Examples of java.awt.im.InputMethodRequests

java.awt.im.InputMethodRequests
InputMethodRequests defines the requests that a text editing component has to handle in order to work with input methods. The component can implement this interface itself or use a separate object that implements it. The object implementing this interface must be returned from the component's getInputMethodRequests method.
The text editing component also has to provide an input method event listener.
The interface is designed to support one of two input user interfaces:
- on-the-spot input, where the composed text is displayed as part of the text component's text body.
- below-the-spot input, where the composed text is displayed in a separate composition window just below the insertion point where the text will be inserted when it is committed. Note that, if text is selected within the component's text body, this text will be replaced by the committed text upon commitment; therefore it is not considered part of the context that the text is input into.
@see java.awt.Component#getInputMethodRequests @see java.awt.event.InputMethodListener @author JavaSoft Asia/Pacific @since 1.2

     * @return input method requests of composition window if
     * client is passive,
     * otherwise input method requests of client
     */
    private InputMethodRequests getIMRequests() {
        InputMethodRequests imRequests = null;
    
        if (client != null) {
            imRequests = client.getInputMethodRequests();
            if (imRequests == null) {                
                imRequests = getCompositionWindow().getInputMethodRequests();

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    public int getInsertPositionOffset() {
        return getIMRequests().getInsertPositionOffset();
    }


    public TextHitInfo getLocationOffset(int x, int y) {
        InputMethodRequests imr = getStyleIMRequests();
        if (imr != null) {
            return imr.getLocationOffset(x, y);
        }
        return null;
    }

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                    // and send it to passive client or just
                    // redirect this event to active client
                    if (client == null) {
                        return;
                    }
                    InputMethodRequests imr = client.getInputMethodRequests();
                    if (imr != null) {
                        if (IMManager.belowTheSpot()) {
                            // position window below the spot:
                            TextHitInfo offset = TextHitInfo.leading(0);
                            Rectangle textLoc = imr.getTextLocation(offset); 
                            setLocationBelow(textLoc);                           
                        } else {
                            client.dispatchEvent(ime);
                            return;
                        }

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     * @return input method requests of composition window if
     * client is passive,
     * otherwise input method requests of client
     */
    private InputMethodRequests getIMRequests() {
        InputMethodRequests imRequests = null;
    
        if (client != null) {
            imRequests = client.getInputMethodRequests();
            if (imRequests == null) {                
                imRequests = getCompositionWindow().getInputMethodRequests();

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    public int getInsertPositionOffset() {
        return getIMRequests().getInsertPositionOffset();
    }


    public TextHitInfo getLocationOffset(int x, int y) {
        InputMethodRequests imr = getStyleIMRequests();
        if (imr != null) {
            return imr.getLocationOffset(x, y);
        }
        return null;
    }

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     * @return input method requests of composition window if
     * client is passive,
     * otherwise input method requests of client
     */
    private InputMethodRequests getIMRequests() {
        InputMethodRequests imRequests = null;
    
        if (client != null) {
            imRequests = client.getInputMethodRequests();
            if (imRequests == null) {                
                imRequests = getCompositionWindow().getInputMethodRequests();

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    public int getInsertPositionOffset() {
        return getIMRequests().getInsertPositionOffset();
    }


    public TextHitInfo getLocationOffset(int x, int y) {
        InputMethodRequests imr = getStyleIMRequests();
        if (imr != null) {
            return imr.getLocationOffset(x, y);
        }
        return null;
    }

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                    // and send it to passive client or just
                    // redirect this event to active client
                    if (client == null) {
                        return;
                    }
                    InputMethodRequests imr = client.getInputMethodRequests();
                    if (imr != null) {
                        if (IMManager.belowTheSpot()) {
                            // position window below the spot:
                            TextHitInfo offset = TextHitInfo.leading(0);
                            Rectangle textLoc = imr.getTextLocation(offset); 
                            setLocationBelow(textLoc);                           
                        } else {
                            client.dispatchEvent(ime);
                            return;
                        }

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            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();

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     * 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) {

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Related Classes of java.awt.im.InputMethodRequests

org.apache.harmony.awt.im.CompositionWindow$ActiveClient

org.apache.harmony.awt.im.InputMethodContext

sun.awt.im.InputContext

sun.awt.im.InputMethodContext

sun.awt.im.CompositionArea

sun.awt.im.CompositionAreaHandler

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