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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsPagePrintTimer.h"
#include "mozilla/Unused.h"
#include "nsIContentViewer.h"
#include "nsIServiceManager.h"
#include "nsPrintEngine.h"
NS_IMPL_ISUPPORTS_INHERITED(nsPagePrintTimer, mozilla::Runnable, nsITimerCallback)
nsPagePrintTimer::~nsPagePrintTimer()
{
// This matches the IncrementDestroyRefCount call in the constructor.
mDocViewerPrint->DecrementDestroyRefCount();
}
nsresult
nsPagePrintTimer::StartTimer(bool aUseDelay)
{
nsresult result;
mTimer = do_CreateInstance("@mozilla.org/timer;1", &result);
if (NS_FAILED(result)) {
NS_WARNING("unable to start the timer");
} else {
uint32_t delay = 0;
if (aUseDelay) {
if (mFiringCount < 10) {
// Longer delay for the few first pages.
delay = mDelay + ((10 - mFiringCount) * 100);
} else {
delay = mDelay;
}
}
mTimer->InitWithCallback(this, delay, nsITimer::TYPE_ONE_SHOT);
}
return result;
}
nsresult
nsPagePrintTimer::StartWatchDogTimer()
{
nsresult result;
if (mWatchDogTimer) {
mWatchDogTimer->Cancel();
}
mWatchDogTimer = do_CreateInstance("@mozilla.org/timer;1", &result);
if (NS_FAILED(result)) {
NS_WARNING("unable to start the timer");
} else {
// Instead of just doing one timer for a long period do multiple so we
// can check if the user cancelled the printing.
mWatchDogTimer->InitWithCallback(this, WATCH_DOG_INTERVAL,
nsITimer::TYPE_ONE_SHOT);
}
return result;
}
void
nsPagePrintTimer::StopWatchDogTimer()
{
if (mWatchDogTimer) {
mWatchDogTimer->Cancel();
mWatchDogTimer = nullptr;
}
}
//nsRunnable
NS_IMETHODIMP
nsPagePrintTimer::Run()
{
bool initNewTimer = true;
// Check to see if we are done
// inRange will be true if a page is actually printed
bool inRange;
bool donePrinting;
// donePrinting will be true if it completed successfully or
// if the printing was cancelled
donePrinting = !mPrintEngine || mPrintEngine->PrintPage(mPrintObj, inRange);
if (donePrinting) {
// now clean up print or print the next webshell
if (!mPrintEngine || mPrintEngine->DonePrintingPages(mPrintObj, NS_OK)) {
initNewTimer = false;
mDone = true;
}
}
// Note that the Stop() destroys this after the print job finishes
// (The PrintEngine stops holding a reference when DonePrintingPages
// returns true.)
Stop();
if (initNewTimer) {
++mFiringCount;
nsresult result = StartTimer(inRange);
if (NS_FAILED(result)) {
mDone = true; // had a failure.. we are finished..
if (mPrintEngine) {
mPrintEngine->SetIsPrinting(false);
}
}
}
return NS_OK;
}
// nsITimerCallback
NS_IMETHODIMP
nsPagePrintTimer::Notify(nsITimer *timer)
{
// When finished there may be still pending notifications, which we can just
// ignore.
if (mDone) {
return NS_OK;
}
// There are four things that call Notify with different values for timer:
// 1) the delay between pages (timer == mTimer)
// 2) canvasPrintState done (timer == null)
// 3) the watch dog timer (timer == mWatchDogTimer)
// 4) the waiting for remote print "timer" (timer == mWaitingForRemotePrint)
if (!timer) {
// Reset the counter since a mozPrintCallback has finished.
mWatchDogCount = 0;
} else if (timer == mTimer) {
// Reset the watchdog timer before the start of every page.
mWatchDogCount = 0;
mTimer = nullptr;
} else if (timer == mWaitingForRemotePrint) {
mWaitingForRemotePrint = nullptr;
// If we are still waiting for the page delay timer, don't let the
// notification from the remote print job trigger the next page.
if (mTimer) {
return NS_OK;
}
} else if (timer == mWatchDogTimer) {
mWatchDogCount++;
if (mWatchDogCount > WATCH_DOG_MAX_COUNT) {
Fail();
return NS_OK;
}
}
if (mDocViewerPrint) {
bool donePrePrint = true;
if (mPrintEngine) {
donePrePrint = mPrintEngine->PrePrintPage();
}
if (donePrePrint && !mWaitingForRemotePrint) {
StopWatchDogTimer();
NS_DispatchToMainThread(this);
} else {
// Start the watch dog if we're waiting for preprint to ensure that if any
// mozPrintCallbacks take to long we error out.
StartWatchDogTimer();
}
}
return NS_OK;
}
void
nsPagePrintTimer::WaitForRemotePrint()
{
nsresult result;
mWaitingForRemotePrint = do_CreateInstance("@mozilla.org/timer;1", &result);
if (NS_FAILED(result)) {
NS_WARNING("Failed to wait for remote print, we might time-out.");
mWaitingForRemotePrint = nullptr;
}
}
void
nsPagePrintTimer::RemotePrintFinished()
{
if (!mWaitingForRemotePrint) {
return;
}
mozilla::Unused <<
mWaitingForRemotePrint->InitWithCallback(this, 0, nsITimer::TYPE_ONE_SHOT);
}
nsresult
nsPagePrintTimer::Start(nsPrintObject* aPO)
{
mPrintObj = aPO;
mDone = false;
return StartTimer(false);
}
void
nsPagePrintTimer::Stop()
{
if (mTimer) {
mTimer->Cancel();
mTimer = nullptr;
}
StopWatchDogTimer();
}
void
nsPagePrintTimer::Fail()
{
NS_WARNING("nsPagePrintTimer::Fail called");
mDone = true;
Stop();
if (mPrintEngine) {
mPrintEngine->CleanupOnFailure(NS_OK, false);
}
}
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