source: trunk/src/org/expeditee/items/MagneticConstraint/Actions/VerticalTabAction.java@ 1102

package org.expeditee.items.MagneticConstraint.Actions;

import org.expeditee.gio.EcosystemManager;
import org.expeditee.gui.DisplayController;
import org.expeditee.items.Item;
import org.expeditee.items.MagneticConstraint.MagneticConstraintAction;
import org.expeditee.items.MagneticConstraint.Utilities.Line;

public class VerticalTabAction extends MagneticConstraintAction {

        @Override
        public boolean exec(final Item item) {
                if(item.getParent() == null || !this.isSpIDERCodePage(item.getParent())) return false;
                final int tabWidth = EcosystemManager.getTextLayoutManager().getStringWidth(null, "     ");
                tab(item, tabWidth);
                return true;
        }

        @Override
        public boolean invert(Item item) {
                if(item.getParent() == null || !this.isSpIDERCodePage(item.getParent())) return false;
                final int tabWidth = -(EcosystemManager.getTextLayoutManager().getStringWidth(null, "     "));
                tab(item, tabWidth);
                return true;
        }
        
        private void tab(final Item item, final int tabWidth) {
                if(item == null) {
                        DisplayController.setCursorPosition(DisplayController.getMouseX() + tabWidth, DisplayController.getMouseY());
                } else {
                        final Line postTabLine = Line.getLineFromToken(item);
                        postTabLine.deltaX(tabWidth);
                        if(postTabLine.size() > 0)
                                DisplayController.setCursorPosition(postTabLine.get(0).getPosition());
                }
        }
}