RowHeaderResizeHoverBindings.java example

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nebula.widgets.nattable-master
/*******************************************************************************
 * Copyright (c) 2012 Original authors and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Original authors and others - initial API and implementation
 ******************************************************************************/
package org.eclipse.nebula.widgets.nattable.hover.config;

import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.config.AbstractUiBindingConfiguration;
import org.eclipse.nebula.widgets.nattable.grid.GridRegion;
import org.eclipse.nebula.widgets.nattable.hover.HoverLayer;
import org.eclipse.nebula.widgets.nattable.hover.action.ClearHoverStylingAction;
import org.eclipse.nebula.widgets.nattable.hover.action.HoverStylingAction;
import org.eclipse.nebula.widgets.nattable.layer.LabelStack;
import org.eclipse.nebula.widgets.nattable.resize.action.AutoResizeRowAction;
import org.eclipse.nebula.widgets.nattable.resize.action.RowResizeCursorAction;
import org.eclipse.nebula.widgets.nattable.resize.event.RowResizeEventMatcher;
import org.eclipse.nebula.widgets.nattable.resize.mode.RowResizeDragMode;
import org.eclipse.nebula.widgets.nattable.ui.action.NoOpMouseAction;
import org.eclipse.nebula.widgets.nattable.ui.binding.UiBindingRegistry;
import org.eclipse.nebula.widgets.nattable.ui.matcher.IMouseEventMatcher;
import org.eclipse.nebula.widgets.nattable.ui.matcher.MouseEventMatcher;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;

public class RowHeaderResizeHoverBindings extends
        AbstractUiBindingConfiguration {

    /**
     * The HoverLayer that is used to add hover styling.
     */
    private final HoverLayer layer;

    /**
     * @param layer
     *            The HoverLayer that is used to add hover styling.
     */
    public RowHeaderResizeHoverBindings(HoverLayer layer) {
        this.layer = layer;
    }

    @Override
    public void configureUiBindings(UiBindingRegistry uiBindingRegistry) {
        // Mouse move - Show resize cursor
        uiBindingRegistry.registerFirstMouseMoveBinding(
                new RowResizeEventMatcher(SWT.NONE, 0),
                new RowResizeCursorAction());
        // apply a hover styling on moving the mouse over a NatTable and clear
        // the cursor
        uiBindingRegistry.registerMouseMoveBinding(new MouseEventMatcher(
                GridRegion.ROW_HEADER), new HoverStylingAction(this.layer));

        // clear any hover styling if the mouse is moved out of the region area
        // uiBindingRegistry.registerMouseMoveBinding(
        // new IMouseEventMatcher() {
        // @Override
        // public boolean matches(NatTable natTable, MouseEvent event,
        // LabelStack regionLabels) {
        // return (regionLabels != null &&
        // !regionLabels.hasLabel(GridRegion.ROW_HEADER));
        // }
        //
        // }, new ClearHoverStylingAction(layer));

        // clear any hover styling if the mouse is moved out of a NatTable
        // region
        uiBindingRegistry.registerMouseMoveBinding(new IMouseEventMatcher() {
            @Override
            public boolean matches(NatTable natTable, MouseEvent event,
                    LabelStack regionLabels) {
                return (natTable != null && regionLabels == null);
            }

        }, new ClearHoverStylingAction());

        // clear any hover styling if the mouse is moved out of the NatTable
        // area
        uiBindingRegistry.registerMouseExitBinding(new IMouseEventMatcher() {
            @Override
            public boolean matches(NatTable natTable, MouseEvent event,
                    LabelStack regionLabels) {
                // always return true because this matcher is only asked in case
                // the mouse
                // exits the NatTable client area, therefore further checks are
                // not necessary
                return true;
            }

        }, new ClearHoverStylingAction());

        // Row resize
        uiBindingRegistry.registerFirstMouseDragMode(new RowResizeEventMatcher(
                SWT.NONE, 1), new RowResizeDragMode());

        uiBindingRegistry.registerDoubleClickBinding(new RowResizeEventMatcher(
                SWT.NONE, 1), new AutoResizeRowAction());
        uiBindingRegistry.registerSingleClickBinding(new RowResizeEventMatcher(
                SWT.NONE, 1), new NoOpMouseAction());
    }

}