Java tutorial
/** * Copyright (C) 2010 BonitaSoft S.A. * BonitaSoft, 31 rue Gustave Eiffel - 38000 Grenoble * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2.0 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.bonitasoft.console.client.view.identity; import java.util.ArrayList; import java.util.List; import org.bonitasoft.console.client.BonitaUUID; import org.bonitasoft.console.client.CSSClassManager; import org.bonitasoft.console.client.ItemUpdates; import org.bonitasoft.console.client.SimpleFilter; import org.bonitasoft.console.client.common.data.AsyncHandler; import org.bonitasoft.console.client.events.ModelChangeListener; import org.bonitasoft.console.client.events.ModelChangeSupport; import org.bonitasoft.console.client.identity.Role; import org.bonitasoft.console.client.identity.User; import org.bonitasoft.console.client.model.BonitaDataSource; import org.bonitasoft.console.client.model.ItemSelection; import org.bonitasoft.console.client.model.SimpleSelection; import org.bonitasoft.console.client.model.identity.RoleDataSource; import org.bonitasoft.console.client.model.identity.RoleDataSourceImpl; import org.bonitasoft.console.client.view.CustomMenuBar; import org.bonitasoft.console.client.view.Focusable; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.Command; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.FlexTable; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.HTMLTable.Cell; import com.google.gwt.user.client.ui.Label; /** * @author Nicolas Chabanoles * */ public class RoleFinderPanel extends Composite implements Focusable, BonitaDataSource<BonitaUUID> { public static final String CANCEL_PROPERTY = "role finder cancel"; protected User myUser = null; protected FlexTable myOuterPanel = new FlexTable(); protected final HTML myErrorMessageLabel = new HTML(); protected final SimpleFilter myItemFilter = new SimpleFilter(0, 10); protected AsyncHandler<ItemUpdates<Role>> myItemHandler; protected final SimpleSelection<BonitaUUID> myFinderItemSelection = new SimpleSelection<BonitaUUID>(); protected final boolean mySelectionIsMultiple; protected final RoleDataSource myInternalItemDataSource = new RoleDataSourceImpl(null); protected final transient ModelChangeSupport myChanges = new ModelChangeSupport(this); public RoleFinderPanel(boolean isMultiple) { super(); mySelectionIsMultiple = isMultiple; myOuterPanel = buildContent(); myOuterPanel.setStylePrimaryName("bos_item_finder_panel"); initWidget(myOuterPanel); } private FlexTable buildContent() { FlexTable thePanel = new FlexTable(); thePanel.setWidget(0, 0, myErrorMessageLabel); thePanel.getFlexCellFormatter().setStyleName(0, 0, CSSClassManager.VALIDATION_ERROR_MESSAGE); thePanel.getFlexCellFormatter().setColSpan(0, 0, 3); myInternalItemDataSource.setItemFilter(myItemFilter); RolesListWidget myUserList = new RolesListWidget(null, myInternalItemDataSource) { @Override protected void initView() { myMinimalSize = 10; myMaximalSize = 10; super.initView(); if (myBottomNavBar.getWidgetCount() == 2) { myBottomNavBar.remove(1); } } /* * (non-Javadoc) * * @seeorg.bonitasoft.console.client.view.identity.UsersListWidget# * getContentRowTooltip() */ @Override protected String getContentRowTooltip() { return ""; } @Override public void notifyItemClicked(BonitaUUID anItem, ClickEvent anEvent) { // Modify item selection. if (anItem != null) { final Cell theCell = myInnerTable.getCellForEvent(anEvent); if (theCell != null) { final int theCellIndex = theCell.getCellIndex(); if (theCellIndex != 0) { if (mySelectionIsMultiple) { if (myItemSelection.getSelectedItems().contains(anItem)) { myItemSelection.removeItemFromSelection(anItem); } else { myItemSelection.addItemToSelection(anItem); } } else { if (!myItemSelection.getSelectedItems().contains(anItem)) { myItemSelection.clearSelection(); myItemSelection.addItemToSelection(anItem); } else { myItemSelection.clearSelection(); } } } else { // The check box has already inserted the item into the selection. if (mySelectionIsMultiple) { // Nothing to do here. } else { if (myItemSelection.getSize() > 1) { // I have to solve the inconsistency here. myItemSelection.clearSelection(); myItemSelection.addItemToSelection(anItem); } } } } } } @Override protected FlowPanel buildTopNavBar() { final FlowPanel theResult = new FlowPanel(); final Label theRefreshLink = new Label(constants.refresh()); theRefreshLink.setStyleName(CSSClassManager.LINK_LABEL); theRefreshLink.addClickHandler(new ClickHandler() { public void onClick(ClickEvent aEvent) { myBonitaDataSource.reload(); } }); theResult.add(theRefreshLink); return theResult; } @Override protected FlowPanel buildBottomNavBar() { final FlowPanel theResult = new FlowPanel(); final CustomMenuBar theActionMenu = new CustomMenuBar(); theActionMenu.addItem(constants.add(), new Command() { public void execute() { setSelectedItems(myItemSelection); } }); theActionMenu.addItem(constants.cancel(), new Command() { public void execute() { cancel(); } }); theResult.add(theActionMenu); return theResult; } }; thePanel.setWidget(2, 0, myUserList); thePanel.getFlexCellFormatter().setColSpan(2, 0, 3); return thePanel; } protected void setSelectedItems(ItemSelection<BonitaUUID> anItemSelection) { myFinderItemSelection.clearSelection(); if (anItemSelection != null) { for (BonitaUUID itemUUID : anItemSelection.getSelectedItems()) { myFinderItemSelection.addItemToSelection(itemUUID); } if (validate()) { myErrorMessageLabel.setText(null); myChanges.fireModelChange(ITEM_LIST_PROPERTY, null, myFinderItemSelection.getSelectedItems()); } else { if (mySelectionIsMultiple) { myErrorMessageLabel.setHTML(constants.selectSomeRoles()); } else { myErrorMessageLabel.setHTML(constants.selectExactlyOneRole()); } } } } private void cancel() { clear(); myChanges.fireModelChange(CANCEL_PROPERTY, false, true); } public void setFocus() { // Do nothing. } public boolean validate() { return (myFinderItemSelection != null && (myFinderItemSelection.getSize() == 1 || (mySelectionIsMultiple && myFinderItemSelection.getSize() >= 1))); } /** * @param anErrorMessage */ public void setErrorMessage(String anErrorMessage) { myErrorMessageLabel.setHTML(anErrorMessage); } public void addModelChangeListener(String aPropertyName, ModelChangeListener aListener) { removeModelChangeListener(aPropertyName, aListener); myChanges.addModelChangeListener(aPropertyName, aListener); } public void removeModelChangeListener(String aPropertyName, ModelChangeListener aListener) { myChanges.removeModelChangeListener(aPropertyName, aListener); } /* * (non-Javadoc) * * @see org.bonitasoft.console.client.model.BonitaDataSource#getVisibleItems() */ public List<BonitaUUID> getVisibleItems() { return myFinderItemSelection.getSelectedItems(); } public List<Role> getItems() { final List<Role> theResult = new ArrayList<Role>(); for (BonitaUUID theItemUUID : myFinderItemSelection.getSelectedItems()) { theResult.add(myInternalItemDataSource.getItem(theItemUUID)); } return theResult; } public void clear() { myFinderItemSelection.clearSelection(); myInternalItemDataSource.getItemSelection().clearSelection(); myErrorMessageLabel.setText(null); } }