Example usage for org.eclipse.jface.viewers TextCellEditor setFocus

Introduction

In this page you can find the example usage for org.eclipse.jface.viewers TextCellEditor setFocus.

Prototype

public void setFocus() 

Source Link

Document

Sets the focus to the cell editor's control.

Usage

From source file:org.eclipse.debug.ui.memory.AbstractTableRendering.java

License:Open Source License

/**
 * Activate cell editor and pre-fill it with initial value.
 * If initialValue is null, use cell content as initial value
 * @param initialValue the initial value to edit 
 *///from w w  w  .  ja  va 2s.  c o m
private void activateCellEditor(String initialValue) {

    int col = fTableCursor.getColumn();
    int row = findAddressIndex(fSelectedAddress);

    if (row < 0)
        return;
    // do not allow user to edit address column
    if (col == 0 || col > getNumCol()) {
        return;
    }

    ICellModifier cellModifier = null;

    if (fTableViewer == null) {
        return;
    }
    cellModifier = fTableViewer.getCellModifier();

    TableItem tableItem = fTableViewer.getTable().getItem(row);

    Object element = tableItem.getData();
    Object property = fTableViewer.getColumnProperties()[col];
    Object value = cellModifier.getValue(element, (String) property);

    // The cell modifier canModify function always returns false if the edit action 
    // is not invoked from here.  This is to prevent data to be modified when
    // the table cursor loses focus from a cell.  By default, data will
    // be changed in a table when the cell loses focus.  This is to workaround
    // this default behavior and only change data when the cell editor
    // is activated.
    ((TableRenderingCellModifier) cellModifier).setEditActionInvoked(true);
    boolean canEdit = cellModifier.canModify(element, (String) property);
    ((TableRenderingCellModifier) cellModifier).setEditActionInvoked(false);

    if (!canEdit)
        return;

    // activate based on current cursor position
    TextCellEditor selectedEditor = (TextCellEditor) fTableViewer.getCellEditors()[col];

    if (fTableViewer != null && selectedEditor != null) {
        // The control that will be the editor must be a child of the Table
        Text text = (Text) selectedEditor.getControl();

        String cellValue = null;

        if (initialValue != null) {
            cellValue = initialValue;
        } else {
            cellValue = ((String) value);
        }

        text.setText(cellValue);

        fCursorEditor.horizontalAlignment = SWT.LEFT;
        fCursorEditor.grabHorizontal = true;

        // Open the text editor in selected column of the selected row.
        fCursorEditor.setEditor(text, tableItem, col);

        // Assign focus to the text control
        selectedEditor.setFocus();

        if (initialValue != null) {
            text.clearSelection();
        }

        text.setFont(JFaceResources.getFont(IInternalDebugUIConstants.FONT_NAME));

        // add listeners for the text control
        addListeners(text);

        // move cursor below text control
        fTableCursor.moveBelow(text);
    }
}

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