src/tests/cefclient/resources/preferences.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Preferences Test</title>

  <!-- When using the mode "code" it's important to specify charset utf-8 -->
  <meta http-equiv="Content-Type" content="text/html;charset=utf-8">

  <!-- jsoneditor project from https://github.com/josdejong/jsoneditor/
       script hosting from http://cdnjs.com/libraries/jsoneditor -->
  <link href="https://cdnjs.cloudflare.com/ajax/libs/jsoneditor/4.2.1/jsoneditor.min.css" rel="stylesheet" type="text/css">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jsoneditor/4.2.1/jsoneditor.min.js"></script>

  <script>
    function setup() {
      if (location.hostname == 'tests' || location.hostname == 'localhost')
        return;

      alert('This page can only be run from tests or localhost.');

      // Disable all elements.
      var elements = document.getElementById("form").elements;
      for (var i = 0, element; element = elements[i++]; ) {
        element.disabled = true;
      }
    }
  </script>
</head>
<body bgcolor="white" onload="setup()">
  <!-- Header -->
  <div id="simple_links">
    [ <b>Simple</b> ]
    [ <a href="#" onClick="toggleView(); return false;">Advanced</a> ]
  </div>
  <div id="advanced_links" style="display:none">
    [ <a href="#" onClick="toggleView(); return false;">Simple</a> ]
    [ <b>Advanced</b> ]
  </div>

  <form id="form">

  <!-- Simple view -->
  <div id="simple">
    <p>
      This page supports display and configuration of a few sample preferences.
      <table width="100%" style="border: 1px solid #97B0F8">
        <tr>
          <td>
            <input type="checkbox" id="enable_spellchecking"/> Enable spell checking
          </td>
        </tr>
        <tr>
          <td>
            <br/>
            <input type="checkbox" id="allow_running_insecure_content"/> Allow running insecure content
          </td>
        </tr>
        <tr>
          <td>
            <br/>
            Proxy type:
            <select id="proxy_type" onChange="proxyTypeChange()">
              <option value="direct">Direct</option>
              <option value="auto_detect">Auto-Detect</option>
              <option value="pac_script">PAC Script</option>
              <option value="fixed_servers">Fixed Servers</option>
              <option value="system">System</option>
            </select>
            <input id="proxy_value" type="text" size="80" disabled/>
          </td>
        </tr>
      </table>
      <table border="0" width="100%">
        <tr>
          <td align="left">
            <input type="button" value="Refresh" onClick="refreshSimple()"/>
          </td>
          <td align="right">
            <input type="button" value="Apply Changes" onClick="applySimpleChanges()"/>
          </td>
        </tr>
      </table>
    </p>
  </div>

  <!-- Advanced view -->
  <div id="advanced" style="display:none">
    <p>
      This page displays all preferences organized in a tree structure. Arbitrary changes are
      allowed, however <b>changing preferences in arbitrary ways may result in crashes</b>. If you
      experience a crash while setting preferences then run a Debug build of CEF/Chromium and watch
      for DCHECKs in the Chromium code to figure out what went wrong.
    </p>
    <div id="jsoneditor" style="width: 100%; height: 100%;"></div>
    <table border="0" width="100%">
      <tr>
        <td align="left">
          <input type="button" value="Refresh" onClick="refreshEditor()"/>
          <input type="checkbox" id="hide_defaults"/> Show modified preferences only
        </td>
        <td align="right">
          <input type="button" value="Apply Changes" onClick="applyEditorChanges()"/>
        </td>
      </tr>
    </table>
  </div>

  </form>

  <script>
    // Reference to the JSONEditor.
    var editor = null;

    // Preferences state information.
    var preferences_state = null;

    // Toggle between the simple and advanced views.
    function toggleView() {
      var simple = document.getElementById("simple");
      var advanced = document.getElementById("advanced");
      var simple_links = document.getElementById("simple_links");
      var advanced_links = document.getElementById("advanced_links");

      if (simple.style.display == "none") {
        // Show the simple view.
        simple.style.display = "";
        simple_links.style.display = "";
        advanced.style.display = "none";
        advanced_links.style.display = "none";

        // Refresh the simple view contents.
        refreshSimple();
      } else {
        // Show the advanced view.
        simple.style.display = "none";
        simple_links.style.display = "none";
        advanced.style.display = "";
        advanced_links.style.display = "";

        if (editor == null) {
          // Create the editor.
          editor = new JSONEditor(document.getElementById("jsoneditor"));
        }

        // Refesh the editor contents.
        refreshEditor();
      }
    }

    // Send a request to C++.
    function sendRequest(request, onSuccessCallback) {
      // Results in a call to the OnQuery method in preferences_test.cpp.
      window.cefQuery({
        request: JSON.stringify(request),
        onSuccess: onSuccessCallback,
        onFailure: function(error_code, error_message) {
          alert(error_message + ' (' + error_code + ')');
        }
      });
    }

    // Get the preferences and execute |onSuccessCallback| with the resulting
    // JSON object.
    function getPreferences(include_defaults, onSuccessCallback) {
      // Create the request object.
      var request = {};
      request.name = "preferences_get";
      request.include_defaults = include_defaults;

      // Send the request to C++.
      sendRequest(
        request,
        function(response) {
          onSuccessCallback(JSON.parse(response));
        }
      );
    }

    // Set the preferences.
    function setPreferences(preferences) {
      // Create the request object.
      var request = {};
      request.name = "preferences_set";
      request.preferences = preferences;

      // Send the request to C++.
      sendRequest(
        request,
        function(response) {
          // Show the informative response message.
          alert(response);
        }
      );
    }

    // Get the global preference state.
    function getPreferenceState() {
      // Create the request object.
      var request = {};
      request.name = "preferences_state";

      // Send the request to C++.
      sendRequest(
        request,
        function(response) {
          // Populate the global state object.
          preferences_state = JSON.parse(response);

          // Refresh the simple view contents.
          refreshSimple();
        }
      );
    }

    // Refresh the editor view contents.
    function refreshEditor() {
      include_defaults = !document.getElementById("hide_defaults").checked;
      getPreferences(include_defaults, function(response) {
        // Set the JSON in the editor.
        editor.set(response);
      });
    }

    // Apply changes from the editor view.
    function applyEditorChanges() {
      setPreferences(editor.get());
    }

    // Refresh the simple view contents.
    function refreshSimple() {
      getPreferences(true, function(response) {
        // Spellcheck settings.
        if (preferences_state.spellcheck_disabled) {
          // Cannot enable spell checking when disabled via the command-line.
          document.getElementById("enable_spellchecking").checked = false;
          document.getElementById("enable_spellchecking").disabled = true;
        } else {
          document.getElementById("enable_spellchecking").checked =
              response.browser.enable_spellchecking;
        }

        // Web content settings.
        if (preferences_state.allow_running_insecure_content) {
          // Cannot disable running insecure content when enabled via the
          // command-line.
          document.getElementById("allow_running_insecure_content").checked =
              true;
          document.getElementById("allow_running_insecure_content").disabled =
              true;
        } else {
          document.getElementById("allow_running_insecure_content").checked =
              response.webkit.webprefs.allow_running_insecure_content;
        }

        // Proxy settings.
        document.getElementById("proxy_type").value = response.proxy.mode;

        // Some proxy modes have associated values.
        if (response.proxy.mode == "pac_script")
          proxy_value = response.proxy.pac_url;
        else if (response.proxy.mode == "fixed_servers")
          proxy_value = response.proxy.server;
        else
          proxy_value = null;

        if (proxy_value != null)
          document.getElementById("proxy_value").value = proxy_value;
        document.getElementById("proxy_value").disabled = (proxy_value == null);

        if (preferences_state.proxy_configured) {
          // Cannot modify proxy settings that are configured via the command-
          // line.
          document.getElementById("proxy_type").disabled = true;
          document.getElementById("proxy_value").disabled = true;
        }
      });
    }

    // Apply changes from the simple view.
    function applySimpleChanges() {
      has_preferences = false;
      preferences = {};

      // Spellcheck settings.
      if (!preferences_state.spellcheck_disabled) {
        has_preferences = true;

        preferences.browser = {};
        preferences.browser.enable_spellchecking =
            document.getElementById("enable_spellchecking").checked;
      }

      // Web content settings.
      if (!preferences_state.allow_running_insecure_content) {
        has_preferences = true;

        preferences.webkit = {};
        preferences.webkit.webprefs = {};
        preferences.webkit.webprefs.allow_running_insecure_content =
            document.getElementById("allow_running_insecure_content").checked;
      }

      // Proxy settings.
      if (!preferences_state.proxy_configured) {
        has_preferences = true;

        preferences.proxy = {};
        preferences.proxy.mode = document.getElementById("proxy_type").value;

        // Some proxy modes have associated values.
        if (preferences.proxy.mode == "pac_script") {
          preferences.proxy.pac_script =
              document.getElementById("proxy_value").value;
        } else  if (preferences.proxy.mode == "fixed_servers") {
          preferences.proxy.server =
              document.getElementById("proxy_value").value;
        }
      }

      if (has_preferences)
        setPreferences(preferences);
    }

    // Called when the proxy type is changed.
    function proxyTypeChange() {
      proxy_type = document.getElementById("proxy_type").value;
      document.getElementById("proxy_value").value = "";

      // Only enable the value field for the proxy modes that require it.
      document.getElementById("proxy_value").disabled =
          (proxy_type != "pac_script" && proxy_type != "fixed_servers");
    }

    // Retrieve global preferences state.
    getPreferenceState();
  </script>
</body>
</html>