org.eclipse.swt.custom.ExtendedModifyListener Java Examples

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Example #1
Source File: ScriptConsoleViewer.java    From Pydev with Eclipse Public License 1.0 5 votes vote down vote up 
/**
 * Constructor.
 *
 * @param parent parent for the styled text
 * @param style style to be used
 */
public ScriptConsoleStyledText(Composite parent, int style) {
    super(parent, style);

    /**
     * The StyledText will change the caretOffset that we've updated during the modifications,
     * so, the verify and the extended modify listener will keep track if it actually does
     * that and will reset the caret to the position we actually added it.
     *
     * Feels like a hack but I couldn't find a better way to do it.
     */
    addVerifyListener(new VerifyListener() {

        @Override
        public void verifyText(VerifyEvent e) {
            internalCaretSet = -1;
        }
    });

    /**
     * Set it to the location we've set it to be.
     */
    addExtendedModifyListener(new ExtendedModifyListener() {

        @Override
        public void modifyText(ExtendedModifyEvent event) {
            if (internalCaretSet != -1) {
                if (internalCaretSet != getCaretOffset()) {
                    setCaretOffset(internalCaretSet);
                }
                internalCaretSet = -1;
            }
        }
    });

    initDragDrop();

    handleDeletePreviousWord = new HandleDeletePreviousWord();
    handleLineStartAction = new HandleLineStartAction();
}