Example usage for org.eclipse.jface.viewers TreeViewerFocusCellManager getFocusCell

Introduction

In this page you can find the example usage for org.eclipse.jface.viewers TreeViewerFocusCellManager getFocusCell.

Prototype

@Override
    public ViewerCell getFocusCell() 

Source Link

Usage

From source file:Snippet048TreeViewerTabWithCheckboxFor3_3.java

License:Open Source License

public Snippet048TreeViewerTabWithCheckboxFor3_3(final Shell shell) {
    final TreeViewer v = new TreeViewer(shell, SWT.BORDER | SWT.FULL_SELECTION);
    v.getTree().setLinesVisible(true);//from   ww  w  . j  a  va2 s .c  om
    v.getTree().setHeaderVisible(true);

    final TreeViewerFocusCellManager mgr = new TreeViewerFocusCellManager(v,
            new FocusCellOwnerDrawHighlighter(v));
    ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(v) {
        protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
            return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
                    || event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
                    || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
                            && (event.keyCode == SWT.CR || event.character == ' '))
                    || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
        }
    };

    TreeViewerEditor.create(v, mgr, actSupport,
            ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
                    | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);

    final TextCellEditor textCellEditor = new TextCellEditor(v.getTree());
    final CheckboxCellEditor checkboxCellEditor = new CheckboxCellEditor(v.getTree());

    TreeViewerColumn column = new TreeViewerColumn(v, SWT.NONE);
    column.getColumn().setWidth(200);
    column.getColumn().setMoveable(true);
    column.getColumn().setText("Column 1");
    column.setLabelProvider(new ColumnLabelProvider() {

        public String getText(Object element) {
            return "Column 1 => " + element.toString();
        }

    });
    column.setEditingSupport(new EditingSupport(v) {
        protected boolean canEdit(Object element) {
            return false;
        }

        protected CellEditor getCellEditor(Object element) {
            return textCellEditor;
        }

        protected Object getValue(Object element) {
            return ((MyModel) element).counter + "";
        }

        protected void setValue(Object element, Object value) {
            ((MyModel) element).counter = Integer.parseInt(value.toString());
            v.update(element, null);
        }
    });

    column = new TreeViewerColumn(v, SWT.NONE);
    column.getColumn().setWidth(200);
    column.getColumn().setMoveable(true);
    column.getColumn().setText("Column 2");
    column.setLabelProvider(new ColumnLabelProvider() {

        public String getText(Object element) {
            return "Column 2 => " + element.toString();
        }

    });
    column.setEditingSupport(new EditingSupport(v) {
        protected boolean canEdit(Object element) {
            return true;
        }

        protected CellEditor getCellEditor(Object element) {
            return textCellEditor;
        }

        protected Object getValue(Object element) {
            return ((MyModel) element).counter + "";
        }

        protected void setValue(Object element, Object value) {
            ((MyModel) element).counter = Integer.parseInt(value.toString());
            v.update(element, null);
        }
    });

    column = new TreeViewerColumn(v, SWT.NONE);
    column.getColumn().setWidth(200);
    column.getColumn().setMoveable(true);
    column.getColumn().setText("Column 3");
    column.setLabelProvider(new ColumnLabelProvider() {

        public String getText(Object element) {
            return ((MyModel) element).bool + "";
        }

    });
    column.setEditingSupport(new EditingSupport(v) {
        protected boolean canEdit(Object element) {
            return true;
        }

        protected CellEditor getCellEditor(Object element) {
            return checkboxCellEditor;
        }

        protected Object getValue(Object element) {
            return new Boolean(((MyModel) element).bool);
        }

        protected void setValue(Object element, Object value) {
            ((MyModel) element).bool = ((Boolean) value).booleanValue();
            v.update(element, null);
        }
    });

    v.setContentProvider(new MyContentProvider());
    v.setInput(createModel());
    v.getControl().addTraverseListener(new TraverseListener() {

        public void keyTraversed(TraverseEvent e) {
            if ((e.detail == SWT.TRAVERSE_TAB_NEXT || e.detail == SWT.TRAVERSE_TAB_PREVIOUS)
                    && mgr.getFocusCell().getColumnIndex() == 2) {
                ColumnViewerEditor editor = v.getColumnViewerEditor();
                ViewerCell cell = mgr.getFocusCell();

                try {
                    Method m = ColumnViewerEditor.class.getDeclaredMethod("processTraverseEvent",
                            new Class[] { int.class, ViewerRow.class, TraverseEvent.class });
                    m.setAccessible(true);
                    m.invoke(editor,
                            new Object[] { new Integer(cell.getColumnIndex()), cell.getViewerRow(), e });
                } catch (SecurityException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (NoSuchMethodException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (IllegalArgumentException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (IllegalAccessException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (InvocationTargetException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }
            }
        }

    });
}

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From source file:org.eclipse.jface.snippets.viewers.Snippet048TreeViewerTabWithCheckboxFor3_3.java

License:Open Source License

public Snippet048TreeViewerTabWithCheckboxFor3_3(final Shell shell) {
    final TreeViewer v = new TreeViewer(shell, SWT.BORDER | SWT.FULL_SELECTION);
    v.getTree().setLinesVisible(true);// w ww.  ja  va  2s.  co m
    v.getTree().setHeaderVisible(true);

    final TreeViewerFocusCellManager mgr = new TreeViewerFocusCellManager(v,
            new FocusCellOwnerDrawHighlighter(v));
    ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(v) {
        @Override
        protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
            return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
                    || event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
                    || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
                            && (event.keyCode == SWT.CR || event.character == ' '))
                    || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
        }
    };

    TreeViewerEditor.create(v, mgr, actSupport,
            ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
                    | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);

    final TextCellEditor textCellEditor = new TextCellEditor(v.getTree());
    final CheckboxCellEditor checkboxCellEditor = new CheckboxCellEditor(v.getTree());

    TreeViewerColumn column = new TreeViewerColumn(v, SWT.NONE);
    column.getColumn().setWidth(200);
    column.getColumn().setMoveable(true);
    column.getColumn().setText("Column 1");
    column.setLabelProvider(new ColumnLabelProvider() {

        @Override
        public String getText(Object element) {
            return "Column 1 => " + element;
        }

    });
    column.setEditingSupport(new EditingSupport(v) {
        @Override
        protected boolean canEdit(Object element) {
            return false;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            return textCellEditor;
        }

        @Override
        protected Object getValue(Object element) {
            return ((MyModel) element).counter + "";
        }

        @Override
        protected void setValue(Object element, Object value) {
            ((MyModel) element).counter = Integer.parseInt(value.toString());
            v.update(element, null);
        }
    });

    column = new TreeViewerColumn(v, SWT.NONE);
    column.getColumn().setWidth(200);
    column.getColumn().setMoveable(true);
    column.getColumn().setText("Column 2");
    column.setLabelProvider(new ColumnLabelProvider() {

        @Override
        public String getText(Object element) {
            return "Column 2 => " + element;
        }

    });
    column.setEditingSupport(new EditingSupport(v) {
        @Override
        protected boolean canEdit(Object element) {
            return true;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            return textCellEditor;
        }

        @Override
        protected Object getValue(Object element) {
            return ((MyModel) element).counter + "";
        }

        @Override
        protected void setValue(Object element, Object value) {
            ((MyModel) element).counter = Integer.parseInt(value.toString());
            v.update(element, null);
        }
    });

    column = new TreeViewerColumn(v, SWT.NONE);
    column.getColumn().setWidth(200);
    column.getColumn().setMoveable(true);
    column.getColumn().setText("Column 3");
    column.setLabelProvider(new ColumnLabelProvider() {

        @Override
        public String getText(Object element) {
            return ((MyModel) element).bool + "";
        }

    });
    column.setEditingSupport(new EditingSupport(v) {
        @Override
        protected boolean canEdit(Object element) {
            return true;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            return checkboxCellEditor;
        }

        @Override
        protected Object getValue(Object element) {
            return Boolean.valueOf(((MyModel) element).bool);
        }

        @Override
        protected void setValue(Object element, Object value) {
            ((MyModel) element).bool = ((Boolean) value).booleanValue();
            v.update(element, null);
        }
    });

    v.setContentProvider(new MyContentProvider());
    v.setInput(createModel());
    v.getControl().addTraverseListener(new TraverseListener() {

        @Override
        public void keyTraversed(TraverseEvent e) {
            if ((e.detail == SWT.TRAVERSE_TAB_NEXT || e.detail == SWT.TRAVERSE_TAB_PREVIOUS)
                    && mgr.getFocusCell().getColumnIndex() == 2) {
                ColumnViewerEditor editor = v.getColumnViewerEditor();
                ViewerCell cell = mgr.getFocusCell();

                try {
                    Method m = ColumnViewerEditor.class.getDeclaredMethod("processTraverseEvent",
                            new Class[] { int.class, ViewerRow.class, TraverseEvent.class });
                    m.setAccessible(true);
                    m.invoke(editor, Integer.valueOf(cell.getColumnIndex()), cell.getViewerRow(), e);
                } catch (SecurityException | NoSuchMethodException | IllegalArgumentException
                        | IllegalAccessException | InvocationTargetException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }
            }
        }

    });
}

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From source file:org.eclipse.jubula.client.ui.rcp.views.JBPropertiesPage.java

License:Open Source License

/**
 * Workaround for ticket #3012. Prevents odd cell selection 
 * behavior by pre-emptively setting the focus cell, if it is not already 
 * set. This workaround relies <b>heavily</b> on reflection. so the smallest
 * change to JFace might break it. A try-catch(throwable) block is used to 
 * minimize the damage that such a breakage would cause. Worst-case 
 * scenario: The bug is not fixed and a small performance penalty is 
 * incurred by looking everything up via reflection.
 * //ww w . jav a  2 s . co  m
 * @param focusCellManager The focus manager on which to perform the 
 *                         workaround.
 */
private void workaroundSpringySelection(TreeViewerFocusCellManager focusCellManager) {
    try {
        if (focusCellManager.getFocusCell() == null) {
            Class focusManagerClass = focusCellManager.getClass();
            Class abstractFocusManagerClass = focusManagerClass.getSuperclass();
            Method getInitialFocusCellMethod = focusManagerClass.getDeclaredMethod("getInitialFocusCell", //$NON-NLS-1$
                    new Class[0]);
            Method setFocusCellMethod = abstractFocusManagerClass.getDeclaredMethod("setFocusCell", //$NON-NLS-1$
                    ViewerCell.class);
            getInitialFocusCellMethod.setAccessible(true);
            setFocusCellMethod.setAccessible(true);
            Object initialFocusCellObj = getInitialFocusCellMethod.invoke(focusCellManager, new Object[0]);
            if (initialFocusCellObj instanceof ViewerCell) {
                ViewerCell initialFocusCell = (ViewerCell) initialFocusCellObj;
                setFocusCellMethod.invoke(focusCellManager, initialFocusCell);
            }
        }
    } catch (Throwable t) {
        LOG.info(Messages.ErrorInWorkaroundForSpringySelection, t);
    }
}

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