Command Buttons & Monitors

commands.htm (hint: right click, save as)

<!--
  Test/Development/Documentation page; install as plugin to test
-->

<style>
h3 {
  margin-top: 40px;
  margin-bottom: 20px;
}
</style>

<div class="panel panel-primary">
  <div class="panel-heading">Commands &amp; Monitors</div>
  <div class="panel-body">

  <p>Command execution is only allowed for an authorized session. The command API will
    output "Unauthorized" and a Login button as necessary. The login state is also
    available in the global variable <code>loggedin</code>. To send the user to the
    login page and return to the current page after login, call <code>login()</code>:</p>

  <p>
    <button type="button" class="btn btn-default action-login" onclick="login()">Login</button>
    <button type="button" class="btn btn-default action-logout" onclick="logout()">Logout</button>
  </p>

  <script>
    $('.action-login').prop('disabled', loggedin);
    $('.action-logout').prop('disabled', !loggedin);
  </script>


  <h3>Command Execution on Load</h3>

  <p>To execute a command automatically on page load, simply add the <code>monitor</code> class
    to an output element, set <code>data-updcmd</code> to the command to be executed and
    <code>data-updcnt</code> to 1:</p>

  <pre class="monitor" data-updcmd="boot status" data-updcnt="1">Fetching boot status…</pre>

  <p>Output elements typically are <code>samp</code> or <code>pre</code>, as commands
    normally output formatted plain text, but any element can be used. <code>samp</code>
    by default compresses white space and has no visible area, while <code>pre</code>
    is visible and preserves all spacing.</p>

  <p><code>updcnt</code> will count down to zero and stop, or run indefinitely if started
    below zero. The execution interval can be given in <code>data-updint</code> (in seconds).
    You can set the data attributes any time using jQuery, all monitors are checked and
    updated by the framework once per second.</p>


  <h3>Command Execution on Events</h3>

  <p>To automatically trigger a monitor update on OVMS events, additionally set the
    <code>data-events</code> attribute to a regular expression matching the event(s) of
    interest. This example monitor lists the active network channels and automatically
    updates on all server connection events:</p>

  <p><pre class="monitor"
    data-events="server.*(connect|open|close|stop)"
    data-updcmd="network list"
    data-updcnt="1"></pre></p>

  <p>
    Try:
    <a class="btn btn-default" onclick="window.open('/', '_blank', 'width=400,height=500')">Open new window</a>
    <a class="btn btn-default" href="#" data-cmd="server v2 stop">Stop V2 server</a>
    <a class="btn btn-default" href="#" data-cmd="server v2 start">Start V2 server</a>
    <a class="btn btn-default" href="#" data-cmd="event raise server.fake.open">Send fake event</a>
  </p>


  <h3>Command Buttons</h3>

  <p>A bootstrap button has the base class <code>btn</code>. Add the command to execute
    as attribute <code>data-cmd</code> and optionally the output element as
    <code>data-target</code> and you're done.</p>

  <div class="row">

    <div class="col-sm-6">
      <button type="button" class="btn btn-default" data-target="#out1" data-cmd="wifi status">
        Wifi Status → <code>&lt;samp&gt;</code>
      </button>
      <samp id="out1" />
    </div>

    <div class="col-sm-6">
      <button type="button" class="btn btn-default" data-target="#out2" data-cmd="wifi status">
        Wifi Status → <code>&lt;pre&gt;</code>
      </button>
      <pre id="out2" />
    </div>

  </div>

  <p>Add class <code>samp-inline</code> or wrap in a <code>ul.list-inline</code> to place
    the output element on the same line with the button. Prefix the target with a "+" to
    append to it:</p>

  <p>
    External 12V power
    <button type="button" class="btn btn-info" data-target="+#out3" data-cmd="power ext12v on">on</button>
    <button type="button" class="btn btn-info" data-target="+#out3" data-cmd="power ext12v off">off</button>
    <samp class="samp-inline" id="out3" />
  </p>


  <h3>Combining Buttons &amp; Monitors</h3>

  <p>By combination of a button and a monitor, you can let the button start a repeated
    execution of a command: set <code>data-watchcnt</code> on the button to the number of
    repetitions (default 0) and <code>data-watchint</code> to the interval in seconds
    (default 2).</p>

  <p>
    <button type="button" class="btn btn-default" data-target="#out4"
      data-cmd="power simcom on" data-watchcnt="-1" data-watchint="3">
      Power on modem &amp; get status updates every 3 seconds
    </button>
    <pre class="monitor" id="out4" data-updcmd="simcom status" />
  </p>

  <p>Note: to stop a monitor, set <code>data-updcnt</code> to 0:
    <button type="button" class="btn btn-default" onclick="$('#out4').data('updcnt', 0)">
      Stop updates
    </button></p>


  <h3>Execute Javascript</h3>

  <p>To execute Javascript code directly (i.e. without calling <code>script eval</code>),
    simply exchange the <code>data-cmd / data-updcmd</code> attribute by
    <code>data-js / data-updjs</code>. Example:</p>

  <p>
    <button type="button" class="btn btn-default" data-target="#out5"
      data-js="JSON.print(OvmsConfig.GetValues('vehicle'))">
      Show vehicle config
    </button>
    <pre id="out5" />
  </p>

  </div>
</div>


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