Java tutorial
/** * OpenKM, Open Document Management System (http://www.openkm.com) * Copyright (c) 2006-2015 Paco Avila & Josep Llort * * No bytes were intentionally harmed during the development of this application. * * 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 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, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package com.openkm.frontend.client.widget.searchin; import java.util.ArrayList; import java.util.Collection; import java.util.Iterator; import java.util.List; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ChangeEvent; import com.google.gwt.event.dom.client.ChangeHandler; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.DialogBox; import com.google.gwt.user.client.ui.FlexTable; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.ListBox; import com.google.gwt.user.client.ui.VerticalPanel; import com.openkm.frontend.client.Main; import com.openkm.frontend.client.bean.GWTPropertyGroup; import com.openkm.frontend.client.bean.GWTPropertyParams; import com.openkm.frontend.client.bean.form.GWTFormElement; import com.openkm.frontend.client.constants.ui.UIDockPanelConstants; import com.openkm.frontend.client.service.OKMPropertyGroupService; import com.openkm.frontend.client.service.OKMPropertyGroupServiceAsync; /** * Group popup * * @author jllort * */ public class GroupPopup extends DialogBox { private final OKMPropertyGroupServiceAsync propertyGroupService = (OKMPropertyGroupServiceAsync) GWT .create(OKMPropertyGroupService.class); private VerticalPanel vPanel; private HorizontalPanel hPanel; private Button closeButton; private Button addButton; private ListBox groupListBox; private ListBox propertyListBox; private List<GWTFormElement> formElementList = new ArrayList<GWTFormElement>(); private FlexTable table; private Label groupLabel; private Label propertyLabel; private int validate = -1; private int origin = UIDockPanelConstants.SEARCH; /** * About popup */ public GroupPopup() { // Establishes auto-close when click outside super(false, true); vPanel = new VerticalPanel(); hPanel = new HorizontalPanel(); groupLabel = new Label(Main.i18n("group.group")); propertyLabel = new Label(Main.i18n("group.property.group")); table = new FlexTable(); closeButton = new Button(Main.i18n("button.close"), new ClickHandler() { @Override public void onClick(ClickEvent event) { hide(); } }); addButton = new Button(Main.i18n("button.add"), new ClickHandler() { @Override public void onClick(ClickEvent event) { if (propertyListBox.getSelectedIndex() > 0) { String grpName = groupListBox.getValue(groupListBox.getSelectedIndex()); String grpLabel = groupListBox.getItemText(groupListBox.getSelectedIndex()); String propertyName = propertyListBox.getValue(propertyListBox.getSelectedIndex()); for (Iterator<GWTFormElement> it = formElementList.iterator(); it.hasNext();) { GWTFormElement formElement = it.next(); if (formElement.getName().endsWith(propertyName)) { GWTPropertyParams param = new GWTPropertyParams(); param.setGrpName(grpName); param.setGrpLabel(grpLabel); param.setFormElement(formElement); switch (origin) { case UIDockPanelConstants.SEARCH: Main.get().mainPanel.search.searchBrowser.searchIn.searchMetadata .addProperty(param); break; case UIDockPanelConstants.DESKTOP: Main.get().updatePropertyGroupPopup.addProperty(param); break; } } } } enableAddGroupButton(); // Enables or disables add group button ( if exist some property still to be added ) hide(); } }); groupListBox = new ListBox(); groupListBox.addChangeHandler(new ChangeHandler() { @Override public void onChange(ChangeEvent event) { if (groupListBox.getSelectedIndex() > 0) { propertyListBox.clear(); getMetaData(); } else { propertyListBox.clear(); propertyListBox.setVisible(false); propertyLabel.setVisible(false); addButton.setEnabled(false); } } }); groupListBox.setStyleName("okm-Select"); propertyListBox = new ListBox(); propertyListBox.addChangeHandler(new ChangeHandler() { @Override public void onChange(ChangeEvent event) { if (propertyListBox.getSelectedIndex() > 0) { addButton.setEnabled(true); } else { addButton.setEnabled(false); } } }); propertyListBox.setStyleName("okm-Select"); propertyListBox.setVisible(false); propertyLabel.setVisible(false); vPanel.setWidth("300px"); vPanel.setHeight("100px"); closeButton.setStyleName("okm-NoButton"); addButton.setStyleName("okm-AddButton"); addButton.setEnabled(false); hPanel.add(closeButton); hPanel.add(new HTML(" ")); hPanel.add(addButton); hPanel.setCellHorizontalAlignment(closeButton, VerticalPanel.ALIGN_CENTER); hPanel.setCellHorizontalAlignment(addButton, VerticalPanel.ALIGN_CENTER); table.setWidget(0, 0, groupLabel); table.setWidget(0, 1, groupListBox); table.setWidget(1, 0, propertyLabel); table.setWidget(1, 1, propertyListBox); vPanel.add(new HTML("<br>")); vPanel.add(table); vPanel.add(new HTML("<br>")); vPanel.add(hPanel); vPanel.add(new HTML("<br>")); vPanel.setCellHorizontalAlignment(table, VerticalPanel.ALIGN_CENTER); vPanel.setCellHorizontalAlignment(hPanel, VerticalPanel.ALIGN_CENTER); super.hide(); setWidget(vPanel); } public void show(int origin) { this.origin = origin; show(); } /** * Gets asynchronous to get all groups */ final AsyncCallback<List<GWTPropertyGroup>> callbackGetAllGroups = new AsyncCallback<List<GWTPropertyGroup>>() { public void onSuccess(List<GWTPropertyGroup> result) { groupListBox.clear(); groupListBox.addItem("", ""); // Adds empty value for (Iterator<GWTPropertyGroup> it = result.iterator(); it.hasNext();) { GWTPropertyGroup group = it.next(); groupListBox.addItem(group.getLabel(), group.getName()); } validate = 1; validateGroupsNoEmpty(); // Enables or disables add group button ( case exist some value to be added on list ) } public void onFailure(Throwable caught) { Main.get().showError("GetAllGroups", caught); } }; /** * Gets asynchronous to get property group form properties */ final AsyncCallback<List<GWTFormElement>> callbackGetPropertyGroupForm = new AsyncCallback<List<GWTFormElement>>() { public void onSuccess(List<GWTFormElement> result) { formElementList = result; propertyListBox.clear(); propertyListBox.setVisible(true); propertyLabel.setVisible(true); propertyListBox.addItem("", ""); // First item is always blank Collection<String> actualProperties = new ArrayList<String>(); switch (origin) { case UIDockPanelConstants.SEARCH: actualProperties = Main.get().mainPanel.search.searchBrowser.searchIn.getFormElementsKeys(); break; case UIDockPanelConstants.DESKTOP: actualProperties = Main.get().updatePropertyGroupPopup.getFormElementsKeys(); break; } for (Iterator<GWTFormElement> it = result.iterator(); it.hasNext();) { GWTFormElement formElement = it.next(); if (!actualProperties.contains(formElement.getName())) { // Only appears properties not stil added propertyListBox.addItem(formElement.getLabel(), formElement.getName()); } } } public void onFailure(Throwable caught) { Main.get().showError("getMetaData", caught); } }; /** * Gets asyncronous to get property group form properties and validate is there's one not assigned */ final AsyncCallback<List<GWTFormElement>> callbackGetPropertyGroupFormDataToValidate = new AsyncCallback<List<GWTFormElement>>() { public void onSuccess(List<GWTFormElement> result) { formElementList = result; Collection<String> actualProperties = new ArrayList<String>(); switch (origin) { case UIDockPanelConstants.SEARCH: actualProperties = Main.get().mainPanel.search.searchBrowser.searchIn.getFormElementsKeys(); break; case UIDockPanelConstants.DESKTOP: actualProperties = Main.get().updatePropertyGroupPopup.getFormElementsKeys(); break; } boolean found = false; for (Iterator<GWTFormElement> it = result.iterator(); it.hasNext();) { GWTFormElement formElement = it.next(); String propertyName = formElement.getName(); if (!actualProperties.contains(propertyName)) { // Only appears properties not stil added found = true; } } // Removes the item on list if (!found) { groupListBox.removeItem(validate); // When removing object it's not necessary to increment validate value } else { validate++; } validateGroupsNoEmpty(); } public void onFailure(Throwable caught) { Main.get().showError("getMetaData", caught); } }; /** * Enables close button */ public void enableClose() { closeButton.setEnabled(true); Main.get().mainPanel.setVisible(true); // Shows main panel when all widgets are loaded } /** * Language refresh */ public void langRefresh() { setText(Main.i18n("group.label")); closeButton.setText(Main.i18n("button.close")); addButton.setText(Main.i18n("button.add")); groupLabel.setText(Main.i18n("group.group")); propertyLabel.setText(Main.i18n("group.property.group")); } /** * Show the popup error * * @param msg Error message */ public void show() { int left = (Window.getClientWidth() - 300) / 2; int top = (Window.getClientHeight() - 100) / 2; setPopupPosition(left, top); setText(Main.i18n("group.label")); validate = -1; groupListBox.clear(); propertyListBox.clear(); propertyListBox.setVisible(false); propertyLabel.setVisible(false); getAllGroups(); // Gets all groups addButton.setEnabled(false); super.show(); } /** * Gets all property groups */ private void getAllGroups() { propertyGroupService.getAllGroups(callbackGetAllGroups); } /** * Gets all metadata group properties */ private void getMetaData() { propertyGroupService.getPropertyGroupForm(groupListBox.getValue(groupListBox.getSelectedIndex()), callbackGetPropertyGroupForm); } /** * Enables or disables add group button ( case exist some item to be added ) */ public void enableAddGroupButton() { groupListBox.clear(); propertyListBox.clear(); getAllGroups(); // Gets all groups } /** * Validates that exist some item to add */ private void validateGroupsNoEmpty() { if (groupListBox.getItemCount() > validate) { String value = groupListBox.getValue(validate); propertyGroupService.getPropertyGroupForm(value, callbackGetPropertyGroupFormDataToValidate); } else { switch (origin) { case UIDockPanelConstants.SEARCH: // Validate button if (groupListBox.getItemCount() > 1) { Main.get().mainPanel.search.searchBrowser.searchIn.searchMetadata.addGroup.setEnabled(true); } else { Main.get().mainPanel.search.searchBrowser.searchIn.searchMetadata.addGroup.setEnabled(false); } validate = -1; // Resets values break; case UIDockPanelConstants.DESKTOP: // Validate button if (groupListBox.getItemCount() > 1) { Main.get().updatePropertyGroupPopup.addGroup.setEnabled(true); } else { Main.get().updatePropertyGroupPopup.addGroup.setEnabled(false); } validate = -1; // Resets values break; } } } }