fi.jasoft.dragdroplayouts.demo.views.DragdropHorizontalSplitPanelDemo.java Source code

Introduction

Here is the source code for fi.jasoft.dragdroplayouts.demo.views.DragdropHorizontalSplitPanelDemo.java

Source

/*
 * Copyright 2015 John Ahlroos
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package fi.jasoft.dragdroplayouts.demo.views;

import com.vaadin.navigator.Navigator;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.CssLayout;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;

import fi.jasoft.dragdroplayouts.DDHorizontalSplitPanel;
import fi.jasoft.dragdroplayouts.DDVerticalLayout;
import fi.jasoft.dragdroplayouts.client.ui.LayoutDragMode;
import fi.jasoft.dragdroplayouts.demo.DemoView;
import fi.jasoft.dragdroplayouts.drophandlers.DefaultHorizontalSplitPanelDropHandler;

@SuppressWarnings("serial")
public class DragdropHorizontalSplitPanelDemo extends DemoView {

    public static final String NAME = "dd-horizontal-splitpanel";

    private int buttonCount = 1;

    public DragdropHorizontalSplitPanelDemo(Navigator navigator) {
        super(navigator);
    }

    @Override
    public Component getLayout() {
        // start-source
        CssLayout root = new CssLayout();
        root.setSizeFull();

        Label lbl = new Label("To the left are some buttons, and to the right is a horizontal split panel. "
                + "Try dragging the buttons on to the splitpanel. If a component already exists in the SplitPanel it is replaced with the dragged one.");
        root.addComponent(lbl);

        // Wrapping components in a horizontal layout
        HorizontalLayout inner = new HorizontalLayout();
        inner.setMargin(true);
        inner.setSizeFull();
        inner.setSpacing(true);
        root.addComponent(inner);

        // Add some buttons to a vertical layout with dragging enabled
        final DDVerticalLayout btns = new DDVerticalLayout();
        btns.setDragMode(LayoutDragMode.CLONE);
        btns.setSizeUndefined();
        btns.setSpacing(true);
        String caption = "Button ";
        btns.addComponent(new Button(caption + buttonCount++));
        btns.addComponent(new Button(caption + buttonCount++));
        btns.addComponent(new Button(caption + buttonCount++));
        btns.addComponent(new Button(caption + buttonCount++));
        btns.addComponent(new Button(caption + buttonCount++));
        inner.addComponent(btns);

        // Create a drag & drop horizontal split panel
        final DDHorizontalSplitPanel panel = new DDHorizontalSplitPanel();
        panel.setSizeFull();

        inner.addComponent(panel);
        inner.setExpandRatio(panel, 1);

        // Enable dragging
        panel.setDragMode(LayoutDragMode.CLONE);

        // Enable dropping
        panel.setDropHandler(new DefaultHorizontalSplitPanelDropHandler());

        // end-source
        return root;
    }

    @Override
    public String getCaption() {
        return "Horizontal split panel";
    }

    @Override
    public String getName() {
        return NAME;
    }
}