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// Copyright (c) 2011 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 PrintHeader object. This object encapsulates all the elements
* and logic related to the top part of the left pane in print_preview.html.
* @constructor
*/
function PrintHeader() {
this.printButton_ = $('print-button');
this.cancelButton_ = $('cancel-button');
this.summary_ = $('print-summary');
this.printButton_.focus();
}
cr.addSingletonGetter(PrintHeader);
PrintHeader.prototype = {
get printButton() {
return this.printButton_;
},
get cancelButton() {
return this.cancelButton_;
},
get summary() {
return this.summary_;
},
/**
* Adding event listeners where necessary. Listeners take care of changing
* their behavior depending on the current state, no need to remove them.
*/
addEventListeners: function() {
this.cancelButton_.onclick = function() {
chrome.send('closePrintPreviewTab');
};
this.printButton_.onclick = this.onPrintButtonClicked_.bind(this);
document.addEventListener('updateSummary',
this.updateSummary_.bind(this));
document.addEventListener('updatePrintButton',
this.updatePrintButton_.bind(this));
},
/**
* Listener executing whenever |this.printButton_| is clicked.
* @private
*/
onPrintButtonClicked_: function() {
var printToPDF = getSelectedPrinterName() == PRINT_TO_PDF;
if (!printToPDF) {
this.printButton_.classList.add('loading');
this.cancelButton_.classList.add('loading');
this.summary_.innerHTML = localStrings.getString('printing');
}
requestToPrintDocument();
},
/**
* Updates the state of |this.printButton_| depending on the user selection.
* The button is enabled only when the following conditions are true.
* 1) The selected page ranges are valid.
* 2) The number of copies is valid (if applicable).
* @private
*/
updatePrintButton_: function() {
if (showingSystemDialog)
return;
this.printButton_.disabled = !areSettingsValid();
},
/**
* Updates |this.summary_| based on the currently selected user options.
* @private
*/
updateSummary_: function() {
var printToPDF = getSelectedPrinterName() == PRINT_TO_PDF;
var copies = printToPDF ? 1 : copiesSettings.numberOfCopies;
if (!printToPDF && !copiesSettings.isValid()) {
this.summary_.innerHTML =
localStrings.getString('invalidNumberOfCopies');
return;
}
if (!pageSettings.isPageSelectionValid()) {
this.summary_.innerHTML = '';
return;
}
var pageSet = pageSettings.selectedPagesSet;
var numOfSheets = pageSet.length;
var summaryLabel =
localStrings.getString('printPreviewSheetsLabelSingular');
var numOfPagesText = '';
var pagesLabel = localStrings.getString('printPreviewPageLabelPlural');
if (printToPDF)
summaryLabel = localStrings.getString('printPreviewPageLabelSingular');
if (!printToPDF && copiesSettings.twoSidedCheckbox.checked)
numOfSheets = Math.ceil(numOfSheets / 2);
numOfSheets *= copies;
if (numOfSheets > 1) {
summaryLabel = printToPDF ? pagesLabel :
localStrings.getString('printPreviewSheetsLabelPlural');
}
var html = '';
if (pageSet.length * copies != numOfSheets) {
numOfPagesText = pageSet.length * copies;
html = localStrings.getStringF('printPreviewSummaryFormatLong',
'<b>' + numOfSheets + '</b>',
'<b>' + summaryLabel + '</b>',
numOfPagesText, pagesLabel);
} else {
html = localStrings.getStringF('printPreviewSummaryFormatShort',
'<b>' + numOfSheets + '</b>',
'<b>' + summaryLabel + '</b>');
}
// Removing extra spaces from within the string.
html = html.replace(/\s{2,}/g, ' ');
this.summary_.innerHTML = html;
},
};
return {
PrintHeader: PrintHeader,
};
});
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