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| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <script> |
| 5 var cs = chrome.experimental.contentSettings; |
| 6 var pref = cs.misc.enableReferrers; |
| 7 |
| 8 /** |
| 9 * Returns whether the |levelOfControl| means that the extension can change the |
| 10 * preference value. |
| 11 * |
| 12 * @param levelOfControl{string} |
| 13 */ |
| 14 function settingIsControllable(levelOfControl) { |
| 15 return (levelOfControl == "ControllableByThisExtension" || |
| 16 levelOfControl == "ControlledByThisExtension"); |
| 17 } |
| 18 |
| 19 /** |
| 20 * Updates the UI to reflect the state of the preference. |
| 21 * |
| 22 * @param settings{object} A settings object, as returned from |get()| or the |
| 23 * |onchange| event. |
| 24 */ |
| 25 function updateUI(settings) { |
| 26 var disableUI = !settingIsControllable(settings.levelOfControl); |
| 27 document.getElementById("regularValue").disabled = disableUI; |
| 28 document.getElementById("useSeparateIncognitoSettings").disabled = disableUI; |
| 29 if (settings.hasOwnProperty('incognitoSpecific')) { |
| 30 var hasIncognitoValue = settings.incognitoSpecific; |
| 31 document.getElementById("useSeparateIncognitoSettings").checked = |
| 32 hasIncognitoValue; |
| 33 document.getElementById("incognitoValue").disabled = |
| 34 disableUI || !hasIncognitoValue; |
| 35 document.getElementById("incognitoValue").checked = settings.value; |
| 36 } else { |
| 37 document.getElementById("regularValue").checked = settings.value; |
| 38 } |
| 39 } |
| 40 |
| 41 /** |
| 42 * Wrapper for |updateUI| which is used as callback for the |get()| method and |
| 43 * which logs the result. |
| 44 * If there was an error getting the preference, does nothing. |
| 45 * |
| 46 * @param settings{object} A settings object, as returned from |get()|. |
| 47 */ |
| 48 function updateUIFromGet(settings) { |
| 49 if (settings) { |
| 50 console.log('pref.get result:' + JSON.stringify(settings)); |
| 51 updateUI(settings); |
| 52 } |
| 53 } |
| 54 |
| 55 /** |
| 56 * Wrapper for |updateUI| which is used as handler for the |onchange| event |
| 57 * and which logs the result. |
| 58 * |
| 59 * @param settings{object} A settings object, as returned from the |onchange| |
| 60 * event. |
| 61 */ |
| 62 function updateUIFromOnChange(settings) { |
| 63 console.log('pref.onChange event:' + JSON.stringify(settings)); |
| 64 updateUI(settings); |
| 65 } |
| 66 |
| 67 /* |
| 68 * Initializes the UI. |
| 69 */ |
| 70 function init() { |
| 71 chrome.extension.isAllowedIncognitoAccess(function(allowed) { |
| 72 if (allowed) { |
| 73 pref.get({'incognito': true}, updateUIFromGet); |
| 74 document.getElementById("incognito").style.display = "block"; |
| 75 document.getElementById("incognito-forbidden").style.display = "none"; |
| 76 } |
| 77 }); |
| 78 pref.get({}, updateUIFromGet); |
| 79 pref.onChange.addListener(updateUIFromOnChange); |
| 80 } |
| 81 |
| 82 /** |
| 83 * Called from the UI to change the preference value. |
| 84 * |
| 85 * @param enabled{boolean} The new preference value. |
| 86 * @param incognito{boolean} Whether the value is specific to incognito mode. |
| 87 */ |
| 88 function setPrefValue(enabled, incognito) { |
| 89 pref.set({'value':enabled, 'incognito': incognito}); |
| 90 } |
| 91 |
| 92 /** |
| 93 * Called from the UI to change whether to use separate settings for |
| 94 * incognito mode. |
| 95 * |
| 96 * @param value{boolean} whether to use separate settings for |
| 97 * incognito mode. |
| 98 */ |
| 99 function setUseSeparateIncognitoSettings(value) { |
| 100 if (!value) { |
| 101 pref.clear({'incognito': true}); |
| 102 } else { |
| 103 // Explicitly set the value for incognito mode. |
| 104 pref.get({'incognito': true}, function(settings) { |
| 105 pref.set({'incognito': true, 'value': settings.value}); |
| 106 }); |
| 107 } |
| 108 document.getElementById("incognitoValue").disabled = !value; |
| 109 } |
| 110 |
| 111 </script> |
| 112 </head> |
| 113 <body onload="init()"> |
| 114 |
| 115 <div style="width: 300px"> |
| 116 <input type="checkbox" onclick="setPrefValue(this.checked)" id="regularValue" />
Enable referrers |
| 117 |
| 118 <div id="incognito" style="display:none"> |
| 119 <input type="checkbox" onclick="setUseSeparateIncognitoSettings(this.checked)" i
d="useSeparateIncognitoSettings" /> Use separate setting for incognito mode: |
| 120 <br> |
| 121 <input type="checkbox" onclick="setPrefValue(this.checked, true)" id="incognitoV
alue" disabled="disabled"/> Enable referrers in incognito sessions |
| 122 </div> |
| 123 <div id="incognito-forbidden"> |
| 124 Select "Allow in incognito" to access incognito preferences |
| 125 </div> |
| 126 </div> |
| 127 |
| 128 </body> |
| 129 </html> |
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Chromium Code Reviews
Issue 6793042:
Add sample extension for preference access. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src