Examples with KeyEvent org.eclipse.swt.events.KeyEvent used on opensource projects

Example 61 with KeyEvent

use of org.eclipse.swt.events.KeyEvent in project cubrid-manager by CUBRID.

the class EditProcedureDialog method createProcedureSettingComposite.

/**
	 * Create the procedure setting composite
	 *
	 * @return the composite
	 */
private Composite createProcedureSettingComposite() {
    final Composite composite = new Composite(tabFolder, SWT.LEFT | SWT.WRAP);
    composite.setLayoutData(new GridData(GridData.FILL_BOTH));
    GridLayout layoutComp;
    layoutComp = new GridLayout();
    layoutComp.marginWidth = 10;
    layoutComp.marginHeight = 10;
    layoutComp.numColumns = 2;
    composite.setLayout(layoutComp);
    final Label functionNameLabel = new Label(composite, SWT.NONE);
    functionNameLabel.setLayoutData(CommonUITool.createGridData(1, 1, -1, -1));
    functionNameLabel.setText(Messages.lblProcedureName);
    procNameText = new Text(composite, SWT.BORDER);
    procNameText.setTextLimit(ValidateUtil.MAX_SCHEMA_NAME_LENGTH);
    procNameText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
    procNameText.addKeyListener(new org.eclipse.swt.events.KeyAdapter() {

        public void keyPressed(KeyEvent event) {
        }

        public void keyReleased(KeyEvent event) {
            if (StringUtil.isEmpty(procNameText.getText())) {
                getButton(IDialogConstants.OK_ID).setEnabled(false);
                return;
            }
            getButton(IDialogConstants.OK_ID).setEnabled(true);
        }
    });
    if (isCommentSupport) {
        final Label procDescriptionLabel = new Label(composite, SWT.NONE);
        procDescriptionLabel.setLayoutData(CommonUITool.createGridData(1, 1, -1, -1));
        procDescriptionLabel.setText(Messages.lblProcedureDescription);
        procDescriptionText = new Text(composite, SWT.BORDER);
        procDescriptionText.setTextLimit(ValidateUtil.MAX_DB_OBJECT_COMMENT);
        procDescriptionText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
    }
    final String[] userColumnNameArr = isCommentSupport ? new String[] { Messages.tblColProcedureParamName, Messages.tblColProcedureParamType, Messages.tblColProcedureJavaParamType, Messages.tblColProcedureModel, Messages.tblColProcedureMemo } : new String[] { Messages.tblColProcedureParamName, Messages.tblColProcedureParamType, Messages.tblColProcedureJavaParamType, Messages.tblColProcedureModel };
    procParamsTableViewer = CommonUITool.createCommonTableViewer(composite, null, userColumnNameArr, CommonUITool.createGridData(GridData.FILL_BOTH, 6, 4, -1, 200));
    procParamsTable = procParamsTableViewer.getTable();
    procParamsTableViewer.getTable().addSelectionListener(new SelectionListener() {

        public void widgetDefaultSelected(SelectionEvent event) {
        }

        public void widgetSelected(SelectionEvent event) {
            if (procParamsTableViewer.getTable().getSelectionCount() > 0) {
                getButton(BUTTON_EDIT_ID).setEnabled(true);
                getButton(BUTTON_UP_ID).setEnabled(true);
                getButton(BUTTON_DOWN_ID).setEnabled(true);
                getButton(BUTTON_DROP_ID).setEnabled(true);
            }
        }
    });
    procParamsTableViewer.setInput(procParamsListData);
    procParamsTable.setLinesVisible(true);
    procParamsTable.setHeaderVisible(true);
    procParamsTable.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent event) {
        // setBtnEnableDisable();
        }
    });
    barComp = new Composite(composite, SWT.NONE);
    final GridData gdbarComp = new GridData(GridData.FILL_HORIZONTAL);
    gdbarComp.horizontalSpan = 2;
    barComp.setLayoutData(gdbarComp);
    GridLayout layout = new GridLayout();
    layout.marginWidth = 10;
    layout.marginHeight = 10;
    barComp.setLayout(layout);
    final Label javaNameLabel = new Label(composite, SWT.LEFT | SWT.WRAP);
    javaNameLabel.setLayoutData(CommonUITool.createGridData(1, 1, -1, -1));
    javaNameLabel.setText(Messages.lblJavaFunctionName);
    javaNameText = new Text(composite, SWT.BORDER);
    GridData gdJavaNameText = new GridData(GridData.FILL_HORIZONTAL);
    javaNameText.setLayoutData(gdJavaNameText);
    return composite;
}

Example 62 with KeyEvent

use of org.eclipse.swt.events.KeyEvent in project cubrid-manager by CUBRID.

the class ReformatColumnsAliasDialog method createContents.

protected void createContents() {
    shell = new Shell(getParent(), SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
    final GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 2;
    shell.setLayout(gridLayout);
    shell.setSize(450, 100);
    shell.setText(Messages.reformatTableAliasTitle);
    final Composite composite = new Composite(shell, SWT.NONE);
    final GridData gdComposite = new GridData(SWT.FILL, SWT.FILL, true, true);
    gdComposite.heightHint = 0;
    gdComposite.widthHint = 296;
    composite.setLayoutData(gdComposite);
    composite.setLayout(new GridLayout());
    sqlComp = getActiveSQLEditorComposite();
    if (sqlComp == null) {
        close();
        return;
    }
    final Composite group = new Composite(composite, SWT.NONE);
    group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
    final GridLayout gridLayoutGroup = new GridLayout();
    gridLayoutGroup.marginHeight = 0;
    gridLayoutGroup.numColumns = 1;
    group.setLayout(gridLayoutGroup);
    {
        final Label findWhatLabel = new Label(group, SWT.NONE);
        String msg = Messages.reformatTableAliasMessage;
        findWhatLabel.setText(msg);
        aliasText = new Text(group, SWT.BORDER);
        final GridData gdFind = new GridData(SWT.FILL, SWT.CENTER, true, false);
        aliasText.setLayoutData(gdFind);
        aliasText.addKeyListener(new KeyListener() {

            public void keyReleased(KeyEvent e) {
            }

            public void keyPressed(KeyEvent e) {
                if (e.keyCode == SWT.CR) {
                    submit();
                }
            }
        });
    }
    final Composite composite1 = new Composite(shell, SWT.NONE);
    final GridData gdComposite1 = new GridData(SWT.RIGHT, SWT.FILL, false, false);
    composite1.setLayoutData(gdComposite1);
    final GridLayout gridLayoutGroup2 = new GridLayout();
    gridLayoutGroup2.marginHeight = 0;
    gridLayoutGroup2.numColumns = 2;
    composite1.setLayout(gridLayoutGroup2);
    new Label(composite1, SWT.NONE);
    new Label(composite1, SWT.NONE);
    final Button findBtn = new Button(composite1, SWT.NONE);
    final GridData gdFindBtn = new GridData(SWT.FILL, SWT.CENTER, false, false);
    findBtn.setLayoutData(gdFindBtn);
    findBtn.setText(Messages.reformatTableAliasBtn);
    findBtn.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent event) {
            submit();
        }
    });
    final Button closeBtn = new Button(composite1, SWT.NONE);
    final GridData gdCloseBtn = new GridData(SWT.FILL, SWT.CENTER, false, false);
    closeBtn.setLayoutData(gdCloseBtn);
    closeBtn.setText(Messages.reformatTableAliasCancelBtn);
    closeBtn.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent event) {
            close();
        }
    });
    aliasText.addKeyListener(new KeyListener() {

        public void keyReleased(KeyEvent e) {
            if (e.keyCode == SWT.CR) {
                submit();
            }
        }

        public void keyPressed(KeyEvent e) {
        }
    });
}

Example 63 with KeyEvent

use of org.eclipse.swt.events.KeyEvent in project cubrid-manager by CUBRID.

the class SQLEditorComposite method addListener.

/**
	 * Add listener for text
	 */
private void addListener() {
    text.addModifyListener(new ModifyListener() {

        IAction undoAction = ActionManager.getInstance().getAction(UndoAction.ID);

        IAction redoAction = ActionManager.getInstance().getAction(RedoAction.ID);

        public void modifyText(ModifyEvent event) {
            setDirty(true);
            if (!undoAction.isEnabled()) {
                FocusAction.changeActionStatus(undoAction, text);
            }
            if (!redoAction.isEnabled()) {
                FocusAction.changeActionStatus(redoAction, text);
            }
            ServerInfo serverInfo = queryEditor == null || queryEditor.getSelectedServer() == null ? null : queryEditor.getSelectedServer().getServerInfo();
            boolean isLowerCase = QueryOptions.getKeywordLowercase(serverInfo);
            boolean isNoAutoUpperCase = QueryOptions.getNoAutoUppercaseKeyword(serverInfo);
            if (!isLowerCase && !isNoAutoUpperCase) {
                autoReplaceKeyword();
            }
        }

        // FIXME extract method?
        // replace keyword to upper case automatically
        public void autoReplaceKeyword() {
            if (pendingCompletionsListener) {
                return;
            }
            int pos = text.getCaretOffset() - 1;
            if (pos <= 0) {
                return;
            }
            String currentKey = text.getText(pos, pos);
            if (currentKey == null || currentKey.length() <= 0) {
                return;
            }
            char cur = currentKey.charAt(0);
            if (cur != ' ' && cur != '(' && cur != '\t' && cur != '\n' && cur != '\r' && cur != ',') {
                return;
            }
            pos--;
            if (pos < 0) {
                return;
            }
            int spos = pos - 20;
            if (spos < 0) {
                spos = 0;
            }
            String txt = text.getText(spos, pos);
            spos = pos + 1;
            for (int i = txt.length() - 1; i >= 0; i--) {
                char c = txt.charAt(i);
                if (c == ' ' || c == '\t' || c == '\n' || c == '(') {
                    break;
                }
                spos--;
            }
            int epos = pos;
            if (spos < 0 || epos < 0 || spos > epos) {
                return;
            }
            String currentKeyword = text.getText(spos, epos);
            if (currentKeyword == null) {
                return;
            }
            int len = currentKeyword.length();
            for (int i = 0; i < QuerySyntax.KEYWORDS_AUTO_UPPER.length; i++) {
                String keyword = QuerySyntax.KEYWORDS_AUTO_UPPER[i];
                if (keyword.equalsIgnoreCase(currentKeyword)) {
                    pendingCompletionsListener = true;
                    text.replaceTextRange(spos, len, keyword.toUpperCase());
                    pendingCompletionsListener = false;
                    break;
                }
            }
        }
    });
    text.addVerifyKeyListener(new VerifyKeyListener() {

        public void verifyKey(VerifyEvent event) {
            if ((event.stateMask & SWT.SHIFT) != 0 && event.keyCode == SWT.TAB) {
                event.doit = false;
                return;
            }
            if (((event.stateMask & SWT.CTRL) != 0 || (event.stateMask & SWT.COMMAND) != 0) && (event.keyCode == SWT.CR || event.keyCode == SWT.KEYPAD_CR)) {
                event.doit = false;
                return;
            }
            if (((event.stateMask & SWT.CTRL) != 0 || (event.stateMask & SWT.COMMAND) != 0) && (event.stateMask & SWT.ALT) != 0) {
                event.doit = false;
                return;
            }
            if (event.keyCode == SWT.TAB) {
                event.doit = false;
            } else {
                event.doit = true;
            }
        }
    });
    text.addKeyListener(new KeyAdapter() {

        public void keyPressed(KeyEvent event) {
            if ((event.stateMask & SWT.COMMAND) != 0) {
                //for Mac
                if ((event.stateMask & SWT.SHIFT) != 0) {
                    if (event.keyCode == SWT.CR || event.keyCode == SWT.KEYPAD_CR) {
                        queryEditor.runQuery(false);
                        return;
                    }
                }
            }
            if (event.keyCode == SWT.F5 || (event.stateMask & SWT.CTRL) != 0 && event.keyCode == 'e') {
                queryEditor.runQuery(false);
            } else if (event.keyCode == SWT.F6 || (event.stateMask & SWT.CTRL) != 0 && event.keyCode == 'l') {
                queryEditor.runQuery(true);
            } else if (event.keyCode == SWT.F7) {
                queryEditor.getCombinedQueryComposite().showQueryHistory();
            } else if (event.keyCode == SWT.F8) {
                queryEditor.runMultiQuery();
            } else if (event.keyCode == SWT.F1) {
                ActionManager.getInstance().getAction(HelpDocumentAction.ID).run();
            } else if (event.keyCode == SWT.F3) {
                if ((event.stateMask & SWT.SHIFT) == 0) {
                    TextEditorFindReplaceMediator.findNext();
                } else {
                    TextEditorFindReplaceMediator.findPrevious();
                }
            } else if (event.keyCode == SWT.F9) {
                queryEditor.setTuningModeButton(!queryEditor.isTuningModeButton());
            } else if (event.keyCode == SWT.F11) {
                queryEditor.getCombinedQueryComposite().rotateQueryPlanDisplayMode();
            } else if ((event.stateMask & SWT.CTRL) == 0 && (event.stateMask & SWT.SHIFT) == 0 && (event.stateMask & SWT.ALT) == 0 && event.keyCode == SWT.ESC) {
                int cursorOffset = text.getCaretOffset();
                text.setSelectionRange(cursorOffset, 0);
            } else if ((event.stateMask & SWT.CTRL) != 0 && (event.stateMask & SWT.SHIFT) == 0 && (event.stateMask & SWT.ALT) == 0 && event.keyCode == ',') {
                new QuickBuilderDialog(getShell(), SWT.NONE).open();
            } else if ((event.stateMask & SWT.CTRL) != 0 && event.keyCode == ' ') {
                contentAssistant.showPossibleCompletions();
            } else if ((event.stateMask & SWT.CTRL) != 0 && event.keyCode == 'r') {
                recentlyUsedSQLcontentAssistant.showPossibleCompletions();
            } else if ((event.stateMask & SWT.CTRL) != 0 && event.keyCode == 'd') {
                deleteRow();
            } else if ((event.stateMask & SWT.CTRL) != 0 && (event.stateMask & SWT.ALT) != 0 && event.keyCode == SWT.ARROW_DOWN) {
                duplicateRow();
            } else if ((event.stateMask & SWT.CTRL) != 0 && (event.stateMask & SWT.SHIFT) != 0 && event.keyCode == 't') {
                //add sql tab
                queryEditor.addEditorTab();
            } else if (((event.stateMask & SWT.CTRL) != 0 && (event.stateMask & SWT.SHIFT) != 0) && (event.keyCode == 'f' || event.keyCode == 'F')) {
                format();
            } else if ((event.stateMask & SWT.ALT) != 0 && event.keyCode == '/') {
                contentAssist();
            } else if ((event.stateMask & SWT.CTRL) != 0 && event.keyCode == 'o') {
                // Open a SQL file...
                ActionManager.getInstance().getAction(QueryOpenAction.ID).run();
            } else if ((event.stateMask & SWT.CTRL) != 0 && event.keyCode == 's') {
                // Save SQL to a file...
                try {
                    save();
                } catch (IOException e) {
                    MessageDialog.openError(getShell(), Messages.error, Messages.errCanNotSaveASQLFile);
                }
            } else if ((event.stateMask & SWT.CTRL) != 0 && (event.stateMask & SWT.SHIFT) == 0) {
                if (event.keyCode == '/') {
                    inputComment(false, false);
                } else if (event.keyCode == 'z') {
                    event.doit = false;
                    undo();
                } else if (event.keyCode == 'y') {
                    redo();
                } else if (event.keyCode == 'f' || event.keyCode == 'h') {
                    find();
                } else if ((event.stateMask & SWT.ALT) != 0 && (event.keyCode == SWT.CR || event.keyCode == SWT.KEYPAD_CR)) {
                    // NOPMD
                    queryEditor.runQueryPlanInCursorLine();
                } else if (event.keyCode == SWT.CR || event.keyCode == SWT.KEYPAD_CR) {
                    queryEditor.runQueryInCursorLine();
                } else if (event.keyCode == 'g') {
                    gotoLine();
                }
            } else if ((event.stateMask & SWT.CTRL) != 0 && (event.stateMask & SWT.SHIFT) != 0) {
                if ((event.stateMask & SWT.ALT) != 0 && (event.keyCode == SWT.CR || event.keyCode == SWT.KEYPAD_CR)) {
                    // NOPMD
                    queryEditor.runQuery(true);
                } else if (event.keyCode == SWT.CR || event.keyCode == SWT.KEYPAD_CR) {
                    queryEditor.runQuery(false);
                } else if (event.keyCode == 'x') {
                    toUpperCase();
                } else if (event.keyCode == 'y') {
                    toLowerCase();
                }
            } else if ((event.stateMask & SWT.SHIFT) == 0 && event.keyCode == SWT.TAB) {
                indent();
            } else if ((event.stateMask & SWT.SHIFT) != 0 && event.keyCode == SWT.TAB) {
                unindent();
            }
            if (SQLContentAssistProcessor.isShowProposal(event.character)) {
                contentAssistant.showPossibleCompletions();
                useCompletions = true;
            } else if ((event.character >= 'A' && event.character <= 'Z') || (event.character >= 'a' && event.character <= 'z')) {
                if (useCompletions) {
                    contentAssistant.showPossibleCompletions();
                }
                useCompletions = false;
            } else if (event.character == ' ' || event.character == '\t' || event.keyCode == SWT.KEYPAD_CR || event.keyCode == SWT.CR || event.keyCode == SWT.BS || (text.getText().trim().length() < 1)) {
                useCompletions = true;
            }
            // ctrl + alt + 1 ~ 9 : change editor tab
            if ((event.stateMask & SWT.CTRL) != 0 && (event.stateMask & SWT.ALT) != 0 && (event.keyCode >= '1' && event.keyCode <= '9')) {
                IWorkbenchPage page = LayoutUtil.getActivePage();
                if (page != null) {
                    int index = event.keyCode - '1';
                    IEditorReference[] refs = page.getEditorReferences();
                    for (int i = 0, selected = 0; i < refs.length; i++) {
                        IEditorReference ref = refs[i];
                        if (QueryEditorPart.ID.equals(ref.getId())) {
                            if (index == selected) {
                                IEditorPart part = ref.getEditor(true);
                                page.activate(part);
                            }
                            selected++;
                        }
                    }
                }
            } else if ((event.stateMask & SWT.CTRL) != 0 && (event.keyCode >= '1' && event.keyCode <= '9')) {
                // ctrl + 1 ~ 9 : change middle tab
                ITabSelection selector = queryEditor.getCombinedQueryComposite();
                selector.select(event.keyCode - '1', -1);
            } else if ((event.stateMask & SWT.ALT) != 0 && (event.keyCode >= '1' && event.keyCode <= '9')) {
                // alt + 1 ~ 9 : change bottom tab
                ITabSelection selector = queryEditor.getCombinedQueryComposite();
                selector.select(-1, event.keyCode - '1');
            }
        }
    });
    text.addSelectionListener(new SelectionAdapter() {

        /**
			 * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
			 * @param event an event containing information about the selection
			 */
        public void widgetSelected(SelectionEvent event) {
            IAction copyAction = ActionManager.getInstance().getAction(CopyAction.ID);
            copyAction.setEnabled(false);
            IAction cutAction = ActionManager.getInstance().getAction(CutAction.ID);
            cutAction.setEnabled(false);
            IAction reformatColumnsAliasAction = ActionManager.getInstance().getAction(ReformatColumnsAliasAction.ID);
            reformatColumnsAliasAction.setEnabled(false);
            // show schema info view with a selected text
            IAction showSchemaAction = ActionManager.getInstance().getAction(ShowSchemaAction.ID);
            showSchemaAction.setEnabled(false);
            if (event.getSource() instanceof StyledText) {
                StyledText stext = (StyledText) event.getSource();
                if (stext != null && stext.getSelectionText() != null && stext.getSelectionText().length() > 0) {
                    copyAction.setEnabled(true);
                    cutAction.setEnabled(true);
                    reformatColumnsAliasAction.setEnabled(true);
                    CubridDatabase db = queryEditor.getSelectedDatabase();
                    if (DatabaseNavigatorMenu.SELF_DATABASE_ID.equals(db.getId()) && ApplicationType.CUBRID_MANAGER.equals(PerspectiveManager.getInstance().getCurrentMode())) {
                        showSchemaAction.setEnabled(false);
                    } else {
                        showSchemaAction.setEnabled(true);
                    }
                }
            }
        }
    });
    text.addFocusListener(new FocusAdapter() {

        public void focusGained(FocusEvent event) {
            ActionManager.getInstance().changeFocusProvider(text);
        }
    });
    TextEditorFindReplaceMediator editorDialogMediator = new TextEditorFindReplaceMediator();
    text.addFocusListener(editorDialogMediator);
}

Example 64 with KeyEvent

use of org.eclipse.swt.events.KeyEvent in project cubrid-manager by CUBRID.

the class SelectTreeObjContrItem method createControl.

/**
	 * Create the content
	 * 
	 * @param parent Composite
	 * @return Control
	 */
protected Control createControl(Composite parent) {
    //Fill in the vertical span for tool bar
    final ToolItem emptyToolItem = new ToolItem((ToolBar) parent, SWT.NONE);
    emptyToolItem.setEnabled(false);
    emptyToolItem.setImage(CommonUIPlugin.getImage("icons/empty.gif"));
    Composite composite = new Composite(parent, SWT.NONE);
    GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 1;
    composite.setLayout(gridLayout);
    GridData gridData = new GridData(GridData.FILL, GridData.FILL, true, true);
    composite.setLayoutData(gridData);
    combo = new CCombo(composite, SWT.BORDER | SWT.LEFT);
    combo.setToolTipText(Messages.tipFind);
    combo.setVisibleItemCount(10);
    gridData = new GridData(GridData.FILL, GridData.FILL, true, true);
    gridData.widthHint = 95;
    combo.setLayoutData(gridData);
    combo.addKeyListener(new KeyAdapter() {

        public void keyReleased(KeyEvent e) {
            String str = combo.getText();
            if (str == null || str.trim().length() == 0) {
                NodeFilterManager.getInstance().setMatchFilter(null);
                tv.collapseAll();
            } else {
                NodeFilterManager.getInstance().setMatchFilter("*" + str + "*");
                tv.expandToLevel(2);
            }
            tv.refresh();
            super.keyReleased(e);
        }
    });
    return composite;
}

Example 65 with KeyEvent

use of org.eclipse.swt.events.KeyEvent in project cubrid-manager by CUBRID.

the class ProductInfoDialog method addListeners.

/**
	 * Adds listeners to the given styled text
	 * 
	 * @param styledText the StyledText object
	 */
protected void addListeners(StyledText styledText) {
    styledText.addMouseListener(new MouseAdapter() {

        public void mouseDown(MouseEvent event) {
            if (event.button != 1) {
                return;
            }
            mouseDown = true;
        }

        public void mouseUp(MouseEvent event) {
            mouseDown = false;
            StyledText text = (StyledText) event.widget;
            int offset = text.getCaretOffset();
            if (dragEvent) {
                // don't activate a link during a drag/mouse up operation
                dragEvent = false;
                if (item != null && item.isLinkAt(offset)) {
                    text.setCursor(handCursor);
                }
            } else if (item != null && item.isLinkAt(offset)) {
                text.setCursor(busyCursor);
                String url = item.getLinkAt(offset);
                if (StringUtil.isEmpty(url)) {
                    LOGGER.warn("The url is a null or empty string : {}.", url);
                } else {
                    openLink(url);
                }
                StyleRange selectionRange = getCurrentRange(text);
                if (selectionRange == null) {
                    LOGGER.warn("The selectionRange is a null.");
                } else {
                    text.setSelectionRange(selectionRange.start, selectionRange.length);
                    text.setCursor(null);
                }
            }
        }
    });
    styledText.addMouseMoveListener(new MouseMoveListener() {

        public void mouseMove(MouseEvent event) {
            if (mouseDown) {
                if (!dragEvent) {
                    StyledText text = (StyledText) event.widget;
                    text.setCursor(null);
                }
                dragEvent = true;
                return;
            }
            StyledText text = (StyledText) event.widget;
            int offset = -1;
            try {
                offset = text.getOffsetAtLocation(new Point(event.x, event.y));
            } catch (IllegalArgumentException ex) {
                offset = -1;
            }
            if (offset == -1) {
                text.setCursor(null);
            } else if (item != null && item.isLinkAt(offset)) {
                text.setCursor(handCursor);
            } else {
                text.setCursor(null);
            }
        }
    });
    styledText.addTraverseListener(new TraverseListener() {

        public void keyTraversed(TraverseEvent event) {
            StyledText text = (StyledText) event.widget;
            switch(event.detail) {
                case SWT.TRAVERSE_ESCAPE:
                    event.doit = true;
                    break;
                case SWT.TRAVERSE_TAB_NEXT:
                    // Previously traverse out in the backward direction?
                    Point nextSelection = text.getSelection();
                    int charCount = text.getCharCount();
                    if ((nextSelection.x == charCount) && (nextSelection.y == charCount)) {
                        text.setSelection(0);
                    }
                    StyleRange nextRange = findNextRange(text);
                    if (nextRange == null) {
                        // Next time in start at beginning, also used by
                        // TRAVERSE_TAB_PREVIOUS to indicate we traversed out
                        // in the forward direction
                        text.setSelection(0);
                        event.doit = true;
                    } else {
                        text.setSelectionRange(nextRange.start, nextRange.length);
                        event.doit = true;
                        event.detail = SWT.TRAVERSE_NONE;
                    }
                    break;
                case SWT.TRAVERSE_TAB_PREVIOUS:
                    // Previously traverse out in the forward direction?
                    Point previousSelection = text.getSelection();
                    if ((previousSelection.x == 0) && (previousSelection.y == 0)) {
                        text.setSelection(text.getCharCount());
                    }
                    StyleRange previousRange = findPreviousRange(text);
                    if (previousRange == null) {
                        // Next time in start at the end, also used by
                        // TRAVERSE_TAB_NEXT to indicate we traversed out
                        // in the backward direction
                        text.setSelection(text.getCharCount());
                        event.doit = true;
                    } else {
                        text.setSelectionRange(previousRange.start, previousRange.length);
                        event.doit = true;
                        event.detail = SWT.TRAVERSE_NONE;
                    }
                    break;
                default:
                    break;
            }
        }
    });
    // Listen for Tab and Space to allow keyboard navigation
    styledText.addKeyListener(new KeyAdapter() {

        public void keyPressed(KeyEvent event) {
            StyledText text = (StyledText) event.widget;
            if (event.character == ' ' || event.keyCode == SWT.CR || event.keyCode == SWT.KEYPAD_CR) {
                if (item == null) {
                    LOGGER.warn("AboutItem is a null.");
                    return;
                }
                // Be sure we are in the selection
                int offset = text.getSelection().x + 1;
                if (item.isLinkAt(offset)) {
                    text.setCursor(busyCursor);
                    String url = item.getLinkAt(offset);
                    if (StringUtil.isEmpty(url)) {
                        LOGGER.warn("The url is a null or empty string : {}.", url);
                    } else {
                        openLink(url);
                    }
                    StyleRange selectionRange = getCurrentRange(text);
                    if (selectionRange == null) {
                        LOGGER.warn("The selectionRange is a null.");
                    } else {
                        text.setSelectionRange(selectionRange.start, selectionRange.length);
                        text.setCursor(null);
                    }
                }
            }
        }
    });
}