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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';
/**
* Creates a PageSettings object. This object encapsulates all settings and
* logic related to page selection.
* @param {!print_preview.ticket_items.PageRange} pageRangeTicketItem Used to
* read and write page range settings.
* @constructor
* @extends {print_preview.Component}
*/
function PageSettings(pageRangeTicketItem) {
print_preview.Component.call(this);
/**
* Used to read and write page range settings.
* @type {!print_preview.ticket_items.PageRange}
* @private
*/
this.pageRangeTicketItem_ = pageRangeTicketItem;
/**
* Timeout used to delay processing of the custom page range input.
* @type {?number}
* @private
*/
this.customInputTimeout_ = null;
/**
* Custom page range input.
* @type {HTMLInputElement}
* @private
*/
this.customInput_ = null;
/**
* Custom page range radio button.
* @type {HTMLInputElement}
* @private
*/
this.customRadio_ = null;
/**
* All page rage radio button.
* @type {HTMLInputElement}
* @private
*/
this.allRadio_ = null;
/**
* Container of a hint to show when the custom page range is invalid.
* @type {HTMLElement}
* @private
*/
this.customHintEl_ = null;
};
/**
* CSS classes used by the page settings.
* @enum {string}
* @private
*/
PageSettings.Classes_ = {
ALL_RADIO: 'page-settings-all-radio',
CUSTOM_HINT: 'page-settings-custom-hint',
CUSTOM_INPUT: 'page-settings-custom-input',
CUSTOM_RADIO: 'page-settings-custom-radio'
};
/**
* Delay in milliseconds before processing custom page range input.
* @type {number}
* @private
*/
PageSettings.CUSTOM_INPUT_DELAY_ = 500;
PageSettings.prototype = {
__proto__: print_preview.Component.prototype,
set isEnabled(isEnabled) {
this.customInput_.disabled = !isEnabled;
this.allRadio_.disabled = !isEnabled;
this.customRadio_.disabled = !isEnabled;
},
/** @override */
enterDocument: function() {
print_preview.Component.prototype.enterDocument.call(this);
this.tracker.add(
this.allRadio_, 'click', this.onAllRadioClick_.bind(this));
this.tracker.add(
this.customRadio_, 'click', this.onCustomRadioClick_.bind(this));
this.tracker.add(
this.customInput_, 'blur', this.onCustomInputBlur_.bind(this));
this.tracker.add(
this.customInput_, 'focus', this.onCustomInputFocus_.bind(this));
this.tracker.add(
this.customInput_, 'keyup', this.onCustomInputKeyUp_.bind(this));
this.tracker.add(
this.pageRangeTicketItem_,
print_preview.ticket_items.TicketItem.EventType.CHANGE,
this.onPageRangeTicketItemChange_.bind(this));
},
/** @override */
exitDocument: function() {
print_preview.Component.prototype.exitDocument.call(this);
this.customInput_ = null;
this.customRadio_ = null;
this.allRadio_ = null;
this.customHintEl_ = null;
},
/** @override */
decorateInternal: function() {
this.customInput_ = this.getElement().getElementsByClassName(
PageSettings.Classes_.CUSTOM_INPUT)[0];
this.allRadio_ = this.getElement().getElementsByClassName(
PageSettings.Classes_.ALL_RADIO)[0];
this.customRadio_ = this.getElement().getElementsByClassName(
PageSettings.Classes_.CUSTOM_RADIO)[0];
this.customHintEl_ = this.getElement().getElementsByClassName(
PageSettings.Classes_.CUSTOM_HINT)[0];
this.customHintEl_.textContent = localStrings.getStringF(
'pageRangeInstruction',
localStrings.getString('examplePageRangeText'));
},
/**
* @param {boolean} Whether the custom hint is visible.
* @private
*/
setInvalidStateVisible_: function(isVisible) {
if (isVisible) {
this.customInput_.classList.add('invalid');
this.customHintEl_.setAttribute('aria-hidden', 'false');
fadeInElement(this.customHintEl_);
} else {
this.customInput_.classList.remove('invalid');
fadeOutElement(this.customHintEl_);
this.customHintEl_.setAttribute('aria-hidden', 'true');
}
},
/**
* Called when the all radio button is clicked. Updates the print ticket.
* @private
*/
onAllRadioClick_: function() {
this.pageRangeTicketItem_.updateValue(null);
},
/**
* Called when the custom radio button is clicked. Updates the print ticket.
* @private
*/
onCustomRadioClick_: function() {
this.customInput_.focus();
},
/**
* Called when the custom input is blurred. Enables the all radio button if
* the custom input is empty.
* @private
*/
onCustomInputBlur_: function() {
if (this.customInput_.value == '') {
this.allRadio_.checked = true;
}
},
/**
* Called when the custom input is focused.
* @private
*/
onCustomInputFocus_: function() {
this.customRadio_.checked = true;
this.pageRangeTicketItem_.updateValue(this.customInput_.value);
},
/**
* Called when a key is pressed on the custom input.
* @param {Event} event Contains the key that was pressed.
* @private
*/
onCustomInputKeyUp_: function(event) {
if (this.customInputTimeout_) {
clearTimeout(this.customInputTimeout_);
}
if (event.keyIdentifier == 'Enter') {
this.pageRangeTicketItem_.updateValue(this.customInput_.value);
} else {
this.customRadio_.checked = true;
this.customInputTimeout_ = setTimeout(
this.onCustomInputTimeout_.bind(this),
PageSettings.CUSTOM_INPUT_DELAY_);
}
},
/**
* Called after a delay following a key press in the custom input.
* @private
*/
onCustomInputTimeout_: function() {
this.customInputTimeout_ = null;
if (this.customRadio_.checked) {
this.pageRangeTicketItem_.updateValue(this.customInput_.value);
}
},
/**
* Called when the print ticket changes. Updates the state of the component.
* @private
*/
onPageRangeTicketItemChange_: function() {
if (this.pageRangeTicketItem_.isCapabilityAvailable()) {
var pageRangeStr = this.pageRangeTicketItem_.getValue();
if (pageRangeStr || this.customRadio_.checked) {
if (!document.hasFocus() ||
document.activeElement != this.customInput_) {
this.customInput_.value = pageRangeStr;
}
this.customRadio_.checked = true;
this.setInvalidStateVisible_(!this.pageRangeTicketItem_.isValid());
} else {
this.allRadio_.checked = true;
this.setInvalidStateVisible_(false);
}
fadeInOption(this.getElement());
} else {
fadeOutOption(this.getElement());
}
}
};
// Export
return {
PageSettings: PageSettings
};
});
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