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// Copyright (c) 2012 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('print_preview', function() {
'use strict';
/**
* Object used to get and persist the print preview application state.
* @constructor
*/
function AppState() {
/**
* Internal representation of application state.
* @type {Object.<string: Object>}
* @private
*/
this.state_ = {};
this.state_[AppState.Field.VERSION] = AppState.VERSION_;
this.state_[AppState.Field.IS_GCP_PROMO_DISMISSED] = true;
/**
* Whether the app state has been initialized. The app state will ignore all
* writes until it has been initialized.
* @type {boolean}
* @private
*/
this.isInitialized_ = false;
};
/**
* Enumeration of field names for serialized app state.
* @enum {string}
*/
AppState.Field = {
VERSION: 'version',
SELECTED_DESTINATION_ID: 'selectedDestinationId',
SELECTED_DESTINATION_ORIGIN: 'selectedDestinationOrigin',
SELECTED_DESTINATION_CAPABILITIES: 'selectedDestinationCapabilities',
SELECTED_DESTINATION_NAME: 'selectedDestinationName',
IS_SELECTED_DESTINATION_LOCAL: 'isSelectedDestinationLocal', // Deprecated
IS_GCP_PROMO_DISMISSED: 'isGcpPromoDismissed',
MARGINS_TYPE: 'marginsType',
CUSTOM_MARGINS: 'customMargins',
IS_COLOR_ENABLED: 'isColorEnabled',
IS_DUPLEX_ENABLED: 'isDuplexEnabled',
IS_HEADER_FOOTER_ENABLED: 'isHeaderFooterEnabled',
IS_LANDSCAPE_ENABLED: 'isLandscapeEnabled',
IS_COLLATE_ENABLED: 'isCollateEnabled',
IS_CSS_BACKGROUND_ENABLED: 'isCssBackgroundEnabled'
};
/**
* Current version of the app state. This value helps to understand how to
* parse earlier versions of the app state.
* @type {number}
* @const
* @private
*/
AppState.VERSION_ = 2;
/**
* Name of C++ layer function to persist app state.
* @type {string}
* @const
* @private
*/
AppState.NATIVE_FUNCTION_NAME_ = 'saveAppState';
AppState.prototype = {
/** @return {?string} ID of the selected destination. */
get selectedDestinationId() {
return this.state_[AppState.Field.SELECTED_DESTINATION_ID];
},
/** @return {?string} Origin of the selected destination. */
get selectedDestinationOrigin() {
return this.state_[AppState.Field.SELECTED_DESTINATION_ORIGIN];
},
/** @return {?print_preview.Cdd} CDD of the selected destination. */
get selectedDestinationCapabilities() {
return this.state_[AppState.Field.SELECTED_DESTINATION_CAPBILITIES];
},
/** @return {?string} Name of the selected destination. */
get selectedDestinationName() {
return this.state_[AppState.Field.SELECTED_DESTINATION_NAME];
},
/** @return {boolean} Whether the GCP promotion has been dismissed. */
get isGcpPromoDismissed() {
return this.state_[AppState.Field.IS_GCP_PROMO_DISMISSED];
},
/**
* @param {!print_preview.AppState.Field} field App state field to check if
* set.
* @return {boolean} Whether a field has been set in the app state.
*/
hasField: function(field) {
return this.state_.hasOwnProperty(field);
},
/**
* @param {!print_preview.AppState.Field} field App state field to get.
* @return {Object} Value of the app state field.
*/
getField: function(field) {
if (field == AppState.Field.CUSTOM_MARGINS) {
return this.state_[field] ?
print_preview.Margins.parse(this.state_[field]) : null;
} else {
return this.state_[field];
}
},
/**
* Initializes the app state from a serialized string returned by the native
* layer.
* @param {?string} serializedAppStateStr Serialized string representation
* of the app state.
*/
init: function(serializedAppStateStr) {
if (serializedAppStateStr) {
var state = JSON.parse(serializedAppStateStr);
if (state[AppState.Field.VERSION] == AppState.VERSION_) {
if (state.hasOwnProperty(
AppState.Field.IS_SELECTED_DESTINATION_LOCAL)) {
state[AppState.Field.SELECTED_DESTINATION_ORIGIN] =
state[AppState.Field.IS_SELECTED_DESTINATION_LOCAL] ?
print_preview.Destination.Origin.LOCAL :
print_preview.Destination.Origin.COOKIES;
delete state[AppState.Field.IS_SELECTED_DESTINATION_LOCAL];
}
this.state_ = state;
}
} else {
// Set some state defaults.
this.state_[AppState.Field.IS_GCP_PROMO_DISMISSED] = false;
}
},
/**
* Sets to initialized state. Now object will accept persist requests.
*/
setInitialized: function() {
this.isInitialized_ = true;
},
/**
* Persists the given value for the given field.
* @param {!print_preview.AppState.Field} field Field to persist.
* @param {Object} value Value of field to persist.
*/
persistField: function(field, value) {
if (!this.isInitialized_)
return;
if (field == AppState.Field.CUSTOM_MARGINS) {
this.state_[field] = value ? value.serialize() : null;
} else {
this.state_[field] = value;
}
this.persist_();
},
/**
* Persists the selected destination.
* @param {!print_preview.Destination} dest Destination to persist.
*/
persistSelectedDestination: function(dest) {
if (!this.isInitialized_)
return;
this.state_[AppState.Field.SELECTED_DESTINATION_ID] = dest.id;
this.state_[AppState.Field.SELECTED_DESTINATION_ORIGIN] = dest.origin;
this.state_[AppState.Field.SELECTED_DESTINATION_CAPBILITIES] =
dest.capabilities;
this.state_[AppState.Field.SELECTED_DESTINATION_NAME] = dest.displayName;
this.persist_();
},
/**
* Persists whether the GCP promotion has been dismissed.
* @param {boolean} isGcpPromoDismissed Whether the GCP promotion has been
* dismissed.
*/
persistIsGcpPromoDismissed: function(isGcpPromoDismissed) {
if (!this.isInitialized_)
return;
this.state_[AppState.Field.IS_GCP_PROMO_DISMISSED] = isGcpPromoDismissed;
this.persist_();
},
/**
* Calls into the native layer to persist the application state.
* @private
*/
persist_: function() {
chrome.send(AppState.NATIVE_FUNCTION_NAME_,
[JSON.stringify(this.state_)]);
}
};
return {
AppState: AppState
};
});
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