Java tutorial
// Copyright (C) 2009 The Android Open Source Project // // 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 com.google.gerrit.client.auth.openid; import com.google.gerrit.client.Gerrit; import com.google.gerrit.client.SignInDialog; import com.google.gerrit.client.rpc.GerritCallback; import com.google.gerrit.client.ui.SmallHeading; import com.google.gerrit.common.auth.SignInMode; import com.google.gerrit.common.auth.openid.DiscoveryResult; import com.google.gerrit.common.auth.openid.OpenIdProviderPattern; import com.google.gerrit.common.auth.openid.OpenIdUrls; import com.google.gwt.core.client.Scheduler; import com.google.gwt.core.client.Scheduler.ScheduledCommand; import com.google.gwt.dom.client.FormElement; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.KeyCodes; import com.google.gwt.event.dom.client.KeyPressEvent; import com.google.gwt.event.dom.client.KeyPressHandler; import com.google.gwt.resources.client.ImageResource; import com.google.gwt.user.client.Cookies; import com.google.gwt.user.client.DOM; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Anchor; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.FormPanel; import com.google.gwt.user.client.ui.FormPanel.SubmitEvent; import com.google.gwt.user.client.ui.FormSubmitCompleteEvent; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.Hidden; import com.google.gwt.user.client.ui.Image; import com.google.gwt.user.client.ui.InlineLabel; import com.google.gwtexpui.globalkey.client.NpTextBox; import java.util.Map; public class OpenIdSignInDialog extends SignInDialog implements FormPanel.SubmitHandler { static { OpenIdResources.I.css().ensureInjected(); } private final FlowPanel panelWidget; private final FormPanel form; private final FlowPanel formBody; private final FormPanel redirectForm; private final FlowPanel redirectBody; private FlowPanel errorLine; private InlineLabel errorMsg; private Button login; private NpTextBox providerId; private CheckBox rememberId; private boolean discovering; public OpenIdSignInDialog(final SignInMode requestedMode, final String token, final String initialErrorMsg) { super(requestedMode, token); formBody = new FlowPanel(); formBody.setStyleName(OpenIdResources.I.css().loginForm()); form = new FormPanel(); form.setMethod(FormPanel.METHOD_GET); form.addSubmitHandler(this); form.add(formBody); redirectBody = new FlowPanel(); redirectBody.setVisible(false); redirectForm = new FormPanel(); redirectForm.add(redirectBody); panelWidget = new FlowPanel(); panelWidget.add(form); panelWidget.add(redirectForm); add(panelWidget); createHeaderLogo(); createHeaderText(); createErrorBox(); createIdentBox(); link(OpenIdUrls.URL_GOOGLE, OpenIdUtil.C.nameGoogle(), OpenIdResources.I.iconGoogle()); link(OpenIdUrls.URL_YAHOO, OpenIdUtil.C.nameYahoo(), OpenIdResources.I.iconYahoo()); if (initialErrorMsg != null) { showError(initialErrorMsg); } formBody.add(new HTML(OpenIdUtil.C.whatIsOpenIDHtml())); } @Override public void show() { super.show(); providerId.selectAll(); Scheduler.get().scheduleDeferred(new ScheduledCommand() { @Override public void execute() { providerId.setFocus(true); } }); } private void createHeaderLogo() { final FlowPanel headerLogo = new FlowPanel(); headerLogo.setStyleName(OpenIdResources.I.css().logo()); headerLogo.add(new Image(OpenIdResources.I.openidLogo())); formBody.add(headerLogo); } private void createHeaderText() { final FlowPanel headerText = new FlowPanel(); final String me = Window.Location.getHostName(); final SmallHeading headerLabel = new SmallHeading(); switch (mode) { case LINK_IDENTIY: headerLabel.setText(OpenIdUtil.M.linkAt(me)); break; case REGISTER: headerLabel.setText(OpenIdUtil.M.registerAt(me)); break; case SIGN_IN: default: headerLabel.setText(OpenIdUtil.M.signInAt(me)); break; } headerText.add(headerLabel); formBody.add(headerText); } private void createErrorBox() { errorLine = new FlowPanel(); DOM.setStyleAttribute(errorLine.getElement(), "visibility", "hidden"); errorLine.setStyleName(OpenIdResources.I.css().error()); errorMsg = new InlineLabel(); errorLine.add(errorMsg); formBody.add(errorLine); } private void showError(final String msgText) { errorMsg.setText(msgText); DOM.setStyleAttribute(errorLine.getElement(), "visibility", ""); } private void hideError() { DOM.setStyleAttribute(errorLine.getElement(), "visibility", "hidden"); } private void createIdentBox() { boolean remember = mode == SignInMode.SIGN_IN || mode == SignInMode.REGISTER; final FlowPanel group = new FlowPanel(); group.setStyleName(OpenIdResources.I.css().loginLine()); final FlowPanel line1 = new FlowPanel(); group.add(line1); providerId = new NpTextBox(); providerId.setVisibleLength(60); providerId.setStyleName(OpenIdResources.I.css().identifier()); providerId.setTabIndex(0); providerId.addKeyPressHandler(new KeyPressHandler() { @Override public void onKeyPress(final KeyPressEvent event) { if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER) { event.preventDefault(); form.submit(); } } }); line1.add(providerId); login = new Button(); switch (mode) { case LINK_IDENTIY: login.setText(OpenIdUtil.C.buttonLinkId()); break; case REGISTER: login.setText(OpenIdUtil.C.buttonRegister()); break; case SIGN_IN: default: login.setText(OpenIdUtil.C.buttonSignIn()); break; } login.addClickHandler(new ClickHandler() { @Override public void onClick(final ClickEvent event) { form.submit(); } }); login.setTabIndex(remember ? 2 : 1); line1.add(login); Button close = new Button(Gerrit.C.signInDialogClose()); close.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { hide(); } }); close.setTabIndex(remember ? 3 : 2); line1.add(close); if (remember) { rememberId = new CheckBox(OpenIdUtil.C.rememberMe()); rememberId.setTabIndex(1); group.add(rememberId); String last = Cookies.getCookie(OpenIdUrls.LASTID_COOKIE); if (last != null && !"".equals(last)) { if (last.startsWith("\"") && last.endsWith("\"")) { // Dequote the value. We shouldn't have to do this, but // something is causing some Google Account tokens to get // wrapped up in double quotes when obtained from the cookie. // last = last.substring(1, last.length() - 2); } providerId.setText(last); rememberId.setValue(true); } } formBody.add(group); } private void link(final String identUrl, final String who, final ImageResource icon) { if (!isAllowedProvider(identUrl)) { return; } final ClickHandler i = new ClickHandler() { @Override public void onClick(final ClickEvent event) { event.preventDefault(); if (!discovering) { providerId.setText(identUrl); form.submit(); } } }; final FlowPanel line = new FlowPanel(); line.addStyleName(OpenIdResources.I.css().directLink()); final Image img = new Image(icon); img.addClickHandler(i); line.add(img); final Anchor text = new Anchor(); switch (mode) { case LINK_IDENTIY: text.setText(OpenIdUtil.M.linkWith(who)); break; case REGISTER: text.setText(OpenIdUtil.M.registerWith(who)); break; case SIGN_IN: default: text.setText(OpenIdUtil.M.signInWith(who)); break; } text.setHref(identUrl); text.addClickHandler(i); line.add(text); formBody.add(line); } private static boolean isAllowedProvider(final String identUrl) { for (OpenIdProviderPattern p : Gerrit.getConfig().getAllowedOpenIDs()) { if (p.matches(identUrl)) { return true; } } return false; } private void enable(final boolean on) { providerId.setEnabled(on); login.setEnabled(on); } private void onDiscovery(final DiscoveryResult result) { discovering = false; switch (result.status) { case VALID: // The provider won't support operation inside an IFRAME, // so we replace our entire application. // redirectForm.setMethod(FormPanel.METHOD_POST); redirectForm.setAction(result.providerUrl); redirectBody.clear(); for (final Map.Entry<String, String> e : result.providerArgs.entrySet()) { redirectBody.add(new Hidden(e.getKey(), e.getValue())); } FormElement.as(redirectForm.getElement()).setTarget("_top"); redirectForm.submit(); break; case NOT_ALLOWED: showError(OpenIdUtil.C.notAllowed()); enableRetryDiscovery(); break; case NO_PROVIDER: showError(OpenIdUtil.C.noProvider()); enableRetryDiscovery(); break; case ERROR: default: showError(OpenIdUtil.C.error()); enableRetryDiscovery(); break; } } private void enableRetryDiscovery() { enable(true); providerId.selectAll(); providerId.setFocus(true); } @Override public void onSubmit(final SubmitEvent event) { event.cancel(); String openidIdentifier = providerId.getText(); if (openidIdentifier == null || openidIdentifier.equals("")) { enable(true); return; } if (!openidIdentifier.startsWith("http://") && !openidIdentifier.startsWith("https://")) { openidIdentifier = "http://" + openidIdentifier; } if (!isAllowedProvider(openidIdentifier)) { showError(OpenIdUtil.C.notAllowed()); enableRetryDiscovery(); return; } discovering = true; enable(false); hideError(); final boolean remember = rememberId != null && rememberId.getValue(); OpenIdUtil.SVC.discover(openidIdentifier, mode, remember, token, new GerritCallback<DiscoveryResult>() { public void onSuccess(final DiscoveryResult result) { onDiscovery(result); } @Override public void onFailure(final Throwable caught) { super.onFailure(caught); enableRetryDiscovery(); } }); } public void onSubmitComplete(final FormSubmitCompleteEvent event) { } }