Java 类java.awt.im.InputMethodRequests 实例源码

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        if(clientComponent!=null){
            InputMethodRequests req = clientComponent.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        if(clientComponent!=null){
            InputMethodRequests req = clientComponent.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        Component client = clientComponent.get();
        if(client != null){
            InputMethodRequests req = client.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

/**
 * Creates the composition area.
 */
private void createCompositionArea() {
    synchronized(compositionAreaLock) {
        compositionArea = new CompositionArea();
        if (compositionAreaOwner != null) {
            compositionArea.setHandlerInfo(compositionAreaOwner, inputMethodContext);
        }
        // If the client component is an active client using below-the-spot style, then
        // make the composition window undecorated without a title bar.
        if(clientComponent!=null){
            InputMethodRequests req = clientComponent.getInputMethodRequests();
            if (req != null && inputMethodContext.useBelowTheSpotInput()) {
                setCompositionAreaUndecorated(true);
            }
        }
    }
}

public Rectangle getTextLocation(TextHitInfo offset) {
    synchronized (compositionAreaLock) {
        if (compositionAreaOwner == this && isCompositionAreaVisible()) {
            return compositionArea.getTextLocation(offset);
        } else if (composedText != null) {
            // there's composed text, but it's not displayed, so fake a rectangle
            return new Rectangle(0, 0, 0, 10);
        } else {
            InputMethodRequests requests = getClientInputMethodRequests();
            if (requests != null) {
                return requests.getTextLocation(offset);
            } else {
                // passive client, no composed text, so fake a rectangle
                return new Rectangle(0, 0, 0, 10);
            }
        }
    }
}

@Override
public InputMethodRequests getInputMethodRequests() {
    try {
        return super.getInputMethodRequests();
    } catch (NullPointerException ex) {
        return null;
    }
}

/**
 * Positions the composition window near (usually below) the
 * insertion point in the client component if the client
 * component is an active client (below-the-spot input).
 */
void updateWindowLocation() {
    InputMethodRequests req = handler.getClientInputMethodRequests();
    if (req == null) {
        // not an active client
        return;
    }

    Point windowLocation = new Point();

    Rectangle caretRect = req.getTextLocation(null);
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension windowSize = compositionWindow.getSize();
    final int SPACING = 2;

    if (caretRect.x + windowSize.width > screenSize.width) {
        windowLocation.x = screenSize.width - windowSize.width;
    } else {
        windowLocation.x = caretRect.x;
    }

    if (caretRect.y + caretRect.height + SPACING + windowSize.height > screenSize.height) {
        windowLocation.y = caretRect.y - SPACING - windowSize.height;
    } else {
        windowLocation.y = caretRect.y + caretRect.height + SPACING;
    }

    compositionWindow.setLocation(windowLocation);
}

/**
 * Returns the input method request handler of the client component.
 * When using the composition window for an active client (below-the-spot
 * input), input method requests that do not relate to the display of
 * the composed text are forwarded to the client component.
 */
InputMethodRequests getClientInputMethodRequests() {
    Component client = clientComponent.get();
    if (client != null) {
        return client.getInputMethodRequests();
    }

    return null;
}

public int getInsertPositionOffset() {
    InputMethodRequests req = getClientInputMethodRequests();
    if (req != null) {
        return req.getInsertPositionOffset();
    }

    // we don't have access to the client component's text.
    return 0;
}

public AttributedCharacterIterator getCommittedText(int beginIndex,
                                                   int endIndex,
                                                   Attribute[] attributes) {
    InputMethodRequests req = getClientInputMethodRequests();
    if(req != null) {
        return req.getCommittedText(beginIndex, endIndex, attributes);
    }

    // we don't have access to the client component's text.
    return EMPTY_TEXT;
}

public int getCommittedTextLength() {
    InputMethodRequests req = getClientInputMethodRequests();
    if(req != null) {
        return req.getCommittedTextLength();
    }

    // we don't have access to the client component's text.
    return 0;
}

public AttributedCharacterIterator cancelLatestCommittedText(Attribute[] attributes) {
    InputMethodRequests req = getClientInputMethodRequests();
    if(req != null) {
        return req.cancelLatestCommittedText(attributes);
    }

    // we don't have access to the client component's text.
    return null;
}

public AttributedCharacterIterator getSelectedText(Attribute[] attributes) {
    InputMethodRequests req = getClientInputMethodRequests();
    if(req != null) {
        return req.getSelectedText(attributes);
    }

    // we don't have access to the client component's text.
    return EMPTY_TEXT;
}

/**
 * Dispatches committed text to a client component.
 * Called by composition window.
 *
 * @param client The component that the text should get dispatched to.
 * @param text The iterator providing access to the committed
 *        (and possible composed) text.
 * @param committedCharacterCount The number of committed characters in the text.
 */
synchronized void dispatchCommittedText(Component client,
             AttributedCharacterIterator text,
             int committedCharacterCount) {
    // note that the client is not always the current client component -
    // some host input method adapters may dispatch input method events
    // through the Java event queue, and we may have switched clients while
    // the event was in the queue.
    if (committedCharacterCount == 0
            || text.getEndIndex() <= text.getBeginIndex()) {
        return;
    }
    long time = System.currentTimeMillis();
    dispatchingCommittedText = true;
    try {
        InputMethodRequests req = client.getInputMethodRequests();
        if (req != null) {
            // active client -> send text as InputMethodEvent
            int beginIndex = text.getBeginIndex();
            AttributedCharacterIterator toBeCommitted =
                (new AttributedString(text, beginIndex, beginIndex + committedCharacterCount)).getIterator();

            InputMethodEvent inputEvent = new InputMethodEvent(
                    client,
                    InputMethodEvent.INPUT_METHOD_TEXT_CHANGED,
                    toBeCommitted,
                    committedCharacterCount,
                    null, null);

            client.dispatchEvent(inputEvent);
        } else {
            // passive client -> send text as KeyEvents
            char keyChar = text.first();
            while (committedCharacterCount-- > 0 && keyChar != CharacterIterator.DONE) {
                KeyEvent keyEvent = new KeyEvent(client, KeyEvent.KEY_TYPED,
                                             time, 0, KeyEvent.VK_UNDEFINED, keyChar);
                client.dispatchEvent(keyEvent);
                keyChar = text.next();
            }
        }
    } finally {
        dispatchingCommittedText = false;
    }
}

private InputMethodRequests getReq() {
    if (haveActiveClient() && !useBelowTheSpotInput()) {
        return getClientComponent().getInputMethodRequests();
    } else {
        return getCompositionAreaHandler(false);
    }
}

public InputMethodRequests getInputMethodRequests() {
    if (inputMethodRequestsHandler == null) {
        inputMethodRequestsHandler = new InputMethodRequestsHandler();
        Document doc = getDocument();
        if (doc != null) {
            doc.addDocumentListener((DocumentListener)inputMethodRequestsHandler);
        }
    }

    return inputMethodRequestsHandler;
}

/**
 * @see java.awt.peer.TextComponentPeer
 */
@Override
public InputMethodRequests getInputMethodRequests() {
    if (xtext != null) return xtext.getInputMethodRequests();
    else  return null;

}

/**
 * Positions the composition window near (usually below) the
 * insertion point in the client component if the client
 * component is an active client (below-the-spot input).
 */
void updateWindowLocation() {
    InputMethodRequests req = handler.getClientInputMethodRequests();
    if (req == null) {
        // not an active client
        return;
    }

    Point windowLocation = new Point();

    Rectangle caretRect = req.getTextLocation(null);
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    Dimension windowSize = compositionWindow.getSize();
    final int SPACING = 2;

    if (caretRect.x + windowSize.width > screenSize.width) {
        windowLocation.x = screenSize.width - windowSize.width;
    } else {
        windowLocation.x = caretRect.x;
    }

    if (caretRect.y + caretRect.height + SPACING + windowSize.height > screenSize.height) {
        windowLocation.y = caretRect.y - SPACING - windowSize.height;
    } else {
        windowLocation.y = caretRect.y + caretRect.height + SPACING;
    }

    compositionWindow.setLocation(windowLocation);
}

/**
 * Returns the input method request handler of the client component.
 * When using the composition window for an active client (below-the-spot
 * input), input method requests that do not relate to the display of
 * the composed text are forwarded to the client component.
 */
InputMethodRequests getClientInputMethodRequests() {
    Component client = clientComponent.get();
    if (client != null) {
        return client.getInputMethodRequests();
    }

    return null;
}

public int getInsertPositionOffset() {
    InputMethodRequests req = getClientInputMethodRequests();
    if (req != null) {
        return req.getInsertPositionOffset();
    }

    // we don't have access to the client component's text.
    return 0;
}

public AttributedCharacterIterator getCommittedText(int beginIndex,
                                                   int endIndex,
                                                   Attribute[] attributes) {
    InputMethodRequests req = getClientInputMethodRequests();
    if(req != null) {
        return req.getCommittedText(beginIndex, endIndex, attributes);
    }

    // we don't have access to the client component's text.
    return EMPTY_TEXT;
}