com.google.gwt.sample.showcase.client.content.panels.CwDisclosurePanel.java Source code

Introduction

Here is the source code for com.google.gwt.sample.showcase.client.content.panels.CwDisclosurePanel.java

Source

/*
 * Copyright 2008 Google Inc.
 *
 * 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 com.google.gwt.sample.showcase.client.content.panels;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.i18n.client.Constants;
import com.google.gwt.sample.showcase.client.ContentWidget;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseData;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseSource;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseStyle;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.DecoratorPanel;
import com.google.gwt.user.client.ui.DisclosurePanel;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.RadioButton;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;

/**
 * Example file.
 */
@ShowcaseStyle(".gwt-DisclosurePanel")
public class CwDisclosurePanel extends ContentWidget {
    /**
     * The constants used in this Content Widget.
     */
    @ShowcaseSource
    public static interface CwConstants extends Constants {
        String cwDisclosurePanelDescription();

        String cwDisclosurePanelFormAdvancedCriteria();

        String cwDisclosurePanelFormDescription();

        String cwDisclosurePanelFormGender();

        String[] cwDisclosurePanelFormGenderOptions();

        String cwDisclosurePanelFormLocation();

        String cwDisclosurePanelFormName();

        String cwDisclosurePanelFormTitle();

        String cwDisclosurePanelName();
    }

    /**
     * An instance of the constants.
     */
    @ShowcaseData
    private final CwConstants constants;

    /**
     * Constructor.
     *
     * @param constants the constants
     */
    public CwDisclosurePanel(CwConstants constants) {
        super(constants.cwDisclosurePanelName(), constants.cwDisclosurePanelDescription(), true);
        this.constants = constants;
    }

    /**
     * Initialize this example.
     */
    @ShowcaseSource
    @Override
    public Widget onInitialize() {
        // Add the disclosure panels to a panel
        VerticalPanel vPanel = new VerticalPanel();
        vPanel.setSpacing(8);
        vPanel.add(createAdvancedForm());

        // Return the panel
        return vPanel;
    }

    @Override
    protected void asyncOnInitialize(final AsyncCallback<Widget> callback) {
        GWT.runAsync(CwDisclosurePanel.class, new RunAsyncCallback() {

            public void onFailure(Throwable caught) {
                callback.onFailure(caught);
            }

            public void onSuccess() {
                callback.onSuccess(onInitialize());
            }
        });
    }

    /**
     * Create a form that contains undisclosed advanced options.
     */
    @ShowcaseSource
    private Widget createAdvancedForm() {
        // Create a table to layout the form options
        FlexTable layout = new FlexTable();
        layout.setCellSpacing(6);
        layout.setWidth("300px");
        FlexCellFormatter cellFormatter = layout.getFlexCellFormatter();

        // Add a title to the form
        layout.setHTML(0, 0, constants.cwDisclosurePanelFormTitle());
        cellFormatter.setColSpan(0, 0, 2);
        cellFormatter.setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER);

        // Add some standard form options
        layout.setHTML(1, 0, constants.cwDisclosurePanelFormName());
        layout.setWidget(1, 1, new TextBox());
        layout.setHTML(2, 0, constants.cwDisclosurePanelFormDescription());
        layout.setWidget(2, 1, new TextBox());

        // Create some advanced options
        HorizontalPanel genderPanel = new HorizontalPanel();
        String[] genderOptions = constants.cwDisclosurePanelFormGenderOptions();
        for (int i = 0; i < genderOptions.length; i++) {
            genderPanel.add(new RadioButton("gender", genderOptions[i]));
        }
        Grid advancedOptions = new Grid(2, 2);
        advancedOptions.setCellSpacing(6);
        advancedOptions.setHTML(0, 0, constants.cwDisclosurePanelFormLocation());
        advancedOptions.setWidget(0, 1, new TextBox());
        advancedOptions.setHTML(1, 0, constants.cwDisclosurePanelFormGender());
        advancedOptions.setWidget(1, 1, genderPanel);

        // Add advanced options to form in a disclosure panel
        DisclosurePanel advancedDisclosure = new DisclosurePanel(constants.cwDisclosurePanelFormAdvancedCriteria());
        advancedDisclosure.setAnimationEnabled(true);
        advancedDisclosure.ensureDebugId("cwDisclosurePanel");
        advancedDisclosure.setContent(advancedOptions);
        layout.setWidget(3, 0, advancedDisclosure);
        cellFormatter.setColSpan(3, 0, 2);

        // Wrap the contents in a DecoratorPanel
        DecoratorPanel decPanel = new DecoratorPanel();
        decPanel.setWidget(layout);
        return decPanel;
    }
}