Java tutorial
/* * JBoss, Home of Professional Open Source * Copyright 2008-12, Red Hat Middleware LLC, and others contributors as indicated * by the @authors tag. All rights reserved. * See the copyright.txt in the distribution for a * full listing of individual contributors. * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions * of the GNU Lesser General Public License, v. 2.1. * This program is distributed in the hope that it will be useful, but WITHOUT A * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. * You should have received a copy of the GNU Lesser General Public License, * v.2.1 along with this distribution; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. */ package org.overlord.gadgets.web.client.widgets; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Set; import org.overlord.gadgets.web.client.URLBuilder; import org.overlord.gadgets.web.client.model.JSOParser; import org.overlord.gadgets.web.client.util.RestfulInvoker; import org.overlord.gadgets.web.shared.dto.UserPreference; import org.overlord.gadgets.web.shared.dto.UserPreference.Option; import org.overlord.gadgets.web.shared.dto.UserPreference.UserPreferenceSetting; import org.overlord.gadgets.web.shared.dto.WidgetModel; import com.allen_sauer.gwt.log.client.Log; 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.http.client.Request; import com.google.gwt.http.client.RequestBuilder; import com.google.gwt.http.client.Response; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.user.client.Element; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Button; 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.Frame; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.InlineLabel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.ListBox; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.Widget; /** * @author: Jeff Yu * @date: 2/03/12 */ public class Portlet extends Composite { interface PortletUiBinder extends UiBinder<Widget, Portlet> { } private static PortletUiBinder uiBinder = GWT.create(PortletUiBinder.class); private static String urlBase; private String id; private String widgetId; //This is the portalLayout Id. private String portalId; private String iframeId; private WidgetModel wmodel; private String userPreferenceValues; private List<Widget> prefs = new ArrayList<Widget>(); @UiField InlineLabel minBtn; @UiField InlineLabel title; @UiField InlineLabel removeBtn; @UiField InlineLabel maxBtn; @UiField InlineLabel settingBtn; @UiField InlineLabel restoreBtn; @UiField FlowPanel userPreference; @UiField FlowPanel portletContent; @UiField Frame gadgetSpec; @UiField FlexTable prefTable; private Portlet(final String wid, final String pid) { widgetId = wid; id = "portlet-" + widgetId; this.portalId = pid; this.iframeId = "iframe-" + widgetId; initWidget(uiBinder.createAndBindUi(this)); getElement().setId(id); gadgetSpec.getElement().setId(iframeId); gadgetSpec.getElement().setAttribute("frameborder", "0"); urlBase = getGadgetServerUrlBase(); minBtn.addClickHandler(new ClickHandler() { public void onClick(ClickEvent clickEvent) { toggle(id); } }); removeBtn.addClickHandler(new ClickHandler() { public void onClick(ClickEvent clickEvent) { if (Window.confirm("Are you sure to delete this widget?")) { String theURL = URLBuilder.getRemoveWidgetURL(Long.valueOf(widgetId)); RestfulInvoker.invoke(RequestBuilder.POST, theURL, null, new RestfulInvoker.Response() { public void onResponseReceived(Request request, Response response) { remove(id); } }); } } }); maxBtn.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { maximizeWindow(id, portalId); hideUserPref(id); showRestoreButton(id); gadgetSpec.setWidth("100%"); gadgetSpec.setHeight("90%"); gadgetSpec.getElement().setAttribute("scrolling", "auto"); gadgetSpec.setUrl(urlBase + "gadget-server/gadgets/ifr?url=" + wmodel.getSpecUrl() + "&" + getCanvasView() + "&" + userPreferenceValues); } }); restoreBtn.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { restoreWindow(id); hideRestoreButton(id); gadgetSpec.setWidth("100%"); gadgetSpec.setHeight("250px"); gadgetSpec.getElement().setAttribute("scrolling", "auto"); gadgetSpec.setUrl(urlBase + "gadget-server/gadgets/ifr?url=" + wmodel.getSpecUrl() + "&" + getHomeView() + "&" + userPreferenceValues); } }); settingBtn.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { showUserPref(id); } }); gadgetSpec.getElement().setId(widgetId); } public Portlet(WidgetModel model, final int width, String portalId) { this(String.valueOf(model.getWidgetId()), portalId); title.setText(model.getName()); wmodel = model; RestfulInvoker.invoke(RequestBuilder.GET, URLBuilder.getPreferenceValuesURL(Long.valueOf(widgetId)), null, new RestfulInvoker.Response() { public void onResponseReceived(Request request, Response response) { Map<String, String> defaultValues = JSOParser.getPreferenceValues(response.getText()); generateUserPref(wmodel, defaultValues); generatePreferenceValuesString(defaultValues); gadgetSpec.getElement().setAttribute("scrolling", "auto"); gadgetSpec.getElement().setAttribute("frameborder", "0"); gadgetSpec.setWidth(width - 20 + "px"); gadgetSpec.setHeight("250px"); gadgetSpec.setUrl(urlBase + "gadget-server/gadgets/ifr?url=" + wmodel.getSpecUrl() + "&" + getHomeView() + "&" + userPreferenceValues); } }); } private void generatePreferenceValuesString(Map<String, String> value) { StringBuilder sbuilder = new StringBuilder(); int i = 1; for (String key : value.keySet()) { sbuilder.append(key).append("=").append(value.get(key)); if (i < value.size()) { sbuilder.append("&"); } i++; } this.userPreferenceValues = sbuilder.toString(); } private String getGadgetServerUrlBase() { String gadgetWebUrlBase = GWT.getHostPageBaseURL(); int end = gadgetWebUrlBase.indexOf("gadget-web"); return gadgetWebUrlBase.substring(0, end); } private void generateUserPref(WidgetModel model, Map<String, String> values) { UserPreference pref = model.getUserPreference(); int row = 0; for (UserPreferenceSetting prefSet : pref.getData()) { if (UserPreference.Type.STRING.equals(prefSet.getType())) { prefTable.setWidget(row, 0, new Label(prefSet.getDisplayName())); Widget textBox = createTextBox(prefSet.getName(), getDefaultValue(values, prefSet.getName(), prefSet.getDefaultValue())); prefs.add(textBox); prefTable.setWidget(row, 1, textBox); } else if (UserPreference.Type.ENUM.equals(prefSet.getType())) { prefTable.setWidget(row, 0, new Label(prefSet.getDisplayName())); List<String> options = new ArrayList<String>(); for (Option option : prefSet.getEnumOptions()) { options.add(option.getValue()); } Widget listBox = createSelectBox(prefSet.getName(), getDefaultValue(values, prefSet.getName(), prefSet.getDefaultValue()), options); prefs.add(listBox); prefTable.setWidget(row, 1, listBox); } else if (UserPreference.Type.LIST.equals(prefSet.getType())) { prefTable.setWidget(row, 0, new Label(prefSet.getDisplayName())); Widget listBox = createSelectBox(prefSet.getName(), getDefaultValue(values, prefSet.getName(), prefSet.getDefaultValue()), prefSet.getListOptions()); prefs.add(listBox); prefTable.setWidget(row, 1, listBox); } row++; } prefTable.setWidget(row, 1, createPrefSettingButtons()); } private String getDefaultValue(Map<String, String> values, String name, String defaultValue) { if (values.get(name) != null) { return values.get(name); } return defaultValue; } private Widget createTextBox(String name, String defaultVal) { TextBox textBox = new TextBox(); //hack, set the name to id as well for jquery retrieval. textBox.getElement().setId(name); textBox.setName(name); textBox.setValue(defaultVal); return textBox; } private Widget createSelectBox(String name, String defaultVal, List<String> options) { ListBox listBox = new ListBox(false); listBox.setName(name); listBox.getElement().setId(name); for (String option : options) { listBox.addItem(option); } if (options.size() == 0) { listBox.addItem(" "); } int index = 0; for (int i = 0; i < options.size(); i++) { if (options.get(i).equals(defaultVal)) { index = i; } } listBox.setSelectedIndex(index); return listBox; } private Widget createPrefSettingButtons() { HorizontalPanel btnPanel = new HorizontalPanel(); Button saveBtn = new Button("Save"); saveBtn.getElement().setId("pref-save"); Button cancelBtn = new Button("Cancel"); btnPanel.add(saveBtn); saveBtn.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { StringBuilder sbuffer = new StringBuilder(); sbuffer.append("{"); StringBuilder updatedValue = new StringBuilder(); for (int i = 0; i < prefs.size(); i++) { Widget theWidget = prefs.get(i); String name = null; String value = null; if (theWidget instanceof TextBox) { TextBox tbox = (TextBox) theWidget; name = tbox.getName(); value = tbox.getValue(); } else if (theWidget instanceof ListBox) { ListBox lbox = (ListBox) theWidget; name = lbox.getName(); value = lbox.getValue(lbox.getSelectedIndex()); } if (name != null) { sbuffer.append("\"" + name + "\":\"" + value + "\""); updatedValue.append(name).append("=").append(value); if (i < prefs.size() - 1) { sbuffer.append(","); updatedValue.append("&"); } } } sbuffer.append("}"); Log.debug("The map value is: " + sbuffer.toString()); userPreferenceValues = updatedValue.toString(); Log.debug("The userPreferenceValues is : " + userPreferenceValues); RestfulInvoker.invoke(RequestBuilder.POST, URLBuilder.updatePreferenceURL(Long.valueOf(widgetId)), sbuffer.toString(), new RestfulInvoker.Response() { public void onResponseReceived(Request request, Response response) { hideUserPref(id); String newUrl = urlBase + "gadget-server/gadgets/ifr?url=" + wmodel.getSpecUrl() + "&" + getHomeView() + "&" + userPreferenceValues; //gadgetSpec.setUrl(newUrl); Log.debug("the new url is: " + newUrl); //reloadIFrame(gadgetSpec.getElement().getId()); reloadGadget(gadgetSpec.getElement().getId(), newUrl); } }); } }); btnPanel.add(cancelBtn); cancelBtn.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { hideUserPref(id); } }); return btnPanel; } public String getHomeView() { return "view=home"; } public String getCanvasView() { return "view=canvas"; } @Override public void onAttach() { super.onAttach(); hideRestoreButton(id); hideUserPref(id); } /** * JSNI methods */ private static native void toggle(String id) /*-{ $wnd.$('#' + id).find(".portlet-min") .toggleClass( "ui-icon-triangle-1-s" ) .toggleClass( "ui-icon-triangle-1-n" ); $wnd.$('#' + id).find(".portlet-content").toggle(); }-*/; private static native void remove(String id) /*-{ $wnd.$('#' + id).remove(); }-*/; private static native void showUserPreference(String id) /*-{ $wnd.$('#' + id).find(".portlet-menu").show(); }-*/; private static native void hideRestoreButton(String id) /*-{ $wnd.$('#'+id).find(".portlet-restore").hide(); $wnd.$('#'+id).find(".portlet-max").show(); $wnd.$('#'+id).find(".portlet-setting").show(); $wnd.$('#'+id).find(".portlet-close").show(); }-*/; private static native void showRestoreButton(String id) /*-{ $wnd.$('#'+id).find(".portlet-restore").show(); $wnd.$('#'+id).find(".portlet-max").hide(); $wnd.$('#'+id).find(".portlet-setting").hide(); $wnd.$('#'+id).find(".portlet-close").hide(); }-*/; private static native void maximizeWindow(String id, String portalId) /*-{ var overlay = $wnd.$('<div></div>'); var jqElm = $wnd.$('#' + portalId); var styleMap = { position: "absolute", height : jqElm.height(), width : jqElm.width(), 'z-index': 10, opacity : 0.7, background : "#FFFFFF" }; $wnd.$(overlay).css(styleMap); $wnd.$(overlay).addClass("added-overlay"); jqElm.prepend(overlay[0]); $wnd.$(".column").sortable( "option", "disabled", true); $wnd.$('#' + id).removeClass("portlet").addClass("portlet-canvas"); }-*/; private static native void restoreWindow(String id) /*-{ $wnd.$(".added-overlay").remove(); $wnd.$(".column").sortable( "option", "disabled", false); $wnd.$('#' + id).removeClass("portlet-canvas").addClass("portlet"); }-*/; private static native void hideUserPref(String id) /*-{ $wnd.$('#' + id).find(".portlet-preference").hide(); }-*/; private static native void showUserPref(String id) /*-{ $wnd.$('#' + id).find(".portlet-preference").show(); }-*/; private static native void reloadIFrame(String iframeId) /*-{ $wnd.document.getElementById(iframeId).reload(true); }-*/; private static native void reloadGadget(String iframeId, String url) /*-{ $wnd.reloadGadget(iframeId, url); }-*/; private static native void setPreference(String name, String value) /*-{ var prefs = new gadgets.Prefs(); prefs.set(name, value); }-*/; }