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This the original Stanford Karel for Java, packaged for Maven. ACM Library is included. See also https://cs.stanford.edu/people/eroberts/karel-the-robot-learns-java.pdf
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/*
* @(#)IODialog.java 1.99.1 08/12/08
*/
// ************************************************************************
// * Copyright (c) 2008 by the Association for Computing Machinery *
// * *
// * The Java Task Force seeks to impose few restrictions on the use of *
// * these packages so that users have as much freedom as possible to *
// * use this software in constructive ways and can make the benefits of *
// * that work available to others. In view of the legal complexities *
// * of software development, however, it is essential for the ACM to *
// * maintain its copyright to guard against attempts by others to *
// * claim ownership rights. The full text of the JTF Software License *
// * is available at the following URL: *
// * *
// * http://www.acm.org/jtf/jtf-software-license.pdf *
// * *
// ************************************************************************
package acm.io;
import acm.util.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.reflect.*;
import java.util.*;
import javax.swing.*;
/* Class: IODialog */
/**
* The IODialog class provides a simple, dialog-based mechanism
* for interacting with the user. It is therefore similar to the
* JOptionPane facility in Swing (which it uses in the implementation).
* The differences between the models are
*
*
* - The
IODialog mechanism is considerably simpler, mostly
* because it does not try to be as general.
* - The
IODialog mechanism does not use static methods; clients
* instantiate an IODialog object and make calls on that object,
* thereby emphasizing the object-oriented idea.
* - The
IODialog class works even if Swing is not available.
*
*
* The input methods available for IODialog are intentionally the
* same as those for the IOConsole class so
* that clients can substitute one model for another without making source changes.
* The input methods are therefore
*
*
* readInt
* readDouble
* readBoolean
* readLine
*
*
* For example, the following code pops up a dialog box and
* allows the user to enter an integer:
*
*
* IODialog dialog = new IODialog();
* int n = dialog.readInt("Enter an integer: ");
*
*/
public class IODialog implements IOModel {
/* Constructor: IODialog() */
/**
* Instantiates a new IODialog object that can then be used for dialog-based
* input and output.
*
* Example: dialog = new IODialog();
*/
public IODialog() {
this(null);
}
/* Constructor: IODialog(owner) */
/**
* Instantiates a new IODialog object that can then be used for dialog-based
* input and output.
*
* Example: dialog = new IODialog(owner);
* @param owner A Component used as the owner of created dialogs
*/
public IODialog(Component owner) {
myComponent = owner;
model = createModel();
outputLine = "";
exceptionOnError = false;
allowCancel = false;
}
/* Method: print(value) */
/**
* Displays the argument value, allowing for the possibility of more
* output in the same dialog. The print method is overloaded
* so that value can be of any type.
*
* Example: dialog.print(value);
* @param value The value to be displayed
*/
public void print(String value) {
outputLine += value;
}
/**
* Makes sure that print can display a boolean.
*
*/
public final void print(boolean x) {
print("" + x);
}
/**
* Makes sure that print can display a char.
*
*/
public final void print(char x) {
print("" + x);
}
/**
* Makes sure that print can display a double.
*
*/
public final void print(double x) {
print("" + x);
}
/**
* Makes sure that print can display a float.
*
*/
public final void print(float x) {
print("" + x);
}
/**
* Makes sure that print can display an int.
*
*/
public final void print(int x) {
print("" + x);
}
/**
* Makes sure that print can display a long.
*
*/
public final void print(long x) {
print("" + x);
}
/**
* Makes sure that print can display an Object.
*
*/
public final void print(Object x) {
print("" + x);
}
/* Method: println() */
/**
* Completes the output line and displays the dialog.
*
* Example: dialog.println();
*/
public void println() {
model.popupMessage(outputLine);
outputLine = "";
}
/* Method: println(value) */
/**
* Adds the value to the current output line and then displays the dialog.
* The println method is overloaded so that value
* can be of any type.
*
* Example: dialog.println(value);
* @param value The value to be displayed
*/
public void println(String value) {
print(value);
println();
}
/**
* Makes sure that println can display a boolean.
*
*/
public final void println(boolean x) {
println("" + x);
}
/**
* Makes sure that println can display a char.
*
*/
public final void println(char x) {
println("" + x);
}
/**
* Makes sure that println can display a double.
*
*/
public final void println(double x) {
println("" + x);
}
/**
* Makes sure that println can display a float.
*
*/
public final void println(float x) {
println("" + x);
}
/**
* Makes sure that println can display an int.
*
*/
public final void println(int x) {
println("" + x);
}
/**
* Makes sure that println can display a long.
*
*/
public final void println(long x) {
println("" + x);
}
/**
* Makes sure that println can display an Object.
*
*/
public final void println(Object x) {
println("" + x);
}
/* Method: showErrorMessage(msg) */
/**
* Displays the error message in an error dialog.
*
* Example: dialog.showErrorMessage(msg);
* @param msg The error msg to be displayed
*/
public void showErrorMessage(String msg) {
model.popupErrorMessage(msg);
}
/* Method: readLine() */
/**
* Reads and returns a line of input from the dialog, without
* including the end-of-line characters that terminate the input.
*
* Example: String str = dialog.readLine();
* @return The next line of input as a String
*/
public final String readLine() {
return readLine(null);
}
/* Method: readLine(prompt) */
/**
* Prompts the user to enter a single character, which is then returned
* as the value of this method. The end-of-line characters that terminate
* the input are not included in the returned string.
*
* Example: String str = dialog.readLine(prompt);
* @param prompt The prompt string to display to the user
* @return The next line of input as a String
*/
public String readLine(String prompt) {
if (myConsole != null && myConsole.getInputScript() != null) {
return myConsole.readLine(prompt);
}
prompt = (prompt == null) ? outputLine : outputLine + prompt;
outputLine = "";
String line;
while ((line = model.popupLineInputDialog(prompt, allowCancel)) == null) {
if (allowCancel) throw new CancelledException();
}
return line;
}
/* Method: readInt() */
/**
* Reads and returns an integer value from the user. If the user types
* a value that is not a legal integer, the method ordinarily offers the
* user a chance to reenter the data, although this behavior can be
* changed using the
* setExceptionOnError method.
*
* Example: int n = dialog.readInt();
* @return The value of the input interpreted as a decimal integer
*/
public final int readInt() {
return readInt(null, Integer.MIN_VALUE, Integer.MAX_VALUE);
}
/* Method: readInt(low, high) */
/**
* Reads and returns an integer value from the user, which is constrained to
* be within the specified inclusive range. If the user types a value
* that is not a legal integer, the method ordinarily offers the user a chance
* to reenter the data, although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: int n = dialog.readInt(low, high);
* @param low The lowest value in the permitted range
* @param high The highest value in the permitted range
* @return The value of the input interpreted as a decimal integer
*/
public final int readInt(int low, int high) {
return readInt(null, low, high);
}
/* Method: readInt(prompt) */
/**
* Prompts the user to enter an integer, which is then returned as the value
* of this method. If the user types a value that is not a legal integer,
* the method ordinarily offers the user a chance to reenter the data,
* although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: int n = dialog.readInt(prompt);
* @param prompt The prompt string to display to the user
* @return The value of the input interpreted as a decimal integer
*/
public final int readInt(String prompt) {
return readInt(prompt, Integer.MIN_VALUE, Integer.MAX_VALUE);
}
/* Method: readInt(prompt, low, high) */
/**
* Prompts the user to enter an integer, which is then returned as the value
* of this method. The value must be within the inclusive range between
* low and high. If the user types a value that
* is not a legal integer or is outside the specified range, the method
* ordinarily offers the user a chance to reenter the data,
* although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: int n = dialog.readInt(prompt, low, high);
* @param prompt The prompt string to display to the user
* @param low The lowest value in the permitted range
* @param high The highest value in the permitted range
* @return The value of the input interpreted as a decimal integer
*/
public int readInt(String prompt, int low, int high) {
while (true) {
String line = readLine(prompt);
try {
int n = Integer.parseInt(line);
if (n < low || n > high) {
signalError("Value is outside the range [" + low + ":" + high + "]");
}
return n;
} catch (NumberFormatException ex) {
signalError("Illegal integer format");
}
}
}
/* Method: readDouble() */
/**
* Reads and returns a double-precision value from the user. If the user
* types a value that is not a legal number, the method ordinarily offers
* the user a chance to reenter the data, although this behavior can be
* changed using the
* setExceptionOnError method.
*
* Example: double d = dialog.readDouble();
* @return The value of the input interpreted as a double
*/
public final double readDouble() {
return readDouble(null, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY);
}
/* Method: readDouble(low, high) */
/**
* Reads and returns a double-precision value from the user, which is
* constrained to be within the specified inclusive range. If the user
* types a value that is not a legal number, the method ordinarily offers
* the user a chance to reenter the data, although this behavior can be
* changed using the
* setExceptionOnError method.
*
* Example: double d = dialog.readDouble(low, high);
* @param low The lowest value in the permitted range
* @param high The highest value in the permitted range
* @return The value of the input interpreted as a double
*/
public final double readDouble(double low, double high) {
return readDouble(null, low, high);
}
/* Method: readDouble(prompt) */
/**
* Prompts the user to enter an double-precision number, which is then
* returned as the value of this method. If the user types a value that
* is not a legal number, the method ordinarily offers the user a chance to
* reenter the data, although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: double d = dialog.readDouble(prompt);
* @param prompt The prompt string to display to the user
* @return The value of the input interpreted as a double
*/
public final double readDouble(String prompt) {
return readDouble(prompt, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY);
}
/* Method: readDouble(prompt, low, high) */
/**
* Prompts the user to enter an double-precision number, which is then returned
* as the value of this method. The value must be within the inclusive range
* between low and high. If the user types a value
* that is not a legal number, the method ordinarily offers the user a chance
* to reenter the data, although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: d = dialog.readDouble(prompt, low, high);
* @param prompt The prompt string to display to the user
* @param low The lowest value in the permitted range
* @param high The highest value in the permitted range
* @return The value of the input interpreted as a double
*/
public double readDouble(String prompt, double low, double high) {
while (true) {
String line = readLine(prompt);
try {
double d = Double.valueOf(line).doubleValue();
if (d < low || d > high) {
signalError("Value is outside the range [" + low + ":" + high + "]");
}
return d;
} catch (NumberFormatException ex) {
signalError("Illegal numeric format");
}
}
}
/* Method: readBoolean() */
/**
* Reads and returns a boolean value from the user, which must match
* either true or false, ignoring case.
* If the user types a value that is not one of these possibilities,
* the method ordinarily offers the user a chance to reenter the data,
* although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: boolean flag = dialog.readBoolean();
* @return The value of the input interpreted as a boolean value
*/
public final boolean readBoolean() {
return readBoolean(null);
}
/* Method: readBoolean(prompt) */
/**
* Prompts the user to enter a boolean value, which is then returned as
* the value of this method. If the user types a value that is not a
* legal boolean value, the method ordinarily offers the user a chance
* to reenter the data, although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: boolean flag = dialog.readBoolean(prompt);
* @param prompt The prompt string to display to the user
* @return The value of the input interpreted as a boolean value
*/
public final boolean readBoolean(String prompt) {
return readBoolean(prompt, "true", "false");
}
/* Method: readBoolean(prompt, trueLabel, falseLabel) */
/**
* Prompts the user to enter a value, which is interpreted as a boolean value
* by matching it against the trueLabel and falseLabel
* parameters. If the user types a value that is not one of the two choices,
* readBoolean ordinarily offers the user a chance
* to reenter the data, although this behavior can be changed using the
* setExceptionOnError method.
*
* Example: boolean flag = dialog.readBoolean(prompt);
* @param prompt The prompt string to display to the user
* @param trueLabel The label for the button indicating true
* @param falseLabel The label for the button indicating false
* @return The value of the input interpreted as a boolean value
*/
public boolean readBoolean(String prompt, String trueLabel, String falseLabel) {
if (myConsole != null && myConsole.getInputScript() != null) {
return myConsole.readBoolean(prompt, trueLabel, falseLabel);
}
prompt = (prompt == null) ? outputLine : outputLine + prompt;
outputLine = "";
Boolean choice;
while ((choice = model.popupBooleanInputDialog(prompt, trueLabel, falseLabel, allowCancel)) == null) {
if (allowCancel) throw new CancelledException();
}
return choice.booleanValue();
}
/* Method: setExceptionOnError(flag) */
/**
* Sets the error-handling mode of the dialog as specified by the flag
* parameter. If flag is false (which is the default), the
* input methods give the user a chance to retry after erroneous input. If this
* value is set to true, illegal input raises an
* ErrorException instead.
*
* Example: dialog.setExceptionOnError(flag);
* @param flag false to retry on errors; true to raise an exception
*/
public void setExceptionOnError(boolean flag) {
exceptionOnError = flag;
}
/* Method: getExceptionOnError() */
/**
* Returns the state of the error-handling flag.
*
* Example: boolean flag = dialog.getExceptionOnError();
* @return The current setting of the error-handling mode (false to retry
* on errors; true to raise an exception)
*/
public boolean getExceptionOnError() {
return exceptionOnError;
}
/* Method: setAllowCancel(flag) */
/**
* Sets the cancellation mode of the dialog as specified by the flag
* parameter. If flag is false (which is the default),
* the input methods do not include a "Cancel" button. If this value is set to
* to true, a "Cancel" button appears, which throws a
* CancelledException
* if it is invoked.
*
* Example: dialog.setAllowCancel(flag);
* @param flag false to remove "Cancel" button; true to enable it
*/
public void setAllowCancel(boolean flag) {
allowCancel = flag;
}
/* Method: getAllowCancel() */
/**
* Returns the state of the cancellation mode.
*
* Example: boolean flag = dialog.getAllowCancel();
* @return The current setting of the error-handling mode (false to retry
* on errors; true to raise an exception)
*/
public boolean getAllowCancel() {
return allowCancel;
}
/* Method: setAssociatedConsole(console) */
/**
* Establishes an associated console for the dialog. If the associated console
* is non-null and the console is reading from an input stream,
* then the dialog methods use the console for input instead of the dialog.
*
* Example: dialog.setAssociatedConsole(console);
* @param console The associated console
*
*/
public void setAssociatedConsole(IOConsole console) {
myConsole = console;
}
/* Method: getAssociatedConsole() */
/**
* Returns the associated console for the dialog.
*
* Example: IOConsole console = dialog.getAssociatedConsole();
* @return The associated console
*
*/
public IOConsole getAssociatedConsole() {
return myConsole;
}
/* Factory method: createModel() */
/**
* @return Creates the input dialog model in Swing or AWT style, as appropriate.
*/
protected DialogModel createModel() {
String className = new JPanel().getClass().getName();
if (className.startsWith("javax.swing.") && Platform.isSwingAvailable()) {
try {
Class swingDialogModelClass = Class.forName("acm.io.SwingDialogModel");
Class[] types = { Class.forName("java.awt.Component") };
Object[] args = { myComponent };
Constructor con = swingDialogModelClass.getConstructor(types);
return (DialogModel) con.newInstance(args);
} catch (Exception ex) {
return new AWTDialogModel(myComponent);
}
} else {
return new AWTDialogModel(myComponent);
}
}
/* Private method: signalError(msg) */
/**
* Signals that an error occurred. If exceptionOnError is true,
* this method raises an exception with the specified message. If not, this method
* displays an error dialog and returns.
*/
private void signalError(String msg) {
if (exceptionOnError) throw new ErrorException(msg);
model.popupErrorMessage(msg);
}
/* Private instance variables */
private boolean exceptionOnError;
private boolean allowCancel;
private DialogModel model;
private Component myComponent;
private IOConsole myConsole;
private String outputLine;
}
/* Package interface: DialogModel */
/**
* This interface describes the operations that a dialog must implement
* to be used in the IODialog package.
*/
interface DialogModel {
/* Method: popupMessage(msg) */
/**
* Pops up an informational message.
*/
public void popupMessage(String msg);
/* Method: popupErrorMessage(msg) */
/**
* Pops up an error message.
*/
public void popupErrorMessage(String msg);
/* Method: popupLineInputDialog(prompt, allowCancel) */
/**
* Pops up an dialog box to read a line. Clicking the Cancel box (if present)
* returns null.
*/
public String popupLineInputDialog(String prompt, boolean allowCancel);
/* Method: popupBooleanInputDialog(prompt, trueLabel, falseLabel, allowCancel) */
/**
* Pops up an dialog box to read a binary choice. Clicking the Cancel box (if present)
* returns null.
*/
public Boolean popupBooleanInputDialog(String prompt, String trueLabel, String falseLabel,
boolean allowCancel);
}
/* Package class: SwingDialogModel */
/**
* This class implements the DialogModel interface using
* the Swing JOptionPane mechanism.
*/
class SwingDialogModel implements DialogModel {
/* Constructor: SwingDialogModel */
/**
* Initializes the class.
*/
public SwingDialogModel(Component owner) {
myComponent = owner;
if (!iconTested) {
String lf = UIManager.getLookAndFeel().toString();
if (lf.indexOf("AquaLookAndFeel") == -1) {
inputIcon = null;
} else {
inputIcon = new ImageIcon(MediaTools.createImage(AQUA_QUESTION_IMAGE));
}
iconTested = true;
}
}
/* Method: popupMessage(msg) */
/**
* Pops up an informational message.
*/
public void popupMessage(String msg) {
JOptionPane.showMessageDialog(myComponent, msg);
}
/* Method: popupErrorMessage(msg) */
/**
* Pops up an error message.
*/
public void popupErrorMessage(String msg) {
JOptionPane.showMessageDialog(myComponent, msg, "Error", JOptionPane.ERROR_MESSAGE);
}
/* Method: popupLineInputDialog(prompt, allowCancel) */
/**
* Pops up an dialog box to read a line. Clicking the Cancel box
* returns null.
*/
public String popupLineInputDialog(String prompt, boolean allowCancel) {
JOptionPane pane;
if (allowCancel) {
pane = new JOptionPane(prompt, JOptionPane.QUESTION_MESSAGE, JOptionPane.OK_CANCEL_OPTION,
inputIcon);
pane.setWantsInput(true);
} else {
Object[] choices = { "OK" };
pane = new JOptionPane(prompt, JOptionPane.QUESTION_MESSAGE, JOptionPane.OK_CANCEL_OPTION,
inputIcon, choices, choices[0]);
pane.setWantsInput(true);
pane.setInputValue("");
}
JDialog dialog = pane.createDialog(myComponent, "Input");
dialog.setVisible(true);
Object value = pane.getInputValue();
if (value == JOptionPane.UNINITIALIZED_VALUE) return null;
return (String) value;
}
/* Method: popupBooleanInputDialog(prompt, trueLabel, falseLabel, allowCancel) */
/**
* Pops up an dialog box to read a binary choice. Clicking the Cancel box (if present)
* returns null.
*/
public Boolean popupBooleanInputDialog(String prompt, String trueLabel, String falseLabel,
boolean allowCancel) {
Object[] choices;
if (allowCancel) {
choices = new Object[3];
choices[2] = "Cancel";
} else {
choices = new Object[2];
}
choices[0] = trueLabel;
choices[1] = falseLabel;
String label = trueLabel + "/" + falseLabel + " question";
int choice = JOptionPane.showOptionDialog(myComponent, prompt, label,
JOptionPane.DEFAULT_OPTION,
JOptionPane.QUESTION_MESSAGE,
inputIcon, choices, choices[0]);
switch (choice) {
case 0: return Boolean.TRUE;
case 1: return Boolean.FALSE;
default: return null;
}
}
/* Static image to repair question mark bug in Aqua look and feel */
private static final String[] AQUA_QUESTION_IMAGE = {
"4749463839613D003D00E60000FFFFFFE5E5E5FFCBFF8C8C8CA7A7A7ADADAD8D8D8D929292818181",
"8585856F6F6F7373738888888B8B8B9A9A9A9D9D9D616161646464757575787878C2C2C295959597",
"97976666666868687E7E7E808080565656575757E6E6E6E7E7E79F9F9FA0A0A05E5E5E5F5F5F6B6B",
"6B6C6C6C6D6D6D6E6E6E7979797A7A7A7C7C7C7D7D7D5A5A5A5B5B5B5C5C5C5D5D5DE1E1E1E2E2E2",
"E3E3E3E4E4E4AEAEAEAFAFAFB0B0B0B1B1B1E8E8E8E9E9E9EAEAEAEBEBEBECECECEDEDEDEEEEEEEF",
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"BEBFBFBFC0C0C0C1C1C1F0F0F0F1F1F1F2F2F2F3F3F3F4F4F4F5F5F5F6F6F6F7F7F7F8F8F8F9F9F9",
"FAFAFAFBFBFBFCFCFCFDFDFDFEFEFED1D1D1D2D2D2D3D3D3D4D4D4D5D5D5D6D6D6D7D7D7D8D8D8D9",
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"9446480E6CEC81C7142CB6E8E28B2F1A20C28C330E00E38D30DE3004181D28E21A1E407C11C59044",
"1669E4901494B001FF094E1CE92491391881041831F0F50E0E318C71871133EC11C313608629E698",
"6486D9C31840D4D0C41C6B7860256A385487461872DC410113491C7184117C1651001C3D042AA818",
"55AE865A0E01988147113FB431460086462A000EB8496AE9A589E890830731BCC0C6A76CB4014300",
"37BC8929213D04A0860C4F70E1DB1528B25169A439ACF14271C6ADB2031A32A0D6031B38E49AEB15",
"6D52D4411A5808ABAC2439A8616A223BB864DC0D158880810A291C750A0A4DF896C30B8BE8B0466C",
"BE7911820597DC60022A09F886067D8DA47105784551E182016028F5940AA87C40EF503298588819",
"56FC4B540748B570465148B06BB0506DC05BDF0D5C546CF1FFC5185F0C042A1564CCC501A8D4E1F1",
"C8158F37880E61C4A7B22D069CB280142BD312000C83ECA0861638E7ACF3CE3CF7AC4510A7480085",
"CF44E73CC519837460867F4C5FE5850B2D80D0B458557CC1570E7360A1F5D65C77ED75D7206BF0F5",
"D8646321C31966DD00870711B67D20830EBAEDB61B6DF0E5035AD2E4BD0C011710A0F7DFADD4F1A6",
"07615020E2E18827CE610C4ED45D480E621CD1038E94B738060B34B63046E59517FE426484783086",
"1160708EE304E48C7382E930F64004DDCF0EC2430C720C71C693B8CBC102392B7881BB933C30D1C4",
"3EA023A25B1E41D8C1D1EFCC371F451B362CF145A10BC1F005053FE8D14199DC773FE6183F1CF1C6",
"82BBC52BA443076AD4A14711F880814340F0C3FF850D3628E1C61830087C9A0FF1BC30861C7B6082",
"118050001A0C01097BB0031EF6D0384139F00B6638884A3045120FC8A00D6A288318C0E0853A7810",
"804220420744239A479D8A213C08C018ECD0981CEC8034279C486BD4400726FC600E908A21457C90",
"0318C880073A0C222102010021FF0B4D414347436F6E2004031039000000015772697474656E2062",
"7920474946436F6E76657274657220322E342E33206F66204D6F6E6461792C204D61792032352C20",
"31393938003B"
};
/* Static variables */
private static boolean iconTested;
private static Icon inputIcon;
/* Private instance variables */
private Component myComponent;
}
/* Package class: AWTDialogModel */
/**
* This class implements the DialogModel interface using
* the AWT.
*/
class AWTDialogModel implements DialogModel {
/* Constructor: AWTDialogModel */
/**
* Initializes the images for the class.
*/
public AWTDialogModel(Component owner) {
myComponent = owner;
imagesReady = false;
}
/* Method: popupMessage(msg) */
/**
* Pops up an informational message.
*/
public void popupMessage(String msg) {
if (!imagesReady) createImages();
Frame frame = JTFTools.getEnclosingFrame(myComponent);
new AWTMessageDialog(frame, "Message", informImage, msg).setVisible(true);
}
/* Method: popupErrorMessage(msg) */
/**
* Pops up an error message.
*/
public void popupErrorMessage(String msg) {
if (!imagesReady) createImages();
Frame frame = JTFTools.getEnclosingFrame(myComponent);
new AWTMessageDialog(frame, "Error", errorImage, msg).setVisible(true);
}
/* Method: popupLineInputDialog(prompt, allowCancel) */
/**
* Pops up an dialog box to read a line. Clicking the Cancel box (if present)
* returns null.
*/
public String popupLineInputDialog(String prompt, boolean allowCancel) {
if (!imagesReady) createImages();
Frame frame = JTFTools.getEnclosingFrame(myComponent);
AWTLineInputDialog dialog = new AWTLineInputDialog(frame, prompt, questionImage,
allowCancel);
dialog.setVisible(true);
return dialog.getInput();
}
/* Method: popupBooleanInputDialog(prompt, trueLabel, falseLabel, allowCancel) */
/**
* Pops up an dialog box to read a binary choice. Clicking the Cancel box (if present)
* returns null.
*/
public Boolean popupBooleanInputDialog(String prompt, String trueLabel, String falseLabel,
boolean allowCancel) {
if (!imagesReady) createImages();
Frame frame = JTFTools.getEnclosingFrame(myComponent);
AWTBooleanInputDialog dialog = new AWTBooleanInputDialog(frame, prompt, questionImage,
trueLabel, falseLabel, allowCancel);
dialog.setVisible(true);
return dialog.getInput();
}
/* Private method: createImages */
private void createImages() {
errorImage = MediaTools.createImage(ERROR_IMAGE);
informImage = MediaTools.createImage(INFORM_IMAGE);
questionImage = MediaTools.createImage(QUESTION_IMAGE);
imagesReady = true;
}
/* Private instance variables */
private Image errorImage;
private Image informImage;
private Image questionImage;
private Component myComponent;
private boolean imagesReady;
/* Images for the AWT dialogs */
private static final String[] ERROR_IMAGE = {
"47494638396120002000F70000FFFFFF980098339999989800111111222222000054CBFFCB003298",
"0033660033CC0033FE00323266330066660000659800989800CC9900FE99329800659800CC0099FE",
"0098659898999999CC9900FE98009800329800659900CC9800FE3399CB3399FF9999339898659832",
"0098650099339998659833CB9833FF9999CC0099FE00336699656698CC9898FF9999323200336600",
"32003233006632009833339965009866339900663300983200666600986500CC3300FE3200CC6600",
"FE65CCCC98CCFF99FFCC99FFFF993300CC3200FE6600CC6500FECC0033CC0066FE0032FE00653399",
"33339966669933669865CC00CCCB00FEFE00CBFE00FE6699CC6598FF9898CC9999FFCB9833CC9966",
"FF9933FF9865333333326532323265326565660033653232660066653265CC3300CC6600FE3200FE",
"65000066CC0099CC0066FE0098FE00CCCC00FECB00CCFE00FEFE33CC0033FE0066CC0066FE00CB33",
"98CC6699FF3399FF659866CC9965FF9898CC9899FF99CCCC00CCFE00FECB00FEFE00993333996633",
"9933669865659833CB9966CC9933FF9865FF33CBCB33FFCC33CCFF33FFFF99CB3399FF3399CC6698",
"FF65CC98CCCCCCCCCC99FFCBCBFFFF99CCFFCBCBFF99FFFFCBFF3333CB3366CB3333FF3366FF6533",
"CB6666CC6633FF6565FFCB3333CB6533CB3365CC6666FF3333FF6633FF3366FF656533CB3333FF33",
"33CB6633FF6666CB3366FF3366CC6665FF65CB33CBCC66CCCC33FFCC65FFFF33CCFF65CCFF33FFFF",
"65FF66CCCC65FFCC65CCFF65FFFF98CCCC99FFCC99CCFF99FFFFCBCB33CCFF33CCCC66CCFF65FFCC",
"33FFFF33FFCC65FFFF65444444656532DDDDDDCBFFFFFFFFCBEEEEEE100000980000001000660000",
"000098000066777777888888AAAAAABBBBBB5555556666660000100000224400005400000000CC00",
"00DC0000EE0000FE00003200004400880000980000AA0000BA0000CC0000DC0000EE0000FE00CC00",
"00DC0000EE0000FE0000004400005400006600007600220000320000AA0000BA0000002200003200",
"7600008800000000AA0000BA00007600008800000021F90401000096002C0000000020002000C7FF",
"FFFF980098339999989800111111222222000054CBFFCB0032980033660033CC0033FE0032326633",
"0066660000659800989800CC9900FE99329800659800CC0099FE0098659898999999CC9900FE9800",
"9800329800659900CC9800FE3399CB3399FF99993398986598320098650099339998659833CB9833",
"FF9999CC0099FE00336699656698CC9898FF99993232003366003200323300663200983333996500",
"9866339900663300983200666600986500CC3300FE3200CC6600FE65CCCC98CCFF99FFCC99FFFF99",
"3300CC3200FE6600CC6500FECC0033CC0066FE0032FE0065339933339966669933669865CC00CCCB",
"00FEFE00CBFE00FE6699CC6598FF9898CC9999FFCB9833CC9966FF9933FF98653333333265323232",
"65326565660033653232660066653265CC3300CC6600FE3200FE65000066CC0099CC0066FE0098FE",
"00CCCC00FECB00CCFE00FEFE33CC0033FE0066CC0066FE00CB3398CC6699FF3399FF659866CC9965",
"FF9898CC9899FF99CCCC00CCFE00FECB00FEFE009933339966339933669865659833CB9966CC9933",
"FF9865FF33CBCB33FFCC33CCFF33FFFF99CB3399FF3399CC6698FF65CC98CCCCCCCCCC99FFCBCBFF",
"FF99CCFFCBCBFF99FFFFCBFF3333CB3366CB3333FF3366FF6533CB6666CC6633FF6565FFCB3333CB",
"6533CB3365CC6666FF3333FF6633FF3366FF656533CB3333FF3333CB6633FF6666CB3366FF3366CC",
"6665FF65CB33CBCC66CCCC33FFCC65FFFF33CCFF65CCFF33FFFF65FF66CCCC65FFCC65CCFF65FFFF",
"98CCCC99FFCC99CCFF99FFFFCBCB33CCFF33CCCC66CCFF65FFCC33FFFF33FFCC65FFFF6544444465",
"6532DDDDDDCBFFFFFFFFCBEEEEEE100000980000001000660000000098000066777777888888AAAA",
"AABBBBBB5555556666660000100000224400005400000000CC0000DC0000EE0000FE000032000044",
"00880000980000AA0000BA0000CC0000DC0000EE0000FE00CC0000DC0000EE0000FE000000440000",
"5400006600007600220000320000AA0000BA00000022000032007600008800000000AA0000BA0000",
"7600008800000008E5002D091C28909DC1830813B22348D0202D85D5AA294C185121872EEC1E4E44",
"18B1E34676EBD85DB48430E4C793074736CC88F22387861A377A3438F3A04991186352AC08916742",
"950339B404F9B30BC3A30E87A63C5A90A55297057572F43955A2C59C2D3B529D78D1A94C9F350DDE",
"EC2A95A6D58F5B71067DBA112853A11CE2CA9D4BD72853A41969E9DDCB77AFC8BB2BCBB67CC93429",
"DB9F810F43F55A156D5AB236779E353B1921E4931EC35E657C53F260AC982B6A2ECAB2F341CDA30D",
"5EF6FCB5324EC68A23ABB5243476D1A3B5893E5DE716B76CB16DED020EDAA5B8F1E3C8EF06040021",
"FF0B4D414347436F6E2004031039000000015772697474656E20627920474946436F6E7665727465",
"7220322E342E33206F66204D6F6E6461792C204D61792032352C2031393938003B"
};
private static final String[] INFORM_IMAGE = {
"47494638396120002000F70000FFFFFF980098339999989800111111222222000054CBFFCB003298",
"0033660033CC0033FE00323266330066660000659800989800CC9900FE99329800659800CC0099FE",
"0098659898999999CC9900FE98009800329800659900CC9800FE3399CB3399FF9999339898659832",
"0098650099339998659833CB9833FF9999CC0099FE00336699656698CC9898FF9999323200336600",
"32003233006632009833339965009866339900663300983200666600986500CC3300FE3200CC6600",
"FE65CCCC98CCFF99FFCC99FFFF993300CC3200FE6600CC6500FECC0033CC0066FE0032FE00653399",
"33339966669933669865CC00CCCB00FEFE00CBFE00FE6699CC6598FF9898CC9999FFCB9833CC9966",
"FF9933FF9865333333326532323265326565660033653232660066653265CC3300CC6600FE3200FE",
"65000066CC0099CC0066FE0098FE00CCCC00FECB00CCFE00FEFE33CC0033FE0066CC0066FE00CB33",
"98CC6699FF3399FF659866CC9965FF9898CC9899FF99CCCC00CCFE00FECB00FEFE00993333996633",
"9933669865659833CB9966CC9933FF9865FF33CBCB33FFCC33CCFF33FFFF99CB3399FF3399CC6698",
"FF65CC98CCCCCCCCCC99FFCBCBFFFF99CCFFCBCBFF99FFFFCBFF3333CB3366CB3333FF3366FF6533",
"CB6666CC6633FF6565FFCB3333CB6533CB3365CC6666FF3333FF6633FF3366FF656533CB3333FF33",
"33CB6633FF6666CB3366FF3366CC6665FF65CB33CBCC66CCCC33FFCC65FFFF33CCFF65CCFF33FFFF",
"65FF66CCCC65FFCC65CCFF65FFFF98CCCC99FFCC99CCFF99FFFFCBCB33CCFF33CCCC66CCFF65FFCC",
"33FFFF33FFCC65FFFF65444444656532DDDDDDCBFFFFFFFFCBEEEEEE100000980000001000660000",
"000098000066777777888888AAAAAABBBBBB5555556666660000100000224400005400000000CC00",
"00DC0000EE0000FE00003200004400880000980000AA0000BA0000CC0000DC0000EE0000FE00CC00",
"00DC0000EE0000FE0000004400005400006600007600220000320000AA0000BA0000002200003200",
"7600008800000000AA0000BA00007600008800000021F90401000096002C0000000020002000C7FF",
"FFFF980098339999989800111111222222000054CBFFCB0032980033660033CC0033FE0032326633",
"0066660000659800989800CC9900FE99329800659800CC0099FE0098659898999999CC9900FE9800",
"9800329800659900CC9800FE3399CB3399FF99993398986598320098650099339998659833CB9833",
"FF9999CC0099FE00336699656698CC9898FF99993232003366003200323300663200983333996500",
"9866339900663300983200666600986500CC3300FE3200CC6600FE65CCCC98CCFF99FFCC99FFFF99",
"3300CC3200FE6600CC6500FECC0033CC0066FE0032FE0065339933339966669933669865CC00CCCB",
"00FEFE00CBFE00FE6699CC6598FF9898CC9999FFCB9833CC9966FF9933FF98653333333265323232",
"65326565660033653232660066653265CC3300CC6600FE3200FE65000066CC0099CC0066FE0098FE",
"00CCCC00FECB00CCFE00FEFE33CC0033FE0066CC0066FE00CB3398CC6699FF3399FF659866CC9965",
"FF9898CC9899FF99CCCC00CCFE00FECB00FEFE009933339966339933669865659833CB9966CC9933",
"FF9865FF33CBCB33FFCC33CCFF33FFFF99CB3399FF3399CC6698FF65CC98CCCCCCCCCC99FFCBCBFF",
"FF99CCFFCBCBFF99FFFFCBFF3333CB3366CB3333FF3366FF6533CB6666CC6633FF6565FFCB3333CB",
"6533CB3365CC6666FF3333FF6633FF3366FF656533CB3333FF3333CB6633FF6666CB3366FF3366CC",
"6665FF65CB33CBCC66CCCC33FFCC65FFFF33CCFF65CCFF33FFFF65FF66CCCC65FFCC65CCFF65FFFF",
"98CCCC99FFCC99CCFF99FFFFCBCB33CCFF33CCCC66CCFF65FFCC33FFFF33FFCC65FFFF6544444465",
"6532DDDDDDCBFFFFFFFFCBEEEEEE100000980000001000660000000098000066777777888888AAAA",
"AABBBBBB5555556666660000100000224400005400000000CC0000DC0000EE0000FE000032000044",
"00880000980000AA0000BA0000CC0000DC0000EE0000FE00CC0000DC0000EE0000FE000000440000",
"5400006600007600220000320000AA0000BA00000022000032007600008800000000AA0000BA0000",
"7600008800000008A0002D091C48B0A0C1830809F659B8F09F43870C17268C4891E2C38A18FB4C8C",
"F81062C484200536F418D260C691FF4E6A44A8F2E2C9920531C29CC9706648861D534AB46909634E",
"992C55F671A932A650A22F830AADC8B3274A8F2B9B9ADC291564D4AA072962353A14EA568E1D3FF2",
"ACF8536BC98C65992A450B3523D7966D933A3D1AD7AD42B83AE54EF559B7E659B27D9B8245FA15A5",
"DFAD22C5228EC933200021FF0B4D414347436F6E2004031039000000015772697474656E20627920",
"474946436F6E76657274657220322E342E33206F66204D6F6E6461792C204D61792032352C203139",
"3938003B"
};
private static final String[] QUESTION_IMAGE = {
"47494638396120002000F70000FFFFFF980098339999989800111111222222000054CBFFCB003298",
"0033660033CC0033FE00323266330066660000659800989800CC9900FE99329800659800CC0099FE",
"0098659898999999CC9900FE98009800329800659900CC9800FE3399CB3399FF9999339898659832",
"0098650099339998659833CB9833FF9999CC0099FE00336699656698CC9898FF9999323200336600",
"32003233006632009833339965009866339900663300983200666600986500CC3300FE3200CC6600",
"FE65CCCC98CCFF99FFCC99FFFF993300CC3200FE6600CC6500FECC0033CC0066FE0032FE00653399",
"33339966669933669865CC00CCCB00FEFE00CBFE00FE6699CC6598FF9898CC9999FFCB9833CC9966",
"FF9933FF9865333333326532323265326565660033653232660066653265CC3300CC6600FE3200FE",
"65000066CC0099CC0066FE0098FE00CCCC00FECB00CCFE00FEFE33CC0033FE0066CC0066FE00CB33",
"98CC6699FF3399FF659866CC9965FF9898CC9899FF99CCCC00CCFE00FECB00FEFE00993333996633",
"9933669865659833CB9966CC9933FF9865FF33CBCB33FFCC33CCFF33FFFF99CB3399FF3399CC6698",
"FF65CC98CCCCCCCCCC99FFCBCBFFFF99CCFFCBCBFF99FFFFCBFF3333CB3366CB3333FF3366FF6533",
"CB6666CC6633FF6565FFCB3333CB6533CB3365CC6666FF3333FF6633FF3366FF656533CB3333FF33",
"33CB6633FF6666CB3366FF3366CC6665FF65CB33CBCC66CCCC33FFCC65FFFF33CCFF65CCFF33FFFF",
"65FF66CCCC65FFCC65CCFF65FFFF98CCCC99FFCC99CCFF99FFFFCBCB33CCFF33CCCC66CCFF65FFCC",
"33FFFF33FFCC65FFFF65444444656532DDDDDDCBFFFFFFFFCBEEEEEE100000980000001000660000",
"000098000066777777888888AAAAAABBBBBB5555556666660000100000224400005400000000CC00",
"00DC0000EE0000FE00003200004400880000980000AA0000BA0000CC0000DC0000EE0000FE00CC00",
"00DC0000EE0000FE0000004400005400006600007600220000320000AA0000BA0000002200003200",
"7600008800000000AA0000BA00007600008800000021F90401000096002C0000000020002000C7FF",
"FFFF980098339999989800111111222222000054CBFFCB0032980033660033CC0033FE0032326633",
"0066660000659800989800CC9900FE99329800659800CC0099FE0098659898999999CC9900FE9800",
"9800329800659900CC9800FE3399CB3399FF99993398986598320098650099339998659833CB9833",
"FF9999CC0099FE00336699656698CC9898FF99993232003366003200323300663200983333996500",
"9866339900663300983200666600986500CC3300FE3200CC6600FE65CCCC98CCFF99FFCC99FFFF99",
"3300CC3200FE6600CC6500FECC0033CC0066FE0032FE0065339933339966669933669865CC00CCCB",
"00FEFE00CBFE00FE6699CC6598FF9898CC9999FFCB9833CC9966FF9933FF98653333333265323232",
"65326565660033653232660066653265CC3300CC6600FE3200FE65000066CC0099CC0066FE0098FE",
"00CCCC00FECB00CCFE00FEFE33CC0033FE0066CC0066FE00CB3398CC6699FF3399FF659866CC9965",
"FF9898CC9899FF99CCCC00CCFE00FECB00FEFE009933339966339933669865659833CB9966CC9933",
"FF9865FF33CBCB33FFCC33CCFF33FFFF99CB3399FF3399CC6698FF65CC98CCCCCCCCCC99FFCBCBFF",
"FF99CCFFCBCBFF99FFFFCBFF3333CB3366CB3333FF3366FF6533CB6666CC6633FF6565FFCB3333CB",
"6533CB3365CC6666FF3333FF6633FF3366FF656533CB3333FF3333CB6633FF6666CB3366FF3366CC",
"6665FF65CB33CBCC66CCCC33FFCC65FFFF33CCFF65CCFF33FFFF65FF66CCCC65FFCC65CCFF65FFFF",
"98CCCC99FFCC99CCFF99FFFFCBCB33CCFF33CCCC66CCFF65FFCC33FFFF33FFCC65FFFF6544444465",
"6532DDDDDDCBFFFFFFFFCBEEEEEE100000980000001000660000000098000066777777888888AAAA",
"AABBBBBB5555556666660000100000224400005400000000CC0000DC0000EE0000FE000032000044",
"00880000980000AA0000BA0000CC0000DC0000EE0000FE00CC0000DC0000EE0000FE000000440000",
"5400006600007600220000320000AA0000BA00000022000032007600008800000000AA0000BA0000",
"7600008800000008A9002D091C485060AE83080F165C383021C27F1021268C28D1612E831633E6A2",
"A8D121C68E1B2B82BCB8502345911E0982E478F024484B235BA27C593263C48E0C6BC64C98F3E3C4",
"934033AAB4E952E64DA13B1FB24CDAF1E84E98319D8E2CD874A9D09E0D9F62659874EB50A608B112",
"053A5321558B568B5ACC8A56ADDA9426DD5AE50936A4D4BA3FEFE2555A762F5FA65047EAD5C8D66F",
"CAC26D07F3E43AB6AF59B175BD325EBB35200021FF0B4D414347436F6E2004031039000000015772",
"697474656E20627920474946436F6E76657274657220322E342E33206F66204D6F6E6461792C204D",
"61792032352C2031393938003B"
};
}
/* Package class: AWTDialog */
/**
* This class acts as the common foundation for the various AWT dialog boxes
* that are displayed as part of the IODialog operation.
*/
abstract class AWTDialog extends Dialog implements ActionListener {
/* Constant: WIDTH */
/**
* The standard width of the AWT dialog box.
*/
public static final int WIDTH = 260;
/* Constant: HEIGHT */
/**
* The standard height of the AWT dialog box.
*/
public static final int HEIGHT = 115;
/* Constructor: AWTDialog(frame, title, icon) */
/**
* Creates the standard AWT dialog. Subclasses change the behavior by
* overriding the various abstract methods.
*/
public AWTDialog(Frame frame, String title, Image icon, boolean allowCancel) {
super(frame, title, true);
setLayout(new BorderLayout());
Panel topPanel = new Panel();
Panel buttonPanel = new Panel();
Panel dataPanel = new Panel();
Panel marginPanel = new Panel();
topPanel.setLayout(new BorderLayout());
buttonPanel.setLayout(new FlowLayout());
dataPanel.setLayout(new BorderLayout());
marginPanel.setLayout(new BorderLayout());
marginPanel.add(new Label(" "));
messageArea = new AWTMessageCanvas();
dataPanel.add(messageArea, BorderLayout.CENTER);
initButtonPanel(buttonPanel, allowCancel);
initDataPanel(dataPanel);
topPanel.add(new AWTIconCanvas(icon), BorderLayout.WEST);
topPanel.add(dataPanel, BorderLayout.CENTER);
add(topPanel, BorderLayout.CENTER);
add(buttonPanel, BorderLayout.SOUTH);
add(marginPanel, BorderLayout.EAST);
Rectangle bounds = frame.getBounds();
int cx = bounds.x + bounds.width / 2;
int cy = bounds.y + bounds.height / 2;
setBounds(cx - WIDTH / 2, cy - HEIGHT / 2, WIDTH, HEIGHT);
validate();
}
/* Abstract method: initButtonPanel(buttonPanel, allowCancel) */
/**
* Initializes the contents of the button panel. Subclasses override this
* method to initialize the buttons for that subclass. The layout of the
* button panel is FlowLayout with right alignment.
*/
public abstract void initButtonPanel(Panel buttonPanel, boolean allowCancel);
/* Abstract method: initDataPanel(dataPanel) */
/**
* Initializes the contents of the data panel. Subclasses override this
* method to initialize the format for that subclass. The layout of the
* data panel is BorderLayout.
*/
public abstract void initDataPanel(Panel dataPanel);
/* Abstract method: actionPerformed(ActionEvent e) */
/**
* Responds to actions in the button panel. Subclasses override this
* method to respond to these actions as appropriate to the subclass.
*/
public abstract void actionPerformed(ActionEvent e);
/* Method: setMessage(msg) */
/**
* Sets the text of the message.
*/
public void setMessage(String msg) {
messageArea.setMessage(msg);
}
/* Private instance variables */
private AWTMessageCanvas messageArea;
}
/* Package class: AWTMessageDialog */
/**
* This class displays a message dialog in the AWT world.
*/
class AWTMessageDialog extends AWTDialog {
/* Constructor: AWTMessageDialog(frame, title, icon, msg) */
/**
* Creates an AWTMessageDialog.
*/
public AWTMessageDialog(Frame frame, String title, Image icon, String msg) {
super(frame, title, icon, false);
setMessage(msg);
}
/* Method: initButtonPanel(buttonPanel, allowCancel) */
/**
* Initializes the contents of the button panel.
*/
public void initButtonPanel(Panel buttonPanel, boolean allowCancel) {
okButton = new Button("OK");
okButton.addActionListener(this);
buttonPanel.add(okButton);
}
/* Method: initDataPanel(dataPanel) */
/**
* Initializes the contents of the data panel.
*/
public void initDataPanel(Panel dataPanel) {
/* Empty */
}
/* Method: actionPerformed(ActionEvent e) */
/**
* Responds to actions in the button panel.
*/
public void actionPerformed(ActionEvent e) {
if (e.getSource() == okButton) {
setVisible(false);
}
}
/* Private instance variables */
private Button okButton;
}
/* Package class: AWTLineInputDialog */
/**
* This class requests a line of input in the AWT world.
*/
class AWTLineInputDialog extends AWTDialog {
/* Constructor: AWTLineInputDialog(frame, msg, icon) */
/**
* Creates an AWTLineInputDialog.
*/
public AWTLineInputDialog(Frame frame, String msg, Image icon, boolean allowCancel) {
super(frame, "Input", icon, allowCancel);
setMessage(msg);
}
/* Method: getInput() */
/**
* Returns the input line after the dialog has been dismissed. This value
* is either the string entered by the user or null if the
* cancel button is entered.
*/
public String getInput() {
return input;
}
/* Method: setVisible(flag) */
/**
* Overrides the standard dialog setVisible method to ensure that
* the text line gets the focus.
*/
public void setVisible(boolean flag) {
super.setVisible(flag);
if (flag) textLine.requestFocus();
}
/* Method: initButtonPanel(buttonPanel, allowCancel) */
/**
* Initializes the contents of the button panel.
*/
public void initButtonPanel(Panel buttonPanel, boolean allowCancel) {
okButton = new Button("OK");
okButton.addActionListener(this);
buttonPanel.add(okButton);
if (allowCancel) {
cancelButton = new Button("Cancel");
cancelButton.addActionListener(this);
buttonPanel.add(cancelButton);
}
}
/* Method: initDataPanel(dataPanel) */
/**
* Initializes the contents of the data panel.
*/
public void initDataPanel(Panel dataPanel) {
textLine = new TextField();
textLine.addActionListener(this);
dataPanel.add(textLine, BorderLayout.SOUTH);
}
/* Method: actionPerformed(ActionEvent e) */
/**
* Responds to actions in the button panel.
*/
public void actionPerformed(ActionEvent e) {
Component source = (Component) e.getSource();
if (source == okButton || source == textLine) {
input = textLine.getText();
setVisible(false);
} else if (source == cancelButton) {
input = null;
setVisible(false);
}
}
/* Private instance variables */
private Button cancelButton, okButton;
private TextField textLine;
private String input;
}
/* Package class: AWTBooleanInputDialog */
/**
* This class requests boolean input in the AWT world.
*/
class AWTBooleanInputDialog extends AWTDialog {
/* Constructor: AWTBooleanInputDialog(frame, msg, icon, trueLabel, falseLabel) */
/**
* Creates an AWTLineInputDialog.
*/
public AWTBooleanInputDialog(Frame frame, String msg, Image icon,
String trueLabel, String falseLabel, boolean allowCancel) {
super(frame, "Input", icon, allowCancel);
setMessage(msg);
trueButton.setLabel(trueLabel);
falseButton.setLabel(falseLabel);
}
/* Method: getInput() */
/**
* Returns the boolean input after the dialog has been dismissed. This value
* is either Boolean.TRUE, Boolean.FALSE,
* or null if the cancel button is entered.
*/
public Boolean getInput() {
return input;
}
/* Method: initButtonPanel(buttonPanel, allowCancel) */
/**
* Initializes the contents of the button panel.
*/
public void initButtonPanel(Panel buttonPanel, boolean allowCancel) {
trueButton = new Button("True");
trueButton.addActionListener(this);
buttonPanel.add(trueButton);
falseButton = new Button("False");
falseButton.addActionListener(this);
buttonPanel.add(falseButton);
if (allowCancel) {
cancelButton = new Button("Cancel");
cancelButton.addActionListener(this);
buttonPanel.add(cancelButton);
}
}
/* Method: initDataPanel(dataPanel) */
/**
* Initializes the contents of the data panel.
*/
public void initDataPanel(Panel dataPanel) {
/* Empty */
}
/* Method: actionPerformed(ActionEvent e) */
/**
* Responds to actions in the button panel.
*/
public void actionPerformed(ActionEvent e) {
Component source = (Component) e.getSource();
if (source == trueButton) {
input = Boolean.TRUE;
setVisible(false);
} else if (source == falseButton) {
input = Boolean.FALSE;
setVisible(false);
} else if (source == cancelButton) {
input = null;
setVisible(false);
}
}
/* Private instance variables */
private Button trueButton, falseButton, cancelButton;
private Boolean input;
}
/* Package class: AWTIconCanvas */
/**
* This class displays an icon in the AWT world.
*/
class AWTIconCanvas extends Canvas {
/* Constructor: AWTIconCanvas(icon) */
/**
* Creates an canvas for displaying an icon.
*/
public AWTIconCanvas(Image icon) {
myIcon = icon;
}
/* Method: getMinimumSize() */
/**
* Returns the minimum size of the icon.
*/
public Dimension getMinimumSize() {
return new Dimension(48, 48);
}
/* Method: getPreferredSize() */
/**
* Returns the preferred size of the icon.
*/
public Dimension getPreferredSize() {
return getMinimumSize();
}
/* Method: paint(g) */
/**
* Draws the icon on the specified Graphics context.
*/
public void paint(Graphics g) {
g.drawImage(myIcon, 8, 8, this);
}
/* Private instance variables */
private Image myIcon;
}
/* Package class: AWTMessageCanvas */
/**
* This class manages the message area of a dialog in the AWT world.
*/
class AWTMessageCanvas extends Canvas {
/* Constant: MARGIN */
/**
* The margin for text display inside the message area.
*/
public static final int MARGIN = 8;
/* Constant: MESSAGE_FONT */
/**
* The font to use in the message box.
*/
public static final Font MESSAGE_FONT = new Font("Dialog", Font.PLAIN, 12);
/* Constructor: AWTMessageCanvas() */
/**
* Creates an canvas for displaying a message in a IODialog box.
*/
public AWTMessageCanvas() {
setFont(MESSAGE_FONT);
}
/* Method: setMessage(msg) */
/**
* Sets the text of the message.
*/
public void setMessage(String msg) {
message = msg;
}
/* Method: paint(g) */
/**
* Draws the message on the specified Graphics context.
*/
public void paint(Graphics g) {
FontMetrics fm = g.getFontMetrics();
int x = MARGIN;
int y = MARGIN + fm.getAscent();
int limit = getSize().width - MARGIN;
StringTokenizer tokenizer = new StringTokenizer(message, " ", true);
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
int width = fm.stringWidth(token);
if (x + width > limit) {
x = MARGIN;
y += fm.getHeight();
if (token.equals(" ")) continue;
}
g.drawString(token, x, y);
x += width;
}
}
/* Private instance variables */
private String message;
}