == null) ? "null" : paramValue)
+ "\">";
}
// Visually distinguishes 'item'. Uses applet-level variable
// 'selectionMethod' to determine should it recursively
// distinguish a super-menu.
private void selectItem(MenuItem item, boolean recursive) {
if (item instanceof PopupNavigatorMenuItem) {
PopupNavigatorMenuItem tmpItem = (PopupNavigatorMenuItem)item;
tmpItem.setFont(new Font(
(selectionFontName != null) ? selectionFontName : tmpItem.fontName,
(selectionFontStyle != null) ? strToFontStyle(selectionFontStyle) : tmpItem.fontStyle.intValue(),
(selectionFontSize != null) ? new Integer(selectionFontSize).intValue() : tmpItem.fontSize.intValue()
));
}
else if (item instanceof PopupNavigatorMenu) {
PopupNavigatorMenu tmpMenu = (PopupNavigatorMenu)item;
tmpMenu.setFont(new Font(
(selectionFontName != null) ? selectionFontName : tmpMenu.fontName,
(selectionFontStyle != null) ? strToFontStyle(selectionFontStyle) : tmpMenu.fontStyle.intValue(),
(selectionFontSize != null) ? new Integer(selectionFontSize).intValue() : tmpMenu.fontSize.intValue()
));
}
if (
recursive
&& selectionMode.equalsIgnoreCase(smRecursive)
&& item.getParent() != null
&& item.getParent() instanceof PopupNavigatorMenu
)
selectItem((PopupNavigatorMenu)(item.getParent()),true);
}
// Uses 'selectionMethod' in the same way as selectItem() does.
private void deselectItem(MenuItem item, boolean recursive) {
if (item instanceof PopupNavigatorMenuItem) {
PopupNavigatorMenuItem tmpItem = (PopupNavigatorMenuItem)item;
tmpItem.setFont(new Font(
tmpItem.fontName,
tmpItem.fontStyle.intValue(),
tmpItem.fontSize.intValue()
));
}
else if (item instanceof PopupNavigatorMenu) {
PopupNavigatorMenu tmpMenu = (PopupNavigatorMenu)item;
tmpMenu.setFont(new Font(
tmpMenu.fontName,
tmpMenu.fontStyle.intValue(),
tmpMenu.fontSize.intValue()
));
}
if (
recursive
&& selectionMode.equalsIgnoreCase(smRecursive)
&& item.getParent()!= null
&& item.getParent() instanceof PopupNavigatorMenu
)
deselectItem((PopupNavigatorMenu)(item.getParent()),true);
}
// Recursively loads menu-tree with first 'depth' coordinates
// contained in 'paramCoord' and inserts it as submenu of
// 'baseMenu'. 'depth' actually contains current level of
// recursion.
// Possible return values:
// 0 - No submenu.
// 1 - Submenu without selection.
// 2 - Selected submenu => current item should be also selected.
private int loadMenu(Menu baseMenu, int depth) {
int result = 0;
// Buld non-changing part of parameter key.
StringBuffer paramKeyStart = new StringBuffer();
// Current depth ('depth') is excluded.
for (int i=0; i<depth; ++i) {
paramKeyStart.append(paramCoord[i]);
// Delimiter coordinates in non-changing part.
if (i+1 < depth)
paramKeyStart.append(delimiterChar);
}
// Delimit non-changing and changing part.
if (paramKeyStart.length() > 0)
paramKeyStart.append(delimiterChar);
String paramValue; // Result from getParameter().
// Iterates through 'depth' level.
paramCoord[depth] = 0;
do { // while (paramValue != null);
// Creating parameter key as semicolon-delimited list of coordinates
// of current menu item. For example: "1;5;0". We just need to append
// current depth (contained in 'depth') to precreated non-changing
// part of key.
String paramKey = paramKeyStart.toString() + paramCoord[depth];
// Getting value for current menu item.
paramValue = getParameter(paramKey.toString(),null);
if (paramValue != null) { // Item exists.
if (result==0)
result = 1; // Maybe will be changed to 2.
String[] Tokens;
// To error that occured first.
boolean hasErrors = false;
try {
Tokens = decodeParamValue(paramValue,null);
} // try
catch(Exception x) {
Tokens = new String[MaxSubParameters];
Tokens[0] = x.toString();
//Tokens[0] = formatErrorLabel
// (null,x.getMessage(),paramKey.toString(),paramValue);
hasErrors = true;
}
// Check for submenus.
PopupNavigatorMenu tmpMenu = new PopupNavigatorMenu(paramValue);
int recursiveResult = loadMenu(tmpMenu, depth + 1);
// Has sub-menus.
if (recursiveResult > 0) {
try {
// 0 1 2 3
// Label;FontName;FontStyle;FontSize
// Set font. defaultFontName, defaultFontStyle and defaultFontSize
// are guarantied not to be null.
tmpMenu.fontName = (Tokens[1] != null) ? Tokens[1] : defaultFontName;
tmpMenu.fontStyle = new Integer(strToFontStyle((Tokens[2] != null) ? Tokens[2] : defaultFontStyle));
tmpMenu.fontSize = new Integer((Tokens[3] != null) ? Tokens[3] : defaultFontSize);
// Should we select it?
if (recursiveResult==2) {
selectItem(tmpMenu,false); // 'false' means non-recursive.
result = recursiveResult;
}
else
deselectItem(tmpMenu,false);
}
catch (Exception x) {
Tokens = new String[MaxSubParameters];
//Tokens[0] = x.getMessage();
Tokens[0] = x.toString();
//Tokens[0] = formatErrorLabel
// (null,x.getMessage(),paramKey.toString(),paramValue);
}
// We don't disable it even if it has errors - in order to reach child items.
tmpMenu.setLabel(Tokens[0]);
baseMenu.add(tmpMenu);
} // if has sub-menus
else { // Menu leaf (hasn't sub-menus).
// 0 1 2 3 4 5
// Label;URL;Frame;FontName;FontStyle;FontSize
// No submenus - we need MenuItem instead of Menu.
PopupNavigatorMenuItem tmpMenuItem = new PopupNavigatorMenuItem(paramValue);
try {
// If it's not a separator (has no label or label is
// different from "-"), we need url and frame.
if (Tokens[0]==null || !Tokens[0].equals("-")) {
// Is URL null?
if (Tokens[1] == null) {
if (!hasErrors) {
if (missingURL.equalsIgnoreCase("ERROR")) {
Tokens[0] = formatErrorLabel(
null,"MISSING URL",paramKey.toString(),paramValue);
hasErrors = true;
}
else if (missingURL.equalsIgnoreCase("DISABLE")) {
tmpMenuItem.setEnabled(false);
}
}
}
else {
// PREMATURE DNS lookups!
/*
URL base;
try {
if (URLBase.equalsIgnoreCase("CODEBASE"))
base = this.getCodeBase();
else if (URLBase.equalsIgnoreCase("DOCUMENT"))
base = this.getDocumentBase();
else
base = new URL(URLBase);
tmpMenuItem.url = new URL(base,Tokens[1]);
}
catch (MalformedURLException x) {
if (!hasErrors) {
Tokens[0] = formatErrorLabel(
null,"MALFORMED URL",paramKey.toString(),paramValue);
hasErrors = true;
}
}
*/
if (isCurrentDomain(Tokens[1])) {
tmpMenuItem.url = encodeURL(Tokens[1]);
if (tmpMenuItem.url == null) {
if (!hasErrors) {
Tokens[0] = formatErrorLabel(
null,"MALFORMED URL",paramKey.toString(),paramValue);
hasErrors = true;
}
}
}
else
tmpMenuItem.url_string = Tokens[1];
// Set target frame.
if (Tokens[2]==null)
tmpMenuItem.frame = defaultFrame;
else
tmpMenuItem.frame = Tokens[2];
} // else url isn't null
// If label is omitted, use URL as label. We don't need to check
// for hasErrors because it is false (Tokens[0] wouldn't be null
// otherwise).
if ( /*!hasErrors ||*/ Tokens[0] == null)
Tokens[0] = Tokens[1];
} // if not separator
// Set font. defaultFontName, defaultFontStyle and defaultFontSize
// are guarantied not to be null.
tmpMenuItem.fontName = (Tokens[3] != null) ? Tokens[3] : defaultFontName;
tmpMenuItem.fontStyle = new Integer(strToFontStyle((Tokens[4] != null) ? Tokens[4] : defaultFontStyle));
tmpMenuItem.fontSize = new Integer((Tokens[5] != null) ? Tokens[5] : defaultFontSize);
// Should we select item?
if (
(selectionMode.equalsIgnoreCase(smRecursive) || selectionMode.equalsIgnoreCase(smItem))
&& tmpMenuItem.url != null
&& tmpMenuItem.url.equals(getDocumentBase())
/*
&& tmpMenuItem.url_string != null
&& sameAsDocumentBase(tmpMenuItem.url_string)
*/
) {
selectItem(tmpMenuItem,false);
if (selectionMode.equalsIgnoreCase(smRecursive))
result = 2;
}
else
deselectItem(tmpMenuItem,false);
}
catch (Exception x) {
Tokens = new String[MaxSubParameters];
//Tokens[0] = x.getMessage();
Tokens[0] = x.toString();
//Tokens[0] = formatErrorLabel
// (null,x.getMessage(),paramKey.toString(),paramValue);
hasErrors = true;
}
tmpMenuItem.setLabel(Tokens[0]);
if (hasErrors)
tmpMenuItem.setEnabled(false);
baseMenu.add(tmpMenuItem);
} // else add menu leaf
++paramCoord[depth];
} // if (paramValue != null)
} while (paramValue != null);
return result;
} // loadMenu()
/*
// Invalid due Java's stupid parameter passing.
private void loadLabel(
String ParamName,
String[] Default,
String T,
Font F,
Color Fg,
Color Bg
) throws Exception {
String[] Tokens = decodeParamValue(getParameter("Label", ""),Default);
T = Tokens[0];
F = constructFont(Tokens,1); // Font is constructed from tokens: 1 (name), 2 (style) and 3 (size).
Fg = strToColor(Tokens[4]);
Bg = strToColor(Tokens[5]);
}
*/
// Initialize the applet.
public void init() {
try {
jbInit();
delimiterChar = getParameter("DelimiterChar", "" + delimiterChar).charAt(0);
escapeChar = getParameter("EscapeChar", "" + escapeChar).charAt(0);
URLBase = getParameter("URLBase",URLBase);
defaultFontName = getParameter("DefaultFontName", defaultFontName);
defaultFontStyle = getParameter("DefaultFontStyle", defaultFontStyle);
defaultFontSize = getParameter("DefaultFontSize", defaultFontSize);
defaultForegroundColor = getParameter("DefaultForegroundColor", defaultForegroundColor);
defaultFrame = getParameter("DefaultFrame");
String[] Tokens;
// Setup button appearance.
Tokens = decodeParamValue(
getParameter("Label", ""),
new String[] {null,defaultFontName,defaultFontStyle,
defaultFontSize,defaultForegroundColor,defaultBackgroundColor}
);
if (Tokens[0] == null) {
if (getParameter("Label",null) == null)
Tokens[0] = "Navigate";
else
Tokens[0] = "";
}
labelText = Tokens[0];
labelFont = constructFont(Tokens,1); // Font is constructed from tokens: 1 (name), 2 (style) and 3 (size).
labelForeground = strToColor(Tokens[4]);
labelBackground = strToColor(Tokens[5]);
Tokens = decodeParamValue(
getParameter("MouseoverLabel", ""),
Tokens
);
mouseoverLabelText = Tokens[0];
mouseoverLabelFont = constructFont(Tokens,1); // Font is constructed from tokens: 1 (name), 2 (style) and 3 (size).
mouseoverLabelForeground = strToColor(Tokens[4]);
mouseoverLabelBackground = strToColor(Tokens[5]);
Tokens = decodeParamValue(
getParameter("ClickLabel", ""),
Tokens
);
clickLabelText = Tokens[0];
clickLabelFont = constructFont(Tokens,1); // Font is constructed from tokens: 1 (name), 2 (style) and 3 (size).
clickLabelForeground = strToColor(Tokens[4]);
clickLabelBackground = strToColor(Tokens[5]);
// Mouseover (hover) effect.
Tokens = decodeParamValue(
getParameter("ButtonStyle", ""),
new String[] {buttonStyle,buttonHover}
);
buttonStyle = Tokens[0];
buttonHover = Tokens[1];
// Selection distinguishing.
Tokens = decodeParamValue(
getParameter("Selection", ""),
new String[] {selectionMode,selectionFontName,selectionFontStyle,selectionFontSize}
);
selectionMode = Tokens[0];
selectionFontName = Tokens[1];
selectionFontStyle = Tokens[2];
selectionFontSize = Tokens[3];
menuActivation = getParameter("MenuActivation",menuActivation);
// TODO: Show URL in status-bar.
statusText = getParameter("StatusText",statusText);
menuPosition = getParameter("MenuPosition",menuPosition);
missingURL = getParameter("MissingURL",missingURL);
// Load button images.
buttonImage = getImageFromParam("Image",null);
mouseoverButtonImage = getImageFromParam("MouseoverImage",buttonImage);
clickButtonImage = getImageFromParam("ClickImage",mouseoverButtonImage);
// Load button image positions.
Tokens = decodeParamValue(
getParameter("ImagePosition", ""),
new String[] {buttonImagePosition,buttonImagePositionX,buttonImagePositionY}
);
buttonImagePosition = Tokens[0];
buttonImagePositionX = Tokens[1];
buttonImagePositionY = Tokens[2];
Tokens = decodeParamValue(
getParameter("MouseoverImagePosition", ""),
Tokens
);
mouseoverButtonImagePosition = Tokens[0];
mouseoverButtonImagePositionX = Tokens[1];
mouseoverButtonImagePositionY = Tokens[2];
Tokens = decodeParamValue(
getParameter("ClickImagePosition", ""),
Tokens
);
clickButtonImagePosition = Tokens[0];
clickButtonImagePositionX = Tokens[1];
clickButtonImagePositionY = Tokens[2];
//buttonImagePosition = getParameter("ImagePosition",buttonImagePosition);
//mouseoverButtonImagePosition = getParameter("MouseoverImagePosition",mouseoverButtonImagePosition);
//clickButtonImagePosition = getParameter("ClickImagePosition",clickButtonImagePosition);
//buttonImage = getImageFromParam("ButtonImage");
//buttonHoverImage = getImageFromParam("ButtonHoverImage");
//buttonDownImage = getImageFromParam("ButtonDownImage");
// Load menu.
loadMenu(popupMenu,0);
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
}
catch (Exception e) {
e.printStackTrace();
}
}
// Component initialization.
private void jbInit() throws Exception {
this.setLayout(gridLayout1);
//menuButton.setLabel("MenuButton");
/*
menuButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
menuButton_actionPerformed(e);
}
});
*/
//this.setSize(400,300);
//this.setSize(MenuButton.getBounds().width+2,MenuButton.getBounds().height+2);
//menuButton.requestFocus();
//this.add(menuButton, null);
this.add(popupMenu);
}
public void showPopupMenu() {
int x,y;
if (menuPosition.equalsIgnoreCase("RIGHT")) {
//x = menuButton.getBounds().width;
x = getBounds().width;
y = 0;
}
else { //if menuPosition.equalsIgnoreCase("BOTTOM")
x = 0;
//y = menuButton.getBounds().height;
y = getBounds().height;
}
//popupMenu.show(menuButton,x,y);
popupMenu.show(this,x,y);
}
public boolean action(Event evt, Object arg) {
//if (evt.target instanceof Button)
// showPopupMenu();
//if (evt.target instanceof Applet)
// showPopupMenu();
//else
if (evt.target instanceof PopupNavigatorMenuItem) {
PopupNavigatorMenuItem source = (PopupNavigatorMenuItem)(evt.target);
switch(evt.id) {
case Event.ACTION_EVENT:
navigate(source);
return true;
//break;
// PopupMenu currently doesn't support mouse events.
//case Event.MOUSE_ENTER:
// showStatus(source.url.toString());
// break;
default:
return false;
}
}
return false;
// Because of stupid compiler.
//return true;
}
protected void processMouseEvent(MouseEvent e) {
super.processMouseEvent(e);
switch (e.getID()) {
case MouseEvent.MOUSE_ENTERED:
mouseIn = true;
if (statusText != null)
showStatus(statusText);
if (menuActivation.equalsIgnoreCase("MOUSEOVER"))
showPopupMenu();
// TODO: Check is repainting is necessary.
repaint();
break;
case MouseEvent.MOUSE_EXITED:
if (statusText != null)
showStatus("");
//mouseDown = false;
mouseIn = false;
repaint();
break;
case MouseEvent.MOUSE_PRESSED:
mouseDown = true; // mouseIn is irelevant.
repaint();
break;
case MouseEvent.MOUSE_RELEASED:
mouseDown = false; // mouseIn is irelevant.
if (
e.getX() >= getBounds().x
&& e.getY() >= getBounds().y
&& e.getX() <= getBounds().x + getBounds().width
&& e.getY() <= getBounds().y + getBounds().height
)
showPopupMenu();
else
mouseIn = false; // Some browsers could avoid delivering MOUSE_EXITED event.
repaint();
break;
case MouseEvent.MOUSE_CLICKED:
break;
}
}
//Get Applet information
public String getAppletInfo() {
return "PopupNavigatorApplet by Branko Dimitrijevic";
}
//Get parameter info
//public String[][] getParameterInfo() {
// return null;
//}
//void menuButton_actionPerformed(ActionEvent e) {
// popupMenu.show(menuButton,0,menuButton.getBounds().height);
//}
private void navigate(PopupNavigatorMenuItem item) {
if (selectionMode.equalsIgnoreCase(smRecursive)) {
if (oldSelection != null)
deselectItem(oldSelection,true);
oldSelection = item;
selectItem(item,true);
}
else if (selectionMode.equalsIgnoreCase(smItem)) {
if (oldSelection != null)
deselectItem(oldSelection,false);
oldSelection = item;
selectItem(item,false);
}
if (item.url == null)
item.url = encodeURL(item.url_string);
if (item.frame == null)
getAppletContext().showDocument(item.url);
else
getAppletContext().showDocument(item.url,item.frame);
} // navigate()
//void onNavigationStart(ActionEvent e) {
// PopupNavigatorMenuItem source = (PopupNavigatorMenuItem)(e.getSource());
// navigate(source);
//}
//private void paintImage(Graphics g, Image img, String pos, String posX, String posY) {
// if buttonImagePosition.equalsIgnoreCase(bipAbsolute)
// g.drawImage(
// img,
// new Integer(posX).intValue(),
// new Integer(posY).intValue(),
// this
// );
//}
// Paints label.
private void paintLabelAndImage(
Graphics g,
Color background,
Color foreground,
Font f,
String text,
Image img,
String pos, // ABSOLUTE, CENTER, RIGHT,...
String posX,
String posY
) {
// Draw background.
g.setColor(background);
g.fillRect(0,0,getBounds().width,getBounds().height);
g.setFont(f);
FontMetrics FM = g.getFontMetrics(g.getFont());
int appletWidth = getBounds().width;
int appletHeight = getBounds().height;
// TODO: Label position.
// Calculate label coordinates.
int labelWidth;
if (text == null)
labelWidth = 0;
else
labelWidth = FM.stringWidth(text);
int labelX = (appletWidth - labelWidth) / 2;
int labelY = (appletHeight - FM.getDescent() + FM.getAscent()) / 2;
// Calculate image, possibly change label coordinates and draw image.
if (img != null) {
int imageWidth = img.getWidth(this);
int imageHeight = img.getHeight(this);
// Image loaded?
if (imageWidth > 0 && imageHeight > 0) {
int imageX,imageY;
if (pos.equalsIgnoreCase(bipAbsolute)) {
imageX = new Integer(posX).intValue();
if (imageX < 0)
imageX = appletWidth + imageX - imageWidth;
imageY = new Integer(posY).intValue();
if (imageY < 0)
imageY = appletHeight + imageY - imageHeight;
}
else if (pos.equalsIgnoreCase(bipCenter)) {
imageX = (appletWidth - imageWidth) / 2;
imageY = (appletHeight - imageHeight) / 2;
}
else if (pos.equalsIgnoreCase(bipLeft) || pos.equalsIgnoreCase(bipRight)) {
int a = new Integer(posX).intValue();
if (pos.equalsIgnoreCase(bipLeft)) {
labelX += a/2;
imageX = labelX - a - imageWidth;
}
else { // pos.equalsIgnoreCase(bipRight)
labelX -= a/2;
imageX = labelX + labelWidth + a;
}
imageY = (appletHeight - imageHeight) / 2;
}
else if (pos.equalsIgnoreCase(bipTop) || pos.equalsIgnoreCase(bipBottom)) {
int a = new Integer(posX).intValue();
if (pos.equalsIgnoreCase(bipTop)) {
labelY += a/2 ;
imageY = labelY - FM.getAscent() - a - imageHeight;
}
else { //pos.equalsIgnoreCase(bipTop);
labelY -= a/2;
imageY = labelY + FM.getDescent() + a;
}
imageX = (appletWidth - imageWidth) / 2;
}
else { // For robustness.
imageX = 0;
imageY = 0;
}
// Draw image.
g.drawImage(img,imageX,imageY,this);
} // if image loaded
} // if (img != null)
// Draw label.
if (text != null) {
g.setColor(foreground);
g.drawString(
text,
labelX,
labelY
);
}
}
private void paint3dRect(
Graphics g,
int x,
int y,
int w,
int h,
Color C1, // Light color.
Color C2, // Dark color.
boolean raised
) {
if (!raised) {
Color Tmp = C1;
C1 = C2;
C2 = Tmp;
}
g.setColor(C1);
g.drawLine(x,y,w,y);
g.drawLine(x,y,x,h);
g.setColor(C2);
g.drawLine(w,y,w,h);
g.drawLine(x,h,w,h);
}
private void paintThinBorder(Graphics g, boolean raised) {
paint3dRect(
g,
0,
0,
getBounds().width - 1,
getBounds().height - 1,
Color.white,
Color.gray,
raised
);
}
private void paintNormalBorder(Graphics g, boolean raised) {
paint3dRect(
g,
1,
1,
getBounds().width - 2,
getBounds().height - 2,
Color.lightGray,
Color.gray,
raised
);
paint3dRect(
g,
0,
0,
getBounds().width - 1,
getBounds().height - 1,
Color.white,
Color.darkGray,
raised
);
}
private void paintThickBorder(Graphics g, boolean raised) {
paint3dRect(
g,
2,
2,
getBounds().width - 3,
getBounds().height - 3,
Color.lightGray,
Color.gray,
raised
);
paint3dRect(
g,
1,
1,
getBounds().width - 2,
getBounds().height - 2,
Color.white,
Color.darkGray,
raised
);
g.setColor(Color.black);
g.drawRect(0,0,getBounds().width-1,getBounds().height-1);
}
private void paintButtonBorder(Graphics g, boolean raised) {
if (buttonStyle.equalsIgnoreCase(bsSemiflat))
paintThinBorder(g,raised);
else if (buttonStyle.equalsIgnoreCase(bsNormal))
paintNormalBorder(g,raised);
}
private void paintHoverBorder(Graphics g, boolean raised) {
if (buttonStyle.equalsIgnoreCase(bsFlat))
paintThinBorder(g,raised);
else if (buttonStyle.equalsIgnoreCase(bsSemiflat))
paintNormalBorder(g,raised);
else if (buttonStyle.equalsIgnoreCase(bsNormal))
paintThickBorder(g,raised);
}
// TODO: Support for oval button border.
public void paint(Graphics g) {
//g.drawLine(1,1,10,10);
//g.drawString("history", 10, 10);
// Draw background.
//g.setColor(labelBackground);
//g.fillRect(0,0,getBounds().width,getBounds().height);
// Draw label.
//g.setFont(labelFont);
//g.setColor(labelForeground);
//FontMetrics FM = g.getFontMetrics(g.getFont());
//g.drawString(
// labelText,
// (getBounds().width - FM.stringWidth(labelText)) / 2,
// (getBounds().height - FM.getDescent() + FM.getAscent()) / 2
//);
// Draw border.
if (mouseDown) {
paintLabelAndImage(
g,clickLabelBackground,clickLabelForeground,clickLabelFont,clickLabelText,
clickButtonImage,clickButtonImagePosition,clickButtonImagePositionX,clickButtonImagePositionY
);
if (buttonHover.equalsIgnoreCase(bhHover))
paintHoverBorder(g,false);
else
paintButtonBorder(g,false);
}
else if (mouseIn) {
paintLabelAndImage(
g,mouseoverLabelBackground,mouseoverLabelForeground,mouseoverLabelFont,mouseoverLabelText,
mouseoverButtonImage,mouseoverButtonImagePosition,mouseoverButtonImagePositionX,mouseoverButtonImagePositionY
);
if (buttonHover.equalsIgnoreCase(bhHover))
paintHoverBorder(g,true);
else
paintButtonBorder(g,true);
}
else {
paintLabelAndImage(
g,labelBackground,labelForeground,labelFont,labelText,
buttonImage,buttonImagePosition,buttonImagePositionX,buttonImagePositionY
);
paintButtonBorder(g,true);
}
//paintThickBorder(g,!mouseDown);
//paintImage(g,buttonImage,buttonImagePosition,buttonImagePositionX,buttonImagePositionY);
} // paint
} // SiteMenuBarApplet
Back to PopupNavigator
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