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// Copyright 2013 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('help', function() {
/**
* Encapsulated handling of the channel change overlay.
*/
function ChannelChangePage() {}
cr.addSingletonGetter(ChannelChangePage);
ChannelChangePage.prototype = {
__proto__: help.HelpBasePage.prototype,
/**
* Name of the channel the device is currently on.
* @private
*/
currentChannel_: null,
/**
* Name of the channel the device is supposed to be on.
* @private
*/
targetChannel_: null,
/**
* True iff the device is enterprise-managed.
* @private
*/
isEnterpriseManaged_: undefined,
/**
* List of the channels names, from the least stable to the most stable.
* @private
*/
channelList_: ['dev-channel', 'beta-channel', 'stable-channel'],
/**
* List of the possible ui states.
* @private
*/
uiClassTable_: ['selected-channel-requires-powerwash',
'selected-channel-requires-delayed-update',
'selected-channel-good',
'selected-channel-unstable'],
/**
* Perform initial setup.
*/
initialize: function() {
help.HelpBasePage.prototype.initialize.call(this, 'channel-change-page');
var self = this;
$('channel-change-page-cancel-button').onclick = function() {
help.HelpPage.cancelOverlay();
};
var options = this.getAllChannelOptions_();
for (var i = 0; i < options.length; i++) {
var option = options[i];
option.onclick = function() {
self.updateUI_(this.value);
};
}
$('channel-change-page-powerwash-button').onclick = function() {
self.setChannel_(self.getSelectedOption_(), true);
help.HelpPage.cancelOverlay();
};
$('channel-change-page-change-button').onclick = function() {
self.setChannel_(self.getSelectedOption_(), false);
help.HelpPage.cancelOverlay();
};
},
onBeforeShow: function() {
help.HelpBasePage.prototype.onBeforeShow.call(this);
if (this.targetChannel_ != null)
this.selectOption_(this.targetChannel_);
else if (this.currentChannel_ != null)
this.selectOption_(this.currentChannel_);
var options = this.getAllChannelOptions_();
for (var i = 0; i < options.length; i++) {
var option = options[i];
if (option.checked)
option.focus();
}
},
/**
* Returns the list of all radio buttons responsible for channel selection.
* @return {Array.<HTMLInputElement>} Array of radio buttons
* @private
*/
getAllChannelOptions_: function() {
return $('channel-change-page').querySelectorAll('input[type="radio"]');
},
/**
* Returns value of the selected option.
* @return {string} Selected channel name or null, if neither
* option is selected.
* @private
*/
getSelectedOption_: function() {
var options = this.getAllChannelOptions_();
for (var i = 0; i < options.length; i++) {
var option = options[i];
if (option.checked)
return option.value;
}
return null;
},
/**
* Selects option for a given channel.
* @param {string} channel Name of channel option that should be selected.
* @private
*/
selectOption_: function(channel) {
var options = this.getAllChannelOptions_();
for (var i = 0; i < options.length; i++) {
var option = options[i];
if (option.value == channel) {
option.checked = true;
}
}
this.updateUI_(channel);
},
/**
* Updates UI according to selected channel.
* @param {string} selectedChannel Selected channel
* @private
*/
updateUI_: function(selectedChannel) {
var currentStability = this.channelList_.indexOf(this.currentChannel_);
var newStability = this.channelList_.indexOf(selectedChannel);
var newOverlayClass = null;
if (selectedChannel == this.currentChannel_) {
if (this.currentChannel_ != this.targetChannel_) {
// Allow user to switch back to the current channel.
newOverlayClass = 'selected-channel-good';
}
} else if (selectedChannel != this.targetChannel_) {
// Selected channel isn't equal to the current and target channel.
if (newStability > currentStability) {
// More stable channel is selected. For customer devices
// notify user about powerwash.
if (this.isEnterpriseManaged_)
newOverlayClass = 'selected-channel-requires-delayed-update';
else
newOverlayClass = 'selected-channel-requires-powerwash';
} else if (selectedChannel == 'dev-channel') {
// Warn user about unstable channel.
newOverlayClass = 'selected-channel-unstable';
} else {
// Switching to the less stable channel.
newOverlayClass = 'selected-channel-good';
}
}
// Switch to the new UI state.
for (var i = 0; i < this.uiClassTable_.length; i++)
$('channel-change-page').classList.remove(this.uiClassTable_[i]);
if (newOverlayClass)
$('channel-change-page').classList.add(newOverlayClass);
},
/**
* Sets the device target channel.
* @param {string} channel The name of the target channel
* @param {boolean} isPowerwashAllowed True iff powerwash is allowed
* @private
*/
setChannel_: function(channel, isPowerwashAllowed) {
this.targetChannel_ = channel;
this.updateUI_(channel);
help.HelpPage.setChannel(channel, isPowerwashAllowed);
},
/**
* Updates page UI according to device owhership policy.
* @param {boolean} isEnterpriseManaged True if the device is
* enterprise managed
* @private
*/
updateIsEnterpriseManaged_: function(isEnterpriseManaged) {
this.isEnterpriseManaged_ = isEnterpriseManaged;
help.HelpPage.updateChannelChangePageContainerVisibility();
},
/**
* Updates name of the current channel, i.e. the name of the
* channel the device is currently on.
* @param {string} channel The name of the current channel
* @private
*/
updateCurrentChannel_: function(channel) {
if (this.channelList_.indexOf(channel) < 0)
return;
this.currentChannel_ = channel;
this.selectOption_(channel);
help.HelpPage.updateChannelChangePageContainerVisibility();
},
/**
* Updates name of the target channel, i.e. the name of the
* channel the device is supposed to be in case of a pending
* channel change.
* @param {string} channel The name of the target channel
* @private
*/
updateTargetChannel_: function(channel) {
if (this.channelList_.indexOf(channel) < 0)
return;
this.targetChannel_ = channel;
help.HelpPage.updateChannelChangePageContainerVisibility();
},
/**
* @return {boolean} True if the page is ready and can be
* displayed, false otherwise
* @private
*/
isPageReady_: function() {
if (typeof this.isEnterpriseManaged_ == 'undefined')
return false;
if (!this.currentChannel_ || !this.targetChannel_)
return false;
return true;
},
};
ChannelChangePage.updateIsEnterpriseManaged = function(isEnterpriseManaged) {
ChannelChangePage.getInstance().updateIsEnterpriseManaged_(
isEnterpriseManaged);
};
ChannelChangePage.updateCurrentChannel = function(channel) {
ChannelChangePage.getInstance().updateCurrentChannel_(channel);
};
ChannelChangePage.updateTargetChannel = function(channel) {
ChannelChangePage.getInstance().updateTargetChannel_(channel);
};
ChannelChangePage.isPageReady = function() {
return ChannelChangePage.getInstance().isPageReady_();
};
// Export
return {
ChannelChangePage: ChannelChangePage
};
});
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