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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
cr.define('options', function() {
/**
* Base class for banners that appear at the top of the settings page.
* @constructor
*/
function SettingsBannerBase() {}
cr.addSingletonGetter(SettingsBannerBase);
SettingsBannerBase.prototype = {
/**
* Whether or not the banner has already been dismissed.
*
* This is needed because of the surprising ordering of asynchronous
* JS<->native calls when the settings page is opened with specifying a
* given sub-page, e.g. chrome://settings/AutomaticSettingsReset.
*
* In such a case, AutomaticSettingsResetOverlay's didShowPage(), which
* calls our dismiss() method, would be called before the native Handlers'
* InitalizePage() methods have an effect in the JS, which includes calling
* our show() method. This would mean that the banner would be first
* dismissed, then shown. We want to prevent this.
*
* @type {boolean}
* @private
*/
hadBeenDismissed_: false,
/**
* Metric name to send when a show event occurs.
* @protected
*/
showMetricName: '',
/**
* Name of the native callback invoked when the banner is dismised.
* @protected
*/
dismissNativeCallbackName: '',
/**
* DOM element whose visibility is set when setVisibility_ is called.
* @protected
*/
visibilityDomElement: null,
/**
* Called by the native code to show the banner if needed.
* @protected
*/
show: function() {
if (!this.hadBeenDismissed_) {
chrome.send('metricsHandler:recordAction', [this.showMetricName]);
this.setVisibility_(true);
}
},
/**
* Called when the banner should be closed as a result of something taking
* place on the WebUI page, i.e. when its close button is pressed, or when
* the confirmation dialog for the profile settings reset feature is opened.
* @protected
*/
dismiss: function() {
chrome.send(this.dismissNativeCallbackName);
this.hadBeenDismissed_ = true;
this.setVisibility_(false);
},
/**
* Sets whether or not the reset profile settings banner shall be visible.
* @param {boolean} show Whether or not to show the banner.
* @private
*/
setVisibility_: function(show) {
this.visibilityDomElement.hidden = !show;
},
};
// Export
return {
SettingsBannerBase: SettingsBannerBase
};
});
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