Examples with WeakHashMap java.util.WeakHashMap used on opensource projects

Example 46 with WeakHashMap

use of java.util.WeakHashMap in project robovm by robovm.

the class WeakHashMapTest method test_size.

/**
     * java.util.WeakHashMap#size()
     */
public void test_size() {
    whm = new WeakHashMap();
    assertEquals(0, whm.size());
}

Example 47 with WeakHashMap

use of java.util.WeakHashMap in project intellij-community by JetBrains.

the class IdeaHelpBroker method createHelpWindow.

private synchronized void createHelpWindow() {
    JDialog tmpDialog = null;
    Dimension size = null;
    Point pos = null;
    boolean resize = false;
    createJHelp();
    // Get the title from the HelpSet
    String helpTitle = myHelpSet.getTitle();
    if (myModallyActivated) {
        // replace dialog.getOwner() with the following code
        Window owner = null;
        try {
            Method m = Window.class.getMethod("getOwner", null);
            if (m != null && myDialog != null) {
                owner = (Window) m.invoke(myDialog, null);
            }
        } catch (NoSuchMethodError | NoSuchMethodException ex) {
        // as in JDK1.1
        } catch (InvocationTargetException | IllegalAccessException ex) {
        //
        }
        if (myDialog == null || owner != myOwnerWindow || modalDeactivated) {
            if (myFrame != null) {
                pos = myFrame.getLocation();
                size = myFrame.getSize();
                myFrame.dispose();
            }
            if (myDialog != null) {
                pos = myDialog.getLocation();
                size = myDialog.getSize();
                tmpDialog = myDialog;
            }
            myDialog = new JDialog((Dialog) myOwnerWindow, helpTitle);
            // Modal dialogs are really tricky. When the modal dialog
            // is dismissed the JDialog will be dismissed as well.
            // When that happens we need to make sure the ownerWindow
            // is set to null so that a new dialog will be created so
            // that events aren't blocked in the HelpViewer.
            dl = new WindowAdapter() {

                public void windowClosing(WindowEvent e) {
                    // JDK1.2.1 bug not closing owned windows
                    if (myDialog.isShowing()) {
                        myDialog.hide();
                    }
                    if (myOwnerWindow != null) {
                        myOwnerWindow.removeWindowListener(dl);
                    }
                    myOwnerWindow = null;
                    modalDeactivated = true;
                }
            };
            myOwnerWindow.addWindowListener(dl);
            modalDeactivated = false;
            if (size != null) {
                myDialog.setSize(size);
            } else {
                myDialog.setSize(HELP_WIDTH, HELP_HEIGHT);
            }
            if (pos != null) {
                myDialog.setLocation(pos);
            }
            myDialog.getContentPane().add(jhelp);
            if (tmpDialog != null) {
                tmpDialog.dispose();
            }
        }
    } else {
        if (myFrame == null) {
            myFrame = new JFrame(helpTitle);
            resize = true;
            AppUIUtil.updateWindowIcon(myFrame);
            WindowListener l = new WindowAdapter() {

                public void windowClosing(WindowEvent e) {
                    myFrame.dispose();
                    WeakHashMap handlers = ReflectionUtil.getField(JHelpPrintHandler.class, null, WeakHashMap.class, "handlers");
                    if (handlers != null) {
                        // even though jHelp is a weak key in the map, corresponding map entry will never be removed, as it's also referenced 
                        // from the mapped value
                        handlers.remove(jhelp);
                    }
                }
            };
            myFrame.addWindowListener(l);
        } else {
            pos = myFrame.getLocation();
        }
        if (myDialog != null) {
            pos = myDialog.getLocation();
            size = myDialog.getSize();
            myDialog.dispose();
            myDialog = null;
            myOwnerWindow = null;
        }
        if (size != null) {
            myFrame.setSize(size);
        } else if (resize) {
            myFrame.setSize(HELP_WIDTH, HELP_HEIGHT);
        }
        if (pos != null) {
            myFrame.setLocation(pos);
        }
        myFrame.getContentPane().add(jhelp);
        myFrame.setTitle(myHelpSet.getTitle());
    }
}

Example 48 with WeakHashMap

use of java.util.WeakHashMap in project robovm by robovm.

the class OldAttributedStringTest method test_ConstructorLjava_lang_StringLjava_util_Map.

/**
     * java.text.AttributedString#AttributedString(AttributedCharacterIterator,
     *        int, int, Map<? extends AttributedCharacterIterator.Attribute,?>)
     *        Test of method
     *        java.text.AttributedString#AttributedString(AttributedCharacterIterator,
     *        int, int, Map<? extends
     *        AttributedCharacterIterator.Attribute,?>). Case 1: Try to
     *        construct AttributedString. Case 2: Try to construct
     *        AttributedString using 0-length text and not an empty Map
     *        attributes.
     */
public void test_ConstructorLjava_lang_StringLjava_util_Map() {
    String test = "Test string";
    // case 1: Try to construct AttributedString
    try {
        AttributedString attrString = new AttributedString(test, new WeakHashMap<AttributedCharacterIterator.Attribute, String>());
        AttributedCharacterIterator it = attrString.getIterator();
        StringBuffer buf = new StringBuffer();
        buf.append(it.first());
        char ch;
        while ((ch = it.next()) != CharacterIterator.DONE) buf.append(ch);
        assertTrue("Wrong string: " + buf, buf.toString().equals(test));
    } catch (Exception e) {
        fail("Unexpected exception " + e.toString());
    }
    // not an empty Map attributes.
    try {
        Map<AttributedCharacterIterator.Attribute, String> whm = new WeakHashMap<AttributedCharacterIterator.Attribute, String>();
        whm.put(new TestAttributedCharacterIteratorAttribute("test"), "value");
        new AttributedString("", whm);
        fail("Expected IllegalArgumentException was not thrown");
    } catch (Exception e) {
    // expected
    }
}

Example 49 with WeakHashMap

use of java.util.WeakHashMap in project jdk8u_jdk by JetBrains.

the class ColorModel method getGray16TosRGB8LUT.

/*
     * Return a byte LUT that converts 16-bit gray values in the grayCS
     * ColorSpace to the appropriate 8-bit sRGB value.  I.e., if lut
     * is the byte array returned by this method and sval = lut[gval],
     * then the sRGB triple (sval,sval,sval) is the best match to gval.
     * Cache references to any computed LUT in a Map.
     */
static byte[] getGray16TosRGB8LUT(ICC_ColorSpace grayCS) {
    if (isLinearGRAYspace(grayCS)) {
        return getLinearRGB16TosRGB8LUT();
    }
    if (g16Tos8Map != null) {
        byte[] g16Tos8LUT = g16Tos8Map.get(grayCS);
        if (g16Tos8LUT != null) {
            return g16Tos8LUT;
        }
    }
    short[] tmp = new short[65536];
    for (int i = 0; i <= 65535; i++) {
        tmp[i] = (short) i;
    }
    ColorTransform[] transformList = new ColorTransform[2];
    PCMM mdl = CMSManager.getModule();
    ICC_ColorSpace srgbCS = (ICC_ColorSpace) ColorSpace.getInstance(ColorSpace.CS_sRGB);
    transformList[0] = mdl.createTransform(grayCS.getProfile(), ColorTransform.Any, ColorTransform.In);
    transformList[1] = mdl.createTransform(srgbCS.getProfile(), ColorTransform.Any, ColorTransform.Out);
    ColorTransform t = mdl.createTransform(transformList);
    tmp = t.colorConvert(tmp, null);
    byte[] g16Tos8LUT = new byte[65536];
    for (int i = 0, j = 2; i <= 65535; i++, j += 3) {
        // All three components of tmp should be equal, since
        // the input color space to colorConvert is a gray scale
        // space.  However, there are slight anomalies in the results.
        // Copy tmp starting at index 2, since colorConvert seems
        // to be slightly more accurate for the third component!
        // scale unsigned short (0 - 65535) to unsigned byte (0 - 255)
        g16Tos8LUT[i] = (byte) (((float) (tmp[j] & 0xffff)) * (1.0f / 257.0f) + 0.5f);
    }
    if (g16Tos8Map == null) {
        g16Tos8Map = Collections.synchronizedMap(new WeakHashMap<ICC_ColorSpace, byte[]>(2));
    }
    g16Tos8Map.put(grayCS, g16Tos8LUT);
    return g16Tos8LUT;
}

Example 50 with WeakHashMap

use of java.util.WeakHashMap in project jdk8u_jdk by JetBrains.

the class ColorModel method getLinearGray16ToOtherGray8LUT.

/*
     * Return a byte LUT that converts 16-bit gray values in the CS_GRAY
     * linear gray ColorSpace to the appropriate 8-bit value in the
     * grayCS ColorSpace.  Cache references to any computed LUT in a Map.
     */
static byte[] getLinearGray16ToOtherGray8LUT(ICC_ColorSpace grayCS) {
    if (lg16Toog8Map != null) {
        byte[] lg16Toog8LUT = lg16Toog8Map.get(grayCS);
        if (lg16Toog8LUT != null) {
            return lg16Toog8LUT;
        }
    }
    short[] tmp = new short[65536];
    for (int i = 0; i <= 65535; i++) {
        tmp[i] = (short) i;
    }
    ColorTransform[] transformList = new ColorTransform[2];
    PCMM mdl = CMSManager.getModule();
    ICC_ColorSpace lgCS = (ICC_ColorSpace) ColorSpace.getInstance(ColorSpace.CS_GRAY);
    transformList[0] = mdl.createTransform(lgCS.getProfile(), ColorTransform.Any, ColorTransform.In);
    transformList[1] = mdl.createTransform(grayCS.getProfile(), ColorTransform.Any, ColorTransform.Out);
    ColorTransform t = mdl.createTransform(transformList);
    tmp = t.colorConvert(tmp, null);
    byte[] lg16Toog8LUT = new byte[65536];
    for (int i = 0; i <= 65535; i++) {
        // scale unsigned short (0 - 65535) to unsigned byte (0 - 255)
        lg16Toog8LUT[i] = (byte) (((float) (tmp[i] & 0xffff)) * (1.0f / 257.0f) + 0.5f);
    }
    if (lg16Toog8Map == null) {
        lg16Toog8Map = Collections.synchronizedMap(new WeakHashMap<ICC_ColorSpace, byte[]>(2));
    }
    lg16Toog8Map.put(grayCS, lg16Toog8LUT);
    return lg16Toog8LUT;
}