Examples with RulerEditPart org.eclipse.gef.internal.ui.rulers.RulerEditPart used on opensource projects

Example 1 with RulerEditPart

use of org.eclipse.gef.internal.ui.rulers.RulerEditPart in project archi by archimatetool.

the class CreateGuideAction method run.

/**
 * @see org.eclipse.jface.action.IAction#run()
 */
@Override
public void run() {
    RulerProvider provider = ((RulerEditPart) viewer.getRootEditPart().getChildren().get(0)).getRulerProvider();
    // Determine where the guide should be created
    int[] positions = provider.getGuidePositions();
    Arrays.sort(positions);
    int index = 0;
    int newPosition = GuideEditPart.MIN_DISTANCE_BW_GUIDES + 1;
    int desiredDifference = (GuideEditPart.MIN_DISTANCE_BW_GUIDES * 2) + 1;
    boolean found = positions.length > 0 && positions[0] > desiredDifference;
    while (index < positions.length - 1 && !found) {
        if (positions[index + 1] - positions[index] > desiredDifference) {
            newPosition += positions[index];
            found = true;
        }
        index++;
    }
    if (!found && positions.length > 0)
        newPosition += positions[positions.length - 1];
    // Create the guide and reveal it
    viewer.getEditDomain().getCommandStack().execute(provider.getCreateGuideCommand(newPosition));
    viewer.reveal((EditPart) viewer.getEditPartRegistry().get(provider.getGuideAt(newPosition)));
}