The Tor Browser / file comparison

comparison: toolkit/components/printing/content/printUtils.js

toolkit/components/printing/content/printUtils.js

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TOR_BUG_3246
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129ffea94266
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1 // -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 var gPrintSettingsAreGlobal = false;
8 var gSavePrintSettings = false;
9 var gFocusedElement = null;
10
11 var PrintUtils = {
12
13 showPageSetup: function ()
14 {
15 try {
16 var printSettings = this.getPrintSettings();
17 var PRINTPROMPTSVC = Components.classes["@mozilla.org/embedcomp/printingprompt-service;1"]
18 .getService(Components.interfaces.nsIPrintingPromptService);
19 PRINTPROMPTSVC.showPageSetup(window, printSettings, null);
20 if (gSavePrintSettings) {
21 // Page Setup data is a "native" setting on the Mac
22 var PSSVC = Components.classes["@mozilla.org/gfx/printsettings-service;1"]
23 .getService(Components.interfaces.nsIPrintSettingsService);
24 PSSVC.savePrintSettingsToPrefs(printSettings, true, printSettings.kInitSaveNativeData);
25 }
26 } catch (e) {
27 dump("showPageSetup "+e+"\n");
28 return false;
29 }
30 return true;
31 },
32
33 print: function (aWindow)
34 {
35 var webBrowserPrint = this.getWebBrowserPrint(aWindow);
36 var printSettings = this.getPrintSettings();
37 try {
38 webBrowserPrint.print(printSettings, null);
39 if (gPrintSettingsAreGlobal && gSavePrintSettings) {
40 var PSSVC = Components.classes["@mozilla.org/gfx/printsettings-service;1"]
41 .getService(Components.interfaces.nsIPrintSettingsService);
42 PSSVC.savePrintSettingsToPrefs(printSettings, true,
43 printSettings.kInitSaveAll);
44 PSSVC.savePrintSettingsToPrefs(printSettings, false,
45 printSettings.kInitSavePrinterName);
46 }
47 } catch (e) {
48 // Pressing cancel is expressed as an NS_ERROR_ABORT return value,
49 // causing an exception to be thrown which we catch here.
50 // Unfortunately this will also consume helpful failures, so add a
51 // dump("print: "+e+"\n"); // if you need to debug
52 }
53 },
54
55 // If aCallback is not null, it must be an object which has the following methods:
56 // getPrintPreviewBrowser(), getSourceBrowser(),
57 // getNavToolbox(), onEnter() and onExit().
58 // If aCallback is null, then printPreview must previously have been called with
59 // non-null aCallback and that object will be reused.
60 printPreview: function (aCallback)
61 {
62 // if we're already in PP mode, don't set the callback; chances
63 // are it is null because someone is calling printPreview() to
64 // get us to refresh the display.
65 if (!document.getElementById("print-preview-toolbar")) {
66 this._callback = aCallback;
67 this._sourceBrowser = aCallback.getSourceBrowser();
68 this._originalTitle = this._sourceBrowser.contentDocument.title;
69 this._originalURL = this._sourceBrowser.currentURI.spec;
70 } else {
71 // collapse the browser here -- it will be shown in
72 // enterPrintPreview; this forces a reflow which fixes display
73 // issues in bug 267422.
74 this._sourceBrowser = this._callback.getPrintPreviewBrowser();
75 this._sourceBrowser.collapsed = true;
76 }
77
78 this._webProgressPP = {};
79 var ppParams = {};
80 var notifyOnOpen = {};
81 var webBrowserPrint = this.getWebBrowserPrint();
82 var printSettings = this.getPrintSettings();
83 // Here we get the PrintingPromptService so we can display the PP Progress from script
84 // For the browser implemented via XUL with the PP toolbar we cannot let it be
85 // automatically opened from the print engine because the XUL scrollbars in the PP window
86 // will layout before the content window and a crash will occur.
87 // Doing it all from script, means it lays out before hand and we can let printing do its own thing
88 var PPROMPTSVC = Components.classes["@mozilla.org/embedcomp/printingprompt-service;1"]
89 .getService(Components.interfaces.nsIPrintingPromptService);
90 // just in case we are already printing,
91 // an error code could be returned if the Prgress Dialog is already displayed
92 try {
93 PPROMPTSVC.showProgress(window, webBrowserPrint, printSettings, this._obsPP, false,
94 this._webProgressPP, ppParams, notifyOnOpen);
95 if (ppParams.value) {
96 ppParams.value.docTitle = this._originalTitle;
97 ppParams.value.docURL = this._originalURL;
98 }
99
100 // this tells us whether we should continue on with PP or
101 // wait for the callback via the observer
102 if (!notifyOnOpen.value.valueOf() || this._webProgressPP.value == null)
103 this.enterPrintPreview();
104 } catch (e) {
105 this.enterPrintPreview();
106 }
107 },
108
109 getWebBrowserPrint: function (aWindow)
110 {
111 var contentWindow = aWindow || window.content;
112 return contentWindow.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
113 .getInterface(Components.interfaces.nsIWebBrowserPrint);
114 },
115
116 getPrintPreview: function() {
117 return this._callback.getPrintPreviewBrowser().docShell.printPreview;
118 },
119
120 ////////////////////////////////////////
121 // "private" methods. Don't use them. //
122 ////////////////////////////////////////
123
124 setPrinterDefaultsForSelectedPrinter: function (aPSSVC, aPrintSettings)
125 {
126 if (!aPrintSettings.printerName)
127 aPrintSettings.printerName = aPSSVC.defaultPrinterName;
128
129 // First get any defaults from the printer
130 aPSSVC.initPrintSettingsFromPrinter(aPrintSettings.printerName, aPrintSettings);
131 // now augment them with any values from last time
132 aPSSVC.initPrintSettingsFromPrefs(aPrintSettings, true, aPrintSettings.kInitSaveAll);
133 },
134
135 getPrintSettings: function ()
136 {
137 var pref = Components.classes["@mozilla.org/preferences-service;1"]
138 .getService(Components.interfaces.nsIPrefBranch);
139 if (pref) {
140 gPrintSettingsAreGlobal = pref.getBoolPref("print.use_global_printsettings", false);
141 gSavePrintSettings = pref.getBoolPref("print.save_print_settings", false);
142 }
143
144 var printSettings;
145 try {
146 var PSSVC = Components.classes["@mozilla.org/gfx/printsettings-service;1"]
147 .getService(Components.interfaces.nsIPrintSettingsService);
148 if (gPrintSettingsAreGlobal) {
149 printSettings = PSSVC.globalPrintSettings;
150 this.setPrinterDefaultsForSelectedPrinter(PSSVC, printSettings);
151 } else {
152 printSettings = PSSVC.newPrintSettings;
153 }
154 } catch (e) {
155 dump("getPrintSettings: "+e+"\n");
156 }
157 return printSettings;
158 },
159
160 _closeHandlerPP: null,
161 _webProgressPP: null,
162 _callback: null,
163 _sourceBrowser: null,
164 _originalTitle: "",
165 _originalURL: "",
166
167 // This observer is called once the progress dialog has been "opened"
168 _obsPP:
169 {
170 observe: function(aSubject, aTopic, aData)
171 {
172 // delay the print preview to show the content of the progress dialog
173 setTimeout(function () { PrintUtils.enterPrintPreview(); }, 0);
174 },
175
176 QueryInterface : function(iid)
177 {
178 if (iid.equals(Components.interfaces.nsIObserver) ||
179 iid.equals(Components.interfaces.nsISupportsWeakReference) ||
180 iid.equals(Components.interfaces.nsISupports))
181 return this;
182 throw Components.results.NS_NOINTERFACE;
183 }
184 },
185
186 enterPrintPreview: function ()
187 {
188 gFocusedElement = document.commandDispatcher.focusedElement;
189
190 var webBrowserPrint;
191 var printSettings = this.getPrintSettings();
192 var originalWindow = this._sourceBrowser.contentWindow;
193
194 try {
195 webBrowserPrint = this.getPrintPreview();
196 webBrowserPrint.printPreview(printSettings, originalWindow,
197 this._webProgressPP.value);
198 } catch (e) {
199 // Pressing cancel is expressed as an NS_ERROR_ABORT return value,
200 // causing an exception to be thrown which we catch here.
201 // Unfortunately this will also consume helpful failures, so add a
202 // dump(e); // if you need to debug
203
204 // Need to call enter and exit so that UI gets back to normal.
205 this._callback.onEnter();
206 this._callback.onExit();
207 return;
208 }
209
210 var printPreviewTB = document.getElementById("print-preview-toolbar");
211 if (printPreviewTB) {
212 printPreviewTB.updateToolbar();
213 var browser = this._callback.getPrintPreviewBrowser();
214 browser.collapsed = false;
215 browser.contentWindow.focus();
216 return;
217 }
218
219 // Set the original window as an active window so any mozPrintCallbacks can
220 // run without delayed setTimeouts.
221 var docShell = originalWindow.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
222 .getInterface(Components.interfaces.nsIWebNavigation)
223 .QueryInterface(Components.interfaces.nsIDocShell);
224 docShell.isActive = true;
225
226 // show the toolbar after we go into print preview mode so
227 // that we can initialize the toolbar with total num pages
228 var XUL_NS =
229 "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
230 printPreviewTB = document.createElementNS(XUL_NS, "toolbar");
231 printPreviewTB.setAttribute("printpreview", true);
232 printPreviewTB.id = "print-preview-toolbar";
233 printPreviewTB.className = "toolbar-primary";
234
235 var navToolbox = this._callback.getNavToolbox();
236 navToolbox.parentNode.insertBefore(printPreviewTB, navToolbox);
237
238 // copy the window close handler
239 if (document.documentElement.hasAttribute("onclose"))
240 this._closeHandlerPP = document.documentElement.getAttribute("onclose");
241 else
242 this._closeHandlerPP = null;
243 document.documentElement.setAttribute("onclose", "PrintUtils.exitPrintPreview(); return false;");
244
245 // disable chrome shortcuts...
246 window.addEventListener("keydown", this.onKeyDownPP, true);
247 window.addEventListener("keypress", this.onKeyPressPP, true);
248
249 var browser = this._callback.getPrintPreviewBrowser();
250 browser.collapsed = false;
251 browser.contentWindow.focus();
252
253 // on Enter PP Call back
254 this._callback.onEnter();
255 },
256
257 exitPrintPreview: function ()
258 {
259 window.removeEventListener("keydown", this.onKeyDownPP, true);
260 window.removeEventListener("keypress", this.onKeyPressPP, true);
261
262 // restore the old close handler
263 document.documentElement.setAttribute("onclose", this._closeHandlerPP);
264 this._closeHandlerPP = null;
265
266 var webBrowserPrint = this.getPrintPreview();
267 webBrowserPrint.exitPrintPreview();
268
269 // remove the print preview toolbar
270 var printPreviewTB = document.getElementById("print-preview-toolbar");
271 this._callback.getNavToolbox().parentNode.removeChild(printPreviewTB);
272
273 var fm = Components.classes["@mozilla.org/focus-manager;1"]
274 .getService(Components.interfaces.nsIFocusManager);
275 if (gFocusedElement)
276 fm.setFocus(gFocusedElement, fm.FLAG_NOSCROLL);
277 else
278 window.content.focus();
279 gFocusedElement = null;
280
281 this._callback.onExit();
282 },
283
284 onKeyDownPP: function (aEvent)
285 {
286 // Esc exits the PP
287 if (aEvent.keyCode == aEvent.DOM_VK_ESCAPE) {
288 PrintUtils.exitPrintPreview();
289 }
290 },
291
292 onKeyPressPP: function (aEvent)
293 {
294 var closeKey;
295 try {
296 closeKey = document.getElementById("key_close")
297 .getAttribute("key");
298 closeKey = aEvent["DOM_VK_"+closeKey];
299 } catch (e) {}
300 var isModif = aEvent.ctrlKey || aEvent.metaKey;
301 // Ctrl-W exits the PP
302 if (isModif &&
303 (aEvent.charCode == closeKey || aEvent.charCode == closeKey + 32)) {
304 PrintUtils.exitPrintPreview();
305 }
306 else if (isModif) {
307 var printPreviewTB = document.getElementById("print-preview-toolbar");
308 var printKey = document.getElementById("printKb").getAttribute("key").toUpperCase();
309 var pressedKey = String.fromCharCode(aEvent.charCode).toUpperCase();
310 if (printKey == pressedKey) {
311 PrintUtils.print();
312 }
313 }
314 // cancel shortkeys
315 if (isModif) {
316 aEvent.preventDefault();
317 aEvent.stopPropagation();
318 }
319 }
320 }

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