Java tutorial
/* * * Copyright (C) 2007-2015 Licensed to the Comunes Association (CA) under * one or more contributor license agreements (see COPYRIGHT for details). * The CA licenses this file to you under the GNU Affero General Public * License version 3, (the "License"); you may not use this file except in * compliance with the License. This file is part of kune. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package cc.kune.common.client.actions.gwtui; import cc.kune.common.client.actions.PropertyChangeEvent; import cc.kune.common.client.actions.PropertyChangeListener; import cc.kune.common.client.actions.ui.AbstractChildGuiItem; import cc.kune.common.client.actions.ui.AbstractGuiItem; import cc.kune.common.client.actions.ui.ParentWidget; import cc.kune.common.client.actions.ui.descrip.GuiActionDescrip; import cc.kune.common.client.actions.ui.descrip.MenuDescriptor; import cc.kune.common.client.actions.ui.descrip.MenuItemDescriptor; import cc.kune.common.client.actions.ui.descrip.Position; import cc.kune.common.client.resources.SubMenuResources; import cc.kune.common.client.tooltip.Tooltip; import com.google.gwt.event.logical.shared.CloseEvent; import com.google.gwt.event.logical.shared.CloseHandler; import com.google.gwt.user.client.ui.MenuBar; import com.google.gwt.user.client.ui.MenuItem; import com.google.gwt.user.client.ui.MenuItemSeparator; import com.google.gwt.user.client.ui.PopupPanel; import com.google.gwt.user.client.ui.PopupPanel.PositionCallback; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.UIObject; // TODO: Auto-generated Javadoc /** * The Class AbstractGwtMenuGui. * * @author vjrj@ourproject.org (Vicente J. Ruiz Jurado) */ public abstract class AbstractGwtMenuGui extends AbstractChildGuiItem implements ParentWidget { /** The menu. */ protected MenuBar menu; /** The popup. */ private PopupPanel popup; /** * Instantiates a new abstract gwt menu gui. */ public AbstractGwtMenuGui() { } /** * Instantiates a new abstract gwt menu gui. * * @param descriptor * the descriptor */ public AbstractGwtMenuGui(final GuiActionDescrip descriptor) { super(descriptor); } /* * (non-Javadoc) * * @see * cc.kune.common.client.actions.ui.ParentWidget#add(com.google.gwt.user.client * .ui.UIObject) */ @Override public void add(final UIObject item) { menu.addItem((MenuItem) item); } /** * Adds the separator. * * @return the menu item separator */ public MenuItemSeparator addSeparator() { return menu.addSeparator(); } /* * (non-Javadoc) * * @see * cc.kune.common.client.actions.ui.AbstractGuiItem#configureItemFromProperties * () */ @Override public void configureItemFromProperties() { super.configureItemFromProperties(); descriptor.addPropertyChangeListener(new PropertyChangeListener() { @Override public void propertyChange(final PropertyChangeEvent event) { if (event.getPropertyName().equals(MenuDescriptor.MENU_CLEAR)) { menu.clearItems(); } } }); } /* * (non-Javadoc) * * @see * cc.kune.common.client.actions.ui.AbstractChildGuiItem#create(cc.kune.common * .client.actions.ui.descrip.GuiActionDescrip) */ @Override public AbstractGuiItem create(final GuiActionDescrip descriptor) { super.create(descriptor); menu = new MenuBar((Boolean) descriptor.getValue(MenuDescriptor.MENU_VERTICAL), SubMenuResources.INSTANCE); menu.setAutoOpen(true); menu.setFocusOnHoverEnabled(true); menu.setAnimationEnabled(true); descriptor.addPropertyChangeListener(new PropertyChangeListener() { @Override public void propertyChange(final PropertyChangeEvent event) { if (event.getPropertyName().equals(MenuDescriptor.MENU_HIDE)) { if (popup != null && popup.isShowing()) { popup.hide(); } } else if (event.getPropertyName().equals(MenuDescriptor.MENU_SHOW)) { show(); } else if (event.getPropertyName().equals(MenuDescriptor.MENU_SELECTION_DOWN)) { menu.moveSelectionDown(); } else if (event.getPropertyName().equals(MenuDescriptor.MENU_SELECTION_UP)) { menu.moveSelectionUp(); } else if (event.getPropertyName().equals(MenuDescriptor.MENU_SELECT_ITEM)) { final HasMenuItem item = (HasMenuItem) ((MenuItemDescriptor) descriptor .getValue(MenuDescriptor.MENU_SELECT_ITEM)).getValue(MenuItemDescriptor.UI); menu.selectItem((MenuItem) item.getMenuItem()); } } }); return this; } /** * Creates the popup. * * @return the popup panel */ private PopupPanel createPopup() { popup = new PopupPanel(true); popup.setStyleName("oc-menu"); popup.add(menu); popup.addCloseHandler(new CloseHandler<PopupPanel>() { @Override public void onClose(final CloseEvent<PopupPanel> event) { descriptor.putValue(MenuDescriptor.MENU_ONHIDE, popup); } }); return popup; } /** * Hide. */ public void hide() { if (popup != null) { // if menu (not submenu) popup.hide(); } } /* * (non-Javadoc) * * @see cc.kune.common.client.actions.ui.ParentWidget#insert(int, * com.google.gwt.user.client.ui.UIObject) */ @Override public void insert(final int position, final UIObject item) { menu.insertItem((MenuItem) item, position); } /* * (non-Javadoc) * * @see cc.kune.common.client.actions.ui.AbstractGuiItem#shouldBeAdded() */ @Override public boolean shouldBeAdded() { return !descriptor.isChild(); } /** * Show. */ protected abstract void show(); /** * Show relative to. * * @param relative * the relative */ public void showRelativeTo(final Object relative) { if (popup == null) { createPopup(); } if (relative instanceof String) { popup.showRelativeTo(RootPanel.get((String) relative)); } else if (relative instanceof UIObject) { popup.showRelativeTo((UIObject) relative); } else if (relative instanceof Position) { popup.setPopupPositionAndShow(new PositionCallback() { @Override public void setPosition(final int offsetWidth, final int offsetHeight) { final Position position = (Position) relative; popup.setPopupPosition(position.getX(), position.getY()); } }); } descriptor.putValue(MenuDescriptor.MENU_ONSHOW, popup); Tooltip.getTip().hide(); } }