org.nightcode.gwt.selectio.client.Selector.java Source code

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Here is the source code for org.nightcode.gwt.selectio.client.Selector.java

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/*
 * Copyright (C) 2012 The NightCode Open Source Project
 *
 * 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 org.nightcode.gwt.selectio.client;

import org.nightcode.gwt.selectio.client.jso.SelectionJso;
import org.nightcode.gwt.selectio.client.requestfactory.SelectorRequestFactory;
import org.nightcode.gwt.selectio.client.requestfactory.SelectorRequestFactoryJson;
import org.nightcode.gwt.selectio.client.ui.ItemSelector;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 *
 */
public class Selector implements EntryPoint {

    public static final SelectorMessages MESSAGES = GWT.create(SelectorMessages.class);

    public static native void onChange(String func, Element element) /*-{
                                                                     eval("$wnd." + func + "('" + element.id + "');");
                                                                     }-*/;

    public static native void publish() /*-{
                                        $wnd.showSelector = $entry(@org.nightcode.gwt.selectio.client.Selector::showSelector(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;));
                                        }-*/;

    /**
     * Shows selector dialog panel.
     *
     * @param inputId id of html element which will contain user input
     * @param entityName name of entity
     * @param server server name
     * @param function js function which will be executed if OK button pushed
     */
    public static void showSelector(String inputId, String entityName, String server, String function,
            String selection, String title) {
        String url = server + "/selectio?q=" + entityName;

        DialogBox dialogBox = createDialogBox(url, RootPanel.get(inputId), function, selection, title);
        dialogBox.setGlassEnabled(true);
        dialogBox.setAnimationEnabled(true);
        dialogBox.center();
        dialogBox.show();
    }

    private static DialogBox createDialogBox(final String url, final RootPanel input, final String function,
            final String selection, final String title) {
        final DialogBox dialogBox = new DialogBox(new SelectorHeader());
        dialogBox.setStyleName("modal-content");
        if (title != null) {
            dialogBox.getCaption().setText(title);
        }

        SelectorRequestFactory requestFactory = new SelectorRequestFactoryJson(url);
        final ItemSelector itemSelector = new ItemSelector(requestFactory, 490);

        if (selection != null) {
            SelectionJso selectionJso = SelectionJso.selectionFromJson(selection);
            itemSelector.setSelection(selectionJso);
        }

        VerticalPanel dialogContents = new VerticalPanel();
        dialogContents.setSize("300px", "500px");
        dialogContents.setStyleName("selectio");
        dialogBox.setWidget(dialogContents);

        dialogContents.add(itemSelector);
        dialogContents.setCellHeight(itemSelector, "490px");

        Button doneButton = new Button(MESSAGES.done(), new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                final SelectionJso selection = SelectionJso.create();
                itemSelector.fillSelection(selection);
                input.getElement().setAttribute("value", new JSONObject(selection).toString());
                onChange(function, input.getElement());
                dialogBox.hide();
            }
        });
        doneButton.setStyleName("btn btn-primary");

        Button cancelButton = new Button(MESSAGES.cancel(), new ClickHandler() {
            @Override
            public void onClick(ClickEvent clickEvent) {
                dialogBox.hide();
            }
        });
        cancelButton.setStyleName("btn btn-default");

        Panel buttonPanel = new FlowPanel();
        buttonPanel.setStyleName("btn-toolbar pull-right");
        buttonPanel.add(doneButton);
        buttonPanel.add(cancelButton);

        dialogContents.add(buttonPanel);
        dialogContents.setCellHeight(buttonPanel, "20px");
        dialogContents.setCellHorizontalAlignment(buttonPanel, HasHorizontalAlignment.ALIGN_RIGHT);

        return dialogBox;
    }

    @Override
    public void onModuleLoad() {
        publish();
    }
}