| /* |
| * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt; |
| |
| import java.util.Collections; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.HashMap; |
| import java.awt.AWTEvent; |
| import java.awt.AWTException; |
| import java.awt.Component; |
| import java.awt.Container; |
| import java.awt.EventQueue; |
| import java.awt.Window; |
| import java.awt.im.InputMethodHighlight; |
| import java.awt.im.spi.InputMethodContext; |
| import sun.awt.im.InputMethodAdapter; |
| import java.awt.event.InputMethodEvent; |
| import java.awt.font.TextAttribute; |
| import java.awt.font.TextHitInfo; |
| import java.awt.peer.ComponentPeer; |
| import java.lang.Character.Subset; |
| import java.text.AttributedString; |
| import java.text.AttributedCharacterIterator; |
| |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.lang.ref.WeakReference; |
| import sun.util.logging.PlatformLogger; |
| import java.util.StringTokenizer; |
| import java.util.regex.Pattern; |
| |
| |
| /** |
| * Input Method Adapter for XIM |
| * |
| * @author JavaSoft International |
| */ |
| public abstract class X11InputMethod extends InputMethodAdapter { |
| private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.X11InputMethod"); |
| /* |
| * The following XIM* values must be the same as those defined in |
| * Xlib.h |
| */ |
| private static final int XIMReverse = (1<<0); |
| private static final int XIMUnderline = (1<<1); |
| private static final int XIMHighlight = (1<<2); |
| private static final int XIMPrimary = (1<<5); |
| private static final int XIMSecondary = (1<<6); |
| private static final int XIMTertiary = (1<<7); |
| |
| /* |
| * visible position values |
| */ |
| private static final int XIMVisibleToForward = (1<<8); |
| private static final int XIMVisibleToBackward = (1<<9); |
| private static final int XIMVisibleCenter = (1<<10); |
| private static final int XIMVisibleMask = (XIMVisibleToForward| |
| XIMVisibleToBackward| |
| XIMVisibleCenter); |
| |
| private Locale locale; |
| private static boolean isXIMOpened = false; |
| protected Container clientComponentWindow = null; |
| private Component awtFocussedComponent = null; |
| private Component lastXICFocussedComponent = null; |
| private boolean isLastXICActive = false; |
| private boolean isLastTemporary = false; |
| private boolean isActive = false; |
| private boolean isActiveClient = false; |
| private static Map<TextAttribute, ?>[] highlightStyles; |
| private boolean disposed = false; |
| |
| //reset the XIC if necessary |
| private boolean needResetXIC = false; |
| private WeakReference<Component> needResetXICClient = new WeakReference<>(null); |
| |
| // The use of compositionEnableSupported is to reduce unnecessary |
| // native calls if set/isCompositionEnabled |
| // throws UnsupportedOperationException. |
| // It is set to false if that exception is thrown first time |
| // either of the two methods are called. |
| private boolean compositionEnableSupported = true; |
| // The savedCompositionState indicates the composition mode when |
| // endComposition or setCompositionEnabled is called. It doesn't always |
| // reflect the actual composition state because it doesn't get updated |
| // when the user changes the composition state through direct interaction |
| // with the input method. It is used to save the composition mode when |
| // focus is traversed across different client components sharing the |
| // same java input context. Also if set/isCompositionEnabled are not |
| // supported, it remains false. |
| private boolean savedCompositionState = false; |
| |
| // variables to keep track of preedit context. |
| // these variables need to be accessed within AWT_LOCK/UNLOCK |
| private String committedText = null; |
| private StringBuffer composedText = null; |
| private IntBuffer rawFeedbacks; |
| |
| // private data (X11InputMethodData structure defined in |
| // awt_InputMethod.c) for native methods |
| // this structure needs to be accessed within AWT_LOCK/UNLOCK |
| private transient long pData = 0; // accessed by native |
| |
| // Initialize highlight mapping table |
| static { |
| @SuppressWarnings({"unchecked", "rawtypes"}) |
| Map<TextAttribute, ?> styles[] = new Map[4]; |
| HashMap<TextAttribute, Object> map; |
| |
| // UNSELECTED_RAW_TEXT_HIGHLIGHT |
| map = new HashMap<>(1); |
| map.put(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD); |
| styles[0] = Collections.unmodifiableMap(map); |
| |
| // SELECTED_RAW_TEXT_HIGHLIGHT |
| map = new HashMap<>(1); |
| map.put(TextAttribute.SWAP_COLORS, TextAttribute.SWAP_COLORS_ON); |
| styles[1] = Collections.unmodifiableMap(map); |
| |
| // UNSELECTED_CONVERTED_TEXT_HIGHLIGHT |
| map = new HashMap<>(1); |
| map.put(TextAttribute.INPUT_METHOD_UNDERLINE, |
| TextAttribute.UNDERLINE_LOW_ONE_PIXEL); |
| styles[2] = Collections.unmodifiableMap(map); |
| |
| // SELECTED_CONVERTED_TEXT_HIGHLIGHT |
| map = new HashMap<>(1); |
| map.put(TextAttribute.SWAP_COLORS, TextAttribute.SWAP_COLORS_ON); |
| styles[3] = Collections.unmodifiableMap(map); |
| |
| highlightStyles = styles; |
| } |
| |
| static { |
| initIDs(); |
| } |
| |
| /** |
| * Initialize JNI field and method IDs for fields that may be |
| accessed from C. |
| */ |
| private static native void initIDs(); |
| |
| /** |
| * Constructs an X11InputMethod instance. It initializes the XIM |
| * environment if it's not done yet. |
| * |
| * @exception AWTException if XOpenIM() failed. |
| */ |
| public X11InputMethod() throws AWTException { |
| // supports only the locale in which the VM is started |
| locale = X11InputMethodDescriptor.getSupportedLocale(); |
| if (initXIM() == false) { |
| throw new AWTException("Cannot open X Input Method"); |
| } |
| } |
| |
| @SuppressWarnings("deprecation") |
| protected void finalize() throws Throwable { |
| dispose(); |
| super.finalize(); |
| } |
| |
| /** |
| * Invokes openIM() that invokes XOpenIM() if it's not opened yet. |
| * @return true if openXIM() is successful or it's already been opened. |
| */ |
| private synchronized boolean initXIM() { |
| if (isXIMOpened == false) |
| isXIMOpened = openXIM(); |
| return isXIMOpened; |
| } |
| |
| protected abstract boolean openXIM(); |
| |
| protected boolean isDisposed() { |
| return disposed; |
| } |
| |
| protected abstract void setXICFocus(ComponentPeer peer, |
| boolean value, boolean active); |
| |
| /** |
| * Does nothing - this adapter doesn't use the input method context. |
| * |
| * @see java.awt.im.spi.InputMethod#setInputMethodContext |
| */ |
| public void setInputMethodContext(InputMethodContext context) { |
| } |
| |
| /** |
| * Set locale to input. If input method doesn't support specified locale, |
| * false will be returned and its behavior is not changed. |
| * |
| * @param lang locale to input |
| * @return the true is returned when specified locale is supported. |
| */ |
| public boolean setLocale(Locale lang) { |
| if (lang.equals(locale)) { |
| return true; |
| } |
| // special compatibility rule for Japanese and Korean |
| if (locale.equals(Locale.JAPAN) && lang.equals(Locale.JAPANESE) || |
| locale.equals(Locale.KOREA) && lang.equals(Locale.KOREAN)) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns current input locale. |
| */ |
| public Locale getLocale() { |
| return locale; |
| } |
| |
| /** |
| * Does nothing - XIM doesn't let you specify which characters you expect. |
| * |
| * @see java.awt.im.spi.InputMethod#setCharacterSubsets |
| */ |
| public void setCharacterSubsets(Subset[] subsets) { |
| } |
| |
| /** |
| * Dispatch event to input method. InputContext dispatch event with this |
| * method. Input method set consume flag if event is consumed in |
| * input method. |
| * |
| * @param e event |
| */ |
| public void dispatchEvent(AWTEvent e) { |
| } |
| |
| |
| protected final void resetXICifneeded(){ |
| /* needResetXIC is used to indicate whether to call |
| resetXIC on the active client. resetXIC will always be |
| called on the passive client when endComposition is called. |
| */ |
| if (needResetXIC && haveActiveClient() && |
| getClientComponent() != needResetXICClient.get()){ |
| resetXIC(); |
| |
| // needs to reset the last xic focussed component. |
| lastXICFocussedComponent = null; |
| isLastXICActive = false; |
| |
| needResetXICClient.clear(); |
| needResetXIC = false; |
| } |
| } |
| |
| /** |
| * Reset the composition state to the current composition state. |
| */ |
| private void resetCompositionState() { |
| if (compositionEnableSupported) { |
| try { |
| /* Restore the composition mode to the last saved composition |
| mode. */ |
| setCompositionEnabled(savedCompositionState); |
| } catch (UnsupportedOperationException e) { |
| compositionEnableSupported = false; |
| } |
| } |
| } |
| |
| /** |
| * Query and then return the current composition state. |
| * @return the composition state if isCompositionEnabled call |
| * is successful. Otherwise, it returns false. |
| */ |
| private boolean getCompositionState() { |
| boolean compositionState = false; |
| if (compositionEnableSupported) { |
| try { |
| compositionState = isCompositionEnabled(); |
| } catch (UnsupportedOperationException e) { |
| compositionEnableSupported = false; |
| } |
| } |
| return compositionState; |
| } |
| |
| /** |
| * Activate input method. |
| */ |
| public synchronized void activate() { |
| clientComponentWindow = getClientComponentWindow(); |
| if (clientComponentWindow == null) |
| return; |
| |
| if (lastXICFocussedComponent != null){ |
| if (log.isLoggable(PlatformLogger.Level.FINE)) { |
| log.fine("XICFocused {0}, AWTFocused {1}", |
| lastXICFocussedComponent, awtFocussedComponent); |
| } |
| } |
| |
| if (pData == 0) { |
| if (!createXIC()) { |
| return; |
| } |
| disposed = false; |
| } |
| |
| /* reset input context if necessary and set the XIC focus |
| */ |
| resetXICifneeded(); |
| ComponentPeer lastXICFocussedComponentPeer = null; |
| ComponentPeer awtFocussedComponentPeer = getPeer(awtFocussedComponent); |
| |
| if (lastXICFocussedComponent != null) { |
| lastXICFocussedComponentPeer = getPeer(lastXICFocussedComponent); |
| } |
| |
| /* If the last XIC focussed component has a different peer as the |
| current focussed component, change the XIC focus to the newly |
| focussed component. |
| */ |
| if (isLastTemporary || lastXICFocussedComponentPeer != awtFocussedComponentPeer || |
| isLastXICActive != haveActiveClient()) { |
| if (lastXICFocussedComponentPeer != null) { |
| setXICFocus(lastXICFocussedComponentPeer, false, isLastXICActive); |
| } |
| if (awtFocussedComponentPeer != null) { |
| setXICFocus(awtFocussedComponentPeer, true, haveActiveClient()); |
| } |
| lastXICFocussedComponent = awtFocussedComponent; |
| isLastXICActive = haveActiveClient(); |
| } |
| resetCompositionState(); |
| isActive = true; |
| } |
| |
| protected abstract boolean createXIC(); |
| |
| /** |
| * Deactivate input method. |
| */ |
| public synchronized void deactivate(boolean isTemporary) { |
| boolean isAc = haveActiveClient(); |
| /* Usually as the client component, let's call it component A, |
| loses the focus, this method is called. Then when another client |
| component, let's call it component B, gets the focus, activate is first called on |
| the previous focused compoent which is A, then endComposition is called on A, |
| deactivate is called on A again. And finally activate is called on the newly |
| focused component B. Here is the call sequence. |
| |
| A loses focus B gains focus |
| -------------> deactivate A -------------> activate A -> endComposition A -> |
| deactivate A -> activate B ----.... |
| |
| So in order to carry the composition mode across the components sharing the same |
| input context, we save it when deactivate is called so that when activate is |
| called, it can be restored correctly till activate is called on the newly focused |
| component. (See also sun/awt/im/InputContext and bug 6184471). |
| Last note, getCompositionState should be called before setXICFocus since |
| setXICFocus here sets the XIC to 0. |
| */ |
| savedCompositionState = getCompositionState(); |
| |
| if (isTemporary){ |
| //turn the status window off... |
| turnoffStatusWindow(); |
| } |
| |
| /* Delay resetting the XIC focus until activate is called and the newly |
| focussed component has a different peer as the last focussed component. |
| */ |
| lastXICFocussedComponent = awtFocussedComponent; |
| isLastXICActive = isAc; |
| isLastTemporary = isTemporary; |
| isActive = false; |
| } |
| |
| /** |
| * Explicitly disable the native IME. Native IME is not disabled when |
| * deactivate is called. |
| */ |
| public void disableInputMethod() { |
| if (lastXICFocussedComponent != null) { |
| setXICFocus(getPeer(lastXICFocussedComponent), false, isLastXICActive); |
| lastXICFocussedComponent = null; |
| isLastXICActive = false; |
| |
| resetXIC(); |
| needResetXICClient.clear(); |
| needResetXIC = false; |
| } |
| } |
| |
| // implements java.awt.im.spi.InputMethod.hideWindows |
| public void hideWindows() { |
| // ??? need real implementation |
| } |
| |
| /** |
| * @see java.awt.Toolkit#mapInputMethodHighlight |
| */ |
| public static Map<TextAttribute, ?> mapInputMethodHighlight(InputMethodHighlight highlight) { |
| int index; |
| int state = highlight.getState(); |
| if (state == InputMethodHighlight.RAW_TEXT) { |
| index = 0; |
| } else if (state == InputMethodHighlight.CONVERTED_TEXT) { |
| index = 2; |
| } else { |
| return null; |
| } |
| if (highlight.isSelected()) { |
| index += 1; |
| } |
| return highlightStyles[index]; |
| } |
| |
| /** |
| * @see sun.awt.im.InputMethodAdapter#setAWTFocussedComponent |
| */ |
| protected void setAWTFocussedComponent(Component component) { |
| if (component == null) { |
| return; |
| } |
| if (isActive) { |
| // deactivate/activate are being suppressed during a focus change - |
| // this may happen when an input method window is made visible |
| boolean ac = haveActiveClient(); |
| setXICFocus(getPeer(awtFocussedComponent), false, ac); |
| setXICFocus(getPeer(component), true, ac); |
| } |
| awtFocussedComponent = component; |
| } |
| |
| /** |
| * @see sun.awt.im.InputMethodAdapter#stopListening |
| */ |
| protected void stopListening() { |
| // It is desirable to disable XIM by calling XSetICValues with |
| // XNPreeditState == XIMPreeditDisable. But Solaris 2.6 and |
| // Solaris 7 do not implement this correctly without a patch, |
| // so just call resetXIC here. Prior endComposition call commits |
| // the existing composed text. |
| endComposition(); |
| // disable the native input method so that the other input |
| // method could get the input focus. |
| disableInputMethod(); |
| if (needResetXIC) { |
| resetXIC(); |
| needResetXICClient.clear(); |
| needResetXIC = false; |
| } |
| } |
| |
| /** |
| * Returns the Window instance in which the client component is |
| * contained. If not found, null is returned. (IS THIS POSSIBLE?) |
| */ |
| // NOTE: This method may be called by privileged threads. |
| // DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
| private Window getClientComponentWindow() { |
| Component client = getClientComponent(); |
| Container container; |
| |
| if (client instanceof Container) { |
| container = (Container) client; |
| } else { |
| container = getParent(client); |
| } |
| |
| while (container != null && !(container instanceof java.awt.Window)) { |
| container = getParent(container); |
| } |
| return (Window) container; |
| } |
| |
| protected abstract Container getParent(Component client); |
| |
| /** |
| * Returns peer of the given client component. If the given client component |
| * doesn't have peer, peer of the native container of the client is returned. |
| */ |
| protected abstract ComponentPeer getPeer(Component client); |
| |
| /** |
| * Used to protect preedit data |
| */ |
| protected abstract void awtLock(); |
| protected abstract void awtUnlock(); |
| |
| /** |
| * Creates an input method event from the arguments given |
| * and posts it on the AWT event queue. For arguments, |
| * see InputMethodEvent. Called by input method. |
| * |
| * @see java.awt.event.InputMethodEvent#InputMethodEvent |
| */ |
| private void postInputMethodEvent(int id, |
| AttributedCharacterIterator text, |
| int committedCharacterCount, |
| TextHitInfo caret, |
| TextHitInfo visiblePosition, |
| long when) { |
| Component source = getClientComponent(); |
| if (source != null) { |
| InputMethodEvent event = new InputMethodEvent(source, |
| id, when, text, committedCharacterCount, caret, visiblePosition); |
| SunToolkit.postEvent(SunToolkit.targetToAppContext(source), (AWTEvent)event); |
| } |
| } |
| |
| private void postInputMethodEvent(int id, |
| AttributedCharacterIterator text, |
| int committedCharacterCount, |
| TextHitInfo caret, |
| TextHitInfo visiblePosition) { |
| postInputMethodEvent(id, text, committedCharacterCount, |
| caret, visiblePosition, EventQueue.getMostRecentEventTime()); |
| } |
| |
| /** |
| * Dispatches committed text from XIM to the awt event queue. This |
| * method is invoked from the event handler in canvas.c in the |
| * AWT Toolkit thread context and thus inside the AWT Lock. |
| * @param str committed text |
| * @param when when |
| */ |
| // NOTE: This method may be called by privileged threads. |
| // This functionality is implemented in a package-private method |
| // to insure that it cannot be overridden by client subclasses. |
| // DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
| void dispatchCommittedText(String str, long when) { |
| if (str == null) |
| return; |
| |
| if (composedText == null) { |
| AttributedString attrstr = new AttributedString(str); |
| postInputMethodEvent(InputMethodEvent.INPUT_METHOD_TEXT_CHANGED, |
| attrstr.getIterator(), |
| str.length(), |
| null, |
| null, |
| when); |
| } else { |
| // if there is composed text, wait until the preedit |
| // callback is invoked. |
| committedText = str; |
| } |
| } |
| |
| private void dispatchCommittedText(String str) { |
| dispatchCommittedText(str, EventQueue.getMostRecentEventTime()); |
| } |
| |
| /** |
| * Updates composed text with XIM preedit information and |
| * posts composed text to the awt event queue. The args of |
| * this method correspond to the XIM preedit callback |
| * information. The XIM highlight attributes are translated via |
| * fixed mapping (i.e., independent from any underlying input |
| * method engine). This method is invoked in the AWT Toolkit |
| * (X event loop) thread context and thus inside the AWT Lock. |
| */ |
| // NOTE: This method may be called by privileged threads. |
| // This functionality is implemented in a package-private method |
| // to insure that it cannot be overridden by client subclasses. |
| // DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
| void dispatchComposedText(String chgText, |
| int chgStyles[], |
| int chgOffset, |
| int chgLength, |
| int caretPosition, |
| long when) { |
| if (disposed) { |
| return; |
| } |
| |
| //Workaround for deadlock bug on solaris2.6_zh bug#4170760 |
| if (chgText == null |
| && chgStyles == null |
| && chgOffset == 0 |
| && chgLength == 0 |
| && caretPosition == 0 |
| && composedText == null |
| && committedText == null) |
| return; |
| |
| if (composedText == null) { |
| // TODO: avoid reallocation of those buffers |
| composedText = new StringBuffer(INITIAL_SIZE); |
| rawFeedbacks = new IntBuffer(INITIAL_SIZE); |
| } |
| if (chgLength > 0) { |
| if (chgText == null && chgStyles != null) { |
| rawFeedbacks.replace(chgOffset, chgStyles); |
| } else { |
| if (chgLength == composedText.length()) { |
| // optimization for the special case to replace the |
| // entire previous text |
| composedText = new StringBuffer(INITIAL_SIZE); |
| rawFeedbacks = new IntBuffer(INITIAL_SIZE); |
| } else { |
| if (composedText.length() > 0) { |
| if (chgOffset+chgLength < composedText.length()) { |
| String text; |
| text = composedText.toString().substring(chgOffset+chgLength, |
| composedText.length()); |
| composedText.setLength(chgOffset); |
| composedText.append(text); |
| } else { |
| // in case to remove substring from chgOffset |
| // to the end |
| composedText.setLength(chgOffset); |
| } |
| rawFeedbacks.remove(chgOffset, chgLength); |
| } |
| } |
| } |
| } |
| if (chgText != null) { |
| composedText.insert(chgOffset, chgText); |
| if (chgStyles != null) |
| rawFeedbacks.insert(chgOffset, chgStyles); |
| } |
| |
| if (composedText.length() == 0) { |
| composedText = null; |
| rawFeedbacks = null; |
| |
| // if there is any outstanding committed text stored by |
| // dispatchCommittedText(), it has to be sent to the |
| // client component. |
| if (committedText != null) { |
| dispatchCommittedText(committedText, when); |
| committedText = null; |
| return; |
| } |
| |
| // otherwise, send null text to delete client's composed |
| // text. |
| postInputMethodEvent(InputMethodEvent.INPUT_METHOD_TEXT_CHANGED, |
| null, |
| 0, |
| null, |
| null, |
| when); |
| |
| return; |
| } |
| |
| // Now sending the composed text to the client |
| int composedOffset; |
| AttributedString inputText; |
| |
| // if there is any partially committed text, concatenate it to |
| // the composed text. |
| if (committedText != null) { |
| composedOffset = committedText.length(); |
| inputText = new AttributedString(committedText + composedText); |
| committedText = null; |
| } else { |
| composedOffset = 0; |
| inputText = new AttributedString(composedText.toString()); |
| } |
| |
| int currentFeedback; |
| int nextFeedback; |
| int startOffset = 0; |
| int currentOffset; |
| int visiblePosition = 0; |
| TextHitInfo visiblePositionInfo = null; |
| |
| rawFeedbacks.rewind(); |
| currentFeedback = rawFeedbacks.getNext(); |
| rawFeedbacks.unget(); |
| while ((nextFeedback = rawFeedbacks.getNext()) != -1) { |
| if (visiblePosition == 0) { |
| visiblePosition = nextFeedback & XIMVisibleMask; |
| if (visiblePosition != 0) { |
| int index = rawFeedbacks.getOffset() - 1; |
| |
| if (visiblePosition == XIMVisibleToBackward) |
| visiblePositionInfo = TextHitInfo.leading(index); |
| else |
| visiblePositionInfo = TextHitInfo.trailing(index); |
| } |
| } |
| nextFeedback &= ~XIMVisibleMask; |
| if (currentFeedback != nextFeedback) { |
| rawFeedbacks.unget(); |
| currentOffset = rawFeedbacks.getOffset(); |
| inputText.addAttribute(TextAttribute.INPUT_METHOD_HIGHLIGHT, |
| convertVisualFeedbackToHighlight(currentFeedback), |
| composedOffset + startOffset, |
| composedOffset + currentOffset); |
| startOffset = currentOffset; |
| currentFeedback = nextFeedback; |
| } |
| } |
| currentOffset = rawFeedbacks.getOffset(); |
| if (currentOffset >= 0) { |
| inputText.addAttribute(TextAttribute.INPUT_METHOD_HIGHLIGHT, |
| convertVisualFeedbackToHighlight(currentFeedback), |
| composedOffset + startOffset, |
| composedOffset + currentOffset); |
| } |
| |
| postInputMethodEvent(InputMethodEvent.INPUT_METHOD_TEXT_CHANGED, |
| inputText.getIterator(), |
| composedOffset, |
| TextHitInfo.leading(caretPosition), |
| visiblePositionInfo, |
| when); |
| } |
| |
| /** |
| * Flushes composed and committed text held in this context. |
| * This method is invoked in the AWT Toolkit (X event loop) thread context |
| * and thus inside the AWT Lock. |
| */ |
| // NOTE: This method may be called by privileged threads. |
| // This functionality is implemented in a package-private method |
| // to insure that it cannot be overridden by client subclasses. |
| // DO NOT INVOKE CLIENT CODE ON THIS THREAD! |
| void flushText() { |
| String flush = (committedText != null ? committedText : ""); |
| if (composedText != null) { |
| flush += composedText.toString(); |
| } |
| |
| if (!flush.equals("")) { |
| AttributedString attrstr = new AttributedString(flush); |
| postInputMethodEvent(InputMethodEvent.INPUT_METHOD_TEXT_CHANGED, |
| attrstr.getIterator(), |
| flush.length(), |
| null, |
| null, |
| EventQueue.getMostRecentEventTime()); |
| composedText = null; |
| committedText = null; |
| } |
| } |
| |
| /* |
| * Subclasses should override disposeImpl() instead of dispose(). Client |
| * code should always invoke dispose(), never disposeImpl(). |
| */ |
| protected synchronized void disposeImpl() { |
| disposeXIC(); |
| awtLock(); |
| composedText = null; |
| committedText = null; |
| rawFeedbacks = null; |
| awtUnlock(); |
| awtFocussedComponent = null; |
| lastXICFocussedComponent = null; |
| } |
| |
| /** |
| * Frees all X Window resources associated with this object. |
| * |
| * @see java.awt.im.spi.InputMethod#dispose |
| */ |
| public final void dispose() { |
| boolean call_disposeImpl = false; |
| |
| if (!disposed) { |
| synchronized (this) { |
| if (!disposed) { |
| disposed = call_disposeImpl = true; |
| } |
| } |
| } |
| |
| if (call_disposeImpl) { |
| disposeImpl(); |
| } |
| } |
| |
| /** |
| * Returns null. |
| * |
| * @see java.awt.im.spi.InputMethod#getControlObject |
| */ |
| public Object getControlObject() { |
| return null; |
| } |
| |
| /** |
| * @see java.awt.im.spi.InputMethod#removeNotify |
| */ |
| public synchronized void removeNotify() { |
| dispose(); |
| } |
| |
| /** |
| * @see java.awt.im.spi.InputMethod#setCompositionEnabled(boolean) |
| */ |
| public void setCompositionEnabled(boolean enable) { |
| /* If the composition state is successfully changed, set |
| the savedCompositionState to 'enable'. Otherwise, simply |
| return. |
| setCompositionEnabledNative may throw UnsupportedOperationException. |
| Don't try to catch it since the method may be called by clients. |
| Use package private mthod 'resetCompositionState' if you want the |
| exception to be caught. |
| */ |
| if (setCompositionEnabledNative(enable)) { |
| savedCompositionState = enable; |
| } |
| } |
| |
| /** |
| * @see java.awt.im.spi.InputMethod#isCompositionEnabled |
| */ |
| public boolean isCompositionEnabled() { |
| /* isCompositionEnabledNative may throw UnsupportedOperationException. |
| Don't try to catch it since this method may be called by clients. |
| Use package private method 'getCompositionState' if you want the |
| exception to be caught. |
| */ |
| return isCompositionEnabledNative(); |
| } |
| |
| /** |
| * Ends any input composition that may currently be going on in this |
| * context. Depending on the platform and possibly user preferences, |
| * this may commit or delete uncommitted text. Any changes to the text |
| * are communicated to the active component using an input method event. |
| * |
| * <p> |
| * A text editing component may call this in a variety of situations, |
| * for example, when the user moves the insertion point within the text |
| * (but outside the composed text), or when the component's text is |
| * saved to a file or copied to the clipboard. |
| * |
| */ |
| public void endComposition() { |
| if (disposed) { |
| return; |
| } |
| |
| /* Before calling resetXIC, record the current composition mode |
| so that it can be restored later. */ |
| savedCompositionState = getCompositionState(); |
| boolean active = haveActiveClient(); |
| if (active && composedText == null && committedText == null){ |
| needResetXIC = true; |
| needResetXICClient = new WeakReference<>(getClientComponent()); |
| return; |
| } |
| |
| String text = resetXIC(); |
| /* needResetXIC is only set to true for active client. So passive |
| client should not reset the flag to false. */ |
| if (active) { |
| needResetXIC = false; |
| } |
| |
| // Remove any existing composed text by posting an InputMethodEvent |
| // with null composed text. It would be desirable to wait for a |
| // dispatchComposedText call from X input method engine, but some |
| // input method does not conform to the XIM specification and does |
| // not call the preedit callback to erase preedit text on calling |
| // XmbResetIC. To work around this problem, do it here by ourselves. |
| awtLock(); |
| composedText = null; |
| postInputMethodEvent(InputMethodEvent.INPUT_METHOD_TEXT_CHANGED, |
| null, |
| 0, |
| null, |
| null); |
| |
| if (text != null && text.length() > 0) { |
| dispatchCommittedText(text); |
| } |
| awtUnlock(); |
| |
| // Restore the preedit state if it was enabled |
| if (savedCompositionState) { |
| resetCompositionState(); |
| } |
| } |
| |
| /** |
| * Returns a string with information about the current input method server, or null. |
| * On both Linux & SunOS, the value of environment variable XMODIFIERS is |
| * returned if set. Otherwise, on SunOS, $HOME/.dtprofile will be parsed |
| * to find out the language service engine (atok or wnn) since there is |
| * no API in Xlib which returns the information of native |
| * IM server or language service and we want to try our best to return as much |
| * information as possible. |
| * |
| * Note: This method could return null on Linux if XMODIFIERS is not set properly or |
| * if any IOException is thrown. |
| * See man page of XSetLocaleModifiers(3X11) for the usgae of XMODIFIERS, |
| * atok12setup(1) and wnn6setup(1) for the information written to |
| * $HOME/.dtprofile when you run these two commands. |
| * |
| */ |
| public String getNativeInputMethodInfo() { |
| String xmodifiers = System.getenv("XMODIFIERS"); |
| String imInfo = null; |
| |
| // If XMODIFIERS is set, return the value |
| if (xmodifiers != null) { |
| int imIndex = xmodifiers.indexOf("@im="); |
| if (imIndex != -1) { |
| imInfo = xmodifiers.substring(imIndex + 4); |
| } |
| } else if (System.getProperty("os.name").startsWith("SunOS")) { |
| File dtprofile = new File(System.getProperty("user.home") + |
| "/.dtprofile"); |
| String languageEngineInfo = null; |
| try { |
| BufferedReader br = new BufferedReader(new FileReader(dtprofile)); |
| String line = null; |
| |
| while ( languageEngineInfo == null && (line = br.readLine()) != null) { |
| if (line.contains("atok") || line.contains("wnn")) { |
| StringTokenizer tokens = new StringTokenizer(line); |
| while (tokens.hasMoreTokens()) { |
| String token = tokens.nextToken(); |
| if (Pattern.matches("atok.*setup", token) || |
| Pattern.matches("wnn.*setup", token)){ |
| languageEngineInfo = token.substring(0, token.indexOf("setup")); |
| break; |
| } |
| } |
| } |
| } |
| |
| br.close(); |
| } catch(IOException ioex) { |
| // Since this method is provided for internal testing only, |
| // we dump the stack trace for the ease of debugging. |
| ioex.printStackTrace(); |
| } |
| |
| imInfo = "htt " + languageEngineInfo; |
| } |
| |
| return imInfo; |
| } |
| |
| |
| /** |
| * Performs mapping from an XIM visible feedback value to Java IM highlight. |
| * @return Java input method highlight |
| */ |
| private InputMethodHighlight convertVisualFeedbackToHighlight(int feedback) { |
| InputMethodHighlight highlight; |
| |
| switch (feedback) { |
| case XIMUnderline: |
| highlight = InputMethodHighlight.UNSELECTED_CONVERTED_TEXT_HIGHLIGHT; |
| break; |
| case XIMReverse: |
| highlight = InputMethodHighlight.SELECTED_CONVERTED_TEXT_HIGHLIGHT; |
| break; |
| case XIMHighlight: |
| highlight = InputMethodHighlight.SELECTED_RAW_TEXT_HIGHLIGHT; |
| break; |
| case XIMPrimary: |
| highlight = InputMethodHighlight.UNSELECTED_CONVERTED_TEXT_HIGHLIGHT; |
| break; |
| case XIMSecondary: |
| highlight = InputMethodHighlight.SELECTED_CONVERTED_TEXT_HIGHLIGHT; |
| break; |
| case XIMTertiary: |
| highlight = InputMethodHighlight.SELECTED_RAW_TEXT_HIGHLIGHT; |
| break; |
| default: |
| highlight = InputMethodHighlight.SELECTED_RAW_TEXT_HIGHLIGHT; |
| break; |
| } |
| return highlight; |
| } |
| |
| // initial capacity size for string buffer, etc. |
| private static final int INITIAL_SIZE = 64; |
| |
| /** |
| * IntBuffer is an inner class that manipulates an int array and |
| * provides UNIX file io stream-like programming interfaces to |
| * access it. (An alternative would be to use ArrayList which may |
| * be too expensive for the work.) |
| */ |
| private final class IntBuffer { |
| private int[] intArray; |
| private int size; |
| private int index; |
| |
| IntBuffer(int initialCapacity) { |
| intArray = new int[initialCapacity]; |
| size = 0; |
| index = 0; |
| } |
| |
| void insert(int offset, int[] values) { |
| int newSize = size + values.length; |
| if (intArray.length < newSize) { |
| int[] newIntArray = new int[newSize * 2]; |
| System.arraycopy(intArray, 0, newIntArray, 0, size); |
| intArray = newIntArray; |
| } |
| System.arraycopy(intArray, offset, intArray, offset+values.length, |
| size - offset); |
| System.arraycopy(values, 0, intArray, offset, values.length); |
| size += values.length; |
| if (index > offset) |
| index = offset; |
| } |
| |
| void remove(int offset, int length) { |
| if (offset + length != size) |
| System.arraycopy(intArray, offset+length, intArray, offset, |
| size - offset - length); |
| size -= length; |
| if (index > offset) |
| index = offset; |
| } |
| |
| void replace(int offset, int[] values) { |
| System.arraycopy(values, 0, intArray, offset, values.length); |
| } |
| |
| void removeAll() { |
| size = 0; |
| index = 0; |
| } |
| |
| void rewind() { |
| index = 0; |
| } |
| |
| int getNext() { |
| if (index == size) |
| return -1; |
| return intArray[index++]; |
| } |
| |
| void unget() { |
| if (index != 0) |
| index--; |
| } |
| |
| int getOffset() { |
| return index; |
| } |
| |
| public String toString() { |
| StringBuffer s = new StringBuffer(); |
| for (int i = 0; i < size;) { |
| s.append(intArray[i++]); |
| if (i < size) |
| s.append(","); |
| } |
| return s.toString(); |
| } |
| } |
| |
| /* |
| * Native methods |
| */ |
| private native String resetXIC(); |
| private native void disposeXIC(); |
| private native boolean setCompositionEnabledNative(boolean enable); |
| private native boolean isCompositionEnabledNative(); |
| private native void turnoffStatusWindow(); |
| } |