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ProtoXEP Buttons: A XEP about clicking things
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Kim Alvefur
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inbox/buttons.xml
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168
inbox/buttons.xml
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<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE xep SYSTEM 'xep.dtd' [
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<!ENTITY % ents SYSTEM 'xep.ent'>
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%ents;
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]>
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<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
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<xep><header>
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<title>Simple Buttons</title>
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<abstract>This specification provides a way to send simple buttons.</abstract>
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&LEGALNOTICE;
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<number>xxxx</number>
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<status>ProtoXEP</status>
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<type>Standards Track</type>
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<sig>Standards</sig>
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<dependencies>
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<spec>XMPP Core</spec>
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</dependencies>
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<supersedes/>
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<supersededby/>
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<shortname>NOT_YET_ASSIGNED</shortname>
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<author>
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<firstname>Kim</firstname>
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<surname>Alvefur</surname>
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<email>zash@zash.se</email>
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<jid>zash@zash.se</jid>
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</author>
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<revision>
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<version>0.0.2</version>
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<date>2018-09-30</date>
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<initials>ka</initials>
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<remark>Polishing preparing for submission</remark>
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</revision>
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<revision>
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<version>0.0.1</version>
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<date>2018-09-02</date>
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<initials>ka</initials>
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<remark>Initial version</remark>
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</revision>
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</header>
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<section1 anchor="intro" topic="Introduction">
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<p>Having actionable buttons in chats is apparently a fashionable thing
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now. This specification defines a simple protocol for buttons and
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responses.</p>
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</section1><section1 anchor="reqs" topic="Requirements">
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<ul>
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<li>To provide a representation of a simple button or two in a chat.</li>
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</ul>
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<section2 anchor="todo" topic="TODO">
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<ul>
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<li>Is "button" too UI-centric?
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<ul>
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<li>Could base it on the <tt><action></tt> element from ad-hoc?</li>
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</ul></li>
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<li>Styling? Maybe a few fixed styles like normal, warning, danger?</li>
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</ul>
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</section2></section1><section1 anchor="glossary" topic="Glossary">
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<p>OPTIONAL.</p>
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<dl>
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<di><dt>Button</dt>
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<dd>An actionable object that can be invoked.</dd></di>
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<di><dt>Click</dt>
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<dd>The act of invoking the actionable object.</dd></di>
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</dl>
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</section1><section1 anchor="usecases" topic="Use Cases">
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<p>A chat bot wants to provide fixed choice answers or commands.</p>
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</section1><section1 anchor="elements" topic="Elements">
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<section2 anchor="button-element" topic="Button element">
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<p>A button is represented by a <tt><button></tt> element in the
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<tt>urn:xmpp:tmp:buttons</tt>.</p>
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<example><![CDATA[<button xmlns="urn:xmpp:tmp:buttons" value="button-clicked">
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<label xml:lang="en">Click me</label>
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</button>]]></example>
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<dl>
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<di><dt>value</dt>
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<dd>Textual payload to be sent in a message <tt><body></tt> when the button is
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clicked.</dd></di>
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<di><dt><label></dt>
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<dd>Text label for the button. Can be repeated per language.</dd></di>
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</dl>
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</section2></section1><section1 anchor="protocol" topic="Protocol">
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<section2 anchor="sending-a-button" topic="Sending a button">
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<p>A message with buttons is sent by including one or more <button>
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elements with distinct value attributes. At least one <label> element
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MUST be included containing a textual description for the button.</p>
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<example><![CDATA[<message from="memberbot@example.com">
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<body xml:lang="en">Approve? (yes/no)</body>
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<button xmlns="urn:xmpp:tmp:buttons" value="yes">
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<label xml:lang="en">Yes</label>
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<label xml:lang="sv">Ja</label>
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</button>
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<button xmlns="urn:xmpp:tmp:buttons" value="no">
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<label xml:lang="en">No</label>
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<label xml:lang="sv">Nej</label>
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</button>
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</message>]]></example>
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<p>A single message MUST NOT have multiple buttons with the same <tt>@value</tt>.</p>
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</section2><section2 anchor="clicking-a-button" topic="Clicking a button">
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<p>When the user clicks a button, their client sends a plain text message
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body containing the <tt>@value</tt> as <body> text.</p>
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<example><![CDATA[<message to="memberbot@example.com">
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<body>yes</body>
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</message>]]></example>
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</section2></section1><section1 anchor="rules" topic="Business Rules">
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<p>OPTIONAL. TODO.</p>
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</section1><section1 anchor="impl" topic="Implementation Notes">
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<p>OPTIONAL. TODO.</p>
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</section1><section1 anchor="access" topic="Accessibility Considerations">
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<p>Accessibility for whom?</p>
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</section1><section1 anchor="i18n" topic="Internationalization Considerations">
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<p>Multiple instances of the <tt><label/></tt> element MAY be included for the
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purpose of providing alternate versions of the same text in different
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languages, i.e. with distinct <tt>xml:lang</tt> attributes.</p>
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</section1><section1 anchor="security" topic="Security Considerations">
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<p>Do not press the big red button marked "Danger: Do Not Push".</p>
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</section1><section1 anchor="iana" topic="IANA Considerations">
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<p>None.</p>
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</section1><section1 anchor="registrar" topic="XMPP Registrar Considerations">
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<p>Register the namespace etc.</p>
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</section1><section1 anchor="schema" topic="XML Schema">
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<p>REQUIRED for protocol specifications.</p>
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<code><![CDATA[button
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@value : string
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label+ : string]]></code>
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</section1>
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</xep>
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