java-cef/java/tests/detailed/handler/binding_test2.html at 612992f37cf5b8f70993e88df0f2e96130e32fae · chromiumembedded/java-cef · GitHub

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<html>
<head>
<title>Binding Test - Part 2</title>
<script language="JavaScript">

function toggleButton() {
  window.cefQuery({
    request: 'hasExtension',
    onSuccess: function(response) {
      document.getElementById('jcefOn').disabled = true;
      document.getElementById('jcefOff').disabled = false;
    },
    onFailure: function(error_code, error_message) {
      document.getElementById('jcefOn').disabled = false;
      document.getElementById('jcefOff').disabled = true;
    }
  });
}

function doPersistent() {
  document.getElementById('persist').value = '';
  window.cefQuery({
    request: 'doPersistent',
    persistent: true,
    onSuccess: function(response) {
      document.getElementById('persist').value += ' MESSAGE: [ ' + response + '];';
    },
    onFailure: function(error_code, error_message) {
      document.getElementById('persist').value += ' FINISHED: ' + error_code + ' ' + error_message;
    }
  });
}

function doBinary() {
  document.getElementById('binary').value = 'ORIGINAL: [';
  const binaryData = new Uint8Array([10, 20, 30, 40, 50]);
  for (let i = 0; i < binaryData.length; i++) {
    document.getElementById('binary').value += ' ' + binaryData.at(i);
  }
  document.getElementById('binary').value += ' ];';
  window.cefQuery({
    request: binaryData.buffer,
    persistent: true,
    onSuccess: function(response) {
      document.getElementById('binary').value += ' RESPONSE: [';
      const echoedBinaryData = new Uint8Array(response);
      for (let i = 0; i < echoedBinaryData.length; i++) {
        document.getElementById('binary').value += ' ' + echoedBinaryData.at(i);
      }
      document.getElementById('binary').value += ' ];';
    },
    onFailure: function(error_code, error_message) {
      document.getElementById('binary').value += ' FINISHED: ' + error_code + ' ' + error_message;
    }
  });
}

function execute(cmd) {
  window.cefQuery({
    request: cmd,
    onSuccess: function(response) {
      location.reload();
    },
    onFailure: function(error_code, error_message) {
      document.getElementById('result').value = 'Error: '+error_message;
    }
  });
}

function getJavaVersion() {
  if ("myQuery" in window) {
    window.myQuery({
      request: 'jcefJava',
      onSuccess: function(response) {
        document.getElementById('result').value = 'Java Version: '+response;
      },
      onFailure: function(error_code, error_message) {
        document.getElementById('result').value = 'Error: '+error_message;
      }
    });
  } else {
    document.getElementById('result').value = 'Error: myQuery isn\'t enabled';
  }
}

</script>
<head>

<body bgcolor="white" onload="toggleButton()">

<form>
<h1>JavaScript Binding Test - Part 2</h1>
<p>While this page was loaded, the JavaScript function
<pre>window.cefRequest(request: 'hasExtension')</pre>
was executed for enabling/disabling the buttons below.
<br/>&nbsp;<br/>
If you press "Enable myQuery", the JavaScript function
<pre>window.cefRequest(request: 'enableExt')</pre>
is executed. This causes Java to create a second instance of
<pre>CefMessageRouter</pre>
In this case the name of the JavaScript query function is set to "myQuery" and
<br/>a handler for the request 'jcefJava' is registered. Pressing the "Test"
<br/>button will execute the JavaScript code
<pre>window.myRequest(request: 'jcefJava')</pre>
which returns your current Java version on success or an error message in case
<br/>of an error.
</p>
<p><b>Please note:</b> If you leave this page (myQuery enabled) and you return
<br/>after a while - without closing the browser - the JavaScript binding is
<br/>still enabled.</p>
Second message router:
<input type="button" id="jcefOn" value="Enable myQuery" onclick="execute('enableExt');" />
<input type="button" id="jcefOff" value="Disable myQuery" onclick="execute('disableExt');" />
<br/><input type="button" onclick="getJavaVersion();" value="Test"/>
<input type="text" id="result" size="80" readonly />
<br/><p>This button tests persistent queries. When the button is pressed, it clears the output,
and when it receives a success message, it appends it to the output. When it finally receives
a failure message, it appends the error_code followed by the error_message.</p>
<input type="button" onclick="doPersistent();" value="Persist"/>
<input type="text" id="persist" size="80" readonly />
<br/><p>This button tests binary queries. When the button is pressed, it clears the output and
replaces it with a representation of the binary data sent in the query. When it receives a
success message, it appends a similar representation of the binary data received (which has
been reversed by Java). When it finally receives a failure message, it appends the error_code
followed by the error_message.</p>
<input type="button" onclick="doBinary();" value="Binary"/>
<input type="text" id="binary" size="80" readonly />
</form>
</body>
</html>