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<title>Vaadin Framework @version@</title>
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<body>
    <div id="header">
        <h1>Vaadin &ndash; thinking of U and I</h1>
        <div id="version">
            <strong>Version @version@</strong>
        </div>
    </div>
    <!-- /header -->

    <div id="content">
        <p>Version @version@ built on @builddate@.</p>

        <h2 id="tableofcontents">Release Notes for Vaadin Framework
            @version@</h2>
        <ul>
            <li><a href="#overview">Overview of Vaadin Framework
                    @version@ release</a></li>
            <li><a href="#changelog">Change Log for Vaadin Framework
                    @version@</a></li>
            <li><a href="#enhancements">Enhancements in Vaadin Framework
                    @version-minor@</a></li>
            <li><a href="#incompatible">Incompatible or Behavior-altering Changes in
                    @version-minor@</a></li>
            <li><a href="#knownissues">Known Issues and Limitations</a></li>
            <li><a href="#starting">Getting started with Vaadin Framework</a></li>
            <li><a href="#package">Package Contents</a></li>
            <li><a href="#migrating">Migrating from Vaadin 7.7</a></li>
            <li><a href="#dependencies">Vaadin Framework @version@
                    dependencies</a></li>
            <li><a href="#supportedversions">Supported
                    Technologies</a></li>
            <li><a href="#vaadinontheweb">Vaadin Framework on the Web</a></li>
        </ul>

        <h2 id="overview">Overview of Vaadin Framework @version@ Release</h2>

        <p>
            Vaadin Framework @version@ is a
<!--            feature release that includes -->
            pre-release for evaluating
            a number of new features and bug fixes, as listed in the <a
                href="#enhancements">list of enhancements</a> and <a
                href="#changelog">change log</a> below.
		This beta release contains breaking changes based on your feedback on the previous beta version,
		and we may change things on future beta versions based on your feedback if necessary.
	</p>
	<p>	Special note for add-on developers: please test your add-on against 
		Framework 8.0 and update your add-on as needed.
		
        </p>

        <!-- ================================================================ -->
        <h3 id="changelog">Change Log for Vaadin Framework @version@</h3>
	<!-- @release-notes-changelog@ -->
        <p>
            You can find the full list of all changes <a
                href="https://github.com/vaadin/framework/releases/tag/@version@">in
                GitHub</a>.
        </p>

        <h2 id="enhancements">Enhancements in Vaadin Framework @version-minor@</h2>

        <p>Vaadin Framework @version-minor@ includes many major and minor
            enhancements. Below is a list of the most notable changes:</p>

        <ul>
            <li>New, simpler data binding API</li>
            <li>Vaadin Framework is now based on Java 8</li>
            <li>Vaadin Framework is using GWT 2.8, allowing client side code to use Java 8</li>
            <li>Other Framework dependencies including Atmosphere have been upgraded</li>
            <li>Easier to integrate web components using HTML imports (<tt>@HtmlImport</tt>) and custom tag name support for <tt>AbstractJavaScriptComponent</tt></li>
        </ul>

        <p>
            The new data binding API replaces the old <tt>Container</tt>, <tt>Item</tt>, <tt>Property</tt>, <tt>FieldGroup</tt>,
            <tt>Validator</tt>, <tt>Converter</tt> and related classes with new mechanisms.
            Also components using those are replaced with updated implementations using the
            new API, and the old data binding API and components have been moved to separate
            compatibility packages for ease of migration.
            For more details, see <a href="#incompatible">the list of incompatible changes</a> and <a href="#migrating">how to migrate
            to Vaadin Framework 8</a>.
        </p>

        <p>
            For enhancements introduced in Vaadin Framework 7.7, see the <a
                href="http://vaadin.com/download/release/7.7/7.7.0/release-notes.html">Release
                Notes for Vaadin Framework 7.7.0</a>.
        </p>

        <h2 id="incompatible">Incompatible or Behavior-altering Changes in @version@</h2>
        
        <ul><h4>Compatibility and requirements</h4>
            <li>Vaadin Framework now requires Java 8 or later and Servlet 3.0 or later</li>
            <li>Support for older browsers (including Microsoft IE 8-10) and Windows Phone has been dropped</li>
            <li>Support for Google App Engine has been dropped</li>
            <li><a href="#supportedservers">Supported servers</a></li>
        </ul>
        <ul><h4>New Data Binding API related changes</h4>
            <li>Components using <tt>Property</tt>, <tt>Item</tt> or <tt>Container</tt> API have been reimplemented for the new API, except <tt>Tree</tt>, <tt>Table</tt>, <tt>TreeTable</tt> and <tt>Calendar</tt></li>
            <li>Framework 7 versions of the components available in the v7 compatibility package for easier migration, <a href="#legacycomponents">see list of legacy components</a></li>
            <li><tt>Binder</tt> is the replacement of <tt>FieldGroup</tt> and <tt>BeanFieldGroup</tt></li>
            <li>Converters and Validators have been moved from Components to <tt>Binder</tt></li>
            <li><tt>DataProvider</tt> is the replacement of <tt>Container</tt></li>
            <ul>
                <li><tt>ListDataProvider</tt> is the default in-memory data provider replacing <tt>IndexedContainer</tt>, <tt>BeanItemContainer</tt>, and <tt>BeanContainer</tt></li>
                <li><tt>BackEndDataProvider</tt> is the basis for a lazy data provider</li>
                <li><tt>SQLContainer</tt> is deprecated in v7 compatibility package and not directly replaced</li>
                <li><tt>HierarchicalContainer</tt> is deprecated in v7 compatibility package and a replacement is planned for 8.1</li>
            </ul>
            <li>All components that list data are based on <tt>AbstractListing</tt></li>
            <li>All <tt>AbstractListing</tt> components have been typed with the type of items they are listing</li>
            <li><tt>HasValue</tt> replaces the <tt>Field</tt> interface as the basis for all field components</li>
            <li>Field components based on <tt>HasValue</tt> may or may not accept null values, depending on each component. There is no <tt>setNullRepresentation</tt> anymore</li>
            <li><tt>AbstractField::setRequired(boolean)</tt> has been replaced with:
            <ul>
                <li><tt>HasValue::setRequiredIndicatorVisible(boolean)</tt> which only makes the <tt>*</tt> required indicator visible for the component</li>
                <li><tt>BindingBuilder::setRequired(String)</tt> adds a "not-empty" validator when used in <tt>Binder</tt> and makes the <tt>*</tt> required indicator visible</li>
            </ul>
            <li><tt>setItemCaptionGenerator</tt> in <tt>AbstractListing</tt> replaces <tt>setItemCaption</tt>, <tt>setItemCaptionMode</tt> and <tt>setItemCaptionPropertyId</tt> from <tt>AbstractSelect</tt></li>
            <li><tt>setItemIconGenerator</tt> in <tt>AbstractListing</tt> replaces <tt>setItemIcon</tt> and <tt>setItemIconPropertyId</tt> from <tt>AbstractSelect</tt></li>
        </ul>
        <ul><h4>General API changes</h4>
            <li>All listeners and most single method interfaces have been marked as <tt>@FunctionalInterface</tt></li>
            <li>All components are now immediate, and <tt>AbstractComponent::setImmediate(boolean immediate)</tt> has been removed.</li>
            <li>Read-only is now a feature for field components and has been moved from <tt>AbstractComponent</tt> to <tt>HasValue</tt> </li>
            <li>Some deprecated/obsolete parts of API have been removed</li>
            <li>All addListener/removeListener methods have been removed - replaced with the Java 8 friendly <tt>addClickListener()</tt>, <tt>addValueChangeListener()</tt> etc. instead</li>
            <li>All new listeners are unregistered using a <tt>Registration</tt> object returned by <tt>addXyzListener()</tt> rather than with a separate <tt>removeXyzListener()</tt></li>
            <li>Input prompts have been replaced with placeholders utilizing the related browser functionality, API is now <tt>setPlaceHolder</tt> instead of <tt>setInputPrompt</tt></li>
            <li>Valo is the default theme, instead of Reindeer</li>
            <li>Valo is the only included theme, all other themes have been moved to the <tt>compatiblity-themes</tt> package and are available as a separate dependency</li>
            <li><tt>SharedState</tt> and the getter methods for it have been added to each component, regardless of whether those are used for anything or not</li>
            <li>The old liferay theme (Liferay 6.0 look) has been removed</li>
            <li>FontAwesome icon constants have been deprecated, and will not be updated. It is replaced with <a href="https://vaadin.com/icons">Vaadin Icons</a> that are included in the Framework</li>
            <li>It is no longer possible to configure a <tt>CurrentInstance</tt> to be automatically inherited into spawned threads.</li>
        </ul>
        <ul><h4>Component specific API changes</h4>
            <li><tt>setDescription(String)</tt> now renders tooltip as inner text by default, instead of HTML. HTML can be still used by using <tt>setDescription(String, ContentMode)</tt></li>
            <li><tt>com.vaadin.shared.ui.label.ContentMode</tt> has been moved into <tt>com.vaadin.shared.ui</tt></li>
            <li><tt>DateField</tt> replaces old <tt>PopupDateField</tt></li>
            <li><tt>DateField</tt> and <tt>InlineDateField</tt> are now based on Java 8 <tt>LocalDate</tt> instead of <tt>Date</tt></li>
            <li><tt>DateTimeField</tt> and <tt>InlineDateTimeField</tt> based on Java 8 <tt>LocalDateTime</tt> are introduced for time selecting time (hour / minute / second) </li>
            <ul><li><tt>DateField</tt> and <tt>InlineDateField</tt> don't support time anymore, meaning the highest resolution for those is <tt>DateResolution.DAY</tt></li>
            <li><tt>Resolution</tt> for <tt>DateField</tt> and <tt>InlineDateField</tt> is replaced by <tt>DateResolution</tt> and <tt>DateTimeResolution</tt></li></ul>
            <li><tt>OptionGroup</tt> has been removed and replaced by:</li>
            <ul>
                <li><tt>CheckBoxGroup</tt> replaces <tt>OptionGroup</tt> in multiselect mode</li>
                <li><tt>RadioButtonGroup</tt> replaces <tt>OptionGroup</tt> in single select mode</li>
                <ul><tt>OptionGroup::setItemEnabled(Object, boolean)</tt> has been replaced by <tt>setItemEnabledProvider</tt> that accepts a predicate</ul>
            </ul>
            <li><tt>TwinColSelect</tt> is always in multiselect mode</li>
            <li><tt>ListSelect</tt> is always in multiselect mode</li>
            <li><tt>Upload</tt> has a separate immediate mode <tt>setImmediateMode(boolean)</tt> replacing <tt>setImmediate</tt> and is now by default in immediate mode</li>
            <li><tt>RichTextArea</tt> no longer receives a special "v-richtextarea-readonly" class when readonly, only the standard "v-readonly" class</li>
            <li><tt>Grid</tt> has been typed to the bean type it is using and its columns are specified with a value provider callback instead of "propertyId"</li>
            <li><tt>Grid</tt> Editor now uses <tt>Binder</tt> instead of <tt>FieldGroup</tt>, and doesn't support a <tt>FieldFactory</tt></li>
            <li><tt>Grid</tt> selection API has been removed from component level to <tt>GridSelectionModel</tt> which is available via <tt>Grid::getSelectionModel()</tt></li>
            <li><tt>Grid::setSelectionModel(GridSelectionModel)</tt> visibility has been changed from <tt>public</tt> to <tt>protected</tt> to reduce confusion with <tt>Grid::setSelectionMode</tt></li>
        </ul>
        <ul><h4>Client side widget specific API changes</h4>
            <li><tt>VTextualDate</tt></li> widget class is removed and replaced by abstract <tt>VAbstractTextualDate</tt> class which is supposed to be inherited by concrete date field implementation widgets
        </ul>
        <ul><h4>Component specific visual changes</h4>
            <li>The default width of <tt>Label</tt> is now undefined, matching other components</li>
            <li>The default width for <tt>ComboBox</tt> pop-up is now 100 % (previously undefined)</li>
            <li><tt>VerticalLayout</tt> has by default <tt>spacing = true</tt> and <tt>margin = true</tt></li>
            <li><tt>HorizontalLayout</tt> has by default <tt>spacing = true</tt> and <tt>margin = false</tt></li>
        </ul>
        <ul><h4>Component specific declarative syntax changes</h4>
            <li>Components in the compatibility packages now use the prefix <tt>vaadin7-"</tt> in declarative design files</li>
            <li><tt>required-indicator-visible</tt> attribute replaces the <tt>required</tt> attribute</li>
            <li><tt>placeholder</tt> attribute replaces the <tt>input-prompt</tt> attribute for input components</li>
            <li><tt>multi-select</tt> attribute is no longer used for select components</li>
            <li><tt>vaadin-option-group</tt> with attribute <tt>multi-select=true</tt> is replaced by <tt>v-check-box-group</tt></li>
            <li><tt>vaadin-option-group</tt> with attribute <tt>multi-select=false</tt> is replaced by <tt>v-radio-button-group</tt></li>
            <li><tt>immediate</tt> attribute is not used for any component</li>
            <li><tt>read-only</tt> attribute is now only used for field components instead of all components</li>
            <li><tt>vaadin-upload</tt> has a new attribute <tt>immediate-mode</tt> that replaces the removed <tt>immediate</tt> attribue</li>
            <li><tt>vaadin-grid</tt> column elements don't have <tt>property-id</tt> attribute anymore. Columns aren't addressed by a property anymore but they have an id. So there is <tt>column-id</tt> attribute instead</li>
            <li><tt>vaadin-grid</tt> doesn't have <tt>readonly</tt> attribute anymore. It  is replaced by <tt>selection-allowed</tt> attribute which has special meaning for a <tt>Grid</tt></li> 
        </ul>
        <ul id="legacycomponents"><h4>Legacy components in the v7 compatiblity package <tt>com.vaadin.v7.ui</tt> available as a separate dependency</h4>
            <li><tt>Calendar</tt> - no replacement in 8</li>
            <li><tt>CheckBox</tt></li>
            <li><tt>ColorPicker</tt></li>
            <li><tt>ColorPickerArea</tt></li>
            <li><tt>ComboBox</tt></li>
            <li><tt>CustomField</tt></li>
            <li><tt>DateField</tt> - replaced in 8 by <tt>DateField</tt> and <tt>DateTimeField</tt></li>
            <li><tt>Form</tt> - no replacement in 8</li>
            <li><tt>Grid</tt> (and renderers)</li>
            <li><tt>HorizontalLayout</tt></li>
            <li><tt>InlineDateField</tt> - replaced in 8 by <tt>InlineDateField</tt> and <tt>InlineDateTimeField</tt></li>
            <li><tt>Label</tt></li>
            <li><tt>ListSelect</tt></li>
            <li><tt>NativeSelect</tt></li>
            <li><tt>OptionGroup</tt> - replaced by <tt>CheckBoxGroup</tt> (multiselection) and <tt>RadioButtonGroup</tt> (single selection)</li>
            <li><tt>PasswordField</tt></li>
            <li><tt>PopupDateField</tt> - replaced in 8 by <tt>DateField</tt> and <tt>DateTimeField</tt></li>
            <li><tt>ProgressBar</tt></li>
            <li><tt>ProgressIndicator</tt></li>
            <li><tt>RichTextArea</tt></li>
            <li><tt>Select</tt> - removed, use <tt>ComboBox</tt> for single selection and <tt>ListSelect</tt> for multiselection</li>
            <li><tt>Table</tt> - no replacement in 8.0, use Grid.</li>
            <li><tt>TextArea</tt></li>
            <li><tt>TextField</tt></li>
            <li><tt>Tree</tt> - no replacement in 8.0, planned for 8.1</li>
            <li><tt>TreeTable</tt> - no replacement in 8.0, TreeGrid planned for 8.1</li>
            <li><tt>TwinColSelect</tt></li>
            <li><tt>VerticalLayout</tt></li>
            <li><tt>Upload</tt></li>
        </ul>
                
        <h3 id="knownissues">Known Issues and Limitations</h3>
        <ul>
            <li>Drag'n'drop in a Table doesn't work on touch devices running
                Internet Explorer (Windows Phone, Surface)
                (<a href="https://github.com/vaadin/framework/issues/5170">#5170</a>)
            </li>
            <li>Specifying layout sizes using <tt>em</tt> is currently discouraged, because it results in fractional
            components sizes in many cases, which might cause unwanted 1px gaps between components.
            </li>
            <li>Up-to-date information about configuration needed for push and compatibility issues are available in
            <a href="https://vaadin.com/wiki/-/wiki/Main/Configuring+push+for+your+environment">this wiki page.</a>
            <br />
            The most prominent limitations are:
            <ul>
                <li>Push is currently not supported in portals (See <a
                    href="https://github.com/vaadin/framework/issues/3741">#3741</a>)
                </li>
                <li>>Transport mode WEBSOCKET does not support invalidating the session on Tomcat 7,
                     nor setting cookies for the session. The new transport mode WEBSOCKET_XHR can be
                     used to bypass these limitations.
                     <br />
                     See tickets <a href="https://github.com/vaadin/framework/issues/3911">#3911</a> and
                     <a href="https://github.com/vaadin/framework/issues/3861">#3861</a>
                </li>
            </ul>
            </li>
            <li>Grid does not support adding components to cells. Instead light-weight Renderers can be
                used to present and edit data.</li>
            <li>The Maven GWT compilation for <tt>Vaadin7WidgetSet</tt> requires at least 1G of memory, when using the <tt>vaadin-client-compability</tt> package. If compiled inside Eclipse, possibly even more.</li>
        </ul>


        <h2 id="starting">Getting started with Vaadin Framework</h2>

        <p>
            <b>Vaadin Framework</b> is a Java framework for building modern web
            applications that look great, perform well and make you and
            your users happy. <b>The Framework</b> is available under the
            Apache License, Version 2.0 (see the
            <tt>license.html</tt>
            in the Vaadin Framework ZIP package).
        </p>

        <p>
            The easiest ways to start using <b>Vaadin Framework</b> are:
        </p>

        <ul>
            <li><strong>Maven dependency.</strong>If using Maven, define it as a dependency or use
                any of the available archetypes to create a new project. More information at
                <a href="https://vaadin.com/maven">https://vaadin.com/maven</a>
            </li>

            <li><strong>IDE Plugins.</strong>If using Eclipse, use the
                <a href="http://vaadin.com/eclipse">Vaadin Plugin for Eclipse</a>, which automatically
                downloads the Framework libraries. For NetBeans 8.0 and 7.4, use the
                <a href="http://plugins.netbeans.org/plugin/50531/vaadin-plug-in-for-netbeans">official Vaadin plugin</a>
                that provides Maven based wizards and code completion support for Vaadin Framework based development.
            </li>
        </ul>

        <p>
            Vaadin Framework is also available as a ZIP package downloadable from <a
                href="http://vaadin.com/download">Vaadin Download
                page</a>.
        </p>

        <h3 id="package">Package Contents</h3>

        <p>Inside the ZIP installation package you will find:</p>

        <ul>
            <li>Separate server-side (<tt>vaadin-server</tt>) and
                client-side (<tt>vaadin-client</tt>, <tt>vaadin-client-compiler</tt>)
                development libraries
            </li>
            <li>Precompiled widget set (<tt>vaadin-client-compiled</tt>)
                for server-side development
            </li>
            <li>Shared library (<tt>vaadin-shared</tt>) for both
                server- and client-side libraries
            </li>
            <li>Valo theme (the only inbuilt theme) (<tt>vaadin-themes</tt>)
            </li>
            <li>Dependency libraries provided under the <tt>lib/</tt>
                folder
            </li>
            <li>Vaadin 7 compatible classes for server-side (<tt>vaadin-compatibility-server</tt>,
                <tt>vaadin-compatibility-shared</tt>), client-side (<tt>vaadin-compatibility-client</tt>) and themes (<tt>vaadin-compatibility-themes</tt>)
            </li>
        </ul>

        <p>
            See the
            <tt>README.TXT</tt>
            in the installation package for detailed information about
            the package contents.
        </p>

        <p>
            For server-side development, copy the
            <tt>vaadin-server</tt>
            ,
            <tt>vaadin-client-compiled</tt>
            ,
            <tt>vaadin-shared</tt>
            , and
            <tt>vaadin-themes</tt>
            from the main folder and the dependencies from the
            <tt>lib</tt>
            folder to the
            <tt>WEB-INF/lib</tt>
            folder of your Vaadin project. (The
            <tt>vaadin-client-compiled</tt>
            is necessary if you do not wish to compile the widget set by
            your own, which you need to do if you use almost any add-on
            components.)
        </p>

        <h2 id="migrating">Migrating from Vaadin Framework 7.7</h2>

        <p>
            Most Vaadin Framework 7 applications need some changes when migrating
            to Vaadin Framework 8. In addition to updating dependencies, all references to
            Framework 7 style data binding and components using it need to be
            updated either to use new Framework 8 style data binding or to use the
            compatibility versions in separate packages.
        </p>

        <p>
            Vaadin Framework 7 compatible versions of the old data binding API and
            components (with the exception of Form) are available in the package
            com.vaadin.v7 in modules vaadin-compatibility-server,
            vaadin-compatibility-shared etc. that can be used instead of
            vaadin-server, vaadin-shared etc. The package
            vaadin-compatibility-client-compiled contains the widgetset
            <tt>com.vaadin.v7.Vaadin7WidgetSet</tt> which can be used instead of
            <tt>DefaultWidgetSet</tt>.
        </p>
        <p>
        All applications using either <tt>Reindeer</tt>, <tt>Runo</tt>, <tt>Chameleon</tt> or <tt>Base</tt> theme must include the <tt>vaadin-compability-themes</tt> package.
        </p>

        <p>
            There is a <a href="https://github.com/vaadin/framework8-migration-tool/">
            migration tool</a> which helps with some of the migration steps.
        </p>

        <p>
            Some Vaadin Framework 7 add-ons do not work in version 8 - please check the add-ons in <a
                href="http://vaadin.com/directory/">Vaadin Directory</a>
            for Framework version 8 support.
        </p>

        <h3 id="upgrading">Common Upgrade Steps</h3>

        <p>Always when upgrading from an earlier Vaadin Framework version, you
            must:</p>

        <ul>
            <li>Recompile your classes using the new Framework
                version. Binary compatibility is only guaranteed for
                maintenance releases of Framework.</li>

            <li>Unless using the precompiled widget set, recompile
                your widget set using the new Framework version.</li>
        </ul>

        <p>Remember also to refresh the project in your IDE to
            ensure that the new version of everything is in use.</p>

        <p>
            By using the "
            <tt>?debug</tt>
            " URL parameter, you can verify that the version of the
            servlet, the theme, and the widget set all match.
        </p>

        <p>
            <b>Eclipse</b> users should always check if there is a new
            version of the Eclipse Plug-in available.
        </p>

        <p>
            <b>Maven</b> users should update the Vaadin Framework dependency
            version in the
            <tt>pom.xml</tt>
            .
        </p>

        <h2 id="dependencies">Vaadin Framework @version@ Dependencies</h2>

        <p>When using Maven, Ivy, Gradle, or other dependency
            management system, all Framework dependencies are downloaded
            automatically. This is also the case when using the Vaadin
            Plugin for Eclipse.</p>

        <p>
            The Vaadin Framework ZIP installation package includes the
            dependencies in the
            <tt>lib</tt>
            subfolder. These need to be copied to the
            <tt>WEB-INF/lib</tt>
            folder of the web application that uses Vaadin Framework.
        </p>

        <p>
            The dependencies are listed in the <a href="license.html">Licensing
                description</a>. Some are explicit dependencies packaged and
            distributed as separate JARs, while some are included inside
            other libraries.
        </p>

        <h3>Bean Validation</h3>

        <p>
            If you use the bean validation feature, you need
            a Bean Validation API implementation. You need to install
            the implementation JAR in the
            <tt>WEB-INF/lib</tt>
            directory of the web application that uses validation.
        </p>

        <h2 id="supportedversions">Supported Technologies</h2>

        <p>
            Vaadin Framework 8 is compatible with <b>Java 8</b> and newer. Vaadin Framework
            8 is especially supported on the following <b>operating
                systems</b>:
        </p>

        <ul>
            <li>Windows</li>
            <li>Linux</li>
            <li>Mac OS X</li>
        </ul>

        <p>
            Vaadin Framework 8 requires <b>Java Servlet API 3.0</b> but also
            supports later versions and should work with any Java
            application server that conforms to the standard. The
            following <b>application servers</b> are supported:
        </p>

        <ul id="supportedservers">
            <li>Apache Tomcat 7-8</li>
            <li>Apache TomEE 1.7 and 7.0</li>
            <li>Oracle WebLogic Server 12.2</li>
            <li>IBM WebSphere Application Server 9</li>
            <li>JBoss EAP 6</li>
            <li>Wildfly 8-10</li>
            <li>Jetty 8-9</li>
            <li>Glassfish 4</li>
            <li>Payara Server 164</li>
        </ul>

        <p>
            Vaadin Framework 8 supports the JSR-286 Portlet specification and all
            portals that implement the specification should work provided
            they support Java 8 and Servlet 3.0. The following <b>portals</b>
            are supported:
        </p>

        <ul>
            <li>Liferay Portal 6.2</li>
        </ul>

        <p>
            Vaadin Framework @version@ supports the following <b>desktop browsers</b>:
        </p>

        <ul>
            <li>Mozilla Firefox (latest version, currently 48)</li>
            <li>Mozilla Firefox ESR (latest version, currently 45 ESR)</li>
            <li>Internet Explorer 11, Edge (latest version)</li>
            <li>Safari 9+</li>
            <li>Google Chrome (latest version, currently 52)</li>
        </ul>

        <p>
            Additionally, Vaadin Framework supports the built-in browsers in the
            following <b>mobile operating systems</b>:
        </p>

        <ul>
            <li>iOS 9+</li>
            <li>Android 4+ with Chrome 42+</li>
        </ul>

        <h2 id="vaadinontheweb">Vaadin on the Web</h2>

        <ul>
            <li><a href="http://vaadin.com">vaadin.com - The
                    developer portal containing everything you need to
                    know about Vaadin</a></li>
            <li><a href="http://vaadin.com/demo">vaadin.com/demo
                    - A collection of demos for Vaadin Framework</a></li>
            <li><a href="http://vaadin.com/learn">vaadin.com/learn
                    - Getting started with Vaadin Framework</a></li>
            <li><a href="http://vaadin.com/forum">vaadin.com/forum
                    - Forums for Vaadin Framework related discussions</a></li>
            <li><a href="http://vaadin.com/book">vaadin.com/book
                    - Book of Vaadin - everything you need to know about
                    Vaadin Framework</a></li>
            <li><a href="http://vaadin.com/api">vaadin.com/api
                    - Online javadocs</a></li>
            <li><a href="http://vaadin.com/directory">vaadin.com/directory
                    - Add-ons for Vaadin Framework</a></li>

            <li><a href="http://vaadin.com/pro-tools">vaadin.com/pro-tools
                    - Commercial tools for Vaadin Framework</a></li>
            <li><a href="http://vaadin.com/support">vaadin.com/support
                    - Commercial support for Vaadin Framework</a></li>
            <li><a href="http://vaadin.com/services">vaadin.com/services
                    - Expert services for Vaadin Framework users</a></li>
            <li><a href="http://vaadin.com/company">vaadin.com/company
                    - Information about the company behind Vaadin Framework</a></li>
            <li><a href="https://vaadin.com/contribute">vaadin.com/contribute - Contribution quide</a></li>
            <li><a href="https://github.com/vaadin/framework/issues">github.com/vaadin/framework - Github repository</a></li>
        </ul>

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