+ * It is part of our effort to provide support for both J2SE + * and J2ME platforms. + *
+ *+ * IMPORTANT: some of the methods have been modified from their + * J2SE parents. Refer to the description of each method for + * specific changes. + *
+ *+ * Values represent sine for each degree between 0 and 90. Values have + * been multiplied by 65536 and rounded. + *
+ */ +static int[] sineTable = { + 0, 1143, 2287, 3429, 4571, 5711, 6850, 7986, 9120, 10252, // 0 to 9 degrees + 11380, 12504, 13625, 14742, 15854, 16961, 18064, 19160, 20251, 21336, // 10 to 19 degrees + 22414, 23486, 24550, 25606, 26655, 27696, 28729, 29752, 30767, 31772, // 20 to 29 degrees + 32767, 33753, 34728, 35693, 36647, 37589, 38521, 39440, 40347, 41243, // 30 to 39 degrees + 42125, 42995, 43852, 44695, 45525, 46340, 47142, 47929, 48702, 49460, // 40 to 49 degrees + 50203, 50931, 51643, 52339, 53019, 53683, 54331, 54963, 55577, 56175, // 50 to 59 degrees + 56755, 57319, 57864, 58393, 58903, 59395, 59870, 60326, 60763, 61183, // 60 to 69 degrees + 61583, 61965, 62328, 62672, 62997, 63302, 63589, 63856, 64103, 64331, // 70 to 79 degrees + 64540, 64729, 64898, 65047, 65176, 65286, 65376, 65446, 65496, 65526, // 80 to 89 degrees + 65536 }; // 90 degrees + +private static final String CLDC_COMPATIBILITY_DELEGATE = "org.eclipse.swt.internal.CLDCCompatibilityDelegate"; +private static final String CDC_COMPATIBILITY_DELEGATE = "org.eclipse.swt.internal.CDCCompatibilityDelegate"; + +private static CompatibilityDelegate fDelegate; + +/** + * Tests whether the application can read the file denoted by the path. + * + * @param path the path string + * @return true if and only if the file specified by this path exists and can be opened by the application; false otherwise + * @exception SecurityException + */ +public static boolean canOpenFile(String path) throws SecurityException { + return getDelegate().canOpenFile(path); +} + +private static CompatibilityDelegate getDelegate() { + if(fDelegate == null) { + Class clazz; + try { + clazz = Class.forName(CLDC_COMPATIBILITY_DELEGATE); + fDelegate = (CompatibilityDelegate) clazz.newInstance(); + } catch(Exception e) { + + } + if(fDelegate == null) { + try { + clazz = Class.forName(CDC_COMPATIBILITY_DELEGATE); + fDelegate = (CompatibilityDelegate) clazz.newInstance(); + } catch(Exception e) { + throw new RuntimeException("Can not instantiate Compatibility Delegate"); + } + } + } + return fDelegate; +} + +/** + * Answers the length of the side adjacent to the given angle + * of a right triangle. In other words, it returns the integer + * conversion of length * cos (angle). + *+ * IMPORTANT: the j2me version has an additional restriction on + * the argument. length must be between -32767 and 32767 (inclusive). + *
+ * + * @param angle the angle in degrees + * @param length the length of the triangle's hypotenuse + * @return the integer conversion of length * cos (angle) + */ +public static int cos(int angle, int length) { + return sin(90 - angle, length); +} + +/** + * Answers the length of the side opposite to the given angle + * of a right triangle. In other words, it returns the integer + * conversion of length * sin (angle). + *+ * IMPORTANT: the j2me version has an additional restriction on + * the argument. length must be between -32767 and 32767 (inclusive). + *
+ * + * @param angle the angle in degrees + * @param length the length of the triangle's hypotenuse + * @return the integer conversion of length * sin (angle) + */ +public static int sin(int angle, int length) { + if (length < -32767 || length > 32767) { + SWT.error(SWT.ERROR_INVALID_RANGE); + } + if (angle < 0 || angle >= 360) { + angle = angle % 360; + if (angle < 0) angle += 360; + } + + int sineValue; + if (angle >= 0 && angle < 90) sineValue = sineTable[angle]; + else if (angle >= 90 && angle < 180) sineValue = sineTable[180 - angle]; + else if (angle >= 180 && angle < 270) sineValue = 0 - sineTable[angle - 180]; + else { + // angle >= 270 && angle < 360 + sineValue = 0 - sineTable[360 - angle]; + } + + return (sineValue * length) >> 16; +} + +/** + * Answers the most negative (i.e. closest to negative infinity) + * integer value which is greater than the number obtained by dividing + * the first argument p by the second argument q. + * + * @param p numerator + * @param q denominator (must be different from zero) + * @return the ceiling of the rational number p / q. + */ +public static int ceil(int p, int q) { + int res = p / q; + if ((p % q == 0) || + (res < 0) || + ((res == 0) && ((p < 0 && q > 0) || (p > 0 && q < 0)))) + return res; + else + return res + 1; +} + +/** + * Answers the most positive (i.e. closest to positive infinity) + * integer value which is less than the number obtained by dividing + * the first argument p by the second argument q. + * + * @param p numerator + * @param q denominator (must be different from zero) + * @return the floor of the rational number p / q. + */ +public static int floor(int p, int q) { + int res = p / q; + if ((p % q == 0) || + (res > 0) || + ((res == 0) && ((p > 0 && q > 0) || (p < 0 && q < 0)))) + return res; + else + return res - 1; +} + +/** + * Answers the result of rounding to the closest integer the number obtained + * by dividing the first argument p by the second argument q. + *+ * IMPORTANT: the j2me version has an additional restriction on + * the arguments. p must be within the range 0 - 32767 (inclusive). + * q must be within the range 1 - 32767 (inclusive). + *
+ * + * @param p numerator + * @param q denominator (must be different from zero) + * @return the closest integer to the rational number p / q + */ +public static int round(int p, int q) { + if (p < 0 || p > 32767 || q < 1 || q > 32767) { + SWT.error(SWT.ERROR_INVALID_RANGE); + } + return (2 * p + q) / (2 * q); +} + +/** + * Returns 2 raised to the power of the argument. + * + * @param n an int value between 0 and 30 (inclusive) + * @return 2 raised to the power of the argument + * + * @exception IllegalArgumentExceptionnull
+ * @exception IOException
+ *
+ * @since 3.4
+ */
+public static OutputStream newDeflaterOutputStream(OutputStream stream) throws IOException {
+ return null;
+}
+
+/**
+ * Open a file if such things are supported.
+ *
+ * @param filename the name of the file to open
+ * @return a stream on the file if it could be opened.
+ */
+public static InputStream newFileInputStream(String filename) throws IOException {
+ return getDelegate().getInputStreamFromFile(filename);
+}
+
+/**
+ * Open a file if such things are supported.
+ *
+ * @param filename the name of the file to open
+ * @return a stream on the file if it could be opened.
+ */
+public static OutputStream newFileOutputStream(String filename) throws IOException {
+ return getDelegate().getOutStreamFromFile(filename);
+}
+
+/**
+ * Create an InflaterInputStream if such things are supported.
+ *
+ * @param stream the input stream
+ * @return a inflater stream or null
+ * @exception IOException
+ *
+ * @since 3.3
+ */
+public static InputStream newInflaterInputStream(InputStream stream) throws IOException {
+ return null;
+}
+
+/**
+ * Answers whether the character is a letter.
+ *
+ * @param c the character
+ * @return true when the character is a letter
+ */
+public static boolean isLetter(char c) {
+ return (Character.isUpperCase(c)) || (Character.isLowerCase(c));
+}
+
+/**
+ * Answers whether the character is a letter or a digit.
+ *
+ * @param c the character
+ * @return true when the character is a letter or a digit
+ */
+public static boolean isLetterOrDigit(char c) {
+ return isLetter(c) || Character.isDigit(c);
+}
+
+/**
+ * Answers whether the character is a Unicode space character.
+ *
+ * @param c the character
+ * @return true when the character is a Unicode space character
+ */
+public static boolean isSpaceChar(char c) {
+ return c == ' ';
+}
+
+/**
+ * Answers whether the character is whitespace character.
+ *
+ * @param c the character
+ * @return true when the character is a whitespace character
+ */
+public static boolean isWhitespace(char c) {
+ // Optimized case for ASCII
+ if ((c >= 0x1c && c <= 0x20) || (c >= 0x9 && c <= 0xd))
+ return true;
+ return false;
+}
+
+/**
+ * Execute a program in a separate platform process if the
+ * underlying platform support this.
+ * + * The new process inherits the environment of the caller. + *
+ * + * @param program the name of the program to execute + * + * @exception IOException + * if the program cannot be executed + * @exception SecurityException + * if the current SecurityManager disallows program execution + */ +public static void exec(String prog) throws java.io.IOException { + throw new IOException(); +} + +/** + * Answers whether the indicated file exists or not. + * + * @param parent the file's parent directory + * @param child the file's name + * @return true if the file exists + */ +public static boolean fileExists(String parent, String child) { + return false; +} + +/** + * Execute progArray[0] in a separate platform process if the + * underlying platform support this. + *+ * The new process inherits the environment of the caller. + *
+ * + * @param progArray array containing the program to execute and its arguments + * + * @exception IOException + * if the program cannot be executed + * @exception SecurityException + * if the current SecurityManager disallows program execution + */ +public static void exec(String[] progArray) throws java.io.IOException{ + throw new IOException(); +} + +/** + * Returns the NLS'ed message for the given argument. This is only being + * called from SWT. + * + * @param key the key to look up + * @return the message for the given key + * + * @see SWT#getMessage + */ +public static String getMessage(String key) { + + if (key == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); + + if(key.equals("ok")){ + iRes = ResourceLoader.getInstance("eswtcore", "qtn_eswt_softkey_"); + return iRes.format(key).toString(); + } + + if(key.equals("cancel")){ + iRes = ResourceLoader.getInstance("eswtcore", "qtn_eswt_softkey_"); + return iRes.format(key).toString(); + } + + if(key.equals("fetch_url")){ + iRes = ResourceLoader.getInstance("eswtmobile", "qtn_eswt_option_"); + return iRes.format(key).toString(); + } + + if(key.equals("fetch_email")){ + iRes = ResourceLoader.getInstance("eswtmobile", "qtn_eswt_option_pb_"); + return iRes.format(key).toString(); + } + + if(key.equals("dialog_title")){ + iRes = ResourceLoader.getInstance("eswtmobile", "qtn_eswt_favorites_"); + return iRes.format(key).toString(); + } + + return key; +} + +public static String getMessage(String key, Object[] args) { + if (key == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); + if (key.equals("SWT_Download_File")) return "Download: "+args[0]; //$NON-NLS-1$ + if (key.equals("SWT_Download_Location")) return "Saving "+args[0]+" from "+args[1]; //$NON-NLS-1$ + if (key.equals("SWT_Download_Status")) return "Download: "+args[0]+" KB of "+args[1]+" KB"; //$NON-NLS-1$ + return key; +} + +/** + * Interrupt the current thread. + *
+ * Note that this is not available on CLDC. + *
+ */ +public static void interrupt() { +} + +/** + * Compares two instances of class String ignoring the case of the + * characters and answers if they are equal. + * + * @param s1 string + * @param s2 string + * @return true if the two instances of class String are equal + */ +public static boolean equalsIgnoreCase(String s1, String s2) { + if (s1 == s2) return true; + if (s2 == null || s1.length() != s2.length()) return false; + + char[] cArray1 = s1.toCharArray(); + char[] cArray2 = s2.toCharArray(); + int length = s1.length(); + char c1, c2; + + for (int index = 0; index < length; index++) { + c1 = cArray1[index]; + c2 = cArray2[index]; + if (c1 != c2 && + Character.toUpperCase(c1) != Character.toUpperCase(c2) && + Character.toLowerCase(c1) != Character.toLowerCase(c2)) { + return false; + } + } + return true; +} + +}