pjs/toolkit/components/printing/content/printUtils.js

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JavaScript

# -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
# ***** BEGIN LICENSE BLOCK *****
# Version: NPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Netscape Public License
# Version 1.1 (the "License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.mozilla.org/NPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is mozilla.org code.
#
# The Initial Developer of the Original Code is
# Netscape Communications Corporation.
# Portions created by the Initial Developer are Copyright (C) 1998
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Blake Ross <blakeross@telocity.com>
# Peter Annema <disttsc@bart.nl>
# Samir Gehani <sgehani@netscape.com>
# Pierre Chanial <p_ch@verizon.net>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the NPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the NPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK ***** */
var XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
var PrintUtils = {
showPageSetup: function ()
{
try {
var printSettings = this.getPrintSettings();
var PRINTPROMPTSVC = Components.classes["@mozilla.org/embedcomp/printingprompt-service;1"]
.getService(Components.interfaces.nsIPrintingPromptService);
PRINTPROMPTSVC.showPageSetup(window, printSettings, null);
this.savePrintSettings(printSettings);
} catch (e) {
dump("showPageSetup "+e+"\n");
return false;
}
return true;
},
print: function ()
{
var webBrowserPrint = this.getWebBrowserPrint();
var printSettings = this.getPrintSettings();
try {
webBrowserPrint.print(printSettings, null);
} catch (e) {
// Pressing cancel is expressed as an NS_ERROR_ABORT return value,
// causing an exception to be thrown which we catch here.
// Unfortunately this will also consume helpful failures, so add a
// dump("print: "+e+"\n"); // if you need to debug
}
},
printPreview: function (aEnterPPCallback, aExitPPCallback)
{
// if we're in PP mode, don't copy the callbacks.
if (!document.getElementById("print-preview-toolbar")) {
this._onEnterPP = aEnterPPCallback;
this._onExitPP = aExitPPCallback;
}
this._webProgressPP = {};
var ppParams = {};
var notifyOnOpen = {};
var webBrowserPrint = this.getWebBrowserPrint();
var printSettings = this.getPrintSettings();
// Here we get the PrintingPromptService so we can display the PP Progress from script
// For the browser implemented via XUL with the PP toolbar we cannot let it be
// automatically opened from the print engine because the XUL scrollbars in the PP window
// will layout before the content window and a crash will occur.
// Doing it all from script, means it lays out before hand and we can let printing do it's own thing
var PPROMPTSVC = Components.classes["@mozilla.org/embedcomp/printingprompt-service;1"]
.getService(Components.interfaces.nsIPrintingPromptService);
// just in case we are already printing,
// an error code could be returned if the Prgress Dialog is already displayed
try {
PPROMPTSVC.showProgress(this, webBrowserPrint, printSettings, this._obsPP, false,
this._webProgressPP, ppParams, notifyOnOpen);
if (ppParams.value) {
var webNav = getBrowser().webNavigation;
ppParams.value.docTitle = webNav.document.title;
ppParams.value.docURL = webNav.currentURI.spec;
}
// this tells us whether we should continue on with PP or
// wait for the callback via the observer
if (!notifyOnOpen.value.valueOf() || this._webProgressPP.value == null)
this.enterPrintPreview();
} catch (e) {
this.enterPrintPreview();
}
},
getWebBrowserPrint: function ()
{
return _content.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
.getInterface(Components.interfaces.nsIWebBrowserPrint);
},
savePrintSettings: function (aPrintSettings)
{
var PSSVC = Components.classes["@mozilla.org/gfx/printsettings-service;1"]
.getService(Components.interfaces.nsIPrintSettingsService);
PSSVC.savePrintSettingsToPrefs(aPrintSettings, false, aPrintSettings.kInitSaveNativeData);
},
////////////////////////////////////////
// "private" methods. Don't use them. //
////////////////////////////////////////
setPrinterDefaultsForSelectedPrinter: function (aPSSVC, aPrintSettings)
{
if (!aPrintSettings.printerName)
aPrintSettings.printerName = aPSSVC.defaultPrinterName;
// First get any defaults from the printer
aPSSVC.initPrintSettingsFromPrinter(aPrintSettings.printerName, aPrintSettings);
// now augment them with any values from last time
aPSSVC.initPrintSettingsFromPrefs(aPrintSettings, true, aPrintSettings.kInitSaveAll);
},
getPrintSettings: function ()
{
var printSettings;
try {
var PSSVC = Components.classes["@mozilla.org/gfx/printsettings-service;1"]
.getService(Components.interfaces.nsIPrintSettingsService);
printSettings = PSSVC.globalPrintSettings;
this.setPrinterDefaultsForSelectedPrinter(PSSVC, printSettings);
} catch (e) {
dump("getPrintSettings: "+e+"\n");
}
return printSettings;
},
_chromeState: {},
_closeHandlerPP: null,
_webProgressPP: null,
_onEnterPP: null,
_onExitPP: null,
// This observer is called once the progress dialog has been "opened"
_obsPP:
{
observe: function(aSubject, aTopic, aData)
{
// delay the print preview to show the content of the progress dialog
setTimeout("PrintUtils.enterPrintPreview();", 0);
},
QueryInterface : function(iid)
{
if (iid.equals(Components.interfaces.nsIObserver) || iid.equals(Components.interfaces.nsISupportsWeakReference))
return this;
throw Components.results.NS_NOINTERFACE;
}
},
enterPrintPreview: function ()
{
var webBrowserPrint = this.getWebBrowserPrint();
var printSettings = this.getPrintSettings();
try {
webBrowserPrint.printPreview(printSettings, null, this._webProgressPP.value);
} catch (e) {
// Pressing cancel is expressed as an NS_ERROR_ABORT return value,
// causing an exception to be thrown which we catch here.
// Unfortunately this will also consume helpful failures, so add a
// dump(e); // if you need to debug
}
var printPreviewTB = document.getElementById("print-preview-toolbar");
if (printPreviewTB) {
printPreviewTB.updateToolbar();
return;
}
// show the toolbar after we go into print preview mode so
// that we can initialize the toolbar with total num pages
printPreviewTB = document.createElementNS(XUL_NS, "toolbar");
printPreviewTB.setAttribute("printpreview", true);
printPreviewTB.setAttribute("id", "print-preview-toolbar");
getBrowser().parentNode.insertBefore(printPreviewTB, getBrowser());
// Tab browser...
if ("getStripVisibility" in getBrowser()) {
this._chromeState.hadTabStrip = getBrowser().getStripVisibility();
getBrowser().setStripVisibilityTo(false);
}
// copy the window close handler
if (document.documentElement.hasAttribute("onclose"))
this._closeHandlerPP = document.documentElement.getAttribute("onclose");
else
this._closeHandlerPP = null;
document.documentElement.setAttribute("onclose", "PrintUtils.exitPrintPreview(); return false;");
// disable chrome shortcuts...
window.addEventListener("keypress", this.onKeyPressPP, true);
_content.focus();
// on Enter PP Call back
if (this._onEnterPP) {
this._onEnterPP();
this._onEnterPP = null;
}
},
exitPrintPreview: function ()
{
window.removeEventListener("keypress", this.onKeyPressPP, true);
// restore the old close handler
document.documentElement.setAttribute("onclose", this._closeHandlerPP);
this._closeHandlerPP = null;
if ("getStripVisibility" in getBrowser())
getBrowser().setStripVisibilityTo(this._chromeState.hadTabStrip);
var webBrowserPrint = this.getWebBrowserPrint();
webBrowserPrint.exitPrintPreview();
// remove the print preview toolbar
var printPreviewTB = document.getElementById("print-preview-toolbar");
getBrowser().parentNode.removeChild(printPreviewTB);
_content.focus();
// on Exit PP Call back
if (this._onExitPP) {
this._onExitPP();
this._onExitPP = null;
}
},
onKeyPressPP: function (aEvent)
{
var closeKey;
try {
closeKey = document.getElementById("key_close")
.getAttribute("key");
closeKey = aEvent["DOM_VK_"+closeKey];
} catch (e) {}
var isModif = aEvent.ctrlKey || aEvent.metaKey;
// ESC and Ctrl-W exits the PP
if (aEvent.keyCode == aEvent.DOM_VK_ESCAPE || isModif &&
(aEvent.charCode == closeKey || aEvent.charCode == closeKey + 32))
PrintUtils.exitPrintPreview();
// cancel shortkeys
if (isModif) {
aEvent.preventDefault();
aEvent.stopPropagation();
}
}
}