lalala.client.demo.RoomsView.java Source code

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Here is the source code for lalala.client.demo.RoomsView.java

Source

/*
 * Copyright 2009 Fred Sauer
 * 
 * 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 lalala.client.demo;

import com.google.gwt.user.client.ui.*;

import com.allen_sauer.gwt.dnd.client.DragController;

import java.util.ArrayList;

/**
 * Example of two lists side by side for {@link DualListExample}.
 */
public class RoomsView extends AbsolutePanel {

    private static final String CSS_DEMO_DUAL_LIST_EXAMPLE_CENTER = "demo-DualListExample-center";

    private static final int LIST_SIZE = 10;

    private ListBoxDragController dragController;

    private MouseListBox waitingList;

    private MouseListBox room1;
    private MouseListBox room2;
    private MouseListBox room3;
    private MouseListBox room4;

    public RoomsView(int visibleItems, String width) {
        HorizontalPanel firstRow = new HorizontalPanel();
        HorizontalPanel secondRow = new HorizontalPanel();
        add(firstRow);
        add(secondRow);
        firstRow.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        secondRow.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);

        VerticalPanel verticalPadding200 = new VerticalPanel();
        verticalPadding200.addStyleName("width200");
        verticalPadding200.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);

        VerticalPanel verticalPadding = new VerticalPanel();
        verticalPadding.addStyleName(CSS_DEMO_DUAL_LIST_EXAMPLE_CENTER);
        verticalPadding.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);

        VerticalPanel verticalPadding2 = new VerticalPanel();
        verticalPadding.addStyleName(CSS_DEMO_DUAL_LIST_EXAMPLE_CENTER);
        verticalPadding.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);

        dragController = new ListBoxDragController(this);
        waitingList = new MouseListBox(dragController, LIST_SIZE);
        room1 = new MouseListBox(dragController, LIST_SIZE);
        room2 = new MouseListBox(dragController, LIST_SIZE);

        VerticalPanel waitingRoomPanel = new VerticalPanel();
        waitingRoomPanel.add(new Label("waiting room"));
        waitingRoomPanel.add(waitingList);

        VerticalPanel room1Panel = new VerticalPanel();
        room1Panel.add(new Label("room 1"));
        room1Panel.add(room1);

        VerticalPanel room2Panel = new VerticalPanel();
        room2Panel.add(new Label("room 2"));
        room2Panel.add(room2);

        waitingList.setWidth(width);
        room1.setWidth(width);
        room2.setWidth(width);

        firstRow.add(waitingRoomPanel);
        firstRow.add(verticalPadding200);
        firstRow.add(room1Panel);
        firstRow.add(verticalPadding);
        firstRow.add(room2Panel);

        //
        room3 = new MouseListBox(dragController, LIST_SIZE);
        room4 = new MouseListBox(dragController, LIST_SIZE);
        room3.setWidth(width);
        room4.setWidth(width);

        VerticalPanel room3Panel = new VerticalPanel();
        room1Panel.add(new Label("room 3"));
        room1Panel.add(room3);

        VerticalPanel room4Panel = new VerticalPanel();
        room1Panel.add(new Label("room 4"));
        room1Panel.add(room4);

        secondRow.add(room3Panel);
        secondRow.add(verticalPadding2);
        secondRow.add(room4Panel);

        ListBoxDropController waitingListController = new ListBoxDropController(waitingList);
        ListBoxDropController room1Controller = new ListBoxDropController(room1);
        ListBoxDropController room2Controller = new ListBoxDropController(room2);
        ListBoxDropController room3Controller = new ListBoxDropController(room3);
        ListBoxDropController room4Controller = new ListBoxDropController(room4);
        dragController.registerDropController(waitingListController);
        dragController.registerDropController(room1Controller);
        dragController.registerDropController(room2Controller);
        dragController.registerDropController(room3Controller);
        dragController.registerDropController(room4Controller);

    }

    public void addLeft(String string) {
        waitingList.add(string);
    }

    /**
     * Adds an widget to the waitingList list box.
     * 
     * @param widget the text of the item to be added
     */
    public void addLeft(Widget widget) {
        waitingList.add(widget);
    }

    public DragController getDragController() {
        return dragController;
    }

    protected void moveItems(MouseListBox from, MouseListBox to, boolean justSelectedItems) {
        ArrayList<Widget> widgetList = justSelectedItems ? dragController.getSelectedWidgets(from)
                : from.widgetList();
        for (Widget widget : widgetList) {
            // TODO let widget.removeFromParent() take care of from.remove()
            from.remove(widget);
            to.add(widget);
        }
    }
}