Examples with SlaveDocumentEvent org.eclipse.jface.text.SlaveDocumentEvent used on opensource projects

Example 1 with SlaveDocumentEvent

use of org.eclipse.jface.text.SlaveDocumentEvent in project xtext-eclipse by eclipse.

the class XtextSourceViewer method updateTextListeners.

/**
 * Informs all registered text listeners about the change specified by the
 * widget command. This method does not use a robust iterator.
 *
 * @param cmd the widget command translated into a text event sent to all text listeners
 */
@SuppressWarnings("unchecked")
@Override
protected void updateTextListeners(WidgetCommand cmd) {
    if (cmd.event == null && cmd.length == 0 && cmd.start == 0 && cmd.text == null) {
        // handle plain redraw changes
        super.updateTextListeners(cmd);
    } else {
        List<ITextListener> textListeners = fTextListeners;
        if (textListeners != null) {
            textListeners = new ArrayList<ITextListener>(textListeners);
            DocumentEvent event = cmd.event;
            if (event instanceof SlaveDocumentEvent)
                event = ((SlaveDocumentEvent) event).getMasterEvent();
            int usedDiff = 0;
            if (event == null) {
                if (lengthDiff > 0) {
                    usedDiff = lengthDiff;
                }
                lengthDiff = Integer.MIN_VALUE;
            } else {
                lengthDiff = event.fText.length() - event.fLength;
            }
            int length = cmd.length + usedDiff;
            String text = cmd.text;
            if (usedDiff != 0) {
                try {
                    IRegion model = getModelCoverage();
                    length = Math.min(cmd.start + length, model.getLength()) - cmd.start;
                    text = getDocument().get(cmd.start + model.getOffset(), length);
                } catch (BadLocationException e) {
                    length = cmd.length;
                    log.debug("Ignored BadLocationException when fixing document events", e);
                }
            }
            TextEvent e = new TextEvent(cmd.start, length, text, cmd.preservedText, event, redraws()) {
            };
            for (int i = 0; i < textListeners.size(); i++) {
                ITextListener l = textListeners.get(i);
                try {
                    l.textChanged(e);
                } catch (NullPointerException exception) {
                    // in 3.8 this throws NPEs (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=369244)
                    log.info(e);
                }
            }
        }
    }
}

Example 2 with SlaveDocumentEvent

use of org.eclipse.jface.text.SlaveDocumentEvent in project dsl-devkit by dsldevkit.

the class FixedXtextSourceViewer method updateTextListeners.

/**
 * Informs all registered text listeners about the change specified by the
 * widget command. This method does not use a robust iterator.
 *
 * @param cmd
 *          the widget command translated into a text event sent to all text listeners
 */
@Override
protected void updateTextListeners(final WidgetCommand cmd) {
    List<ITextListener> textListeners = fTextListeners;
    if (textListeners != null) {
        textListeners = new ArrayList<ITextListener>(textListeners);
        DocumentEvent event = cmd.event;
        if (event instanceof SlaveDocumentEvent) {
            event = ((SlaveDocumentEvent) event).getMasterEvent();
        }
        TextEvent e = new TextEvent(cmd.start, cmd.length, cmd.text, cmd.preservedText, event, redraws()) {
        };
        for (int i = 0; i < textListeners.size(); i++) {
            ITextListener l = textListeners.get(i);
            l.textChanged(e);
        }
    }
}