burrito.client.Burrito.java Source code

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Here is the source code for burrito.client.Burrito.java

Source

/**
 * Copyright 2011 Henric Persson (henric.persson@gmail.com)
 * 
 * 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 burrito.client;

import burrito.client.crud.CrudPanel;
import burrito.client.sitelet.SiteletAdminPanel;
import burrito.client.widgets.form.EditForm;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.event.logical.shared.ResizeEvent;
import com.google.gwt.event.logical.shared.ResizeHandler;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.Event.NativePreviewEvent;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.Window.ScrollEvent;
import com.google.gwt.user.client.Window.ScrollHandler;
import com.google.gwt.user.client.ui.RootPanel;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class Burrito implements EntryPoint {

    private static EditForm currentEditForm;
    private static CtrlSaveHandler currentCtrlSaveHandler;

    public void onModuleLoad() {
        RootPanel adminPanel = RootPanel.get("burrito-admin");

        if (adminPanel != null) {
            String siteletContainerId = Window.Location.getParameter("container");
            if (siteletContainerId != null && !siteletContainerId.isEmpty()) {
                SiteletAdminPanel siteletAdminPanel = new SiteletAdminPanel(siteletContainerId);
                adminPanel.add(siteletAdminPanel);
            } else {
                CrudPanel crud = new CrudPanel();
                adminPanel.add(crud);
            }
            Window.addWindowScrollHandler(new ScrollHandler() {

                @Override
                public void onWindowScroll(ScrollEvent event) {
                    updateEditFormButtons();
                }
            });
            Window.addResizeHandler(new ResizeHandler() {

                @Override
                public void onResize(ResizeEvent event) {
                    updateEditFormButtons();
                }
            });

            Event.addNativePreviewHandler(new Event.NativePreviewHandler() {

                @Override
                public void onPreviewNativeEvent(NativePreviewEvent event) {
                    if (currentCtrlSaveHandler == null) {
                        return;
                    }
                    if (event.getTypeInt() == Event.ONKEYDOWN) {
                        int sCharacterCode = 83;
                        if (event.getNativeEvent().getCtrlKey()
                                && event.getNativeEvent().getKeyCode() == sCharacterCode) {
                            currentCtrlSaveHandler.onCtrlSave();
                            event.cancel();
                        }
                    }
                }
            });
        }
    }

    public static void setCurrentCtrlSaveHandler(CtrlSaveHandler handler) {
        currentCtrlSaveHandler = handler;
    }

    public static void setCurrentEditForm(EditForm current) {
        currentEditForm = current;
        setCurrentCtrlSaveHandler(current);
        Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() {

            @Override
            public void execute() {
                updateEditFormButtons();
            }
        });
    }

    private static void updateEditFormButtons() {
        if (currentEditForm != null) {
            int bottomOfWindow = Window.getClientHeight() + Window.getScrollTop();
            int bottomOfEditForm = currentEditForm.getAbsoluteTop() + currentEditForm.getOffsetHeight();
            if (bottomOfEditForm > bottomOfWindow) {
                currentEditForm.makeButtonsStick(true);
            } else {
                currentEditForm.makeButtonsStick(false);
            }
        }
    }

}