jdramaix.client.ScrollListSample.java Source code

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Here is the source code for jdramaix.client.ScrollListSample.java

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/*
 * Copyright 2013 Julien Dramaix
 *
 * 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 jdramaix.client;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.text.shared.AbstractRenderer;
import com.google.gwt.user.cellview.client.CellList;
import com.google.gwt.user.client.ui.AbstractImagePrototype;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.ValueListBox;
import com.google.gwt.user.client.ui.Widget;
import jdramaix.client.ContactDatabase.ContactInfo;

import java.util.Arrays;

import static com.google.gwt.query.client.GQuery.$;

public class ScrollListSample implements EntryPoint {
    /**
     * The Cell used to render a {@link ContactInfo}. Code coming from the GWT
     * showcase
     *
     */
    private static class ContactCell extends AbstractCell<ContactInfo> {

        /**
         * The html of the image used for contacts.
         *
         */
        private final String imageHtml;

        public ContactCell(ImageResource image) {
            this.imageHtml = AbstractImagePrototype.create(image).getHTML();
        }

        @Override
        public void render(Context ctx, ContactInfo value, SafeHtmlBuilder sb) {
            // Value can be null, so do a null check..
            if (value == null) {
                return;
            }

            String classNames = resources.style().item();

            sb.appendHtmlConstant("<div class=\"" + classNames + " \">");
            sb.appendHtmlConstant("<table>");

            // Add the contact image.
            sb.appendHtmlConstant("<tr><td rowspan='3'><div>");
            sb.appendHtmlConstant(imageHtml);
            sb.appendHtmlConstant("</div></td>");

            // Add the name and address.
            sb.appendHtmlConstant("<td style='font-size:95%;'>");
            sb.appendEscaped(value.getFullName());
            sb.appendHtmlConstant("</td></tr><tr><td>");
            sb.appendEscaped(value.getAddress());
            sb.appendHtmlConstant("</td></tr></table></div>");
        }
    }

    private static enum Effect {
        NONE {
            String getEffectStyle() {
                return null;
            }
        },
        CARDS {
            String getEffectStyle() {
                return resources.style().cards();
            }
        },
        GROW {
            String getEffectStyle() {
                return resources.style().grow();
            }
        },
        FLIP {
            String getEffectStyle() {
                return resources.style().flip();
            }
        },
        FLY {
            String getEffectStyle() {
                return resources.style().fly();
            }
        },
        FLY_REVERSE {
            String getEffectStyle() {
                return resources.style().flyReverse();
            }
        },
        SKEW {
            String getEffectStyle() {
                return resources.style().skew();
            }
        },
        HELIX {
            String getEffectStyle() {
                return resources.style().helix();
            }
        },
        WAVE {
            String getEffectStyle() {
                return resources.style().wave();
            }
        },
        FAN {
            String getEffectStyle() {
                return resources.style().fan();
            }
        },
        TILT {
            String getEffectStyle() {
                return resources.style().tilt();
            }
        },
        CURL {
            String getEffectStyle() {
                return resources.style().curl();
            }
        },
        PAPERCUT {
            String getEffectStyle() {
                return resources.style().papercut();
            }
        },
        FADE {
            String getEffectStyle() {
                return resources.style().fade();
            }
        },
        TWIRL {
            String getEffectStyle() {
                return resources.style().twirl();
            }
        };

        abstract String getEffectStyle();
    }

    private static ApplicationResources resources = GWT.create(ApplicationResources.class);

    private Effect currentEffect = Effect.NONE;
    private Element effectContainer;

    public void onModuleLoad() {
        resources.style().ensureInjected();

        RootPanel.get("effectList").add(createEffectSelector());
        RootPanel.get().add(createList());

        effectContainer = $("." + resources.style().pager()).elements()[0];
    }

    private Widget createEffectSelector() {
        ValueListBox<Effect> listBox = new ValueListBox<Effect>(new AbstractRenderer<Effect>() {
            @Override
            public String render(Effect object) {
                return object != null ? object.name().toLowerCase() : "";
            }
        });

        listBox.setValue(currentEffect);
        listBox.setAcceptableValues(Arrays.asList(Effect.values()));
        listBox.addValueChangeHandler(new ValueChangeHandler<Effect>() {
            @Override
            public void onValueChange(ValueChangeEvent<Effect> event) {
                Effect effect = event.getValue();

                if (currentEffect != Effect.NONE) {
                    effectContainer.removeClassName(currentEffect.getEffectStyle());
                }

                if (effect != Effect.NONE) {
                    effectContainer.addClassName(effect.getEffectStyle());
                }

                currentEffect = effect;
            }
        });
        return listBox;
    }

    private Widget createList() {

        ContactCell contactCell = new ContactCell(resources.contact());

        CellList<ContactInfo> cellList = new CellList<ContactInfo>(contactCell,
                ContactDatabase.ContactInfo.KEY_PROVIDER);

        cellList.setPageSize(30);

        ContactDatabase.get().addDataDisplay(cellList);

        ShowMorePagerPanel pagerPanel = new ShowMorePagerPanel();
        pagerPanel.setDisplay(cellList);

        return pagerPanel;
    }
}