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feat: improve callback value for webContents.print() (#19000)

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Resolves #18980.

Adds granularity to the optional callback in webContents.print() by adding a failureType value in addition to the success boolean that differentiates between cancelled and failed print jobs.
This commit is contained in:
Shelley Vohr 2019-07-01 14:03:19 -07:00 • committed by GitHub
commit 21d04ed3f4
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2 changed files with 41 additions and 20 deletions
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10
docs/api/web-contents.md
View file

@ -1249,6 +1249,7 @@ Returns [`PrinterInfo[]`](structures/printer-info.md).
* `vertical` Number (optional) - The vertical dpi.
* `callback` Function (optional)
* `success` Boolean - Indicates success of the print call.
* `failureReason` String - Called back if the print fails; can be `cancelled` or `failed`.
Prints window's web page. When `silent` is set to `true`, Electron will pick
the system's default printer if `deviceName` is empty and the default settings
@ -1259,6 +1260,15 @@ Calling `window.print()` in web page is equivalent to calling
Use `page-break-before: always;` CSS style to force to print to a new page.
Example usage:
```js
const options = { silent: true, deviceName: 'My-Printer' }
win.webContents.print(options, (success, errorType) => {
if (!success) console.log(errorType)
})
```
#### `contents.printToPDF(options)`
* `options` Object

51
patches/chromium/printing.patch
View file

@ -46,7 +46,7 @@ index 88a6142eea4c7a219c08fe3463c44711f5c9fada..81db315a0036a123658697aa677e2356
void PrintJobWorker::GetSettingsWithUI(int document_page_count,
diff --git a/chrome/browser/printing/print_view_manager_base.cc b/chrome/browser/printing/print_view_manager_base.cc
index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b48926158311aa0 100644
index 7ba43aada1ac44827cca264d6f37814e4a91f458..1ca9fe408ec9a5129f6cec46daeeee46bab60983 100644
--- a/chrome/browser/printing/print_view_manager_base.cc
+++ b/chrome/browser/printing/print_view_manager_base.cc
@@ -27,10 +27,7 @@
@ -68,7 +68,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
#include "mojo/public/cpp/system/buffer.h"
#include "printing/buildflags/buildflags.h"
#include "printing/metafile_skia.h"
@@ -64,6 +62,8 @@ using PrintSettingsCallback =
@@ -64,6 +64,8 @@ using PrintSettingsCallback =
base::OnceCallback<void(scoped_refptr<PrinterQuery>)>;
void ShowWarningMessageBox(const base::string16& message) {
@ -77,7 +77,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
// Runs always on the UI thread.
static bool is_dialog_shown = false;
if (is_dialog_shown)
@@ -72,6 +72,7 @@ void ShowWarningMessageBox(const base::string16& message) {
@@ -72,6 +74,7 @@ void ShowWarningMessageBox(const base::string16& message) {
base::AutoReset<bool> auto_reset(&is_dialog_shown, true);
chrome::ShowWarningMessageBox(nullptr, base::string16(), message);
@ -85,7 +85,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
}
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
@@ -109,12 +110,14 @@ PrintViewManagerBase::PrintViewManagerBase(content::WebContents* web_contents)
@@ -109,12 +112,14 @@ PrintViewManagerBase::PrintViewManagerBase(content::WebContents* web_contents)
queue_(g_browser_process->print_job_manager()->queue()),
weak_ptr_factory_(this) {
DCHECK(queue_);
@ -100,7 +100,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
}
PrintViewManagerBase::~PrintViewManagerBase() {
@@ -122,12 +125,14 @@ PrintViewManagerBase::~PrintViewManagerBase() {
@@ -122,12 +127,14 @@ PrintViewManagerBase::~PrintViewManagerBase() {
DisconnectFromCurrentPrintJob();
}
@ -118,7 +118,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
}
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
@@ -242,9 +247,9 @@ void PrintViewManagerBase::StartLocalPrintJob(
@@ -242,9 +249,9 @@ void PrintViewManagerBase::StartLocalPrintJob(
void PrintViewManagerBase::UpdatePrintingEnabled() {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// The Unretained() is safe because ForEachFrame() is synchronous.
@ -131,7 +131,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
}
void PrintViewManagerBase::NavigationStopped() {
@@ -336,7 +341,7 @@ void PrintViewManagerBase::OnPrintingFailed(int cookie) {
@@ -336,7 +343,7 @@ void PrintViewManagerBase::OnPrintingFailed(int cookie) {
PrintManager::OnPrintingFailed(cookie);
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
@ -140,13 +140,14 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
#endif
ReleasePrinterQuery();
@@ -436,9 +441,12 @@ void PrintViewManagerBase::OnNotifyPrintJobEvent(
@@ -436,9 +443,13 @@ void PrintViewManagerBase::OnNotifyPrintJobEvent(
content::NotificationService::NoDetails());
break;
}
- case JobEventDetails::USER_INIT_DONE:
- case JobEventDetails::DEFAULT_INIT_DONE:
case JobEventDetails::USER_INIT_CANCELED: {
+ printing_cancelled_ = true;
+ ReleasePrintJob();
+ break;
+ }
@ -155,7 +156,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
NOTREACHED();
break;
}
@@ -532,9 +540,6 @@ bool PrintViewManagerBase::CreateNewPrintJob(PrinterQuery* query) {
@@ -532,9 +543,6 @@ bool PrintViewManagerBase::CreateNewPrintJob(PrinterQuery* query) {
DCHECK(!quit_inner_loop_);
DCHECK(query);
@ -165,7 +166,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
// We can't print if there is no renderer.
if (!web_contents()->GetRenderViewHost() ||
!web_contents()->GetRenderViewHost()->IsRenderViewLive()) {
@@ -544,8 +549,6 @@ bool PrintViewManagerBase::CreateNewPrintJob(PrinterQuery* query) {
@@ -544,8 +552,6 @@ bool PrintViewManagerBase::CreateNewPrintJob(PrinterQuery* query) {
DCHECK(!print_job_);
print_job_ = base::MakeRefCounted<PrintJob>();
print_job_->Initialize(query, RenderSourceName(), number_pages_);
@ -174,17 +175,21 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
printing_succeeded_ = false;
return true;
}
@@ -594,6 +597,9 @@ void PrintViewManagerBase::ReleasePrintJob() {
@@ -594,6 +600,13 @@ void PrintViewManagerBase::ReleasePrintJob() {
content::RenderFrameHost* rfh = printing_rfh_;
printing_rfh_ = nullptr;
+ if (!callback_.is_null())
+ std::move(callback_).Run(printing_succeeded_);
+ if (!callback_.is_null()) {
+ std::string cb_str = "";
+ if (!printing_succeeded_)
+ cb_str = printing_cancelled_ ? "cancelled" : "failed";
+ std::move(callback_).Run(printing_succeeded_, cb_str);
+ }
+
if (!print_job_)
return;
@@ -604,7 +610,7 @@ void PrintViewManagerBase::ReleasePrintJob() {
@@ -604,7 +620,7 @@ void PrintViewManagerBase::ReleasePrintJob() {
}
registrar_.Remove(this, chrome::NOTIFICATION_PRINT_JOB_EVENT,
@ -193,7 +198,7 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
// Don't close the worker thread.
print_job_ = nullptr;
}
@@ -674,6 +680,9 @@ bool PrintViewManagerBase::PrintNowInternal(
@@ -674,6 +690,9 @@ bool PrintViewManagerBase::PrintNowInternal(
// Don't print / print preview interstitials or crashed tabs.
if (web_contents()->ShowingInterstitialPage() || web_contents()->IsCrashed())
return false;
@ -204,19 +209,19 @@ index 7ba43aada1ac44827cca264d6f37814e4a91f458..c41b0c24974147e847baa21b9b489261
}
diff --git a/chrome/browser/printing/print_view_manager_base.h b/chrome/browser/printing/print_view_manager_base.h
index cf074791d0e2e17bbf8cf0b000b8d63e235b7deb..c12107d0af1291c113e05bc1a9cc87e2466c8610 100644
index cf074791d0e2e17bbf8cf0b000b8d63e235b7deb..30b6e042b12f23299b3b7eaecb8a8e71c221786d 100644
--- a/chrome/browser/printing/print_view_manager_base.h
+++ b/chrome/browser/printing/print_view_manager_base.h
@@ -39,6 +39,8 @@ class PrintJob;
@@ -39,6 +40,8 @@ class PrintJob;
class PrintQueriesQueue;
class PrinterQuery;
+using CompletionCallback = base::OnceCallback<void(bool)>;
+using CompletionCallback = base::OnceCallback<void(bool, const std::string&)>;
+
// Base class for managing the print commands for a WebContents.
class PrintViewManagerBase : public content::NotificationObserver,
public PrintManager {
@@ -48,7 +50,9 @@ class PrintViewManagerBase : public content::NotificationObserver,
@@ -48,7 +51,9 @@ class PrintViewManagerBase : public content::NotificationObserver,
// Prints the current document immediately. Since the rendering is
// asynchronous, the actual printing will not be completed on the return of
// this function. Returns false if printing is impossible at the moment.
@ -227,7 +232,7 @@ index cf074791d0e2e17bbf8cf0b000b8d63e235b7deb..c12107d0af1291c113e05bc1a9cc87e2
#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
// Prints the document in |print_data| with settings specified in
@@ -195,6 +199,9 @@ class PrintViewManagerBase : public content::NotificationObserver,
@@ -195,9 +200,15 @@ class PrintViewManagerBase : public content::NotificationObserver,
// The current RFH that is printing with a system printing dialog.
content::RenderFrameHost* printing_rfh_;
@ -237,6 +242,12 @@ index cf074791d0e2e17bbf8cf0b000b8d63e235b7deb..c12107d0af1291c113e05bc1a9cc87e2
// Indication of success of the print job.
bool printing_succeeded_;
+ // Indication of whether the print job was manually cancelled
+ bool printing_cancelled_ = false;
+
// Set while running an inner message loop inside RenderAllMissingPagesNow().
// This means we are _blocking_ until all the necessary pages have been
// rendered or the print settings are being loaded.
diff --git a/chrome/browser/printing/printing_message_filter.cc b/chrome/browser/printing/printing_message_filter.cc
index 1f79e7b127f35e2eaef923af5c4a5f0a7e5250a5..327b37dfbb84c60d7f0e339c3c4cb8ca3b3c9b26 100644
--- a/chrome/browser/printing/printing_message_filter.cc